WO2015176301A1 - 序列生成的方法和用于序列生成的终端、基站 - Google Patents
序列生成的方法和用于序列生成的终端、基站 Download PDFInfo
- Publication number
- WO2015176301A1 WO2015176301A1 PCT/CN2014/078246 CN2014078246W WO2015176301A1 WO 2015176301 A1 WO2015176301 A1 WO 2015176301A1 CN 2014078246 W CN2014078246 W CN 2014078246W WO 2015176301 A1 WO2015176301 A1 WO 2015176301A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sequence
- candidate
- frequency band
- terminal
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to the field of communications, and in particular, to a method for generating a sequence and a terminal and a base station for generating a sequence. Background technique
- the initialization state of the pseudo-random sequence generator can be used to distinguish sequences, such as
- Cinit 2 10 -(7-( , + l) + l + l)-(2- ⁇ + ⁇ ) + 2- ⁇ + ⁇ CP ,
- N CP is 1 in the normal CP (Cyclic Prefix) and N CP is 0 when the CP is extended.
- x 2 (n + 31) (x 2 (n + 3) + X2 (n + 2) + X2 (n + 1) + X2 (n)) mod 2
- N c is a constant.
- Sequences such as scrambling sequences and pilot sequences are generated in accordance with the generation of pseudo-random sequences.
- the actual sequence length is much smaller than the sequence length that needs to be generated, which results in low efficiency of sequence generation, wasted computing resources, and high energy consumption. This problem is more pronounced when the system bandwidth exceeds 20M. Summary of the invention
- the present invention provides a method for sequence generation and a terminal and a base station for sequence generation, which reduce the complexity of sequence generation.
- the first aspect provides a method for sequence generation, the method comprising:
- the at least one first sequence is connected to generate or directly as a second sequence, and the signal is received according to the second sequence; the second sequence is at least one of a reference signal sequence or a scrambling code sequence.
- each of the at least one first sequence is one candidate sequence of the at least one candidate sequence or one candidate sequence of the at least one candidate sequence Subsequence, the subsequence is part of the candidate sequence.
- the at least one first sequence is connected to generate the second sequence, including:
- the at least two first sequences are joined to generate a second sequence.
- the at least one first sequence is connected to generate the second sequence, including:
- Determining at least one third sequence wherein the third sequence is a predefined sequence or a sequence determined according to a pre-configured identifier
- the length of the candidate sequence is preset or the base station configuration Or terminal selection.
- the method further includes: obtaining, by the terminal, a sequence number, where the sequence number is used to generate an initialization state value of the sequence generator; and generating at least one candidate sequence by using the sequence number.
- the step of obtaining, by the terminal, the sequence number includes:
- the terminal detects an access pilot for the frequency band used for access,
- the terminal acquires a sequence number of at least one other frequency band other than the frequency band to be accessed according to the detection result of the access pilot, or the terminal receives the control signaling according to the access pilot, where the control signaling includes the frequency band for access
- the pilot sequence configuration information on the at least one other frequency band and the terminal acquires the sequence number of at least one other frequency band other than the frequency band used for access according to the pilot sequence configuration information
- the terminal receives control signaling sent by the base station, and the control signaling includes at least one sequence number information and/or composition mode information of the second sequence.
- the step of acquiring, by the terminal, the sequence number of the at least one other frequency band except the frequency band that is accessed according to the detection result of the access pilot includes: determining, by the terminal, sequence number of at least one other frequency band according to sequence configuration information of at least one other frequency band carried by the pilot and/or a sequence relationship or a frequency band position relationship of the frequency band used for access and the at least one other frequency band.
- the sequence number is an absolute number or a relative number.
- the absolute number is an absolute frequency domain location number, or the relative number is a relative frequency domain location number.
- the at least one candidate sequence is generated by using the sequence number, including:
- the terminal generates a corresponding number of candidate sequences according to at least one sequence number; or The terminal generates a candidate sequence according to a sequence number, and generates other candidate sequences according to the relative positions of the at least one candidate sequence generated by the sequence number.
- the at least one candidate sequence is generated by using the sequence number, including:
- the initial state value of the sequence generator corresponding to the candidate sequence is generated according to the following formula:
- c mit is the initialization state value of the sequence generator corresponding to at least one candidate sequence
- ⁇ is the slot number
- 1 is the OFDM symbol number in the slot
- sequence number is the cell number
- N CP is in the normal CP 1
- N CP is 0 when expanding CP
- a candidate sequence is generated based on the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include the sequence length, the sequence number, or the transmit power. At least one of them.
- the frequency band corresponding to the at least one candidate sequence includes a DC subcarrier.
- a second aspect provides a method for sequence generation, the method comprising: determining, by a base station, at least one first sequence according to at least one candidate sequence; the length of the candidate sequence is less than a sequence length corresponding to a maximum available system bandwidth;
- the at least one first sequence is connected to generate or directly as a second sequence, and the signal is transmitted according to the second sequence; the second sequence is at least one of a reference signal sequence or a scrambling code sequence.
- each of the at least one first sequence is a candidate sequence of the at least one candidate sequence or a candidate sequence of the at least one candidate sequence Subsequence, the subsequence is part of the candidate sequence.
- the at least one first sequence is connected to generate the second sequence, including: at least two The first sequence of connections generates a second sequence.
- the at least one first sequence is connected to generate the second sequence, including:
- Determining at least one third sequence wherein the third sequence is a predefined sequence or a sequence determined according to a pre-configured identifier
- the length of the candidate sequence is preset or the base station selects Or network control node configured.
- the candidate sequence when the candidate sequence includes at least two candidate sequences, The two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different.
- the method further includes:
- the base station obtains a sequence number, and the sequence number is used to generate an initialization state value of the sequence generator; and at least one candidate sequence is generated by using the sequence number.
- the step of acquiring, by the base station, the sequence number includes:
- the base station determines an access pilot for the frequency band used for access
- the base station determines the sequence number of the at least one other frequency band according to the sequence relationship or the frequency band positional relationship of the frequency band used for access and the at least one other frequency band.
- the base station determines a sequence of the at least one other frequency band according to a sequence relationship or a frequency band position relationship of the frequency band used for access and the at least one other frequency band
- the numbering steps also include:
- the base station transmits, to the terminal, an access pilot that carries sequence configuration information of at least one other frequency band; or, the base station indicates, by using control signaling, pilot sequence configuration information on at least one other frequency band other than the frequency band used for access.
- the sequence numbers are absolute numbers or relative numbers.
- the absolute number is an absolute frequency domain location number, or the relative number is a relative frequency domain location number.
- the at least one candidate sequence is generated by using the sequence number, including:
- the base station generates a candidate sequence based on a sequence number and generates other candidate sequences based on the relative positions of at least one candidate sequence generated by the sequence number.
- the at least one candidate sequence is generated by using the sequence number, including:
- the initial state value of the sequence generator corresponding to the candidate sequence is generated according to the following formula:
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. , N CP is 0 when the CP is extended;
- a candidate sequence is generated based on the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include the sequence length, the sequence number, or the transmit power. At least one of them.
- the frequency band corresponding to the at least one candidate sequence includes a DC subcarrier.
- the third aspect provides a terminal for sequence generation, including: a first determining module, configured to determine at least one first sequence according to at least one candidate sequence; a length of the candidate sequence is less than a sequence length corresponding to a maximum available system bandwidth;
- a first generating module configured to be connected to the first determining module, configured to connect the at least one first sequence to generate or directly as the second sequence, and receive the signal according to the second sequence;
- the second sequence is a reference signal sequence or a 4th code sequence At least one of them.
- each of the at least one first sequence is a candidate sequence of the at least one candidate sequence or a candidate sequence of the at least one candidate sequence Subsequence, the subsequence is part of the candidate sequence.
- the first connection generation module is further configured to: connect the at least two first sequences to generate the second sequence.
- the first connection generation module is further configured to:
- Determining at least one third sequence wherein the third sequence is a predefined sequence or a sequence determined according to a pre-configured identifier
- the length of the candidate sequence is preset or the base station configuration Or terminal selection.
- the candidate sequence when the candidate sequence includes at least two candidate sequences, The two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different.
- the first determining module is further configured to:
- the sequence number is used to generate an initialization state value of the sequence generator; and generating at least one candidate sequence by using the sequence number.
- the first determining module further Used for:
- control signaling includes at least a frequency band other than the access frequency band a pilot sequence configuration information on another frequency band, and obtaining a sequence number of at least one other frequency band other than the frequency band used for access according to the pilot sequence configuration information;
- the terminal receives control signaling sent by the base station, and the control signaling includes at least one sequence number information and/or composition mode information of the second sequence.
- the first determining module is further configured to:
- the sequence number of at least one other frequency band is determined according to sequence configuration information of at least one other frequency band carried by the access pilot and/or a sequence relationship or a frequency band positional relationship between the frequency band used for access and at least one other frequency band.
- the sequence number is an absolute number or a relative number.
- the absolute number is an absolute frequency domain location number, or the relative number is a relative frequency domain location number.
- the first determining module is further configured to:
- a candidate sequence is generated based on a sequence number, and other candidate sequences are generated based on relative positions with at least one candidate sequence generated by the sequence number.
- the first determining module is further configured to:
- Ciait 2 l0 -(7-(n s + l) + l + l)-(2- ⁇ + l) + 2- ⁇ + ⁇ CP , or
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. , N CP is 0 when the CP is extended;
- a candidate sequence is generated based on the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include the sequence length, the sequence number, or the transmit power. At least one of them.
- the frequency band corresponding to the at least one candidate sequence includes a DC subcarrier.
- the fourth aspect provides a base station for sequence generation, including: a second determining module, configured to determine at least one first sequence according to at least one candidate sequence; a length of the candidate sequence is less than a sequence length corresponding to a maximum available system bandwidth;
- a second generating module configured to be connected to the second determining module, configured to generate or directly serve as a second sequence according to the at least one first sequence connection, and send a signal according to the second sequence; the second sequence is in the reference signal sequence or the scrambling sequence at least one.
- each of the at least one first sequence is one candidate sequence of the at least one candidate sequence or one candidate sequence of the at least one candidate sequence Subsequence, the subsequence is part of the candidate sequence.
- the second generating module is further configured to: connect the at least two first sequences to generate the second sequence.
- the second generating module is further configured to:
- Determining at least one third sequence wherein the third sequence is a predefined sequence or a sequence determined according to a pre-configured identifier
- the length of the candidate sequence is preset or the base station is selected. Or network control node configured.
- the candidate sequence when the candidate sequence includes at least two candidate sequences, The two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different.
- the second determining module is further configured to:
- the sequence number is used to generate an initialization state value of the sequence generator; and generating at least one candidate sequence by using the sequence number.
- the second determining module is further configured to:
- the sequence number of at least one other frequency band is determined according to a sequence relationship of the frequency band used for access and at least one other frequency band or a positional relationship of the frequency band.
- the base station further includes a transmission module, configured to:
- the sequence number is an absolute number or a relative number.
- the absolute number is an absolute frequency domain location number, or the relative number is a relative frequency domain location number.
- the second determining module is further configured to: Generating a corresponding number of candidate sequences based on at least one sequence number; or
- a candidate sequence is generated based on a sequence number, and other candidate sequences are generated based on relative positions with at least one candidate sequence generated by the sequence number.
- the second determining module is further configured to: generate, by using the sequence number, an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. , N CP is 0 when the CP is extended;
- a candidate sequence is generated based on the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include the sequence length, the sequence number, or the transmit power. At least one of them.
- the frequency band corresponding to the at least one candidate sequence includes a DC subcarrier.
- the present invention determines, by the terminal, at least one first sequence according to at least one candidate sequence, where the length of the candidate sequence is less than a sequence length corresponding to a maximum available system bandwidth; connecting at least one first sequence to generate or Directly as the second sequence, and receiving the signal according to the second sequence, the second sequence is at least one of the reference signal sequence or the scrambling code sequence, so that the terminal and/or the base station can be effectively obtained by connection without according to the maximum system bandwidth or Directly obtaining the sequence actually used, that is, the second sequence, has high sequence generation efficiency, low complexity, low power consumption, and can avoid a large number of operations required in the prior art to generate a sequence according to the maximum system bandwidth, thereby saving computation Resources.
- FIG. 2 is a schematic diagram of a sequence-to-frequency domain mapping in the prior art
- FIG. 3 is a schematic flow chart of a sequence generation method according to a first embodiment of the present invention.
- FIG. 4 is a schematic diagram of a sequence generation method of a candidate sequence according to the first embodiment of the present invention
- FIG. 5 is a schematic diagram of a sequence generation method of two candidate sequences according to the first embodiment of the present invention
- FIG. 6 is a second embodiment of the present invention. Schematic diagram of the sequence generation method
- FIG. 7 is a schematic diagram of a sequence generation method of a candidate sequence according to a first embodiment of the present invention
- FIG. 8 is a schematic diagram of a DC subcarrier in a candidate sequence according to the first embodiment of the present invention
- FIG. 9 is a relative diagram of the first embodiment of the present invention. Schematic diagram of the serial number
- FIG. 10 is a schematic flowchart diagram of a sequence generation method according to a third embodiment of the present invention.
- FIG. 11 is a schematic flowchart diagram of a sequence generation method according to a fourth embodiment of the present invention.
- FIG. 12 is a schematic structural diagram of a terminal for sequence generation according to a first embodiment of the present invention
- FIG. 13 is a schematic structural diagram of a base station for sequence generation according to a first embodiment of the present invention
- FIG. 14 is a second embodiment of the present invention
- FIG. 15 is a schematic structural diagram of a base station for sequence generation according to a second embodiment of the present invention.
- FIG. 3 is a schematic flowchart diagram of a sequence generation method according to a first embodiment of the present invention. As shown in FIG. 3, a sequence generation method includes:
- the terminal determines, according to the at least one candidate sequence, the at least one first sequence, where the length of the candidate sequence is less than a sequence length corresponding to the maximum available system bandwidth.
- the candidate sequence may be generated according to a predefined length or a base station configured or terminal selected length.
- the case where the base station is configured is that the base station controls the length of the candidate sequence, as used in a cellular network.
- the case of the length selected by the terminal is the length of the terminal control candidate sequence, as used in the direct connection between the terminal and the terminal.
- the length of the candidate sequence may be selected to be close to the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal, or the length of the candidate sequence may be selected to be the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal.
- the sub-bandwidth corresponds to a close length, that is, the length of the candidate sequence is smaller than the length of the sequence corresponding to the terminal use bandwidth.
- the length of the candidate sequence is less than or equal to the first length threshold, where the first length threshold may be a sequence length corresponding to the total used bandwidth of the serving base station or the serving cell including the bandwidth served by the terminal.
- the terminal generates or directly serves as a second sequence according to the at least one first sequence connection, and receives the signal according to the second sequence, where the second sequence is at least one of a reference signal sequence or a scrambling code sequence.
- the terminal generates or directly acts as the second sequence according to the at least one first sequence connection, and may have the following three situations: a) the terminal connects the at least one first sequence to obtain the second sequence, and the length of the second sequence. More than one length of the first sequence; b) the terminal selects a first sequence from the at least one first sequence, and the selected first sequence directly serves as the second sequence; c) when the used bandwidth of the terminal is less than or equal to the candidate sequence corresponding When the frequency band is selected, one of the candidate series is selected as the second sequence; when the used bandwidth of the terminal is greater than the frequency band corresponding to the candidate sequence, at least one first sequence is connected to generate the second sequence, and the length of the second sequence is greater than one The length of a sequence.
- the terminal connects at least one first sequence to obtain the second sequence, the terminal connects the at least one first sequence according to the position, and forms a second sequence and then maps to the time-frequency resource.
- the terminal determines, according to the at least one candidate sequence, the at least one first sequence, where the length of the candidate sequence is smaller than the sequence length corresponding to the maximum available system bandwidth; the connection is generated according to the at least one first sequence connection or directly as the second sequence, and Receiving, according to the second sequence, the second sequence is at least one of a reference signal sequence or a scrambling sequence, so that the terminal can be generated by connection or directly used as actual use on the basis of generating only a few or even one short sequence.
- the terminal is optionally capable of efficiently obtaining the actually used sequence, that is, the second sequence, according to the service bandwidth of the terminal to the network, without the total use bandwidth including the bandwidth of the serving base station or the serving cell including the terminal service or Maximum system bandwidth generation sequence, resulting in sequence generation
- the high rate, low complexity, low power consumption, and the large number of operations that can be performed when generating sequences based on the maximum system bandwidth can save computing resources.
- an eNB evolved Node B
- a non-standard bandwidth or uses a large bandwidth, such as 100 MHz
- the service band of the terminal access is only a part of the frequency band used by the eNB
- the terminal may only know its access bandwidth and The service bandwidth of the network is not known by the eNB.
- the sequence generation efficiency of the terminal is low, the complexity is high, the computing resources are wasted, and the energy consumption is high.
- the beneficial effects of the present invention are particularly obvious when the service bandwidth of the terminal is much smaller than the total used bandwidth or the maximum system bandwidth of the serving base station or the serving cell, and the terminal does not know the total used bandwidth or the maximum system bandwidth of the serving base station or the serving cell:
- the sequence generation efficiency is high, the complexity is low, the energy consumption is low, and a large number of operations required to generate a sequence according to the maximum system bandwidth can be avoided, thereby saving computational resources.
- the flexibility of mapping to sequences of different frequency bands is increased, so that it is possible to flexibly adapt to the manner in which various terminals and base stations use frequency bands.
- each of the at least one first sequence is a subsequence of one candidate sequence in at least one candidate sequence or one candidate sequence in at least one candidate sequence, subsequence Is part of the candidate sequence.
- the candidate sequence includes at least two candidate sequences
- the two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different, and at least two first The candidate sequences or subsequences corresponding to the sequences are the same or different.
- the first sequence is determined based on a candidate sequence.
- the first sequence is determined as the candidate sequence, such as the second sequence ⁇ 1; the first sequence is determined as the subsequence of the candidate sequence or the candidate sequence, such as the second sequence 2, wherein the first sequence is a subsequence of the candidate sequence
- the first sequence is part of the second sequence, at the forefront and/or last and/or intermediate position of the second sequence; the first sequence is determined to be a subsequence of the candidate sequence, such as the second sequence 3.
- the first sequence is determined from the two candidate sequences A and B.
- the first sequence is determined as candidate sequence A and/or candidate sequence B, such as second sequence 1;
- the first sequence is determined as one candidate sequence A and/or candidate sequence B and one or two candidate sequences A and/or candidates a subsequence of sequence B, wherein when the first sequence is a subsequence of the candidate sequence, the first sequence is part of the second sequence, at the forefront and/or last and/or intermediate position of the second sequence, such as the second sequence ⁇
- the first sequence is determined as a subsequence of candidate sequence A and/or candidate sequence B, such as second Sequence 3.
- S10 includes:
- S100 The terminal obtains a sequence number, and the sequence number is used to generate an initialization state value of the sequence generator.
- the terminal may obtain the sequence number according to the preset or the configuration of the receiving base station or according to the identifier corresponding to the terminal.
- the terminal detects an access pilot of a frequency band used for access, and acquires a sequence number of at least one other frequency band other than the frequency band used for access according to the detection result of the access pilot, or the terminal according to the access
- the pilot receives control signaling, where the control signaling includes pilot sequence configuration information on at least one other frequency band other than the frequency band to be accessed, and the terminal acquires at least one other than the frequency band used for access according to the pilot sequence configuration information.
- the sequence number of the frequency band, where the pilot sequence configuration information includes a sequence number of at least one other frequency band other than the frequency band used for access.
- the terminal receives control signaling sent by the base station, and the control signaling includes at least one sequence number information and/or composition mode information of the second sequence.
- Obtaining, by the detection result of the access pilot, a sequence number of at least one other frequency band other than the frequency band for accessing including: sequence configuration information of the terminal according to at least one other frequency band carried by the access pilot, and/or for accessing
- the sequence relationship or frequency band positional relationship of the frequency band with at least one other frequency band determines the sequence number of at least one other frequency band.
- the sequence relationship between the frequency band used for access and the at least one other frequency band may be predefined, for example, the sequence segment number of the frequency band used for access and the sequence segment number of the sequence of at least one other frequency band are according to the sequence segment in the second
- the position in the sequence is a recursive relationship, such as a step size of 1, 2, 3, and so on.
- the candidate sequence is generated based on a predefined length or a configured or terminal selected length.
- the length of the candidate sequence may be L, the length of L is less than or equal to the first length threshold, and the first length threshold may be a pilot sequence length corresponding to a system bandwidth of 20 MHz or 100 MHz or 1000 MHz.
- the lengths of different candidate sequences may be different, such as the length of candidate sequence A being 30 and the length of candidate sequence B being 60. This makes it more flexible to select a sequence of access bandwidths that are closer to or shorter than the terminal's access bandwidth and/or network-to-terminal service bandwidth to form a pilot sequence that the terminal can see.
- Such sequence generation has high efficiency, low complexity, low energy consumption, and can avoid The maximum system bandwidth requires a large number of operations to generate a sequence, thereby saving computing resources.
- S101 Generate at least one candidate sequence by using the sequence number.
- the terminal In S101, the terminal generates a corresponding number of the candidate sequences according to at least one sequence number; or, the terminal generates one candidate sequence according to one sequence number, and generates other according to the relative position of the at least one candidate sequence generated by the sequence number.
- Candidate sequence The manner of generating the candidate sequence in the present invention may be controlled by the base station, and the selection of the manner of generating the candidate sequence as described above may be controlled by the base station.
- the second sequence is mapped to a frequency band in which the terminal receives a base station signal.
- the second sequence includes but is not limited to at least one of the following: CRS (Cell-specific Reference Signal), CSI-RS (Channel State Indication RS), DL DM RS (Downlink Demodulation Reference Signal) , downlink demodulation reference signal), DRS (Demodulation Reference Signal), PRS (Positioning Reference Signal), SRS (Sounding Reference Signal), MBSFN RS (Multimedia Broadcast Single Frequency Network) Reference Signal, multimedia broadcast single frequency network reference signal).
- CRS Cell-specific Reference Signal
- CSI-RS Channel State Indication RS
- DL DM RS Downlink Demodulation Reference Signal
- DRS Demodulation Reference Signal
- PRS Physical Reference Signal
- SRS Sounding Reference Signal
- MBSFN RS Multimedia Broadcast Single Frequency Network Reference Signal
- Each candidate sequence may be mapped in such a manner that the center of the transmission bandwidth is extended to both sides, as shown by a in FIG. 7; or each candidate sequence. It may be mapped in such a manner that one edge of the transmission bandwidth is extended to the other edge line, including the left edge to the right edge as shown by b in FIG. 7, or the right edge to the left as shown by c in FIG. Edge extension.
- the two sequences may be different.
- the terminal generating the candidate sequence may include the following situations:
- the terminal detects the pilot of the first frequency band used for access, such as CRS, by blind detection, and obtains control signaling (such as PBCH, Physical Broadcast Channel, broadcast channel) according to the pilot, and the control signaling includes the service frequency band. Pilot sequence configuration information on at least one other frequency band; obtaining candidate sequences on at least one other frequency band based on pilot sequence configuration information.
- the candidate sequence in the frequency band that the terminal can access is known in advance by the terminal, such as predefined or bound to the cell identifier, or obtained by other signals sent by the base station, such as a synchronization signal PSS/SSS or a discovery pilot DRS. .
- the terminal detects the pilot in the first frequency band, such as the DRS, by using the blind detection, and determines the candidate sequence in the other frequency band according to the relationship between the candidate sequence in the other frequency band and the candidate sequence of the pilot frequency band; or
- the information carried by the pilot DRS includes pilot sequence configuration information on at least one other frequency band in the service frequency band, and further, the candidate sequence on at least one other frequency band is obtained according to the pilot sequence configuration information.
- the terminal detects the first frequency band for access by the terminal through blind detection, such as by detecting PSS/SSS (Primary Synchronization Signal/Secondary Synchronization Signal) or DRS.
- PSS/SSS Primary Synchronization Signal/Secondary Synchronization Signal
- DRS Data Reliable and Low Latency Signal
- a candidate sequence on a second frequency band other than the first frequency band the candidate sequence may be determined according to the sequence number of the second frequency band, and the generation manner may be predefined.
- the sequence number may be a cell identifier, and the terminal may access the cell through the frequency band to maintain backward compatibility.
- At least one frequency band corresponding to the first sequence includes a DC subcarrier.
- each of the first sequence has a direct current subcarrier and a position of the direct current subcarrier on the corresponding frequency band when being mapped to the corresponding frequency band is predefined or configured.
- Sequence elements mapped on the DC subcarrier are not transmitted, or sequence units are not mapped on the DC subcarrier. Therefore, it is possible to flexibly configure which frequency bands include DC subcarriers, and the frequency bands including DC subcarriers can be used for terminal access.
- the sequence number is an absolute number or a relative number.
- the absolute number is the absolute frequency domain position number
- the relative number is the relative frequency domain position number.
- Each number in the absolute frequency domain position number corresponds to an absolute position frequency band or absolute frequency point - for example, the absolute frequency domain number can be equal to % ⁇ , where " ⁇ " is rounded up and Lx" is rounded down.
- N is a positive integer.
- the relative frequency domain position number is a number based on the position of the frequency band of the candidate sequence relative to the first frequency band.
- the first frequency band is a frequency band when the terminal accesses the system, and the frequency band is divided into C MHz units on both sides of the first frequency band, and is respectively numbered -1, -2 in the order of the left side of the first frequency band. -3... , numbered 1, 2, 3... on the right side of the first band in order.
- Each sequence can be generated from the initialization status values of the independent sequence generator.
- the initialization status value is determined by the sequence number.
- the terminal uses the sequence number to generate an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. N CP is 0 when the CP is extended; the terminal generates a candidate sequence according to the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include at least one of a sequence length, a sequence number, or a transmit power.
- the parameters of each first sequence are predefined or base station configured.
- the parameter of the first candidate sequence may be selected from at least two specific parameter values; or may be through broadcast signaling, such as through an information element in a PBCH or SIB (System Information Block) or other broadcast RRC letter.
- SIB System Information Block
- multicast signaling such as multicast DCI (downlink control information) / DCI format 3/3A or other multicast RRC (Radio Resource Control) signaling;
- user-specific (UE-specific) signaling such as by using a UE-specific PDCCH (Physical downlink control channel) or an ePDCCH (enhanced PDCCH, enhanced physical downlink control channel) or RRC signaling.
- UE-specific PDCCH Physical downlink control channel
- ePDCCH enhanced physical downlink control channel
- RRC Radio Resource Control
- the terminal performs measurement according to a first sequence in the at least one first sequence, or the terminal performs measurement according to a subsequence of a first sequence in the at least one first sequence, such as measuring the corresponding first sequence.
- whether the measurement based on the first sequence can be measured based on more than one sequence segment is determined by a predefined or base station configuration manner. In this way, different sequences can be flexibly used for measurement, and different frequency bands corresponding to different sequences can be used for different measurement purposes.
- the terminal in the step of connecting the at least one first sequence to generate the second sequence, connects the at least two first sequences to generate the second sequence. Or the terminal may determine at least one third sequence, where the third sequence is a predefined sequence or a sequence determined according to the pre-configured identifier; and connects at least one first sequence and at least one third sequence, A second sequence is obtained.
- the third sequence can be a sequence for access.
- the pre-configured identifier may be a pre-configured sequence segment number or a cell identifier.
- FIG. 10 is a schematic flowchart diagram of a sequence generation method according to a third embodiment of the present invention. As shown in FIG. 10, a sequence generation method includes:
- the base station determines at least one first sequence according to the at least one candidate sequence, where the length of the candidate sequence is less than a sequence length corresponding to the maximum available system bandwidth.
- the candidate sequence may be generated according to a predefined length or a length selected by the base station or configured by the network control node.
- the case where the base station selects is the length of the base station control candidate sequence, as used in the cellular network.
- the case of the network control node configuration is that the network node controls the length of the candidate sequence, as used in the wireless core network. If the length of the candidate sequence is preset by the base station, the base station also transmits the preset length to the terminal.
- the length of the candidate sequence may be selected to be close to the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal, or the length of the candidate sequence may be selected to be the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal.
- the sub-bandwidth corresponds to a close length, that is, the length of the candidate sequence is smaller than the length of the sequence corresponding to the terminal use bandwidth.
- the length of the candidate sequence may also be less than the length of the sequence corresponding to the bandwidth used by the base station.
- the length of the candidate sequence is less than or equal to the first length threshold.
- the first length threshold may be a pilot sequence length corresponding to a 20 MHz or 100 MHz or 1000 MHz system bandwidth.
- the lengths of different candidate sequences may be different, such that a sequence of lengths closer to or shorter than the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal may be selected to form a pilot sequence that the base station can see.
- each of the at least one first sequence is a subsequence of one candidate sequence of at least one candidate sequence or one candidate sequence of at least one candidate sequence, and the subsequence is part of the candidate sequence.
- the candidate sequence includes at least two candidate sequences
- the two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different, and at least two first sequences are different
- the corresponding candidate sequences or subsequences are the same or different.
- S20 includes:
- S200 The base station obtains a sequence number, and the sequence number is used to generate an initialization state value of the sequence generator.
- the sequence number is obtained according to a preset or a base station selection or according to an identifier corresponding to the base station.
- the base station can also send a preset sequence number to the terminal.
- the base station determines an access pilot for the frequency band used for access, and according to the access for access
- the sequence relationship of the frequency band with at least one other frequency band or the positional relationship of the frequency bands determines the sequence number of at least one other frequency band.
- the sequence relationship between the frequency band used for access and the at least one other frequency band may be predefined. For example, the sequence segment number of the frequency band used for access and the sequence segment number of the sequence of at least one other frequency band are added according to the frequency band position. Relationships, such as stepping up steps 1, 2, 3, etc.
- the base station may transmit the access pilot that carries the sequence configuration information of the at least one other frequency band to the terminal, so that the terminal obtains the sequence configuration information of the at least one other frequency band according to the information carried by the access pilot.
- the base station may indicate to the terminal, by using control signaling, pilot sequence configuration information on at least one other frequency band other than the frequency band used for access. Therefore, the base station can separately configure the sequence of the used sequences for the terminals using different frequency bands, and respectively send corresponding sequences on the corresponding frequency bands, and the sequences of the different frequency bands can be uncorrelated at this time, thereby increasing the flexibility of the sequence use.
- the terminal may be a traditional terminal. In this case, the traditional sequence may be used on the frequency band corresponding to the traditional terminal, and the base station may use other sequences to serve other terminals according to the sequence generated by the present invention.
- the sequence number is an absolute number or a relative number.
- the absolute number is the absolute frequency domain position number
- the relative number is the relative frequency domain position number.
- Each number in the absolute frequency domain position number corresponds to an absolute position frequency band or absolute frequency point - for example, the absolute frequency domain number can be equal to % ⁇ , where " ⁇ " is rounded up and Lx" is rounded down.
- N is a positive integer.
- the relative frequency domain position number is a number based on the position of the frequency band of the candidate sequence relative to the first frequency band.
- the first frequency band is the frequency band when the terminal accesses the system, and the frequency band is divided into C MHz units on both sides of the first frequency band, and the numbers are respectively -1, -2, -3 in the first frequency band in the order of the first frequency band. , in the order of the first frequency band to the right, numbered 1, 2, 3....
- S201 Generate at least one candidate sequence by using the sequence number.
- the base station In S201, the base station generates a corresponding number of candidate sequences according to at least one sequence number; or, the base station generates one candidate sequence according to one sequence number, and generates other candidates according to the relative positions of the at least one candidate sequence generated by the sequence number. sequence.
- the manner of generating the candidate sequence in the present invention may be controlled by the base station, and the selection of the manner of generating the candidate sequence as described above may be controlled by the base station.
- each candidate sequence is generated independently.
- Each candidate sequence It may be mapped in such a manner that the center of the transmission bandwidth spreads to both sides; or each candidate sequence may be mapped in such a manner that one edge of the transmission bandwidth is extended to another edge line, including the left edge to the right edge, or the right edge. Expand to the left edge.
- the two sequences may be different.
- the frequency band corresponding to the at least one first sequence includes a DC subcarrier. Whether each of the first sequence has a DC subcarrier and a position of the DC subcarrier on the corresponding frequency band when mapping to the corresponding frequency band is predefined or the base station is configured to the terminal.
- the sequence elements mapped on the DC subcarriers are not transmitted, or the sequence elements are not mapped on the DC subcarriers. Therefore, it is possible to flexibly configure which frequency bands include DC subcarriers, and the frequency bands including DC subcarriers can be used for terminal access.
- Each sequence can be generated from the initialization status values of the independent sequence generator.
- the initialization status value is determined by the sequence number.
- the base station uses the sequence number to generate an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- Ciait 2 l0 - (7 - (n s + l) + l + l) - (2 - ⁇ + l) + 2 - ⁇ + ⁇ CP , or
- c imt 2 10 ⁇ (? ⁇ ( 3 ⁇ 4 +1)+/ + 1) ⁇ (2 ⁇ A + ⁇ )+2 ⁇ A + N CP , or
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. N CP is 0 when the CP is extended; the base station generates a candidate sequence according to the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include at least one of a sequence length, a sequence number, or a transmit power.
- the parameters of each of the first sequences are predefined or configured by the base station.
- the parameters of the first candidate sequence may be selected from at least two specific parameter values; may also be configured by broadcast signaling; or configured by multicast signaling; or by user-specific (UE-specific) signaling. Configuration.
- the transmit power is constant in the time or frequency domain or the time-frequency domain, so that the gain of the frequency domain ICIC can be obtained, and the interference of the second sequence, that is, the pilot sequence, to the neighboring cell is reduced.
- the base station may further receive the measurement result of the terminal, where the measurement result is a result that the terminal performs measurement according to a first sequence in the at least one first sequence, or is a subsequence of the terminal according to a first sequence in the at least one first sequence.
- the result of the measurement such as the result of measuring the channel quality corresponding to the frequency band in which the first sequence is located.
- the terminal is configured by a predefined or base station. To determine whether the measurement based on the first sequence can be measured based on more than one sequence segment. In this way, different sequences can be flexibly used for measurement, and different frequency bands corresponding to different sequences can be used for different measurement purposes.
- S21 Build at least one first sequence connection or directly as a second sequence, and send a signal according to the second sequence, where the second sequence is at least one of a reference signal sequence or a scrambling code sequence.
- the second sequence includes but is not limited to at least one of the following: CRS, CSI-RS, DL DM RS, DRS, PRS, SRS, MBSFN RS
- the base station generates, according to the at least one first sequence connection, or directly as the second sequence, the following three situations: a) the base station connects the at least one first sequence to obtain the second sequence, and the length of the second sequence. More than one length of the first sequence; b) the base station selects a first sequence from the at least one first sequence, and the selected first sequence directly serves as the second sequence; c) when the used bandwidth of the terminal is less than or equal to the candidate sequence corresponding When the frequency band is selected, one of the candidate series is selected as the second sequence; when the used bandwidth of the terminal is greater than the frequency band corresponding to the candidate sequence, at least one first sequence is connected to generate the second sequence, and the length of the second sequence is greater than one The length of a sequence.
- the base station connects the at least one first sequence to obtain the second sequence
- the base station connects the at least one first sequence according to the position and then forms the second sequence and then maps to the time-frequency resource.
- the step of connecting the at least one first sequence to generate the second sequence comprises: the base station connecting the at least two first sequences to generate the second sequence.
- the base station determines at least one third sequence, wherein the third sequence is a predefined sequence or a sequence determined according to the pre-configured identifier, and connects at least one first sequence and at least one third sequence to obtain a second sequence.
- the third sequence can be a sequence for access.
- the pre-configured identifier can be a pre-configured sequence segment number or a cell identifier.
- both the base station and the terminal may use the connection mode or directly as the actual used sequence on the basis of only generating a few or even one short sequence, and do not need to serve the terminal according to the inclusion of the serving base station or the serving cell.
- the total used bandwidth or the maximum system bandwidth generation sequence including the bandwidth so that the sequence generation efficiency is high, the complexity is low, the energy consumption is low, and a large number of operations required to generate a sequence according to the maximum system bandwidth can be avoided, thereby saving computation Resources.
- the terminal may only know its access bandwidth. And the bandwidth of the service when the network is serving, and the bandwidth used by the eNB is not known.
- the sequence generation efficiency of the terminal is low, the complexity is high, the computing resources are wasted, and the energy consumption is high.
- the beneficial effects of the present invention are particularly obvious when the service bandwidth of the terminal is much smaller than the total used bandwidth or the maximum system bandwidth of the serving base station or the serving cell, and the terminal does not know the total used bandwidth or the maximum system bandwidth of the serving base station or the serving cell:
- the sequence generation efficiency is high, the complexity is low, the energy consumption is low, and a large number of operations required to generate a sequence according to the maximum system bandwidth can be avoided, thereby saving computational resources.
- the flexibility of mapping to sequences of different frequency bands is increased, so that it is possible to flexibly adapt to the manner in which various terminals and base stations use frequency bands.
- FIG. 12 is a schematic structural diagram of a terminal for sequence generation according to the first embodiment of the present invention.
- the terminal 30 includes a first determining module 301 and a first generating module 302.
- the first determining module 301 is configured to determine at least one first sequence according to the at least one candidate sequence, where the length of the candidate sequence is less than a sequence length corresponding to the maximum available system bandwidth.
- the first generation module 302 is connected to the first determining module 301, configured to generate or directly use the at least one first sequence connection as a second sequence, and receive the signal according to the second sequence, where the second sequence is in the reference signal sequence or the scrambling code sequence. At least one of them.
- the second sequence includes but is not limited to at least one of the following: CRS, CSI-RS, DL DM RS, DRS, PRS, SRS, MBSFN RS.
- the second sequence is mapped to a frequency band in which the terminal receives a base station signal.
- each of the at least one first sequence is a candidate sequence of at least one candidate sequence or a subsequence of one candidate sequence of at least one candidate sequence, and the subsequence is part of the candidate sequence .
- the candidate sequence includes at least two candidate sequences
- the two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different, and at least two first sequences are different
- the corresponding candidate sequences or subsequences are the same or different.
- the candidate sequence may be generated according to a predefined length or a base station configured or terminal selected length.
- the case of the base station configuration is that the base station controls the length of the candidate sequence, as used in a cellular network.
- the case of the length selected by the terminal is the length of the terminal control candidate sequence, as used in the direct connection between the terminal and the terminal.
- the length of the candidate sequence may be selected to be close to the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal, or the length of the candidate sequence may be selected to be the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal.
- the sub-bandwidth corresponds to a similar length
- the degree that is, the length of the candidate sequence is smaller than the length of the sequence corresponding to the bandwidth used by the terminal.
- the length of the candidate sequence is less than or equal to the first length threshold, where the first length threshold may be a sequence length corresponding to the total used bandwidth of the serving base station or the serving cell including the bandwidth served by the terminal.
- the first length threshold may be a pilot sequence length corresponding to a 20 MHz or 100 MHz or 1000 MHz system bandwidth.
- the lengths of different candidate sequences may be different, such that a sequence of lengths closer to or shorter than the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal may be selected to form a pilot sequence that the terminal can see.
- the frequency band corresponding to the at least one first sequence includes a DC subcarrier. Whether each of the first sequence has a DC subcarrier and a position of the DC subcarrier on the corresponding frequency band when being mapped to the corresponding frequency band is predefined or configured.
- the sequence elements mapped on the DC subcarriers are not transmitted, or the sequence elements are not mapped on the DC subcarriers. Therefore, it is possible to flexibly configure which frequency bands include DC subcarriers, and the frequency bands including DC subcarriers can be used for terminal access.
- the first determining module 301 is further configured to obtain a sequence number, and the sequence number is used to generate an initialization state value of the sequence generator. At least one candidate sequence is generated using the sequence number.
- the first determining module 301 obtains the sequence number according to the configuration of the preset or receiving base station or according to the identifier corresponding to the terminal.
- the first determining module 301 detects an access pilot for the frequency band to be accessed; and acquires at least one other frequency band other than the frequency band for access according to the detection result of the access pilot.
- a sequence number, or, according to the access pilot receiving control signaling, the control signaling includes pilot sequence configuration information on at least one other frequency band other than the used frequency band, and is obtained according to the pilot sequence configuration information.
- the sequence number of at least one other frequency band other than the frequency band, wherein the pilot sequence configuration information includes a sequence number of at least one other frequency band other than the frequency band for access.
- the terminal receives control signaling sent by the base station, where the control signaling includes at least one sequence number information and/or composition mode information of the second sequence. And obtaining, by the first determining module 301, the sequence number of the at least one other frequency band other than the frequency band that is used for accessing, according to the detection result of the access pilot, the first determining module 301, according to the sequence of the at least one other frequency band carried by the access pilot.
- the configuration information and/or the sequence relationship or the band position relationship of the frequency band used for access with at least one other frequency band determines the sequence number of at least one other frequency band.
- the sequence relationship between the frequency band used for access and at least one other frequency band may be predefined, such as a frequency band used for access.
- the position in the two sequences is a recursive relationship, such as a step size of 1, 2, 3, and the like.
- the first determining module 301 When the first determining module 301 generates at least one candidate sequence by using the sequence number, the first determining module 301 generates a corresponding number of candidate sequences according to the at least one sequence number; or generates a candidate sequence according to a sequence number, and according to the sequence number The relative positions of the generated at least one candidate sequence generate other candidate sequences.
- the manner of generating the candidate sequence in the present invention may be controlled by the base station, and the selection of the manner of generating the candidate sequence as described above may be controlled by the base station.
- the sequence number is an absolute number or a relative number.
- the absolute number is the absolute frequency domain position number, or the relative number is the relative frequency domain position number.
- Each number in the absolute frequency domain position number corresponds to an absolute position frequency band or absolute frequency point - for example, the absolute frequency domain number can be equal to % ⁇ , where " ⁇ " is rounded up and Lx" is rounded down.
- N is
- the relative frequency domain position number is a number based on the position of the frequency band of the candidate sequence relative to the first frequency band.
- the first frequency band is the frequency band when the terminal accesses the system, and the frequency band is divided into C MHz units on both sides of the first frequency band, and the numbers are respectively -1, -2, -3 in the first frequency band in the order of the first frequency band. , in the order of the first frequency band to the right, numbered 1, 2, 3....
- Each sequence can be generated from the initialization status values of the independent sequence generator.
- the initialization status value is determined by the sequence number.
- the first determining module 301 uses the sequence number to generate an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- c imt 2 10 ⁇ (? ⁇ ( 3 ⁇ 4 +1)+/ + 1) ⁇ (2 ⁇ A + ⁇ )+2 ⁇ A + N CP , or
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. N CP is 0 when the CP is extended; the first determining module 301 generates a candidate sequence according to the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include at least one of a sequence length, a sequence number, or a transmit power.
- the parameters of each first sequence are predefined or configured by the base station to the terminal.
- the parameters of the first candidate sequence can be from It is selected from two less specific parameter values; it can also be configured by broadcast signaling; or configured by multicast signaling; or configured by user-specific (UE-specific) signaling.
- the transmit power is constant in the time domain or the frequency domain or the time-frequency domain, so that the gain of the frequency domain ICIC can be obtained, and the interference of the second sequence, that is, the pilot sequence, to the neighboring cell is reduced.
- the first connection generating module is further configured to connect the at least two first sequences to generate the second sequence.
- the first connection generating module is further configured to determine at least one third sequence, where the third sequence is a predefined sequence or a sequence determined according to the pre-configured identifier, and connects at least one first sequence and at least one third Sequence, resulting in a second sequence.
- the third sequence can be a sequence for access.
- the pre-configured identifier can be a pre-configured sequence segment number or cell identifier.
- the terminal 30 further includes a first measurement module 303, configured to perform measurement according to a first sequence in the at least one first sequence, or according to a subsequence of a first sequence in the at least one first sequence.
- the measurement such as measuring the channel quality corresponding to the frequency band in which the first sequence is located.
- whether the measurement based on the first sequence can be measured based on more than one sequence segment is determined by a predefined or base station configuration manner. In this way, different sequences can be flexibly used for measurement, and different frequency bands corresponding to different sequences can be used for different measurement purposes.
- the first determining module 301 determines at least one first sequence according to the at least one candidate sequence, where the length of the candidate sequence is smaller than the sequence length corresponding to the maximum available system bandwidth; the first generating module 302 connects the at least one first sequence. Generating or directly as the second sequence, and receiving the signal according to the second sequence, the second sequence being at least one of the reference signal sequence or the scrambling sequence, so that the terminal can connect by generating only a few or even a short sequence.
- the sequence generation efficiency is high, the complexity is low, the energy consumption is low, and at the same time, a large number of operations required in generating a sequence according to the maximum system bandwidth in the prior art can be avoided, thereby Can save computing resources.
- FIG. 13 is a schematic structural diagram of a base station for sequence generation according to the first embodiment of the present invention.
- the base station 31 includes a second determining module 311 and a second generating module 312.
- the second determining module 311 is configured to determine, according to the at least one candidate sequence, the at least one first sequence, where the length of the candidate sequence is less than a sequence length corresponding to the maximum available system bandwidth.
- the second generation module 312 is connected to the second determining module 311, configured to generate or directly use the at least one first sequence connection as a second sequence, and send a signal according to the second sequence, where the second sequence is a reference signal sequence or a scrambling code sequence. At least one of the columns.
- the second sequence includes but is not limited to at least one of the following: CRS, CSI-RS, DL DM RS, DRS, PRS, SRS, MBSFN RS.
- each of the at least one first sequence is a candidate sequence of at least one candidate sequence or a subsequence of one candidate sequence of at least one candidate sequence, and the subsequence is part of the candidate sequence .
- the candidate sequence includes at least two candidate sequences
- the two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different, and at least two first sequences are different
- the corresponding candidate sequences or subsequences are the same or different.
- the candidate sequence may be generated according to a predefined length or a length selected by the base station or configured by the network control node, wherein the base station selects the case where the base station controls the length of the candidate sequence, as used in a cellular network.
- the case of the network control node configuration is that the network node controls the length of the candidate sequence, as used in the wireless core network.
- the second generation module 312 also transmits the preset length to the terminal.
- the length of the candidate sequence may be selected to be close to the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal, or the length of the candidate sequence may be selected to be the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal.
- the sub-bandwidth corresponds to a close length, that is, the length of the candidate sequence is smaller than the length of the sequence corresponding to the terminal use bandwidth.
- the length of the candidate sequence may also be less than the length of the sequence corresponding to the bandwidth used by the base station.
- the length of the candidate sequence is less than or equal to the first length threshold.
- the first length threshold may be a pilot sequence length corresponding to a 20 MHz or 100 MHz or 1000 MHz system bandwidth.
- the lengths of different candidate sequences may be different, such that a sequence of lengths closer to or shorter than the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal may be selected to form a pilot sequence that the base station can see.
- the frequency band corresponding to the at least one first sequence includes a DC subcarrier. Whether each of the first sequence has a DC subcarrier and a position of the DC subcarrier on the corresponding frequency band when mapping to the corresponding frequency band is predefined or the base station is configured to the terminal.
- the sequence elements mapped on the DC subcarriers are not transmitted, or the sequence elements are not mapped on the DC subcarriers. Therefore, it is possible to flexibly configure which frequency bands include DC subcarriers, and the frequency bands including DC subcarriers can be used for terminal access.
- the second determining module 311 is further configured to obtain a sequence number, where the sequence number is used to generate an initialization state value of the sequence generator, and generate at least one candidate sequence by using the sequence number.
- the second determining module 311 obtains the sequence number according to the preset or the base station selection or according to the identifier corresponding to the base station, and sends the preset sequence number to the terminal.
- the second determining module 311 determines an access pilot for the frequency band to be accessed, and determines at least according to a sequence relationship of the frequency band used for access and at least one other frequency band or a frequency band position relationship. The serial number of one of the other bands.
- the sequence relationship between the frequency band used for access and the at least one other frequency band may be predefined. For example, the sequence segment number of the frequency band used for access and the sequence segment number of the sequence of at least one other frequency band are added according to the frequency band position. Relationships, such as stepping up steps 1, 2, 3, etc.
- the base station 31 further includes a transmission module 313, and is connected to the second determining module 311, and is configured to transmit, to the terminal, an access pilot that carries sequence configuration information of at least one other frequency band, so that the terminal according to the connection The information carried by the pilot is used to obtain sequence configuration information of at least one other frequency band.
- the transmission module 313 is further configured to indicate to the terminal, by using control signaling, pilot sequence configuration information on at least one other frequency band other than the frequency band used for access. Therefore, the base station can separately configure the sequence of the used sequences for the terminals using different frequency bands, and respectively send corresponding sequences on the corresponding frequency bands, and the sequences of the different frequency bands can be uncorrelated at this time, thereby increasing the flexibility of the sequence use.
- the terminal may be a traditional terminal. In this case, the traditional sequence may be used on the frequency band corresponding to the traditional terminal, and the base station may use other sequences to serve other terminals according to the sequence generated by the present invention.
- the second determining module 311 When the second determining module 311 generates at least one candidate sequence according to the sequence number, the second determining module 311 generates a corresponding number of candidate sequences according to the at least one sequence number. Alternatively, the second determining module 311 generates a candidate sequence based on a sequence number and generates other candidate sequences based on the relative positions of the at least one candidate sequence generated by the sequence number.
- the manner of generating the candidate sequence in the present invention may be controlled by the base station, and the selection of the manner of generating the candidate sequence as described above may be controlled by the base station.
- Each candidate sequence is generated independently.
- Each candidate sequence may be mapped in such a manner that the center of the transmission bandwidth is extended to both sides; or each candidate sequence may be mapped in such a manner that one edge of the transmission bandwidth is extended to the other edge defense line, including the left edge to the right edge. , or the right edge expands to the left edge.
- the two sequences can be different.
- the sequence number is an absolute number or a relative number.
- the absolute number is the absolute frequency domain position number
- the relative number is the relative frequency domain position number.
- Each of the absolute frequency domain position numbers corresponds to an absolute position of the frequency band or absolute frequency point - such as absolute ⁇ F ⁇ F
- the frequency domain number can be equal to % ⁇ or % ⁇ , where " ⁇ " is rounded up and Lx" is rounded down.
- N is a positive integer.
- the relative frequency domain position number is a number based on the position of the frequency band of the candidate sequence relative to the first frequency band.
- the first frequency band is the frequency band when the terminal accesses the system, and the frequency band is divided into C MHz units on both sides of the first frequency band, and the numbers are respectively -1, -2, -3 in the first frequency band in the order of the first frequency band. , in the order of the first frequency band to the right, numbered 1, 2, 3....
- Each sequence can be generated from the initialization status values of the independent sequence generator.
- the initialization status value is determined by the sequence number.
- the second determining module 311 uses the sequence number to generate an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- Cinit 2 10 '(7.( ns + l) + l + l).(2.N q + l) + 2'N q + N CP
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. N CP is 0 when the CP is extended; the second determining module 311 generates a candidate sequence according to the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include at least one of a sequence length, a sequence number, or a transmit power.
- the parameters of each of the first sequences are predefined or configured by the base station to the terminal.
- the parameters of the first candidate sequence may be selected from at least two specific parameter values; may also be configured by broadcast signaling; or configured by multicast signaling; or by user-specific (UE-specific) signaling. Configuration.
- the transmit power is constant in the time or frequency domain or the time-frequency domain, so that the gain of the frequency domain ICIC can be obtained, and the interference of the second sequence, that is, the pilot sequence, to the neighboring cell is reduced.
- the second determining module 311 may connect at least two first sequences to generate a second sequence.
- the second determining module 311 may determine at least one third sequence, where the third sequence is a predefined sequence or a sequence determined according to the pre-configured identifier, and connects at least one first sequence and at least one third sequence, to obtain a Two sequences.
- the third sequence can be a sequence for access.
- the pre-configured identifier can be a pre-configured sequence segment number or a cell marker
- the base station 31 further includes a receiving module 314, configured to receive a measurement result of the terminal, where the measurement result is a result of the measurement by the terminal according to a first sequence in the at least one first sequence, or the terminal is according to the at least one first sequence.
- the result of the measurement of a subsequence of the first sequence such as the result of measuring the channel quality corresponding to the frequency band in which the first sequence is located.
- the terminal determines, by using a predefined or base station configuration, whether the measurement based on the first sequence can be measured based on more than one sequence segment. In this way, different sequences can be flexibly used for measurement, and different frequency bands corresponding to different sequences can be used for different measurement purposes.
- both the base station and the terminal may use the connection mode or directly as the actual used sequence on the basis of only generating a few or even one short sequence, and do not need to serve the terminal according to the inclusion of the serving base station or the serving cell.
- the terminal may only know its access bandwidth and/or the service when the network serves it.
- the bandwidth is not known by the eNB.
- the sequence generation efficiency of the terminal is low, the complexity is high, the computing resources are wasted, and the energy consumption is high.
- the beneficial effects of the present invention are particularly obvious when the service bandwidth of the terminal is much smaller than the total used bandwidth or the maximum system bandwidth of the serving base station or the serving cell, and the terminal does not know the total used bandwidth or the maximum system bandwidth of the serving base station or the serving cell:
- the sequence generation efficiency is high, the complexity is low, the energy consumption is low, and a large number of operations required to generate a sequence according to the maximum system bandwidth can be avoided, thereby saving computational resources.
- the flexibility of mapping to sequences of different frequency bands is increased, so that it is possible to flexibly adapt to the manner in which various terminals and base stations use frequency bands.
- FIG. 14 is a schematic diagram showing the structure of a terminal for sequence generation according to a second embodiment of the present invention.
- the terminal 40 includes: a processor 401, a transceiver 402, a memory 403, and a data bus 404.
- the processor 401, the transceiver 402, and the memory 403 are connected by a data bus 404 for communicating with each other.
- the processor 401 determines at least one first sequence according to the at least one candidate sequence, where the length of the candidate sequence is smaller than the sequence length corresponding to the maximum available system bandwidth; and is generated according to the at least one first sequence connection or directly as the second sequence.
- a sequence, and receiving a signal according to the second sequence, the second sequence being at least one of a reference signal sequence or a scrambling sequence.
- the second sequence includes However, it is not limited to at least one of the following: CRS, CSI-RS, DL DM RS, DRS, PRS, SRS, MBSFN RS. Mapping the second sequence to a frequency band in which the terminal receives a base station signal.
- each of the at least one first sequence is a candidate sequence of at least one candidate sequence or a subsequence of one candidate sequence of at least one candidate sequence, and the subsequence is part of the candidate sequence .
- the candidate sequence includes at least two candidate sequences
- the two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different, and at least two first sequences are different
- the corresponding candidate sequences or subsequences are the same or different.
- the candidate sequence may be generated according to a predefined length or a base station configured or terminal selected length.
- the case of the base station configuration is that the base station controls the length of the candidate sequence, as used in a cellular network.
- the case of the length of the terminal selection is the length of the terminal control candidate sequence, as used in the direct connection between the terminal and the terminal.
- the length of the candidate sequence may be selected to be close to the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal, or the length of the candidate sequence may be selected to be the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal.
- the sub-bandwidth corresponds to a close length, that is, the length of the candidate sequence is smaller than the length of the sequence corresponding to the terminal use bandwidth.
- the length of the candidate sequence is less than or equal to the first length threshold, where the first length threshold may be a sequence length corresponding to the total used bandwidth of the serving base station or the serving cell including the bandwidth served by the terminal.
- the first length threshold may be a pilot sequence length corresponding to a 20 MHz or 100 MHz or 1000 MHz system bandwidth.
- the lengths of different candidate sequences may be different, so that a sequence of access lengths closer to or shorter than the terminal and/or a service bandwidth of the network to the terminal may be selected to form a pilot sequence that the terminal can see.
- the transceiver 402 receives the first length threshold of the candidate sequence configured on the base station side transmitted by the base station side.
- Memory 403 stores the first length threshold of the candidate sequence.
- the frequency band corresponding to the at least one first sequence includes a DC subcarrier. Whether each of the first sequence has a DC subcarrier and a position of the DC subcarrier on the corresponding frequency band when being mapped to the corresponding frequency band is predefined or configured.
- the sequence elements mapped on the DC subcarriers are not transmitted, or the sequence elements are not mapped on the DC subcarriers. Therefore, it is possible to flexibly configure which frequency bands include DC subcarriers, and the frequency bands including DC subcarriers can be used for terminal access.
- the processor 401 obtains a sequence number, which is used to generate an initialization state value of the sequence generator, and generates at least one candidate sequence by using the sequence number.
- the processor 401 acquires a sequence according to the configuration of the preset or receiving base station or according to the identifier corresponding to the terminal. number.
- the processor 401 When the processor 401 obtains the sequence number, the processor 401 detects an access pilot for the frequency band to be accessed; and acquires a sequence number of at least one other frequency band other than the frequency band for access according to the detection result of the access pilot, or According to the access pilot receiving control signaling, the control signaling includes pilot sequence configuration information on at least one other frequency band other than the frequency band used for access, and acquiring the information other than the frequency band for access according to the pilot sequence configuration information. a sequence number of at least one other frequency band, where the pilot sequence configuration information includes a sequence number of at least one other frequency band other than the frequency band used for access, or a control signaling sent by the receiving base station, where the control signaling includes at least one sequence The number information and/or the composition information of the second sequence.
- the sequence number of the at least one other frequency band other than the frequency band that the processor 401 acquires according to the detection result of the access pilot includes: sequence configuration information of the at least one other frequency band carried by the processor 401 according to the access pilot and/or
- the sequence relationship of the frequency band used for access and the at least one other frequency band or the positional relationship of the frequency band determines the sequence number of at least one other frequency band.
- the sequence relationship between the frequency band used for access and the at least one other frequency band may be predefined, for example, the sequence segment number of the frequency band used for access and the sequence segment number of the sequence of at least one other frequency band are according to the sequence segment in the second
- the position in the sequence is a recursive relationship, such as a step size of 1, 2, 3, and so on.
- the processor 401 When the processor 401 generates at least one candidate sequence by using the sequence number, the processor 401 generates a corresponding number of candidate sequences according to the at least one sequence number; or generates a candidate sequence according to a sequence number, and according to the at least one generated by the sequence number The relative positions of one candidate sequence generate other candidate sequences.
- the manner of generating the candidate sequence in the present invention may be controlled by the base station, and the selection of the manner of generating the candidate sequence as described above may be controlled by the base station.
- the sequence number is an absolute number or a relative number.
- the absolute number is the absolute frequency domain position number, or the relative number is the relative frequency domain position number.
- Each number in the absolute frequency domain position number corresponds to an absolute position frequency band or absolute frequency point - for example, the absolute frequency domain number may be equal to % ⁇ , where " ⁇ " is rounded up, and Lx" is rounded down.
- N is
- the relative frequency domain position number is a number according to the position of the frequency band of the candidate sequence relative to the first frequency band.
- the first frequency band is the frequency band when the terminal accesses the system, and the frequency band is divided into C MHz units on both sides of the first frequency band, and the numbers are respectively -1, -2, -3 in the first frequency band in the order of the first frequency band. , In the order of the first frequency band, they are numbered 1, 2, 3, ..., respectively.
- Each sequence can be generated from the initialization status values of the independent sequence generator.
- the initialization status value is determined by the sequence number.
- the processor 401 uses the sequence number to generate an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- Ciait 2 l0 -(7-(n s + l) + l + l)-(2- ⁇ + l) + 2- ⁇ + ⁇ CP , or
- c imt 2 10 ⁇ (? ⁇ ( 3 ⁇ 4 +1)+/ + 1) ⁇ (2 ⁇ A + ⁇ )+2 ⁇ A + N CP , or
- c mit is an initialization state value of a sequence generator corresponding to at least one candidate sequence, which is a slot number, 1 is an OFDM symbol number in a slot, is a sequence number, is a cell number, and N CP is 1 in a normal CP. N CP is 0 when the CP is extended; the processor 401 generates a candidate sequence based on the initialization state value.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include at least one of a sequence length, a sequence number, or a transmit power.
- the parameters of each of the first sequences are predefined or configured by the base station to the terminal.
- the parameters of the first candidate sequence may be selected from at least two specific parameter values; may also be configured by broadcast signaling; or configured by multicast signaling; or by user-specific (UE-specific) signaling. Configuration.
- the transmit power is constant in the time or frequency domain or the time-frequency domain, so that the gain of the frequency domain ICIC can be obtained, and the interference of the second sequence, that is, the pilot sequence, to the neighboring cell is reduced.
- the processor 401 may connect at least two first sequences to generate a second sequence.
- the processor 401 may further determine at least one third sequence, where the third sequence is a predefined sequence or a sequence determined according to the pre-configured identifier, and connects at least one first sequence and at least one third sequence to obtain a second sequence.
- the third sequence can be a sequence for access.
- the pre-configured identifier may be a pre-configured sequence segment number or a cell identifier.
- the processor 401 is further configured to perform measurement according to a first sequence in the at least one first sequence, or to perform measurement according to a subsequence of a first sequence in the at least one first sequence, such as measuring channel quality corresponding to a frequency band in which the first sequence is located .
- whether the measurement based on the first sequence can be measured based on more than one sequence segment is determined by a predefined or base station configuration. In this way, different sequences can be flexibly used for measurement, and different frequency bands corresponding to different sequences can be used for different measurement purposes.
- the processor 401 determines at least one according to at least one candidate sequence. a first sequence, the length of the candidate sequence is less than the sequence length corresponding to the maximum available system bandwidth; and the at least one first sequence is connected to generate or directly as the second sequence, and the signal is received according to the second sequence, and the second sequence is a reference signal sequence or At least one of the scrambling code sequences, the terminal can be connected by means of only a few or even a short sequence or directly as the actually used sequence, that is, the second sequence, the sequence generation efficiency is high, the complexity is low, and the consumption is low. The performance can be low, and at the same time, a large number of operations that need to be performed when generating a sequence according to the maximum system bandwidth in the prior art can be avoided, thereby saving computational resources.
- FIG. 15 is a schematic structural diagram of a base station for sequence generation according to a second embodiment of the present invention.
- the base station 41 includes: a processor 411, a transceiver 412, a memory 413, and a data bus 414.
- the processor 411, the transceiver 412, and the memory 413 are connected by a data bus 414 for communicating with each other.
- the processor 411 determines at least one first sequence according to the at least one candidate sequence, where the length of the candidate sequence is less than the sequence length corresponding to the maximum available system bandwidth; and the at least one first sequence is connected to generate or directly as the second sequence. a sequence, and transmitting a signal according to the second sequence, the second sequence being at least one of a reference signal sequence or a scrambling sequence.
- the second sequence includes, but is not limited to, at least one of the following: CRS, CSI-RS, DL DM RS, DRS, PRS, SRS, MBSFN RS.
- each of the at least one first sequence is a candidate sequence of at least one candidate sequence or a subsequence of one candidate sequence of at least one candidate sequence, and the subsequence is part of the candidate sequence .
- the candidate sequence includes at least two candidate sequences
- the two candidate sequences are different, or when the first sequence includes at least two first sequences, at least two of the first sequences are different, and at least two first sequences are different
- the corresponding candidate sequences or subsequences are the same or different.
- the candidate sequence may be generated according to a predefined length or a length selected by the base station or configured by the network control node, wherein the base station selects the case where the base station controls the length of the candidate sequence, as used in a cellular network.
- the case of the network control node configuration is that the network node controls the length of the candidate sequence, as used in the wireless core network.
- the transceiver 412 also sends a preset length threshold to the terminal.
- the length of the candidate sequence may be selected to be close to the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal, or the length of the candidate sequence may be selected to be the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal.
- the close length that is, the length of the candidate sequence is smaller than the length of the sequence corresponding to the bandwidth used by the terminal.
- the length of the candidate sequence may also be less than the length of the sequence corresponding to the bandwidth used by the base station.
- the length of the candidate sequence is less than or equal to the first length threshold.
- the first length threshold may be a pilot sequence length corresponding to a 20 MHz or 100 MHz or 1000 MHz system bandwidth.
- the memory 413 stores the first length threshold.
- the lengths of different candidate sequences may be different, such that a sequence of lengths closer to or shorter than the access bandwidth of the terminal and/or the service bandwidth of the network to the terminal may be selected to form a pilot sequence that the base station can see.
- the frequency band corresponding to the at least one first sequence includes a DC subcarrier. Whether each of the first sequence has a DC subcarrier and a position of the DC subcarrier on the corresponding frequency band when mapping to the corresponding frequency band is predefined or the base station is configured to the terminal.
- the sequence elements mapped on the DC subcarriers are not transmitted, or the sequence elements are not mapped on the DC subcarriers. Therefore, it is possible to flexibly configure which frequency bands include DC subcarriers, and the frequency bands including DC subcarriers can be used for terminal access.
- the processor 411 obtains a sequence number, the sequence number is used to generate an initialization state value of the sequence generator, and generates at least one candidate sequence by using the sequence number; and generates at least one candidate sequence according to the sequence number.
- Transceiver 412 can be used to send a preset sequence number to the terminal.
- the processor 411 obtains the sequence number according to the preset or the base station selection or according to the identifier corresponding to the base station; and sends the preset sequence number to the terminal.
- the processor 411 determines an access pilot for the frequency band to be accessed; and determines at least one other frequency band according to a sequence relationship or a frequency band position relationship of the frequency band used for access and at least one other frequency band.
- Sequence number The sequence relationship between the frequency band used for access and the at least one other frequency band may be predefined. For example, the sequence segment number of the frequency band used for access and the sequence segment number of the sequence of at least one other frequency band are added according to the frequency band position. Relationships, such as stepping up steps 1, 2, 3, etc.
- the transceiver 412 further transmits, to the terminal, an access pilot that carries sequence configuration information of at least one other frequency band, so that the terminal obtains a sequence of at least one other frequency band according to the information carried by the access pilot. Configuration information.
- the transceiver 412 further indicates to the terminal, by control signaling, pilot sequence configuration information on at least one other frequency band other than the frequency band used for access. Therefore, the base station can separately configure the sequence of the used sequences for the terminals using different frequency bands, and respectively send corresponding sequences on the corresponding frequency bands, and the sequences of the different frequency bands can be uncorrelated at this time, thereby increasing the flexibility of the sequence use.
- the terminal may be a traditional terminal, and the traditional sequence may be used on the frequency band corresponding to the traditional terminal, and the base station may be in the
- the processor 411 generates at least one candidate sequence based on the sequence number
- the processor 411 generates a corresponding number of candidate sequences based on the at least one sequence number.
- the processor 411 generates a candidate sequence based on a sequence number and generates other candidate sequences based on the relative positions of the at least one candidate sequence generated by the sequence number.
- the manner of generating the candidate sequence in the present invention may be controlled by the base station, and the selection of the manner of generating the candidate sequence as described above may be controlled by the base station.
- Each candidate sequence is generated independently.
- Each candidate sequence may be mapped in such a manner that the center of the transmission bandwidth is extended to both sides; or each candidate sequence may be mapped in such a manner that one edge of the transmission bandwidth is extended to the other edge defense line, including the left edge to the right edge. , or the right edge expands to the left edge.
- the two sequences can be different.
- the sequence number is an absolute number or a relative number.
- the absolute number is the absolute frequency domain position number
- the relative number is the relative frequency domain position number.
- Each number in the absolute frequency domain position number corresponds to an absolute position frequency band or absolute frequency point - for example, the absolute frequency domain number can be equal to % ⁇ , where " ⁇ " is rounded up and Lx" is rounded down.
- N is a positive integer.
- the relative frequency domain position number is a number based on the position of the frequency band of the candidate sequence relative to the first frequency band.
- the first frequency band is the frequency band when the terminal accesses the system, and the frequency band is divided into C MHz units on both sides of the first frequency band, and the numbers are respectively -1, -2, -3 in the first frequency band in the order of the first frequency band. , in the order of the first frequency band to the right, numbered 1, 2, 3....
- Each sequence can be generated from the initialization status values of the independent sequence generator.
- the initialization status value is determined by the sequence number.
- the processor 411 uses the sequence number to generate an initialization state value of the sequence generator corresponding to the candidate sequence according to the following formula:
- c mit is the initialization state value of the sequence generator corresponding to at least one candidate sequence, which is the slot number, 1 is the OFDM symbol number in the slot, is the sequence number, is the cell number, and N is 1 in the normal CP.
- N dir is 0 when the CP is extended; the processor 411 is according to the initialization state The value generates a candidate sequence.
- the parameters corresponding to the at least two first sequences are the same or different, and the parameters include at least one of a sequence length, a sequence number, or a transmit power.
- the parameters of each of the first sequences are predefined or configured by the base station to the terminal.
- the parameters of the first candidate sequence may be selected from at least two specific parameter values; may also be configured by broadcast signaling; or configured by multicast signaling; or by user-specific (UE-specific) signaling. Configuration.
- the transmit power is constant in the time or frequency domain or the time-frequency domain, so that the gain of the frequency domain ICIC can be obtained, and the interference of the second sequence, that is, the pilot sequence, to the neighboring cell is reduced.
- the transceiver 412 further receives the measurement result of the terminal, where the measurement result is a result of the measurement by the terminal according to a first sequence in the at least one first sequence, or is the terminal according to the at least one first sequence.
- the result of the measurement of a subsequence of a first sequence such as the result of measuring the channel quality corresponding to the first sequence.
- the terminal determines whether the measurement based on the first sequence can be measured based on more than one sequence segment by means of predefined or base station configuration. In this way, different sequences can be flexibly used for measurement, and different frequency bands corresponding to different sequences can be used for different measurement purposes.
- the processor 411 may connect at least two first sequences to generate a second sequence.
- the processor 411 may further determine at least one third sequence, where the third sequence is a predefined sequence or a sequence determined according to the pre-configured identifier, and connects at least one first sequence and at least one third sequence to obtain a second sequence.
- the third sequence can be a sequence for access.
- the pre-configured identifier may be a pre-configured sequence segment number or a cell identifier.
- the present invention determines, by the terminal, at least one first sequence according to at least one candidate sequence, the length of the candidate sequence is less than the sequence length corresponding to the maximum available system bandwidth, and the at least one first sequence is connected or directly generated as the second sequence. And receiving the signal according to the second sequence, where the second sequence is at least one of a reference signal sequence or a scrambling code sequence, and both the terminal and the base station can be connected or directly used on the basis of generating only a few or even a short sequence.
- the actually used sequence that is, the second sequence, has high sequence generation efficiency, low complexity, low power consumption, and can avoid a large number of operations required in the prior art to generate a sequence according to the maximum system bandwidth, thereby saving computational resources.
- the flexibility of mapping to sequences of different frequency bands is increased, so that it is possible to flexibly adapt to the manner in which various terminals and base stations use frequency bands.
- the second sequence in the present invention is not limited to the reference signal sequence or the scrambling code sequence.
- the present invention has been described by taking a sequence mapping to a frequency domain as an example, but the present invention can also be applied to a scene in which a sequence is mapped to a time domain or a time-frequency domain.
- the sequence in the present invention is a downlink sequence, but may be an uplink sequence or a sequence transmitted between peer terminals.
- the sequence may be further processed, such as scrambling, etc., and then used.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201480079205.1A CN106416343B (zh) | 2014-05-23 | 2014-05-23 | 序列生成的方法和用于序列生成的终端、基站 |
| KR1020167035989A KR101876361B1 (ko) | 2014-05-23 | 2014-05-23 | 시퀀스 생성 방법과, 시퀀스 생성을 위한 단말기 및 기지국 |
| CA2949873A CA2949873A1 (en) | 2014-05-23 | 2014-05-23 | Sequence generation method, and terminal and base station for terminal for sequence generation terminal and a base station for sequence generation |
| PCT/CN2014/078246 WO2015176301A1 (zh) | 2014-05-23 | 2014-05-23 | 序列生成的方法和用于序列生成的终端、基站 |
| EP14892760.1A EP3142401B1 (en) | 2014-05-23 | 2014-05-23 | Sequence generating method and terminal and base station for sequence generation |
| JP2016569411A JP6404951B2 (ja) | 2014-05-23 | 2014-05-23 | シーケンス生成方法、ならびにシーケンス生成のための端末および基地局 |
| US15/360,815 US10177889B2 (en) | 2014-05-23 | 2016-11-23 | Sequence generation method, and terminal and base station for terminal for sequence generation terminal and a base station for sequence generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/078246 WO2015176301A1 (zh) | 2014-05-23 | 2014-05-23 | 序列生成的方法和用于序列生成的终端、基站 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15/360,815 Continuation US10177889B2 (en) | 2014-05-23 | 2016-11-23 | Sequence generation method, and terminal and base station for terminal for sequence generation terminal and a base station for sequence generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015176301A1 true WO2015176301A1 (zh) | 2015-11-26 |
Family
ID=54553252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2014/078246 Ceased WO2015176301A1 (zh) | 2014-05-23 | 2014-05-23 | 序列生成的方法和用于序列生成的终端、基站 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10177889B2 (zh) |
| EP (1) | EP3142401B1 (zh) |
| JP (1) | JP6404951B2 (zh) |
| KR (1) | KR101876361B1 (zh) |
| CN (1) | CN106416343B (zh) |
| CA (1) | CA2949873A1 (zh) |
| WO (1) | WO2015176301A1 (zh) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11304080B2 (en) * | 2015-01-21 | 2022-04-12 | Sony Corporation | Methods, base station, mobile node and relay node |
| CN107409007B (zh) * | 2015-03-03 | 2019-12-24 | 华为技术有限公司 | 用于调度终端设备的方法和网络设备 |
| CN106470096B (zh) * | 2015-08-14 | 2021-03-23 | 索尼公司 | 用于无线通信的基站侧和用户设备侧的装置及方法 |
| CN107547094B (zh) * | 2016-06-29 | 2023-08-22 | 华为技术有限公司 | 一种信号传输方法及装置 |
| US10454641B2 (en) * | 2016-11-16 | 2019-10-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Listen before talk for reference signals in MIMO systems |
| US20180367287A1 (en) * | 2017-06-16 | 2018-12-20 | Mediatek Inc. | Sounding Reference Signal And Channel State Information-Reference Signal Co-Design In Mobile Communications |
| CN108111285B (zh) * | 2017-11-17 | 2021-10-26 | 中兴通讯股份有限公司 | 一种传输参考信号的方法及装置 |
| CN110072286A (zh) * | 2018-01-23 | 2019-07-30 | 株式会社Ntt都科摩 | 用于生成参考信号序列的方法及相应的用户终端、基站 |
| CN111555848B (zh) * | 2019-02-11 | 2023-05-09 | 中国移动通信有限公司研究院 | 一种参考信号传输方法及通信设备 |
| CN112788641B (zh) * | 2019-11-07 | 2022-12-27 | 大唐联仪科技有限公司 | 一种功率控制组pcg序列位置检测方法和装置 |
| WO2022267847A1 (zh) * | 2021-06-21 | 2022-12-29 | 华为技术有限公司 | 传输序列的方法和装置 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132383A (zh) * | 2007-09-26 | 2008-02-27 | 中兴通讯股份有限公司 | 伪随机序列的生成方法 |
| CN101242219A (zh) * | 2007-02-05 | 2008-08-13 | 日本电气株式会社 | 无线通信系统中的参考信号生成方法以及装置 |
| CN102484577A (zh) * | 2009-07-13 | 2012-05-30 | 株式会社泛泰 | 用于生成在无线通信系统中使用的序列的方法及装置 |
| CN102598537A (zh) * | 2009-09-07 | 2012-07-18 | Lg电子株式会社 | 在无线通信系统中发送/接收参考信号的方法和装置 |
| CN102769592A (zh) * | 2011-05-04 | 2012-11-07 | 普天信息技术研究院有限公司 | 一种用于通信系统的上行参考信号的生成方法及装置 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2814877B1 (fr) | 2000-10-02 | 2003-01-03 | Mitsubishi Electric Inf Tech | Sequence d'estimation de canal et procede d'estimation d'un canal de transmission qui utilise une telle sequence d'estimation de canal |
| GB2394867B (en) * | 2002-11-01 | 2005-06-01 | Ipwireless Inc | Arrangement and method for sequence production in a spread spectrum communication system |
| US9155024B2 (en) | 2006-06-23 | 2015-10-06 | Panasonic Intellectual Property Corporation Of America | Radio transmitting apparatus, radio receiving apparatus, and pilot generating method |
| US8320360B2 (en) * | 2006-11-06 | 2012-11-27 | Motorola Mobility Llc | Method and apparatus for fast cell search |
| CN104052566B (zh) * | 2007-01-05 | 2017-06-16 | 三星电子株式会社 | 单载波频分多址系统中发送和接收控制信息的方法和装置 |
| DK2101419T3 (da) * | 2007-03-07 | 2011-05-16 | Huawei Tech Co Ltd | Sekvensfordeling, behandlingsfremgangsmåde samt indretning i et kommunikationssystem |
| KR20080097327A (ko) * | 2007-05-01 | 2008-11-05 | 엘지전자 주식회사 | 시퀀스 세트 구성 방법 및 이를 이용한 임의접속 방법 |
| JP5041890B2 (ja) * | 2007-06-27 | 2012-10-03 | 株式会社エヌ・ティ・ティ・ドコモ | 基地局装置及びユーザ装置並びにリファレンスシグナル系列の割り当て方法 |
| CN101766008A (zh) * | 2007-08-08 | 2010-06-30 | 松下电器产业株式会社 | 无线发送装置和无线通信方法 |
| JP5035892B2 (ja) * | 2007-08-13 | 2012-09-26 | 独立行政法人情報通信研究機構 | 無線端末、データ送信方法 |
| US7869532B2 (en) * | 2007-09-04 | 2011-01-11 | Motorola Mobility, Inc. | Cellular communication system and a method of operation therefor |
| KR101520663B1 (ko) * | 2008-02-03 | 2015-05-15 | 엘지전자 주식회사 | 레거시 지원을 위한 프리엠블 전송 방법 |
| RU2502191C1 (ru) * | 2009-09-07 | 2013-12-20 | Эл Джи Электроникс Инк. | Способ и устройство для передачи/приема опорного сигнала в системе беспроводной связи |
| WO2012026366A1 (ja) * | 2010-08-27 | 2012-03-01 | シャープ株式会社 | 送信装置、受信装置、通信システム、送信方法、受信方法、通信方法、コンピュータプログラムおよび半導体チップ |
| CN102437987B (zh) * | 2010-09-29 | 2015-09-16 | 中兴通讯股份有限公司 | 信道状态信息参考信号序列的生成和映射方法及装置 |
| CN105827382A (zh) * | 2010-09-29 | 2016-08-03 | 中兴通讯股份有限公司 | 参考信号映射方法及装置 |
| JP5970061B2 (ja) * | 2012-03-09 | 2016-08-17 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカPanasonic Intellectual Property Corporation of America | 端末装置、無線送信方法、基地局装置およびチャネル推定方法 |
| US8731124B2 (en) * | 2012-03-28 | 2014-05-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Signaling of sequence generator initialization parameters for uplink reference signal generation |
| KR20130113557A (ko) * | 2012-04-06 | 2013-10-16 | 한국전자통신연구원 | 다중 채널 추정을 위한 프리앰블 전송 방법, 수신 방법 및 그 장치 |
-
2014
- 2014-05-23 JP JP2016569411A patent/JP6404951B2/ja active Active
- 2014-05-23 EP EP14892760.1A patent/EP3142401B1/en active Active
- 2014-05-23 KR KR1020167035989A patent/KR101876361B1/ko active Active
- 2014-05-23 WO PCT/CN2014/078246 patent/WO2015176301A1/zh not_active Ceased
- 2014-05-23 CA CA2949873A patent/CA2949873A1/en not_active Abandoned
- 2014-05-23 CN CN201480079205.1A patent/CN106416343B/zh active Active
-
2016
- 2016-11-23 US US15/360,815 patent/US10177889B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242219A (zh) * | 2007-02-05 | 2008-08-13 | 日本电气株式会社 | 无线通信系统中的参考信号生成方法以及装置 |
| CN101132383A (zh) * | 2007-09-26 | 2008-02-27 | 中兴通讯股份有限公司 | 伪随机序列的生成方法 |
| CN102484577A (zh) * | 2009-07-13 | 2012-05-30 | 株式会社泛泰 | 用于生成在无线通信系统中使用的序列的方法及装置 |
| CN102598537A (zh) * | 2009-09-07 | 2012-07-18 | Lg电子株式会社 | 在无线通信系统中发送/接收参考信号的方法和装置 |
| CN102769592A (zh) * | 2011-05-04 | 2012-11-07 | 普天信息技术研究院有限公司 | 一种用于通信系统的上行参考信号的生成方法及装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170008301A (ko) | 2017-01-23 |
| KR101876361B1 (ko) | 2018-07-09 |
| JP2017522770A (ja) | 2017-08-10 |
| EP3142401B1 (en) | 2019-05-01 |
| CN106416343A (zh) | 2017-02-15 |
| JP6404951B2 (ja) | 2018-10-17 |
| EP3142401A4 (en) | 2017-05-03 |
| CA2949873A1 (en) | 2015-11-26 |
| EP3142401A1 (en) | 2017-03-15 |
| US10177889B2 (en) | 2019-01-08 |
| CN106416343B (zh) | 2020-04-28 |
| US20170078067A1 (en) | 2017-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015176301A1 (zh) | 序列生成的方法和用于序列生成的终端、基站 | |
| JP6650406B2 (ja) | 端末装置、基地局装置、通信方法、および、集積回路 | |
| KR102775331B1 (ko) | 랜덤 액세스 방법, 디바이스, 및 시스템 | |
| JP6163554B2 (ja) | 端末装置、基地局装置、および通信方法 | |
| ES2909776T3 (es) | Soporte para dispositivos de comunicaciones con ancho de banda limitado en un sistema de comunicaciones celulares | |
| JP6162244B2 (ja) | 端末装置、基地局装置、および通信方法 | |
| CN103312650B (zh) | 数据传输方法、基站和用户设备 | |
| CN108476464B (zh) | 终端装置、基站装置以及通信方法 | |
| JP6677642B2 (ja) | 端末装置、通信方法、および、集積回路 | |
| WO2016019734A1 (zh) | D2d的通信方法及装置 | |
| CN108605030A (zh) | 用户终端、无线基站和无线通信方法 | |
| JPWO2015046358A1 (ja) | 端末、基地局、および通信方法 | |
| JP6639395B2 (ja) | 端末装置、通信方法、および、集積回路 | |
| JPWO2015046054A1 (ja) | 端末、基地局、および、通信方法 | |
| CN109716825B (zh) | 用于促进随机接入的方法、网络节点和终端设备 | |
| CN108432314B (zh) | 终端装置、基站装置、通信方法以及集成电路 | |
| JPWO2015046165A1 (ja) | 端末、基地局および通信方法 | |
| WO2015176517A1 (zh) | 设备到设备的资源配置方法、网络设备及用户设备 | |
| CN113330709A (zh) | 终端设备、网络设备及其中的方法 | |
| WO2020063479A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| CN108259148B (zh) | 传输参考信号的方法和装置 | |
| WO2022152113A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| CN112867151A (zh) | 资源确定方法及设备 | |
| CN111556571A (zh) | 传输调度信息的方法和装置 | |
| CN104618985B (zh) | 设备发现信号的发送方法、装置、设备及系统 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14892760 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2949873 Country of ref document: CA |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2016569411 Country of ref document: JP Kind code of ref document: A |
|
| REEP | Request for entry into the european phase |
Ref document number: 2014892760 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2014892760 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 20167035989 Country of ref document: KR Kind code of ref document: A |