WO2013064043A1 - Method for implementing enhanced pdcch and related device - Google Patents

Abstract

Disclosed is a method for implementing an Enhanced Physical Downlink Control Channel (E-PDCCH) and a related device, used for increasing the capacity of a PDCCH system in a conventional LTE system. The method for implementing an enhanced PDCCH comprises: allocating resource allocation indication information to a user equipment (UE), the resource allocation indication information comprising an available Orthogonal Frequency Division Multiplexing (OFDM) symbol value and available frequency resource information of an E-PDCCH used for transmitting control signaling.

Description

 Enhanced PDCCH implementation method and related equipment The application is submitted to the Chinese Patent Office on October 31, 2011, the application number is 201110338031.4, and the invention name is

The priority of the Chinese Patent Application for "Enhanced PDCCH Implementation Method and Related Apparatus" is incorporated herein by reference. The present invention relates to the field of wireless communication technologies, and in particular, to an enhanced PDCCH implementation method and related device. BACKGROUND In a Long Time Evolution (LTE) R8/R9/R10 system, a Transmission Time Internal (TTI) pair, the first several Orthogonal Frequency Division Multiplexing (OFDM) The symbols are used for the transmission of the Physical Downlink Control Channel (PDCCH), and the latter OFDM symbols are used for the transmission of data. In a traditional LTE system, depending on the system configuration, for a system with a large bandwidth (the downlink system is greater than 10 physical resource blocks (PRBs)), the PDCCH may occupy 1-3 OFMD symbols; The system (the downlink system is less than or equal to 10 PRBs) occupies 2-4 OFDM symbols, because the number of subcarriers per OFDM symbol is small, so more symbols are needed to carry the control information in the PDCCH, and pass The Physical Control Format Indicator Channel (PCFICH) indicates how many OFDM symbols the PDCCH is occupied by the User Equipment (UE). By detecting the PCFICH channel information, the UE can know that the PDCCH occupies several OFDM symbols in the current time transmission, and the data transmission starts from the OFDM symbol. As shown in FIG. 1 , in the conventional LTE, a PDCCH and a data channel OFDM symbol occupation diagram is shown, wherein the abscissa represents an OFDM symbol value, and the ordinate represents a frequency domain resource. In FIG. 1, the PDCCH occupies 3 OFDM symbols.

Starting from the LTE R8 system, Multiple-Input Multiple-Out-put (MIMO) technology has been widely used, especially in LTE R ⁹ and R10 systems, multi-user multiple input multiple output (Multi-User-Multiple- The Input Multiple-Out-put (MU-MIMO) technology has been enhanced and optimized. Therefore, in LTE R9 and R10 systems, user terminals operating in MU-MIMO will be greatly increased. In order to support simultaneous transmission of a large number of users, The capacity of the PDCCH presents a challenge. In particular, for some new application scenarios, for example, when multiple Radio Remote Heads (RRHs) share the same cell ID, that is, when multiple RRHs are in the same cell, the capacity of the legacy LTE system PDCCH is limited and cannot be supported. A large number of users, which does not match the larger data capacity of the LTE system. Therefore, how to increase the capacity of the PDCCH is one of the technical problems to be solved in the prior art. SUMMARY OF THE INVENTION The embodiments of the present invention provide an enhanced PDCCH implementation method and related equipment, which are used to increase the capacity of a PDCCH system of a legacy LTE system.

 An embodiment of the present invention provides an enhanced PDCCH implementation method, including:

 The resource allocation indication information is transmitted to the user terminal UE, where the resource allocation indication information includes available OFDM symbol values and frequency resource information of the enhanced physical downlink control channel E-PDCCH for transmitting control signaling.

 An embodiment of the present invention provides another enhanced PDCCH implementation method, including:

 The user terminal UE receives the resource allocation indication information sent by the base station, where the resource allocation indication information includes the available orthogonal frequency division multiplexing OFDM symbol value and the frequency resource of the enhanced physical downlink control channel E-PDCCH for transmitting control signaling. Information

 The UE performs E-PDCCH detection on the available OFDM symbol value of the E-PDCCH and the time-frequency resource corresponding to the frequency resource information.

 An embodiment of the present invention provides a base station, including:

 And a sending unit, configured to send resource allocation indication information to the user terminal UE, where the resource allocation indication information includes an available orthogonal frequency division multiplexing OFDM symbol value of the enhanced physical downlink control channel E-PDCCH for transmitting control signaling And frequency resource information.

 The embodiment of the invention provides a mobile terminal, including:

 a receiving unit, configured to receive resource allocation indication information sent by the base station, where the resource allocation indication information includes an OFDM symbol value and an OFDM symbol of an enhanced physical downlink control channel E-PDCCH for transmitting control signaling Frequency resource information;

 And a detecting unit, configured to perform E-PDCCH detection on a time-frequency resource corresponding to the available OFDM symbol value and the frequency resource information of the E-PDCCH.

 The enhanced PDCCH implementation method and related device provided by the embodiment of the present invention, the base station sends the resource allocation indication information to the user terminal, where the resource allocation indication information includes the available OFDM symbol value and frequency of the E-PDCCH for transmitting control signaling. The resource information is such that the mobile terminal performs the E-PDCCH detection according to the available OFDM symbol value and the frequency resource information of the E-PDCCH, thereby implementing the E-PDCCH and increasing the capacity of the PDCCH of the legacy LTE system.

Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of OFDM symbol occupation of a PDCCH and a data channel in a conventional LTE; FIG. 2 is a schematic diagram of a possible E-PDCCH resource occupation according to an embodiment of the present invention;

 2b is a schematic diagram of another possible E-PDCCH resource occupation in the embodiment of the present invention;

 FIG. 3 is a schematic diagram of an implementation process of an enhanced PDCCH implementation method on a base station side according to an embodiment of the present invention; FIG. 4 is a schematic diagram of resource occupation when an OFDM and an E-PDCCH are available in an OFDM collision according to an embodiment of the present invention; In the embodiment, the base station determines an implementation flow diagram of the frequency resource allocated to the UE. FIG. 6 is a schematic flowchart of an implementation process of the enhanced PDCCH implementation method on the UE side according to an embodiment of the present invention;

 FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention;

 FIG. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. In an embodiment of the present invention, an enhanced PDCCH implementation method and related devices are provided in an embodiment of the present invention.

 The preferred embodiments of the present invention are described in conjunction with the accompanying drawings, and the preferred embodiments of the present invention are intended to illustrate and explain the invention, and not to limit the invention, and The embodiments and the features in the embodiments can be combined with each other.

 An embodiment of the present invention provides an enhanced PDCCH (E-PDCCH). The basic idea is that the E-PDCCH places the information of the control channel on the physical downlink shared channel of the LTE R8/R9/R10 system (PDSCH, Physical Downlink Shared Channel). Transfer on. As shown in FIG. 2a, it is a schematic diagram of a possible E-PDCCH resource occupation, where the abscissa represents the OFDM symbol value, and the ordinate represents the frequency domain resource. In FIG. 2a, the E-PDCCH occupies the (k+3)~ (k+13) part of the frequency resource on the OFDM symbol; as shown in FIG. 2b, another possible E-PDCCH resource occupation diagram, wherein the abscissa represents the OFDM symbol value, and the ordinate represents the frequency domain resource, In 2b, the E-PDCCH occupies part of the frequency resources on the (k+3th (k+13)th OFDM symbol, where different areas of the shaded part respectively represent E-PDCCHs of different UEs.

 Based on the foregoing design concept, an embodiment of the present invention provides an enhanced PDCCH implementation method and related equipment, which are used to increase the capacity of a legacy LTE system PDCCH.

 As shown in FIG. 3, it is a schematic flowchart of an implementation process of a PDCCH implementation method according to an embodiment of the present invention, which includes:

 The S30K sends resource allocation indication information to the UE (user terminal), where the resource allocation indication information includes an available OFDM symbol value and available frequency resource information of the E-PDCCH for transmitting control signaling;

Specifically, the resource allocation indication information sent by the base station to the mobile terminal may include two parts, one part. The sub-content is used to indicate the available OFDM symbol value of the E-PDCCH of the UE, that is, the E-PDCCH of the UE may occupy those OFDM symbols in one TTI. For convenience of description, the available OFDM symbol values of the E-PDCCH of the UE are correspondingly below. The OFDM symbol is denoted as Oset; the partial content is used to indicate the available frequency resource of the UE's E-PDCCH, that is, the carrier/carrier group/PRB (physical resource block) that the E-PDCCH of the UE may occupy, etc., where one PRB It can be divided into multiple carrier groups. For convenience of description, the frequency resource corresponding to the available frequency resource information of the E-PDCCH of the UE is denoted as Fset, and the carrier is taken as an example for description. As shown in Fig. 2a, Oset={ ( k+3 ), ( k+4 ), ... ( k+13 ) } , Fset={carrier f ₈ , carrier f ₁₅ , carrier f ₁₆ , carrier f ₁₇ }.

 In an implementation, the enhanced PDCCH implementation method provided by the embodiment of the present invention may further include the following steps: S302: Instruct the UE to perform E-PDCCH on the time-frequency resource corresponding to the available OFDM symbol value of the E-PDCCH and the available frequency resource information. Detection.

 Specifically, the UE is instructed to perform E-PDCCH detection on time-frequency resources determined by Oset and Fset.

In a specific implementation, the OFDM symbol and the frequency resource that the PDCCH of the UE may occupy by the PDCCH of the UE, as shown in FIG. 4, is the value of k, k+1, k+2, as shown in FIG. The frequency resource that may be occupied is the carrier carrier f ₁₇ , and the OFDM symbol value that the E-PDCCH of the UE may occupy is k+2, k+3, k+4, ..., k+13, UE E The frequency resource that the PDCCH may occupy is the carrier f ₁₅ to the carrier f ₁₇ , and thus, it can be seen that the OFDM symbol that the PDCCH of the UE may occupy conflicts with the OFDM symbol that the E-PDCCH of the UE may occupy. In this case, in the embodiment of the present invention, the solution may be solved as follows:

 method one

 The base station ensures that there is no collision between the PDCCH of all UEs and the OFDM symbols that the E-PDCCH may occupy by scheduling. This is because the subframes that the PDCCH can occupy are variable (subframes, that is, the time-frequency positions determined by each OFDM symbol and each carrier, which can be understood as each square in FIG. 4), so the base station is determining When the PDCCH and the E-PDCCH of each UE are set, the ODFM symbol value and the occupied carrier may be set differently, so that there is no conflict between the two.

 Based on the foregoing analysis, the enhanced PDCCH implementation method provided by the embodiment of the present invention may further include the following steps:

 Before transmitting the resource allocation indication information to the UE, it is determined that there is no collision between the E-PDCCH and the available OFDM symbols of the PDCCH and the frequency resources allocated for the E-PDCCH and the PDCCH.

 Way two

When the base station determines that there is a collision between the E-PDCCH and the available OFDM symbols of the PDCCH, the base station transmits the E-PDCCH on the OFDM symbol that is not occupied by the PDCCH. For example, in the scenario where the collision occurs in the scenario, the base station has a symbol value (k+). 3) The carrier f ₁₅ to the carrier f ₁₇ on the OFDM symbol of ~ ( k+13 ) transmit the E-PDCCH, and at the same time, indicate that the UE only needs to be on the OFDM symbol with the symbol value of ( k+3 ) ~ ( k+13 ) The E-PDCCH detection is performed on the carrier f ₁₅ to the carrier f ₁₇ . Based on the foregoing analysis, the enhanced PDCCH implementation method provided by the embodiment of the present invention may further include the following steps:

 When it is determined that there is a collision between the E-PDCCH and the available OFDM symbols of the PDCCH, in the available OFDM symbols of the E-PDCCH, the E-PDCCH is transmitted by using an OFDM symbol other than the available OFDM symbols of the PDCCH. That is, if the available OFDM symbol set of the PDCCH is A, the available OFDM symbol set of the E-PDCCH is B, and the intersection of A and B is C, and the set C is the conflicting part of the available OFDM symbols of the E-PDCCH and the PDCCH. In the example, the OFDM symbol transmission E-PDCCH is selected in the set (BC).

 Way three

 When the base station determines that there is a collision between the E-PDCCH and the available OFDM symbols of the PDCCH, the base station does not transmit the E-PDCCH to the UE.

 Based on this, the enhanced PDCCH implementation method provided by the embodiment of the present invention may further include the following steps: When determining that the E-PDCCH has a conflict with the available OFDM symbols of the PDCCH, the E-PDCCH is not transmitted.

 Specifically, in a specific implementation, if it is determined that the E-PDCCH has a conflict with the available OFDM symbols of the PDCCH, the E-PDCCH may be transmitted on the available OFDM symbols of the E-PDCCH without considering the collision. That is, if the available OFDM symbol set of the PDCCH is A, the available OFDM symbol set of the E-PDCCH is B, and the intersection of A and B is C, and the set C is the conflicting part of the available OFDM symbols of the E-PDCCH and the PDCCH. In the example, the OFDM symbol transmission E-PDCCH is selected in the set B.

In a specific implementation, in order to implement the enhanced E-PDCCH, before the resource allocation indication information is sent to the UE, the frequency resource allocated to the E-PDCCH is determined from the frequency resources corresponding to the available frequency resource information. For example, as shown in FIG. 4, the time-frequency resource that can be used to transmit the E-PDCCH is determined by the OFDM symbol corresponding to the symbol value (k+2) ~ (k+13) and the carrier f ₁₅ to the carrier f ₁₇ Frequency position. For each UE, the base station needs to determine to transmit the E-PDCCH for the UE specifically at those time-frequency locations.

 As shown in FIG. 5, for each UE, the base station determines a flow chart of the implementation of the frequency resource allocated to the UE, and includes the following steps:

 S501. The frequency resource corresponding to the available frequency resource information is divided into multiple frequency resource sets according to a preset rule.

S502: Select, according to system information, and/or CQI (channel shield quantity indication) information fed back by the UE, a frequency resource set from the determined frequency resource set;

 In a specific implementation, the base station may select a frequency resource set from the set of the determined frequency resources according to the CQI information or the system information fed back by the UE, where the system information may be the scheduling of the base station. Information, occupancy of other UEs on frequency resources, etc.

S503. Determine a frequency resource included in the selected frequency resource set as a frequency resource allocated by the E-PDCCH. Specifically, in the Fset, the basic unit of the frequency resource may be a carrier, may be a carrier group, or may be a PRB or the like. In this example, the basic unit of the frequency resource is taken as an example for description. The Fset includes the carriers ft, f ₂ , f ₃ , f ₄ , f ₅ fi ₈ , selecting a frequency resource subset of the E-PDCCH consisting of K carriers from the Fset, denoted as S_K_1,

K is called the degree of aggregation of frequency resources. Taking Κ=3 as an example, from the beginning, three carriers are selected in turn as a sub-set of carrier frequencies, that is, S_3_l={ ft, f ₂ , f ₃ }, using a similar method. The carrier included in the Fset is divided, and the remaining subsets of carrier frequencies can be obtained, which are S_3_2={ f ₄ , f ₅ , f ₆ } , S_3_3={ &, f ₈ , f ₉ } , S_3_4={ f ₁₀ , f _u , f ₁₂ } , S_3_5={ f ₁₃ , f ₁₄ , fis} , S_3_6={ f ₁₆ , f ₁₇ , f ₁₈ }. Let Lset_K_M denote the set of frequency resources available to the UE, where K is the degree of aggregation of the frequency resources, Μ is the number of subsets of the frequency resource set, and the base station can configure Κ, Μ, then Lset_3_6={ S_3_l , S_3_2, S_3_3 , S_3_4, S_3_5, S_3_6}. For each UE, when determining the carrier allocated by the E-PDCCH of the UE, the base station may select a frequency resource subset from Lset_3_6 for transmission according to information such as CQI fed back by the UE. For example, S_3_1 is selected, that is, the E-PDCCH is transmitted to the UE at the carriers ft, f ₂ , and f ₃ .

 So far, the base station determines the frequency resource that can transmit the E-PDCCH for the UE, and the base station can transmit the available OFDM symbols of the E-PDCCH to the UE, so that the time-frequency resource of the E-PDCCH can be transmitted to the UE.

 In a specific implementation, for each UE, after the base station processes the control signaling transmitted by the UE, the control signaling may be transmitted on the determined time-frequency resource according to the following principles:

 Step 1. In the first OFDM symbol in Oset (sorted in chronological order), control signaling is sequentially allocated in the determined frequency domain position;

For example, on the (k+2)th OFDM symbol in FIG. 4, control signaling is sequentially allocated on the carriers ft, f ₂ , and f ₃ . Step 2: In the second OFDM symbol in Oset (sorted in chronological order), the remaining control signaling is sequentially allocated in the determined frequency domain position;

That is, on the (k+3)th OFDM symbol in FIG. 4, control signaling is sequentially allocated on the carriers ft, f ₂ , and f ₃ . According to the above method, the remaining control signaling is sequentially allocated in the determined frequency domain position on each available OFDM symbol in turn until the allocation is completed.

 Based on this, the enhanced PDCCH implementation method provided by the embodiment of the present invention may further include the steps of: sequentially selecting one OFDM symbol in chronological order;

 On the selected OFDM symbol, control signaling is allocated at a position corresponding to the frequency resource included in the selected frequency resource set.

 In particular, in the above process, if the resource element (RE, Resource Element) location needs to transmit a reference signal (RS, Refrence Signal), the RE location does not allocate control signaling.

 Based on the same inventive concept, another enhanced PDCCH implementation method and related device are provided in the embodiment of the present invention. The method for solving the problem between the method and the related device is similar to the enhanced PDCCH implementation method, and the method and related device are For the implementation, refer to the implementation of the enhanced PDCCH implementation method described above, and the repeated description is not repeated.

As shown in FIG. 6, the implementation flow of the enhanced PDCCH implementation method on the UE side of the embodiment of the present invention is shown in FIG. The diagram includes the following steps:

 The UE receives the resource allocation indication information sent by the base station, where the resource allocation indication information includes an OFDM symbol value and frequency resource information of an E-PDCCH for transmitting control signaling.

 5602. The UE performs E-PDCCH detection on the available OFDM symbol value of the E-PDCCH and the time-frequency resource corresponding to the frequency resource information.

 Preferably, the UE may further include the following steps before detecting the E-PDCCH by using the OFDM symbol value of the E-PDCCH and the location corresponding to the frequency resource information:

 The UE determines that there is no collision between the E-PDCCH and the available OFDM symbols of the PDCCH.

 Preferably, when the UE determines that the E-PDCCH has a conflict with the available OFDM symbols of the PDCCH, the UE may process the following manner:

 Processing method one

 If the UE determines that the available OFDM symbols of the E-PDCCH indicated in the resource allocation indication information collide with the available OFDM symbols of the PDCCH indicated by the PCFICH, the detection error is considered, and the E-PDCCH detection is not performed.

 Based on this, the implementation process of the enhanced PDCCH implementation method on the UE side may further include the following steps: When the UE determines that the E-PDCCH has a collision with the available OFDM symbols of the PDCCH, the E-PDCCH detection is not performed.

 Processing method 2

 If the UE determines that the available OFDM symbols of the E-PDCCH indicated in the resource allocation indication information collide with the available OFDM symbols of the PDCCH indicated by the PCFICH, according to the available OFDM symbols and frequency resource information of the E-PDCCH indicated in the resource allocation indication information, E-PDCCH detection is performed at the corresponding time-frequency position.

 Based on this, the implementation process of the enhanced PDCCH implementation method on the UE side may further include the following steps:

When there is a collision between the E-PDCCH and the available OFDM symbols of the PDCCH, the E-PDCCH is detected according to the resource allocation indication information.

 As shown in FIG. 7, a schematic structural diagram of a base station according to an embodiment of the present invention includes:

 The sending unit 701 is configured to send, to the UE, resource allocation indication information, where the resource allocation indication information includes an Orthogonal Frequency Division Multiplexing (OFDM) symbol value and frequency resource information of an E-PDCCH for transmitting control signaling.

 In a specific implementation, the base station provided by the embodiment of the present invention may further include:

 The indicating unit 702 is configured to instruct the UE to perform E-PDCCH detection on the time-frequency resource corresponding to the available OFDM symbol value of the E-PDCCH and the available frequency resource information.

 In a specific implementation, the base station provided by the embodiment of the present invention may further include:

 The first determining unit is configured to determine, according to the frequency resource corresponding to the available frequency resource information, the frequency resource allocated for the E-PDCCH, before sending the resource allocation indication information to the UE.

 Preferably, the first determining unit may include:

a sub-unit, configured to divide the frequency resource corresponding to the available frequency resource information into multiple frequencies according to a preset rule Rate resource collection;

 Selecting a subunit, configured to select a frequency resource set from the frequency resource set according to the system information, and/or the channel shield quantity CQI information fed back by the UE;

 And a determining subunit, configured to determine a frequency resource included in the frequency resource set selected by the selecting subunit as a frequency resource allocated by the E-PDCCH.

 In a specific implementation, the base station provided by the embodiment of the present invention may further include:

 a selecting unit, configured to sequentially select one OFDM symbol in chronological order;

 And an allocating unit, configured to allocate control signaling at a location corresponding to the frequency resource included in the selected frequency resource set on the selected OFDM symbol.

 In a specific implementation, the base station provided by the embodiment of the present invention may further include:

 And a second determining unit, configured to determine, before sending the resource allocation indication information to the UE, that there is no conflict between the E-PDCCH and the available OFDM symbols of the PDCCH and the frequency resources allocated for the E-PDCCH and the PDCCH.

 In a specific implementation, the base station provided by the embodiment of the present invention may further include:

 a processing unit, configured to determine, when the E-PDCCH has a collision with an available OFDM symbol of the PDCCH, select an OFDM symbol other than the available OFDM symbol of the PDCCH to transmit the E-PDCCH in the available OFDM symbols of the E-PDCCH; or determine the E-PDCCH When the PDCCH has a collision with the available OFDM symbols of the PDCCH, the E-PDCCH is not transmitted; or when the E-PDCCH is determined to collide with the available OFDM symbols of the PDCCH, the E-PDCCH is transmitted on the available OFDM symbols of the E-PDCCH.

 As shown in FIG. 8, a schematic structural diagram of a mobile terminal according to an embodiment of the present invention includes:

 The receiving unit 801 is configured to receive resource allocation indication information that is sent by the base station, where the resource allocation indication information includes an OFDM symbol value and an available frequency resource information of an E-PDCCH for transmitting control signaling.

 The detecting unit 802 is configured to perform E-PDCCH detection on the available OFDM symbol value of the E-PDCCH and the time-frequency resource corresponding to the available frequency resource information.

 In a specific implementation, the mobile terminal provided by the embodiment of the present invention may further include:

 And a determining unit, configured to determine that the E-PDCCH does not collide with the available OFDM symbols of the PDCCH before performing E-PDCCH detection on the available OFDM symbol value of the E-PDCCH and the time-frequency resource corresponding to the available frequency resource information.

 In a specific implementation, the mobile terminal provided by the embodiment of the present invention may further include:

 a processing unit, configured to: when determining that there is a conflict between the E-PDCCH and the available OFDM symbols of the PDCCH,

E-PDCCH detection; or used to perform E-PDCCH detection according to resource allocation indication information when determining that there is a collision between the E-PDCCH and the available OFDM symbols of the PDCCH.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, 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 present invention can be applied to one or more computers in which computer usable program code is included. A form of computer program product embodied on a storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.).

 The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process 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 the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

 The enhanced PDCCH implementation method and related device provided by the embodiment of the present invention, the base station sends the resource allocation indication information to the user terminal, where the resource allocation indication information includes the available OFDM symbol value and frequency of the E-PDCCH for transmitting control signaling. The resource information is such that the mobile terminal performs the E-PDCCH detection according to the available OFDM symbol value and the frequency resource information of the E-PDCCH, thereby implementing the E-PDCCH and increasing the capacity of the PDCCH of the legacy LTE system.

 Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, 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 present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), 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 computers are available Program instructions to a processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that instructions executed by a processor of a computer or other programmable data processing device are generated for implementation in a process A device or a plurality of processes and/or block diagrams of a device in a block or a plurality of blocks.

 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 the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

 It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the inventions

Claims

Rights request  An enhanced PDCCH implementation method, including:  Transmitting, by the user terminal UE, resource allocation indication information, where the resource allocation indication information includes an available orthogonal frequency division multiplexing OFDM symbol value and available frequency resource information of the enhanced physical downlink control channel E-PDCCH for transmitting control signaling .  2. The method of claim 1, further comprising:  Instructing the UE to perform E-PDCCH detection on the time-frequency resource corresponding to the available OFDM symbol value of the E-PDCCH and the available frequency resource information.  3. The method of claim 1, further comprising:  Before transmitting the resource allocation indication information to the UE, determining, from the frequency resources corresponding to the available frequency resource information, the frequency resource allocated for the E-PDCCH.  The method according to claim 3, wherein the frequency resource allocated to the E-PDCCH is determined from the frequency resource corresponding to the available frequency resource information, and specifically includes:  And dividing the frequency resource corresponding to the available frequency resource information into multiple frequency resource sets according to a preset rule;  Selecting a frequency resource set from the determined frequency resource set according to system information, and/or channel quality indication CQI information fed back by the UE;  The frequency resource included in the selected frequency resource set is determined as the frequency resource allocated by the E-PDCCH.  5. The method of claim 4, further comprising:  Selecting an OFDM symbol in chronological order;  The control signaling is allocated at a location corresponding to a frequency resource included in the selected frequency resource set on the selected OFDM symbol. The method according to any one of claims 1 to 5, further comprising: determining that the E-PDCCH and the physical downlink control channel PDCCH are available before transmitting the resource allocation indication information to the UE OFDM symbols and allocation for the E-PDCCH and PDCCH There are no conflicts in the frequency resources.  The method according to any one of claims 1 to 5, further comprising: determining, before transmitting the resource allocation indication information to the UE, that there is a conflict between the E-PDCCH and the available OFDM symbols of the PDCCH, In the available OFDM symbols of the E-PDCCH, selecting an OFDM symbol other than the available OFDM symbols of the PDCCH to transmit the E-PDCCH; or  Before determining that the E-PDCCH has a collision with the available OFDM symbols of the PDCCH, before transmitting the resource allocation indication information to the UE, the E-PDCCH is not transmitted; or  And before transmitting the resource allocation indication information to the UE, determining that the E-PDCCH has a collision with the available OFDM symbols of the PDCCH, and transmitting the E-PDCCH on the available OFDM symbols of the E-PDCCH.  8. An enhanced PDCCH implementation method, including:  The user terminal UE receives the resource allocation indication information sent by the base station, where the resource allocation indication information includes the available OFDM symbol values and frequency resources of the enhanced physical downlink control channel E-PDCCH for transmitting control signaling. Information  The UE performs E-PDCCH detection on the time-frequency resource corresponding to the available OFDM symbol value and the frequency resource information of the E-PDCCH.  The method according to claim 8, wherein before the UE detects the E-PDCCH at the position corresponding to the available OFDM symbol value and the frequency resource information of the E-PDCCH, the method further includes:  The UE determines that the E-PDCCH does not collide with an available OFDM symbol of a physical downlink control channel PDCCH.  10. The method of claim 9, further comprising:  When the UE determines that the E-PDCCH has a collision with an available OFDM symbol of the PDCCH, the UE does not perform E-PDCCH detection; or  When the UE determines that the E-PDCCH has a conflict with the available OFDM symbols of the PDCCH, the UE performs E-PDCCH detection according to the resource allocation indication information. A base station, comprising: a sending unit, configured to send resource allocation indication information to the user terminal UE, where the resource allocation indication information includes an available orthogonal frequency division multiplexing OFDM symbol value of the enhanced physical downlink control channel E-PDCCH for transmitting control signaling And frequency resource information.  12. The base station according to claim 11, further comprising:  And an indication unit, configured to instruct the UE to perform E-PDCCH detection on an available OFDM symbol value of the E-PDCCH and a time-frequency resource corresponding to the available frequency resource information.  The base station according to claim 12, further comprising:  And a first determining unit, configured to determine, according to the frequency resource corresponding to the available frequency resource information, a frequency resource allocated to the E-PDCCH, before sending the resource allocation indication information to the UE.  The base station according to claim 13, wherein the first determining unit comprises: a dividing subunit, configured to divide the frequency resource corresponding to the available frequency resource information into multiple according to a preset rule Frequency resource set;  Selecting a subunit, configured to select a frequency resource set from the set of frequency resources according to system information, and/or channel quality indication CQI information fed back by the UE;  And a determining subunit, configured to determine a frequency resource included in the selected frequency resource set as the frequency resource allocated by the E-PDCCH.  The base station according to claim 14, further comprising:  a selecting unit, configured to sequentially select one OFDM symbol in chronological order;  And an allocating unit, configured to allocate, on the selected OFDM symbol, the control signaling at a position corresponding to a frequency resource included in the selected frequency resource set.  The base station according to any one of claims 11 to 15, further comprising: a second determining unit, configured to determine, before sending the resource allocation indication information to the UE The E-PDCCH does not conflict with the available OFDM symbols of the physical downlink control channel PDCCH and the frequency resources allocated for the E-PDCCH and the PDCCH. The base station according to any one of claims 11 to 15, further comprising: a processing unit, configured to determine an available OFDM of the E-PDCCH and the PDCCH before transmitting the resource allocation indication information to the UE When the symbols are in conflict, the available OFDM in the E-PDCCH In the symbol, the E-PDCCH is transmitted by using an OFDM symbol other than the available OFDM symbol of the PDCCH; or is used to determine that the E-PDCCH does not collide with the available OFDM symbols of the PDCCH before transmitting the resource allocation indication information to the UE, and does not transmit E. The PDCCH is used to transmit the E-PDCCH on the available OFDM symbols of the E-PDCCH when it is determined that the E-PDCCH has a collision with the available OFDM symbols of the PDCCH before transmitting the resource allocation indication information to the UE.  18. A mobile terminal, comprising:  a receiving unit, configured to receive resource allocation indication information sent by the base station, where the resource allocation indication information includes an OFDM symbol value and an OFDM symbol of an enhanced physical downlink control channel E-PDCCH for transmitting control signaling Available frequency resource information;  And a detecting unit, configured to perform E-PDCCH detection on the time-frequency resource corresponding to the available OFDM symbol value and the available frequency resource information of the E-PDCCH.  The mobile terminal of claim 18, further comprising:  a determining unit, configured to determine an available OFDM symbol value of the E-PDCCH and the physical downlink control channel PDCCH before performing E-PDCCH detection on the OFDM symbol value of the E-PDCCH and the time-frequency resource corresponding to the available frequency resource information There is no conflict.  The mobile terminal of claim 19, further comprising:  a processing unit, configured to: when determining that the E-PDCCH has a conflict with an available OFDM symbol of the PDCCH, does not perform E-PDCCH detection; or is used to determine, when determining that the E-PDCCH and the PDCCH have available OFDM symbols, The resource allocation indication information performs E-PDCCH detection.