WO2014179955A1 - Method and apparatus for detecting and sending information - Google Patents

Abstract

The present invention relates to the technical field of wireless communications, and in particular, to a method and an apparatus for detecting and sending information, so as to solve the problem of long time consumption, low efficiency and poor accuracy when a UE determines a cell identity in the prior art. In the embodiments of the present invention, because each candidate time-frequency resource may be any location of a carrier center, the possibility that two candidate time-frequency resources are superposed and the interference between signals sent on any two candidate time-frequency resources; therefore, the interference when a UE detects an actual scrambling code sequence and an actual orthogonal code sequence are reduced, the time required by the UE for determining a cell identity is shortened, and the efficiency of determining the cell identity and the accuracy of the determined cell identity are improved.

Description

 Method and device for detecting and transmitting information

Technical field

 The present invention relates to the field of mobile communication technologies, and in particular, to a method and apparatus for information detection and transmission. Background technique

 With the development of communication technologies, LTE (Long Term Evolution) systems are particularly important because they have the advantages of improving the performance of cell edge users, increasing cell capacity, and reducing system delay. In the LTE system, in order to ensure the mobility performance of the UE (User Equipment), to perform appropriate cell reselection or cell handover, the UE performs cell RRM (Radio Resource Management) measurement. For example, RRM measurement of reference signal received power, or RRM measurement of reference signal reception quality, and the like. Therefore, RRM's mobility management capabilities are an important part of the LTE system. In the prior art, in a conventional homogeneous network, the specific execution process of the cell RRM measurement by the UE in the connected state is as follows:

 Step a: The UE initiates the RRM measurement according to the eNB (Evolved NodeB) indication; Step b: The UE determines the cell identity of the cell by using a PSS (Primary Synchronization Signal) and a Secondary Synchronization Signal (SSS); After the UE determines the cell identity, the UE uses the CRS (Cell-specific Reference Signal) sent by the cell corresponding to the cell identity to perform RRM measurement, and reports the corresponding measurement result to the eNB;

 Step d: The UE performs handover according to the indication of the eNB, where the eNB determines whether to make the UE perform cell handover according to the measurement result reported by the UE.

It can be seen from the foregoing process that, in a homogeneous network, the UE synchronizes with the eNB by detecting the PSS and the SSS sent by the eNB, and determines a PCI (Physical Cell Indicator). The PSS provides three sequences, and the SSS provides a total of 168 sequence combinations through a combination of two short sequences. Therefore, 504 cell identifiers (ie, 504 PCIs) can be provided in the prior art.

 In the existing LTE system, the period in which the base station transmits the PSS and the SSS is 5 ms, and each of the two OFDM (Orthogonal Frequency Division Multiplexing) symbols in the six resource blocks occupying the carrier center is transmitted. And when the base station sends the CRS, each subframe needs

The resource location of the reference signal in a resource block in the LTE system is as shown in FIG. 1A.

 With the development of LTE technology, heterogeneous networks are also emerging. The main mode of heterogeneous networks is to deploy a large number of micro cells or pico cells in a macro cell. Macro cells and Pico cells can be used.部署 Use the same frequency point deployment, you can also use different frequency point deployment (mainly in this mode), where Macro cell is mainly used to provide coverage and real-time data service services, Pico cell is mainly used A service that provides high-rate data services. In a heterogeneous network, when determining the cell identity before performing RRM measurement, if the UE still determines the cell identity according to the PSS and SSS, the following defects exist:

 The Pico cell deployed in the prior art is relatively dense, and the PSS and the SSS have a short transmission period. Therefore, when the UE receives the PSS and the SSS, the interference is large, and the UE determines the cell identifier according to the PSS and the SSS. Long, low efficiency and poor accuracy. At the same time, because the probability of overlapping time slots resources occupied by carriers is large, the UE may also have large interference when receiving PSS and SSS. In addition, when the UE determines the cell identifier according to the PSS and the SSS, there is a problem that the time is long, the efficiency is low, and the accuracy is poor. Summary of the invention

 The embodiment of the invention provides a method and a device for detecting and transmitting information, which are used to solve the problem that the UE has a long time, low efficiency and poor accuracy when determining the cell identifier according to the PSS and the SSS in the prior art. .

In a first aspect, a method for information detection is provided, including: obtaining at least one candidate time-frequency a source, and determining sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; and the at least one candidate time-frequency resource And detecting a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information corresponding to the at least one candidate time-frequency resource, and obtaining an actual orthogonal code in the actual scrambling code sequence and the actual orthogonal code sequence group. a sequence; determining a cell identity based on at least the detected actual scrambling code sequence and the actual orthogonal code sequence.

 With reference to the first aspect, in a first possible implementation, the candidate time-frequency resource is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is at least two Orthogonal frequency division multiplexing OFDM symbols in which the secondary synchronization signal SSS is located.

 With reference to the first aspect, or the first possible implementation manner of the first aspect, in the second possible implementation, the at least one candidate time-frequency resource is a different time-frequency resource in a subframe; or The at least one candidate time-frequency resource is a time-frequency resource in a different subframe.

 With reference to the first aspect, or the first to the second possible implementation manners of the first aspect, in a third possible implementation, the acquiring the at least one candidate time-frequency resource includes: pre-storing the at least one candidate time-frequency And acquiring the at least one candidate time-frequency resource according to the signaling sent by the received base station.

 With reference to the first aspect, or the first to the third possible implementation manners of the first aspect, in a fourth possible implementation manner, determining sequence information corresponding to the at least one candidate time-frequency resource, specifically: pre-storing And the sequence information corresponding to the at least one candidate time-frequency resource is obtained according to the signaling sent by the received base station.

 With reference to the first aspect, or the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation, the candidate scrambling code sequence is a pseudo random sequence, or an initialization sequence of a pseudo random sequence; The candidate orthogonal code sequence group is a Walsh Walsh sequence group.

With reference to the first aspect, or the first to fifth possible implementation manners of the first aspect, in the sixth possible implementation manner, the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information are The candidate scrambling code sequence is a sequence generated in a frequency domain direction of the candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is A sequence obtained by spreading the generated candidate scrambling code sequence in the time domain direction of the time-frequency resource.

 With reference to the first aspect, or the first to sixth possible implementation manners of the first aspect, in a seventh possible implementation manner, when the determined at least one candidate is detected on the at least one candidate time-frequency resource The candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information corresponding to the frequency resource, and obtaining the actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group, specifically including: determining when the candidate is in the candidate a candidate scrambling code sequence and a candidate orthogonal code sequence included in the sequence information corresponding to the candidate time-frequency resource, respectively, the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the frequency resource When the candidate orthogonal code sequences in the group match, the matched candidate scrambling code sequence and the candidate orthogonal code sequence are taken as the actual scrambling code sequence and the actual orthogonal code sequence.

 With reference to the first aspect, or the first to seventh possible implementation manners of the first aspect, in the eighth possible implementation, at least the actual 4 special code sequence and the actual orthogonality are detected. Determining the cell identifier, the method includes: determining, according to the detected actual scrambling code sequence, the actual orthogonal code sequence, a cell identifier; or, according to the detected actual scrambling code sequence, the actual orthogonal The code sequence, and the actual scrambling code sequence and the actual time-frequency resources occupied by the actual orthogonal code sequence, determine the cell identity.

 With reference to the first aspect, or the first to eighth possible implementation manners of the first aspect, in the ninth possible implementation manner, the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource Corresponding to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

 With reference to the ninth possible implementation manner of the foregoing aspect, in a tenth possible implementation, the candidate scrambling code sequence is: each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information a sequence generated in a frequency domain direction; a candidate orthogonal code sequence in the candidate orthogonal code sequence group is a time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information, The candidate scrambling code sequence is subjected to a spread spectrum generated sequence.

With reference to the ninth or ten possible implementation manners of the foregoing aspect, in the eleventh possible implementation, the determining, by the candidate time-frequency resource, the determined sequence information corresponding to the candidate time-frequency resource is included Candidate scrambling code sequence and candidate orthogonal code sequence group, obtaining actual scrambling code sequence and actual positive The actual orthogonal code sequence in the cross-code sequence group includes: detecting, on each time-frequency sub-resource of the candidate time-frequency resource, a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, and obtaining the actual The scrambling code sequence, and each of the time-frequency sub-resources of the candidate time-frequency resource, according to the correspondence between the time-frequency sub-resource and the candidate orthogonal code sequence group, detecting the corresponding candidate orthogonal code sequence group, obtaining each combination In an eleventh possible implementation manner, in a twelfth possible implementation manner, determining, according to the detected actual scrambling code sequence and the actual orthogonal code sequence, a cell identifier, specifically: Detecting the actual scrambling code sequence corresponding to each time-frequency sub-resource, and the area identifier; or, according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the 4th code sequence and The actual time-frequency resource occupied by the actual orthogonal code sequence determines a cell identifier.

 With reference to the ninth to twelfth possible implementation manners of the first aspect, in the thirteenth possible implementation manner, the candidate time-frequency resource includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, The first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the candidate corresponding to the time-frequency sub-resource included in the first time-frequency sub-resource group The orthogonal code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.

 With reference to the thirteenth possible implementation manner of the foregoing aspect, in the fourteenth possible implementation, the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports All or part of one CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of at least two second antenna ports.

 With reference to the first aspect, or the ninth to fourteenth possible implementation manners of the first aspect, in the fifteenth possible implementation manner, at least two of the candidate time-frequency resources partially overlap each other; and/or at least The two time-frequency sub-resources partially overlap each other.

With reference to the first aspect, or the first to fifteen possible implementation manners of the first aspect, in the sixteenth possible implementation, the actual 4 special code sequence and the actual orthogonal code sequence group are utilized The CSI-RS transmitted on the time-frequency sub-resource on the occupied actual time-frequency resource performs one or any combination of channel state information measurement, synchronization, and radio resource management RRM measurement.

 With reference to the first aspect, or the first to sixteen possible implementation manners of the first aspect, in the seventeenth possible implementation manner, according to the detected actual scrambling code sequence and the actual orthogonal code sequence And determining the configuration information of the cell corresponding to the cell identifier, where the configuration information includes one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type, and a duplex type of the corresponding cell.

 With reference to the first aspect, or the first to the seventeenth possible implementation manners of the first aspect, in the eighteenth possible implementation, the synchronization channel is detected to obtain a synchronization sequence; according to the synchronization sequence and/or the synchronization And acquiring a time-frequency position of the at least one candidate time-frequency resource; or, according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence, Determining a cell identifier; or determining channel candidate information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.

 The second aspect provides a method for sending information, including: acquiring at least one candidate time-frequency resource, and determining sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code a sequence and at least one candidate orthogonal code sequence group; determining, from the at least one candidate time-frequency resource, an actual time-frequency resource, at least one candidate scrambling code sequence included in sequence information corresponding to the actual time-frequency resource, and at least one Determining an actual scrambling code sequence and an actual orthogonal code sequence in the candidate orthogonal code sequence group; and transmitting, on the actual time-frequency resource, the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE, Determining, by the UE, a cell identity according to at least the actual 4 code sequence and the actual orthogonal code sequence.

 With reference to the second aspect, in a first possible implementation, the candidate time-frequency resource is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is at least two Orthogonal frequency division multiplexing OFDM symbols in which the secondary synchronization signal SSS is located.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation, the at least one candidate time-frequency resource is a different time-frequency resource in one subframe; or The at least one candidate time-frequency resource is a time-frequency resource in a different subframe. With reference to the second aspect, or the first to the second possible implementation manners of the second aspect, in a third possible implementation manner, the candidate scrambling code sequence is a pseudo random sequence, or an initialization sequence of a pseudo random sequence; The candidate orthogonal code sequence group is a Walsh Walsh sequence group.

 With reference to the second aspect, or the first to third possible implementation manners of the second aspect, in a fourth possible implementation, the actual scrambling code sequence and the actual orthogonal code sequence,

With reference to the second aspect, or the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation, the UE is configured to perform the at least the actual scrambling code sequence and the actual orthogonal code sequence Determining the cell identifier, the method includes: determining, by the UE, the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or: causing the UE to perform the orthogonal according to the actual scrambling sequence The code sequence, and the actual scrambling code sequence and the actual time-frequency resources occupied by the actual orthogonal code sequence, determine the cell identity.

 With reference to the second aspect, or the first to fifth possible implementation manners of the second aspect, in the sixth possible implementation manner, the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource Corresponding to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

 With reference to the second aspect, or the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner, in a frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource Generating, respectively, an actual scrambling code sequence corresponding to each of the time-frequency sub-resources; and generating, in the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, the generated and the each time-frequency The actual scrambling code sequence corresponding to the sub-resource is separately spread by the actual orthogonal code sequence corresponding to each of the time-frequency sub-resources.

With reference to the second aspect, or the first to seventh possible implementation manners of the second aspect, in an eighth possible implementation manner, the actual scrambling code sequence and the location are sent to the UE on the actual time-frequency resource The actual orthogonal code sequence includes: transmitting, on each time-frequency sub-resource in the actual time-frequency resource, an actual scrambling code sequence corresponding to the actual time-frequency resource, and in the actual And transmitting, according to the correspondence between the time-frequency sub-resource and the actual orthogonal code sequence group, the actual orthogonal code sequence group corresponding to the time-frequency sub-resource in the time-frequency sub-resource in the time-frequency resource The actual orthogonal code sequence.

 With reference to the second aspect, or the first to eighth possible implementation manners of the second aspect, in a ninth possible implementation manner, the UE is configured to perform the at least the actual scrambling code sequence and the actual orthogonal code sequence Determining the cell identifier, the method includes: determining, by the UE, the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or The actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual orthogonal code sequence. The actual time-frequency resource occupied is used to determine the cell identity.

 With reference to the sixth to the nine possible implementations of the second aspect, in the tenth possible implementation, the candidate time-frequency resource includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, where The first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the candidate orthogonality corresponding to the time-frequency sub-resource included in the first time-frequency sub-resource group The code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.

 With reference to the tenth possible implementation manner of the foregoing aspect, in the eleventh possible implementation, the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports. All or part of the CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of the at least two second antenna ports.

 With reference to the tenth or eleventh possible implementation manners of the second aspect, in a twelfth possible implementation, at least two of the candidate time-frequency resources partially overlap each other; and/or at least two of the times The frequency sub-resources partially overlap each other.

With reference to the second aspect, or the first to the twelfth possible implementation manners of the second aspect, in the thirteenth possible implementation manner, the UE is configured according to the actual scrambling code sequence and the actual orthogonal code The sequence determines the configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell. One or any combination.

 With reference to the second aspect, or the first to thirteen possible implementation manners of the second aspect, in the fourteenth possible implementation manner, the synchronization sequence is sent on the synchronization channel; and the UE is configured according to the synchronization sequence and And obtaining a time-frequency location of the at least one candidate time-frequency resource, where the time-frequency resource location of the synchronization sequence is located; or, causing the UE to detect the actual scrambling code sequence according to the obtained synchronization information. And determining, by the actual orthogonal code sequence, a cell identifier; or, determining, by the UE, channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.

 In a third aspect, a user equipment UE is provided, including: a first determining unit, configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information is Included at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; the detecting unit, configured to detect, on the at least one candidate time-frequency resource, the determined sequence information corresponding to the at least one candidate time-frequency resource a candidate scrambling code sequence and a candidate orthogonal code sequence group, obtaining an actual scrambling code sequence and an actual orthogonal code sequence in the actual orthogonal code sequence group; and a second determining unit, configured to use at least the detected actual scrambling code The sequence and the actual orthogonal code sequence determine a cell identity.

 With reference to the third aspect, in a first possible implementation manner, the candidate time-frequency resource acquired by the first determining unit is at least one channel state information reference signal CSI-RS resource of the first antenna port; or The candidate time-frequency resource acquired by a determining unit is an orthogonal frequency division multiplexing OFDM symbol in which at least two secondary synchronization signals SSS are located.

 With reference to the third aspect, or the first possible implementation manner of the third aspect, in the second possible implementation manner, the at least one candidate time-frequency resource acquired by the first determining unit is different time in one subframe Or the at least one candidate time-frequency resource acquired by the first determining unit is a time-frequency resource in a different subframe.

With reference to the third aspect, or the first to the second possible implementation manners of the third aspect, in a third possible implementation manner, the acquiring, by the first determining unit, the at least one candidate time-frequency resource, specifically: pre-storing Describe at least one candidate time-frequency resource; or, according to the received base station The signaling acquires the at least one candidate time-frequency resource.

 With reference to the third aspect, or the first to the third possible implementation manners of the third aspect, in a fourth possible implementation manner, the determining, by the first determining unit, determining a sequence corresponding to the at least one candidate time-frequency resource The information includes: pre-storing sequence information corresponding to the at least one candidate time-frequency resource; or acquiring sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station.

 With reference to the third aspect, or the first to fourth possible implementation manners of the third aspect, in the fifth possible implementation manner, the candidate scrambling code sequence determined by the first determining unit is a pseudo random sequence, or is a pseudo An initialization sequence of the random sequence; the candidate orthogonal code sequence group determined by the first determining unit is a Walsh Walsh sequence group.

 With reference to the third aspect, or the first to fifth possible implementation manners of the third aspect, in the sixth possible implementation manner, the candidate scrambling code sequence and the candidate candidate included in the sequence information determined by the first determining unit a code sequence group, the candidate scrambling code sequence is a sequence generated in a frequency domain direction of the candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is A sequence generated by spreading the generated candidate scrambling code sequence in a time domain direction of the candidate time-frequency resource.

 With reference to the third aspect, or the first to sixth possible implementation manners of the third aspect, in a seventh possible implementation, the detecting unit is specifically configured to: determine, received on the candidate time-frequency resource a candidate scrambling code sequence and a candidate orthogonal code sequence included in the sequence information corresponding to the candidate time-frequency resource and a candidate orthogonal code sequence in the candidate orthogonal code sequence group, respectively, in the scrambling code sequence and the orthogonal code sequence in the orthogonal code sequence group When the code sequences match, the matched candidate scrambling code sequence and the candidate orthogonal code sequence are taken as the actual 4 U code sequence and the actual orthogonal code sequence.

With reference to the third aspect, or the first to the seventh possible implementation manners of the third aspect, in the eighth possible implementation, the determining unit is specifically configured to: according to the detected actual scrambling code sequence, Determining a cell identifier according to the actual orthogonal code sequence; or, according to the detected actual scrambling code sequence, the actual orthogonal code sequence, and the actual scrambling code sequence and the actual orthogonal code sequence The actual time-frequency resource determines the cell identity. With reference to the third aspect, or the first to eighth possible implementation manners of the third aspect, in the ninth possible implementation manner, the candidate time-frequency resource determined by the first determining unit includes N time-frequency sub-resources, Each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 35.

 With reference to the ninth possible implementation manner of the third aspect, in a tenth possible implementation manner, the candidate scrambling code sequence determined by the first determining unit is, each candidate time-frequency resource corresponding to the sequence information a sequence generated in a frequency domain direction of the time-frequency sub-resource; the candidate orthogonal code sequence in the candidate orthogonal code sequence group determined by the first determining unit is, each candidate time-frequency resource corresponding to the sequence information The time domain direction of the time-frequency sub-resources, the sequence generated by spreading the generated candidate scrambling code sequences.

 With reference to the ninth or ten possible implementation manners of the third aspect, in the eleventh possible implementation, the detecting unit is specifically configured to: detect and detect each time-frequency sub-resource of the candidate time-frequency resource a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, obtaining an actual scrambling code sequence, and each time-frequency sub-resource of the candidate time-frequency resource, according to the time-frequency sub-resource and the candidate orthogonal code sequence group Corresponding relationship, detecting a corresponding candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

 With reference to the eleventh possible implementation manner of the third aspect, in a twelfth possible implementation manner, the determining unit is specifically configured to: according to the detected actual sequence corresponding to each time-frequency sub-resource, Determining the cell identifier; or determining, according to the detected actual column corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual time-frequency resource occupied by the actual orthogonal code sequence, determining the cell identifier i only.

With reference to the ninth to twelfth possible implementation manners of the third aspect, in the thirteenth possible implementation manner, the candidate time-frequency resource acquired by the first determining unit includes a first time-frequency sub-resource group and a second a time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the time included in the first time-frequency sub-resource group Frequency resource The corresponding candidate orthogonal code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.

 With reference to the thirteenth possible implementation manner of the third aspect, in the fourteenth possible implementation, the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports All or part of one CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of at least two second antenna ports.

 With reference to the third aspect, or the ninth to fourteenth possible implementation manners of the third aspect, in the fifteenth possible implementation manner, the at least two candidate time-frequency resources acquired by the first determining unit are mutually Partially overlapping; and/or, at least two of the time-frequency sub-resources partially overlap each other.

 With the third aspect, or the first to fifteen possible implementation manners of the third aspect, in the sixteenth possible implementation, the communications unit is further configured to send by using the source The CSI-RS performs one or any combination of channel state information measurement, synchronization, and radio resource management RRM measurement.

 With reference to the third aspect, or the first to the sixteenth possible implementation manners of the third aspect, in the seventeenth possible implementation, the determining unit is specifically configured to: according to the detected actual scrambling code sequence And determining, by the actual orthogonal code sequence, configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell. One or any combination.

 With reference to the third aspect, or the first to the seventeenth possible implementation manners of the third aspect, in the eighteenth possible implementation, the acquiring unit is further configured to: detect a synchronization channel to obtain a synchronization sequence; Or determining a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or determining, according to the obtained synchronization sequence, Channel candidate information of the candidate scrambling code and/or the candidate orthogonal code.

In a fourth aspect, a base station is provided, including: a first acquiring unit, configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, where The sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group. The second acquiring unit is configured to determine an actual time-frequency resource from the at least one candidate time-frequency resource acquired by the first acquiring unit, Determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in the sequence information corresponding to the actual time-frequency resource; Sending, by the second acquiring unit, the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE, so that the UE is at least according to the actual scrambling code, on the actual time-frequency resource determined by the second acquiring unit. The sequence and the actual orthogonal code sequence determine a cell identity.

 With reference to the second aspect, in a first possible implementation manner, the candidate time-frequency resource acquired by the first acquiring unit is at least one channel state information reference signal CSI-RS resource of the first antenna port; or The candidate time-frequency resource acquired by an acquiring unit is an orthogonal frequency division multiplexing OFDM symbol in which at least two secondary synchronization signals SSS are located.

 With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner, the at least one candidate time-frequency resource acquired by the first acquiring unit is different time in one subframe Or the at least one candidate time-frequency resource acquired by the first acquiring unit is a time-frequency resource in a different subframe.

 With reference to the second aspect, or the first to the second possible implementation manners of the second aspect, in a third possible implementation manner, the candidate scrambling code sequence determined by the first acquiring unit is a pseudo random sequence, or is a pseudo An initialization sequence of the random sequence; the candidate orthogonal code sequence group determined by the first acquiring unit is a Walsh Walsh sequence group.

 With reference to the second aspect, or the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, the actual scrambling code sequence determined by the second acquiring unit and the actual actual The time domain direction on the time-frequency resource, and the generated actual scrambling code sequence is spread by the actual orthogonal code sequence.

With reference to the second aspect, or the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation, the sending unit is specifically configured to: enable the UE to perform the actual scrambling code sequence according to the second And determining, by the column and the actual orthogonal code sequence, a cell identifier; or, causing the UE to perform, according to the actual scrambling code sequence, the actual orthogonal code sequence, the actual scrambling code sequence, and the actual orthogonal code. The actual time-frequency resource occupied by the sequence determines the cell identity.

 With reference to the second aspect, or the first to fifth possible implementation manners of the second aspect, in the sixth possible implementation manner, the candidate time-frequency resource acquired by the first acquiring unit includes N time-frequency sub-resources, Each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

 With reference to the second aspect, or the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner, in a frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource Generating, respectively, an actual scrambling code sequence corresponding to each of the time-frequency sub-resources; and generating, in the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, the generated and the each time-frequency The actual scrambling code sequence corresponding to the sub-resource is separately spread by the actual orthogonal code sequence corresponding to each of the time-frequency sub-resources.

 With reference to the second aspect, or the first to the seventh possible implementation manners of the second aspect, in the eighth possible implementation, the sending unit is specifically configured to: in each of the actual time-frequency resources And transmitting, to the UE, an actual scrambling code sequence corresponding to the actual time-frequency resource, and each time-frequency sub-resource in the actual time-frequency resource, according to the time-frequency sub-resource and the The correspondence between the actual orthogonal code sequence groups is performed, and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to the time-frequency sub-resource is transmitted.

 With reference to the second aspect, or the first to the eighth possible implementation manners of the second aspect, in the ninth possible implementation manner, the sending unit is specifically configured to: enable the UE to perform the time-frequency according to each The actual scrambling code sequence corresponding to the resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource, determining a cell identifier; or, causing the UE to perform an actual scrambling code sequence corresponding to each time-frequency sub-resource, The actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual time-frequency resource occupied by the actual orthogonal code sequence, determine a cell identifier.

With reference to the sixth to the nine possible implementations of the second aspect, in a tenth possible implementation, the candidate time-frequency resource acquired by the first acquiring unit includes a first time-frequency sub-resource group and a second time a frequency sub-resource group, wherein the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively comprise at least one time-frequency sub-resource, and the time-frequency included in the first time-frequency sub-resource group The candidate orthogonal code sequences corresponding to the sub-resources are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.

 With reference to the tenth possible implementation manner of the foregoing aspect, in the eleventh possible implementation, the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports. All or part of the CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of the at least two second antenna ports.

 With reference to the tenth or eleventh possible implementation manners of the second aspect, in a twelfth possible implementation, the at least two candidate time-frequency resources acquired by the first acquiring unit partially overlap each other; and Or, at least two of the time-frequency sub-resources acquired by the first acquiring unit partially overlap each other.

 With reference to the second aspect, or the first to the twelfth possible implementation manners of the second aspect, in the thirteenth possible implementation manner, the sending unit is further configured to: enable the UE to perform the actual scrambling code according to the actual The sequence and the actual orthogonal code sequence determine configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell. One or any combination.

 With reference to the second aspect, or the first to thirteen possible implementation manners of the second aspect, in the fourteenth possible implementation manner, the first acquiring unit is further configured to: send a synchronization acquiring station on the synchronization channel Determining, by the UE, the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or And causing the UE to determine channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.

 In the embodiment of the present invention, a method for detecting and transmitting information is provided, where

An information detection method is: acquiring at least one candidate time-frequency resource, and determining sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group Detecting the determined at least one candidate time-frequency resource Obtaining a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information corresponding to the at least one candidate time-frequency resource, obtaining an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group; The actual scrambling sequence and the actual orthogonal code sequence determine the cell identity. Thus, since each candidate time-frequency resource can be any position of the carrier center, or even not limited to six resource blocks in the carrier center, any two If the probability of overlapping the candidate time-frequency resources is small, the interference between the signals transmitted on any two candidate time-frequency resources is small, and therefore, the interference when the UE detects the actual scrambling code sequence and the actual orthogonal code sequence is reduced. The time required for the UE to determine the cell identity is shortened, the efficiency of determining the cell identity is improved, and the accuracy of the determined cell identity is improved. At the same time, the cell identity is determined by the actually detected scrambling code sequence and the orthogonal code sequence. And the scrambling code sequence and the orthogonal code sequence can reduce the interference, and therefore, the UE is further determined in the heterogeneous network. When the cell is identified, there are problems of long time consuming, low efficiency and poor accuracy;

A method for transmitting information is: acquiring at least one candidate time-frequency resource, and determining sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group Determining the actual time-frequency resource from the at least one candidate time-frequency resource, determining the actual scrambling code sequence from the at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and the at least one candidate orthogonal code sequence group An actual orthogonal code sequence; on the actual time-frequency resource, the actual scrambling code sequence and the actual orthogonal code sequence are sent to the user equipment UE, so that the UE determines the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence, so Each candidate time-frequency resource may be any position of the carrier center, or may not be limited to 6 resource blocks in the carrier center, and any two candidate time-frequency resources are less likely to overlap, and in any two candidate times The interference between the signals transmitted on the frequency resources is small, thus reducing the actual scrambling sequence of the base station transmission The interference with the actual orthogonal code sequence shortens the time required for the UE to determine the cell identity, improves the efficiency of determining the cell identity, and determines the accuracy of the cell identity. At the same time, the cell identity is the actual interference transmitted. The code sequence and the actual orthogonal code sequence are determined, and the scrambling code sequence and the orthogonal code sequence can reduce interference, and therefore, further solving the problem that when the UE determines the cell identity in the heterogeneous network, the time consuming is long. Low efficiency and poor accuracy. DRAWINGS

 1A is a schematic diagram of resource locations of reference signals in a resource block in an existing LTE system; FIG. 1B is a schematic diagram of A time-frequency resources including Al and A2 time-frequency sub-resources according to an embodiment of the present invention; B time-frequency resource includes a schematic diagram of time-frequency sub-resources of B1 and B2; FIG. 2 is a detailed flowchart of information detection in an embodiment of the present invention;

 3A is a schematic diagram of resource locations of reference signals in a resource block in an LTE system according to an embodiment of the present invention;

 3B is a schematic diagram of the coexistence of sequence information and CSI-RS in the embodiment of the present invention; FIG. 3C is a schematic diagram of the case where the sequence information and the CSI-RS coexist without blurring according to the embodiment of the present invention; FIG. 4 is a schematic diagram of information transmission according to an embodiment of the present invention; Detailed flow chart;

 FIG. 5 is a schematic structural diagram of functions of a UE for detecting information according to an embodiment of the present disclosure;

 FIG. 6 is a schematic structural diagram of a function of a base station for transmitting information according to an embodiment of the present invention. detailed description

 In the embodiment of the present invention, a method for detecting information and a message are provided in the embodiment of the present invention, in order to solve the problem that the UE determines the cell identifier in the heterogeneous network, which is time-consuming, inefficient, and inaccurate. The method of sending can effectively avoid the problem that the UE has a long time, low efficiency and poor accuracy when determining the cell identity.

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The term "and/or" in this context is merely an association that describes the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations. In addition, the character "/,," in this article generally means that the contextual object is an "or" relationship. Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

 Referring to FIG. 2, in the embodiment of the present invention, the detailed process of information detection is as follows:

 Embodiment 1:

 Step 200: Acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group;

 Step 210: Detect a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource, and obtain the actual scrambling code sequence and the actual orthogonal code. The actual orthogonal code sequence in the sequence group;

 Step 220: At least the cell identification is determined according to the detected actual 4 code sequence and the actual orthogonal code sequence.

 In the embodiment of the present invention, in the step 200, the type of the candidate time-frequency resource that is acquired by the UE is multiple. Preferably, the candidate time-frequency resource is at least one CSI-RS of the first antenna port (Channel State Information-Reference Signal). The channel state information reference signal is a resource; or, the candidate time-frequency resource is an OFDM symbol in which at least two SSSs are located.

 When the candidate time-frequency resource is at least one CSI-RS of the first antenna port, the CSI-RS resource of the first antenna port has the most resource unit of the CSI-RS resource, and therefore, the candidate time-frequency resource is preferably At least one 8-antenna port CSI-RS resource of an antenna port, as shown in FIG. 1A, A and B, that is, A and B are combined into one 8-antenna port CSI-RS resource. In practical applications, different cells can select different 8-antenna port CSI-RS resources, so that reference signals of different cells can achieve interference coordination, enhance the detection performance of reference signals, and can also reuse existing CSI-RS. Resource location, simplified system design and implementation complexity.

 The foregoing is only a preferred embodiment of the candidate time-frequency resource type. In practical applications, the candidate time-frequency resource is a CSI-RS resource that can also be another antenna port (such as a 4-antenna port or a smaller number of antenna ports). It can also be an OFDM symbol in which at least two SSSs are located.

In the embodiment of the present invention, in step 200, the at least one candidate time-frequency resource acquired by the UE may be different time-frequency resources in one subframe, for example, different 8-antenna port CSI-RS resources in one subframe; It may also be a time-frequency resource in different subframes, for example, an 8-antenna port CSI-RS resource of subframe 1 and an 8-antenna port CSI-RS resource of subframe 2.

 In the embodiment of the present invention, in the step 200, the method for the UE to obtain the at least one candidate time-frequency resource is used in multiple manners. For example, at least one candidate time-frequency resource may be pre-stored in the UE, and for example, the UE may receive the The signaling sent by the base station to obtain at least one candidate time-frequency resource, where the signaling sent by the base station may be RRC (Radio Resource Control) signaling, or may be MAC (Medium Access Control). Layer signaling, which can also be physical layer signaling (such as physical downlink control channel, etc.).

 Similarly, in step 200, the UE determines the sequence information corresponding to the at least one candidate time-frequency resource. For example, the sequence information corresponding to the at least one candidate time-frequency resource is pre-stored in the UE, and, for example, according to the received The signaling sent by the base station acquires sequence information corresponding to the at least one candidate time-frequency resource, where the signaling sent by the base station may be RRC signaling, MAC layer signaling, or physical layer signaling (such as physical downlink). Control channel, etc.).

 In the embodiment of the present invention, there are multiple types of candidate scrambling code sequences, preferably a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence, or an initialization parameter in an initialization sequence, where the candidate scrambling code sequence is When the pseudo-random sequence is used, it may be an M sequence or a Gold sequence.

 For example, when the Gold sequence is shown in Equation 1, the candidate scrambling code sequence may be Equation 1, or may be an initialization sequence of the Gold sequence, that is, Formula 2, or may be an initialization parameter in the initialization sequence, that is, '.

r _lrh {m)=^= \-2-c{2m)) + j^=(\-2-c(2m + \)), w = 0,l,...,Nl (Formula 1) r denotes the Gold sequence; _s is the slot number (one subframe includes two slots); / is the OFDM symbol number in one slot; TV is the number of resource blocks; J' is the imaginary part identifier of the complex number; Is a generator function determined by the shift register; and (l_2.c(2)) and (l_2.c(2 + l)) are both

M sequence.

c _mit =2 ¹⁰ -(7-(w _s +l)+/+l)-(2-A3⁄4 ^w +l)+2-A3⁄4 ^w (Formula 2) Where c _mit represents the initialization sequence of the Gold sequence; it is the initialization parameter. In the embodiment of the present invention, there are also multiple types of candidate orthogonal code sequence groups. Preferably, the candidate orthogonal code sequence group is a Walsh sequence group.

 For example, the Walsh sequence group is a binary sequence group, and the two orthogonal code sequences included are {1, 1} and {1, -1}, respectively, and the candidate orthogonal code sequence group is ({1, 1}, {1 , -1} ).

 In the embodiment of the present invention, the Walsh sequence group may be a binary code group, a quaternary code group, or an octal code group, where any two Walsh sequence groups may be sequence groups of the same dimension, or For a sequence group of different dimensions, for example, a Walsh sequence group corresponding to one candidate time-frequency resource is a binary code group, and a Walsh sequence group corresponding to another candidate time-frequency resource is a quaternion code group.

Since each candidate time-frequency resource corresponds to sequence information, and the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group, each candidate time-frequency resource carries at least one candidate scrambling code sequence and At least one candidate orthogonal code sequence group, in the embodiment of the present invention, there are multiple ways for the candidate time-frequency resource to carry the candidate scrambling code sequence and the candidate orthogonal code sequence group. Preferably, the candidate scrambling code sequence is, in the sequence to which the candidate is located. a sequence generated in the frequency domain direction of the candidate time-frequency resource corresponding to the information; the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a candidate interference generated in the time domain direction of the candidate time-frequency resource corresponding to the sequence information The sequence generated by spreading the code sequence is specifically: For an OFDM symbol, the scrambling code sequence is a sequence generated on a plurality of resource blocks including the OFDM symbol, and the orthogonal code sequence is OFDM in each resource element. A sequence generated by spreading the generated scrambling sequence on the subcarrier in the time domain direction, that is, for an OFDM a symbol, first generating a scrambling code sequence on a plurality of resource blocks including the OFDM symbol, and then performing orthogonal code spreading in a time domain direction on the scrambling code sequence on the OFDM subcarrier of each resource unit, where The generation process is performed by the base station.

For example, for a certain OFDM symbol, a 4 sigma sequence is first generated on a plurality of resource blocks including the OFDM symbol, for example, a central 6 resource blocks on one OFDM symbol or all resource blocks on the carrier are generated. The code sequence is then subjected to orthogonal code spreading in the time domain direction for the scrambling code sequence. In this embodiment, if there are 100 resource blocks including the OFDM symbol (100 of them) Each resource block in the resource block has a resource unit for carrying the above scrambling code, and the frequency domain scrambling code sequence length is 100, and then, for each of the 100 resource units carrying the scrambling code sequence. In the unit, the orthogonal sequence code is used for time domain spreading. In this case, if the orthogonal sequence code is a binary orthogonal sequence code, the result of the spreading is that the scrambling sequence can occupy two OFDM in the time domain. symbol.

 The above embodiment is only a preferred embodiment. In practical applications, there are various methods, which are not repeated here.

 In the embodiment of the present invention, in step 210, the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource are detected on the at least one candidate time-frequency resource, where Obtaining the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group may also be selecting the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group.

 In the embodiment of the present invention, in step 210, the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource are detected on the at least one candidate time-frequency resource, and obtained or There are multiple ways to select the actual 4th code sequence and the actual orthogonal code sequence group in the actual orthogonal code sequence group. Preferably, the scrambling code sequence and the orthogonal code sent by the base station received on the candidate time-frequency resource are determined. The orthogonal code sequences in the sequence group are matched with the combination of the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource and the candidate orthogonal code sequence in the candidate orthogonal code sequence group, respectively. The candidate scrambling code sequence and the candidate orthogonal code sequence are used as an actual scrambling code sequence and an actual orthogonal code sequence. And determining, in the candidate time-frequency resource, the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group, and the candidate scrambling code sequence and candidate included in the sequence information corresponding to the candidate time-frequency resource respectively. When the combination of candidate orthogonal code sequences in the orthogonal code sequence group matches, the maximum likelihood detection algorithm can be used, and the correlation algorithm can also be used.

For example, the two candidate time-frequency resources obtained or selected are: a first candidate time-frequency resource and a second candidate time-frequency resource, and the sequence information corresponding to the first candidate time-frequency resource includes a first scrambling code sequence and a second scrambling code. The sequence and a binary Walsh sequence group ({1, 1}, {1, -1}), and the sequence information corresponding to the second candidate time-frequency resource includes a third scrambling code sequence, a fourth scrambling code sequence, and a binary Walsh The sequence group ({1, 1}, {1, -1}), the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received by the UE on the first candidate time-frequency resource, respectively With the first combination, the second combination, the third group Combining the fourth combination and performing matching, the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received by the UE on the second candidate time-frequency resource are respectively combined with the fifth combination, the sixth combination, and the The seventh combination and the eighth combination are matched, and the candidate scrambling code sequence and the candidate orthogonal code sequence included in the matched combination are respectively used as an actual scrambling code sequence and an actual orthogonal code sequence, wherein the first combination is (first interference) The code sequence + Walsh sequence {1, 1} ), the second combination is (first scrambling code sequence + Walsh sequence {1, -1} ), and the third combination is (second scrambling code sequence + Walsh sequence {1, 1 } ) , the fourth combination is (the second scrambling code sequence + Walsh sequence {1, -1} ), the fifth combination is (the third scrambling code sequence + Walsh sequence {1, 1} ), and the sixth combination is (the The third scrambling code sequence + Walsh sequence {1, -1} ), the seventh combination is (fourth scrambling code sequence + Walsh sequence { 1 , 1 } ), and the eighth combination is (fourth scrambling code sequence + Walsh sequence { 1 , -1} ) .

 In the embodiment of the present invention, in step 220, there are multiple ways to determine the cell identifier according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence. Preferably, according to the detected actual scrambling code sequence and the actual positive The cross-code sequence determines the cell identity, or determines the cell identity according to the detected actual 4 code sequence, the actual orthogonal code sequence, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

 For example, the two actual time-frequency resources obtained or selected are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the The actual scrambling sequence carried on the actual time-frequency resource is 2 and 3. The actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ({1, -1}). (1, 1}), wherein the actual scrambling code sequence is a candidate scrambling code sequence obtained or selected from the candidate scrambling code sequence by using a maximum likelihood detection algorithm or a correlation algorithm, and the actual orthogonal code sequence is a candidate orthogonal The candidate orthogonal code sequence obtained or selected by the maximum likelihood detection algorithm or the related algorithm in the code sequence, and the actual time-frequency resource is the candidate time-frequency resource in which the actual scrambling code sequence and the actual orthogonal code sequence are located, the UE may determine The maximum number of cell identifiers is: (0+{1, 1} ), (0+{1, -1} ), (1+{1, 1} ), (1+{1, -1) } ) , ( 2+{1, 1} ) , ( 2+{1, -1} ) , (3+{1, 1} ) , (3+{1, -1} ).

For example, the two actual time-frequency resources obtained or selected are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the The actual scrambling sequence carried on the actual time-frequency resource is 0 and 1, and the actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ({1, -1}). (1, 1}), wherein the actual scrambling sequence is a candidate scrambling code sequence obtained or selected from the candidate scrambling code sequence using a maximum likelihood detection algorithm or a correlation algorithm, and the actual orthogonal code sequence is a candidate orthogonal The candidate orthogonal code sequence obtained or selected by the maximum likelihood detection algorithm or the related algorithm in the code sequence, and the actual time-frequency resource is the candidate time-frequency resource in which the actual scrambling code sequence and the actual orthogonal code sequence are located, the UE may determine The maximum number of cell identifiers is: (first actual time-frequency resource +0+{1, 1}), (first actual time-frequency resource +0+{1, -1}), (first actual Time-frequency resource +1+{1 , 1} ), (first actual time-frequency resource +1+{1 , -1} ), (second actual time-frequency resource +0+{1 , 1} ), (first 2 actual time-frequency resources +0+{1 , -1} ), (second actual time-frequency resource +1+{1 , 1} ), (second actual time-frequency resource +1+{1 , -1} ) .

 The cells that are orthogonal to any two orthogonal code sequences are orthogonal, and any two orthogonal code sequences are the same but the cells with different scrambling sequences are pseudo-orthogonal. In the embodiment of the present invention, The cross-design design reduces the interference between cells, and the pseudo-orthogonalization design improves the multiplexing rate of time-frequency resources while providing a certain number of cell identifiers.

 For example, if several neighboring cells form a cell cluster 1 and several other neighboring cells form a cell cluster 2, the orthogonalization design can be used between the cells included in the cell cluster 1 to reduce the cell cluster. 1 Interference between the included cells, the orthogonal design includes multiple orthogonal sequence codes in one orthogonal sequence code group, or different candidate time-frequency resources may be used if the number of orthogonal sequence codes is insufficient. The orthogonal sequence code design is performed; the pseudo-orthogonalization design can be adopted between the cells included in the cell cluster 2, and the multiplexing rate of the time-frequency resources is improved when a certain number of cell identifiers are provided.

 Further, in the embodiment of the present invention, the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource is respectively associated with at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource. Correspondingly, where N is an integer greater than one.

For example, a candidate time-frequency resource is an 8-antenna port CSI-RS resource, and an 8-antenna port CSI-RS resource includes four time-frequency sub-resources, and the time-frequency sub-resources are frequency-divided, as shown in FIG. A and B, A includes two time-frequency sub-resources: A1 time-frequency sub-resource and A2 time-frequency sub-resource (as shown in FIG. 1B), and B includes two time-frequency sub-resources: B1 time-frequency sub-resource and B2 time-frequency sub-resources (as shown in Figure 1C). In the embodiment of the present invention, if the candidate time-frequency resource includes N time-frequency sub-resources, the candidate scrambling code sequence is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information. The candidate orthogonal code sequence in the candidate orthogonal code sequence group is a time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information, and a sequence generated by spreading the generated candidate scrambling code sequence .

 Similarly, if the candidate time-frequency resource includes N time-frequency sub-resources, the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource are detected on the candidate time-frequency resource. When the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group are obtained, the sequence information corresponding to the time-frequency sub-resource is detected on each time-frequency sub-resource of the candidate time-frequency resource. The candidate scrambling code sequence obtains the actual scrambling code sequence, and detects the corresponding candidate orthogonal code sequence according to the correspondence between the time-frequency sub-resource and the candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resource. Group, obtain the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

 Further, if the candidate time-frequency resource includes N time-frequency sub-resources, the cell identifier is determined according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence, and at least according to the detected each time-frequency sub-resource The actual 4 code sequence, and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, determine the cell identity; or, according to at least each time-frequency sub-interval code sequence detected And the actual time-frequency sub-resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence to determine the cell identity.

 In order to improve the accuracy of obtaining the actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group, and reducing the complexity, the number of time-frequency sub-resources included in the candidate time-frequency resources can be reduced, and the positive limit is simultaneously limited. The number of cross-code sequence groups. A and B, A shown in FIG. 1A may include A1 and A2 shown in FIG. 1B, and may not include any time-frequency sub-resource. Similarly, B may include B1 and B2 shown in FIG. 1C. It is also possible not to include any time-frequency sub-resources.

Further, in order to reduce the interference between the cells corresponding to the determined cell identifier, and to improve the multiplexing rate of the time-frequency resources and provide more cell identifiers, in the embodiment of the present invention, the candidate time-frequency resources The first time-frequency sub-resource group and the second time-frequency sub-resource group are respectively included, and the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the first time-frequency sub-resource The candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the group are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal, In the above case, by making the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group orthogonal, the interference between the cells can be reduced, by using the second time-frequency sub-resource group. The candidate orthogonal code sequences corresponding to the time-frequency sub-resources are identical or pseudo-orthogonal, which can improve the multiplexing rate of the time-frequency resources and provide more cell identifiers.

 For example, one candidate time-frequency resource C shown in FIG. 3A is divided into two time-frequency sub-resources, and each time-frequency sub-resource has two orthogonal code sequences, and a total of four kinds of sequence information are provided, as shown in FIG. 3B. The possible orthogonal sequence codes respectively provided by the AP ID 0 and the AP ID 3 are orthogonal, that is, the two orthogonal code sequences corresponding to the first time-frequency sub-resource are the same, and the second time-frequency sub- The two orthogonal code sequences corresponding to the resource are also the same; the possible orthogonal sequence codes provided by AP ID 0 and AP ID1 are not completely orthogonal, that is, the two orthogonal frequencies corresponding to the first time-frequency sub-resource The sequence is the same. The two orthogonal sequences corresponding to the second time-frequency sub-resource are orthogonal. In this case, the scrambling code sequence corresponding to the candidate time-frequency sub-resource may be the same or pseudo-orthogonal. If the scrambling code sequence is pseudo-orthogonal, the reference signals corresponding to different cells are pseudo-orthogonal even if the orthogonal code sequences are the same. Since the possible orthogonal sequence codes respectively provided by AP ID 0 and AP ID1 are not completely orthogonal, the candidate time-frequency resources combined by the above-mentioned time-frequency sub-resources are partially orthogonal to each other, compared to completely orthogonalization. The design (AP ID 0 and AP ID 3) can improve the bearer efficiency of the cell identity. In the actual application, the combination of the restricted codewords can improve the bearer efficiency of the cell identity, which is not described here.

In the embodiment of the present invention, the first set of time-frequency sub-resources includes all or one of the CSI-RS resources of the at least two second antenna ports, in order to avoid the false alarm problem of the cell detection corresponding to the cell identifier. In part, the second set of time-frequency sub-resources includes all or part of each of the CSI-RS resources of the at least two second antenna ports. Sub-), each time-frequency sub-resource corresponds to a set of binary orthogonal code sequences, and the candidate time-frequency resource C corresponds The sequence information is co-existed with the CSI-RS of the 4-antenna port. As shown in FIG. 3B, the sequence information corresponding to the candidate time-frequency resource D and the CSI-RS of the 4-antenna port coexist without blurring, as shown in FIG. 3C. For the division of the first group of time-frequency sub-resources and the second group of time-frequency sub-resources, FIG. 3B is divided according to the 4-antenna port CSI-RS resources, that is, each group of time-frequency sub-resources includes only one complete 4-antenna port. Each part of the CSI-RS 4 antenna port CSI-RS resources. For the case shown in FIG. 3B, if only one cell sends the PCI0 identifier, that is, the sequence information corresponding to the AP ID 0, and the cell also sends a CSI-RS resource (AP ID 2) of the 4-antenna port, the UE is When the cell corresponding to the obtained AP ID 0 is detected, the obtained cell of the AP ID 2 is also detected. Therefore, in the case of FIG. 3A, the false alarm problem of the cell detection corresponding to the cell identifier may occur; for the situation shown in FIG. 3C Although the 4 antenna port CSI-RS resource is configured, since the first group of time-frequency sub-resources and the second group of time-frequency sub-resources are divided, the occurrence of the orthogonal code sequence combination is avoided, and the cell corresponding to the cell identifier is avoided. False alarm problem detected. In the above embodiment, the second antenna port is 4 ports.

 Further, in order to maintain a certain cell identity bearer efficiency and improve the multiplexing rate of the time-frequency resource, in the embodiment of the present invention, at least two candidate time-frequency resources partially overlap each other; and/or at least two time-frequency sub-resources Partially overlapping each other.

 For example, a candidate time-frequency resource is an 8-antenna port CSI-RS resource is divided into four time-frequency sub-resources, and the specific positions of the four time-frequency sub-resources in the frequency domain are: {0, 1}, {1, 2}, {2, 3} and {3, 0}, the frequency domain position mentioned above represents the position label of the resource unit in the frequency domain direction of the 8-antenna port CSI-RS resource, as can be seen from the above, One time-frequency sub-resource partially overlaps with the second time-frequency sub-resource, the second time-frequency sub-resource partially overlaps with the third-time-frequency sub-resource, and the third-time-frequency sub-resource partially overlaps with the fourth-time-frequency sub-resource.

 For example, the candidate time-frequency resource includes four time-frequency sub-resources. In practical applications, the candidate time-frequency resource may include more than four time-frequency sub-resources, and is not detailed here.

As described above, the CSI-RS resource can coexist with the sequence information corresponding to the determined cell identifier, and maintains the current role of the CSI-RS resource, that is, CSI measurement. Therefore, in the embodiment of the present invention, the UE may utilize the time frequency of the actual time-frequency resource occupied by the actual sequence and the actual orthogonal code sequence group. The CSI-RS resource sent on the sub-resource performs one or any combination of channel state information measurement, synchronization, and RRM measurement; that is, the UE can utilize the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence group. CSI-RS resources transmitted on all time-frequency sub-resources, performing one or any combination of channel state information measurement, synchronization, and RRM measurement, or using an actual scrambling code sequence and an actual orthogonal code sequence group The CSI-RS resource sent on the partial time-frequency sub-resource on the actual time-frequency resource performs one or any combination of channel state information measurement, synchronization, and RRM measurement.

 In the embodiment of the present invention, after determining the cell identifier from at least the detected actual scrambling code sequence and the actual orthogonal code sequence, the UE may perform the following operations:

 The RRM measurement is performed based on the determined cell identity.

 Since the time interval for the base station to transmit sequence information twice on the actual time-frequency resource is long, and the transmission density of each transmission sequence information is large, the UE can obtain more by one measurement or fewer measurement times. The RRM measurement result of the cell, therefore, reduces the time taken for the RRM measurement, saves the power of the UE, and at the same time, reduces the interference between the cells by orthogonalizing the cell identity corresponding to the cell, thereby improving the interference. The accuracy of RRM measurements.

 In the embodiment of the present invention, if the cell identifier is determined according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence, the actual scrambling code sequence and the actual orthogonal code sequence part sequence information carrying the cell identifier, and some part of the sequence information is not And carrying the cell identifier, the UE determines, according to the detected actual scrambling code sequence and the actual orthogonal code sequence, configuration information of the cell corresponding to the cell identity, where the configuration information includes a switch, an active/sleep state, a transmit power level, and a carrier of the corresponding cell. One or any combination of type and duplex type.

 For example, the configuration information is a switch of the corresponding cell, and may be specifically indicated by an orthogonal code sequence in the orthogonal code sequence group in the sequence information, for example, the orthogonal code sequence {1, 1} is an opening indication of the corresponding cell, The cross-code sequence {1, -1} is the indication of the closing of the corresponding cell; it can also be indicated by a different scrambling code sequence, for example, the scrambling code sequence 0 is the opening indication of the corresponding cell, and the scrambling code sequence 1 is the closing indication of the corresponding cell. It can also be indicated by the candidate time-frequency resource location.

When the UE determines the configuration information of the cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence, if the information is the switch of the corresponding cell, the UE may timely discover that the base station is about to close. Close, and reselect to other open cells or base stations as soon as possible to maintain mobility performance. At the same time, the power used to turn off the cell transmission sequence information can also be reduced when calculating the RSSI (Received Signal Strength Indicator). , to ensure the accuracy of the RSRQ (Reference Signal Received Quality) measurement. The above is an example in which the configuration information is a switch of the corresponding cell. In an actual application, the configuration information may also indicate other information, such as an activation/sleep state, a transmission power level, a carrier type, or a duplex type, and the indication manner is similar to the foregoing. , no longer here - detailed.

 When the base station is in an active state, data can be normally transmitted, for example, a synchronization signal, a broadcast signal, a unicast signal for scheduling, and a reference signal; when the base station is in a dormant state, the base station cannot normally transmit data, but only transmits The longer period reference signal is used by the UE to discover and measure the cell. The carrier type is divided into a backward compatible carrier type and a new carrier type. The new carrier type can be classified into a new carrier type that can be independently accessed and a new carrier type that cannot be independently accessed, and cannot be used for a lower version of the UE. In.

 In an actual application, if the UE directly acquires at least one candidate time-frequency resource and directly determines sequence information corresponding to the at least one candidate time-frequency resource, the UE does not know the coarse position of each candidate time-frequency resource, especially in the frequency domain. Position, therefore, there is a problem that the time-consuming resource is relatively long and the efficiency is low. The coarse position of the candidate time-frequency resource can be determined by the high-layer signaling. Therefore, further, in order to reduce the acquisition of at least one candidate time-frequency resource and determine at least one The time consumed by the sequence information corresponding to the candidate time-frequency resource is increased, and the UE can detect the synchronization channel to obtain the synchronization sequence, and obtain at least one candidate time-frequency resource according to the synchronization sequence and/or the time-frequency resource location where the synchronization sequence is located. The frequency position is specifically: after detecting the synchronization channel to obtain the synchronization sequence, the UE can obtain the central frequency band position and the rough timing information of the currently detected carrier, and then acquire the time-frequency position of the at least one candidate time-frequency resource according to the timing information.

The UE may further determine the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or, according to the obtained synchronization sequence, determine channel estimation information of the candidate scrambling code and/or the candidate orthogonal code. If the candidate time-frequency resource includes N time-frequency sub-resources, the UE determines the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence. And identifying, according to the obtained synchronization information, the detected actual scrambling code sequence corresponding to each time-frequency sub-resource.

 Referring to FIG. 4, in the embodiment of the present invention, the detailed process of information transmission is as follows:

 Embodiment 2:

 Step 400: Acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group;

 Step 410: Determine an actual time-frequency resource from the at least one candidate time-frequency resource, determine an actual scrambling code from the at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and the at least one candidate orthogonal code sequence group. Sequence and actual orthogonal code sequence;

 Step 420: Send the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE on the actual time-frequency resource, so that the UE determines the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence.

 In the embodiment of the present invention, in the step 400, the type of the candidate time-frequency resource that is acquired by the base station is multiple. Preferably, the candidate time-frequency resource is at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency The resource is an OFDM symbol in which at least two SSSs are located.

 When the candidate time-frequency resource is at least one CSI-RS of the first antenna port, the CSI-RS resource of the first antenna port has the most resource unit of the CSI-RS resource, and therefore, the candidate time-frequency resource is preferably At least one 8-antenna port CSI-RS resource of an antenna port. In practical applications, different cells can select different 8-antenna port CSI-RS resources, so that reference signals of different cells can achieve interference coordination, enhance the detection performance of reference signals, and can also reuse existing CSI-RS. Resource location, simplified system design and implementation complexity.

 The foregoing is only a preferred embodiment of the candidate time-frequency resource type. In practical applications, the candidate time-frequency resource is a CSI-RS resource that can also be another antenna port (such as a 4-antenna port or a smaller number of antenna ports). It can also be an OFDM symbol in which at least two SSSs are located.

In the embodiment of the present invention, in step 400, the at least one candidate time-frequency resource acquired by the base station may be different time-frequency resources in one subframe, for example, different 8-antenna ports CSI-RS in one subframe. The source may also be a time-frequency resource in different subframes, for example, an 8-antenna port CSI-RS resource of subframe 1 and an 8-antenna port CSI-RS resource of subframe 2.

 In the embodiment of the present invention, in step 400, the method for the at least one candidate time-frequency resource to be used by the base station is different. For example, at least one candidate time-frequency resource may be pre-stored in the base station.

 For the same reason, in step 400, the base station determines the sequence information corresponding to the at least one candidate time-frequency resource. For example, the sequence information corresponding to the at least one candidate time-frequency resource is pre-stored in the base station.

 In the embodiment of the present invention, there are multiple types of candidate scrambling code sequences, preferably a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence, or an initialization parameter in an initialization sequence, where the candidate scrambling code sequence is When the pseudo-random sequence is used, it may be an M sequence or a Gold sequence.

 For example, when the Gold sequence is as shown in the above-mentioned formula 1, the candidate scrambling code sequence may be Equation 1, or may be an initialization sequence of the Gold sequence, that is, Equation 2 mentioned above, and may also be initialization in the initialization sequence. The parameter, which is N.

 In the embodiment of the present invention, there are also multiple types of candidate orthogonal code sequence groups. Preferably, the candidate orthogonal code sequence group is a Walsh sequence group.

 For example, the Walsh sequence group is a binary sequence group, and the two orthogonal code sequences are respectively {1, 1} and {1, -1}, and the candidate orthogonal code sequence group is ({1, 1}, { 1, -1} ); The Walsh sequence group is a quaternion sequence group, and the four orthogonal code sequences included are {1, 1, 1, 1}, {1, 1, -1, -1}, { 1, -1, 1, -1} and {1, -1, -1, 1}, the candidate orthogonal code sequence group is ({1, 1, 1, 1}, {1, 1, -1, - 1}, {1, -1, 1, -1} and {1, -1, -1, 1}).

 In the embodiment of the present invention, the Walsh sequence group may be a binary code group, a quaternary code group, or an octal code group, where any two Walsh sequence groups may be sequence groups of the same dimension, or For a sequence group of different dimensions, for example, a Walsh sequence group corresponding to one candidate time-frequency resource is a binary code group, and a Walsh sequence group corresponding to another candidate time-frequency resource is a quaternion code group.

Since each candidate time-frequency resource corresponds to sequence information, and the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group, each candidate time-frequency resource carries at least one candidate scrambling code sequence and At least one candidate orthogonal code sequence group, in the embodiment of the present invention, The candidate time-frequency resource carries the candidate scrambling code sequence and the candidate orthogonal code sequence group in multiple manners. Preferably, the actual scrambling code sequence is generated in the frequency domain direction of the actual time-frequency resource; The domain is an OFDM symbol, and a scrambling code sequence is first generated on a plurality of resource blocks including the OFDM symbol, and then the scrambling code sequence on the OFDM subcarrier of each resource unit is subjected to orthogonal code spreading in the time domain direction.

 For example, for a certain OFDM symbol, a 4 sigma sequence is first generated on a plurality of resource blocks including the OFDM symbol, for example, a central 6 resource blocks on one OFDM symbol or all resource blocks on the carrier are generated. The code sequence is then subjected to orthogonal code spreading in the time domain direction for the scrambling code sequence. In this embodiment, if there are 100 resource blocks including the OFDM symbol (wherein each of the 100 resource blocks has one resource unit for carrying the scrambling code), the frequency domain scrambling sequence The length is 100, and then, for each of the 100 resource elements carrying the scrambling code sequence, the orthogonal sequence code is used for time domain spreading, and if the orthogonal sequence code is a binary orthogonal sequence The code, then the result of the spreading, is that the above scrambling code sequence can occupy two OFDM symbols in the time domain.

 The above embodiment is only a preferred embodiment. In practical applications, there are various methods, which are not repeated here.

 In the embodiment of the present invention, in step 420, there are multiple ways for the UE to determine the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence. Preferably, the UE is configured according to the actual scrambling sequence and the actual orthogonal code. The sequence determines the cell identifier; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence, and the actual scrambling code sequence and the actual time-frequency resources occupied by the actual orthogonal code sequence.

For example, the two actual time-frequency resources obtained are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the second actual The actual scrambling sequence carried on the time-frequency resource is 2 and 3. The actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ({1, -1}), { 1, 1}), the base station makes the UE determine the maximum number of cell identifiers, which are: (0+{1, 1}), (0+{1, -1}), (1+{1, 1 } ) , (1+{1, -1} ) , ( 2+{1, 1} ) , ( 2+{1, -1} ) , (3+{1, 1} ) , (3+{1 , -1} ) .

 For example, the two actual time-frequency resources obtained are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the second actual The actual scrambling sequence carried on the time-frequency resource is 0 and 1, and the actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ({1, -1}), { 1 , 1} ) , the base station determines that the cell identifier determined by the UE is at most eight, specifically: (the first actual time-frequency resource +0+{1 , 1} ), (the first actual time-frequency resource +0+{ 1 , -1} ) , (first actual time-frequency resource +1+{1 , 1} ), (first actual time-frequency resource +1+{1 , -1} ), (second actual time-frequency resource + 0+{1 , 1} ) , (second actual time-frequency resource +0+{1 , -1} ), (second actual time-frequency resource +1+{1 , 1} ), (second actual time-frequency) Resource +1+{1 , -1} ).

 The cells that are orthogonal to any two orthogonal code sequences are orthogonal, and any two orthogonal code sequences are the same but the cells with different scrambling sequences are pseudo-orthogonal. In the embodiment of the present invention, The cross-design design reduces the interference between cells, and the pseudo-orthogonalization design improves the multiplexing rate of time-frequency resources while providing a certain number of cell identifiers.

 For example, if several neighboring cells form a cell cluster 1 and several other neighboring cells form a cell cluster 2, the orthogonalization design can be used between the cells included in the cell cluster 1 to reduce the cell cluster. 1 Interference between the included cells, the orthogonal design includes multiple orthogonal sequence codes in one orthogonal sequence code group, or different candidate time-frequency resources may be used if the number of orthogonal sequence codes is insufficient. The orthogonal sequence code design is performed; the pseudo-orthogonalization design can be adopted between the cells included in the cell cluster 2, and the multiplexing rate of the time-frequency resources is improved when a certain number of cell identifiers are provided.

 Further, in the embodiment of the present invention, the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource is respectively associated with at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource. Correspondingly, where N is an integer greater than one.

For example, a candidate time-frequency resource is an 8-antenna port CSI-RS resource, and an 8-antenna port CSI-RS resource includes four time-frequency sub-resources, and the time-frequency sub-resources are frequency-divided, as shown in FIG. A and B, A includes two time-frequency sub-resources: A1 time-frequency sub-resource and A2 time-frequency sub-resource (as shown in FIG. 1B), and B includes two time-frequency sub-resources: B1 time-frequency sub-resource and B2 time-frequency sub-resources (as shown in Figure 1C). In the embodiment of the present invention, if the candidate time-frequency resource includes N time-frequency sub-resources, the base station separately generates a corresponding time-frequency sub-resource in the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource. The actual scrambling sequence; in the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, the actual scrambling code sequence corresponding to each time-frequency sub-resource is generated, and each time-frequency sub-resource is used. The corresponding actual orthogonal code sequences are separately spread.

 Similarly, if the candidate time-frequency resource includes N time-frequency sub-resources, the base station sends the actual scrambling code sequence and the actual orthogonal code sequence to the UE on the actual time-frequency resource, each time in the actual time-frequency resource. According to the correspondence between the time-frequency sub-resource and the actual orthogonal code sequence group, the base station makes the UE at least according to the corresponding relationship between the time-frequency sub-resource and the actual orthogonal code sequence group. When the actual scrambling code sequence and the actual orthogonal code sequence determine the cell identifier, the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or And the actual time-frequency resource occupied by the UE according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual orthogonal code sequence. Determine the cell identity.

 In order to improve the accuracy of determining the actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group, and reducing the complexity, the number of time-frequency sub-resources included in the candidate time-frequency resource can be reduced, and the positive limit is simultaneously limited. The number of cross-code sequence groups.

Further, in order to reduce the interference between the cells corresponding to the determined cell identifiers, and to improve the multiplexing rate of the time-frequency resources and provide more cell identifiers, in the embodiment of the present invention, the candidate time-frequency resources include the first time-frequency sub-carrier. a resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the time-frequency included in the first time-frequency sub-resource group The candidate orthogonal code sequences corresponding to the sub-resources are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal, in the above case, The candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and the interference between the cells can be reduced, by using the time-frequency sub-resources included in the second time-frequency sub-resource group Corresponding The candidate orthogonal code sequences are identical or pseudo-orthogonal, which can improve the multiplexing rate of time-frequency resources and provide more cell identification.

 For example, one candidate time-frequency resource C shown in FIG. 3A is divided into two time-frequency sub-resources, and each time-frequency sub-resource has two orthogonal code sequences, and a total of four kinds of sequence information are provided, as shown in FIG. 3B. The possible orthogonal sequence codes respectively provided by the AP ID 0 and the AP ID 3 are orthogonal, that is, the two orthogonal code sequences corresponding to the first time-frequency sub-resource are the same, and the second time-frequency sub- The two orthogonal code sequences corresponding to the resource are also the same; the possible orthogonal sequence codes provided by AP ID 0 and AP ID1 are not completely orthogonal, that is, the two orthogonal frequencies corresponding to the first time-frequency sub-resource The sequence is the same. The two orthogonal sequences corresponding to the second time-frequency sub-resource are orthogonal. In this case, the scrambling code sequence corresponding to the candidate time-frequency sub-resource may be the same or pseudo-orthogonal. If the scrambling code sequence is pseudo-orthogonal, the reference signals corresponding to different cells are pseudo-orthogonal even if the orthogonal code sequences are the same. Since the possible orthogonal sequence codes respectively provided by AP ID 0 and AP ID1 are not completely orthogonal, the candidate time-frequency resources combined by the above-mentioned time-frequency sub-resources are partially orthogonal to each other, compared to completely orthogonalization. The design (AP ID 0 and AP ID 3) can improve the bearer efficiency of the cell identity. In the actual application, the combination of the restricted codewords can improve the bearer efficiency of the cell identity, which is not described here.

In the embodiment of the present invention, the first set of time-frequency sub-resources includes all or one of the CSI-RS resources of the at least two second antenna ports, in order to avoid the false alarm problem of the cell detection corresponding to the cell identifier. In part, the second set of time-frequency sub-resources includes all or part of each of the CSI-RS resources of the at least two second antenna ports. Each time-frequency sub-resource corresponds to a set of binary orthogonal code sequences, and the sequence information corresponding to the candidate time-frequency resource C coexists with the CSI-RS of the 4-antenna port, as shown in FIG. 3B, and The sequence information corresponding to the candidate time-frequency resource D coexists with the CSI-RS of the 4-antenna port without blurring, as shown in FIG. 3C. For the division of the first group of time-frequency sub-resources and the second group of time-frequency sub-resources, FIG. 3B is divided according to the 4-antenna port CSI-RS resources, that is, each group of time-frequency sub-resources includes only one complete 4-antenna port. Each part of the CSI-RS 4 antenna port CSI-RS resources. For the case shown in Figure 3B, if there is only one small The area sends the PCIO identifier, that is, the sequence information corresponding to the AP ID 0, and the cell also sends a CSI-RS resource (AP ID 2) of the 4-antenna port, when the UE detects the obtained cell corresponding to the AP ID 0. The obtained AP ID 2 cell is also detected. Therefore, in the case of FIG. 3A, a false alarm problem of the cell detection corresponding to the cell identifier may occur; for the case shown in FIG. 3C, the 4 antenna port CSI-RS resource is configured. When the first group of time-frequency sub-resources and the second group of time-frequency sub-resources are divided, the occurrence of the orthogonal code sequence combination is avoided, and the false alarm problem of the cell detection corresponding to the cell identifier is avoided. In the above embodiment, the second antenna port is 4 ports.

 Further, in order to maintain a certain cell identity bearer efficiency and improve the multiplexing rate of the time-frequency resource, in the embodiment of the present invention, at least two candidate time-frequency resources partially overlap each other; and/or at least two time-frequency sub-resources Partially overlapping each other.

 For example, a candidate time-frequency resource is an 8-antenna port CSI-RS resource is divided into four time-frequency sub-resources, and the specific positions of the four time-frequency sub-resources in the frequency domain are: {0, 1}, {1, 2}, {2, 3} and {3, 0}, the frequency domain position mentioned above represents the position label of the resource unit in the frequency domain direction of the 8-antenna port CSI-RS resource, as can be seen from the above, One time-frequency sub-resource partially overlaps with the second time-frequency sub-resource, the second time-frequency sub-resource partially overlaps with the third-time-frequency sub-resource, and the third-time-frequency sub-resource partially overlaps with the fourth-time-frequency sub-resource.

 In the embodiment of the present invention, if the UE determines the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, the actual scrambling code sequence and the actual orthogonal code sequence part sequence information bear the cell identifier, and some part of the sequence information does not carry the d And the area identifier, the UE further determines the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and One or any combination of duplex types.

For example, the configuration information is an active/sleep state of the corresponding cell, and may be specifically indicated by an orthogonal code sequence in the orthogonal code sequence group in the sequence information, for example, the orthogonal code sequence {1, 1} is the activation of the corresponding cell. The status indication, the orthogonal code sequence {1, -1} is the dormant status indication of the corresponding cell; or may be indicated by a different scrambling code sequence, for example, the scrambling code sequence 0 is an activation status indication of the corresponding cell, and the scrambling code sequence 1 The sleep state indication of the corresponding cell may also be indicated by the candidate time-frequency resource location. The base station enables the UE to determine the configuration information of the d and the area corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence. If the information is the switch of the corresponding cell, the UE can timely discover that the base station is about to be closed, and reselect the other as soon as possible. The opened cell or base station maintains mobility performance. At the same time, the power used to turn off the cell transmission sequence information can also be reduced when calculating the RSSI to ensure the accuracy of the RSRQ measurement. The above is an example in which the configuration information is a switch of the corresponding cell. In an actual application, the configuration information may also indicate other information, such as an activation/sleep state, a transmission power level, a carrier type, or a duplex type, and the indication manner is similar to the foregoing. , no longer here - detailed.

 When the base station is in an active state, data can be normally transmitted, for example, a synchronization signal, a broadcast signal, a unicast signal for scheduling, and a reference signal; when the base station is in a dormant state, the base station cannot normally transmit data, but only transmits The longer period reference signal is used by the UE to discover and measure the cell. The carrier type is divided into a backward compatible carrier type and a new carrier type. The new carrier type can be classified into a new carrier type that can be independently accessed and a new carrier type that cannot be independently accessed, and cannot be used for a lower version of the UE. In.

 In an actual application, if the UE directly acquires at least one candidate time-frequency resource and directly determines sequence information corresponding to the at least one candidate time-frequency resource, the UE does not know the coarse position of each candidate time-frequency resource, especially in the frequency domain. Position, therefore, there is a problem that the time-consuming resource is relatively long and the efficiency is low. The coarse position of the candidate time-frequency resource can be determined by the high-layer signaling. Therefore, further, in order to reduce the acquisition of at least one candidate time-frequency resource and determine at least one The time consumed by the sequence information corresponding to the candidate time-frequency resource is increased, and the UE can detect the synchronization channel to obtain the synchronization sequence, and obtain at least one candidate time-frequency resource according to the synchronization sequence and/or the time-frequency resource location where the synchronization sequence is located. The frequency position is specifically: after detecting the synchronization channel to obtain the synchronization sequence, the UE can obtain the central frequency band position and the rough timing information of the currently detected carrier, and then acquire the time-frequency position of the at least one candidate time-frequency resource according to the timing information.

The base station may further enable the UE to determine the cell identifier according to the received synchronization information, the received actual scrambling code sequence, and the actual orthogonal code sequence. Alternatively, the base station enables the UE to determine the candidate scrambling code and/or the candidate according to the received synchronization sequence. The channel estimation information of the orthogonal code, where the candidate time-frequency resource includes N time-frequency sub-resources, the base station causes the UE to according to the received synchronization information, the actual scrambling code sequence, and the actual orthogonal code. The sequence determines the cell identity, and the base station causes the UE to determine the cell identity according to the received synchronization information and each time-frequency sub-resource orthogonal code sequence.

 As shown in FIG. 5, the UE provided by the embodiment of the present invention includes: a first determining unit 500, configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes At least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; the detecting unit 510, configured to detect, on the at least one candidate time-frequency resource, the candidate scrambling code included in the determined sequence information corresponding to the at least one candidate time-frequency resource The sequence and the candidate orthogonal code sequence group obtain the actual orthogonal code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group; the second determining unit 520 is configured to use at least the detected actual scrambling code sequence and the actual orthogonal sequence The code sequence determines the cell identity.

 Preferably, the candidate time-frequency resource acquired by the first determining unit 500 is at least one channel state information reference signal CSI-RS resource of the first antenna port; or the candidate time-frequency resource acquired by the first determining unit 500 is at least two. The orthogonal frequency division multiplexing OFDM symbol in which the secondary synchronization signal SSS is located.

 Preferably, the at least one candidate time-frequency resource acquired by the first determining unit 500 is a different time-frequency resource in one subframe; or the at least one candidate time-frequency resource acquired by the first determining unit 500 is in a different subframe. Frequency resources.

 Preferably, the obtaining, by the first determining unit 500, the at least one candidate time-frequency resource, the method includes: storing at least one candidate time-frequency resource in advance; or acquiring at least one candidate time-frequency resource according to the signaling sent by the received base station.

 Similarly, the determining, by the first determining unit 500, the sequence information corresponding to the at least one candidate time-frequency resource includes: pre-storing sequence information corresponding to the at least one candidate time-frequency resource; or acquiring according to the received signaling sent by the base station. Sequence information corresponding to at least one candidate time-frequency resource.

 Preferably, the candidate scrambling code sequence determined by the first determining unit 500 is a pseudo random sequence or an initialization sequence of the pseudo random sequence; the candidate orthogonal code sequence group determined by the first determining unit 500 is a Walsh Walsh sequence group.

In the embodiment of the present invention, the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information determined by the first determining unit 500, the candidate scrambling code sequence is a candidate time-frequency corresponding to the sequence information. The sequence generated in the frequency domain direction of the source; the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of the candidate time-frequency resource.

 Preferably, the detecting unit 510 is specifically configured to: determine a scrambling code sequence sent by the base station and a orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and sequence information corresponding to the candidate time-frequency resource respectively When the candidate candidate scrambling code sequence and the candidate orthogonal code sequence in the candidate orthogonal code sequence group are matched, the matched candidate scrambling code sequence and the candidate orthogonal code sequence are used as the actual scrambling code sequence and the actual orthogonal code sequence. .

 And determining, by the determining unit, the cell identifier, determining the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or, according to the detected actual scrambling code sequence, the actual orthogonal code sequence, and the actual scrambling sequence And determining the cell identity by the actual time-frequency resource occupied by the actual orthogonal code sequence.

 Further, the candidate time-frequency resource determined by the first determining unit 500 includes N time-frequency sub-resources, and each time-frequency sub-resource includes at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource. Correspondingly, where N is an integer greater than 35.

 Preferably, the candidate scrambling code sequence determined by the first determining unit 500 is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information; the candidate determined by the first determining unit 500 The candidate orthogonal code sequence in the orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information.

Preferably, the detecting unit 510 is configured to: detect, on each time-frequency sub-resource of the candidate time-frequency resource, a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, to obtain an actual scrambling code sequence, And detecting, according to the correspondence between the time-frequency sub-resource and the candidate orthogonal code sequence group, the corresponding candidate orthogonal code sequence group is obtained on each time-frequency sub-resource of the candidate time-frequency resource, and obtaining each time-frequency sub-sense is better. The determining unit is specifically configured to: determine the cell identifier according to the actually detected corresponding time-frequency sub-resource; or, according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, The actual time-frequency resource occupied by the sequence and the actual orthogonal code sequence determines the cell identity.

 Further, the candidate time-frequency resource acquired by the first determining unit 500 includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include At least one time-frequency sub-resource, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and the time-frequency sub-resources included in the second time-frequency sub-resource group correspond to The candidate orthogonal code sequences are identical or pseudo-orthogonal.

 Preferably, the first set of time-frequency sub-resources includes all or part of each CSI-RS resource of the at least two second antenna ports, and the second set of time-frequency sub-resources includes at least two second All or part of each CSI-RS resource in the CSI-RS resource of the antenna port.

 Preferably, at least two candidate time-frequency resources acquired by the first determining unit 500 partially overlap each other; and/or, at least two time-frequency sub-resources partially overlap each other.

 Further, the communication unit 530 is further configured to: use the actual scrambling code sequence and the CSI-RS sent on the time-frequency sub-resource on the actual time-frequency resource occupied by the actual orthogonal code sequence group. One or any combination of channel state information measurement, synchronization, and radio resource management RRM measurements.

 Further, the determining unit is specifically configured to: determine, according to the detected actual scrambling code sequence and the actual orthogonal code sequence, configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, and a transmit power of the corresponding cell. One or any combination of rank, carrier type, and duplex type.

 Further, the acquiring unit is further configured to: detect a synchronization channel to obtain a synchronization sequence; acquire a time-frequency location of the at least one candidate time-frequency resource according to the synchronization frequency sequence and/or a time-frequency resource location where the synchronization sequence is located; or, according to the obtained synchronization information And detecting the actual scrambling code sequence and the actual orthogonal code sequence to determine the cell identifier; or determining channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.

As shown in FIG. 6, the base station provided by the embodiment of the present invention includes: a first acquiring unit 600, configured to acquire at least one candidate time-frequency resource, and determine a sequence letter corresponding to at least one candidate time-frequency resource, respectively. The sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group. The second obtaining unit 610 is configured to determine an actual time-frequency from the at least one candidate time-frequency resource acquired by the first acquiring unit 600. The resource, the sequence signal corresponding to the actual time-frequency resource, the packet, the at least one candidate scrambling code sequence included, and the at least one candidate orthogonal code sequence group respectively determine an actual scrambling code sequence and an actual orthogonal code sequence; the sending unit 620, For transmitting, on the actual time-frequency resource determined by the second acquiring unit 610, the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquiring unit 610 to the user equipment UE, so that the UE is at least according to the actual scrambling code sequence and the actual positive The cross code sequence determines the cell identity.

 Preferably, the candidate time-frequency resource acquired by the first acquiring unit 600 is at least one channel state information reference signal CSI-RS resource of the first antenna port; or the candidate time-frequency resource acquired by the first acquiring unit 600 is at least two. The orthogonal frequency division multiplexing OFDM symbol in which the secondary synchronization signal SSS is located.

 Preferably, the at least one candidate time-frequency resource acquired by the first acquiring unit 600 is a different time-frequency resource in one subframe; or the at least one candidate time-frequency resource acquired by the first acquiring unit 600 is in a different subframe. Frequency resources.

 Preferably, the candidate scrambling code sequence determined by the first obtaining unit 600 is a pseudo random sequence or an initialization sequence of the pseudo random sequence; the candidate orthogonal code sequence group determined by the first acquiring unit 600 is a Walsh Walsh sequence group.

 The actual 4th code sequence is generated in the frequency domain direction of the actual time-frequency resource for the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquiring unit 610. The time domain domain invention on the actual time-frequency resource In an embodiment, when the sending unit 620 determines the cell identifier, the UE determines the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE is in the actual 4 code sequence, the actual orthogonal code sequence, and the actual The actual time-frequency resource occupied by the scrambling code sequence and the actual orthogonal code sequence determines the cell identifier i.

 Further, the candidate time-frequency resource acquired by the first acquiring unit 600 includes N time-frequency sub-resources, and each of the time-frequency sub-resources includes at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource. Correspondingly, where N is an integer greater than one.

Preferably, the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource is separately generated. An actual scrambling code sequence corresponding to each time-frequency sub-resource; in the time-domain direction of each time-frequency sub-resource in the actual time-frequency resource, the actual scrambling code sequence corresponding to each time-frequency sub-resource is generated, For each of the preferred ones, the sending unit 620 is specifically configured to: send an actual scrambling code sequence corresponding to the actual time-frequency resource to the UE on each time-frequency sub-resource in the actual time-frequency resource, and in the actual time-frequency resource. of

Preferably, the sending unit 620 is specifically configured to: enable the UE to determine a cell identifier according to an actual scrambling code sequence corresponding to each time-frequency sub-resource and an actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, The actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence, determining the cell identifier i only.

 Further, the candidate time-frequency resource acquired by the first acquiring unit 600 includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include At least one time-frequency sub-resource, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and the time-frequency sub-resources included in the second time-frequency sub-resource group correspond to The candidate orthogonal code sequences are identical or pseudo-orthogonal.

 Preferably, the first set of time-frequency sub-resources includes all or part of each CSI-RS resource of the at least two second antenna ports, and the second set of time-frequency sub-resources includes at least two second All or part of each CSI-RS resource in the CSI-RS resource of the antenna port.

 Preferably, at least two candidate time-frequency resources acquired by the first acquiring unit 600 partially overlap each other; and/or, at least two time-frequency sub-resources acquired by the first acquiring unit 600 partially overlap each other.

 Further, the sending unit 620 is further configured to: determine, by the UE, the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes a switch, an active/sleep state, and a sending power level of the corresponding cell. One or any combination of carrier type and duplex type.

Further, the first obtaining unit 600 is further configured to: send a synchronization sequence on the synchronization channel; and enable the UE to acquire at least one candidate time-frequency according to the synchronization frequency sequence and/or the time-frequency resource location where the synchronization sequence is located. The time-frequency position of the source; or, the UE determines the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or, the UE determines the candidate scrambling code according to the obtained synchronization sequence and/or Or channel estimation information of candidate orthogonal codes.

In summary, in the embodiment of the present invention, a method for information detection and transmission is provided, where an information detection method is: acquiring at least one candidate time-frequency resource, and respectively determining at least one candidate time-frequency resource corresponding to Sequence information, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; detecting candidate included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource a scrambling code sequence and a candidate orthogonal code sequence group, obtaining an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group; determining the cell identity according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence, In this way, since each candidate time-frequency resource can be any position of the carrier center, or even within 6 resource blocks of the carrier center, the probability of any two candidate time-frequency resources overlapping is small, and then any two The interference between the signals transmitted on the candidate time-frequency resources is small, so the UE detects the actual scrambling code. The interference between the column and the actual orthogonal code sequence shortens the time required for the UE to determine the cell identity, improves the efficiency of determining the cell identity, and determines the accuracy of the cell identity. At the same time, the cell identity is actually detected. The scrambling code sequence and the orthogonal code sequence are determined, and both the scrambling code sequence and the orthogonal code sequence can reduce interference, and therefore, further solving the problem that when the UE determines the cell identity in the heterogeneous network, it takes a long time The method of sending information is: obtaining at least one candidate time-frequency resource, and determining sequence information corresponding to at least one candidate time-frequency resource, wherein the sequence information includes at least one candidate a scrambling code sequence and at least one candidate orthogonal code sequence group; determining an actual time-frequency resource from the at least one candidate time-frequency resource, at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and at least one candidate positive The actual · ί y code sequence and the actual orthogonal code sequence are respectively determined in the code sequence group; on the actual time-frequency resource Sending the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE, so that the UE determines the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence, so that each candidate time-frequency resource can be any position of the carrier center. , even if it is not limited to 6 resource blocks in the carrier center, if any two candidate time-frequency resources are less likely to overlap, the signal sent on any two candidate time-frequency resources The interference between the numbers is small. Therefore, the interference when the base station transmits the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required for the UE to determine the cell identity is shortened, the efficiency of determining the cell identity is improved, and the determination is determined. The accuracy of the cell identity is determined. At the same time, the cell identity is determined by the actual scrambling code sequence and the actual orthogonal code sequence transmitted, and the scrambling code sequence and the orthogonal code sequence can reduce interference, and therefore, the solution is further solved. In a heterogeneous network, when the UE determines the cell identity, the problem is that the time is long, the efficiency is low, and the accuracy is poor.

 Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

 The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

 The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

 These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although a preferred embodiment of the invention has been described, one of ordinary skill in the art will recognize Additional changes and modifications to these embodiments can be made in the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request 1. An information detection method, characterized by including: Obtain at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, wherein the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; Detect the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource, and obtain the actual scrambling code sequence and the actual orthogonal code sequence group The actual orthogonal code sequence in the code sequence group; The cell identity is determined at least based on the detected actual scrambling code sequence and the actual orthogonal code sequence. 2. The method of claim 1, wherein the candidate time-frequency resource is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is at least two The orthogonal frequency division multiplexing OFDM symbol where the secondary synchronization signal SSS is located. 3. The method according to claim 1 or 2, characterized in that: the at least one candidate time-frequency resource is a different time-frequency resource within a subframe; or, the at least one candidate time-frequency resource is a different subframe time-frequency resources within. 4. The method according to any one of claims 1 to 3, characterized in that obtaining at least one candidate time-frequency resource specifically includes: Pre-store the at least one candidate time-frequency resource; or, The at least one candidate time-frequency resource is obtained according to the received signaling sent by the base station. 5. The method according to any one of claims 1 to 4, characterized in that determining the sequence information corresponding to the at least one candidate time-frequency resource specifically includes: Pre-store sequence information corresponding to the at least one candidate time-frequency resource; or, Obtain sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station. 6. The method according to any one of claims 1 to 5, characterized in that, the candidate scrambling code sequence is a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence; the candidate orthogonal code sequence group is a Walsh sequence group. 7. The method according to any one of claims 1 to 6, characterized in that, for the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information, the candidate scrambling code sequence is, in the A sequence generated in the frequency domain direction of the candidate time-frequency resource corresponding to the sequence information; The candidate orthogonal code sequence in the candidate orthogonal code sequence group is a candidate scrambler generated in the time domain direction of the candidate time-frequency resource. A sequence generated by spreading the code sequence. 8. The method according to any one of claims 1 to 7, characterized in that, on the at least one candidate time-frequency resource, the candidate included in the determined sequence information corresponding to the at least one candidate time-frequency resource is detected. The scrambling code sequence and the candidate orthogonal code sequence group are used to obtain the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group, specifically including: Determine the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, respectively, and the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource. When matching the candidate orthogonal code sequence in the candidate orthogonal code sequence group, the matched candidate scrambling code sequence and candidate orthogonal code sequence are regarded as the actual scrambling code sequence and the actual orthogonal code sequence. 9. The method according to any one of claims 1 to 8, characterized in that, determining the cell identity based on at least the detected actual scrambling code sequence and the actual orthogonal code sequence, specifically includes: Determine the cell identity according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or, The cell identity is determined based on the detected actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence. 10. The method according to any one of claims 1 to 9, further comprising: The candidate time-frequency resources include N time-frequency sub-resources, and each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is greater than an integer of 1. 11. The method of claim 10, wherein the candidate scrambling code sequence is generated in the frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information. Sequence; The candidate orthogonal code sequence in the candidate orthogonal code sequence group is: in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information, the generated candidate scrambling code sequence is Spread spectrum generated sequence. 12. The method according to claim 10 or 11, characterized in that, the candidate scrambling code sequence and the candidate orthogonal code included in the determined sequence information corresponding to the candidate time-frequency resource are detected on the candidate time-frequency resource. Sequence group, obtain the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group, specifically including: On each time-frequency sub-resource of the candidate time-frequency resource, detect the candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, obtain the actual scrambling code sequence, and obtain the actual scrambling code sequence in each time-frequency resource of the candidate time-frequency resource. On the sub-resources, according to the corresponding relationship between the time-frequency sub-resource and the candidate orthogonal code sequence group, the corresponding candidate orthogonal code sequence group is detected, and the actual orthogonal code sequence group corresponding to each time-frequency sub-resource is obtained. code sequence. 13. The method of claim 12, wherein determining the cell identity is based on at least the detected actual scrambling code sequence and the actual orthogonal code sequence, specifically including: According to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, and each time, The cell identity is determined based on the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual time-frequency resource occupied by each time frequency and the actual orthogonal code sequence. 14. The method according to any one of claims 10 to 13, wherein the candidate time-frequency resources include a first time-frequency sub-resource group and a second time-frequency sub-resource group, wherein the first time-frequency sub-resource group The frequency sub-resource group and the second time-frequency sub-resource group each include at least one time-frequency sub-resource, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are exactly the same. Intersection, the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are the same or pseudo-orthogonal. 15. The method of claim 14, wherein the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports. The second group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports. 16. The method according to any one of claims 10 to 15, wherein at least two of the candidate time-frequency resources partially overlap with each other; and/or, at least two of the time-frequency sub-resources partially overlap with each other. 17. The method according to any one of claims 2 to 16, further comprising: utilizing the actual time-frequency resources occupied by the actual XY code sequence and the actual orthogonal code sequence group. The CSI-RS sent on the time-frequency sub-resource performs one or any combination of channel state information measurement, synchronization and radio resource management RRM measurement. 18. The method according to any one of claims 1 to 17, further comprising: determining, according to the detected actual scrambling code sequence and the actual orthogonal code sequence, the cell corresponding to the cell identifier. Configuration information, wherein the configuration information includes one or any combination of the switch, activation/sleep state, transmit power level, carrier type and duplex type of the corresponding cell. 19. The method according to any one of claims 1 to 18, further comprising: detecting a synchronization channel to obtain a synchronization sequence; obtaining the time-frequency position of one candidate time-frequency resource; or, based on the obtained synchronization information , determine the cell identity based on the detected actual scrambling code sequence and the actual orthogonal code sequence; or, determine the channel of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence. Estimate information. 20. A method of sending information, characterized by including: Obtain at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, wherein the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; The actual time-frequency resource is determined from the at least one candidate time-frequency resource, and the actual scrambling code sequence is determined from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in the sequence information corresponding to the actual time-frequency resource. code sequence and actual orthogonal code sequence; On the actual time-frequency resource, send the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE, so that the UE at least determines the actual scrambling code sequence and the actual orthogonal code sequence based on the actual scrambling code sequence and the actual orthogonal code sequence. Determine the community ID. 21. The method of claim 20, wherein the candidate time-frequency resource is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is at least two The orthogonal frequency division multiplexing OFDM symbol where the secondary synchronization signal SSS is located. 22. The method according to claim 20 or 21, characterized in that: the at least one candidate time-frequency resource is a different time-frequency resource within a subframe; or, the at least one candidate time-frequency resource is a different subframe time-frequency resources within. 23. The method according to claim 20, 21 or 22, characterized in that the candidate scrambling code sequence is a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence; the candidate orthogonal code sequence group is Vol What is the Walsh sequence group. 24. The method according to any one of claims 20 to 23, characterized in that, for the actual scrambling code sequence and the actual orthogonal code sequence, generating the actual time-frequency resource in the frequency domain direction the actual scrambling code sequence; in the time domain direction on the actual time-frequency resource, the generated actual scrambling code sequence is spread using the actual orthogonal code sequence. 25. The method according to any one of claims 20 to 24, characterized in that, causing the UE to determine the cell identity at least based on the actual scrambling code sequence and the actual orthogonal code sequence, specifically including: Let the UE determine the cell identity based on the actual scrambling code sequence and the actual orthogonal code sequence; or, Let the UE determine the cell identity based on the actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence. 26. The method according to any one of claims 20 to 25, further comprising: the candidate time-frequency resources include N time-frequency sub-resources, each time-frequency sub-resource is respectively related to the candidate time-frequency resource. Corresponds to at least one candidate orthogonal code sequence group included in the corresponding sequence information, where N is an integer greater than 1. 27. The method according to claim 24, characterized in that, in the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource, an actual time-frequency sub-resource corresponding to the each time-frequency sub-resource is generated respectively. Scrambling code sequence; In the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, generate The actual scrambling code sequence corresponding to each time-frequency sub-resource is spread spectrum using the actual orthogonal code sequence corresponding to each time-frequency sub-resource. 28. The method according to claim 27, characterized in that, on the actual time-frequency resource, sending the actual scrambling code sequence and the actual orthogonal code sequence to the UE, specifically including: The actual scrambling code sequence corresponding to the actual time-frequency resource is sent to the UE on each time-frequency sub-resource in the actual time-frequency resource, and each time-frequency sub-resource in the actual time-frequency resource is sent to the UE. Capital 29. The method according to claim 28, characterized in that, causing the UE to determine the cell identity at least based on the actual scrambling code sequence and the actual orthogonal code sequence, specifically including: Let the UE determine the cell identity based on the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, Let the UE determine the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual orthogonal code. The actual time-frequency resources occupied by the sequence determine the cell identity. 30. The method according to any one of claims 26 to 29, wherein the candidate time-frequency resources include a first time-frequency sub-resource group and a second time-frequency sub-resource group, wherein the first time-frequency sub-resource group The frequency sub-resource group and the second time-frequency sub-resource group each include at least one time-frequency sub-resource, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are exactly the same. Intersection, the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are the same or pseudo-orthogonal. 31. The method of claim 30, wherein the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports, The second group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports. 32. The method of claim 30 or 31, wherein at least two of the candidate time-frequency resources partially overlap with each other; and/or, at least two of the time-frequency sub-resources partially overlap with each other. 33. The method according to any one of claims 20 to 32, further comprising: Let the UE determine the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information includes the switch, activation/sleep state, transmission of the corresponding cell One or any combination of power level, carrier type and duplex type. 34. The method according to any one of claims 20 to 33, further comprising: sending a synchronization sequence on a synchronization channel; obtaining the time-frequency position of the at least one candidate time-frequency resource; or, making the The UE determines the cell identity based on the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or, the UE determines the candidate scrambling code based on the obtained synchronization sequence. code and/or channel estimation information of the candidate orthogonal code. 35. A user equipment UE, characterized by: including: A first determination unit, configured to obtain at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, wherein the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; A detection unit configured to detect the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource, and obtain the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group; The second determination unit is configured to determine the cell identity based on at least the detected actual scrambling code sequence and the actual orthogonal code sequence. 36. The UE according to claim 35, wherein the candidate time-frequency resource obtained by the first determining unit is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the first The candidate time-frequency resources acquired by a determining unit are orthogonal frequency division multiplexing OFDM symbols where at least two secondary synchronization signals SSS are located. 37. The UE according to claim 35 or 36, wherein at least one candidate time-frequency resource acquired by the first determining unit is a different time-frequency resource within a subframe; or, the first determining unit The at least one candidate time-frequency resource obtained is a time-frequency resource in different subframes. 38. The UE according to any one of claims 35-7, characterized in that the first determining unit obtains The method of obtaining at least one candidate time-frequency resource specifically includes: storing the at least one candidate time-frequency resource in advance; or obtaining the at least one candidate time-frequency resource according to the received signaling sent by the base station. 39. The UE according to any one of claims 35 to 38, wherein the sequence information obtained by the first determining unit to determine the at least one candidate time-frequency resource specifically includes: pre-stored at least one candidate time-frequency resource. Sequence information corresponding to one candidate time-frequency resource; or, obtaining sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station. 40. The UE according to any one of claims 35 to 39, wherein the candidate scrambling code sequence determined by the first determination unit is a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence; the first The candidate orthogonal code sequence group determined by the determination unit is a Walsh sequence group. 41. The UE according to any one of claims 35 to 40, characterized in that, for the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information determined by the first determining unit, the candidate scrambling code The sequence is a sequence generated in the frequency domain direction of the candidate time-frequency resource corresponding to the sequence information; the candidate orthogonal code sequence in the candidate orthogonal code sequence group is, in the time domain of the candidate time-frequency resource The sequence generated by spreading the generated candidate scrambling code sequence in the direction. 42. The UE according to any one of claims 35 to 41, wherein the detection unit is specifically configured to: determine the scrambling code sequence and orthogonal code sent by the base station received on the candidate time-frequency resource. When the orthogonal code sequences in the sequence group respectively match the candidate scrambling code sequences included in the sequence information corresponding to the candidate time-frequency resources and the candidate orthogonal code sequences in the candidate orthogonal code sequence group, the matched The candidate scrambling code sequence and the candidate orthogonal code sequence serve as the actual scrambling code sequence and the actual orthogonal code sequence. 43. The UE according to any one of claims 35 to 42, wherein the determining unit is specifically configured to: determine a cell identity based on the detected actual scrambling code sequence and the actual orthogonal code sequence. ; Or, determine the cell identity based on the detected actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence. 44. The UE according to any one of claims 35 to 43, wherein the candidate time-frequency resources determined by the first determining unit include N time-frequency sub-resources, and each time-frequency sub-resource is associated with the candidate respectively. corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the time-frequency resource, where, N is an integer greater than 35. 45. The UE according to claim 44, wherein the candidate scrambling code sequence determined by the first determining unit is at the frequency of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information. The sequence generated in the domain direction; The candidate orthogonal code sequence in the candidate orthogonal code sequence group determined by the first determination unit is, at the time of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information. In the domain direction, the generated candidate scrambling code sequence is spread spectrum-generated. 46. The UE according to claim 44 or 45, wherein the detection unit is specifically configured to: on each time-frequency sub-resource of the candidate time-frequency resource, detect sequence information corresponding to the time-frequency sub-resource. The included candidate scrambling code sequence is used to obtain the actual scrambling code sequence, and on each time-frequency sub-resource of the candidate time-frequency resource, the corresponding candidate orthogonal code sequence is detected according to the corresponding relationship between the time-frequency sub-resource and the candidate orthogonal code sequence group. Intersection code sequence group, obtain the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource. 47. The UE according to claim 46, wherein the determining unit is specifically configured to: according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, and each time-frequency sub-resource The cell identity is determined based on the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual time-frequency resource occupied by the actual orthogonal code sequence represented by each time-frequency sub-resource. 48. The UE according to any one of claims 44 to 47, wherein the candidate time-frequency resources obtained by the first determining unit include a first time-frequency sub-resource group and a second time-frequency sub-resource group, wherein , the first time-frequency sub-resource group and the second time-frequency sub-resource group each include at least one time-frequency sub-resource, and the candidate corresponding to the time-frequency sub-resource included in the first time-frequency sub-resource group is The orthogonal code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are the same or pseudo-orthogonal to each other. 49. The UE according to claim 48, wherein the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports, The second group of time-frequency sub-resources includes each of the CSI-RS resources of at least two second antenna ports. All or part of a CSI-RS resource. 50. The UE according to any one of claims 44 to 49, wherein at least two of the candidate time-frequency resources acquired by the first determining unit partially overlap with each other; and/or, at least two of the candidate time-frequency resources acquired by the first determining unit partially overlap with each other; The time-frequency sub-resources partially overlap with each other. 51. The UE according to any one of claims 36 to 50, further comprising a communication unit specifically configured to utilize the actual scrambling code sequence and the actual orthogonal code sequence group occupied by The CSI-RS transmitted on the time-frequency sub-resource on the actual time-frequency resource is used to perform one or any combination of channel state information measurement, synchronization and radio resource management RRM measurement. 52. The UE according to any one of claims 35 to 51, wherein the determining unit is specifically configured to: determine the detected actual scrambling code sequence and the actual orthogonal code sequence. The cell identifier corresponds to the configuration information of the cell, where the configuration information includes one or any combination of the switch, activation/sleep state, transmit power level, carrier type and duplex type of the corresponding cell. 53. The UE according to any one of claims 35 to 52, wherein the obtaining unit is further configured to: detect a synchronization channel to obtain a synchronization sequence; and obtain a synchronization sequence according to the synchronization sequence and/or the time at which the synchronization sequence is located. frequency resource position, obtain the time-frequency position of the at least one candidate time-frequency resource; or, determine the cell identity according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; Alternatively, the channel estimation information of the candidate orthogonal code and/or the candidate orthogonal code is determined based on the obtained synchronization sequence. 54. A base station, characterized by including: A first acquisition unit, configured to acquire at least one candidate time-frequency resource, and respectively determine sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; The second acquisition unit is configured to determine an actual time-frequency resource from at least one candidate time-frequency resource acquired by the first acquisition unit, at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and The actual scrambling code sequence and the actual orthogonal code sequence are respectively determined in at least one candidate orthogonal code sequence group; A sending unit, configured to provide user equipment on the actual time-frequency resources determined by the second acquisition unit. The UE is prepared to send the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquisition unit, so that the UE determines the cell identity at least based on the actual scrambling code sequence and the actual orthogonal code sequence. 55. The base station according to claim 54, wherein the candidate time-frequency resource obtained by the first acquisition unit is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the first acquisition unit The candidate time-frequency resources acquired by an acquisition unit are orthogonal frequency division multiplexing OFDM symbols where at least two secondary synchronization signals SSS are located. 56. The base station according to claim 54 or 55, wherein at least one candidate time-frequency resource acquired by the first acquisition unit is a different time-frequency resource within a subframe; or, the first acquisition unit The at least one candidate time-frequency resource obtained is a time-frequency resource in different subframes. 57. The base station according to claim 54, 55 or 56, wherein the candidate scrambling code sequence determined by the first acquisition unit is a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence; the first acquisition unit The candidate orthogonal code sequence group determined by the unit is the Walsh sequence group. 58. The base station according to any one of claims 54 to 57, characterized in that, for the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquisition unit, between the actual time-frequency resources The actual scrambling code sequence is generated in the frequency domain direction; in the time domain direction on the actual time-frequency resource, for 59. The base station according to any one of claims 54 to 24, characterized in that the sending unit is specifically configured to: enable the UE to determine a cell based on the actual scrambling code sequence and the actual orthogonal code sequence. Identity; Or, let the UE determine the cell identity based on the actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence. . 60. The base station according to any one of claims 54 to 59, wherein the candidate time-frequency resources acquired by the first acquisition unit include N time-frequency sub-resources, and each time-frequency sub-resource is associated with the candidate respectively. Corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the time-frequency resource, where N is an integer greater than 1. 61. The base station according to claim 58, characterized in that, in the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource, an actual time-frequency sub-resource corresponding to the each time-frequency sub-resource is generated respectively. Scrambling code sequence; In the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, for the actual scrambling code sequence generated corresponding to each time-frequency sub-resource, use The actual orthogonal code sequences corresponding to the time-frequency sub-resources are spread separately. 62. The base station according to claim 61, wherein the sending unit is specifically configured to: send the actual time-frequency information to the UE on each time-frequency sub-resource in the actual time-frequency resource. The actual scrambling code sequence corresponding to the resource, and on each time-frequency sub-resource in the actual time-frequency resource, 63. The base station according to claim 62, wherein the sending unit is specifically configured to: enable the UE to scramble code according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and each time-frequency sub-resource. The actual orthogonal code sequence corresponding to the resource determines the cell identity; or, the UE is asked to determine the cell identity according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource. , and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence, determine the cell label i. 64. The base station according to any one of claims 59 to 63, wherein the candidate time-frequency resources acquired by the first acquisition unit include a first time-frequency sub-resource group and a second time-frequency sub-resource group, wherein , the first time-frequency sub-resource group and the second time-frequency sub-resource group each include at least one time-frequency sub-resource, and the candidate corresponding to the time-frequency sub-resource included in the first time-frequency sub-resource group is The orthogonal code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are the same or pseudo-orthogonal to each other. 65. The base station of claim 64, wherein the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports, The second group of time-frequency sub-resources includes all or part of each CSI-RS resource of at least two second antenna ports. 66. The base station according to claim 64 or 65, characterized in that, at least two of the candidate time-frequency resources acquired by the first acquisition unit partially overlap with each other; and/or, At least two of the time-frequency sub-resources partially overlap each other. 67. The base station according to any one of claims 54 to 66, characterized in that the sending unit is further configured to: enable the UE to determine the The cell identifier corresponds to the configuration information of the cell, where the configuration information includes one or any combination of the switch, activation/sleep state, transmit power level, carrier type and duplex type of the corresponding cell. 68. The base station according to any one of claims 54 to 67, characterized in that the first acquisition unit is further configured to: send a synchronization sequence on a synchronization channel; enable the UE to operate according to the synchronization sequence and/or The time-frequency resource position where the synchronization sequence is located is used to obtain the time-frequency position of the at least one candidate time-frequency resource; or, the UE is asked to obtain the time-frequency resource position according to the obtained synchronization information, the detected actual scrambling sequence and the determine the cell identity according to the actual orthogonal code sequence; or, let the UE determine the channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.