WO2019136725A1 - 确定同步信号块的频域位置的方法、终端设备和网络设备 - Google Patents

确定同步信号块的频域位置的方法、终端设备和网络设备 Download PDF

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Publication number
WO2019136725A1
WO2019136725A1 PCT/CN2018/072505 CN2018072505W WO2019136725A1 WO 2019136725 A1 WO2019136725 A1 WO 2019136725A1 CN 2018072505 W CN2018072505 W CN 2018072505W WO 2019136725 A1 WO2019136725 A1 WO 2019136725A1
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Prior art keywords
synchronization
signal block
bandwidth
grid
frequency domain
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PCT/CN2018/072505
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English (en)
French (fr)
Inventor
唐海
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2018/072505 priority Critical patent/WO2019136725A1/zh
Priority to CN201880036989.8A priority patent/CN110710151B/zh
Publication of WO2019136725A1 publication Critical patent/WO2019136725A1/zh

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a method, terminal device, and network device for determining a frequency domain location of a synchronization signal block.
  • the terminal device determines the frequency domain location of the synchronization block (SS block)
  • the terminal device indicates that the synchronization raster of the second SS block is offset from the synchronization raster of the first SS block. value.
  • the range of the synchronous raster that the indication information needs to indicate includes -342, -341, ..., -1, 1, ..., 341, 342.
  • the frequency band supported by the terminal device is n78
  • the frequency range of the n78 is 3300 MHz-3800 MHz
  • the interval between the synchronous rasters is 1.44 MHz
  • the interval of the synchronous raster corresponding to the other synchronization signal blocks is 1. That is 1.44MHz.
  • the bandwidth of a sync block is 20 RBs and the subcarrier spacing is 30 kHz, the bandwidth of the sync block is 7.2 MHz, which exceeds the interval of the sync raster by 1.44 MHz. If the indication mode in the prior art is used, the synchronization signal block adjacent to the current synchronization signal block may overlap with the current synchronization signal block in the frequency domain position, thereby causing the position of the synchronization raster indicated by the network device not to be There will be synchronization signal block transmission, which affects transmission efficiency.
  • the interval between the synchronization raster indicated by the network device and the synchronization raster corresponding to the current synchronization signal block is smaller than the bandwidth of the synchronization signal block.
  • a method, terminal device and network device for determining a frequency domain position of a sync signal block are provided.
  • the accuracy of the frequency domain position of the sync signal block can be effectively improved.
  • a method of determining a frequency domain location of a synchronization signal block comprising:
  • the terminal device receives the first information sent by the network device, where the first information is used by the terminal device to determine that the second synchronization grid to which the second synchronization signal block belongs is in the frequency domain relative to the first synchronization gate to which the current synchronization signal block belongs.
  • An offset of the grid wherein the offset is greater than or equal to a bandwidth of the synchronization signal block;
  • the terminal device determines a frequency domain location of the second synchronization signal block based on the second synchronization grid.
  • the accuracy of the frequency domain position of the synchronization information block determined by the terminal device can be effectively improved.
  • the offset is related to at least one of:
  • the bandwidth of the sync block, the spacing bandwidth between sync grids, and the band range.
  • the offset is a bandwidth corresponding to the number of synchronization grids in the frequency domain that the second synchronization grid increases or decreases relative to the first synchronization grid.
  • the number of synchronization grids corresponding to the offset satisfies the following formula:
  • n is a number of synchronization grids in which the second synchronization grid is increased or decreased in frequency domain with respect to the first synchronization grid
  • ⁇ raster is an interval bandwidth between synchronization grids
  • W SSB is the bandwidth of the sync signal block.
  • a method for determining a frequency domain location of a sync signal block comprising:
  • the network device generates first information, where the first information is used by the terminal device to determine, in the frequency domain, an offset of the second synchronization grid to which the second synchronization signal block belongs, relative to the first synchronization grid to which the current synchronization signal block belongs. An amount, wherein the offset is greater than or equal to a bandwidth of the synchronization signal block; so that the terminal device determines a frequency domain location of the second synchronization signal block based on the second synchronization grid;
  • the network device sends the first information to the terminal device.
  • the offset is related to at least one of:
  • the bandwidth of the sync block, the spacing bandwidth between sync grids, and the band range.
  • the offset is a bandwidth corresponding to the number of synchronization grids in the frequency domain that the second synchronization grid increases or decreases relative to the first synchronization grid.
  • the number of synchronization grids corresponding to the offset satisfies the following formula:
  • n is a number of synchronization grids in which the second synchronization grid is increased or decreased in frequency domain with respect to the first synchronization grid
  • ⁇ raster is an interval bandwidth between synchronization grids
  • W SSB is the bandwidth of the sync signal block.
  • a terminal device including:
  • a transceiver unit configured to receive first information sent by the network device, where the first information is used by the terminal device to determine, by the terminal device, that the second synchronization grid to which the second synchronization signal block belongs is in a frequency domain relative to a current synchronization signal block.
  • a processing unit configured to determine a frequency domain position of the second synchronization signal block based on the second synchronization grid.
  • a terminal device including:
  • a transceiver configured to receive first information sent by the network device, where the first information is used by the terminal device to determine, by the terminal device, that the second synchronization grid to which the second synchronization signal block belongs is related to the current synchronization signal block in the frequency domain.
  • a processor configured to determine a frequency domain location of the second synchronization signal block based on the second synchronization grid.
  • a network device including:
  • a processing unit configured to generate first information, where the first information is used by the terminal device to determine, in a frequency domain, a second synchronization grid to which the second synchronization signal block belongs, relative to a first synchronization grid to which the current synchronization signal block belongs Offset, wherein the offset is greater than or equal to a bandwidth of the synchronization signal block; so that the terminal device determines a frequency domain position of the second synchronization signal block based on the second synchronization grid;
  • transceiver unit configured to send the first information to the terminal device.
  • a network device including:
  • a processor configured to generate first information, where the first information is used by the terminal device to determine, by the terminal device, that the second synchronization grid to which the second synchronization signal block belongs is in a frequency domain with respect to a first synchronization grid to which the current synchronization signal block belongs Offset, wherein the offset is greater than or equal to a bandwidth of the synchronization signal block; so that the terminal device determines a frequency domain position of the second synchronization signal block based on the second synchronization grid;
  • a transceiver configured to send the first information to the terminal device.
  • a computer readable medium for storing a computer program comprising instructions for performing the method embodiment of the first aspect or the second aspect described above.
  • a computer chip comprising: an input interface, an output interface, at least one processor, a memory, the processor is configured to execute code in the memory, and when the code is executed, the processing.
  • a computer chip comprising: an input interface, an output interface, at least one processor, and a memory, wherein the processor is configured to execute code in the memory, when the code is executed, the processing.
  • a communication system comprising the network device as described above, and the terminal device described above.
  • FIG. 1 is an example of an application scenario of the present invention.
  • FIG. 2 is a schematic block diagram of an SS block according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for determining a position of a synchronization signal block according to an embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of another terminal device according to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of a network device according to an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of another network device according to an embodiment of the present invention.
  • a 5G communication system For example, a hybrid deployment scenario composed of a 5G communication system and a first communication system, and the like.
  • the first communication system can be any communication system.
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the embodiment of the present invention is exemplified only by the 5G communication system, but the embodiment of the present invention is not limited thereto.
  • the present invention describes various embodiments in connection with network devices and terminal devices.
  • the network device may refer to any entity on the network side that is used to send or receive signals.
  • a base station device or the like in a 5G network may refer to any entity on the network side that is used to send or receive signals.
  • the terminal device can be any terminal device. Specifically, the terminal device can communicate with one or more core networks (Core Network) via a Radio Access Network (RAN), and can also be referred to as an access terminal, a user equipment (User Equipment, UE), and a user. Unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. For example, it can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and a wireless communication function. Handheld device, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, and the like.
  • RAN Radio Access Network
  • UE User Equipment
  • Unit subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • SIP Ses
  • FIG. 1 is a schematic diagram of a 5G application scenario according to an embodiment of the present invention.
  • the communication system 100 can include a network device 110, a terminal device 120, and a terminal device 130.
  • the network device 110 can communicate with the terminal device 120 and the terminal device 130 through air interfaces, respectively.
  • Multi-service transmission is supported between the network device 110 and the terminal device (the terminal device 120 and the terminal device 130).
  • the path loss of the wireless signal transmission becomes large, and the coverage of the wireless signal becomes small.
  • a beamforming technique is used to form a beam to increase the gain of the wireless signal to compensate for the path loss.
  • the beam has directivity, and a narrow beam can only cover part of the cell and cannot cover all users in the cell.
  • the network device 110 can transmit signals through four different directions of beams (B1/B2/B3/B4).
  • beam B2 For the beam B2, only the terminal device 120 can be covered, and the terminal device 130 cannot be covered.
  • the synchronization signal (SS) and the physical broadcast channel (PBCH) involved in the communication system 100 need to cover the entire cell by means of multi-beam scanning, which facilitates reception of terminal devices in the cell.
  • the multi-beam transmission of the synchronization signal (SS) is implemented by defining an SS burst set.
  • An SS burst set contains one or more SS bursts, and an SS burst contains one or more SS blocks.
  • An SS block is used to carry the synchronization signal and broadcast channel of one beam.
  • a SS block includes a symbol of a Primary Synchronization Signal (PSS), a symbol of a Secondary Synchronization Signal (SSS), and a new air interface of two symbols-physical New Radio Access Technology-Physical Broadcast Channel (NR-PBCH). Therefore, an SS Burst Set can contain synchronization signals of SS block beams in a cell.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • NR-PBCH New Radio Access Technology-Physical Broadcast Channel
  • the period of the SS burst set is configurable, and the SS burst set bearer sent in one period is sent in a time window of 5 ms. For example, taking a 15 kHz subcarrier spacing as an example, a slot contains 14 symbols and can carry two SS blocks. It should also be understood that in addition to the above-mentioned synchronization signals and PBCHs that require multi-beam scanning, other common information, such as Remaining System Information (RMSI), paging, also requires multi-beam scanning. send.
  • RMSI Remaining System Information
  • a user equipment User Equipment, UE
  • UE User Equipment
  • part of the system message is carried over the NR-PBCH, and another part of the system message is carried over the NR-PDSCH.
  • the system message carried by the NR-PDSCH includes Remaining minimum system information (RMSI).
  • RMSI Remaining minimum system information
  • DCI Downlink Control Information
  • corresponding to the NR-PDSCH is carried on the NR-PDCCH, and the time-frequency resource location where the NR-PDCCH is located is indicated by the CORESET information carried by the NR-PBCH.
  • the NR-PBCH also carries the RMSI presence flag information, which is used to indicate whether the SS block is associated with the RMSI information.
  • the RMSI presence flag information indicates that there is no RMSI through the reserved value in the PRB grid offset information field.
  • the network device can use some existing bits to indicate the frequency domain location information of the terminal device synchronization signal block.
  • PRB grid offset information is described below:
  • the division in RB includes 12 subcarriers in each RB.
  • the RB partitioning and the data channel RB partitioning for the SS block may be misaligned, that is, the starting subcarriers of one RB are inconsistent, but there is an offset.
  • the PRB grid offset information in the PBCH needs to be used to indicate the deviation between the RBs.
  • the resource elements (Resource Element, RE) of the 0-11 SS blocks that are offset by the offset between the RBs can be indicated by 4 bits.
  • one subcarrier on the frequency is a symbol on the time domain, which is called an RE.
  • the PRB grid offset information field includes 4 bits, it is used to indicate an offset between the physical resource block PRB grid between the synchronization signal block and the channel or signal of the asynchronous signal block, and the offset includes 0-11 subcarriers.
  • the PRB grid offset information field also includes four reserved values, which can be used to indicate that there is no RMSI.
  • RMSI Remaining System Information
  • CORESET Control Resource Set
  • NR-PDCCH New Radio-Physical Downlink Control Channel
  • NR-PDSCH New Radio-Physical Downlink Shared Channel
  • the indication information of CORESET is carried in the NR-PBCH for the UE to receive the RMSI.
  • the configuration information of the CORESET mainly includes the following information: a frequency domain resource, an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and a time length.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the CORESET information of the RMSI can be indicated by 8 bits.
  • the CORESET information field can be used to indicate frequency domain location information of the synchronization signal block, thereby facilitating the UE to reduce blind detection according to the frequency domain location information of the synchronization signal block.
  • the PBCH in the sync signal block is detected to obtain the CORESET information of the RMSI, and the RMSI is received.
  • the frequency domain position of the synchronization signal block may be defined by a synchronization raster.
  • the possible frequency domain positions of the sync signal block are determined by the formulas in the table in different frequency ranges. More specifically, the number is numbered by SSREF and determined based on the SSREF number. Where SSREF represents the frequency domain position of the sync signal block.
  • Table 1 shows the relationship between the frequency domain position of SS Block and GSCN in the frequency range
  • GSCN represents the Global Synchronization Channel Number.
  • Table 2 Mapping relationship between synchronous grid and resource elements of sync block
  • the synchronous raster is located in the RE of the number 0 of the PRB with the PRB number of 10 in the 20 physical resource blocks (PRBs) of the synchronization signal block.
  • the distribution of synchronous rasters within the band is different under different bands. Specifically, it can be determined by the following table. For example, for band n77, the synchronous raster has a number range of 9460–10079, for a total of 620 synchronous rasters.
  • Table 3 applies to the GSCN corresponding to each frequency band.
  • the SS Block SCS is a subcarrier spacing (SCS) of the SS Block.
  • SCS subcarrier spacing
  • GSCN stands for Global Synchronization Channel Number.
  • the reserved value in the PRB grid offset information field indicates that when there is no RMSI, the resource information of the second SS block relative to the first SS block may be indicated by a bit in the CORESET information field of the RMSI. Since the CORESET information field contains 8 bits, the position of 256 synchronous rasters can be indicated by indicating the offset of the target synchronization raster and the synchronization raster corresponding to the current synchronization signal block.
  • RMSI-PDCCH-configuration information Offset R0 0 +1 R0 1 +2 R0 2 +3 ... ... ... R0 254 +255 R0 255 +256 R1 0 +257 R1 1 +258 ... ... R1 84 +341 R1 85 +342 R1 86 -1 R1 87 -2 ... ... ... R1 255 -170 R2 0 -171 R2 1 -172 ... ... ... R2 170 -341 R2 171 -342 R2 172 Reserved ... ... ... R2 255 Reserved R3 0 Reserved ... ... ... R3 255 Reserved
  • R0, R1, and R2 are reserved values in the PRB grid offset information field, and can be used to indicate that there is no RMSI.
  • the CORESET information field of the RMSI shares 8 bits, which can represent 0-255.
  • the two pieces of information are used to jointly indicate the frequency domain location information of the second SS block, and the frequency domain location information indicates the synchronous raster where the second SS block is located.
  • Table 4 is only exemplified by taking the band n78 as an example, and the embodiment of the present application is not limited thereto.
  • the range of synchronous rasters that band n78 needs to indicate includes -342, -341, ..., -1, 1, ..., 341, 342.
  • the scope of the synchronous raster is not limited to this.
  • the frequency band supported by the terminal device is n78
  • the frequency range of the n78 is 3300 MHz-3800 MHz
  • the interval between the synchronous rasters is 1.44 MHz
  • the interval of the synchronous raster corresponding to the other synchronization signal blocks is 1. That is 1.44MHz.
  • the bandwidth of a sync block is 20 RBs and the subcarrier spacing is 30 kHz, the bandwidth of the sync block is 7.2 MHz, which exceeds the interval of the sync raster by 1.44 MHz. If the indication mode in the prior art is used, the synchronization signal block adjacent to the current synchronization signal block may overlap with the current synchronization signal block in the frequency domain position, thereby causing the position of the synchronization raster indicated by the network device not to be There will be synchronization signal block transmission, which affects transmission efficiency.
  • the interval between the synchronization raster indicated by the network device and the synchronization raster corresponding to the current synchronization signal block is smaller than the bandwidth of the synchronization signal block.
  • a method for determining a frequency domain position of a synchronization signal block determines the synchronization signal by limiting the interval between the synchronization raster indicated by the network device and the synchronization raster corresponding to the current synchronization signal block. The accuracy of the block's frequency domain location.
  • FIG. 3 is a schematic flowchart of a method for determining a frequency domain position of a synchronization signal block according to an embodiment of the present invention.
  • the method includes:
  • the network device generates first information, where the first information is used by the terminal device to determine, in the frequency domain, an offset of the second synchronization grid to which the second synchronization signal block belongs, relative to the first synchronization grid to which the current synchronization signal block belongs. the amount.
  • the network device sends the first information to the terminal device.
  • the terminal device determines a frequency domain location of the second synchronization signal block based on the second synchronization grid.
  • the terminal device receives the first information sent by the network device, and the terminal device determines the frequency domain location of the second synchronization signal block based on the second synchronization grid. It should be noted that the offset is greater than or equal to the bandwidth of the synchronization signal block;
  • the second synchronization grid may be determined by the terminal device based on the first information. In the embodiment of the present application, only the second synchronization grid is limited to the second synchronization grid in the frequency domain.
  • the offset of a sync grid is greater than or equal to the bandwidth of the sync block.
  • the second synchronization grid is a synchronization grid that is determined by the terminal device based on the first information and is closest to the first synchronization grid, and ensures that the second synchronization grid is opposite to the first synchronization.
  • the offset of the grid is greater than or equal to the bandwidth of the sync block. Therefore, the terminal device ensures that the offset between the frequency domain position of the second synchronization signal block and the first synchronization grid determined by the terminal device is greater than or equal to the bandwidth of the synchronization signal block.
  • the interval between the synchronization rasters that are adjacent to the synchronization raster corresponding to the current synchronization signal block needs to be equal to or greater than the frequency domain bandwidth of the synchronization signal block.
  • the synchronization signal block adjacent to the current synchronization signal block can be effectively prevented from overlapping with the current synchronization signal block in the frequency domain position, thereby improving the accuracy of the frequency domain position of the synchronization information block determined by the terminal device.
  • the accuracy of the frequency domain position of the synchronization information block determined by the terminal device is improved by specifying the offset amount before the position of the synchronization raster adjacent to the synchronization raster corresponding to the current synchronization signal block.
  • it is defined by the bandwidth of the position synchronization signal block of the synchronization raster adjacent to the synchronization raster corresponding to the current synchronization signal block, and the interval of the adjacent synchronization raster.
  • the accuracy of the frequency domain position of the synchronization information block determined by the terminal device can be effectively improved.
  • the offset is related to at least one of:
  • the bandwidth of the sync block, the spacing bandwidth between sync grids, and the band range.
  • the offset is a bandwidth corresponding to the number of synchronization grids that the second synchronization grid increases or decreases in the frequency domain with respect to the first synchronization grid.
  • the number of synchronization grids corresponding to the offset satisfies the following formula:
  • n is the number of synchronization grids that the second synchronization grid increases or decreases in the frequency domain relative to the first synchronization grid
  • ⁇ raster is the interval bandwidth between the synchronization grids
  • W SSB is the The bandwidth of the sync block.
  • the frequency range of the band n78 is 3300 MHz to 3800 MHz
  • the interval between the synchronization rasters is 1.44 MHz
  • the interval of the synchronization raster corresponding to the other synchronization signal blocks is 1, that is, 1.44 MHz.
  • the bandwidth of a sync block is 20 RBs and the subcarrier spacing is 30 kHz, the bandwidth of the sync block is 7.2 MHz, which exceeds the interval of the sync raster by 1.44 MHz.
  • the offset of the second synchronization grid relative to the first synchronization grid (the bandwidth corresponding to +5 or -5 synchronization grids) is greater than or equal to the bandwidth of the synchronization signal block. Therefore, the synchronization signal block adjacent to the current synchronization signal block can be prevented from overlapping with the current synchronization signal block in the frequency domain position, thereby improving transmission efficiency.
  • the terminal device determines the offset of the sync grid can be determined by referring to the following table:
  • RMSI-PDCCH-configuration information Offset R0 0 +5 R0 1 +6 R0 2 +7 ... ... ... R0 255 +260 R1 0 +261 R1 1 +262 ... ... R1 80 +341 R1 81 +342 R1 82 -5 R1 83 -6 ... ... ... R1 255 -178 R2 0 -179 R2 1 -180 ... ... ... R2 162 -341 R2 163 -342 R2 164 Reserved ... ... ... R2 255 Reserved R3 0 Reserved ... ... ... R3 255 Reserved
  • the second synchronization grid is the synchronization grid closest to the first synchronization grid determined by the terminal device based on the first information, and the second synchronization grid is guaranteed to be opposite to the first synchronization grid.
  • the offset of a sync grid (the bandwidth corresponding to +5 or -5 sync grids) is greater than or equal to the bandwidth of the sync block. Therefore, the terminal device ensures that the offset between the frequency domain position of any one of the second synchronization signal blocks and the first synchronization grid determined by the terminal device is greater than or equal to the bandwidth of the synchronization signal block.
  • FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 300 includes:
  • the transceiver unit 310 is configured to receive first information sent by the network device, where the first information is used by the terminal device to determine, by the terminal device, that the second synchronization grid to which the second synchronization signal block belongs is in the frequency domain relative to the first current synchronization signal block.
  • the offset of the synchronization grid wherein the offset is greater than or equal to the bandwidth of the synchronization signal block;
  • the processing unit 320 is configured to determine a frequency domain position of the second synchronization signal block based on the second synchronization grid.
  • the offset is related to at least one of:
  • the bandwidth of the sync block, the spacing bandwidth between sync grids, and the band range.
  • the offset is a bandwidth corresponding to the number of synchronization grids that the second synchronization grid increases or decreases in the frequency domain with respect to the first synchronization grid.
  • the number of synchronization grids corresponding to the offset satisfies the following formula:
  • n is the number of synchronization grids that the second synchronization grid increases or decreases in the frequency domain relative to the first synchronization grid
  • ⁇ raster is the interval bandwidth between the synchronization grids
  • W SSB is the The bandwidth of the sync block.
  • the transceiver unit 310 can be implemented by a transceiver, and the processing unit 320 can be implemented by a processor.
  • the terminal device 400 may include a processor 410, a transceiver 420, and a memory 430.
  • the memory 430 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 410.
  • the various components in the terminal device 400 are connected by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the terminal device 400 shown in FIG. 5 can implement the various processes implemented by the terminal device in the foregoing method embodiment of FIG. 3. To avoid repetition, details are not described herein again.
  • FIG. 6 is a schematic block diagram of a network device according to an embodiment of the present invention.
  • the network device 500 includes:
  • the processing unit 510 is configured to generate first information, where the first information is used by the terminal device to determine that the second synchronization grid to which the second synchronization signal block belongs is in the frequency domain relative to the first synchronization grid to which the current synchronization signal block belongs An offset, wherein the offset is greater than or equal to a bandwidth of the synchronization signal block; so that the terminal device determines a frequency domain location of the second synchronization signal block based on the second synchronization grid;
  • the transceiver unit 520 is configured to send the first information to the terminal device.
  • the offset is related to at least one of:
  • the bandwidth of the sync block, the spacing bandwidth between sync grids, and the band range.
  • the offset is a bandwidth corresponding to the number of synchronization grids that the second synchronization grid increases or decreases in the frequency domain with respect to the first synchronization grid.
  • the number of synchronization grids corresponding to the offset satisfies the following formula:
  • n is the number of synchronization grids that the second synchronization grid increases or decreases in the frequency domain relative to the first synchronization grid
  • ⁇ raster is the interval bandwidth between the synchronization grids
  • W SSB is the The bandwidth of the sync block.
  • the processing unit 510 can be implemented by a transceiver, and the transceiver unit 520 can be implemented by a processor.
  • network device 600 can include a processor 610, a transceiver 620, and a memory 630.
  • the memory 630 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 610.
  • the various components in the network device 600 are connected by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the network device 600 shown in FIG. 7 can implement the various processes implemented by the network device in the foregoing method embodiment of FIG. 3. To avoid repetition, details are not described herein again.
  • the method embodiment in the embodiment of the present invention may be implemented by a processor and a transceiver.
  • each step of the method embodiment in the embodiment of the present invention may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. More specifically, the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the processor mentioned in the embodiment of the present invention may be an integrated circuit chip, which has signal processing capability, and may implement or execute the disclosed methods, steps, and logic blocks in the embodiments of the present invention.
  • the above processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or Other programmable logic devices, transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory referred to in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • the memory in the embodiment of the present invention may also be a static random access memory (SRAM), a dynamic random access memory (DRAM), or a dynamic random access memory (DRAM).
  • SDRAM Synchronous dynamic random access memory
  • DDR double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection Synchro link DRAM
  • DR RAM direct memory bus
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined.
  • 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.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.

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Abstract

提供了一种确定同步信号块的频域位置的方法、终端设备和网络设备。该方法包括：终端设备接收网络设备发送的第一信息，该第一信息用于该终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，该偏移量大于或等于同步信号块的带宽；该终端设备基于该第二同步栅格，确定该第二同步信号块的频域位置。本申请实施例中，通过规定该第二同步栅格相对该第一同步栅格之间的偏移量，能够有效提高终端设备确定的同步信息块的频域位置的准确度。

Description

确定同步信号块的频域位置的方法、终端设备和网络设备 技术领域
本发明实施例涉及通信领域，并且更具体地，涉及确定同步信号块的频域位置的方法、终端设备和网络设备。
背景技术
现有技术中，终端设备确定同步信号块(SS block)的频域位置时，终端设备通过指示信息第二SS block所在的同步栅格(raster)相对第一SS block所在的同步raster的偏移值。以band n78为例，该指示信息需要指示的同步raster的范围包括-342，-341，…,-1,1,…,341,342。
可以发现，假设终端设备支持的频带(band)为n78，且n78的频域范围为3300MHz-3800MHz，同步raster之间的间隔为1.44MHz，且其他同步信号块对应的同步raster的间隔为1，即1.44MHz。
如果一个同步信号块的带宽为20个RB，子载波间隔为30kHz，则同步信号块的带宽为7.2MHz，超过同步raster的间隔1.44MHz。如果采用现有技术中的指示方式，与当前同步信号块相邻的同步信号块在频域位置上可能会与该当前同步信号块发生重叠，进而导致网络设备所指示的同步raster的位置并不会有同步信号块发送，影响传输效率。
例如，网络设备所指示的同步raster与当前同步信号块对应的同步raster的间隔小于同步信号块的带宽。
发明内容
提供了一种确定同步信号块的频域位置的方法、终端设备和网络设备。能够有效提高同步信号块的频域位置的准确度。
第一方面，提供了一种确定同步信号块的频域位置的方法，所述方法包括：
终端设备接收网络设备发送的第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；
所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置。
本申请实施例中，通过规定该第二同步栅格相对该第一同步栅格之间的偏移量，能够有效提高终端设备确定的同步信息块的频域位置的准确度。
在一些可能的实现方式中，所述偏移量与以下中的至少一项相关：
所述同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
在一些可能的实现方式中，所述偏移量为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
在一些可能的实现方式中，所述偏移量对应的同步栅格的个数满足以下公式：
|n|≥W SSB/Δ raster；
其中，所述n为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，所述W SSB为所述同步信号块的带宽。
第二方面，提供了一种确定同步信号块的频域位置的方法，包括：
网络设备生成第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；以便所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置；
所述网络设备向所述终端设备发送所述第一信息。
在一些可能的实现方式中，所述偏移量与以下中的至少一项相关：
所述同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
在一些可能的实现方式中，所述偏移量为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
在一些可能的实现方式中，所述偏移量对应的同步栅格的个数满足以下公式：
|n|≥W SSB/Δ raster；
其中，所述n为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，所述W SSB为所述同步信号块的带宽。
第三方面，提供了一种终端设备，包括：
收发单元，用于接收网络设备发送的第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；
处理单元，用于基于所述第二同步栅格，确定所述第二同步信号块的频域位置。
第四方面，提供了一种终端设备，包括：
收发器，用于接收网络设备发送的第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；
处理器，用于基于所述第二同步栅格，确定所述第二同步信号块的频域位置。
第五方面，提供了一种网络设备，包括：
处理单元，用于生成第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；以便所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置；
收发单元，用于向所述终端设备发送所述第一信息。
第六方面，提供了一种网络设备，包括：
处理器，用于生成第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；以便所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置；
收发器，用于向所述终端设备发送所述第一信息。
第七方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行上述第一方面或第二方面的方法实施例的指令。
第八方面，提供了一种计算机芯片，包括：输入接口、输出接口、至少一个处理器、存储器，所述处理器用于执行所述存储器中的代码，当所述代 码被执行时，所述处理器可以实现上述第一方面及各种实现方式中的确定同步信号块的频域位置的方法中由终端设备执行的各个过程。
第九方面，提供了一种计算机芯片，包括：输入接口、输出接口、至少一个处理器、存储器，所述处理器用于执行所述存储器中的代码，当所述代码被执行时，所述处理器可以实现前述第二方面及各种实现方式中的确定同步信号块的频域位置的方法中由网络设备执行的各个过程。
第十方面，提供了一种通信系统，包括前述所述的网络设备，以及前述所述的终端设备。
附图说明
图1是本发明应用场景的示例。
图2是本发明实施例的SS block的示意性框图。
图3是本发明实施例的确定同步信号块的位置的方法的示意性流程图。
图4是本发明实施例的终端设备的示意性框图。
图5是本发明实施例的另一终端设备的示意性框图。
图6是本发明实施例的网络设备的示意性框图。
图7是本发明实施例的另一网络设备的示意性框图。
具体实施方式
应理解，本发明实施例的技术方案可以应用于包括5G通信系统的各种场景。例如，5G通信系统和第一通信系统构成的混合部署场景等等。其中，该第一通信系统可以是任一种通信系统。例如：长期演进(Long Term Evolution，LTE)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)等。为便于理解，本发明实施例仅以5G通信系统进行示例性说明，但本发明实施例不限定于此。
此外，本发明结合网络设备和终端设备描述了各个实施例。
其中，网络设备可以指网络侧的任一种用来发送或接收信号的实体。例如，5G网络中的基站设备等。
终端设备可以是任意终端设备。具体地，终端设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网(Core Network)进行 通信，也可称为接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。例如，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备等。
图1是本发明实施例的5G应用场景的示意图。
如图1所示，通信系统100可以包括网络设备110、终端设备120和终端设备130。网络设备110可以通过空口分别与终端设备120和终端设备130通信。网络设备110和终端设备(终端设备120和终端设备130)之间支持多业务传输。
在图1所示的通信系统100中，由于采用的频段较高，无线信号传输的路径损耗变大，无线信号的覆盖变小。此时，通过网络设备110的多天线系统，采用波束形成(beamforming)技术形成波束来提高无线信号的增益来弥补路径损耗。但是，波束具有方向性，一个窄波束只能覆盖小区的部分区域，无法覆盖小区中个的所有用户。
例如，如图1所示，网络设备110可以通过4个不同方向的波束(B1/B2/B3/B4)发送信号，对于波束B2，只能覆盖终端设备120，无法覆盖终端设备130。
由此，通信系统100中涉及的同步信号(synchronization signal，SS)和物理层广播信道(Physical Broadcast Channel，PBCH)，需要通过多波束扫描的方式覆盖整个小区，便于小区内的终端设备的接收。其中，同步信号(synchronization signal，SS)的多波束发送时通过定义SS突发组(burst Set)实现的。一个SS burst set包含一个或者多个SS burst，一个SS burst包含一个或多个SS块(block)。一个SS block用于承载一个波束的同步信号和广播信道。
具体地，如图2所示，一个SS block中包含一个符号的主同步信号(Primary Synchronization Signal，PSS)，一个符号的辅同步信号(Secondary Synchronization Signal，SSS)和两个符号的新空口-物理层广播信道(New Radio Access Technology-Physical broadcast channel，NR-PBCH)。因此，一 个SS Burst Set可以包含小区内SS block个波束的同步信号。
应理解，本申请实施例中，SS burst set的周期可配置，并且一个周期内发送的SS burst set承载在5ms的时间窗内发送。例如，以15kHz子载波间隔为例，一个时隙(slot)包含14个符号(symbol)，可以承载两个SS block。还应理解，除了上述涉及的同步信号和PBCH需要进行多波束扫描，其他的一些公共信息，如剩余系统信息(Remaining System Information，RMSI)，寻呼(paging)，也需要通过多波束扫描的方式发送。
在实际操作中，当用户设备(User Equipment，UE)需要接入网络时，需要从网络获取系统消息。
具体地，一部分系统消息通过NR-PBCH承载，另一部分系统消息通过NR-PDSCH承载。其中，通过NR-PDSCH承载的系统消息包括剩余系统信息(Remaining minimum system information，RMSI)。NR-PDSCH对应的下行控制信息(Downlink Control Information，DCI)承载在NR-PDCCH上，而NR-PDCCH的所在的时频资源位置通过NR-PBCH承载的CORESET信息来指示。
同时，NR-PBCH中还承载有RMSI presence flag信息，用于指示该SS block是否关联RMSI的信息。该RMSI presence flag信息通过PRB栅格偏移(grid offset)信息域中的保留值，指示不存在RMSI。当PRB grid offset信息域指示不存在RMSI时，网络设备可利用某些已有的比特指示终端设备同步信号块的频域位置信息。
为了便于理解，下面对PRB grid offset信息进行说明：
对于带宽内的频率资源，以RB为单位的划分，每个RB中包括12个子载波。但是，对于SS block的RB划分和数据信道RB划分可以是不对齐的，即一个RB的起始子载波不一致，而是存在一个offset。此时，需要通过PBCH中的PRB grid offset信息来指示RB之间的偏差，目前可以通过4比特指示RB之间的offset相差0-11个SS block的资源元素(Resource Element，RE)。其中，频率上一个子载波及时域上一个符号(symbol)，称为一个RE。
具体而言，由于PRB grid offset信息域中包括4个比特，用于指示同步信号块与非同步信号块的信道或信号之间的物理资源块PRB栅格之间的偏移，该偏移包括0-11个子载波。
因此，PRB grid offset信息域中还包括4个保留值，可以用于指示不存 在RMSI。
此外，此外，在图1所示的通信系统100中，对于初始接入的UE，需要定义一个公共搜索空间(common search space)用于接收公共控制信息。
例如，剩余系统信息(Remaining System Information，RMSI)。
因此，本申请实施例中引入了控制资源集合(Control Resource Set，CORESET)的概念，用于定义承载控制信息的资源集合，UE在该资源集合中检测新空口-物理下行链路控制信道(New Radio-Physical Downlink Control Channel，NR-PDCCH)，以获得承载RMSI的新空口-物理下行共享信道(New Radio-Physical Downlink Shared Channel，NR-PDSCH)的调度信息。CORESET的指示信息承载在NR-PBCH中，用于UE接收RMSI。具体地，CORESET的配置信息主要包含以下信息：频域资源、起始正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号以及时间长度。
进一步地，RMSI的CORESET信息可通过8比特指示。
可以发现，当PRB grid offset信息域指示不存在RMSI时，该CORESET信息域可用于指示同步信号块的频域位置信息，由此便于UE减少盲检测，根据该同步信号块的频域位置信息，从而检测同步信号块中的PBCH以获得RMSI的CORESET信息，接收RMSI。
下面对本申请实施例中，终端设备确定同步信号快的频域位置的方法进行说明：
本申请实施例中，对于NR中的无线频谱，同步信号块的频域位置可以通过同步栅格(raster)来定义。具体地，如下表所示，在不同的频率范围，同步信号块的可能的频域位置通过表中公式来确定。更具体地，通过SSREF来进行编号，并基于SSREF编号进行确定。其中，SSREF表示同步信号块的频域位置。
表1频率范围内SS Block的频域位置与GSCN的关系
Figure PCTCN2018072505-appb-000001
其中，GSCN表示全球同步信道号(Global Synchronization Channel Number)。由此，在确定了同步raster之后，同步信号块的资源映射可进一步根据下表确定。
表2同步栅格与同步信号块的资源元素的映射关系
资源元素索引k 0
SS block的物理资源块的编号n PRB n PRB＝10
由上表可知，同步raster位于同步信号块的20个物理资源块(physical resource block，PRB)中的PRB编号为10的PRB中的编号0的RE。
此外，需要注意的是，对于同步raster，在不同的频带(band)下，同步raster在band内的分布是不一样的。具体地，可通过下表确定。例如，对于band n77，同步raster的编号范围为9460–10079，共620个同步raster。
表3适用于每个频带对应的GSCN
Figure PCTCN2018072505-appb-000002
其中，SS Block SCS为SS Block的子载波间隔(subcarrier spacing，SCS)。GSCN表示全球同步信道号(Global Synchronization Channel Number)。
通过以上分析可以看出，PRB grid offset信息域中的保留值，指示不存在RMSI时，可以通过RMSI的CORESET信息域中的比特指示第二SS block 相对第一SS block的资源信息。由于CORESET信息域包含8比特，通过指示目标同步raster和当前同步信号块对应的同步raster的偏移，可以指示256个同步raster的位置。也可以通过PRB grid offset信息域中的保留值，指示不存在RMSI，并通过PRB grid offset信息域中的保留值，以及RMSI的CORESET信息域中的比特联合指示第二SS block相对第一SS block的资源信息。
表4 band n78的同步栅格的偏移量
保留值 RMSI-PDCCH-配置信息 偏移量
R0 0 +1
R0 1 +2
R0 2 +3
… … …
R0 254 +255
R0 255 +256
R1 0 +257
R1 1 +258
… …  
R1 84 +341
R1 85 +342
R1 86 -1
R1 87 -2
… … …
R1 255 -170
R2 0 -171
R2 1 -172
… … …
R2 170 -341
R2 171 -342
R2 172 保留
… … …
R2 255 保留
R3 0 保留
… … …
R3 255 保留
具体而言，如表4所示，R0，R1，R2是PRB grid offset信息域中的保留值，都可以用于指示不存在RMSI。RMSI的CORESET信息域一共用8bit，可以表示0-255，这两部分信息用于联合指示第二SS block的频域位置信息，频域位置信息指示第二SS block所在的同步raster(同步栅格)相比第一SS  block所在的sync raster的位置偏移的sync raster的个数。应理解，表4仅以band n78为例进行示例性的说明，本申请实施例不限于此。例如，band n78需要指示的同步raster的范围包括-342，-341，…,-1,1,…,341,342。但针对其它band，其同步raster的范围不限于此。
可以发现，假设终端设备支持的频带(band)为n78，且n78的频域范围为3300MHz-3800MHz，同步raster之间的间隔为1.44MHz，且其他同步信号块对应的同步raster的间隔为1，即1.44MHz。
如果一个同步信号块的带宽为20个RB，子载波间隔为30kHz，则同步信号块的带宽为7.2MHz，超过同步raster的间隔1.44MHz。如果采用现有技术中的指示方式，与当前同步信号块相邻的同步信号块在频域位置上可能会与该当前同步信号块发生重叠，进而导致网络设备所指示的同步raster的位置并不会有同步信号块发送，影响传输效率。
例如，网络设备所指示的同步raster与当前同步信号块对应的同步raster的间隔小于同步信号块的带宽。
因此，本申请实施例中，提供了一种确定同步信号块的频域位置的方法，通过限定网络设备所指示的同步raster与当前同步信号块对应的同步raster的间隔，提高终端设备确定同步信号块的频域位置的准确度。
图3是本发明实施例的确定同步信号块的频域位置的方法的示意性流程图。
具体而言，如图3所示，该方法包括：
210，网络设备生成第一信息，该第一信息用于该终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量。
210，该网络设备向终端设备发送该第一信息。
230，该终端设备基于该第二同步栅格，确定该第二同步信号块的频域位置。
简而言之，终端设备接收网络设备发送的第一信息，该终端设备基于该第二同步栅格，确定该第二同步信号块的频域位置。需要注意的是，该偏移量大于或等于同步信号块的带宽；
应理解，该第二同步栅格可以是终端设备基于该第一信息确定的，本申请实施例中对该第二同步栅格的仅仅限定在该第二同步栅格在频域上相对 该第一同步栅格的偏移量大于或等于同步信号块的带宽。
在一个实施例中，该第二同步栅格为该终端设备基于该第一信息确定的、距离该第一同步栅格最近的同步栅格时，保证该第二同步栅格相对该第一同步栅格的该偏移量大于或等于同步信号块的带宽。由此，保证该终端设备基于该第二同步栅格，确定的任何一个第二同步信号块的频域位置与该第一同步栅格之间的偏移量大于或等于同步信号块的带宽。
具体而言，通过规定与当前同步信号块对应的同步raster相邻的同步raster之间的间隔需要大于等于同步信号块的频域带宽。能够有效避免与当前同步信号块相邻的同步信号块在频域位置上与该当前同步信号块发生重叠，进而提高终端设备确定的同步信息块的频域位置的准确度。例如，通过规定与当前同步信号块对应的同步raster相邻的同步raster的位置之前的偏移量，提高终端设备确定的同步信息块的频域位置的准确度。又例如，通过规定与当前同步信号块对应的同步raster相邻的同步raster的位置同步信号块的带宽、相邻同步raster的间隔有关。
本申请实施例中，通过规定该第二同步栅格相对该第一同步栅格之间的偏移量，能够有效提高终端设备确定的同步信息块的频域位置的准确度。
可选地，该偏移量与以下中的至少一项相关：
该同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
可选地，该偏移量为该第二同步栅格相对该第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
可选地，该偏移量对应的同步栅格的个数满足以下公式：
|n|≥W SSB/Δ raster；
其中，该n为该第二同步栅格相对该第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，该W SSB为该同步信号块的带宽。
为了便于对方案的理解，下面以n78为例对终端设备确定该第二同步栅格的实现方式进行说明：
具体而言，且band n78的频域范围为3300MHz-3800MHz，同步raster之间的间隔为1.44MHz，且其他同步信号块对应的同步raster的间隔为1，即1.44MHz。
如果一个同步信号块的带宽为20个RB，子载波间隔为30kHz，则同步 信号块的带宽为7.2MHz，超过同步raster的间隔1.44MHz。
由此，可需要保证该第二同步栅格相对该第一同步栅格的该偏移量(+5或者-5个同步栅格对应的带宽)大于或等于同步信号块的带宽。即可避免与当前同步信号块相邻的同步信号块在频域位置上与该当前同步信号块发生重叠，进而提高传输效率。
例如，终端设备确定同步栅格的偏移量可参考下表确定：
表5本申请实施例中band n78的同步栅格的偏移量
保留值 RMSI-PDCCH-配置信息 偏移量
R0 0 +5
R0 1 +6
R0 2 +7
… … …
R0 255 +260
R1 0 +261
R1 1 +262
… …  
R1 80 +341
R1 81 +342
R1 82 -5
R1 83 -6
… … …
R1 255 -178
R2 0 -179
R2 1 -180
… … …
R2 162 -341
R2 163 -342
R2 164 Reserved
… … …
R2 255 Reserved
R3 0 Reserved
… … …
R3 255 Reserved
可以看出，表5中，该第二同步栅格为该终端设备基于该第一信息确定的、距离该第一同步栅格最近的同步栅格时，保证该第二同步栅格相对该第一同步栅格的该偏移量(+5或者-5个同步栅格对应的带宽)大于或等于同步信号块的带宽。由此，保证该终端设备基于该第二同步栅格，确定的任何 一个第二同步信号块的频域位置与该第一同步栅格之间的偏移量大于或等于同步信号块的带宽。
图4是本发明实施例的终端设备的示意性框图。
如图4所示，该终端设备300包括：
收发单元310，用于接收网络设备发送的第一信息，该第一信息用于该终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，该偏移量大于或等于同步信号块的带宽；
处理单元320，用于基于该第二同步栅格，确定该第二同步信号块的频域位置。
可选地，该偏移量与以下中的至少一项相关：
该同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
可选地，该偏移量为该第二同步栅格相对该第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
可选地，该偏移量对应的同步栅格的个数满足以下公式：
|n|≥W SSB/Δ raster；
其中，该n为该第二同步栅格相对该第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，该W SSB为该同步信号块的带宽。
本发明实施例中，收发单元310可由收发器实现，处理单元320可由处理器实现。如图5所示，终端设备400可以包括处理器410、收发器420和存储器430。其中，存储器430可以用于存储指示信息，还可以用于存储处理器410执行的代码、指令等。终端设备400中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图5所示的终端设备400能够实现前述图3的方法实施例中由终端设备所实现的各个过程，为避免重复，这里不再赘述。
图6是本发明实施例的网络设备的示意性框图。
具体而言，如图6所示，该网络设备500包括：
处理单元510，用于生成第一信息，该第一信息用于该终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第 一同步栅格的偏移量，其中，该偏移量大于或等于同步信号块的带宽；以便该终端设备基于该第二同步栅格，确定该第二同步信号块的频域位置；
收发单元520，用于向该终端设备发送该第一信息。
可选地，该偏移量与以下中的至少一项相关：
该同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
可选地，该偏移量为该第二同步栅格相对该第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
可选地，该偏移量对应的同步栅格的个数满足以下公式：
|n|≥W SSB/Δ raster；
其中，该n为该第二同步栅格相对该第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，该W SSB为该同步信号块的带宽。
本发明实施例中，处理单元510可由收发器实现，收发单元520可由处理器实现。如图7所示，网络设备600可以包括处理器610、收发器620和存储器630。其中，存储器630可以用于存储指示信息，还可以用于存储处理器610执行的代码、指令等。网络设备600中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图7所示的网络设备600能够实现前述图3的方法实施例中由网络设备所实现的各个过程，为避免重复，这里不再赘述。
也就是说，本发明实施例中的方法实施例可以由处理器和收发器实现。
在实现过程中，本发明实施例中的方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。更具体地，结合本发明实施例公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域的成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
应理解，本发明实施例中提及的处理器可能是一种集成电路芯片，具有信号的处理能力，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。例如，上述的处理器可以是通用处理器、数字信号处理器(digital  signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等等。此外，通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
此外，本发明实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。应理解，上述存储器为示例性但不是限制性说明，例如，本发明实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
最后，需要注意的是，在本发明实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明实施例。
例如，在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”、“上述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明实施例的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应 过程，在此不再赘述。
在本申请提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例的目的。
另外，在本发明实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上内容，仅为本发明实施例的具体实施方式，但本发明实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明实施例的保护范围之内。因此，本发明实施例的保护范围应以权利要求的保护范围为准。

Claims (16)

  1. 一种确定同步信号块的频域位置的方法，其特征在于，包括：
    终端设备接收网络设备发送的第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；
    所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置。
  2. 根据权利要求1所述的方法，其特征在于，所述偏移量与以下中的至少一项相关：
    所述同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
  3. 根据权利要求1或2所述的方法，其特征在于，所述偏移量为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述偏移量对应的同步栅格的个数满足以下公式：
    |n|≥W SSB/Δ raster；
    其中，所述n为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，所述W SSB为所述同步信号块的带宽。
  5. 一种确定同步信号块的频域位置的方法，其特征在于，包括：
    网络设备生成第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；以便所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置；
    所述网络设备向所述终端设备发送所述第一信息。
  6. 根据权利要求5所述的方法，其特征在于，所述偏移量与以下中的至少一项相关：
    所述同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
  7. 根据权利要求5或6所述的方法，其特征在于，所述偏移量为所述第 二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
  8. 根据权利要求7所述的方法，其特征在于，所述偏移量对应的同步栅格的个数满足以下公式：
    |n|≥W SSB/Δ raster；
    其中，所述n为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，所述W SSB为所述同步信号块的带宽。
  9. 一种终端设备，其特征在于，包括：
    收发单元，用于接收网络设备发送的第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；
    处理单元，用于基于所述第二同步栅格，确定所述第二同步信号块的频域位置。
  10. 根据权利要求9所述的终端设备，其特征在于，所述偏移量与以下中的至少一项相关：
    所述同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
  11. 根据权利要求9或10所述的终端设备，其特征在于，所述偏移量为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
  12. 根据权利要求9至11中任一项所述的终端设备，其特征在于，所述偏移量对应的同步栅格的个数满足以下公式：
    |n|≥W SSB/Δ raster；
    其中，所述n为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，所述W SSB为所述同步信号块的带宽。
  13. 一种网络设备，其特征在于，包括：
    处理单元，用于生成第一信息，所述第一信息用于所述终端设备确定第二同步信号块所属的第二同步栅格在频域上相对当前同步信号块所属的第一同步栅格的偏移量，其中，所述偏移量大于或等于同步信号块的带宽；以 便所述终端设备基于所述第二同步栅格，确定所述第二同步信号块的频域位置；
    收发单元，用于向所述终端设备发送所述第一信息。
  14. 根据权利要求13所述的网络设备，其特征在于，所述偏移量与以下中的至少一项相关：
    所述同步信号块的带宽、同步栅格之间的间隔带宽以及频带范围。
  15. 根据权利要求13或14所述的网络设备，其特征在于，所述偏移量为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数对应的带宽。
  16. 根据权利要求15所述的网络设备，其特征在于，所述偏移量对应的同步栅格的个数满足以下公式：
    |n|≥W SSB/Δ raster；
    其中，所述n为所述第二同步栅格相对所述第一同步栅格在频域上增加或者减少的同步栅格的个数，Δ raster为同步栅格之间的间隔带宽，所述W SSB为所述同步信号块的带宽。
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