WO2023083229A1 - 同步信号块的频域位置确定方法及系统 - Google Patents

同步信号块的频域位置确定方法及系统 Download PDF

Info

Publication number
WO2023083229A1
WO2023083229A1 PCT/CN2022/130984 CN2022130984W WO2023083229A1 WO 2023083229 A1 WO2023083229 A1 WO 2023083229A1 CN 2022130984 W CN2022130984 W CN 2022130984W WO 2023083229 A1 WO2023083229 A1 WO 2023083229A1
Authority
WO
WIPO (PCT)
Prior art keywords
ssb
value
parameter
ncd
falls
Prior art date
Application number
PCT/CN2022/130984
Other languages
English (en)
French (fr)
Inventor
韩梦捷
Original Assignee
上海星思半导体有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111319831.1A external-priority patent/CN114126030B/zh
Priority claimed from CN202111466374.9A external-priority patent/CN114125998B/zh
Priority claimed from CN202111475189.6A external-priority patent/CN114125999B/zh
Application filed by 上海星思半导体有限责任公司 filed Critical 上海星思半导体有限责任公司
Publication of WO2023083229A1 publication Critical patent/WO2023083229A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the invention relates to a method and system for determining the frequency domain position of a synchronous signal block, belonging to the technical field of communication.
  • the terminal device searches and scans the Synchronization Signal Block (SSB, Synchronization Signal and PBCH block) to access the cell and obtain the cell information of the target cell.
  • SSB Synchronization Signal Block
  • the synchronization grid can be used to indicate the frequency domain position, and the frequency domain position of the SSB is associated with the GSCN (Global Synchronization Channel Number, Global Synchronization Channel Number), Table 5.4.3.1 in 3GPP TS 38.104 (V17.3.0) -1 shows this association, as shown in Table 1:
  • each synchronization grid corresponds to a Global Synchronization Channel number, and the specific corresponding relationship is shown in the second and third columns of Table 1, where the granularity of the Global Synchronization Channel numbers in different frequency ranges is different.
  • the synchronization signal block For the synchronization signal block, it can be divided into two categories, namely cell definition - synchronization signal block (CD-SSB, Cell Define SSB) and non-cell definition - synchronization signal block (NCD-SSB, None Cell Define SSB), cell definition - synchronization
  • CD-SSB Cell Definition - synchronization signal block
  • NCD-SSB Non-cell definition - synchronization signal block
  • the signal block is mainly used for the initial access of the cell, which contains the system information block 1 (SIB1, SystemInformationBlock 1) information of the access cell, rather than the definition of the cell - the synchronization signal block is mainly used for the initial access of the non-cell, such as Measurement.
  • SIB1 SystemInformationBlock 1
  • the synchronization signal block is mainly used for the initial access of the non-cell, such as Measurement.
  • the operator When deploying the synchronization signal block, the operator generally deploys the non-cell definition-synchronization signal
  • the terminal searches for a cell definition-synchronization signal block on the synchronization grid, there is a certain probability that the searched synchronization signal block is a non-cell definition-synchronization signal block.
  • the non-cell definition-synchronization signal block does not contain the system information block 1 information of the access target cell, the terminal needs to find the target cell definition-synchronization signal block through the non-cell definition-synchronization signal block.
  • the synchronization signal block includes a master information block (MIB, Master Information Block) and a PBCH payload physical broadcast channel load, and the master information block is transmitted through the physical broadcast channel.
  • the physical broadcast channel payload is formed at the physical layer, occupies 8 bits, and is used to represent information such as system frame number, half-frame indication, and candidate sync signal block index.
  • the parameter "ssb-Subcarrieroffset" of the main information block indicates the offset of the resource element level (RE-level, Resource Element) between the synchronization signal block and the control resource set #0 (CORESET#0, Control-Resource Set#0), in In NR (New Radio, new air interface) frequency range 2 (FR2, Frequency Range 2), when the terminal device demodulates the value to 12 or 13, it means that the synchronization signal block is a non-cell definition-synchronization signal block, that is It cannot be used for the initial access of the cell.
  • NR New Radio, new air interface
  • the terminal needs to determine the offset of the global synchronization channel number between the cell definition-synchronization signal block and the non-cell definition-synchronization signal block according to the controlResourceSetZero and searchSpaceZero in the parameter "pdcch-configSIB1" in the main information block
  • the target cell definition-synchronization signal block is found through the non-cell definition-synchronization signal block, wherein the specific mapping relationship is shown in Table 2:
  • the value of is between -256 and 256, because the frequency band of the fifth generation mobile communication system is in the frequency range 2 (FR2, Frequency Range 2) - 24.25GHz ⁇ 52.6GHz, in this frequency range, The number of sync grids in all bands does not exceed 256.
  • the absolute value is higher than 256 Unable to be directed. This will cause the terminal device to increase its delay in accessing the cell because it cannot find a suitable cell definition-synchronization signal block when it searches for a non-cell definition-synchronization signal block.
  • the purpose of the present invention is to overcome the deficiencies in the prior art and provide a method and system for determining the frequency domain position of a synchronization signal block, which aims to shorten the time for a terminal device to obtain a corresponding CD-SSB based on the searched NCD-SSB, and Shorten the time delay for terminal equipment to access the cell.
  • the present invention is achieved by adopting the following technical solutions:
  • a method for determining a frequency-domain position of a synchronization signal block comprising:
  • M is an integer not less than 2
  • the value of the number of synchronization grids in the frequency band falls into (256 ⁇ (M-1), 256 ⁇ M]
  • the minimum frequency value of the frequency band is not less than 52.6GHz;
  • the GSCN NCD-SSB According to the frequency domain position of the synchronization grid where the NCD-SSB is located, the GSCN NCD-SSB and the Determine the frequency domain position GSCN CD-SSB of the synchronization grid where the CD-SSB is located.
  • a cell broadcast method comprising:
  • the corresponding frequency domain position offset The value of falls into [1, 256 ⁇ M], where, the Representing the frequency domain position offset between the cell definition synchronization signal block CD-SSB and the synchronization grid where the NCD-SSB is located, M is an integer not less than 2, and the number of synchronization grids in the frequency band falls into ( 256 ⁇ (M ⁇ 1), 256 ⁇ M].
  • a system for determining the frequency domain position of a synchronization signal block comprising:
  • the first determination module is configured to determine the corresponding frequency domain position offset when a non-cell-defined synchronization signal block NCD-SSB is searched in the frequency band Among them, the Characterizes the frequency domain position offset between the cell-defined synchronization signal block CD-SSB and the synchronization grid where the NCD-SSB is located, The value of falls into [1, 256 ⁇ M], M is an integer not less than 2, and the value of the number of synchronization grids in the frequency band falls into (256 ⁇ (M-1), 256 ⁇ M], The minimum frequency value of the frequency band is not less than 52.6GHz;
  • the second determining module is used for determining the frequency domain position of the GSCN NCD-SSB and the Determine the frequency domain position GSCN CD-SSB of the synchronization grid where the CD-SSB is located.
  • a cell broadcast system comprising:
  • the broadcast module is used to broadcast the synchronization signal block SSB in the frequency band;
  • the corresponding frequency domain position offset The value of falls into [1, 256 ⁇ M], where, the Representing the frequency domain position offset between the cell definition synchronization signal block CD-SSB and the synchronization grid where the NCD-SSB is located, M is an integer not less than 2, and the number of synchronization grids in the frequency band falls into ( 256 ⁇ (M ⁇ 1), 256 ⁇ M].
  • An electronic device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the computer program, any method for determining the frequency domain position of a synchronization signal block described above is implemented , or any one of the above cell broadcast methods.
  • a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, any of the above methods for determining the frequency domain position of a synchronization signal block, or any of the above cell broadcast methods .
  • the beneficial effects achieved by the method and system for determining the frequency domain position of the synchronization signal block include: the present invention realizes that when the number of synchronization grids in the frequency band is greater than 256 , based on the number of synchronous rasters in the frequency band, for The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band Instructions, so that the frequency domain position of the corresponding CD-SSB can be determined based on the searched NCD-SSB, and the time for the terminal device to obtain the CD-SSB can be shortened, and the time delay for the terminal device to access the cell can be shortened.
  • Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for determining a frequency domain position of a synchronization signal block according to Embodiment 1 of the present invention.
  • FIG. 3 is a block diagram of a system for determining a frequency-domain position of a synchronization signal block according to Embodiment 3 of the present invention.
  • FIG. 4 is a schematic structural diagram of an electronic device according to Embodiment 5 of the present invention.
  • FIG. 5 is a schematic diagram of RE level offsets of SSB and type0-PDCCH according to Embodiment 8 of the present invention.
  • FIG. 6 is a schematic diagram of a corresponding relationship between subcarrier offset parameters and frequency domain position offsets within the frequency range of FRi in the prior art.
  • FIG. 7 is a schematic diagram of a corresponding relationship between subcarrier offset parameters and frequency domain position offsets within the FR2 frequency range in the prior art.
  • FIG. 8 is a structural block diagram of a communication system provided by an embodiment of the present application.
  • FIG. 9 is a flow chart of a cell access method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of RE level offsets of SSB and type0-PDCCH provided by the embodiment of the present application.
  • FIG. 11 is a schematic diagram of RE level offsets of SSB and type0-PDCCH provided by the embodiment of the present application.
  • FIG. 12 is a schematic diagram of RE level offsets of SSB and type0-PDCCH provided by the embodiment of the present application.
  • the information broadcast method and cell access method in the embodiment of the present application can be applied to various communication systems, for example, Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system , Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex) , FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS) or 5G system, etc.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE Frequency Division Duplex Frequency Division Duplex
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • Universal Mobile Telecommunications System Universal Mobile Telecommunications System
  • Universal Mobile Telecommunications System Universal Mobile Telecommunications
  • the communication system 100 includes a base station 10 and a terminal device 20.
  • the base station 10 can provide communication coverage for an area and can communicate with the terminal device 20 located in the area.
  • the base station 10 may be a base station in a GSM system or a CDMA system, may also be a base station in a WCDMA system, may also be an evolved base station in an LTE system, or may be a base station in a 5G system.
  • the terminal equipment 20 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or user device.
  • the access terminal 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), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolved PLMNs, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Synchronization signal block Common channels and signals in the NR system, such as synchronization signal (synchronization signal, SS) and physical broadcast channel (Physical Broadcast Channel, PBCH), need to cover the entire cell through multi-beam scanning, which is convenient The terminal equipment in the cell receives it.
  • the multi-beam transmission of the synchronization signal is realized by defining the SS/PBCH burst set (burst set).
  • One SS burst set contains one or more SS/PBCH blocks (referred to as the synchronization signal block SSB), and one SSB is used to carry one beam synchronization signal and physical broadcast channel.
  • Synchronization Raster (synch raster):
  • the synchronization raster is the basic frequency domain position used to configure the SSB.
  • the step size and density of the synchronization raster determine the time for the terminal device to perform the initial cell search.
  • the terminal device When the terminal device is just turned on for cell search, it can only detect the SSB signal according to the frequency band supported by the operator and the terminal device, and perform downlink time-frequency synchronization. Due to the small granularity of the global frequency grid, the NR absolute frequency point (NR Absolute Radio Frequency Channel Number, NR-ARFCN) (used to encode the frequency domain range of the reference frequency) has a large value range. If blind detection is performed directly based on the global frequency grid, the synchronization delay will be relatively large. Therefore, in order to effectively reduce the synchronization delay in this process, the concept of synchronization grid is defined, and the search range is limited by the Global Synchronization Channel Number (GSCN).
  • GSCN Global Synchronization Channel Number
  • FIG. 2 shows this embodiment Flowchart of the frequency-domain position determination method for .
  • the frequency domain position determination method of this embodiment includes:
  • the GSCN NCD-SSB According to the frequency domain position of the synchronization grid where the NCD-SSB is located, the GSCN NCD-SSB and Determine the frequency domain position GSCN CD-SSB of the synchronization grid where the CD-SSB is located.
  • the value of is in [1, 256 ⁇ M], where M is an integer not less than 2, and the number of synchronous grids in the frequency band is in (256 ⁇ (M-1), 256 ⁇ M].
  • the number of synchronous grids in the frequency band is greater than 256, based on the number of synchronous grids in the frequency band, the The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band instructions.
  • the indication from the searched synchronous grid of the NCD-SSB to the synchronous grid of the corresponding CD-SSB is realized, thereby shortening the time for the terminal device to obtain the CD-SSB , and shorten the time delay for the terminal equipment to access the cell.
  • the searched SSB can be determined according to the subcarrier offset parameter K SSB between the subcarrier zero of the CRB (Common Resource Block, common resource block) and the subcarrier zero of the SSB Whether it is NCD-SSB, and if the searched SSB is NCD-SSB, the actual direction of the frequency domain position offset can be further determined according to the value of K SSB .
  • K SSB P 1
  • the value range of is [1, 256 ⁇ M]
  • K SSB P 2
  • the value range of is [-256 ⁇ M, -1]. Therefore, on the basis of this embodiment, only two values of K SSB can be configured to indicate pdcch-configSIB1 (configuration parameter of Physical Broadcast Control Channel-System Information Block 1) and The mapping relationship between the two sets.
  • the SSB is determined to be CD-SSB, and the CD-SSB is demodulated to attempt to initiate cell access.
  • K SSB When the value of K SSB falls into [p 0 +1, p 0 +2M], determine the SSB as NCD-SSB, determine the target CD-SSB according to the NCD-SSB, and demodulate the target CD-SSB to try to initiate cell access .
  • K SSB can be configured according to the difference between the subcarrier spacing of SSB and the corresponding subcarrier spacing of type0-PDCCH.
  • K SSB can be configured as follows: when K SSB takes the value [0, p 0 ], the SSB is CD-SSB, and the terminal device can directly try to access the cell; when K SSB takes the value [p 0 + 1.
  • p 0 +2M the SSB is NCD-SSB, and the terminal device can find a suitable CD-SSB based on NCD-SSB and KSSB and try to access the cell.
  • both p 0 and M are positive integers, and the value of p 0 can also be determined according to the difference between the subcarrier spacing of the SSB and the subcarrier spacing of the corresponding type0-PDCCH; at the same time, the number of synchronization grids in the frequency band The values fall into (256 ⁇ (M-1), 256 ⁇ M].
  • the indication parameter is obtained through a combination of the subcarrier offset parameter K SSB and the extended parameter A.
  • the value of the subcarrier offset parameter K SSB is the subcarrier offset representing the SSB.
  • the terminal device When the terminal device tries to access a cell, it parses the subcarrier offset parameter K SSB and the extended parameter A in the SSB. When the value of the extended parameter A is empty or falls into the first range, and the subcarrier offset parameter K SSB When the value or the concatenated value of the subcarrier offset parameter K SSB and the extended parameter A falls within the second range, the type of the SSB is determined to be CD-SSB, and the CD-SSB is demodulated to attempt to initiate cell access.
  • the value of the extended parameter A falls into the third range
  • the value of the subcarrier offset parameter K SSB or the value after the concatenation of the subcarrier offset parameter K SSB and the extended parameter A falls into the fourth range
  • determine The type of SSB is NCD-SSB
  • the target CD-SSB is determined according to the NCD-SSB
  • the target CD-SSB is demodulated to attempt to initiate cell access.
  • the splicing method of the subcarrier offset parameter K SSB and the extended parameter A is still that the extended parameter A occupies high-order bits, while the subcarrier offset parameter K SSB occupies low-order bits, and the extended parameter A occupies 1 bit, The subcarrier offset parameter K SSB occupies 4 bits.
  • the value of the extended parameter A is empty or falls within the first range (such as the first range is 0)
  • the value of the subcarrier offset parameter K SSB falls into the second range (such as the second range is 0-11) or the value of subcarrier offset parameter K SSB concatenated with extended parameter A falls into the second range (such as the second range is 0-11)
  • the type of SSB is CD- SSB
  • cell access can be performed directly according to CD-SSB.
  • the type of SSB is determined to be NCD-SSB, and the target can be obtained according to NCD-SSB CD-SSB, and then perform cell access according to the target CD-SSB.
  • the specific value range of the second range can be determined according to the subcarrier spacing corresponding to the SSB and CORESET#0 in actual situations.
  • the indication parameter is obtained by combining the subcarrier offset parameter K SSB and the extended parameter A, so that the SSB type can be preliminarily judged directly according to the value range of the extended parameter A.
  • the interval between two adjacent CD-SSBs can be configured as M-1, so that the interval between two adjacent GSCN CD-SSBs is M-1, and then there are adjacent two The interval between them is M-1. Based on, It can be determined according to the following formula:
  • the value of S falls into [1, M], the control resource set zero controlResourceSetZero and the search space zero searchSpaceZero are included in pdcch-configSIB1 and occupy 4 bits respectively.
  • this embodiment can adapt to the change of the number of synchronization grids in the frequency band under the condition that the configuration of PDCCH-configSIB1 corresponding to the SSB remains unchanged, and realize The value range is changed, and only two values of K SSB need to be configured to indicate pdcch-configSIB1 and The two sets of mapping relationships between can be determined based on the K SSB and pdcch-configSIB1 corresponding to the searched NCD-SSB to determine the frequency domain position of the GSCN CD-SSB , so as to realize cell access.
  • the method for determining the frequency domain position in this embodiment is applicable to the case where the number of synchronization grids in the frequency band is greater than 256. At this time, the lowest frequency of the frequency band may not be less than 52.6GHz. For example, the frequency domain position determination method of this embodiment may be applicable to the frequency band 52.6GHz-71GHz. According to the meeting conclusion of RAN1105e, within the frequency range of 52.6GHz-71GHz, the synchronization The number of rasters cannot exceed 665.
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • the The direct extension of the value range that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band Instructions, so that the frequency domain position of the corresponding CD-SSB can be determined based on the searched NCD-SSB, and the time for the terminal device to obtain the CD-SSB can be shortened, and the time delay for the terminal device to access the cell can be shortened.
  • This embodiment provides a cell broadcast method.
  • the cell broadcast method in this embodiment can be applied to network devices such as base stations, and specifically may include a step of broadcasting a synchronization signal block SSB in a frequency band.
  • the corresponding frequency domain position offset when the SSB defines NCD-SSB for a non-cell, the corresponding frequency domain position offset The value of falls into [1, 256 ⁇ M], where, Characterize the frequency domain position offset of the synchronization grid where the synchronization signal block CD-SSB and NCD-SSB are located, M is an integer not less than 2, and the number of synchronization grids in the frequency band falls into (256 ⁇ (M -1), 256 ⁇ M], the minimum frequency value of the frequency band is not less than 52.6GHz.
  • the number of synchronous grids in the frequency band is greater than 256, based on the number of synchronous grids in the frequency band, the The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band instructions.
  • the searched synchronous grid of the NCD-SSB is indicated to the corresponding synchronous grid of the CD-SSB.
  • SSB time, and shorten the time delay for terminal equipment to access the cell.
  • the broadcasted SSB may be indicated according to the K SSB used to characterize the subcarrier offset between subcarrier zero of CRB (Common Resource Block, common resource block) and subcarrier zero of SSB Whether it is NCD-SSB, and if the broadcasted SSB is NCD-SSB, the actual direction of the frequency domain position offset can be further determined according to the value of K SSB .
  • K SSB P 1
  • the value range of is [1, 256 ⁇ M]
  • K SSB P 2
  • the value range of is [-256 ⁇ M, -1]. Therefore, on the basis of this embodiment, only two values of K SSB can be configured to indicate pdcch-configSIB1 (configuration parameter of Physical Broadcast Control Channel-System Information Block 1) and The mapping relationship between the two sets.
  • the above-mentioned SSB is different from the subcarrier spacing of the corresponding type 0-Physical Downlink Control Channel type0-PDCCH, and the above-mentioned SSB includes a subcarrier offset parameter K SSB used to indicate the subcarrier offset of the above-mentioned SSB, and the above-mentioned subcarrier
  • the value of the carrier offset parameter K SSB is configured according to the difference between the subcarrier spacing of the above SSB and the corresponding subcarrier spacing of the above type0-PDCCH;
  • the type that characterizes the above-mentioned SSB is CD-SSB, where p 0 is a positive integer, and the value of p 0 is based on the above-mentioned SSB
  • the difference between the subcarrier spacing of the subcarrier spacing and the corresponding subcarrier spacing of the above-mentioned type0-PDCCH is determined;
  • the value of p 0 is the largest integer value less than 12/j, where j represents the ratio of the above-mentioned SSB to the subcarrier spacing corresponding to the above-mentioned type0-PDCCH.
  • the above-mentioned SSB includes an indication parameter for indicating the type of the above-mentioned SSB, and the above-mentioned indication parameter is obtained by concatenating the subcarrier offset parameter K SSB and the extended parameter A;
  • the value of the above-mentioned indication parameter falls within the first range, determine that the type of the above-mentioned SSB is CD-SSB, and demodulate the above-mentioned CD-SSB to try to initiate cell access, wherein the value of the above-mentioned indication parameter represents the sub-type of the above-mentioned SSB carrier offset;
  • the corresponding The value of falls into [256 ⁇ i+1, 256 ⁇ (i+1)], wherein, p 1 is the minimum value of the above-mentioned indication parameter when the type of the above-mentioned SSB is NCD-SSB, i is an integer, and, 0 ⁇ i ⁇ M-1;
  • the above-mentioned SSB includes an indication parameter for indicating the type of the above-mentioned SSB, and the above-mentioned indication parameter is obtained by combining the subcarrier offset parameter K SSB and the extended parameter A;
  • the value of the above-mentioned extended parameter A is empty or falls into the third range, and the value of the above-mentioned subcarrier offset parameter K SSB or the value of the above-mentioned subcarrier offset parameter K SSB concatenated with the above-mentioned extended parameter A falls within
  • the type of the above-mentioned SSB is determined to be CD-SSB, and the above-mentioned CD-SSB is demodulated, wherein the value of the above-mentioned subcarrier offset parameter K SSB represents the subcarrier offset of the above-mentioned SSB;
  • the corresponding The value of falls into [256 ⁇ i+1, 256 ⁇ (i+1)], where p 2 is the minimum value of the above-mentioned subcarrier offset parameter K S S B when the type of the above-mentioned SSB is NCD-SSB Or the minimum value after splicing the above subcarrier offset parameter K SSB and the above extended parameter A, i is an integer, and, 0 ⁇ i ⁇ M-1;
  • CD-SSBs can be broadcast at intervals of M-1 synchronization grids in the frequency band, that is, the interval between two adjacent GSCN CD-SSBs is configured as M-1, so that There are two adjacent The interval between them is M-1. Based on, It can be determined according to the following formula:
  • the value of S falls into [1, M], the control resource set zero controlResourceSetZero and the search space zero searchSpaceZero are included in pdcch-configSIB1 and occupy 4 bits respectively.
  • this embodiment can adapt to the change of the number of synchronous grids in the frequency band under the condition that the pdcch-configSIB1 corresponding to the SSB remains unchanged, and realize The value range is changed, and only two values of K SSB need to be configured to indicate pdcch-configSIB1 and The two sets of mapping relationships between can be determined based on the K SSB and pdcch-configSIB1 corresponding to the searched NCD-SSB to determine the frequency domain position of the GSCN CD-SSB , so as to realize cell access.
  • the cell broadcasting method in this embodiment is applicable to the case where the number of synchronization grids in the frequency band is greater than 256. At this time, the lowest frequency of the frequency band may not be less than 52.6 GHz. For example, the cell broadcast method in this embodiment may be applicable to the frequency band 52.6 GHz-71 GHz. The number cannot exceed 665.
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • the terminal device when the number of synchronous grids in the frequency band is greater than 256, based on the number of synchronous grids in the frequency band, the The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band Instructions, so that the terminal device can determine the frequency domain position of the corresponding CD-SSB based on the searched NCD-SSB, thereby shortening the time for the terminal device to obtain the CD-SSB and shortening the time delay for the terminal device to access the cell.
  • the content in this embodiment is correspondingly the same as the method on the network side or the method on the terminal side, so the same parts will not be repeated here.
  • This embodiment provides a system for determining the frequency domain position of a synchronization signal block, and the system for determining the frequency domain position of this embodiment can be applied to terminal devices such as mobile phones, tablet computers, and wearable devices.
  • FIG. 3 shows this embodiment Block diagram of the frequency domain position determination system.
  • the frequency domain position determination system of this embodiment includes:
  • the first determination module 301 is configured to determine the corresponding frequency domain position offset when a non-cell-defined synchronization signal block NCD-SSB is searched in the frequency band
  • the second determining module 302 is configured to use the frequency domain position GSCN NCD-SSB and Determine the frequency domain position GSCN CD-SSB of the synchronization grid where the CD-SSB is located.
  • the value of is in [1, 256 ⁇ M], where M is an integer not less than 2, and the number of synchronous grids in the frequency band is in (256 ⁇ (M-1), 256 ⁇ M].
  • the number of synchronous grids in the frequency band is greater than 256, based on the number of synchronous grids in the frequency band, the The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band instructions.
  • the indication from the searched synchronous grid of the NCD-SSB to the synchronous grid of the corresponding CD-SSB is realized, thereby shortening the time for the terminal device to obtain the CD-SSB , and shorten the time delay for the terminal equipment to access the cell.
  • the first determination module 301 may be based on K SSB used to characterize the subcarrier offset between subcarrier zero of CRB (Common Resource Block, common resource block) and subcarrier zero of SSB It is determined whether the searched SSB is NCD-SSB, and if the searched SSB is NCD-SSB, the actual direction of the frequency domain position offset can be further determined according to the value of K SSB .
  • K SSB P 1
  • the value range of is [1, 256 ⁇ M]
  • K SSB P 2
  • the value range of is [-256 ⁇ M, -1]. Therefore, on the basis of this embodiment, only two values of K SSB can be configured to indicate pdcch-configSIB1 (configuration parameter of Physical Broadcast Control Channel-System Information Block 1) and The mapping relationship between the two sets.
  • the interval between two adjacent CD-SSBs can be configured as M-1, so that the interval between two adjacent GSCN CD-SSBs determined by the second determination module 302 is M-1, and then there are two adjacent The interval between them is M-1.
  • the first determining module 301 can determine according to the following formula
  • the value of S falls into [1, M], the control resource set zero controlResourceSetZero and the search space zero searchSpaceZero are included in pdcch-configSIB1 and occupy 4 bits respectively.
  • this embodiment can adapt to the change of the number of synchronous grids in the frequency band under the condition that the pdcch-configSIB1 corresponding to the SSB remains unchanged, and realize The value range is changed, and only two values of K SSB need to be configured to indicate pdcch-configSIB1 and The two sets of mapping relationships between can be determined based on the K SSB and pdcch-configSIB1 corresponding to the searched NCD-SSB to determine the frequency domain position of the GSCN CD-SSB , so as to realize cell access.
  • the system for determining the position in the frequency domain of this embodiment is applicable to the case where the number of synchronous grids in the frequency band is greater than 256. At this time, the lowest frequency of the frequency band may not be less than 52.6GHz. For example, the frequency domain position determination system of this embodiment may be applicable to the frequency band 52.6GHz-71GHz. The number of rasters cannot exceed 665.
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • the The direct extension of the value range that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band Instructions, so that the frequency domain position of the corresponding CD-SSB can be determined based on the searched NCD-SSB, and the time for the terminal device to obtain the CD-SSB can be shortened, and the time delay for the terminal device to access the cell can be shortened.
  • the content in this embodiment is correspondingly the same as the method on the network side or the method on the terminal side, so the same parts will not be repeated here.
  • This embodiment provides a cell broadcast system.
  • the cell broadcast system in this embodiment can be applied to network devices such as base stations, and can specifically include a broadcast module for broadcasting a synchronization signal block SSB within a frequency band.
  • the corresponding frequency domain position offset when the SSB defines NCD-SSB for a non-cell, the corresponding frequency domain position offset The value of falls into [1, 256 ⁇ M], where, Characterizes the frequency domain position offset of the synchronization grid where the synchronization signal block CD-SSB and NCD-SSB are located, M is an integer not less than 2, and the number of synchronization grids in the frequency band falls into (256 ⁇ (M -1), 256 ⁇ M].
  • the number of synchronous grids in the frequency band is greater than 256, based on the number of synchronous grids in the frequency band, the The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band instructions.
  • the searched synchronous grid of the NCD-SSB is indicated to the corresponding synchronous grid of the CD-SSB.
  • SSB time, and shorten the time delay for terminal equipment to access the cell.
  • the broadcasted SSB can be indicated according to the subcarrier offset parameter K SSB between the subcarrier zero of the CRB (Common Resource Block, common resource block) and the subcarrier zero of the SSB Whether it is NCD-SSB, and if the broadcasted SSB is NCD-SSB, the actual direction of the frequency domain position offset can be further determined according to the value of K SSB .
  • K SSB P 1
  • the value range of is [1, 256 ⁇ M]
  • K SSB P 2
  • the value range of is [-256 ⁇ M, -1]. Therefore, on the basis of this embodiment, only two values of K SSB can be configured to indicate pdcch-configSIB1 (configuration parameter of Physical Broadcast Control Channel-System Information Block 1) and The mapping relationship between the two sets.
  • the broadcast module can broadcast CD-SSBs at intervals of M-1 synchronization grids in the frequency band, that is, configure the interval between two adjacent GSCN CD-SSBs to be M-1 , so that there are two adjacent The interval between them is M-1. Based on, It can be determined according to the following formula:
  • the value of S falls into [1, M], the control resource set zero controlResourceSetZero and the search space zero searchSpaceZero are included in pdcch-configSIB1 and occupy 4 bits respectively.
  • this embodiment can adapt to the change of the number of synchronous grids in the frequency band under the condition that the pdcch-configSIB1 corresponding to the SSB remains unchanged, and realize The value range is changed, and only two values of K SSB need to be configured to indicate pdcch-configSIB1 and The two sets of mapping relationships between can be determined based on the K SSB and pdcch-configSIB1 corresponding to the searched NCD-SSB to determine the frequency domain position of the GSCN CD-SSB , so as to realize cell access.
  • the cell broadcast system in this embodiment is applicable to the case where the number of synchronization grids in the frequency band is greater than 256. At this time, the lowest frequency of the frequency band may not be less than 52.6GHz. For example, the cell broadcasting system of this embodiment may be applicable to the frequency band 52.6GHz-71GHz. According to the meeting conclusion of RAN1105e, within the frequency range of 52.6GHz-71GHz, the synchronization The number cannot exceed 665.
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1111
  • searchSpaceZero is configured as 1111
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • controlResourceSetZero is configured as 1000
  • searchSpaceZero is configured as 0001
  • K SSB is configured as P 1
  • the terminal device when the number of synchronous grids in the frequency band is greater than 256, based on the number of synchronous grids in the frequency band, the The direct extension of the value range, that is, the frequency domain position offset of the synchronization grid where CD-SSB and NCD-SSB are located can be realized in this frequency band Instructions, so that the terminal device can determine the frequency domain position of the corresponding CD-SSB based on the searched NCD-SSB, thereby shortening the time for the terminal device to obtain the CD-SSB and shortening the time delay for the terminal device to access the cell.
  • the content in this embodiment is correspondingly the same as the method on the network side or the method on the terminal side, so the same parts will not be repeated here.
  • the electronic device may be expressed in the form of a computing device (for example, it may be a server device), and includes a memory, a processor, and a computer program stored in the memory and operable on the processor.
  • the processor executes the computer program, the method for determining the frequency domain position of the synchronization signal block provided in Embodiment 1 can be implemented.
  • the electronic device can be a terminal device such as a mobile phone, a tablet computer, or a wearable device; or, the processor executes the computer program.
  • the cell broadcasting method provided in Embodiment 2 may be implemented, and at this time, the electronic device may be a network device such as a base station.
  • FIG. 4 shows a schematic diagram of the hardware structure of this embodiment.
  • the electronic device 9 specifically includes:
  • At least one processor 91 at least one memory 92, and a bus 93 for connecting different system components, including the processor 91 and the memory 92, wherein:
  • the bus 93 includes a data bus, an address bus, and a control bus.
  • the memory 92 includes a volatile memory, such as a random access memory (RAM) 921 and/or a cache memory 922 , and may further include a read only memory (ROM) 923 .
  • RAM random access memory
  • ROM read only memory
  • Memory 92 also includes programs/utilities 925 having a set (at least one) of program modules 924 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, examples of which are Each or some combination of these may include implementations of network environments.
  • the processor 91 executes various functional applications and data processing by running the computer program stored in the memory 92, such as the method for determining the frequency domain position of the synchronization signal block provided in Embodiment 1 of the present invention, or realizing the method provided in Embodiment 2 cell broadcast method.
  • Electronic device 9 may further communicate with one or more external devices 94 (eg, keyboards, pointing devices, etc.). Such communication may occur through input/output (I/O) interface 95 .
  • the electronic device 9 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 96 .
  • Network adapter 96 communicates with other modules of electronic device 9 via bus 93 .
  • other hardware and/or software modules may be used in conjunction with electronic device 9, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (array of disks) systems, tape drives, and data backup storage systems.
  • the content in this embodiment is correspondingly the same as the method on the network side or the method on the terminal side, so the same parts will not be repeated here.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • This embodiment provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the method for determining the frequency domain position of a synchronization signal block provided in Embodiment 1 are implemented, or The steps of the cell broadcast method provided in Embodiment 2 are implemented.
  • the readable storage medium may more specifically include but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device or any of the above-mentioned the right combination.
  • the present invention can also be implemented in the form of a program product, which includes program code, and when the program product runs on a terminal device, the program code is used to make the terminal device execute The steps of the method for determining the frequency domain position of the synchronization signal block described in Embodiment 1, or the steps of implementing the cell broadcast method described in Embodiment 2.
  • the program code for executing the present invention can be written in any combination of one or more programming languages, and the program code can be completely executed on the user equipment, partially executed on the user equipment, or used as an independent
  • the package executes, partly on the user device and partly on the remote device, or entirely on the remote device.
  • the content in this embodiment is correspondingly the same as the method on the network side or the method on the terminal side, so the same parts will not be repeated here.
  • Embodiment 7 is a diagrammatic representation of Embodiment 7:
  • the terminal device When the terminal device is just turned on for cell search, it can only detect the SSB signal according to the frequency band supported by the operator and the terminal device, and perform downlink time-frequency synchronization. Due to the small granularity of the global frequency grid, the NR Absolute frequency point (NR Absolute Radio Frequency Channel Number, NR-ARFCN) (used to encode the frequency domain range of the reference frequency) has a large range of values. If blind detection is performed directly based on the global frequency grid, the synchronization delay will be relatively large. Therefore, in order to effectively reduce the synchronization delay in this process, the concept of synchronization grid is defined, and the search range is limited by the Global Synchronization Channel Number (GSCN).
  • GSCN Global Synchronization Channel Number
  • each synchronization grid corresponds to a GSCN, and the formula for calculating GSCN can be obtained through the third column in the table.
  • the granularity of synch raster in different frequency bands is different. Specifically, when the frequency range is between 0GHz-3GHz, the granularity of synch raster is 50kHz; when the frequency range is between 3GHz-24.25GHz, the granularity of synch raster is The granularity of synch raster is 1.44MHz; when the frequency range is between 24.25GHz-100GHz, the granularity of synch raster is 17.28MHz.
  • the distribution of the synchronous grid in some frequency bands is determined as shown in FIG. 5 .
  • the number range of the synchronization grid is 1828-1858, and there are 31 synchronization grids in total, and the number is GSCN.
  • the terminal device searches the SSB according to the position of the synchronization grid in a specific frequency band, so as to obtain the information of the main information block MIB and the system information block SIB1 from the SSB.
  • the above SIB1 can also be called Remaining Minimum System Information (RMSI).
  • RMSI Remaining Minimum System Information
  • the RMSI can be used to instruct the terminal device to perform cell access, so the terminal device must To enter a cell, it is necessary to obtain the RMSI in the SSB.
  • the subcarrier offset parameter K SSB indicates the RE-level (Resource Element-level, resource element level) between SSB and Control Resource Set #0 (CORESET#0, Control-Resource Set#0) offset (offset).
  • this type of SSB can be called a cell-defined CD-SSB. Terminal equipment can only access the cell when it scans the CD-SSB. If the SSB does not carry RMSI, this type of SSB can be called a CD-SSB.
  • NCD-SSB for non-cells, that is, SSB can be divided into CD-SSB and NCD-SSB, CD-SSB is mainly used for the initial access of the cell, including the RMSI information of the access cell, and NCD-SSB is mainly used for removing the cell Scenarios other than initial access, such as measurement, cannot support cell access for terminal equipment.
  • the subcarrier offset parameter K SSB includes 5 bits , can represent a value of 0-31, wherein, when the subcarrier offset parameter K SSB takes a value of 24-29, it indicates that the type of SSB is NCD-SSB, and cell access cannot be performed at this time, if the subcarrier offset parameter K When the value of SSB is 0-23, it means that the type of SSB is CD-SSB, and cell access can be performed.
  • the subcarrier offset parameter K SSB includes 4 bits, which can represent the value 0-15, wherein, the value of the subcarrier offset parameter K SSB is When the value is 12-13, it indicates that the type of SSB is NCD-SSB, and when the value of the subcarrier offset parameter K SSB is 0-11, it indicates that the type of SSB is CD-SSB.
  • the subcarrier offset parameter K SSB and the parameter pdcch-ConfigSIB1 in the MIB jointly indicate that the GSCN of the synchronization grid where the target CD-SSB is located is compared with the GSCN of the synchronization grid where the NCD-SSB is located
  • the frequency domain position offset of That is to say, if within the FR1 frequency range, the terminal device analyzes the subcarrier offset parameter K from the currently searched SSB when the value of SSB is 24 to 29, or within the FR2 frequency range, the terminal device analyzes the subcarrier offset parameter K When the value of the carrier offset parameter K SSB is 12 to 13, it is determined that the current SSB type is NCD-SSB.
  • the terminal device can determine CD-SSB and NCD according to the controlResourceSetZero and searchSpaceZero in the parameter pdcch-ConfigSIB1 in the MIB -
  • the offset of GSCN between SSBs that is, the frequency domain position offset
  • the terminal device obtains the corresponding
  • the frequency domain position offset in Figure 6 or Figure 7 can be used +
  • the GSCN of the current NCD-SSB can obtain the GSCN of the synchronization grid where the target CD-SSB is located, and then realize cell access.
  • the subcarrier spacing supported by the current system is 120kHz, 480kHz and 960kHz.
  • it can also support 480kHz, that is, SSB, type0-PDCCH, PDSCH carrying SIB1, other information (Other System Information, OSI) and msg.2/4 in the PRACH process can use 120kHz or 480kHz.
  • 52.6GHz-71GHz is a new frequency band, and it is only defined as one frequency band (band). Therefore, when the subcarrier spacing of SSB is 120kHz and 480kHz, the synchronization grid needs to be redesigned frequency domain location. In practical applications, in the 52.6GHz-71GHz frequency band, no matter how many subcarrier spacings are supported, the number of synchronization grids cannot exceed 665, that is, the number of synchronization grids above 52.6GHz may exceed 256.
  • an extended parameter A is added in this application, and the type of SSB is indicated by an indication parameter including the extended parameter A and the subcarrier offset parameter K SSB , thereby indicating a larger value range So that when the number of configurations of the synchronization grid increases, the configuration of the subcarrier offset parameter K SSB is not affected and exceeds the original range It can also be instructed so that the terminal device can find a suitable CD-SSB through the NCD-SSB, reducing the delay in accessing the cell.
  • the present application is also applicable when the configuration of the number of synchronous grids corresponding to FR1 or FR2 changes.
  • K SSB 12 corresponding to The value range of [1, 256]
  • the present application can be applied to overcome the disadvantages.
  • FIG. 5 is a flow chart of a cell access method provided in an embodiment of the present application. The method is applied to a terminal device, and the method includes the following steps:
  • Step S210 When the synchronization signal block SSB is searched in the frequency band, determine whether to try to initiate cell access according to the searched SSB.
  • the applicable frequency band may be, for example, a frequency band whose minimum frequency value is not less than 52.6 GHz, that is, the terminal device performs SSB search in a frequency band greater than or equal to 52.6 GHz, for example, performs SSB in the frequency band 52.6 GHz-71 GHz search.
  • the maximum number of synchronization grids can be up to 665. Without increasing the number of bits occupied by the subcarrier offset parameter K SSB , it may not be possible to indicate all synchronization grids.
  • the terminal device After the terminal device searches for the SSB, it can analyze the SSB.
  • the SSB includes an indication parameter used to indicate the type of the SSB.
  • the indication parameter indicates that the type of the SSB is NCD-SSB
  • the corresponding The value of falls into [1, 256 ⁇ M], where, Characterize the frequency domain position offset between the cell definition CD-SSB and the synchronization grid where the NCD-SSB is located, M is an integer not less than 2, and the value of the synchronization grid in the frequency band falls into (256 ⁇ M -1,256 ⁇ M.
  • the value range of is related to the number of synchronization grids. For example, for a certain frequency band, when the subcarrier offset parameter K SSB occupies 4 bits and the number of synchronization grids is 665, the value of K SSB falls between 0- When 11 indicates that the type of SSB searched is CD-SSB, the value of M is 3, and when the value of K SSB falls into 12-17, it indicates that the type of SSB searched is NCD-SSB, and can be selected Values range from -768 to 768 give instructions, The corresponding relationship between the range of values and the indicated parameters is shown in the table below:
  • the value of q can be configured according to the number of synchronous grids, so that the value of q can be flexibly adjusted according to requirements. to give instructions.
  • the base station When the base station broadcasts the SSB, it can carry the corresponding indication parameters in the SSB. Before the base station broadcasts the SSB, the base station can configure the indication parameters in the SSB, controlResourceSetZero and searchSpaceZero and the frequency domain position offset In this way, when the terminal device parses that the indication parameter indicates that the current SSB type is NCD-SSB, it can directly obtain the frequency domain position offset according to the corresponding relationship Therefore, based on the searched NCD-SSB and its corresponding frequency domain position offset Find the frequency domain position of the CD-SSB, and then realize cell access.
  • the frequency domain position of a larger value range is offset
  • an extended parameter A is added in this application, and the type of SSB is indicated by the indication parameter including the subcarrier offset parameter K SSB and the extended parameter A, so that the indication parameter has a larger value than the subcarrier offset parameter K SSB Value range, so that the indicator parameter can indicate the frequency domain position offset of a larger value range
  • the configuration of the subcarrier offset parameter K SSB is not affected and the frequency domain position offset exceeds the original range It can also be instructed, so that for the terminal equipment, it can find a suitable CD-SSB through the NCD-SSB, and shorten the delay in accessing the cell.
  • the number of bits occupied by the indication parameter can be customized according to the actual application, wherein the number of bits occupied by the subcarrier offset parameter K SSB is corresponding to the subcarrier spacing corresponding to SSB and CORESET#0
  • the subcarrier spacing of is determined, and the number of bits occupied by the extended parameter A can be determined according to the configuration of the number of synchronization grids.
  • the number of bits occupied by the subcarrier offset parameter K SSB is 4 bits, and the number of bits occupied by the extended parameter A may be greater than or equal to 1 bit.
  • the indication parameter can be obtained by concatenating the subcarrier offset parameter K SSB and the extended parameter A. If the number of bits of the subcarrier offset parameter K SSB is 4 bits and the number of bits of the extended parameter A is 1 bit, it can be The indicating parameter is represented by splicing two parameters, and the splicing method may be that the extended parameter A occupies the highest bit, and the subcarrier offset parameter K SSB occupies the lower 4 bits.
  • the value of the extended parameter A is 0, and the value of the subcarrier offset parameter K SSB is 1100, then the value of the indication parameter after splicing is 01100, that is, the value of the indication parameter represented by the splicing of the two parameters at this time is 12 .
  • the extension parameter A occupies the lowest bit
  • the subcarrier offset parameter K SSB occupies the upper 4 bits.
  • the subcarrier offset parameter K SSB occupies 4 bits, the range of the frequency domain position offset indicated by it is small, which may not be enough to indicate all synchronization grids in the frequency band, so it is indicated by adding the extended parameter A Frequency Domain Position Offset for Large Range of Values And avoid changing the subcarrier offset parameter K SSB , if the indication parameter is 5 bits, it can indicate a range of 0-31, so as to indicate a frequency domain position offset with a larger value range.
  • the type of SSB is determined to be CD-SSB, and then the CD-SSB can be demodulated to attempt to initiate cell access, wherein the value of the indication parameter represents the subcarrier offset of the SSB , that is, the subcarrier offset is jointly represented by the original subcarrier offset parameter K SSB and the extended parameter.
  • the target CD-SSB is determined according to the NCD-SSB, and the target CD-SSB is demodulated to attempt to initiate cell access.
  • the terminal device when the terminal device resolves that the value of the indicated parameter falls within the first range (for example, the first range is 0-11), it indicates the type of SSB If it is CD-SSB, it can directly demodulate CD-SSB to try cell access.
  • the terminal device resolves that the value of the indicated parameter falls within the second range (for example, the second range is 12-17), it indicates that the type of SSB is NCD-SSB, and at this time, it is necessary to find an NCD-SSB Target CD-SSB for cell access through the target CD-SSB.
  • the specific value range of the first range can be determined according to the subcarrier spacing corresponding to the SSB and CORESET#0 in actual situations.
  • the frequency domain position of the synchronization grid where the NCD-SSB is located the GSCN NCD-SSB and Determine the frequency domain position GSCN CD-SSB of the target CD-SSB.
  • the value of the indication parameter and the frequency domain position offset are pre-configured The corresponding relationship between, so that the frequency domain position offset can be obtained according to the indication parameter. For example, referring to the above table, if the value of the indicated parameter is 12 and the value of 16*controlResourceSetZero+searchSpaceZero (that is, pdcch-configSIB1) is 0, then the terminal device obtains the frequency domain position offset The value of is 1.
  • the value of the indication parameter falls into [256 ⁇ i+1, 256 ⁇ (i+1)], wherein, p 1 is the minimum value of the indication parameter when the type of the SSB is NCD-SSB, i is an integer, And, 0 ⁇ i ⁇ M-1; when the value of the indication parameter is p 1 +i+M, the corresponding The value of falls into [-256 ⁇ (i+1), -256 ⁇ i+1.
  • M is an integer not less than 2
  • p 1 is the minimum value of the indication parameter when the type of SSB is NCD-SSB.
  • M is equal to 3
  • p 1 is equal to 12.
  • i is equal to 0
  • the value of the indicator parameter is 15 and corresponds to The range of values is [-256, -1]
  • the value of the indicated parameter is 13 and corresponds to The value range of is [257, 512]
  • the indicator parameter value is 16 and corresponds to The range of values is [-512, -257]
  • when i is equal to 2 there is an indication that the value of the parameter is 14 and corresponds to The range of values is [513, 768], and the value of the indicator parameter is 17 and corresponds to The value range of is [-768, -513].
  • the value range of is incremented by 256 as the indication parameter increases, because
  • the indicator parameter is obtained by concatenating K SSB and extended parameter A, so that the value range of the indicator parameter can be limited by extending the parameter A and the subcarrier offset parameter K SSB , and then indicates a frequency domain with a larger value range position offset So that when the number of synchronization grids increases, the configuration of the subcarrier offset parameter K SSB is not affected and the frequency domain position offset beyond the original range It can also be instructed, so that the terminal device can find a suitable CD-SSB from the NCD-SSB, so as to realize fast access to the cell.
  • the indication parameter is obtained through a combination of the subcarrier offset parameter K SSB and the extended parameter A.
  • the value of the subcarrier offset parameter K SSB is the subcarrier offset representing the SSB.
  • the terminal device When the terminal device tries to access a cell, it analyzes the subcarrier offset parameter K SSB and the extended parameter A in the SSB. When the value of the extended parameter A is empty or falls into the third range, and the subcarrier offset parameter K SSB When the value or the concatenated value of the subcarrier offset parameter K SSB and the extended parameter A falls into the fourth range, the type of the SSB is determined to be CD-SSB, and the CD-SSB is demodulated to attempt to initiate cell access.
  • the value of the extended parameter A falls into the fifth range
  • the value of the subcarrier offset parameter K SSB or the value of the concatenated subcarrier offset parameter K SSB and the extended parameter A falls into the sixth range
  • determine The type of SSB is NCD-SSB
  • the target CD-SSB is determined according to the NCD-SSB
  • the target CD-SSB is demodulated to attempt to initiate cell access.
  • the splicing method of the subcarrier offset parameter K SSB and the extended parameter A is still that the extended parameter A occupies high-order bits, while the subcarrier offset parameter K SSB occupies low-order bits, and the extended parameter A occupies 1 bit, The subcarrier offset parameter K SSB occupies 4 bits.
  • the value of the extended parameter A is empty or falls in the third range (for example, the third range is 0)
  • the value of the subcarrier offset parameter K SSB falls in the fourth range (for example, the fourth range is 0-11) or the subcarrier offset parameter K SSB and the extended parameter A concatenated value fall into the fourth range (for example, the fourth range is 0-11)
  • the type of SSB is CD- SSB
  • cell access can be performed directly according to CD-SSB.
  • the value of the extended parameter A falls into the fifth range (for example, the fifth range is 1)
  • the value of the subcarrier offset parameter K SSB falls in the sixth range (for example, the sixth range is 12-13), or
  • the subcarrier offset parameter K SSB and the extended parameter A spliced value fall into the sixth range (the sixth range is 28-29)
  • the type of SSB is determined to be NCD-SSB, and the target can be obtained according to NCD-SSB CD-SSB, and then perform cell access according to the target CD-SSB.
  • the specific value range of the fourth range can be determined according to the subcarrier spacing corresponding to the SSB and CORESET#0 in actual situations.
  • the indication parameter is obtained by combining the subcarrier offset parameter K SSB and the extended parameter A, so that the SSB type can be preliminarily judged directly according to the value range of the extended parameter A.
  • the frequency domain position of the synchronization grid where the NCD-SSB is located the GSCN NCD-SSB and Determine the frequency domain position GSCN CD-SSB of the target CD-SSB.
  • the value of the subcarrier offset parameter K SSB and the frequency domain position offset are preconfigured In this way, the frequency domain position offset can be obtained according to the indicated parameter and the value of the corresponding pdcch-ConfigSIB 1.
  • the value of the indication parameter falls into [256 ⁇ i+1, 256 ⁇ (i+1)], wherein, p 2 is the minimum value of the subcarrier offset parameter K SSB when the type of the SSB is NCD-SSB Or the minimum value of the concatenated subcarrier offset parameter K SSB and the extended parameter A, i is an integer, and 0 ⁇ i ⁇ M-1.
  • the value of the indication parameter is p 2 +i+M
  • the corresponding The value of falls into [-256 ⁇ (i+1), -(256 ⁇ i+ 1)].
  • M is an integer not less than 2
  • p 2 is the minimum value of the indication parameter when the type of SSB is NCD-SSB.
  • M is equal to 3
  • p 2 is equal to 12.
  • i is equal to 0
  • i is equal to 1
  • i is equal to 2
  • there is an indication that the value of the parameter is 14 and corresponds to The range of values is [513, 768], and the value of the indicator parameter is 17 and corresponds to The value range of is [-768, -513].
  • the value range of is incremented by 256 as the indication parameter increases, because
  • the type of SSB is indicated by indicating the value of the parameter. Since the indicating parameter has a larger value range than the subcarrier offset parameter K SSB , the indicating parameter can be used for the frequency domain position of a larger value range offset To indicate, so when the type of SSB is NCD-SSB, the terminal device can pass the corresponding NCD-SSB Find a suitable CD-SSB.
  • the extended parameter parameter A may be represented by at least one of the parameters subCarrierSpacingCommon, dmrs-TypeA-Position, cellBarred, intraFreqReselection, and Spare in the main information block MIB.
  • the extended parameter A when the extended parameter A occupies 1 bit, it can be expressed by using one of the above-mentioned parameters, and when the extended parameter A occupies 2 bits, it can be expressed by combining any two of the above-mentioned parameters.
  • the extended parameter A is represented by related parameters in the MIB, which can be represented without additional extended parameters, which is simpler.
  • the parameter subCarrierSpacingCommon in the MIB is used to indicate the subcarrier spacing of the initial access, occupying 1 bit. If the parameter subCarrierSpacingCommon is used to represent the extended parameter A, the terminal device can determine the value of the extended parameter A after parsing the value of this parameter, and then combine the value of the subcarrier offset parameter K SSB to jointly determine the value of the indication parameter value.
  • the default subcarrier spacing of the system information block SIB1, other system information OSI, and messages msg2 and msg4 is the same as the SSB, so that the terminal equipment can obtain the subcarrier spacing from other information, and after parsing to the After the parameter, the value of the extended parameter A can be obtained.
  • the parameter dmrs-TypeA-Position in the MIB is used to indicate the symbol position of the first PDSCH DMRS in the time slot, occupying 1 bit. If the parameter dmrs-TypeA-Position is used to represent the extended parameter A, the terminal device can determine the value of the extended parameter A after parsing the value of this parameter, and then combine the value of the subcarrier offset parameter K SSB to jointly determine the indication The value of the parameter.
  • the base station can fix the DMRS in the PBCH channel in the SSB, that is, fix it at the second symbol position pos2 or the third symbol position pos3, that is, the terminal device defaults the position of the DMRS of the PBCH to the second The symbolic position pos2 or the third symbolic position pos3.
  • the parameter cellBarred in the MIB is used to indicate whether the current terminal equipment is allowed to camp in the cell, occupying 1 bit. If the parameter cellBarred is used to represent the extended parameter A, the terminal device can determine the value of the extended parameter A after parsing the value of this parameter, and then combine the value of the subcarrier offset parameter K SSB to jointly determine the value of the indication parameter value.
  • the terminal device determines that the type of SSB is NCD-SSB, access to the cell is prohibited by default, and when the type of SSB is determined to be CD-SSB, access to the cell is allowed by default.
  • the parameter intraFreqReselection in the MIB is used to control the cell reselection of the same-frequency cell and occupies 1 bit. If the parameter intraFreqReselection is used to represent the extended parameter A, the terminal device can determine the value of the extended parameter A after parsing the value of this parameter, and then combine the value of the subcarrier offset parameter K SSB to jointly determine the value of the indication parameter value. When the terminal device determines that the SSB type is NCD-SSB, the same-frequency reselection is prohibited by default, and when the SSB type is determined to be CD-SSB, the same-frequency reselection is allowed by default.
  • the parameter Spare in the MIB is a spare parameter and occupies 1 bit. If the parameter Spare is used to represent the extended parameter A, the terminal device can determine the value of the extended parameter A after parsing the value of this parameter, and then combine the value of the subcarrier offset parameter K SSB to jointly determine the value of the indication parameter value.
  • the content in this embodiment is the same as the method on the network side, so the same parts will not be repeated here.
  • Embodiment 8 is a diagrammatic representation of Embodiment 8
  • Each Global Synchronization Channel Number corresponds to a frequency domain position in the Synch raster. Please refer to Table 9, which shows the correspondence between each GSCN and frequency domain position. It can be seen that according to the third column in Table 9, the GSCN corresponding to different frequency domain positions can be calculated.
  • SSB can be divided into CD-SSB and NCD-SSB.
  • CD-SSB is mainly used for the initial access of the cell, which contains the system information block 1 (System Information Block 1, SIB1) information of the access cell; and NCD-SSB SSB is mainly used in other situations except the initial access of the cell, for example: measurement and so on.
  • SIB1 System Information Block 1
  • NCD-SSB SSB is mainly used in other situations except the initial access of the cell, for example: measurement and so on.
  • When operators deploy SSB they generally deploy NCD-SSB and CD-SSB together on the Synch raster. Therefore, when a terminal device searches for an SSB on the Synch raster, there is a certain probability that the SSB found is NCD-SSB. Since the NCD-SSB does not contain the SIB1 information of the target cell, the terminal device needs to find the SSB through the NCD-SSB.
  • Target CD-SSB is mainly used for the initial access
  • SSB includes Master Information Block (Master Information Block, MIB) and Physical Broadcast Channel (Physical Broadcast Channel, PBCH) load (payload).
  • MIB Master Information Block
  • PBCH Physical Broadcast Channel
  • MIB is transmitted through PBCH, including system frame number (system Frame Number), subcarrier common interval (sub Carrier Spacing Commo), subcarrier offset parameter (ssb-Subcarrier Offset), dmrs-TypeA position (dmrs-TypeA-Position), Physical downlink control channel (Physical Downlink Control Channel, PDCCH) system information block 1 configuration parameters (pdcch-Config SIB1) and other parameters.
  • system frame number system Frame Number
  • subcarrier common interval sub Carrier Spacing Commo
  • subcarrier offset parameter ssb-Subcarrier Offset
  • dmrs-TypeA position dmrs-TypeA-Position
  • Physical downlink control channel Physical Downlink Control Channel
  • PDCCH Physical Downlink Control Channel
  • ssb-Subcarrier Offset represents the offset (offset) of resource element level (Resource Element-level, RE-level) between SSB and CORESET#0, which can be expressed by parameter K SSB .
  • the terminal device can determine the SSB (NCD-SSB) and the target SSB (CD -SSB) the offset of the GSCN between the SSB and the target SSB (CD -SSB) the offset of the GSCN between
  • Table 6 shows a GSCN offset relationship.
  • the parameter K SSB demodulated by the terminal device is a number greater than or equal to 12 and less than 14, it can indicate that the SSB is NCD-SSB.
  • control Resource Set Zero is configured as 0000
  • search Space Zero is configured as 0001 (at this time, 16 ⁇ controlResourceSetZero+searchSpaceZero is configured as 1)
  • the target SSB CD-SSB
  • NCD-SSB the offset of the GSCN between the SSB
  • the PBCH payload is mainly formed at the physical layer, occupying 8 bits, which are used to indicate the system frame number, half-frame indication, candidate SSB index, etc.
  • a cell generally refers to the area covered by a signal of a network device.
  • the technical scheme of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access ( Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.
  • GSM Global System of Mobile communication
  • CDMA code division multiple access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE Frequency Division Duplex Frequency Division Duplex
  • TDD Time Division Duplex Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Inter
  • FIG. 8 is a structural block diagram of a communication system provided by an embodiment of the present application.
  • the communication system 100 may include a network device 101 and a terminal device 102 , wherein the network device 101 and the terminal device 102 are communicatively connected.
  • the network device 101 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area. It can be understood that, in different communication systems, the network device 101 provided in the embodiment of the present application may have different forms.
  • the network device 101 can be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolution in an LTE system.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • a type base station (Evolutional Node B, eNB or eNodeB), or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN);
  • the network device 101 can be a mobile switching center, Network-side devices in relay stations, access points, in-vehicle devices, wearable devices, hubs, switches, bridges, routers, 5G networks, etc.
  • the terminal device 102 may be a device located within the coverage of the network device 101 . Similar to the network device 101, it can be understood that in different usage scenarios, the terminal device 102 provided in the embodiment of the present application may also have different forms.
  • the terminal device 102 may be a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, and the like.
  • wired communication can be used between the network device 101 and the terminal device 102, for example: between the network device 101 and the terminal device 102, digital subscriber line (Digital Subscriber Line, DSL), digital cable, road connection Connections such as cables; as another implementation, wireless communication can be used between the network device 101 and the terminal device 102, for example: through a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), the Internet of Things (Internet of Things , IoT) and other connections.
  • WLAN wireless Local Area Network
  • IoT Internet of Things
  • the embodiment of the present application does not specifically limit the number of network devices 101 and the number of terminal devices 102 in the communication system 100 .
  • the number of network devices 101 may be one or more; as another implementation manner, the number of terminal devices 102 may also be one or more.
  • the communication system 100 may include one or more terminal devices 102 within the coverage of the network device 102; There may also be one or more terminal devices 102 within the coverage of the device 101, and the terminal devices 102 within the coverage of multiple network devices 101 may overlap, that is, a certain terminal device 102 may be located in the coverage of multiple network devices 102 at the same time within range.
  • the communication system 100 provided in the embodiment of the present application may also include other network entities such as a network controller and a mobility management entity, which are not specifically introduced in the embodiment of the present application.
  • the embodiment of the present application provides a cell access method applied to the terminal device 102 and a cell broadcast method applied to the network device 101 .
  • the above two methods will be described in detail below in turn.
  • FIG. 9 is a flow chart of a cell access method provided in the embodiment of the present application.
  • the cell access method can Including the following:
  • Step S201 When an SSB is found in the frequency band, determine whether to attempt to initiate cell access according to the searched SSB.
  • the terminal device can sequentially search for each frequency domain position in the frequency band according to a certain order, so as to receive the SSB corresponding to the frequency domain position.
  • the terminal device searches for the SSB in the frequency band, it can determine whether to try to access the cell according to the above SSB.
  • the terminal device may analyze the SSB.
  • attention can be paid to the parameter K SSB , through which it can be judged whether the SSB is CD-SSB or NCD-SSB.
  • the terminal device can directly try to access the cell; and when the SSB is judged to be CD-SSB, the terminal device can find a suitable CD-SSB based on NCD-SSB and parameter K SSB And try to access the cell.
  • the minimum frequency value of the frequency band is not less than 52.6 GHz, and the SSB is different from the subcarrier interval of the corresponding type0-PDCCH.
  • the value of the parameter K SSB can be configured according to the difference between the subcarrier spacing of SSB and the corresponding subcarrier spacing of type0-PDCCH. In other words, the difference between the subcarrier spacing of SSB and the subcarrier spacing of type0-PDCCH will lead to the difference of parameter K SSB .
  • the parameter K SSB can be configured as follows: when the value of K SSB is [0, 2], SSB is CD- SSB; when the value of K SSB is [3, 8], the SSB is NCD-SSB.
  • the subcarrier spacing of SSB is equal to the subcarrier spacing of type0-PDCCH, but in the embodiment of this application, the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET#0 is located are different. equal.
  • the terminal device can find a suitable CD-SSB, thereby reducing the delay of accessing the cell.
  • the above-mentioned step of determining whether to attempt to initiate cell access according to the searched SSB may specifically include the following content:
  • the SSB is determined to be CD-SSB, and the CD-SSB is demodulated to attempt to initiate cell access.
  • the value of the parameter K SSB can be configured according to the difference between the subcarrier spacing of the SSB and the corresponding subcarrier spacing of the type0-PDCCH.
  • the parameter K SSB can be configured as follows: when the value of K SSB is [0, p 0 ], the SSB is CD-SSB, and the terminal device can directly try to access the cell; when the value of K SSB is [p 0 +1, p 0 + 2M], the SSB is NCD-SSB, and the terminal device can find a suitable CD-SSB based on the NCD-SSB and parameter K SSB and try to access the cell.
  • both p 0 and M are positive integers, and the value of p 0 can also be determined according to the difference between the subcarrier spacing of the SSB and the subcarrier spacing of the corresponding type0-PDCCH; at the same time, the number of synchronization grids in the frequency band The value falls into (256 ⁇ M-1, 256 ⁇ M.
  • the above-mentioned step of determining the target CD-SSB according to the NCD-SSB may specifically include the following content:
  • the frequency domain position GSCN NCD-SSB of the synchronization grid where the NCD-SSB is located and the frequency domain position offset of the synchronization grid where the target CD-SSB and NCD-SSB are located Determine the frequency domain position GSCN CD-SSB of the target CD-SSB.
  • the terminal device can find the frequency domain position GSCN NCD- SSB of the synchronization grid where the NCD-SSB is located according to the two parameters of the searched NCD-SSB parameter K SSB and the parameter PDCCH-configSIB1 of the configuration system information block 1, and then According to the frequency domain position offset of the above GSCN NCD-SSB and the synchronization grid where the target CD-SSB and NCD-SSB are located Determine the frequency domain position GSCN CD-SSB of the target CD-SSB.
  • the frequency domain position GSCN NCD-SSB of the synchronization grid where the NCD- SSB is located can be offset from the frequency domain position of the synchronization grid where the target CD-SSB and NCD-SSB are located
  • the frequency domain position GSCN CD-SSB of the target CD-SSB is obtained by adding them.
  • the terminal device when the value of the parameter K SSB falls into [p 0 +1, p 0 +2M], it can be based on the frequency domain position of NCD-SSB GSCN NCD-SSB and the corresponding frequency domain position offset Find the frequency domain location GSCN CD-SSB corresponding to the appropriate CD -SSB and try to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from that of the PDCCH where CORESET#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of accessing the cell.
  • the terminal device may not necessarily be able to access the CD-SSB based on the above CD-SSB the corresponding district. That is to say, the terminal device may first try to access the cell, and if the access fails, continue to search for other frequency domain locations.
  • the value of p may be the largest integer value less than 12/j, where j represents the ratio of the SSB to the subcarrier spacing of the corresponding type0-PDCCH.
  • the subcarrier spacing of the searched SSB is 480kHz and the corresponding subcarrier spacing of type0-PDCCH is 120kHz
  • Figure 10 is the RE level offset of SSB and type0-PDCCH provided by the embodiment of this application schematic diagram.
  • the subcarrier spacing of SSB is 4 times the subcarrier spacing of type0-PDCCH, since the RE level offset here moves in units of subcarrier spacing of SSB, therefore, in this case,
  • the value of the parameter K SSB can be flexibly determined according to the combination of the subcarrier spacing corresponding to the SSB and type0-PDCCH and the number of synchronization grids configuration to the type of SSB as well as NCD-SSB with Indicate the corresponding relationship between them.
  • the number of Synch rasters in this frequency band will be greater than 256.
  • M the value range of the GSCN offset can be increased to -768 to 768 on the basis of the foregoing embodiment.
  • Example 2 the subcarrier spacing of the searched SSB is 960kHz and the corresponding subcarrier spacing of type0-PDCCH is 120kHz, please refer to Figure 11, Figure 11 is the RE level offset of SSB and type0-PDCCH provided by the embodiment of this application schematic diagram.
  • the subcarrier spacing of SSB is 8 times the subcarrier spacing of type0-PDCCH.
  • the value of the parameter K SSB can be flexibly determined according to the combination of the subcarrier spacing corresponding to the SSB and type0-PDCCH and the number of synchronization grids configuration to the type of SSB as well as NCD-SSB with Indicate the corresponding relationship between them.
  • the number of Synch rasters in this frequency band will be greater than 256.
  • M the value range of the GSCN offset can be increased to -768 to 768 on the basis of the above embodiment.
  • Example 3 the subcarrier spacing of the searched SSB is 960kHz and the corresponding subcarrier spacing of type0-PDCCH is 480kHz, please refer to Figure 12, Figure 12 is the RE level offset of SSB and type0-PDCCH provided by the embodiment of this application schematic diagram.
  • the subcarrier spacing of SSB is twice the subcarrier spacing of type0-PDCCH.
  • the value of the parameter K SSB can be flexibly determined according to the combination of the subcarrier spacing corresponding to the SSB and type0-PDCCH and the number of synchronization grids configuration to the type of SSB as well as NCD-SSB with Indicate the corresponding relationship between them.
  • the number of Synch rasters in this frequency band will be greater than 256.
  • the value range of the GSCN offset can be increased to -768 to 768 on the basis of the above embodiment.
  • the specific values of the subcarrier spacing of the SSB and the subcarrier spacing of the type0-PDCCH may be other values except 120 kHz, 480 kHz, and 960 kHz, which are not specifically limited in this embodiment of the present application.
  • the content in this embodiment is the same as the method on the network side, so the same parts will not be repeated here.
  • Embodiment 9 is a diagrammatic representation of Embodiment 9:
  • the extended parameter A is represented by at least one of the parameters subCarrierSpacingCommon, dmrs-TypeA-Position, cellBarred, intraFreqReselection, and Spare in the main information block MIB;
  • the extended parameter A When the extended parameter A is represented by the parameter subCarrierSpacingCommon, configure the subcarrier spacing of the system information block SIB1, other system information OSI, and messages msg2 and msg4 to be the same as the SSB;
  • the extended parameter A When the extended parameter A is represented by the parameter dmrs-TypeA-Position, configure the position of the demodulation reference signal DMRS in the PBCH channel as pos2 or pos3;
  • the extended parameter A is represented by the parameter cellBarred, it is configured to allow access to the cell when the type of the SSB is CD-SSB, and to prohibit access to the cell when the type of the SSB is NCD-SSB;
  • the configuration allows intra-frequency reselection when the type of the SSB is CD-SSB, and prohibits intra-frequency reselection when the type of the SSB is NCD-SSB ;
  • the number of bits occupied by the subcarrier offset parameter K SSB is 4 bits, and the number of bits occupied by the extended parameter A is not less than 1 bit;
  • the minimum frequency value of the frequency band is not less than 52.6GHz.
  • the indication parameter including the subcarrier offset parameter K SSB and the extended parameter A is used to indicate the type of SSB. Due to the addition of the extended parameter A, the indication parameter has a larger indication than the subcarrier offset parameter K SSB.
  • the value range of the parameter so that the frequency domain position offset corresponding to the indicated parameter
  • the value range of can also be increased, so that when the number of synchronization grid configurations increases, the configuration of the subcarrier offset parameter K SSB is not affected and the frequency domain position offset It can also be instructed, so that for the terminal equipment, it can find a suitable CD-SSB through the NCD-SSB, and shorten the delay in accessing the cell.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供一种同步信号块的频域位置确定方法及系统。本发明实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对式（I）取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移式（I）的指示，从而能够基于搜索到的NCD-SSB来确定对应CD-SSB的频域位置，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。

Description

同步信号块的频域位置确定方法及系统 技术领域
本发明涉及一种同步信号块的频域位置确定方法及系统，属于通信技术领域。
背景技术
在第五代移动通信系统的初始接入过程中，每个频段(band)内，终端设备在预定义的同步栅格(synch raster，synchronization raster)上搜索扫描同步信号块(SSB，Synchronization Signal and PBCH block)以接入小区，并获取目标小区的小区信息。其中，同步栅格可以用于指示频域位置，并且有，SSB的频域位置与GSCN(Global Synchronization Channel Number，全球同步信道编号)相关联，3GPP TS 38.104(V17.3.0)中表5.4.3.1-1则示出了这种关联，具体如表1所示：
表1：全球频率栅格的GSCN参数
Figure PCTCN2022130984-appb-000001
如表1所示，每个同步格栅对应一个全球同步信道编号，具体对应关系由表1第二列和第三列示出，其中，不同频率范围内的全球同步信道编号粒度不同。
对于同步信号块，其可分成两类，即小区定义-同步信号块(CD-SSB，Cell Define SSB)和非小区定义-同步信号块(NCD-SSB，None Cell Define SSB)，小区定义-同步信号块块主要用于小区的初始接入，其包含了接入小区的系统信息块1(SIB1，SystemInformationBlock 1)信息，而非小区定义-同步信号块主要用于非小区的初始接入，比如测量。运营商在部署同步信号块的时候，一般会将非小区定义-同步信号块和小区定义-同步信号块一同部署在同步格栅上。因此，终端在同步格栅上搜索小区定义-同步信号块的时候，存在一定概率搜索到的同步信号块为非小区定义-同步信号块。但因为非小区定义-同步信号块内不包含接入目标小区的系统信息块1信息，终端需要通过非小区定义-同步信号块找到目标小区定义-同步信号块。
同步信号块包括主信息块(MIB，Master Information Block)和PBCH payload物理广播信道载荷，主信息块通过物理广播信道传输。物理广播信道载荷在物理层形成，占用8个比特，用于表示系统帧号、半帧指示、候选同步信号块索引等信息。主信息块的参数“ssb-Subcarrieroffset”表示同步信号块与控制资源集#0(CORESET#0，Control-Resource Set#0)之间资源单元级别(RE-level，Resource Element)的偏移，在NR(New Radio，新空口)频率范围2(FR2，Frequency Range 2)内，当终端设备解调出该值为12或13时，其表示该同步信号块为非小区定义-同步信号块，即不能用于小区的初始接入。此时，终端需要根据主信息块中参数“pdcch-configSIB1”中的controlResourceSetZero和searchSpaceZero确定小区定义-同步信号块与非小区定义-同步信号块之间全球同步信道编号的偏移
Figure PCTCN2022130984-appb-000002
从而通过非 小区定义-同步信号块找到目标小区定义-同步信号块，其中具体映射关系如表2所示：
表2：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000003
之间的关系(FR2)
Figure PCTCN2022130984-appb-000004
Figure PCTCN2022130984-appb-000005
的取值介于-256与256之间，这是因为目前第五代移动通信系统的频段处于频率范围2(FR2，Frequency Range 2)——24.25GHz～52.6GHz内，在该频率范围中，所有频段内的同步格栅数量都未超过256。
然而，在最低频率大于52.6GHz的频段内，现有技术，绝对值高于256的
Figure PCTCN2022130984-appb-000006
无法被指示。这会使得终端设备在搜索到非小区定义-同步信号块的情况下，因无法找到合适的小区定义-同步信号块，而增加其接入小区的延迟。
发明内容
本发明的目的在于克服现有技术中的不足，提供一种同步信号块的频域位置确定方法及系统，旨在能够缩短终端设备基于搜索到的NCD-SSB获取对应CD-SSB的时间，并缩短终端设备接入小区的时延。为达到上述目的，本发明是采用下述技术方案实现的：
一种同步信号块的频域位置确定方法，包括：
在频段内搜索到非小区定义同步信号块NCD-SSB时，确定所对应的频域位置偏移
Figure PCTCN2022130984-appb-000007
其中，所述
Figure PCTCN2022130984-appb-000008
表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，
Figure PCTCN2022130984-appb-000009
的取值落入[1，256×M]，M为不小于2的整数，并且，所述频段内同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段的最小频率值不小于52.6GHz；
根据所述NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB和所述
Figure PCTCN2022130984-appb-000010
确定所述CD-SSB所在同步栅格的频域位置GSCN CD-SSB。
一种小区广播方法，包括：
在频段内广播同步信号块SSB；
当所述SSB为非小区定义NCD-SSB时，所对应的频域位置偏移
Figure PCTCN2022130984-appb-000011
的取值落入[1，256×M]，其中，所述
Figure PCTCN2022130984-appb-000012
表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，M为不小于2的整数，并且，所述频段内同步栅格的数量取值落入(256×(M-1)，256×M]。
一种同步信号块的频域位置确定系统，包括：
第一确定模块，用于在频段内搜索到非小区定义同步信号块NCD-SSB时，确定所对应 的频域位置偏移
Figure PCTCN2022130984-appb-000013
其中，所述
Figure PCTCN2022130984-appb-000014
表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，
Figure PCTCN2022130984-appb-000015
的取值落入[1，256×M]，M为不小于2的整数，并且，所述频段内同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段的最小频率值不小于52.6GHz；
第二确定模块，用于根据所述NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB和所述
Figure PCTCN2022130984-appb-000016
确定所述CD-SSB所在同步栅格的频域位置GSCN CD-SSB。
一种小区广播系统，包括：
广播模块，用于在频段内广播同步信号块SSB；
当所述SSB为非小区定义NCD-SSB时，所对应的频域位置偏移
Figure PCTCN2022130984-appb-000017
的取值落入[1，256×M]，其中，所述
Figure PCTCN2022130984-appb-000018
表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，M为不小于2的整数，并且，所述频段内同步栅格的数量取值落入(256×(M-1)，256×M]。
一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述任一种同步信号块的频域位置确定方法，或者上述任一种小区广播方法。
一种非暂态计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述任一种同步信号块的频域位置确定方法，或者上述任一种小区广播方法。
与现有技术相比，本发明实施例所提供的同步信号块的频域位置的确定方法及系统所达到的有益效果包括：本发明实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000019
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000020
的指示，从而能够基于搜索到的NCD-SSB来确定对应CD-SSB的频域位置，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
附图说明
图1为根据本发明实施例的一种通信系统的结构示意图。
图2为根据本发明实施例1的同步信号块的频域位置确定方法的流程图。
图3为根据本发明实施例3的同步信号块的频域位置确定系统的模块示意图。
图4为根据本发明实施例5的电子设备的结构示意图。
图5为根据本发明实施例8的SSB与type0-PDCCH的RE level offset示意图。
图6为现有技术中一种在FRi频率范围内，子载波偏移参数与频域位置偏移的对应关系的示意图。
图7为现有技术中一种在FR2频率范围内，子载波偏移参数与频域位置偏移的对应关系的示意图。
图8为本申请实施例提供的一种通信系统的结构框图。
图9为本申请实施例提供的一种小区接入方法的流程图。
图10为本申请实施例提供的SSB与type0-PDCCH的RE level offset示意图。
图11为本申请实施例提供的SSB与type0-PDCCH的RE level offset示意图。
图12为本申请实施例提供的SSB与type0-PDCCH的RE level offset示意图。
具体实施方式
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
本申请实施例中的信息广播方法以及小区接入方法可以应用于各种通信系统，例如，全球移动通讯(Global System ofMobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)或5G系统等。
如图1所示，本申请中的信息广播方法或小区接入方法可应用于图1所示的通信系统100。该通信系统100包括基站10和终端设备20，基站10可以为区域提供通信覆盖，可以与位于该区域内的终端设备20进行通信。在一些实施方式中，基站10可以是GSM系统或CDMA系统中的基站，也可以是WCDMA系统在的基站，也可以是LTE系统中的演进型基站，也可以是5G系统的基站。
终端设备20可以指接入终端、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。接入终端可以是蜂窝电话、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、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
为了便于对本申请方案的理解，下面先针对本申请中涉及到的一些概念进行简单介绍。
同步信号块(SSB)：在NR系统中的公共信道和信号，如同步信号(synchronization signal，SS)和物理广播信道(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接收。同步信号的多波束发送是通过定义SS/PBCH突发集合(burst set)实现的，一个SS burst set包含一个或多个SS/PBCH block(简称同步信号块SSB)，一个SSB用于承载一个波束的同步信号和物理广播信道。
同步栅格(Synchronization Raster，synch raster)：同步栅格是用于配置SSB的基本频域位置，同步栅格的步长和密度决定了终端设备进行小区初始搜索的时间。
在终端设备刚开机进行小区搜索时，其只能根据运营商以及终端设备支持的频段来检测SSB信号，进行下行时频同步，由于全局频率栅格的粒度较小导致NR绝对频点(NRAbsolute Radio Frequency Channel Number，NR-ARFCN)(用于对参考频率的频域范围进行编码)的取值范围较大，如果直接根据全局频率栅格进行盲检，则同步时延会比较大。所以，为了有效的降低此过程的同步时延，定义了同步栅格的概念，并通过全局同步信道号(Global Synchronization Channel Number，GSCN)来限定搜索范围。
实施例1：
本实施例提供一种同步信号块的频域位置确定方法，并且，本实施例的频域位置确定方法可以应用于手机、平板电脑、可穿戴设备等终端设备，图2示出了本实施例的频域位置确定方法的流程图。参照图2，本实施例的频域位置确定方法包括：
S101、在频段内搜索到非小区定义同步信号块NCD-SSB时，确定所对应的频域位置偏移
Figure PCTCN2022130984-appb-000021
S102、根据NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB和
Figure PCTCN2022130984-appb-000022
确定CD-SSB所在同步栅格的频域位置GSCN CD-SSB。
在本实施例中，
Figure PCTCN2022130984-appb-000023
表征小区定义同步信号块CD-SSB与非小区定义同步信号块NCD-SSB所在同步栅格的频域位置偏移，
Figure PCTCN2022130984-appb-000024
的取值落入[1，256×M]，M为不小于2的整数，并且，频段内同步栅格的数量取值落入(256×(M-1)，256×M]。
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000025
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000026
的指示。
又有，在本实施例中，
Figure PCTCN2022130984-appb-000027
实现了在频段中同步栅格的数量大于256的情况下，由搜索到的NCD-SSB所在同步栅格到对应CD-SSB所在同步栅格的指示，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
进一步地，在本实施例中，可以根据用于表征CRB(Common Resource Block，公共资源块)的子载波零与SSB的子载波零之间的子载波偏移参数K SSB来确定搜索到的SSB是否为NCD-SSB，并且在搜索到的SSB为NCD-SSB的情况下可以根据K SSB的取值来进一步确定频域位置偏移的实际方向。例如，当K SSB＝P 1时，
Figure PCTCN2022130984-appb-000028
的取值范围为[1，256×M]；当K SSB＝P 2时，
Figure PCTCN2022130984-appb-000029
的取值范围为[-256×M，-1]。由此，在本实施例的基础上，可以仅配置K SSB的两个取值，来指示pdcch-configSIB1(物理广播控制信道-系统信息块1的配置参数)与
Figure PCTCN2022130984-appb-000030
之间的两组映射关系。
进一步的，在频段内搜索到非小区定义同步信号块NCD-SSB之前，还包括如下内容：
当K SSB的取值落入[0，p 0]时，确定SSB为CD-SSB，解调CD-SSB以尝试发起小区接入。
当K SSB的取值落入[p 0+1，p 0+2M]时，确定SSB为NCD-SSB，根据NCD-SSB确定目标CD-SSB，解调目标CD-SSB以尝试发起小区接入。
具体的，由上述实施例可以得知，K SSB的取值可以根据SSB的子载波间隔与对应的type0-PDCCH的子载波间隔的差异配置。作为一种实施方式，可以将K SSB配置为：当K SSB取值[0，p 0]时，SSB为CD-SSB，终端设备可以直接尝试接入小区；当K SSB取值[p 0+1，p 0+2M时，SSB为NCD-SSB，终端设备可以基于NCD-SSB以及KSSB找到合适的CD-SSB并尝试接入小区。
需要说明是，p 0及M均为正整数，且p 0的取值同样可以根据SSB的子载波间隔与对应的type0-PDCCH的子载波间隔的差异确定；同时，频段内同步栅格的数量取值落入(256×(M-1)，256×M]。
上述方案中，当K SSB取值落入[0，p 0]时，可以直接基于搜索到的SSB尝试接入小区；当K SSB取值落入[p 0+1，p 0+2M]时，可以基于K SSB找到合适的CD-SSB并尝试接入小区。因此，在高于52.6GHz的频段中，当SSB的子载波间隔与CORESET#0所在PDCCH的子载波间隔不相同时，终端设备可以找到合适的CD-SSB，从而减少了接入小区的延迟。
在另一些实施方式中，指示参数通过子载波偏移参数K SSB和扩展参数A的组合得到，这种情况下，子载波偏移参数K SSB的取值即表征SSB的子载波偏移。
终端设备在尝试小区接入时，解析SSB中的子载波偏移参数K SSB和扩展参数A，当扩展参数A的取值为空或落入第一范围，并且子载波偏移参数K SSB的取值或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第二范围时，则确定SSB的类型为CD-SSB，解调CD-SSB以尝试发起小区接入。
当扩展参数A的取值落入第三范围，并且子载波偏移参数K SSB的取值或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第四范围时，则确定SSB的类型为NCD-SSB，根据NCD-SSB确定目标CD-SSB，然后解调目标CD-SSB以尝试发起小区接入。
例如，子载波偏移参数K SSB与扩展参数A的拼接方式依然是扩展参数A占用高阶位比特，而子载波偏移参数K SSB占用低阶位比特，并且，扩展参数A占用1比特，子载波偏移参数K SSB占用4比特。
在该示例中，若扩展参数A的取值为空或者落入第一范围(如第一范围为0)，此时若子载波偏移参数K SSB的取值落入第二范围(如第二范围为0-11)或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第二范围(如第二范围为0-11)时，此时可确定SSB的类型为CD-SSB，可直接根据CD-SSB进行小区接入。当扩展参数A的取值落入第三范围(如第三范围为1)，此时若子载波偏移参数K SSB的取值落入第四范围(如第四范围为12-13)，或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第四范围(第四范围为28-29)，则确定SSB的类型为NCD-SSB，此时可根据NCD-SSB获取目标CD-SSB，进而根据目标CD-SSB进行小区接入。
可以理解地，其中第二范围的具体取值范围可以根据实际情况中SSB与CORESET#0分别对应的子载波间隔确定。
在上述实现过程中，通过子载波偏移参数K SSB与扩展参数A进行组合得到指示参数，这样可以直接根据扩展参数A的取值范围来初步判断SSB类型。
具体地，在本实施例中，可以配置相邻两个CD-SSB之间的间隔为M-1，从而有相邻两个GSCN CD-SSB之间的间隔为M-1，进而有相邻两个
Figure PCTCN2022130984-appb-000031
之间的间隔为M-1。基于此，
Figure PCTCN2022130984-appb-000032
可以根据以下公式确定：
Figure PCTCN2022130984-appb-000033
其中，S的取值落入[1，M]，控制资源集合零controlResourceSetZero与搜索空间零searchSpaceZero包括在pdcch-configSIB1中，并且分别占用4个比特。
如此，在频段中同步栅格的数量大于256的情况下，本实施例可以在SSB所对应的PDCCH-configSIB1等配置不变的情况下，适应频段内同步栅格数量的改变，实现
Figure PCTCN2022130984-appb-000034
取值范围的改变，并且，仅需配置K SSB的两个取值，即可指示pdcch-configSIB1与
Figure PCTCN2022130984-appb-000035
之间 的两组映射关系，进而可以基于搜索到的NCD-SSB所对应的K SSB与pdcch-configSIB1来确定
Figure PCTCN2022130984-appb-000036
的取值，以确定GSCN CD-SSB的频域位置，从而实现小区接入。
本实施例的频域位置确定方法，适用于频段内同步栅格的数量大于256的情况。此时，频段的最低频率可以不小于52.6GHz，例如，本实施例的频域位置确定方法可以适用于频段52.6GHz-71GHz，根据RAN1105e的会议结论，在52.6GHz-71GHz的频率范围内，同步栅格的数量不能超过665。
例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过512时，有M＝2，从而有
Figure PCTCN2022130984-appb-000037
的取值落入[1，512]，实现了
Figure PCTCN2022130984-appb-000038
的取值从[1，256]到[1，512]的扩展，可以支持频段内同步栅格的数量最大为512的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000039
之间的关系，可以如表3所示：
表3：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000040
之间的关系(M＝2)
Figure PCTCN2022130984-appb-000041
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000042
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000043
又例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过665时，有M＝3，从而有
Figure PCTCN2022130984-appb-000044
的取值落入[1，768]，实现了
Figure PCTCN2022130984-appb-000045
的取值从[1，256]到[1，768]的扩展，可以支持频段内同步栅格的数量最大为768的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000046
之间的关系，可以如表4所示：
表4：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000047
之间的关系(M＝3)
Figure PCTCN2022130984-appb-000048
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000049
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000050
在S取值为3时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000051
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000052
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000053
的指示，从而能够基于搜索到的NCD-SSB来确定对应CD-SSB的频域位置，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
实施例2：
本实施例提供一种小区广播方法，本实施例的小区广播方法可以应用于基站等网络设备，并且具体可以包括在频段内广播同步信号块SSB的步骤。
在本实施例中，当SSB为非小区定义NCD-SSB时，所对应的频域位置偏移
Figure PCTCN2022130984-appb-000054
的取值落入[1，256×M]，其中，
Figure PCTCN2022130984-appb-000055
表征小区定义同步信号块CD-SSB与NCD-SSB所在同步栅格的频域位置偏移，M为不小于2的整数，并且，频段内同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段的最小频率值不小于52.6GHz。
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000056
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000057
的指示。
又有，
Figure PCTCN2022130984-appb-000058
本实施例可以实现在频段中同步栅格的数量大于256的情况下，由搜索到的NCD-SSB所在同步栅格到对应CD-SSB所在同步栅格的指示，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
进一步地，在本实施例中，可以根据用于表征CRB(Common Resource Block，公共资源块)的子载波零与SSB的子载波零之间的子载波偏移的K SSB来指示所广播的SSB是否为NCD-SSB，并且在所广播的SSB为NCD-SSB的情况下可以根据K SSB的取值来进一步确定频域位置偏移的实际方向。例如，当K SSB＝P 1时，
Figure PCTCN2022130984-appb-000059
的取值范围为[1，256×M]；当K SSB＝P 2时，
Figure PCTCN2022130984-appb-000060
的取值范围为[-256×M，-1]。由此，在本实施例的基础上，可以仅配置K SSB的两个取值，来指示pdcch-configSIB1(物理广播控制信道-系统信息块1的配置参数)与
Figure PCTCN2022130984-appb-000061
之间的两组映射关系。
可选地，上述SSB与对应类型0-物理下行控制信道type0-PDCCH的子载波间隔不同，上述SSB包括用于指示上述SSB的子载波偏移的子载波偏移参数K SSB，并且，上述子载波偏 移参数K SSB的取值根据上述SSB的子载波间隔与对应的上述type0-PDCCH的子载波间隔的差异配置；
当上述子载波偏移参数K SSB的取值落入[0，p 0]时，表征上述SSB的类型为CD-SSB，其中，p 0为正整数，并且，p 0的取值根据上述SSB的子载波间隔与对应的上述type0-PDCCH的子载波间隔的差异确定；
当上述子载波偏移参数K SSB的取值落入[p 0+1，p 0+2M]时，表征上述SSB的类型为NCD-SSB。
可选地，在上述SSB的类型为NCD-SSB时，上述
Figure PCTCN2022130984-appb-000062
根据上述NCD-SSB对应的上述子载波偏移参数K SSB与物理下行控制信道-系统信息块1配置参数PDCCH-configSIB1确定；其中：
当上述子载波偏移参数K SSB＝p 0+1+i时，所对应的
Figure PCTCN2022130984-appb-000063
的取值落入[256×i+1，256×i+1，其中，i为整数，并且，0≤i≤M-1；
当上述子载波偏移参数K SSB＝p 0+1+i+M时，所对应的
Figure PCTCN2022130984-appb-000064
的取值落入[-256×(i+1)，-(256×i+1)]；
和/或，
p 0取值为小于12/j的最大整数值，其中，j表征上述SSB与对应上述type0-PDCCH的子载波间隔的比值。
可选地，上述SSB包括用于指示上述SSB的类型的指示参数，上述指示参数通过子载波偏移参数K SSB和扩展参数A拼接得到；
当上述指示参数的取值落入第一范围时，确定上述SSB的类型为CD-SSB，解调上述CD-SSB以尝试发起小区接入，其中，上述指示参数的取值表征上述SSB的子载波偏移；
当上述指示参数的取值落入第二范围时，确定上述SSB的类型为NCD-SSB。
可选地，当上述SSB的类型为NCD-SSB且上述指示参数的取值为p 1+i时，所对应的
Figure PCTCN2022130984-appb-000065
的取值落入[256×i+1，256×(i+1)]，其中，p 1是表征上述SSB的类型为NCD-SSB时上述指示参数的最小取值，i是整数，并且，0≤i≤M-1；
当上述SSB的类型为NCD-SSB且上述指示参数的取值为p 1+i+M时，所对应的
Figure PCTCN2022130984-appb-000066
的取值落入[-256×(i+1)，-(256×i+1)]。
可选地，上述SSB包括用于指示上述SSB的类型的指示参数，上述指示参数通过子载波偏移参数K SSB和扩展参数A组合得到；
当上述扩展参数A的取值为空或者落入第三范围，并且上述子载波偏移参数K SSB的取值或者上述子载波偏移参数K SSB与上述扩展参数A拼接后的取值落入第四范围时，确定上述SSB的类型为CD-SSB，解调上述CD-SSB，其中，上述子载波偏移参数K SSB的取值表征上述SSB的子载波偏移；
当上述扩展参数A的取值落入第五范围，并且上述子载波偏移参数K SSB的取值或者上述子载波偏移参数K SSB与上述扩展参数A拼接后的取值落入第六范围时，确定上述SSB的类型为NCD-SSB。
可选地，当上述SSB的类型为NCD-SSB且上述指示参数的取值为p 2+i时，所对应的
Figure PCTCN2022130984-appb-000067
的取值落入[256×i+1，256×(i+1)]，其中，p 2是表征上述SSB的类型为NCD-SSB时上述子载波偏移参数K SS B的最小取值或者上述子载波偏移参数K SSB与上述扩展参数A拼接后的最小取值，i是整数，并且，0≤i≤M-1；
当上述SSB的类型为NCD-SSB且上述指示参数的取值为p2+i+M时，所对应的
Figure PCTCN2022130984-appb-000068
的取值落入[-256×(i+1)，-(256×i+1)]。
具体地，在本实施例中，可以在频段内以M-1个同步栅格为间隔广播CD-SSB，也即，配置相邻两个GSCN CD-SSB之间的间隔为M-1，从而有相邻两个
Figure PCTCN2022130984-appb-000069
之间的间隔为M-1。基于此，
Figure PCTCN2022130984-appb-000070
可以根据以下公式确定：
Figure PCTCN2022130984-appb-000071
其中，S的取值落入[1，M]，控制资源集合零controlResourceSetZero与搜索空间零searchSpaceZero包括在pdcch-configSIB1中，并且分别占用4个比特。
如此，在频段中同步栅格的数量大于256的情况下，本实施例可以在SSB所对应的pdcch-configSIB1等配置不变的情况下，适应频段内同步栅格数量的改变，实现
Figure PCTCN2022130984-appb-000072
取值范围的改变，并且，仅需配置K SSB的两个取值，即可指示pdcch-configSIB1与
Figure PCTCN2022130984-appb-000073
之间的两组映射关系，进而可以基于搜索到的NCD-SSB所对应的K SSB与pdcch-configSIB1来确定
Figure PCTCN2022130984-appb-000074
的取值，以确定GSCN CD-SSB的频域位置，从而实现小区接入。
本实施例的小区广播方法，适用于频段内同步栅格的数量大于256的情况。此时，频段的最低频率可以不小于52.6GHz，例如，本实施例的小区广播方法可以适用于频段52.6GHz-71GHz，根据RAN1105e的会议结论，在52.6GHz-71GHz的频率范围内，同步栅格的数量不能超过665。
例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过512时，有M＝2，从而有
Figure PCTCN2022130984-appb-000075
的取值落入[1，512]，实现了
Figure PCTCN2022130984-appb-000076
的取值从[1，256]到[1，512]的扩展，可以支持频段内同步栅格的数量最大为512的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000077
之间的关系，亦如表3所示：
表3：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000078
之间的关系(M＝2)
Figure PCTCN2022130984-appb-000079
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000080
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000081
又例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过665时，有M＝3，从而有
Figure PCTCN2022130984-appb-000082
的取值落入[1，768]，实现了
Figure PCTCN2022130984-appb-000083
的取值从[1，256]到[1，768]的扩展，从而可以支持频段内同步栅格的数量最大为768的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000084
之间的关系，亦如表4所示：
表4：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000085
之间的关系(M＝3)
Figure PCTCN2022130984-appb-000086
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000087
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000088
在S取值为3时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000089
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000090
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000091
的指示，从而能够使得终端设备基于搜索到的NCD-SSB来 确定对应CD-SSB的频域位置，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
该实施例中的内容与网络侧的方法或者终端侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例3：
本实施例提供一种同步信号块的频域位置确定系统，并且，本实施例的频域位置确定系统可以应用于手机、平板电脑、可穿戴设备等终端设备，图3示出了本实施例的频域位置确定系统的模块示意图。参照图3，本实施例的频域位置确定系统包括：
第一确定模块301，用于在频段内搜索到非小区定义同步信号块NCD-SSB时，确定所对应的频域位置偏移
Figure PCTCN2022130984-appb-000092
第二确定模块302，用于根据NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB和
Figure PCTCN2022130984-appb-000093
确定CD-SSB所在同步栅格的频域位置GSCN CD-SSB。
在本实施例中，
Figure PCTCN2022130984-appb-000094
表征小区定义同步信号块CD-SSB与非小区定义同步信号块NCD-SSB所在同步栅格的频域位置偏移，
Figure PCTCN2022130984-appb-000095
的取值落入[1，256×M]，M为不小于2的整数，并且，频段内同步栅格的数量取值落入(256×(M-1)，256×M]。
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000096
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000097
的指示。
又有，在本实施例中，
Figure PCTCN2022130984-appb-000098
实现了在频段中同步栅格的数量大于256的情况下，由搜索到的NCD-SSB所在同步栅格到对应CD-SSB所在同步栅格的指示，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
进一步地，在本实施例中，第一确定模块301可以根据用于表征CRB(Common Resource Block，公共资源块)的子载波零与SSB的子载波零之间的子载波偏移的K SSB来确定搜索到的SSB是否为NCD-SSB，并且在搜索到的SSB为NCD-SSB的情况下可以根据K SSB的取值来进一步确定频域位置偏移的实际方向。例如，当K SSB＝P 1时，
Figure PCTCN2022130984-appb-000099
的取值范围为[1，256×M]；当K SSB＝P 2时，
Figure PCTCN2022130984-appb-000100
的取值范围为[-256×M，-1]。由此，在本实施例的基础上，可以仅配置K SSB的两个取值，来指示pdcch-configSIB1(物理广播控制信道-系统信息块1的配置参数)与
Figure PCTCN2022130984-appb-000101
之间的两组映射关系。
具体地，在本实施例中，可以配置相邻两个CD-SSB之间的间隔为M-1，从而有第二确定模块302确定得到的相邻两个GSCN CD-SSB之间的间隔为M-1，进而有相邻两个
Figure PCTCN2022130984-appb-000102
之间的间隔为M-1。基于此，第一确定模块301可以根据以下公式确定
Figure PCTCN2022130984-appb-000103
Figure PCTCN2022130984-appb-000104
其中，S的取值落入[1，M]，控制资源集合零controlResourceSetZero与搜索空间零searchSpaceZero包括在pdcch-configSIB1中，并且分别占用4个比特。
如此，在频段中同步栅格的数量大于256的情况下，本实施例可以在SSB所对应的pdcch-configSIB1等配置不变的情况下，适应频段内同步栅格数量的改变，实现
Figure PCTCN2022130984-appb-000105
取值范围的改变，并且，仅需配置K SSB的两个取值，即可指示pdcch-configSIB1与
Figure PCTCN2022130984-appb-000106
之间的两组映射关系，进而可以基于搜索到的NCD-SSB所对应的K SSB与pdcch-configSIB1来确定
Figure PCTCN2022130984-appb-000107
的取值，以确定GSCN CD-SSB的频域位置，从而实现小区接入。
本实施例的频域位置确定系统，适用于频段内同步栅格的数量大于256的情况。此时，频段的最低频率可以不小于52.6GHz，例如，本实施例的频域位置确定系统可以适用于频段52.6GHz-71GHz，根据RAN1105e的会议结论，在52.6GHz-71GHz的频率范围内，同步栅格的数量不能超过665。
例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过512时，有M＝2，从而有
Figure PCTCN2022130984-appb-000108
的取值落入[1，512]，实现了
Figure PCTCN2022130984-appb-000109
的取值从[1，256]到[1，512]的扩展，可以支持频段内同步栅格的数量最大为512的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000110
之间的关系，亦如表3所示：
表3：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000111
之间的关系(M＝2)
Figure PCTCN2022130984-appb-000112
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000113
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000114
又例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过665时，有M＝3，从而有
Figure PCTCN2022130984-appb-000115
的取值落入[1，768]，实现了
Figure PCTCN2022130984-appb-000116
的取值从[1，256]到[1，768]的扩展，可以支持频段内同步栅格的数量最大为768的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000117
之间的关系，亦如表4所示：
表4：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000118
之间的关系(M＝3)
Figure PCTCN2022130984-appb-000119
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000120
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000121
在S取值为3时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000122
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000123
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000124
的指示，从而能够基于搜索到的NCD-SSB来确定对应CD-SSB的频域位置，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
该实施例中的内容与网络侧的方法或者终端侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例4：
本实施例提供一种小区广播系统，本实施例的小区广播系统可以应用于基站等网络设备，并且具体可以包括用于在频段内广播同步信号块SSB的广播模块。
在本实施例中，当SSB为非小区定义NCD-SSB时，所对应的频域位置偏移
Figure PCTCN2022130984-appb-000125
的取值落入[1，256×M]，其中，
Figure PCTCN2022130984-appb-000126
表征小区定义同步信号块CD-SSB与NCD-SSB所在同步栅格的频域位置偏移，M为不小于2的整数，并且，频段内同步栅格的数量取值落入(256×(M-1)，256×M]。
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000127
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000128
的指示。
又有，
Figure PCTCN2022130984-appb-000129
本实施例可以实现在频段中同步栅格的数量大于256的情况下，由搜索到的NCD-SSB所在同步栅格到对应CD-SSB所在同步栅格 的指示，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设备接入小区的时延。
进一步地，在本实施例中，可以根据用于表征CRB(Common Resource Block，公共资源块)的子载波零与SSB的子载波零之间的子载波偏移参数K SSB来指示所广播的SSB是否为NCD-SSB，并且在所广播的SSB为NCD-SSB的情况下可以根据K SSB的取值来进一步确定频域位置偏移的实际方向。例如，当K SSB＝P 1时，
Figure PCTCN2022130984-appb-000130
的取值范围为[1，256×M]；当K SSB＝P 2时，
Figure PCTCN2022130984-appb-000131
的取值范围为[-256×M，-1]。由此，在本实施例的基础上，可以仅配置K SSB的两个取值，来指示pdcch-configSIB1(物理广播控制信道-系统信息块1的配置参数)与
Figure PCTCN2022130984-appb-000132
之间的两组映射关系。
具体地，在本实施例中，广播模块可以在频段内以M-1个同步栅格为间隔广播CD-SSB，也即，配置相邻两个GSCN CD-SSB之间的间隔为M-1，从而有相邻两个
Figure PCTCN2022130984-appb-000133
之间的间隔为M-1。基于此，
Figure PCTCN2022130984-appb-000134
可以根据以下公式确定：
Figure PCTCN2022130984-appb-000135
其中，S的取值落入[1，M]，控制资源集合零controlResourceSetZero与搜索空间零searchSpaceZero包括在pdcch-configSIB1中，并且分别占用4个比特。
如此，在频段中同步栅格的数量大于256的情况下，本实施例可以在SSB所对应的pdcch-configSIB1等配置不变的情况下，适应频段内同步栅格数量的改变，实现
Figure PCTCN2022130984-appb-000136
取值范围的改变，并且，仅需配置K SSB的两个取值，即可指示pdcch-configSIB1与
Figure PCTCN2022130984-appb-000137
之间的两组映射关系，进而可以基于搜索到的NCD-SSB所对应的K SSB与pdcch-configSIB1来确定
Figure PCTCN2022130984-appb-000138
的取值，以确定GSCN CD-SSB的频域位置，从而实现小区接入。
本实施例的小区广播系统，适用于频段内同步栅格的数量大于256的情况。此时，频段的最低频率可以不小于52.6GHz，例如，本实施例的小区广播系统可以适用于频段52.6GHz-71GHz，根据RAN1105e的会议结论，在52.6GHz-71GHz的频率范围内，同步栅格的数量不能超过665。
例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过512时，有M＝2，从而有
Figure PCTCN2022130984-appb-000139
的取值落入[1，512]，实现了
Figure PCTCN2022130984-appb-000140
的取值从[1，256]到[1，512]的扩展，可以支持频段内同步栅格的数量最大为512的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000141
之间的关系，亦如表3所示：
表3：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000142
之间的关系(M＝2)
Figure PCTCN2022130984-appb-000143
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000144
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1111，searchSpaceZero被配置为1111，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000145
又例如，对于52.6GHz-71GHz的频率范围，当同步栅格的数量不超过665时，有M＝3，从而有
Figure PCTCN2022130984-appb-000146
的取值落入[1，768]，实现了
Figure PCTCN2022130984-appb-000147
的取值从[1，256]到[1，768]的扩展，从而可以支持频段内同步栅格的数量最大为768的情况，并且，K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000148
之间的关系，亦如表4所示：
表4：K SSB、pdcch-configSIB1以及
Figure PCTCN2022130984-appb-000149
之间的关系(M＝3)
Figure PCTCN2022130984-appb-000150
在S取值为1时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000151
在S取值为2时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000152
在S取值为3时，根据搜索到的NCD-SSB，若有，controlResourceSetZero被配置为1000，searchSpaceZero被配置为0001，当K SSB被配置为P 1时，有
Figure PCTCN2022130984-appb-000153
本实施例实现了在频段中同步栅格的数量大于256的情况下，基于频段内同步栅格的数量，对
Figure PCTCN2022130984-appb-000154
取值范围的直接扩展，也即，能够在该频段内实现CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000155
的指示，从而能够使得终端设备基于搜索到的NCD-SSB来确定对应CD-SSB的频域位置，进而能够缩短终端设备获取CD-SSB的时间，并缩短终端设 备接入小区的时延。
该实施例中的内容与网络侧的方法或者终端侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例5：
本实施例提供一种电子设备，电子设备可以通过计算设备的形式表现(例如可以为服务器设备)，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序。其中处理器执行计算机程序时可以实现实施例1提供的同步信号块的频域位置确定方法，此时，电子设备可以是手机、平板电脑、可穿戴设备等终端设备；或者，处理器执行计算机程序时可以实现实施例2提供的小区广播方法，此时，电子设备可以是基站等网络设备。
图4示出了本实施例的硬件结构示意图，如图4所示，电子设备9具体包括：
至少一个处理器91、至少一个存储器92以及用于连接不同系统组件(包括处理器91和存储器92)的总线93，其中：
总线93包括数据总线、地址总线和控制总线。
存储器92包括易失性存储器，例如随机存取存储器(RAM)921和/或高速缓存存储器922，还可以进一步包括只读存储器(ROM)923。
存储器92还包括具有一组(至少一个)程序模块924的程序/实用工具925，这样的程序模块924包括但不限于：操作系统、一个或者多个应用程序、其它程序模块以及程序数据，这些示例中的每一个或某种组合中可能包括网络环境的实现。
处理器91通过运行存储在存储器92中的计算机程序，从而执行各种功能应用以及数据处理，例如本发明实施例1所提供的同步信号块的频域位置确定方法，或者实现实施例2所提供的小区广播方法。
电子设备9进一步可以与一个或多个外部设备94(例如键盘、指向设备等)通信。这种通信可以通过输入/输出(I/O)接口95进行。并且，电子设备9还可以通过网络适配器96与一个或者多个网络(例如局域网(LAN)，广域网(WAN)和/或公共网络，例如因特网)通信。网络适配器96通过总线93与电子设备9的其它模块通信。应当明白，尽管图中未示出，可以结合电子设备9使用其它硬件和/或软件模块，包括但不限于：微代码、设备驱动器、冗余处理器、外部磁盘驱动阵列、RAID(磁盘阵列)系统、磁带驱动器以及数据备份存储系统等。
应当注意，尽管在上文详细描述中提及了电子设备的若干单元/模块或子单元/模块，但是这种划分仅仅是示例性的并非强制性的。实际上，根据本申请的实施方式，上文描述的两个或更多单元/模块的特征和功能可以在一个单元/模块中具体化。反之，上文描述的一个单元/模块的特征和功能可以进一步划分为由多个单元/模块来具体化。
该实施例中的内容与网络侧的方法或者终端侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例6：
本实施例提供了一非暂态计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现实施例1所提供的同步信号块的频域位置确定方法的步骤，或者实现实施例2所提供的小区广播方法的步骤。
其中，可读存储介质可以采用的更具体可以包括但不限于：便携式盘、硬盘、随机存取存储器、只读存储器、可擦拭可编程只读存储器、光存储器件、磁存储器件或上述的任意合适的组合。
在可能的实施方式中，本发明还可以实现为一种程序产品的形式，其包括程序代码，当所述程序产品在终端设备上运行时，所述程序代码用于使所述终端设备执行实现实施例1所述的同步信号块的频域位置确定方法的步骤，或者实现实施例2所述的小区广播方法的步骤。
其中，可以以一种或多种程序设计语言的任意组合来编写用于执行本发明的程序代码，所述程序代码可以完全地在用户设备上执行、部分地在用户设备上执行、作为一个独立的软件包执行、部分在用户设备上部分在远程设备上执行或完全在远程设备上执行。
该实施例中的内容与网络侧的方法或者终端侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例7：
在终端设备刚开机进行小区搜索时，其只能根据运营商以及终端设备支持的频段来检测SSB信号，进行下行时频同步，由于全局频率栅格的粒度较小导致NR绝对频点(NR Absolute Radio Frequency Channel Number，NR-ARFCN)(用于对参考频率的频域范围进行编码)的取值范围较大，如果直接根据全局频率栅格进行盲检，则同步时延会比较大。所以，为了有效的降低此过程的同步时延，定义了同步栅格的概念，并通过全局同步信道号(Global Synchronization Channel Number，GSCN)来限定搜索范围。如下表所示，每个同步栅格对应一个GSCN，计算GSCN的公式可通过表中的第三列获取。需要说明的是，不同频段范围内的synch raster的粒度不同，具体地，当频段介于0GHz-3GHz时，synch raster的粒度为50kHz；当频段范围介于3GHz-24.25GHz之间时，synch raster的粒度为1.44MHz；当频段范围介于24.25GHz-100GHz之间时，synch raster的粒度为17.28MHz。
比如，在频段范围24.25GHz-100GHz之间，当N＝1时，synch raster的频域位置为24250.08+1*17.28＝24267.36MHz，其对应的GSCN号为22257。
Figure PCTCN2022130984-appb-000156
对于同步栅格，在不同的频段下，同步栅格在部分频段内的分布通过如图5确定。例如，对于频段n12，同步栅格的编号范围为1828-1858，共31个同步栅格，该编号即为GSCN。终端设备根据特定频段下的同步栅格的位置，搜索SSB，从而可从SSB中获得主信息块MIB和系统信息块SIB1信息。
上述的SIB1也可称为剩余最小系统信息(Remaining Minimum System Information，RMSI)，然而并不是每个SSB中都携带有对应的RMSI，RMSI可用于指示终端设备进行小区接入，所以终端设备要接入小区，则需要获得SSB中的RMSI，为了使得终端设备能够知晓SSB中是否携带有RMSI，定义了通过子载波偏移参数K SSB来指示，即通过子载波偏移参数K SSB来指示SSB中是否携带有对应的RMSI，子载波偏移参数K SSB表示SSB与控制资源集#0(CORESET#0，Control-Resource Set#0)之间RE-level(Resource Element-level，资源粒子级别)的offset(偏移)。
若SSB中携带有RMSI，对于这类SSB可以称为小区定义CD-SSB，终端设备只有扫描到CD-SSB时才能进行小区接入，而若SSB中未携带有RMSI，对于这类SSB可以称为非小区定义NCD-SSB，即SSB可以分为CD-SSB和NCD-SSB，CD-SSB主要用于小区的初始接入，包括接入小区的RMSI信息，而NCD-SSB主要用于除小区的初始接入之外的其他情形，比如测量，无法支持终端设备的小区接入。
在NR系统的不同频率范围下，子载波偏移参数K SSB所指示的信息不同，如图6所示，在FR1(450MHz-6GHz)频率范围内，该子载波偏移参数K SSB包括5比特，可以表示数值0-31， 其中，在子载波偏移参数K SSB取值为24-29时，其表示SSB的类型为NCD-SSB，此时无法进行小区接入，若子载波偏移参数K SSB取值为0-23时，表示SSB的类型为CD-SSB，可以进行小区接入。如图7所示，在FR2(24.25GHz-52.6GHz)频率范围内，子载波偏移参数K SSB包括4比特，可以表示数值0-15，其中，在子载波偏移参数K SSB取值为12-13时，表示SSB的类型为NCD-SSB，在子载波偏移参数K SSB取值为0-11时，表示SSB的类型为CD-SSB。
应理解，图6和图7中通过子载波偏移参数K SSB和MIB中的参数pdcch-ConfigSIB1联合指示目标CD-SSB所在的同步栅格的GSCN相比NCD-SSB所在的同步栅格的GSCN的频域位置偏移
Figure PCTCN2022130984-appb-000157
也就是说，若在FR1频率范围内，终端设备从当前搜索到的SSB中解析出子载波偏移参数K SSB的取值为24至29时，或者在FR2频率范围内，终端设备解析出子载波偏移参数K SSB的取值为12至13时，确定当前SSB的类型为NCD-SSB，此时终端设备可以根据MIB中的参数pdcch-ConfigSIB1中的controlResourceSetZero和searchSpaceZero来确定CD-SSB和NCD-SSB之间GSCN的offset，即频域位置偏移
Figure PCTCN2022130984-appb-000158
这样终端设备在获得对应的
Figure PCTCN2022130984-appb-000159
后，可通过图6或图7中的频域位置偏移
Figure PCTCN2022130984-appb-000160
+当前NCD-SSB的GSCN即可得到目标CD-SSB所在的同步栅格的GSCN，进而实现小区接入。
而针对52.6GHz以上的频段，目前系统可支持的子载波间隔为120kHz，480kHz和960kHz。在Rel-17的NR系统架构下的初始接入过程中，除了支持120kHz之外，还可以支持480kHz，即初始接入过程中的SSB、type0-PDCCH、携带SIB1的PDSCH、其它信息(Other System Information，OSI)以及PRACH过程中的msg.2/4都可使用120kHz或者480kHz。
对于52.6GHz以上的频段，例如，52.6GHz-71GHz是新的一块频段，且只定义为一个频段(band)，因此，在SSB的子载波间隔为120kHz和480kHz下，需重新设计同步栅格的频域位置。在实际应用中，在52.6GHz-71GHz的频段内，不管支持多少子载波间隔，其同步栅格的数量不能超过665，也就是说，在52.6GHz以上的同步栅格的数量可能会超过256。
为了适应同步栅格的数量配置增大，本申请中增加了扩展参数A，通过包括扩展参数A和子载波偏移参数K SSB的指示参数来指示SSB的类型，以此指示更大取值范围的
Figure PCTCN2022130984-appb-000161
使得在同步栅格的数量配置增大时，子载波偏移参数K SSB的配置不受影响且超出原范围的
Figure PCTCN2022130984-appb-000162
也能够被指示，以便于终端设备能够通过NCD-SSB找到合适的CD-SSB，减少其接入小区的延迟。
应当理解，在FR1或FR2所对应的同步栅格的数量配置发生变化时，本申请亦能够适用。例如，对于FR2，当同步栅格的数量大于256且小于512时，可以配置K SSB＝12对应
Figure PCTCN2022130984-appb-000163
的取值范围[1，256]，K SSB＝13对应
Figure PCTCN2022130984-appb-000164
的取值范围[257，512]，K SSB＝14对应
Figure PCTCN2022130984-appb-000165
的取值范围[-256，-1]，K SSB＝15对应
Figure PCTCN2022130984-appb-000166
的取值范围[-512，-257]，而当同步栅格的数量大于512时，在不改变子载波偏移参数K SSB所占用比特数的情况下，超出部分则无法被指示，在该种情况下，则可以适用本申请，以克服所述缺陷。
请参照图5，图5为本申请实施例提供的一种小区接入方法的流程图，该方法应用于终端设备，该方法包括如下步骤：
步骤S210：在频段内搜索到同步信号块SSB时，根据搜索到的所述SSB确定是否尝试 发起小区接入。
本申请实施例中，所适用的频段例如可以是最小频率值不小于52.6GHz的频段，即终端设备在大于或等于52.6GHz的频段内进行SSB搜索，例如，在频段52.6GHz-71GHz内进行SSB搜索。参见上文，在该频段内，同步栅格的数量最大可达665，在不增加子载波偏移参数K SSB所占用比特数的情况下，可能无法对所有同步栅格进行指示，所以，本申请为了在不改变子载波偏移参数K SSB配置的前提下，能够对超出原范围的
Figure PCTCN2022130984-appb-000167
进行指示，以便适应频段内同步栅格数量配置的增大，具体地，增加一个扩展参数A，通过扩展参数A和K SSB来表示用于指示SSB类型的指示参数，即指示参数包括子载波偏移参数K SSB和扩展参数A。由于增加了扩展参数A，使得指示参数较之子载波偏移参数K SSB具有更大的取值范围，使得指示参数能够指示更大取值范围的频域位置偏移
Figure PCTCN2022130984-appb-000168
进而能够适应同步栅格数量配置的增大来指示更大取值范围的
Figure PCTCN2022130984-appb-000169
终端设备在搜索到SSB后，可对SSB进行解析，SSB包括用于指示SSB的类型的指示参数，当指示参数指示SSB的类型为NCD-SSB时，指示参数对应的
Figure PCTCN2022130984-appb-000170
的取值落入[1，256×M]，其中，
Figure PCTCN2022130984-appb-000171
表征小区定义CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，M是不小于2的整数，并且，所述频段内同步栅格的数量取值落入(256×M-1，256×M。
也就是说，
Figure PCTCN2022130984-appb-000172
的取值范围与同步栅格的数量相关，例如，对于某频段，在确定子载波偏移参数K SSB占用4比特且同步栅格的数量取值为665，K SSB的取值落入0-11时表征搜索到的SSB的类型为CD-SSB时，有M的取值为3，K SSB的取值落入12-17时表征搜索到的SSB的类型为NCD-SSB，并且可以对取值范围为-768到768的
Figure PCTCN2022130984-appb-000173
进行指示，
Figure PCTCN2022130984-appb-000174
的取值范围与指示参数的对应关系如下表所示：
Figure PCTCN2022130984-appb-000175
可以理解地，在实际应用中，可以根据同步栅格的数量配置对q进行取值，这样可以根据需求灵活对
Figure PCTCN2022130984-appb-000176
进行指示。
基站在广播SSB时，可以在SSB携带相应的指示参数，基站在广播SSB之前，可以配置SSB中指示参数、controlResourceSetZero和searchSpaceZero与频域位置偏移
Figure PCTCN2022130984-appb-000177
之间的对应关系，这样终端设备在解析到指示参数指示当前SSB的类型为NCD-SSB时，可以直接根据对应关系获取频域位置偏移
Figure PCTCN2022130984-appb-000178
从而可基于搜索到的NCD-SSB及其对应的频域位置偏移
Figure PCTCN2022130984-appb-000179
找到CD-SSB的频域位置，进而实现小区接入。
在上述实现过程中，在子载波偏移参数K SSB占用比特数确定的情况下，为了适应同步栅格的数量增加而对更大取值范围的频域位置偏移
Figure PCTCN2022130984-appb-000180
进行指示，本申请中增加一个扩展参数A，通过包括子载波偏移参数K SSB和扩展参数A的指示参数来指示SSB的类型，如此使得指示参数较之子载波偏移参数K SSB具有更大的取值范围，使得指示参数能够指示更大取值范围的频域位置偏移
Figure PCTCN2022130984-appb-000181
在同步栅格的数量配置增大时，子载波偏移参数K SSB的配置不受影响且超出原范围的频域位置偏移
Figure PCTCN2022130984-appb-000182
也能够被指示，从而对于终端设备来说，能够通过NCD-SSB找到合适的CD-SSB，缩短其接入小区的延迟。
在上述实施例的基础上，指示参数所占用的比特数可以根据实际应用自定义设置，其中，子载波偏移参数K SSB所占用的比特数由SSB所对应子载波间隔与CORESET#0所对应的子载波间隔确定，扩展参数A所占用的比特数可以适应同步栅格的数量配置来确定。例如，子载波偏移参数K SSB所占用的比特数为4比特，扩展参数A所占用的比特数可以为大于或等于1比特。
在一些实施方式中，指示参数可以通过子载波偏移参数K SSB和扩展参数A拼接得到，如果子载波偏移参数K SSB的比特数为4比特，扩展参数A的比特数为1比特，可以通过两个参数来拼接表示指示参数，其拼接方式可以为扩展参数A占用最高位比特，子载波偏移参数K SSB占用低4位比特。
例如，扩展参数A取值为0，子载波偏移参数K SSB取值为1100，则拼接后的指示参数的取值为01100，即此时两个参数拼接所表示指示参数的取值为12。当然，在拼接时，也可以是扩展参数A占用最低位比特，子载波偏移参数K SSB占用高4位比特，通过这种方式拼接，也可以使得指示参数的取值范围为0-31。
在子载波偏移参数K SSB占用4比特的情况下，其所指示的频域位置偏移的范围较小，可能不足以指示频段内的所有同步栅格，所以通过增加扩展参数A来指示更大取值范围的频域位置偏移
Figure PCTCN2022130984-appb-000183
并避免对子载波偏移参数K SSB的更改，如指示参数为5比特，可表示范围为0-31，从而能够指示更大取值范围的频域位置偏移。
在这种情况下，终端设备在尝试发起小区接入的过程如下：
当指示参数的取值落入第一范围时，确定SSB的类型为CD-SSB，然后可解调CD-SSB以尝试发起小区接入，其中，指示参数的取值表征SSB的子载波偏移，即通过原有的子载波偏移参数K SSB和扩展参数来共同表示子载波偏移。
当指示参数的取值落入第二范围时，确定SSB的类型为NCD-SSB，则根据NCD-SSB确定目标CD-SSB，解调目标CD-SSB以尝试发起小区接入。
例如，若指示参数的取值范围为0-31时，其中在终端设备解析到指示参数的取值落入第一范围(如第一范围为0-11)之间时，则表示SSB的类型为CD-SSB，此时可直接解调CD-SSB 尝试小区接入。在终端设备解析到指示参数的取值落入第二范围(如第二范围为12-17)之间时，则表示SSB的类型为NCD-SSB，此时还需要通过NCD-SSB来找到一个目标CD-SSB，以通过目标CD-SSB进行小区接入。
可以理解地，其中第一范围的具体取值范围可以根据实际情况中SSB与CORESET#0分别对应的子载波间隔确定。
在确定目标CD-SSB时，可以根据NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB以及
Figure PCTCN2022130984-appb-000184
确定目标CD-SSB的频域位置GSCN CD-SSB。
例如，预先配置了指示参数的取值与频域位置偏移
Figure PCTCN2022130984-appb-000185
之间的对应关系，如此可根据指示参数来获取频域位置偏移。例如，参照上表，若指示参数的取值为12且16*controlResourceSetZero+searchSpaceZero(也即，pdcch-configSIB1)取值为0，此时终端设备得到频域位置偏移
Figure PCTCN2022130984-appb-000186
的取值为1。
在获得频域位置偏移后，可将频域位置偏移加上NCD-SSB的频域位置GSCN NCD-SSB，则可获得目标CD-SSB的频域位置GSCN CD-SSB，如
Figure PCTCN2022130984-appb-000187
+GSCN NCD-SSB＝目标CD-SSB的GSCN CD-SSB，其中，GSCN NCD-SSB可以通过同步栅格来获得。
这种情况下，指示参数的取值与频域位置偏移的取值有一定的对应关系，如当所述指示参数的取值为p 1+i时，所对应的
Figure PCTCN2022130984-appb-000188
的取值落入[256×i+1，256×(i+1)]，其中，p 1是表征所述SSB的类型为NCD-SSB时所述指示参数的最小取值，i是整数，并且，0≤i≤M-1；当所述指示参数的取值为p 1+i+M时，所对应的
Figure PCTCN2022130984-appb-000189
的取值落入[-256×(i+1)，-256×i+1。
其中，M是不小于2的整数，p 1是SSB的类型为NCD-SSB时指示参数的最小取值。在M等于3时，可以参照上表，有p 1等于12。当i等于0时，有指示参数取值为12且对应
Figure PCTCN2022130984-appb-000190
的取值范围为[1，256]，以及指示参数取值为15且对应
Figure PCTCN2022130984-appb-000191
的取值范围为[-256，-1]；当i等于1时，有指示参数的取值为13且对应
Figure PCTCN2022130984-appb-000192
的取值范围为[257，512]，以及指示参数取值为16且对应
Figure PCTCN2022130984-appb-000193
的取值范围为[-512，-257]；当i等于2时，有指示参数取值为14且对应
Figure PCTCN2022130984-appb-000194
的取值范围为[513，768]，以及指示参数取值为17且对应
Figure PCTCN2022130984-appb-000195
的取值范围为[-768，-513]。其中，
Figure PCTCN2022130984-appb-000196
的取值范围随着指示参数的递增以256为单位递增，这是由于pdcch-configSIB1占用8比特。
在上述实现过程中，指示参数通过K SSB和扩展参数A拼接得到，这样可以通过扩展参数A和子载波偏移参数K SSB来限定指示参数的取值范围，进而指示更大取值范围的频域位置偏移
Figure PCTCN2022130984-appb-000197
使得在同步栅格的数量增大时，子载波偏移参数K SSB的配置不受影响且超出原范 围的频域位置偏移
Figure PCTCN2022130984-appb-000198
也能够被指示，进而终端设备能够从NCD-SSB找到合适的CD-SSB，实现小区的快速接入。
在另一些实施方式中，指示参数通过子载波偏移参数K SSB和扩展参数A的组合得到，这种情况下，子载波偏移参数K SSB的取值即表征SSB的子载波偏移。
终端设备在尝试小区接入时，解析SSB中的子载波偏移参数K SSB和扩展参数A，当扩展参数A的取值为空或落入第三范围，并且子载波偏移参数K SSB的取值或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第四范围时，则确定SSB的类型为CD-SSB，解调CD-SSB以尝试发起小区接入。
当扩展参数A的取值落入第五范围，并且子载波偏移参数K SSB的取值或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第六范围时，则确定SSB的类型为NCD-SSB，根据NCD-SSB确定目标CD-SSB，然后解调目标CD-SSB以尝试发起小区接入。
例如，子载波偏移参数K SSB与扩展参数A的拼接方式依然是扩展参数A占用高阶位比特，而子载波偏移参数K SSB占用低阶位比特，并且，扩展参数A占用1比特，子载波偏移参数K SSB占用4比特。
在该示例中，若扩展参数A的取值为空或者落入第三范围(如第三范围为0)，此时若子载波偏移参数K SSB的取值落入第四范围(如第四范围为0-11)或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第四范围(如第四范围为0-11)时，此时可确定SSB的类型为CD-SSB，可直接根据CD-SSB进行小区接入。当扩展参数A的取值落入第五范围(如第五范围为1)，此时若子载波偏移参数K SSB的取值落入第六范围(如第六范围为12-13)，或者子载波偏移参数K SSB与扩展参数A拼接后的取值落入第六范围(第六范围为28-29)，则确定SSB的类型为NCD-SSB，此时可根据NCD-SSB获取目标CD-SSB，进而根据目标CD-SSB进行小区接入。
可以理解地，其中第四范围的具体取值范围可以根据实际情况中SSB与CORESET#0分别对应的子载波间隔确定。
在上述实现过程中，通过子载波偏移参数K SSB与扩展参数A进行组合得到指示参数，这样可以直接根据扩展参数A的取值范围来初步判断SSB类型。
在上述实施例的基础上，在确定目标CD-SSB时，可以根据NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB以及
Figure PCTCN2022130984-appb-000199
确定目标CD-SSB的频域位置GSCN CD-SSB。
例如，预先配置了子载波偏移参数K SSB的取值与频域位置偏移
Figure PCTCN2022130984-appb-000200
之间的对应关系，如此可根据指示参数和对应pdcch-ConfigSIB 1的取值来获取频域位置偏移。在获得频域位置偏移后，可将频域位置偏移加上NCD-SSB的频域位置GSCN NCD-SSB，则可获得目标CD-SSB的频域位置GSCN CD-SSB，如
Figure PCTCN2022130984-appb-000201
+GSCN NCD-SSB＝目标CD-SSB的GSCN CD-SSB，其中，GSCN NCD-SSB可以通过同步栅格来获得。
这种情况下，指示参数的取值与频域位置偏移的取值有一定的对应关系，如当所述指示参数的取值为p 2+i时，所对应的
Figure PCTCN2022130984-appb-000202
的取值落入[256×i+1，256×(i+1)]，其中，p 2是表征所述SSB的类型为NCD-SSB时所述子载波偏移参数K SSB的最小取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的最小取值，i是整数，并且，0≤i≤M-1。当所述指示参数的取值为p 2+i+M时，所对应的
Figure PCTCN2022130984-appb-000203
的取值落入[-256×(i+1)，-(256×i+ 1)]。
其中，M是不小于2的整数，p 2是SSB的类型为NCD-SSB时指示参数的最小取值。在M等于3时，可以参照上表，有p 2等于12。当i等于0时，有指示参数取值为12且对应
Figure PCTCN2022130984-appb-000204
的取值范围为[1，256]，以及指示参数取值为15且对应
Figure PCTCN2022130984-appb-000205
的取值范围为[-256，-1]；当i等于1时，有指示参数的取值为13且对应
Figure PCTCN2022130984-appb-000206
的取值范围为[257，512]，以及指示参数取值为16且对应
Figure PCTCN2022130984-appb-000207
的取值范围为[-512，-257]；当i等于2时，有指示参数取值为14且对应
Figure PCTCN2022130984-appb-000208
的取值范围为[513，768]，以及指示参数取值为17且对应
Figure PCTCN2022130984-appb-000209
的取值范围为[-768，-513]。其中，
Figure PCTCN2022130984-appb-000210
的取值范围随着指示参数的递增以256为单位递增，这是由于pdcch-configSIB1占用8比特。
在上述实现过程中，通过指示参数的取值来指示SSB的类型，由于指示参数较之子载波偏移参数K SSB具有更大的取值范围，指示参数能够对更大取值范围的频域位置偏移
Figure PCTCN2022130984-appb-000211
进行指示，所以，在SSB的类型为NCD-SSB时，终端设备能够通过NCD-SSB对应的
Figure PCTCN2022130984-appb-000212
找到合适的CD-SSB。
在上述实施例的基础上，扩展参数参A可以采用主信息块MIB中的参数subCarrierSpacingCommon、dmrs-TypeA-Position、cellBarred、intraFreqReselection、Spare中的至少一种参数来表示。
如在扩展参数A占用1比特时，可以采用上述的其中一种参数来表示，在扩展参数占用2比特时，可以采用上述任意两种参数进行组合来表示。
通过MIB中的相关参数来表示扩展参数A，这样可以不用额外扩充参数来表示，更简单。
其中，MIB中的参数subCarrierSpacingCommon用于表示初始接入的子载波间隔，占用1比特。若用参数subCarrierSpacingCommon来表示扩展参数A，终端设备解析到该参数中的取值后，可确定扩展参数A的取值，然后联合子载波偏移参数K SSB的取值来共同确定指示参数的取值。这种情况下，终端设备默认系统信息块SIB1、其他系统信息OSI、消息msg2、msg4的子载波间隔与所述SSB相同，这样终端设备可以从其他信息中获取子载波间隔，而在解析到该参数后，可以获得扩展参数A的取值。
MIB中的参数dmrs-TypeA-Position用于表示第一个PDSCH DMRS在时隙中的符号位置，占用1比特。若用参数dmrs-TypeA-Position来表示扩展参数A，终端设备解析到该参数的取值后，可确定扩展参数A的取值，然后联合子载波偏移参数K SSB的取值来共同确定指示参数的取值。此时，基站可将SSB中的PBCH信道内的DMRS固定，即固定为在第二个符号位置pos2或第三个符号位置pos3，也就是说，终端设备默认PBCH的DMRS的位置为第二个符号位置pos2或第三个符号位置pos3。
MIB中的参数cellBarred用于指示是否允许中的终端设备驻留在该小区内，占用1比特。若用该参数cellBarred来表示扩展参数A，终端设备解析到该参数的取值后，可确定扩展参数A的取值，然后联合子载波偏移参数K SSB的取值来共同确定指示参数的取值。终端设备在确 定SSB的类型为NCD-SSB的情况下默认小区禁止接入，在确定SSB的类型为CD-SSB的情况下默认小区允许接入。
MIB中的参数intraFreqReselection用于控制对同频小区的小区重选，占用1比特。若用该参数intraFreqReselection来表示扩展参数A，终端设备解析到该参数的取值后，可确定扩展参数A的取值，然后联合子载波偏移参数K SSB的取值来共同确定指示参数的取值。终端设备在确定SSB的类型为NCD-SSB的情况下默认禁止同频重选，在确定SSB的类型为CD-SSB的情况下默认允许同频重选。
MIB中的参数Spare为备用参数，占用1比特。若用该参数Spare来表示扩展参数A，终端设备解析到该参数的取值后，可确定扩展参数A的取值，然后联合子载波偏移参数K SSB的取值来共同确定指示参数的取值。
该实施例中的内容与网络侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例8：
本申请实施例所涉及的一些概念如下：
每个全球同步信道编号(Global Synchronization Channel Number，GSCN)与Synch raster中的一个频域位置对应，请参照表9，表9示出了每个GSCN与频域位置的对应关系。可以看出，根据表9中的第三列，可以计算出不同频域位置对应的GSCN。
表9 每个GSCN与频域位置的对应关系
Figure PCTCN2022130984-appb-000213
SSB可以分为CD-SSB和NCD-SSB，其中，CD-SSB主要用于小区的初始接入，其包含了接入小区的系统信息块1(System Information Block 1，SIB1)信息；而NCD-SSB主要用于除小区的初始接入之外的其他情形，例如：测量等。运营商在部署SSB的时候，一般会将NCD-SSB和CD-SSB一同部署在Synch raster上。因此，终端设备在Synch raster上搜索SSB的时候，存在一定概率搜索到的SSB为NCD-SSB，而由于NCD-SSB中不包含接入目标小区的SIB1信息，因此终端设备需要通过NCD-SSB找到目标CD-SSB。
SSB包括主信息块(Master Information Block，MIB)和物理广播信道(Physical Broadcast Channel，PBCH)载荷(payload)。
MIB通过PBCH传输，包括系统帧号(system Frame Number)、子载波公共间隔(sub Carrier Spacing Commo)、子载波偏移参数(ssb-Subcarrier Offset)、dmrs-TypeA位置(dmrs-TypeA-Position)、物理下行控制信道(Physical Downlink Control Channel，PDCCH)的系统信息块1的配置参数(pdcch-Config SIB1)等参数。
其中，ssb-Subcarrier Offset表示SSB与CORESET#0之间资源粒子等级(Resource Element-level，RE-level)的偏移(offset)，可以用参数K SSB表示。根据配置的不同，当终端设备解调出的参数K SSB大于等于第一数值且小于第二数值时，可以表示该SSB为NCD-SSB，即不能用于小区的初始接入。此时，终端设备可以根据MIB中pdcch-config SIB1中的控制资源集合0(Control Resource Set Zero)和搜索空间0(Search Space Zero)两个参数确定该SSB(NCD-SSB)与目标SSB(CD-SSB)之间GSCN的偏移量
Figure PCTCN2022130984-appb-000214
以表6为例，表6示出了一种GSCN偏移关系，当终端设备解调出的参数K SSB为一个大于等于12且小于14的数时，可以表示该SSB为NCD-SSB。举例来说，当参数K SSB配置为 12时，control Resource Set Zero配置为0000且search Space Zero配置为0001时(此时，16×controlResourceSetZero+searchSpaceZero配置为1)，可以确定目标SSB(CD-SSB)与该SSB(NCD-SSB)之间GSCN的偏移量
Figure PCTCN2022130984-appb-000215
表6 一种GSCN偏移关系
Figure PCTCN2022130984-appb-000216
而PBCH payload主要在物理层形成，占用8个比特，用于表示系统帧号、半帧指示、候选SSB索引等。
小区，一般是指一个网络设备的信号所能覆盖的范围。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(GlobalSystem of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long TermEvolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统或5G系统等。
请参照图8，图8为本申请实施例提供的一种通信系统的结构框图，该通信系统100可以包括网络设备101与终端设备102，其中，网络设备101与终端设备102通信连接。
具体的，网络设备101可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。可以理解的是，在不同的通信系统中，本申请实施例提供的网络设备101可以有不同的形态。
作为一种实施方式，该网络设备101可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器；作为另一种实施方式，该网络设备101可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络等中的网络侧设备。
该终端设备102可以是位于网络设备101覆盖范围内的设备。与网络设备101类似，可以理解的是，在不同的使用场景中，本申请实施例提供的终端设备102也可以有不同的形态。举例来说，终端设备102可以为具有无线通信功能的手持设备、车载设备、可穿戴设备、5G网络中的终端设备等。
本申请实施对网络设备101与终端设备102之间的通信方式不作具体的限定。作为一种实施方式，网络设备101与终端设备102之间可以采用有线通信的方式，例如：网络设备101与终端设备102之间采用数字用户线路(Digital Subscriber Line，DSL)、数字电缆、道接电缆等连接；作为另一种实施方式，网络设备101与终端设备102之间可以采用无线通信的方式，例如：通过蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、物联网(Internet of Things，IoT)等连接。
本申请实施例对该通信系统100中的网络设备101的数量以及终端设备102的数量均不作具体的限定。作为一种实施方式，网络设备101的数量可以为一个或者多个；作为另一种实施方式，终端设备102的数量也可以为一个或者多个。
当网络设备101的数量为一个时，该通信系统100可以包括一个或者多个终端设备102在该网络设备102的覆盖范围之内；而当网络设备101的数量为多个时，位于每个网络设备101覆盖范围内的终端设备102也可以为一个或者多个，且多个网络设备101覆盖范围内的终端设备102可能存在重叠，即某一个终端设备102可能同时位于多个网络设备102的覆盖范围之内。
进一步的，本申请实施例提供的通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作具体的介绍。
基于上述通信系统100，本申请实施例提供一种应用于终端设备102的小区接入方法以及一种应用于网络设备101的小区广播方法。下面将依次对上述两种方法进行详细的介绍。
首先，介绍本申请实施例提供的应用于终端设备102的小区接入方法.请参照图9，图9为本申请实施例提供的一种小区接入方法的流程图，该小区接入方法可以包括如下内容：
步骤S201：在频段内搜索到SSB时，根据搜索到的SSB确定是否尝试发起小区接入。
具体的，终端设备开机上电后，需要接入小区中，因此，终端设备可以按照一定的顺序在频段内依次搜索各个频域位置，以接收该频域位置对应的SSB。当终端设备在频段内搜索到SSB时，可以根据上述SSB确定是否尝试接入小区。
其中，终端设备搜索到SSB后，可以对该SSB进行解析。在解析的过程中，可以关注参数K SSB，通过这一参数可以判断出SSB是否为CD-SSB或者是否为NCD-SSB。
可以理解的是，当判断SSB为CD-SSB时，终端设备可以直接尝试接入小区；而当判断SSB为CD-SSB时，终端设备可以基于NCD-SSB以及参数K SSB找到合适的CD-SSB并尝试接入小区。
需要说明的是，在本申请实施例中，频段的最小频率值不小于52.6GHz，且SSB与对应type0-PDCCH的子载波间隔不同。其中，参数K SSB的取值可以根据SSB的子载波间隔与对应的type0-PDCCH的子载波间隔的差异配置。换句话说，SSB的子载波间隔以及type0-PDCCH的子载波间隔的不同，会导致参数K SSB的不同。
举例来说，当SSB的子载波间隔为480kHz而对应的type0-PDCCH的子载波间隔为120kHz时，可以将参数K SSB配置为：当K SSB取值[0，2]时，SSB为CD-SSB；当K SSB取值[3，8]时，SSB为NCD-SSB。
可以理解的是，在一些实施例中，SSB的子载波间隔与type0-PDCCH的子载波间隔相等，但在本申请实施例中，SSB的子载波间隔以及CORESET#0所在PDCCH的子载波间隔不相等。
在上述方案中，当搜索到的SSB为CD-SSB时，可以直接尝试接入小区；当搜索到的SSB为NCD-SSB时，可以基于根据SSB的子载波间隔与CORESET#0所在PDCCH的子载波间隔之间的差异确定的参数K SSB找到合适的CD-SSB，并尝试接入小区。因此，在高于52.6GHz的频段中，当SSB的子载波间隔与CORESET#0所在PDCCH的子载波间隔不相同时，终端设备可以找到合适的CD-SSB，从而减少了接入小区的延迟。
进一步的，上述根据搜索到的SSB确定是否尝试发起小区接入的步骤具体可以包括如下内容：
当参数K SSB的取值落入[0，p 0]时，确定SSB为CD-SSB，解调CD-SSB以尝试发起小区接入。
当参数K SSB的取值落入[p 0+1，p 0+2M]时，确定SSB为NCD-SSB，根据NCD-SSB确定目标CD-SSB，解调目标CD-SSB以尝试发起小区接入。
具体的，由上述实施例可以得知，参数K SSB的取值可以根据SSB的子载波间隔与对应的type0-PDCCH的子载波间隔的差异配置。作为一种实施方式，可以将参数K SSB配置为：当K SSB取值[0，p 0]时，SSB为CD-SSB，终端设备可以直接尝试接入小区；当K SSB取值[p 0+1，p 0+ 2M]时，SSB为NCD-SSB，终端设备可以基于NCD-SSB以及参数K SSB找到合适的CD-SSB并尝试接入小区。
需要说明是，p 0及M均为正整数，且p 0的取值同样可以根据SSB的子载波间隔与对应的type0-PDCCH的子载波间隔的差异确定；同时，频段内同步栅格的数量取值落入(256×M-1，256×M。
上述方案中，当参数K SSB取值落入[0，p 0]时，可以直接基于搜索到的SSB尝试接入小区；当参数K SSB取值落入[p 0+1，p 0+2M]时，可以基于参数K SSB找到合适的CD-SSB并尝试接入小区。因此，在高于52.6GHz的频段中，当SSB的子载波间隔与CORESET#0所在PDCCH的子载波间隔不相同时，终端设备可以找到合适的CD-SSB，从而减少了接入小区的延迟。
进一步的，上述根据NCD-SSB确定目标CD-SSB的步骤具体可以包括如下内容：
根据NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB以及目标CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000217
确定目标CD-SSB的频域位置GSCN CD-SSB。
具体的，当参数K SSB取值落入[p 0+1，p 0+2M]时，可以基于参数K SSB找到合适的CD-SSB并尝试接入小区。其中，终端设备可以根据搜索到的NCD-SSB中的参数K SSB以及配置系统信息块1的参数PDCCH-configSIB1这两个参数查找NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB，然后根据上述GSCN NCD-SSB以及目标CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000218
确定目标CD-SSB的频域位置GSCN CD-SSB。
作为一种实施方式，可以将NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB与目标CD-SSB与NCD-SSB所在同步栅格的频域位置偏移
Figure PCTCN2022130984-appb-000219
相加得到目标CD-SSB的频域位置GSCN CD-SSB。即：
Figure PCTCN2022130984-appb-000220
需要说明的是，当参数K SSB＝p 0+1+i时，其所对应的
Figure PCTCN2022130984-appb-000221
的取值落入[256×i+1，256×i+1；而当参数K SSB＝p0+1+i+M时，其所对应的NGSCNoffset的取值落入-256×i+1，-256×i+1。其中，i为整数，并且，0≤i≤M-1。
在上述方案中，当参数K SSB取值落入[p 0+1，p 0+2M]时，可以基于NCD-SSB的频域位置GSCN NCD-SSB以及对应的频域位置偏移
Figure PCTCN2022130984-appb-000222
找到合适的CD-SSB对应的频域位置GSCN CD-SSB并尝试接入小区。因此，在高于52.6GHz的频段中，当SSB的子载波间隔与CORESET#0所在PDCCH的子载波间隔不相同时，终端设备可以找到合适的CD-SSB，从而减少了接入小区的延迟。
可以理解的是，当确定搜索到的为CD-SSB或者根据搜索到的NCD-SSB找到了对应的CD-SSB，但是由于信号强度等原因，终端设备并不一定能基于上述CD-SSB接入对应的小区。也就是说，终端设备可以先尝试接入该小区，如果接入失败，再继续搜索其他频域位置。
进一步的，作为一种实施方式，p取值可以为小于12/j的最大整数值，其中，j表征SSB与对应的type0-PDCCH的子载波间隔的比值。
下面举例对上述实施例提供的小区接入方法进行介绍。
举例一，以搜索到的SSB的子载波间隔为480kHz且对应的type0-PDCCH的子载波间隔为120kHz，请参照图10，图10为本申请实施例提供的SSB与type0-PDCCH的RE level offset示意图。
从图10中可以看出，SSB的子载波间隔是type0-PDCCH子载波间隔的4倍，由于这里的RE level offset是以SSB的子载波间隔为单位移动的，因此，在这种情况下，SSB与type0-PDCCH之间RE level的offset可取0、1或2，有p 0＝2。
此时，只需要使用参数K SSB中的2个比特表示，例如：最低的两位比特(LSB ofSubcarrier Offset)。这样，参数K SSB可以配置为：当K SSB取值[0，2]时，SSB为CD-SSB；当K SSB取值[3，8] 时，SSB为NCD-SSB。即，p 0＝2，M＝3。基于此，在参数K SSB占用比特数一定的情况下(例如占用4比特)，参数K SSB的取值可以根据SSB与type0-PDCCH所对应子载波间隔的组合以及同步栅格的数量进行灵活配置，以对SSB的类型以及NCD-SSB与
Figure PCTCN2022130984-appb-000223
之间的对应关系进行指示。
而当频段的最小频率值不小于52.6GHz时，在该频段内Synch raster数量将大于256，例如，对于频段范围52.6GHz-71GHz，由于该频段范围内频段内Synch raster数量大于256且不能超过665，因此，在M＝3时，可以在上述实施例的基础上，增加GSCN偏移量的取值范围至-768到768。
请参照表7，表7示出了一种GSCN偏移关系。当K SSB取值[3，8]时，SSB为NCD-SSB。当K SSB＝3时(即i＝0时)，对应的
Figure PCTCN2022130984-appb-000224
的取值落入[1，256]；当K SSB＝4时(即i＝1时)，对应的
Figure PCTCN2022130984-appb-000225
的取值落入[257，512]；当K SSB＝5时(即i＝2时)，对应的
Figure PCTCN2022130984-appb-000226
的取值落入[513，768]；当K SSB＝6时(即i＝0时)，对应的
Figure PCTCN2022130984-appb-000227
的取值落入[-256，-1]；当K SSB＝7时(即i＝1时)，对应的
Figure PCTCN2022130984-appb-000228
的取值落入[-512，-257]；当K SSB＝8时(即i＝2时)，对应的
Figure PCTCN2022130984-appb-000229
的取值落入[-768，-513]。
表7 一种GSCN偏移关系
Figure PCTCN2022130984-appb-000230
举例二，以搜索到的SSB的子载波间隔为960kHz且对应的type0-PDCCH的子载波间隔为120kHz，请参照图11，图11为本申请实施例提供的SSB与type0-PDCCH的RE level offset示意图。
从图11中可以看出，SSB的子载波间隔是type0-PDCCH子载波间隔的8倍，同样的，由于这里的RE level offset是以SSB的子载波间隔为单位移动的，因此，在这种情况下，SSB与type0-PDCCH之间RE level的offset可取0或1，有p 0＝1。
此时，只需要使用参数K SSB中的1个比特表示，参数K SSB可以配置为：当K SSB取值[0，1]时，SSB为CD-SSB；当K SSB取值[2，7]时，SSB为NCD-SSB。即，p 0＝1，M＝3。基于此，在参数K SSB占用比特数一定的情况下(例如占用4比特)，参数K SSB的取值可以根据SSB与type0-PDCCH所对应子载波间隔的组合以及同步栅格的数量进行灵活配置，以对SSB的类型以及NCD-SSB与
Figure PCTCN2022130984-appb-000231
之间的对应关系进行指示。
同样的，当频段的最小频率值不小于52.6GHz时，在该频段内Synch raster数量将大于256，例如，对于频段范围52.6GHz-71GHz，由于该频段范围内频段内Synch raster数量大于256且不能超过665，因此，在M＝3时，可以在上述实施例的基础上，增加GSCN偏移量的取值范围至-768到768。
请参照表8，表8示出了一种GSCN偏移关系。当K SSB取值[2，7]时，SSB为NCD-SSB。当K SSB＝2时(即i＝0时)，对应的
Figure PCTCN2022130984-appb-000232
的取值落入[1，256]；当K SSB＝3时(即i＝1时)，对应的
Figure PCTCN2022130984-appb-000233
的取值落入[257，512]；当K SSB＝4时(即i＝2时)，对应的
Figure PCTCN2022130984-appb-000234
的取值落入[513，768]；当K SSB＝5时(即i＝0时)，对应的
Figure PCTCN2022130984-appb-000235
的取值落入[-256，-1]；当 K SSB＝6时(即i＝1时)，对应的
Figure PCTCN2022130984-appb-000236
的取值落入[-512，-257]；当K SSB＝7时(即i＝2时)，对应的
Figure PCTCN2022130984-appb-000237
的取值落入[-768，-513]。
表8 一种GSCN偏移关系
Figure PCTCN2022130984-appb-000238
举例三，以搜索到的SSB的子载波间隔为960kHz且对应的type0-PDCCH的子载波间隔为480kHz，请参照图12，图12为本申请实施例提供的SSB与type0-PDCCH的RE level offset示意图。
从图12中可以看出，SSB的子载波间隔是type0-PDCCH子载波间隔的2倍，同样的，由于这里的RE level offset是以SSB的子载波间隔为单位移动的，因此，在这种情况下，SSB与type0-PDCCH之间RE level的offset可取0、1、2、3、4或5，有M＝5。
此时，需要使用参数K SSB中的3个比特表示，这样，参数K SSB可以配置为：当K SSB取值[0，5]时，SSB为CD-SSB；当K SSB取值[6，1]时，SSB为NCD-SSB。即，p 0＝5，M＝3。基于此，在参数K SSB占用比特数一定的情况下(例如占用4比特)，参数K SSB的取值可以根据SSB与type0-PDCCH所对应子载波间隔的组合以及同步栅格的数量进行灵活配置，以对SSB的类型以及NCD-SSB与
Figure PCTCN2022130984-appb-000239
之间的对应关系进行指示。
同样的，当频段的最小频率值不小于52.6GHz时，在该频段内Synch raster数量将大于256，例如，对于频段范围52.6GHz-71GHz，由于该频段范围内频段内Synch raster数量大于256且不能超过665，在M＝3时，因此，可以在上述实施例的基础上，增加GSCN偏移量的取值范围至-768到768。
请参照表10，表10示出了一种GSCN偏移关系。当K SSB取值[6，11]时，SSB为NCD-SSB。当K SSB＝6时(即i＝0时)，对应的
Figure PCTCN2022130984-appb-000240
的取值落入[1，256]；当K SSB＝7时(即i＝1时)，对应的
Figure PCTCN2022130984-appb-000241
的取值落入[257，512]；当K SSB＝8时(即i＝2时)，对应的
Figure PCTCN2022130984-appb-000242
的取值落入[513，768]；当K SSB＝9时(即i＝0时)，对应的
Figure PCTCN2022130984-appb-000243
的取值落入[-256，-1]；当K SSB＝10时(即i＝1时)，对应的
Figure PCTCN2022130984-appb-000244
的取值落入[-512，-257]；当K SSB＝11时(即i＝2时)，对应的
Figure PCTCN2022130984-appb-000245
的取值落入[-768，-513]。
表10 一种GSCN偏移关系
Figure PCTCN2022130984-appb-000246
可以理解的是，上述SSB的子载波间隔以及type0-PDCCH的子载波间隔的具体数值均 为本申请实施例提供的示例，本申请实施例对此不作具体的限定，本领域技术人员可以在本方案提供的实施例的基础上，知晓其他数值情况的执行方法。
作为一种实施方式，SSB的子载波间隔以及type0-PDCCH的子载波间隔的具体数值可以为除120kHz、480kHz、960kHz之外的其他数值，本申请实施例对此不作具体的限定。
该实施例中的内容与网络侧的方法对应相同，所以相同的部分此处就不再赘述了。
实施例9：
所述扩展参数A采用主信息块MIB中的参数subCarrierSpacingCommon、dmrs-TypeA-Position、cellBarred、intraFreqReselection、Spare中的至少一种参数来表示；
当所述扩展参数A采用参数subCarrierSpacingCommon表示时，配置系统信息块SIB1、其他系统信息OSI、消息msg2、msg4的子载波间隔与所述SSB相同；
当所述扩展参数A采用参数dmrs-TypeA-Position表示时，配置PBCH信道中解调参考信号DMRS的位置为pos2或pos3；
当所述扩展参数A采用参数cellBarred表示时，配置在所述SSB的类型为CD-SSB的情况下小区允许接入，在所述SSB的类型为NCD-SSB的情况下小区禁止接入；
当所述扩展参数A采用参数intraFreqReselection表示时，配置在所述SSB的类型为CD-SSB的情况下允许同频重选，在所述SSB的类型为NCD-SSB的情况下禁止同频重选；
和/或，
所述子载波偏移参数K SSB所占用的比特数为4比特，所述扩展参数A所占用的比特数不小于1比特；
和/或，
所述频段的最小频率值不小于52.6GHz。
可以理解地，该实施例中针对扩展参数A的相关描述以及终端设备进行参数解析、小区接入的具体过程可参照上述实施例的相关描述，为描述的方便和简洁，在此不再重复描述。
在上述实现过程中，利用包括子载波偏移参数K SSB和扩展参数A的指示参数来指示SSB的类型，由于增加了扩展参数A，使得指示参数较之子载波偏移参数K SSB具有更大指示参数的取值范围，使得指示参数对应的频域位置偏移
Figure PCTCN2022130984-appb-000247
的取值范围也能增大，这样在同步栅格的数量配置增大时，子载波偏移参数K SSB的配置不受影响且频域位置偏移
Figure PCTCN2022130984-appb-000248
也能够被指示，从而对于终端设备来说，能够通过NCD-SSB找到合适的CD-SSB，缩短其接入小区的延迟。
虽然以上描述了本发明的具体实施方式，但是本领域的技术人员应当理解，这仅是举例说明，本发明的保护范围是由所附权利要求书限定的。本领域的技术人员在不背离本发明的原理和实质的前提下，可以对这些实施方式做出多种变更或修改，但这些变更和修改均落入本发明的保护范围。

Claims (22)

  1. 一种同步信号块的频域位置确定方法，其特征在于，包括：
    在频段内搜索到非小区定义同步信号块NCD-SSB时，确定所对应的频域位置偏移
    Figure PCTCN2022130984-appb-100001
    其中，所述
    Figure PCTCN2022130984-appb-100002
    表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，
    Figure PCTCN2022130984-appb-100003
    的取值落入[1，256×M]，M为不小于2的整数，并且，频段内所述同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段的最小频率值不小于52.6GHz；
    根据所述NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB和所述
    Figure PCTCN2022130984-appb-100004
    确定所述CD-SSB所在同步栅格的频域位置GSCN CD-SSB。
  2. 如权利要求1所述的频域位置确定方法，其特征在于，在频段内搜索到非小区定义同步信号块NCD-SSB之前，还包括：
    在频段内搜索到同步信号块SSB时，根据搜索到的所述SSB确定是否尝试发起小区接入，其中，所述SSB与对应类型0-物理下行控制信道type0-PDCCH的子载波间隔不同，所述SSB包括用于指示所述SSB的子载波偏移的子载波偏移参数K SSB，并且，所述子载波偏移参数K SSB的取值根据所述SSB的子载波间隔与对应的所述type0-PDCCH的子载波间隔的差异配置；
    根据搜索到的所述SSB确定是否尝试发起小区接入，包括：
    当所述子载波偏移参数K SSB的取值落入[0，p 0]时，确定所述SSB的类型为CD-SSB，解调所述CD-SSB以尝试发起小区接入，其中，p 0为正整数，并且，p 0的取值根据所述SSB的子载波间隔与对应的所述type0-PDCCH的子载波间隔的差异确定；
    当所述子载波偏移参数K SSB的取值落入[p 0+1，p 0+2M]时，确定所述SSB的类型为NCD-SSB。
  3. 如权利要求2所述的频域位置确定方法，其特征在于，在所述SSB的类型为NCD-SSB时，所述
    Figure PCTCN2022130984-appb-100005
    根据所述NCD-SSB对应的所述子载波偏移参数K SSB与物理下行控制信道-系统信息块1配置参数PDCCH-configSIB1确定；其中：
    当所述子载波偏移参数K SSB＝p 0+1+i时，所对应的
    Figure PCTCN2022130984-appb-100006
    的取值落入[256×i+1，256×i+1，其中，i为整数，并且，0≤i≤M-1；
    当所述子载波偏移参数K SSB＝p 0+1+i+M时，所对应的
    Figure PCTCN2022130984-appb-100007
    的取值落入[-256×(i+1)，-(256×i+1)]；
    和/或，
    p 0取值为小于12/j的最大整数值，其中，j表征所述SSB与对应所述type0-PDCCH的子载波间隔的比值。
  4. 如权利要求1所述的频域位置确定方法，其特征在于，在频段内搜索到非小区定义同步信号块NCD-SSB之前，还包括：
    在频段内搜索到同步信号块SSB时，根据搜索到的所述SSB确定是否尝试发起小区接入， 其中，所述SSB包括用于指示所述SSB的类型的指示参数，所述指示参数通过子载波偏移参数K SSB和扩展参数A拼接得到；
    所述根据搜索到的所述SSB确定是否尝试发起小区接入，包括：
    当所述指示参数的取值落入第一范围时，确定所述SSB的类型为CD-SSB，解调所述CD-SSB以尝试发起小区接入，其中，所述指示参数的取值表征所述SSB的子载波偏移；
    当所述指示参数的取值落入第二范围时，确定所述SSB的类型为NCD-SSB。
  5. 如权利要求4所述的频域位置确定方法，其特征在于，当所述SSB的类型为NCD-SSB且所述指示参数的取值为p1+i时，所对应的
    Figure PCTCN2022130984-appb-100008
    的取值落入[256×i+1，256×(i+1)]，其中，p 1是表征所述SSB的类型为NCD-SSB时所述指示参数的最小取值，i是整数，并且，0≤i≤M-1；
    当所述SSB的类型为NCD-SSB且所述指示参数的取值为p 1+i+M时，所对应的
    Figure PCTCN2022130984-appb-100009
    的取值落入[-256×(i+1)，-(256×i+1)]。
  6. 如权利要求1所述的频域位置确定方法，其特征在于，在频段内搜索到非小区定义同步信号块NCD-SSB之前，还包括：
    在频段内搜索到同步信号块SSB时，根据搜索到的所述SSB确定是否尝试发起小区接入，其中，所述SSB包括用于指示所述SSB的类型的指示参数，所述指示参数通过子载波偏移参数K SSB和扩展参数A组合得到；
    所述根据搜索到的所述SSB确定是否尝试发起小区接入，包括：
    当所述扩展参数A的取值为空或者落入第三范围，并且所述子载波偏移参数K SSB的取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的取值落入第四范围时，确定所述SSB的类型为CD-SSB，解调所述CD-SSB，其中，所述子载波偏移参数K SSB的取值表征所述SSB的子载波偏移；
    当所述扩展参数A的取值落入第五范围，并且所述子载波偏移参数K SSB的取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的取值落入第六范围时，确定所述SSB的类型为NCD-SSB。
  7. 如权利要求6所述的方法，其特征在于，当所述SSB的类型为NCD-SSB且所述指示参数的取值为p 2+i时，所对应的
    Figure PCTCN2022130984-appb-100010
    的取值落入[256×i+1，256×(i+1)]，其中，p 2是表征所述SSB的类型为NCD-SSB时所述子载波偏移参数K SSB的最小取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的最小取值，i是整数，并且，0≤i≤M-1；
    当所述SSB的类型为NCD-SSB且所述指示参数的取值为p 2+i+M时，所对应的
    Figure PCTCN2022130984-appb-100011
    的取值落入[-256×(i+1)，-(256×i+1)]。
  8. 如权利要求1所述的频域位置确定方法，其特征在于，
    Figure PCTCN2022130984-appb-100012
    根据以下公式确定：
    Figure PCTCN2022130984-appb-100013
    其中，S的取值落入[1，M]，所述NCD-SSB中物理下行控制信道-系统信息块1配置参数PDCCH-configSIB1包括控制资源集合零controlResourceSetZero与搜索空间零 searchSpaceZero。
  9. 如权利要求8所述的频域位置确定方法，其特征在于，M与S的值为3。
  10. 一种小区广播方法，其特征在于，包括：
    在频段内广播同步信号块SSB；
    当所述SSB为非小区定义NCD-SSB时，所对应的频域位置偏移
    Figure PCTCN2022130984-appb-100014
    的取值落入[1，256×M]，其中，所述
    Figure PCTCN2022130984-appb-100015
    表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，M为不小于2的整数，并且，频段内所述同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段的最小频率值不小于52.6GHz。
  11. 如权利要求10所述的小区广播方法，其特征在于，所述SSB与对应类型0-物理下行控制信道type0-PDCCH的子载波间隔不同，所述SSB包括用于指示所述SSB的子载波偏移的子载波偏移参数K SSB，并且，所述子载波偏移参数K SSB的取值根据所述SSB的子载波间隔与对应的所述type0-PDCCH的子载波间隔的差异配置；
    当所述子载波偏移参数K SSB的取值落入[0，p 0]时，表征所述SSB的类型为CD-SSB，其中，p 0为正整数，并且，p 0的取值根据所述SSB的子载波间隔与对应的所述type0-PDCCH的子载波间隔的差异确定；
    当所述子载波偏移参数K SSB的取值落入[p 0+1，p 0+2M]时，表征所述SSB的类型为NCD-SSB。
  12. 如权利要求11所述的小区广播方法，其特征在于，在所述SSB的类型为NCD-SSB时，所述
    Figure PCTCN2022130984-appb-100016
    根据所述NCD-SSB对应的所述子载波偏移参数K SSB与物理下行控制信道-系统信息块1配置参数PDCCH-configSIB1确定；其中：
    当所述子载波偏移参数K SSB＝p 0+1+i时，所对应的
    Figure PCTCN2022130984-appb-100017
    的取值落入[256×i+1，256×i+1，其中，i为整数，并且，0≤i≤M-1；
    当所述子载波偏移参数K SSB＝p 0+1+i+M时，所对应的
    Figure PCTCN2022130984-appb-100018
    的取值落入[-256×(i+1)，-(256×i+1)]；
    和/或，
    p 0取值为小于12/j的最大整数值，其中，j表征所述SSB与对应所述type0-PDCCH的子载波间隔的比值。
  13. 如权利要求10所述的小区广播方法，其特征在于，所述SSB包括用于指示所述SSB的类型的指示参数，所述指示参数通过子载波偏移参数K SSB和扩展参数A拼接得到；
    当所述指示参数的取值落入第一范围时，确定所述SSB的类型为CD-SSB，解调所述CD-SSB以尝试发起小区接入，其中，所述指示参数的取值表征所述SSB的子载波偏移；
    当所述指示参数的取值落入第二范围时，确定所述SSB的类型为NCD-SSB。
  14. 如权利要求13所述的小区广播方法，其特征在于，当所述SSB的类型为NCD-SSB 且所述指示参数的取值为p 1+i时，所对应的
    Figure PCTCN2022130984-appb-100019
    的取值落入[256×i+1，256×(i+1)]，其中，p 1是表征所述SSB的类型为NCD-SSB时所述指示参数的最小取值，i是整数，并且，0≤i≤M-1；
    当所述SSB的类型为NCD-SSB且所述指示参数的取值为p 1+i+M时，所对应的
    Figure PCTCN2022130984-appb-100020
    的取值落入[-256×(i+1)，-(256×i+1)]。
  15. 如权利要求10所述的小区广播方法，其特征在于，所述SSB包括用于指示所述SSB的类型的指示参数，所述指示参数通过子载波偏移参数K SSB和扩展参数A组合得到；
    当所述扩展参数A的取值为空或者落入第三范围，并且所述子载波偏移参数K SSB的取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的取值落入第四范围时，确定所述SSB的类型为CD-SSB，解调所述CD-SSB，其中，所述子载波偏移参数K SSB的取值表征所述SSB的子载波偏移；
    当所述扩展参数A的取值落入第五范围，并且所述子载波偏移参数K SSB的取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的取值落入第六范围时，确定所述SSB的类型为NCD-SSB。
  16. 如权利要求15所述的小区广播方法，其特征在于，当所述SSB的类型为NCD-SSB且所述指示参数的取值为p 2+i时，所对应的
    Figure PCTCN2022130984-appb-100021
    的取值落入[256×i+1，256×(i+1)]，其中，p 2是表征所述SSB的类型为NCD-SSB时所述子载波偏移参数K SSB的最小取值或者所述子载波偏移参数K SSB与所述扩展参数A拼接后的最小取值，i是整数，并且，0≤i≤M-1；
    当所述SSB的类型为NCD-SSB且所述指示参数的取值为p 2+i+M时，所对应的
    Figure PCTCN2022130984-appb-100022
    的取值落入[-256×(i+1)，-(256×i+1)]。
  17. 如权利要求10所述的小区广播方法，其特征在于，
    Figure PCTCN2022130984-appb-100023
    与所述NCD-SSB中物理下行控制信道-系统信息块1配置参数PDCCH-configSIB1之间的对应关系满足：
    Figure PCTCN2022130984-appb-100024
    其中，所述NCD-SSB中物理下行控制信道-系统信息块1配置参数PDCCH-configSIB1包括控制资源集合零controlResourceSetZero与搜索空间零searchSpaceZero，S的取值落入[1，M]。
  18. 如权利要求17所述的小区广播方法，其特征在于，M与S的值为3。
  19. 一种同步信号块的频域位置确定系统，其特征在于，包括：
    第一确定模块，用于在频段内搜索到非小区定义同步信号块NCD-SSB时，确定所对应的频域位置偏移
    Figure PCTCN2022130984-appb-100025
    其中，所述
    Figure PCTCN2022130984-appb-100026
    表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，
    Figure PCTCN2022130984-appb-100027
    的取值落入[1，256×M]，M为不小于2的整数，并且，频段内所述同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段 的最小频率值不小于52.6GHz；
    第二确定模块，用于根据所述NCD-SSB所在同步栅格的频域位置GSCN NCD-SSB和所述
    Figure PCTCN2022130984-appb-100028
    确定所述CD-SSB所在同步栅格的频域位置GSCN CD-SSB。
  20. 一种小区广播系统，其特征在于，包括：
    广播模块，用于在频段内广播同步信号块SSB；
    当所述SSB为非小区定义NCD-SSB时，所对应的频域位置偏移
    Figure PCTCN2022130984-appb-100029
    的取值落入[1，256×M]，其中，所述
    Figure PCTCN2022130984-appb-100030
    表征小区定义同步信号块CD-SSB与所述NCD-SSB所在同步栅格的频域位置偏移，M为不小于2的整数，并且，频段内所述同步栅格的数量取值落入(256×(M-1)，256×M]，所述频段的最小频率值不小于52.6GHz。
  21. 一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其特征在于，所述处理器执行所述计算机程序时实现如权利要求1-9中任一项所述的同步信号块的频域位置确定方法，或者如权利要求10-18中任一项所述的小区广播方法。
  22. 一种非暂态计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-9中任一项所述的同步信号块的频域位置确定方法，或者如权利要求10-18中任一项所述的小区广播方法。
PCT/CN2022/130984 2021-11-09 2022-11-09 同步信号块的频域位置确定方法及系统 WO2023083229A1 (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN202111319831.1 2021-11-09
CN202111319831.1A CN114126030B (zh) 2021-11-09 2021-11-09 同步信号块的频域位置确定方法及系统
CN202111466374.9 2021-12-03
CN202111466374.9A CN114125998B (zh) 2021-12-03 2021-12-03 小区接入方法、信息广播方法、装置及电子设备
CN202111475189.6 2021-12-03
CN202111475189.6A CN114125999B (zh) 2021-12-03 2021-12-03 一种小区接入方法及装置、小区广播方法及装置

Publications (1)

Publication Number Publication Date
WO2023083229A1 true WO2023083229A1 (zh) 2023-05-19

Family

ID=86335112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/130984 WO2023083229A1 (zh) 2021-11-09 2022-11-09 同步信号块的频域位置确定方法及系统

Country Status (1)

Country Link
WO (1) WO2023083229A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111083777A (zh) * 2019-12-10 2020-04-28 重庆邮电大学 5g系统中基于共轭对称性的pss定时同步方法及系统
WO2021062584A1 (zh) * 2019-09-30 2021-04-08 Oppo广东移动通信有限公司 无线通信方法和终端设备
US20210144720A1 (en) * 2019-11-07 2021-05-13 Comcast Cable Communications, Llc Transmission repetition for wireless communication
CN113709864A (zh) * 2020-05-20 2021-11-26 华为技术有限公司 参数确定方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021062584A1 (zh) * 2019-09-30 2021-04-08 Oppo广东移动通信有限公司 无线通信方法和终端设备
US20210144720A1 (en) * 2019-11-07 2021-05-13 Comcast Cable Communications, Llc Transmission repetition for wireless communication
CN111083777A (zh) * 2019-12-10 2020-04-28 重庆邮电大学 5g系统中基于共轭对称性的pss定时同步方法及系统
CN113709864A (zh) * 2020-05-20 2021-11-26 华为技术有限公司 参数确定方法及装置

Similar Documents

Publication Publication Date Title
WO2021027694A1 (zh) Ssb候选位置索引指示、接收方法及装置、存储介质、基站、用户设备
JP7198812B2 (ja) ランダムアクセス方法及び装置
US20230292267A1 (en) Method for determining synchronization signal block, terminal device, and network device
KR102398336B1 (ko) 신호를 전송하는 방법, 단말 장비 및 네트워크 장비
JP2020529756A (ja) ランダムアクセス方法および装置
KR102602297B1 (ko) 시스템 정보 전송 방법, 기지국 및 단말기
CN110932828B (zh) 消息接收方法、消息发送方法、终端设备和网络侧设备
EP3582565B1 (en) Data transmission method, and computer-readable storage medium
US11026158B2 (en) Information transmission method and device
JP2021503791A (ja) 検出ウィンドウ指示方法及び装置
US20190349242A1 (en) Communication Method, Communications Apparatus, And Communications System
RU2727798C1 (ru) Способ передачи сигналов, оконечное устройство и сетевое устройство
CN114125999B (zh) 一种小区接入方法及装置、小区广播方法及装置
US20230362842A1 (en) Wireless communication method, network device and terminal device
US11910336B2 (en) Signal transmission method and related device
CN114868456A (zh) 一种无线资源管理测量方法、电子设备及存储介质
RU2742601C1 (ru) Способ осуществления беспроводной связи, сетевое устройство и терминальное устройство
JP2022532351A (ja) Ｄ２ｄシステムにおける通信方法及び端末装置、ネットワーク装置
CN114125998B (zh) 小区接入方法、信息广播方法、装置及电子设备
AU2019290737B2 (en) Bandwidth part processing method, terminal device and network device
EP4007377A1 (en) Signal monitoring method, signal sending method, terminal device and network device
WO2023083229A1 (zh) 同步信号块的频域位置确定方法及系统
WO2023020297A1 (zh) 中继选择方法和装置
JP2019530301A (ja) 信号処理方法、デバイス及びシステム
EP4135437A1 (en) Method and device for receiving system information

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22892023

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022892023

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2022892023

Country of ref document: EP

Effective date: 20240610