WO2019019834A1 - 一种信号处理方法、装置、设备及计算机可读存储介质 - Google Patents
一种信号处理方法、装置、设备及计算机可读存储介质 Download PDFInfo
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- WO2019019834A1 WO2019019834A1 PCT/CN2018/091551 CN2018091551W WO2019019834A1 WO 2019019834 A1 WO2019019834 A1 WO 2019019834A1 CN 2018091551 W CN2018091551 W CN 2018091551W WO 2019019834 A1 WO2019019834 A1 WO 2019019834A1
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- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- 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
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- 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
- H04L5/0091—Signaling for the administration of the divided path
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- the embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a signal processing method, apparatus, device, and computer readable storage medium.
- the synchronization signal block is transmitted by means of beam scanning, that is, different beams are formed at different times to transmit the synchronization signal block in the same or different directions.
- a sync signal block is composed of a sync signal and a physical broadcast channel portion.
- the physical broadcast channel portion includes a Physical Broadcast Channel (PBCH) and a DeModulation Reference Signal (DM RS) of the physical broadcast channel.
- PBCH Physical Broadcast Channel
- DM RS DeModulation Reference Signal
- the demodulation reference symbols in the physical broadcast channel are used for channel estimation and indicate the Synchronization Signal block (time) index (SS block (time) index).
- the DMRS of each cell has several (eg, 8) available sequences, and the different sequences respectively correspond to the sequence numbers of different sync signal blocks.
- the user uses all possible sequences to correlate the received signal or the channel-equalized signal, and the possible sequence with the largest correlation value is used as the detected sequence, and the sequence number of the corresponding synchronization signal block is used as the detected synchronization.
- the sequence number of the signal block the sequence number of which can reflect the information of the beam.
- the sequences of different cells and the sequence of the current cell are made as orthogonal as possible to improve the synchronization block and channel estimation detection accuracy.
- the location of the mapping resource is related to the cell identifier. After receiving the cell identifier, the terminal detects the CRS on all the resources mapped according to the cell identifier.
- the beam scanning mechanism is added, how to transmit DMRS to reduce the collision of PBCH DMRS is a major issue discussed by the relevant personnel.
- embodiments of the present disclosure provide a signal processing method, apparatus, device, and computer readable storage medium to reduce collision of PBCH DMRS.
- an embodiment of the present disclosure provides a signal processing method, which is applied to a network side device, and includes:
- the candidate PBCH DMRS sequence is transmitted by using an RE group corresponding to the candidate PBCH DMRS sequence.
- mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the transmitting, according to the mapping relationship, the candidate PBCH DMRS sequence by using an RE group corresponding to the candidate PBCH DMRS sequence includes:
- the modulated candidate PBCH DMRS sequence is transmitted using the RE group.
- two orthogonal frequency division multiplexing OFDM symbols of the same synchronization signal block carry the same candidate PBCH DMRS sequence
- Two orthogonal frequency division multiplexing OFDM symbols of the same synchronization signal block jointly carry the same candidate PBCH DMRS sequence.
- the initial value of the generator polynomial of the candidate PBCH DMRS sequence is determined according to the cell identifier and/or the sequence number of the synchronization signal block.
- an embodiment of the present disclosure further provides a signal processing method, which is applied to a terminal, including:
- the sequence number of the sync signal block is determined based on the detected candidate PBCH DMRS sequence.
- mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the detecting, in the group of the RE, the candidate PBCH DMRS sequence corresponding to the RE group includes:
- the candidate PBCH DMRS sequence in the candidate PBCH DMRS sequence group corresponding to the RE group is used to perform correlation detection, and the correlation value corresponding to each RE group is obtained;
- the candidate PBCH DMRS sequence corresponding to the maximum correlation value is used as the detected candidate PBCH DMRS sequence.
- an embodiment of the present disclosure further provides a signal processing apparatus, including:
- a generating module configured to generate a candidate physical broadcast channel demodulation reference symbol PBCH DMRS sequence
- An obtaining module configured to acquire a mapping relationship between a PBCH DMRS sequence and a resource unit RE group
- a transmitting module configured to transmit, by using the RE group corresponding to the candidate PBCH DMRS sequence, the candidate PBCH DMRS sequence according to the mapping relationship.
- mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the transmission module includes:
- a modulation submodule configured to modulate the candidate PBCH DMRS sequence
- mapping submodule configured to map the modulated candidate PBCH DMRS sequence to the RE group according to the mapping relationship
- a transmission submodule configured to transmit the modulated candidate PBCH DMRS sequence by using the RE group.
- two orthogonal frequency division multiplexing OFDM symbols of the same synchronization signal block carry the same candidate PBCH DMRS sequence; or two orthogonal frequency division multiplexing OFDM symbol carriers of the same synchronization signal block.
- Different candidate PBCH DMRS sequences; or two orthogonal frequency division multiplexing OFDM symbols of the same synchronization signal block jointly carrying the same candidate PBCH DMRS sequence.
- the initial value of the generator polynomial of the candidate PBCH DMRS sequence is determined according to the cell identifier and/or the sequence number of the synchronization signal block.
- an embodiment of the present disclosure further provides a signal processing apparatus, including:
- a receiving module configured to receive a candidate PBCH DMRS sequence
- a first determining module configured to determine, according to a mapping relationship between a PBCH DMRS sequence and an RE group, an RE group corresponding to the candidate PBCH DMRS sequence
- a detecting module configured to detect, in the RE group, a candidate PBCH DMRS sequence corresponding to the RE group
- a second determining module configured to determine a sequence number of the synchronization signal block according to the detected candidate PBCH DMRS sequence.
- mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the detecting module includes:
- a grouping sub-module configured to group the candidate PBCH DMRS sequences to obtain a candidate PBCH DMRS sequence group, where the number of candidate PBCH DMRS sequence groups is equal to the number of the RE groups;
- a detection submodule configured to perform correlation detection on a candidate PBCH DMRS sequence in a candidate PBCH DMRS sequence group corresponding to the RE group by using a preset PBCH DMRS sequence for each RE group, and obtain a correlation value corresponding to each RE group ;
- a determining submodule configured to use the candidate PBCH DMRS sequence corresponding to the maximum correlation value as the detected candidate PBCH DMRS sequence.
- an embodiment of the present disclosure further provides an electronic device including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; The steps in the method as described in the first aspect above are implemented when the processor executes the computer program.
- an embodiment of the present disclosure further provides an electronic device including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; The steps in the method as described in the second aspect above are implemented when the processor executes the computer program.
- an embodiment of the present disclosure is a computer readable storage medium for storing a computer program, wherein the computer program is executed by a processor to implement the method of the first aspect as described above step.
- an embodiment of the present disclosure is a computer readable storage medium for storing a computer program, wherein the computer program is executed by a processor to implement the method as described in the second aspect above step.
- the neighboring cells can be reasonably planned such that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- FIG. 1 is a flowchart of a signal processing method according to an embodiment of the present disclosure
- FIG. 2 is a flowchart of a signal processing method according to an embodiment of the present disclosure
- FIG. 3 is a flowchart of a signal processing method according to an embodiment of the present disclosure
- FIG. 5 is a schematic diagram of a signal processing apparatus according to an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of a transmission module according to an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of a signal processing apparatus according to an embodiment of the present disclosure.
- FIG. 8 is a schematic diagram of a detection module according to an embodiment of the present disclosure.
- FIG. 9 is a schematic diagram of a network side device according to an embodiment of the present disclosure.
- FIG. 10 is a schematic diagram of a terminal provided by an embodiment of the present disclosure.
- the signal processing method of the embodiment of the present disclosure is applied to a network side device, and includes:
- Step 101 Generate a candidate PBCH DMRS sequence.
- the network side device may be a base station or the like.
- On the base station side in general, there are 8 available PBCH DMRS sequences, and any one of the 8 sequences may be referred to as a Candidate PBCH DMRS sequence.
- a candidate PBCH DMRS sequence for example, a Gold sequence or the like can be generated in a manner related to the related art.
- Step 102 Obtain a mapping relationship between a PBCH DMRS sequence and an RE (Resource Element) group.
- the mapping relationship may be agreed in advance.
- the mapping relationship includes: mapping relationship between candidate PBCH DMRS sequences of different cells and different RE groups; or mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell; or different cell groups The mapping relationship between the candidate PBCH DMRS sequence and different RE groups; the mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- Step 103 Transmit the candidate PBCH DMRS sequence by using an RE group corresponding to the candidate PBCH DMRS sequence according to the mapping relationship.
- the candidate PBCH DMRS sequence is modulated, and the modulated candidate PBCH DMRS sequence is mapped to the RE group according to the mapping relationship, and the modulated candidate PBCH DMRS is transmitted by using the RE group. sequence.
- the modulation mode may be BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), 16QAM (16 Quadrature Amplitude Modulation, 16 orthogonal Amplitude and phase modulation), 64QAM (64 Quadrature Amplitude Modulation), 256QAM (256 Quadrature Amplitude Modulation), etc.
- BPSK Binary Phase Shift Keying
- QPSK Quadrature Phase Shift Keying
- 16QAM (16 Quadrature Amplitude Modulation, 16 orthogonal Amplitude and phase modulation
- 64QAM 64 Quadrature Amplitude Modulation
- 256QAM 256 Quadrature Amplitude Modulation
- two OFDM (Orthogonal Frequency Division Multiplexing) symbols of the same synchronization signal block carry the same candidate PBCH DMRS sequence; or two OFDM symbols of the same synchronization signal block carry different candidate PBCHs.
- the generator polynomial refers to the polynomial used in generating the PBCH DMRS sequence.
- the initial value of the generator polynomial of the candidate PBCH DMRS sequence is determined according to the cell identifier and/or the sequence number of the synchronization signal block.
- the neighboring cells can be reasonably planned so that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- the signal processing method of the embodiment of the present disclosure is applied to a terminal, including:
- Step 201 Receive a candidate PBCH DMRS sequence.
- Step 202 Determine, according to the mapping relationship between the PBCH DMRS sequence and the RE group, the RE group corresponding to the candidate PBCH DMRS sequence.
- the mapping relationship includes: mapping relationship between candidate PBCH DMRS sequences of different cells and different RE groups; or mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell; or different The mapping relationship between the candidate PBCH DMRS sequence of the cell group and the different RE groups; the mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the terminal may acquire the mapping relationship according to a prior agreement with the network side or according to a notification on the network side.
- Step 203 In the RE group, detect a candidate PBCH DMRS sequence corresponding to the RE group.
- the candidate PBCH DMRS sequences are grouped to obtain a candidate PBCH DMRS sequence group, and the number of candidate PBCH DMRS sequence groups is equal to the number of the RE groups.
- the correlation PBCH DMRS sequence in the candidate PBCH DMRS sequence group corresponding to the RE group is used to perform correlation detection, and the correlation value corresponding to each RE group is obtained.
- a maximum correlation value is obtained from a plurality of correlation values of all RE groups, and a candidate PBCH DMRS sequence corresponding to the maximum correlation value is used as the detected candidate PBCH DMRS sequence.
- each cell has 8 candidate PBCH DMRS sequences.
- the 8 candidate PBCH DMRS sequences are grouped into 4 groups of two PBCH DMRS sequences each.
- each of the RE groups is separately correlated with the candidate PBCH DMRS sequences in each RE group by using two preset PBCH DMRS sequences, and two correlation values are obtained.
- eight correlation values were obtained.
- the candidate PBCH DMRS sequence corresponding to the largest correlation value among the eight correlation values is the detected DMRS sequence.
- Step 204 Determine a sequence number of the synchronization signal block according to the detected candidate PBCH DMRS sequence.
- the neighboring cells can be reasonably planned so that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- the signal processing method of the embodiment of the present disclosure includes:
- Step 301 Generate all candidate PBCH DMRS sequences, and generate a candidate PBCH DMRS sequence as a Gold sequence.
- the generated candidate PBCH DMRS sequence is a Gold sequence.
- the Gold sequence can be a complete Gold sequence in one cycle, or a sequence taken from a period Gold sequence.
- the initial value of the generator polynomial of the Gold sequence is related to the cell identifier and/or the sync block (time) sequence number.
- Step 302 Modulate the generated Gold sequence.
- the modulation mode may be BPSK, QPSK, 16QAM, 64QAM, 256QAM, or the like.
- Step 303 Obtain a mapping relationship between the PBCH DMRS sequence and the RE group.
- the mapping relationship between the PBCH DMRS sequence and the resource unit RE group is the correspondence between the modulated Gold sequence and the RE group.
- Step 304 Map the modulated Gold sequence to the corresponding RE group, and use the RE group to transmit the corresponding Gold sequence.
- two OFDM (Orthogonal Frequency Division Multiplexing) symbols are used to transmit a PBCH part in one synchronization signal block, and the PBCH DMRS in two symbols can carry two identical Gold sequences. , or can carry two different Gold sequences, or two symbols together bear the same Gold sequence.
- the neighboring cells can be reasonably planned so that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- the candidate PBCH DMRS sequence of each cell is divided into several groups, and each group of candidate PBCH DMRS sequences are respectively transmitted on different RE groups, so that the sequence numbers of different synchronization signal blocks or different cells are corresponding.
- the PBCH DMRS sequence is mapped to a different RE group for transmission.
- the number of candidate sequences to be detected is reduced, thereby improving detection accuracy and reducing detection complexity.
- the signal processing method of the embodiment of the present disclosure includes:
- Step 401 the generated Gold sequence.
- x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod 2
- x 2 (n) The initial value of x 2 (n) is Determined, where c init , x 2 (i) is a constant; Nc is a constant and is a positive integer, for example, the value may be 1600.
- NR cell ID cell identifier
- Step 402 Modulate the generated Gold sequence c(n).
- Step 403 Map the modulated symbols onto the RE group, and transmit the modulated symbols by using the RE group.
- d(n) is transmitted on the m+4n subcarrier, ie
- d(n+72) is transmitted on the m+4n subcarrier, ie
- the neighboring cells can be reasonably planned so that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- the signal processing apparatus of the embodiment of the present disclosure includes:
- a generating module 601 configured to generate a candidate physical broadcast channel demodulation reference symbol PBCH DMRS sequence
- an obtaining module 602 configured to acquire a mapping relationship between a PBCH DMRS sequence and a resource unit RE group
- a transmitting module 603, configured to: according to the mapping relationship,
- the candidate PBCH DMRS sequence is transmitted using an RE group corresponding to the candidate PBCH DMRS sequence.
- the mapping relationship includes: a mapping relationship between a candidate PBCH DMRS sequence of different cells and different RE groups; or a mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell; or different cell groups
- the transmission module 603 includes:
- the modulation sub-module 6031 is configured to modulate the candidate PBCH DMRS sequence
- the mapping sub-module 6032 is configured to map the modulated candidate PBCH DMRS sequence to the RE group according to the mapping relationship
- the transmission sub-module 6033 The modulated candidate PBCH DMRS sequence is transmitted using the RE group.
- two OFDM symbols of the same synchronization signal block carry the same candidate PBCH DMRS sequence; or two OFDM symbols of the same synchronization signal block carry different candidate PBCH DMRS sequences; or two of the same synchronization signal block.
- the OFDM symbols collectively carry the same candidate PBCH DMRS sequence.
- the initial value of the generator polynomial of the candidate PBCH DMRS sequence is determined according to the cell identifier and/or the sequence number of the synchronization signal block.
- the neighboring cells can be reasonably planned so that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- the signal processing apparatus of the embodiment of the present disclosure includes:
- the receiving module 801 is configured to receive a candidate PBCH DMRS sequence
- the first determining module 802 is configured to determine, according to the mapping relationship between the PBCH DMRS sequence and the RE group, the RE group corresponding to the candidate PBCH DMRS sequence, and the detecting module 803, configured to In the RE group, the candidate PBCH DMRS sequence corresponding to the RE group is detected; and the second determining module 804 is configured to determine a sequence number of the synchronization signal block according to the detected candidate PBCH DMRS sequence.
- the mapping relationship includes: a mapping relationship between a candidate PBCH DMRS sequence of different cells and different RE groups; or a mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell; or different cell groups
- the detecting module 803 includes:
- a packet sub-module 8031 configured to group the candidate PBCH DMRS sequences to obtain a candidate PBCH DMRS sequence group, the number of candidate PBCH DMRS sequence groups is equal to the number of the RE groups; and the detecting sub-module 8032 is configured for each Correlation detection is performed by using the preset PBCH DMRS sequence and the candidate PBCH DMRS sequence in the candidate PBCH DMRS sequence group corresponding to the RE group, and the correlation value corresponding to each RE group is obtained; the obtaining submodule 8033 is used for Obtaining a maximum correlation value from a plurality of correlation values of all RE groups; and determining a sub-module 8034 for using the candidate PBCH DMRS sequence corresponding to the maximum correlation value as the detected candidate PBCH DMRS sequence.
- the neighboring cells can be reasonably planned so that the beams pointing in the same direction correspond to different synchronization signal block (time) numbers as much as possible, thereby avoiding collision of PBCH DMRS symbols between cells.
- a network side device such as a base station, in the embodiment of the present disclosure includes:
- the processor 1000 is configured to read a program in the memory 1020, and perform the following process: generating a candidate physical broadcast channel demodulation reference symbol PBCH DMRS sequence; acquiring a mapping relationship between the PBCH DMRS sequence and the resource unit RE group; according to the mapping relationship, The candidate PBCH DMRS sequence is transmitted using an RE group corresponding to the candidate PBCH DMRS sequence.
- the transceiver 1010 is configured to receive and transmit data under the control of the processor 1000.
- the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1000 and various circuits of memory represented by memory 1020.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- the transceiver 1010 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
- the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 in performing operations.
- the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 in performing operations.
- the mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the processor 1000 is further configured to read the computer program, and perform the following steps:
- the modulated candidate PBCH DMRS sequence is transmitted using the RE group.
- two OFDM symbols of the same synchronization signal block carry the same candidate PBCH DMRS sequence; or two OFDM symbols of the same synchronization signal block carry different candidate PBCH DMRS sequences; or two OFDM symbols of the same synchronization signal block share the same Candidate PBCH DMRS sequence.
- the initial value of the generator polynomial of the candidate PBCH DMRS sequence is determined according to the cell identifier and/or the sequence number of the synchronization signal block.
- the terminal of the embodiment of the present disclosure includes:
- the processor 1100 is configured to read a program in the memory 1120 and perform the following process:
- the candidate PBCH DMRS sequence is received by the transceiver 1110; the RE group corresponding to the candidate PBCH DMRS sequence is determined according to the mapping relationship between the PBCH DMRS sequence and the RE group; and the candidate PBCH DMRS corresponding to the RE group in the RE group
- the sequence is detected; the sequence number of the sync signal block is determined according to the detected candidate PBCH DMRS sequence.
- the transceiver 1110 is configured to receive and transmit data under the control of the processor 1100.
- the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- the transceiver 1110 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
- the user interface 1130 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.
- the mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the processor 1100 is further configured to read the computer program, and perform the following steps:
- the candidate PBCH DMRS sequence in the candidate PBCH DMRS sequence group corresponding to the RE group is used to perform correlation detection, and the correlation value corresponding to each RE group is obtained;
- the candidate PBCH DMRS sequence corresponding to the maximum correlation value is used as the detected candidate PBCH DMRS sequence.
- a computer readable storage medium of an embodiment of the present disclosure is configured to store a computer program executable by a processor to implement the following steps:
- the candidate PBCH DMRS sequence is transmitted by using an RE group corresponding to the candidate PBCH DMRS sequence.
- the mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the modulated candidate PBCH DMRS sequence is transmitted using the RE group.
- two orthogonal frequency division multiplexing OFDM symbols of the same synchronization signal block carry the same candidate PBCH DMRS sequence
- Two orthogonal frequency division multiplexing OFDM symbols of the same synchronization signal block jointly carry the same candidate PBCH DMRS sequence.
- the initial value of the generator polynomial of the candidate PBCH DMRS sequence is determined according to the cell identifier and/or the sequence number of the synchronization signal block.
- a computer readable storage medium of an embodiment of the present disclosure is for storing a computer program executable by the processor to implement the following steps:
- the sequence number of the sync signal block is determined based on the detected candidate PBCH DMRS sequence.
- the mapping relationship includes:
- mapping relationship between the candidate PBCH DMRS sequences of different cell groups and different RE groups The mapping relationship between different candidate PBCH DMRS sequences and different RE groups in the same cell.
- the candidate PBCH DMRS sequence in the candidate PBCH DMRS sequence group corresponding to the RE group is used to perform correlation detection, and the correlation value corresponding to each RE group is obtained;
- the candidate PBCH DMRS sequence corresponding to the maximum correlation value is used as the detected candidate PBCH DMRS sequence.
- the disclosed method and apparatus may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.
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Claims (26)
- 一种信号处理方法,应用于网络侧设备,包括:生成候选物理广播信道解调参考符号PBCH DMRS序列;获取PBCH DMRS序列和资源单位RE组的映射关系;以及根据所述映射关系,利用与所述候选PBCH DMRS序列对应的RE组传输所述候选PBCH DMRS序列。
- 根据权利要求1所述的方法,其中,所述映射关系包括:不同小区的候选PBCH DMRS序列和不同的RE组的映射关系;或同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系;或不同的小区组的候选PBCH DMRS序列和不同的RE组的映射关系;同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系。
- 根据权利要求1所述的方法,其中,所述根据所述映射关系,利用与所述候选PBCH DMRS序列对应的RE组传输所述候选PBCH DMRS序列,包括:对所述候选PBCH DMRS序列进行调制;根据所述映射关系,将调制后的候选PBCH DMRS序列映射到RE组上;以及利用所述RE组传输所述调制后的候选PBCH DMRS序列。
- 根据权利要求3所述的方法,其中,同一个同步信号块两个正交频分复用OFDM符号承载相同的候选PBCH DMRS序列;或者同一个同步信号块两个正交频分复用OFDM符号承载不同的候选PBCH DMRS序列;或者同一个同步信号块两个正交频分复用OFDM符号共同承载同一候选PBCH DMRS序列。
- 根据权利要求1至4中任一项所述的方法,其中,所述候选PBCH DMRS序列的生成多项式的初始值是根据小区标识和/或同步信号块的序号 确定的。
- 一种信号处理方法,应用于终端,包括:接收候选PBCH DMRS序列;根据PBCH DMRS序列和RE组的映射关系,确定所述候选PBCH DMRS序列对应的RE组;在所述RE组内,对所述RE组对应的候选PBCH DMRS序列进行检测;以及根据检测到的候选PBCH DMRS序列,确定同步信号块的序号。
- 根据权利要求6所述的方法,其中,所述映射关系包括:不同小区的候选PBCH DMRS序列和不同的RE组的映射关系;或同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系;或不同的小区组的候选PBCH DMRS序列和不同的RE组的映射关系;同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系。
- 根据权利要求6所述的方法,其中,所述在所述RE组内,对所述RE组对应的候选PBCH DMRS序列进行检测,包括:对所述候选PBCH DMRS序列进行分组,获得候选PBCH DMRS序列组,所述候选PBCH DMRS序列组的数量等于所述RE组的数量;对于每个RE组,利用预设PBCH DMRS序列与所述RE组对应的候选PBCH DMRS序列组中的候选PBCH DMRS序列,进行相关检测,获得每个RE组对应的相关值;从所有RE组的多个相关值中获得最大相关值;以及将所述最大相关值对应的候选PBCH DMRS序列作为检测到的候选PBCH DMRS序列。
- 一种信号处理装置,包括:生成模块,用于生成候选物理广播信道解调参考符号PBCH DMRS序列;获取模块,用于获取PBCH DMRS序列和资源单位RE组的映射关系;以及传输模块,用于根据所述映射关系,利用与所述候选PBCH DMRS序列 对应的RE组传输所述候选PBCH DMRS序列。
- 根据权利要求9所述的装置,其中,所述映射关系包括:不同小区的候选PBCH DMRS序列和不同的RE组的映射关系;或同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系;或不同的小区组的候选PBCH DMRS序列和不同的RE组的映射关系;同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系。
- 根据权利要求9所述的装置,其中,所述传输模块包括:调制子模块,用于对所述候选PBCH DMRS序列进行调制;映射子模块,用于根据所述映射关系,将调制后的候选PBCH DMRS序列映射到RE组上;以及传输子模块,用于利用所述RE组传输所述调制后的候选PBCH DMRS序列。
- 根据权利要求11所述的装置,其中,同一个同步信号块两个正交频分复用OFDM符号承载相同的候选PBCH DMRS序列;或者同一个同步信号块两个正交频分复用OFDM符号承载不同的候选PBCH DMRS序列;或者同一个同步信号块两个正交频分复用OFDM符号共同承载同一候选PBCH DMRS序列。
- 根据权利要求9至12中任一项所述的装置,其中,所述候选PBCH DMRS序列的生成多项式的初始值是根据小区标识和/或同步信号块的序号确定的。
- 一种信号处理装置,包括:接收模块,用于接收候选PBCH DMRS序列;第一确定模块,用于根据PBCH DMRS序列和RE组的映射关系,确定所述候选PBCH DMRS序列对应的RE组;检测模块,用于在所述RE组内,对所述RE组对应的候选PBCH DMRS序列进行检测;以及第二确定模块,用于根据检测到的候选PBCH DMRS序列,确定同步信号块的序号。
- 根据权利要求14所述的装置,其中,所述映射关系包括:不同小区的候选PBCH DMRS序列和不同的RE组的映射关系;或同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系;或不同的小区组的候选PBCH DMRS序列和不同的RE组的映射关系;同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系。
- 根据权利要求14所述的装置,其中,所述检测模块包括:分组子模块,用于对所述候选PBCH DMRS序列进行分组,获得候选PBCH DMRS序列组,所述候选PBCH DMRS序列组的数量等于所述RE组的数量;检测子模块,用于对于每个RE组,利用预设PBCH DMRS序列与所述RE组对应的候选PBCH DMRS序列组中的候选PBCH DMRS序列,进行相关检测,获得每个RE组对应的相关值;获取子模块,用于从所有RE组的多个相关值中获得最大相关值;以及确定子模块,用于将所述最大相关值对应的候选PBCH DMRS序列作为检测到的候选PBCH DMRS序列。
- 一种网络侧设备,包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序;其中,所述处理器执行所述计算机程序时实现一种信号处理方法,包括:生成候选物理广播信道解调参考符号PBCH DMRS序列;获取PBCH DMRS序列和资源单位RE组的映射关系;以及根据所述映射关系,利用与所述候选PBCH DMRS序列对应的RE组传输所述候选PBCH DMRS序列。
- 根据权利要求17所述的网络侧设备,其中,所述映射关系包括:不同小区的候选PBCH DMRS序列和不同的RE组的映射关系;或同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系;或不同的小区组的候选PBCH DMRS序列和不同的RE组的映射关系;同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系。
- 根据权利要求17所述的网络侧设备,其中,所述处理器执行所述计算机程序时还实现:对所述候选PBCH DMRS序列进行调制;根据所述映射关系,将调制后的候选PBCH DMRS序列映射到RE组上;以及利用所述RE组传输所述调制后的候选PBCH DMRS序列。
- 根据权利要求19所述的网络侧设备,其中,同一个同步信号块两个正交频分复用OFDM符号承载相同的候选PBCH DMRS序列;或者同一个同步信号块两个正交频分复用OFDM符号承载不同的候选PBCH DMRS序列;或者同一个同步信号块两个正交频分复用OFDM符号共同承载同一候选PBCH DMRS序列。
- 根据权利要求17至20中任一项所述的网络侧设备,其中,所述候选PBCH DMRS序列的生成多项式的初始值是根据小区标识和/或同步信号块的序号确定的。
- 一种终端侧设备,包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序;其中,所述处理器执行所述计算机程序时实现一种信号处理方法,包括:接收候选PBCH DMRS序列;根据PBCH DMRS序列和RE组的映射关系,确定所述候选PBCH DMRS序列对应的RE组;在所述RE组内,对所述RE组对应的候选PBCH DMRS序列进行检测;以及根据检测到的候选PBCH DMRS序列,确定同步信号块的序号。
- 根据权利要求22所述的终端侧设备,其中,所述映射关系包括:不同小区的候选PBCH DMRS序列和不同的RE组的映射关系;或同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系;或不同的小区组的候选PBCH DMRS序列和不同的RE组的映射关系;同一小区内,不同的候选PBCH DMRS序列和不同的RE组的映射关系。
- 根据权利要求22所述的终端侧设备,其中,所述处理器执行所述计算机程序时还实现:对所述候选PBCH DMRS序列进行分组,获得候选PBCH DMRS序列组,所述候选PBCH DMRS序列组的数量等于所述RE组的数量;对于每个RE组,利用预设PBCH DMRS序列与所述RE组对应的候选PBCH DMRS序列组中的候选PBCH DMRS序列,进行相关检测,获得每个RE组对应的相关值;从所有RE组的多个相关值中获得最大相关值;以及将所述最大相关值对应的候选PBCH DMRS序列作为检测到的候选PBCH DMRS序列。
- 一种计算机可读存储介质,用于存储计算机程序,其中,所述计算机程序被处理器执行时实现如权利要求1至5中任一项所述的方法中的步骤。
- 一种计算机可读存储介质,用于存储计算机程序,其中,所述计算机程序被处理器执行时实现如权利要求6至8中任一项所述的方法中的步骤。
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US11856540B2 (en) | 2020-02-10 | 2023-12-26 | Nec Corporation | Methods and apparatuses for synchronization signal transmission |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103037514A (zh) * | 2011-09-30 | 2013-04-10 | 上海贝尔股份有限公司 | 一种通信网络中用于传输解调参考信号的方法和装置 |
CN104812057A (zh) * | 2014-01-29 | 2015-07-29 | 北京三星通信技术研究有限公司 | 一种d2d系统中数据传输的方法及设备 |
WO2016048074A1 (ko) * | 2014-09-24 | 2016-03-31 | 엘지전자 주식회사 | 무선 통신 시스템에서 참조 신호를 송수신하는 방법 및 이를 위한 장치 |
CN105917610A (zh) * | 2013-12-10 | 2016-08-31 | 瑞典爱立信有限公司 | 用于数据无线电传输的基于组的资源单元映射 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2730104B1 (en) | 2011-07-06 | 2019-10-09 | Nokia Solutions and Networks Oy | Dm rs based downlink lte physical layer |
US9271288B2 (en) * | 2012-02-07 | 2016-02-23 | Qualcomm Incorporated | Resource allocation for enhanced physical downlink control channel (EPDCCH) |
CN103906139B (zh) * | 2012-12-27 | 2018-10-30 | 夏普株式会社 | 系统信息的发送和接收方法以及基站和用户设备 |
US10893520B2 (en) * | 2015-08-26 | 2021-01-12 | Qualcomm Incorporated | Downlink and synchronization techniques for narrowband wireless communications |
WO2018068723A1 (en) * | 2016-10-11 | 2018-04-19 | Mediatek Inc. | Method and apparatus for handling synchronization signal block in mobile communications |
ES2932829T3 (es) * | 2017-02-03 | 2023-01-26 | Idac Holdings Inc | Transmisión y demodulación de un canal de difusión |
US10484153B2 (en) * | 2017-03-09 | 2019-11-19 | Samsung Electronics Co., Ltd. | Method and apparatus for NR-DMRS sequence design |
US10285147B2 (en) | 2017-04-10 | 2019-05-07 | Qualcomm Incorporated | Reference signal schemes in wireless communications |
US10925023B2 (en) * | 2017-05-04 | 2021-02-16 | Innovative Technology Lab Co., Ltd. | Method and apparatus for communicating reference signal for broadcast channel |
EP4040858A1 (en) | 2017-05-05 | 2022-08-10 | ZTE Corporation | Techniques for communicating synchronization signal timing information |
JP7030818B2 (ja) * | 2017-05-05 | 2022-03-07 | エルジー エレクトロニクス インコーポレイティド | 同期信号を受信する方法及びそのための装置 |
JP7214654B2 (ja) * | 2017-05-05 | 2023-01-30 | 富士通株式会社 | 情報指示方法、検出方法及びその装置、通信システム |
CN108989003B (zh) * | 2017-06-02 | 2024-06-25 | 华为技术有限公司 | 一种通信的方法及装置 |
EP3639454A1 (en) | 2017-06-15 | 2020-04-22 | Convida Wireless, LLC | Beam based downlink control signaling |
WO2018229952A1 (ja) * | 2017-06-15 | 2018-12-20 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
US20180368084A1 (en) * | 2017-06-16 | 2018-12-20 | Lg Electronics Inc. | Self-contained dmrs for pbch in ss block |
US20190013917A1 (en) * | 2017-07-10 | 2019-01-10 | Qualcomm Incorporated | Demodulation reference signal (dmrs) sequence generation and resource mapping for physical broadcast channel (pbch) transmissions |
CN109309557B (zh) * | 2017-07-28 | 2020-09-01 | 电信科学技术研究院 | 一种信号处理方法、装置、设备及计算机可读存储介质 |
WO2019098768A1 (ko) * | 2017-11-17 | 2019-05-23 | 엘지전자 주식회사 | 하향링크 채널을 송수신하는 방법 및 이를 위한 장치 |
-
2017
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2018
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103037514A (zh) * | 2011-09-30 | 2013-04-10 | 上海贝尔股份有限公司 | 一种通信网络中用于传输解调参考信号的方法和装置 |
CN105917610A (zh) * | 2013-12-10 | 2016-08-31 | 瑞典爱立信有限公司 | 用于数据无线电传输的基于组的资源单元映射 |
CN104812057A (zh) * | 2014-01-29 | 2015-07-29 | 北京三星通信技术研究有限公司 | 一种d2d系统中数据传输的方法及设备 |
WO2016048074A1 (ko) * | 2014-09-24 | 2016-03-31 | 엘지전자 주식회사 | 무선 통신 시스템에서 참조 신호를 송수신하는 방법 및 이를 위한 장치 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3661096A4 * |
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