WO2021203435A1 - 系统信息接收方法以及装置 - Google Patents

系统信息接收方法以及装置 Download PDF

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Publication number
WO2021203435A1
WO2021203435A1 PCT/CN2020/084301 CN2020084301W WO2021203435A1 WO 2021203435 A1 WO2021203435 A1 WO 2021203435A1 CN 2020084301 W CN2020084301 W CN 2020084301W WO 2021203435 A1 WO2021203435 A1 WO 2021203435A1
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WO
WIPO (PCT)
Prior art keywords
synchronization signal
parameter
signal block
ssb
bit
Prior art date
Application number
PCT/CN2020/084301
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English (en)
French (fr)
Inventor
蒋琴艳
贾美艺
Original Assignee
富士通株式会社
蒋琴艳
贾美艺
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
Application filed by 富士通株式会社, 蒋琴艳, 贾美艺 filed Critical 富士通株式会社
Priority to PCT/CN2020/084301 priority Critical patent/WO2021203435A1/zh
Priority to KR1020227035223A priority patent/KR20220155325A/ko
Priority to CN202080099046.7A priority patent/CN115380587A/zh
Priority to JP2022560429A priority patent/JP2023520704A/ja
Priority to EP20929850.4A priority patent/EP4135437A4/en
Publication of WO2021203435A1 publication Critical patent/WO2021203435A1/zh
Priority to US17/957,276 priority patent/US20230071890A1/en

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    • 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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the embodiments of the application relate to the field of communication technology.
  • the system information includes the master information block (Master Information Block, MIB) and the system information block (System Information Blocks, SIBs), and the system information is divided into the minimum system information (Minimum SI). ) And other system information (Other SI).
  • the Minimum SI includes the basic information required by the terminal device for initial access and the information required to obtain the Other SI.
  • Minimum SI can be divided into two parts: MIB and SIB1.
  • MIB includes cell bar status (cell bar status) information and core physical layer information of the cell required to receive further system information, such as CORESET (such as CORESET#0) configuration, which can be used for monitoring or receiving For scheduling PDCCH (Physical Downlink Control Channel) carrying SIB1 PDSCH (Physical Downlink Shared Channel).
  • CORESET Physical Downlink Control Channel
  • SIB1 PDSCH Physical Downlink Shared Channel
  • SIB1 includes scheduling information of other SIBs and information required for initial access. SIB1 is also known as remaining minimum system information (RMSI), which is periodically broadcast on the Downlink Shared Channel (DL-SCH) or sent to the radio resource control connection state in a dedicated manner on the DL-SCH ( RRC_CONNECTED state) terminal equipment.
  • RMSI remaining minimum system information
  • the terminal device is in the radio resource control idle state (RRC_IDLE state) or in the radio resource control inactive state (RRC_INACTIVE state), or the terminal device is in the RRC_CONNECTED state but the timer T311 is running, or the network device indicates When the terminal device reports the cell global identity (CGI), the terminal device needs to receive the MIB first, and then receive the periodically broadcast SIB1 according to the MIB.
  • RRC_IDLE state radio resource control idle state
  • RRC_INACTIVE state radio resource control inactive state
  • the terminal device is in the RRC_CONNECTED state but the timer T311 is running, or the network device indicates
  • the terminal device reports the cell global identity (CGI)
  • the terminal device needs to receive the MIB first, and then receive the periodically broadcast SIB1 according to the MIB.
  • the MIB is sent on the Physical Broadcast Channel (PBCH), and the PBCH is periodically broadcast as a part of the synchronization signal block (SSB).
  • PBCH Physical Broadcast Channel
  • the PBCH may indicate that the SSB where it is located has no associated SIB1, that is, the terminal device cannot receive SIB1 according to the MIB carried by the PBCH.
  • the PBCH may also indicate the frequency domain position of the SSB associated with SIB1, or indicate that the terminal device may assume the frequency range of the SSB not associated with SIB1.
  • NR-U NR operation on unlicensed spectrum/band
  • NR-U shared spectrum/band
  • NR-U introduces more candidate SSB (candidate SSB) positions (for example, characterized by candidate SSB index).
  • the SSBs sent at different candidate SSB locations in one cycle may be QCLed (QCLed).
  • the terminal device can determine the QCL relationship between the SSBs according to a parameter, and then receive the SIB1 according to the QCL relationship between the SSBs.
  • the value of this parameter needs to be indicated through the PBCH, but there is currently no specific indication method.
  • the device will not be able to use the method in Rel-15 to receive system information (Minimum SI).
  • embodiments of the present application provide a method and device for receiving system information, aiming at unlicensed frequency bands or shared frequency bands, supporting the reuse of bits in the indication field of the PBCH payload defined in Rel-15 NR While indicating the value of the above parameters, it is possible to minimize or avoid the impact on other necessary or important information that needs to be indicated by the PBCH, so that the system can operate normally and efficiently.
  • a method for receiving system information wherein the method includes:
  • the terminal device receives the synchronization signal block (SSB) sent by the network device;
  • SSB synchronization signal block
  • At least one bit in the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block is used to indicate the QCL relationship between SSBs:
  • a system information receiving device which is configured in a terminal device, wherein the device includes:
  • a receiving unit which receives a synchronization signal block (SSB) sent by a network device;
  • SSB synchronization signal block
  • At least one bit in the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block is used to indicate the QCL relationship between SSBs:
  • a method for receiving system information wherein the method includes:
  • the terminal device receives the first synchronization signal block (SSB) sent by the network device;
  • the first synchronization signal block is sent in an unlicensed or shared frequency band, and/or the load of the physical broadcast channel included in the first synchronization signal block Ssb-SubcarrierOffset in and/or
  • the first bit in is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter;
  • the terminal device determines the first parameter according to the first synchronization signal block; the first parameter is used by the terminal device to determine the position of the CORESET used to monitor or receive the PDCCH, and the PDCCH is used to schedule the bearer
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • the terminal device receives the SIB1 or the second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • a system information receiving device which is configured in a terminal device, wherein the device includes:
  • a first receiving unit which receives a first synchronization signal block (SSB) sent by a network device, the first synchronization signal block being sent in an unlicensed or shared frequency band, and/or the physical content contained in the first synchronization signal block
  • SSB synchronization signal block
  • the ssb-SubcarrierOffset in the load of the broadcast channel is neutralized and/or
  • the first bit in is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter;
  • a first determining unit which determines a first parameter according to the first synchronization signal block, and the first parameter is used by the terminal device to determine the position of the CORESET used to monitor or receive the PDCCH, and the PDCCH is used to schedule the bearer
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • a second receiving unit which receives SIB1 or a second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • a method for receiving system information wherein the method includes:
  • the terminal device receives the first synchronization signal block (SSB) sent by the network device;
  • SSB synchronization signal block
  • the terminal device determines the first parameter according to the first factor and the second parameter, and the first parameter is used for the terminal device to determine the position of the CORESET for monitoring or receiving the PDCCH, and the PDCCH is used for scheduling the bearer
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • the terminal device receives the SIB1 or the second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • a system information receiving device which is configured in a terminal device, wherein the device includes:
  • a first receiving unit which receives a first synchronization signal block (SSB) sent by a network device;
  • SSB synchronization signal block
  • a first determining unit which determines a second parameter according to the first synchronization signal block
  • a second determining unit which determines a first parameter according to the first factor and the second parameter, where the first parameter is used by the terminal device to determine the position of the CORESET for monitoring or receiving the PDCCH, and the PDCCH is used for scheduling Carrying the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • a second receiving unit which receives SIB1 or a second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • the bits in the indication field in the PBCH payload defined in Rel-15 NR support multiplexing indicate the above-mentioned parameters (referred to as the third parameter, for example, The value of Q) while reducing or avoiding as much as possible the impact on other necessary or important information that needs PBCH indication, so that the system can operate normally and efficiently.
  • Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a method for receiving system information according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of the mapping relationship between the resource unit of the SSB and the syncraster where it is located;
  • Fig. 4 is an example diagram of channel division
  • Fig. 5 is an example diagram of the frequency position of sync raster in Rel-15 NR and the corresponding GSCN;
  • Fig. 6 is an example diagram of the frequency position of sync raster and the corresponding GSCN in NR-U;
  • FIG. 7 is a schematic diagram of a method for receiving system information according to an embodiment of the present application.
  • Fig. 8 is a diagram showing an example of the offset between the SSB and CRB grid
  • FIG. 9 is another schematic diagram of a method for receiving system information according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a system information receiving device according to an embodiment of the present application.
  • FIG. 11 is another schematic diagram of the system information receiving apparatus according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a system information receiving device according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a method for sending system information according to an embodiment of the present application.
  • FIG. 14 is a schematic diagram of a system information sending device according to an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • Figure 17 is a schematic diagram of system information acquisition
  • Figure 18 is a schematic diagram of the relationship between the layers of the user plane protocol stack
  • Figure 19 is a schematic diagram of the relationship between the layers of the control plane protocol stack
  • FIG. 20 is a schematic diagram of frequency domain resources
  • FIG. 21 is a schematic diagram of the relationship between subcarrier spacing, bandwidth, and the number of resource blocks (RB);
  • Figure 22 is a schematic diagram of time domain resources
  • FIG. 23 is a schematic diagram of physical time-frequency resources
  • FIG. 24 is another schematic diagram of physical time-frequency resources
  • Figure 25 is a schematic diagram of the SSB structure
  • FIG. 26 is a schematic diagram of the frequency domain position of the SSB
  • FIG. 27 is a schematic diagram of SSB being sent periodically in the time domain
  • Figure 28 is a schematic diagram of a cell selection or reselection process
  • Figure 29 is a schematic diagram of the CGI reporting process
  • FIG. 30 is a schematic diagram of the positions of predefined candidate SSBs in a half frame
  • FIG. 31 is a schematic diagram showing that the positions of the actually transmitted SSBs are a subset of the positions of the predefined candidate SSBs.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the terms, but they do not indicate the spatial arrangement or chronological order of these elements. These elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” can refer to a network that meets any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE-A). Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • LTE-A LTE-A
  • Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G , New Radio (NR, New Radio), etc., and/or other currently known or future communication protocols.
  • 1G generation
  • 2G 2.5G
  • 2.75G 3G
  • 4G 4G
  • 4.5G 3G
  • 5G New Radio
  • NR, New Radio New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay), or low-power node (such as femeto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low-power node such as femeto, pico, etc.
  • base station can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "user equipment” (UE, User Equipment) or “terminal equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • the terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • cellular phones Cellular Phone
  • PDAs personal digital assistants
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • a terminal device may also be a machine or device that performs monitoring or measurement.
  • it may include, but is not limited to: Machine Type Communication (MTC) terminals, In-vehicle communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side or “network device side” refers to a side of the network, which may be a certain base station, and may also include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, and may also include one or more terminal devices as described above.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a case where a terminal device and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and terminal devices 102 and 103.
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
  • the network device 101 and the terminal devices 102 and 103 may perform existing service or service transmission that can be implemented in the future.
  • these services may include, but are not limited to: enhanced Mobile Broadband (eMBB), large-scale machine type communication (mMTC, massive Machine Type Communication), and high-reliability and low-latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), etc.
  • uplink control signal and “uplink control information (UCI, Uplink Control Information)” or “physical uplink control channel (PUCCH, Physical Uplink Control Channel)” can be used interchangeably without causing confusion.
  • uplink data signal and “uplink data information” or “Physical Uplink Shared Channel (PUSCH)” can be interchanged.
  • downlink control signal and “Downlink Control Information (DCI)” or “Physical Downlink Control Channel (PDCCH)” can be interchanged, and the terms “downlink data signal” and “downlink data information” Or “Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel)” can be interchanged.
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • sending or receiving PUSCH can be understood as sending or receiving uplink data carried by PUSCH
  • sending or receiving PUCCH can be understood as sending or receiving uplink information carried by PUCCH
  • uplink signals can include uplink data signals and/or uplink control signals, etc.
  • Sending an uplink transmission on an uplink resource can be understood as using the uplink resource to send the uplink transmission.
  • the high-level signaling may be, for example, radio resource control (RRC) signaling; for example, it is called an RRC message (RRC message), for example, it includes MIB, system information (system information), and dedicated RRC message; or RRC IE (RRC information element).
  • RRC radio resource control
  • the high-level signaling may also be, for example, MAC (Medium Access Control) signaling; or called MAC IE (MAC information element). But this application is not limited to this.
  • words such as knowing, determining, judging, and calculating have similar meanings and can be replaced in some cases.
  • FIG. 17 is a schematic diagram of system information acquisition. Taking the terminal device as the UE and the network device as the gNB as an example, the operation of the dotted line is optional.
  • FIG. 18 is a schematic diagram of the relationship between the layers of the user plane protocol stack, taking the terminal device as the UE and the network device as the gNB as an example.
  • Figure 19 is a schematic diagram of the relationship between the control plane protocol stack layers, taking the terminal device as the UE and the network device as the gNB as an example.
  • FIG. 20 is a schematic diagram of frequency domain resources, taking a resource block (RB) including 12 subcarriers (SC) as an example.
  • FIG. 21 is a schematic diagram of the relationship among subcarrier spacing, bandwidth, and the number of resource blocks (RB).
  • Figure 22 is a schematic diagram of time domain resources.
  • the time units in the time domain include frame, subframe, slot, and symbol.
  • s0 refers to the first symbol in the time slot, and so on.
  • Figure 25 is a schematic diagram of the SSB structure.
  • Figure 26 is a schematic diagram of the frequency domain position of the SSB, showing whether the SSB has an associated SIB1, where there are multiple SSBs with different frequency domain positions on a carrier; SSB1 and SSB3 have associated SIB1, SSB2 and SSB4 has no associated SIB1.
  • Fig. 27 is a schematic diagram of SSB being periodically transmitted in the time domain, taking the SSB sub-carrier interval of 15 kHz as an example.
  • FIG. 28 is a schematic diagram of a cell selection or reselection process, in which, in order to obtain cell information (cell information, it is necessary to receive cell system information).
  • Fig. 29 is a schematic diagram of the CGI reporting process.
  • Fig. 30 is a schematic diagram of the positions of predefined candidate SSBs in a field.
  • FIG. 31 is a schematic diagram showing that the positions of the actually transmitted SSBs are a subset of the positions of the predefined candidate SSBs.
  • the embodiment of the present application provides a method for receiving system information, which is described from the terminal device side.
  • Fig. 2 is a schematic diagram of a method for receiving system information according to an embodiment of the present application. As shown in Fig. 2, the method includes:
  • the terminal device receives a synchronization signal block (SSB) sent by a network device, and at least one bit in the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block is used to indicate the SSB
  • SSB synchronization signal block
  • PBCH payload physical broadcast channel payload
  • the PBCH payload includes the following information:
  • higher-layer payload includes bits generated by a higher layer (for example, the RRC layer).
  • each field in the messageClassExtension and MIB is regarded as an indication field in the PBCH payload.
  • L1payload includes bits generated by the physical layer, such as In this application, for ease of presentation, each bit generated by the physical layer is regarded as an indication field in the PBCH payload.
  • the above intraFreqReselection; subCarrierSpacingCommon in the PBCH payload can be used; pdcch-ConfigSIB1; and And at least one of ssb-SubcarrierOffset to indicate the QCL relationship between SSBs.
  • the foregoing at least one bit may indicate the QCL relationship between SSBs by indicating a third parameter, and the third parameter may be characterized as Q or
  • the application is not limited to this, and the third parameter may also be characterized by other symbols.
  • the QCL relationship between SSBs can be determined according to the third parameter, for example, according to Or according to The terminal device can determine the QCL relationship between SSBs.
  • the intraFreqReselection in the PBCH payload (more specifically, in the MIB) is used to indicate the third parameter or other information.
  • the terminal device when the cell with the highest rank (or rank) on a frequency is barred (for example, when its cellBarred is set to barred), or is considered barred by the terminal device (For example, when its cellBarred is set to notBarred, but the terminal device fails to receive its SIB1), if its intraFreqReselection is set to notAllowed, the terminal device considers that it is not allowed to select or reselect cells on the same frequency as the cell, that is In other words, the terminal device will not select/reselect cells on the same frequency as the cell; otherwise, the terminal device considers that it is allowed to select/reselect cells on the same frequency as the cell, that is, the terminal device can select /Reselect cells on the same frequency as the cell.
  • intraFreqReselection is used according to the method in Rel-15 NR above, it indicates whether the terminal device is allowed to select/reselect cells on the same frequency as the cell. May cause some problems.
  • the terminal device of the first operator may receive the SSB of the cell of the second operator, and the cell is the highest ranked cell and is barred or is considered barred by the terminal device.
  • the terminal device will consider that it is not allowed to select/reselect cells on the same frequency as the cell, which will cause the terminal device to not continue to receive the SSB of the first operator’s cell on this frequency, thereby affecting the first operator’s
  • the terminal equipment performs cell selection.
  • terminal equipment should not use the method in Rel-15 NR to determine whether it is permissible to select/reselect cells on the same frequency as the cell, and a new method needs to be introduced. For example, in NR-U, the terminal equipment assumes that intraFreqReselection is set to notAllowed when selecting or reselecting (indicated as selection/reselection) of a cell.
  • the terminal device ignores the value of intraFreqReselection in the received PBCH payload (more specifically, in the MIB) when selecting/reselecting a cell, even if the value of intraFreqReselection in the received PBCH payload (more specifically, in the MIB) is The value of intraFreqReselection is allowed, and the terminal device also considers it as notAllowed when selecting/reselecting a cell.
  • This situation can be described, for example, as "When cell status"barred” is indicated or to be treated as if the cell status is "barred”, if the cell operates in unlicensed/shared spectrum, perfrom cell re-selection as if if intraFreqReselection set to not allowed".
  • the terminal device can select/reselect a cell, for example, according to the following method:
  • the terminal device does not need to determine how to select/reselect a cell based on the intraFreqReselection in the PBCH payload (more specifically, in the MIB), and the intraFreqReselection in the PBCH payload (more specifically, in the MIB) can be used to indicate the aforementioned third parameter. Or other information.
  • the terminal device determines the third parameter according to intraFreqReselection in the PBCH payload (more specifically, in the MIB), and then determines the QCL relationship between the SSBs.
  • the subCarrierSpacingCommon in the PBCH payload (more specifically, in the MIB) is used to indicate the third parameter or other information.
  • the indication field subCarrierSpacingCommon is used to indicate the subcarrier spacing (SCS) for SIB1, paging, and/or other broadcast system information.
  • SCS subcarrier spacing
  • SSB is not supported and the above information uses a different SCS.
  • the SSB and the above information always use the same SCS, and the terminal device can learn the SCS of the above information according to the SCS of the SSB. Therefore, in NR-U, the indicator field does not need to assume the role defined in Rel-15, and the indicator field can be used to indicate the above-mentioned third parameter or other information.
  • the indication field may be used to indicate the LSB or MSB of the third parameter, and the terminal device determines the third parameter according to the LSB or MSB of the third parameter indicated by the indication field, and then determines the QCL relationship between the SSBs.
  • the PBCH payload (more specifically, the bits generated by the physical layer) Used to indicate the third parameter or other information.
  • the indicator field Used to indicate the SSB index in FR2.
  • NR-U only supports FR1.
  • the indication field can be used to indicate the above-mentioned third parameter or other information.
  • the indication field may be used to indicate the foregoing third parameter, and the terminal device determines the third parameter according to the indication field, and then determines the QCL relationship between the SSBs.
  • the definitions of FR1 and FR2 are the same as the existing standards, and the description is omitted here.
  • At least one bit of pdcch-ConfigSIB1 in the PBCH payload (more specifically, in the MIB) is used to indicate the third parameter or other information.
  • the indication field pdcch-ConfigSIB1 is used to indicate CORESET#0 configuration.
  • At least one bit of pdcch-ConfigSIB1 in the PBCH payload (more specifically, in the MIB) can be used to indicate the aforementioned third parameter, and the terminal device determines the third parameter according to the at least one bit, thereby determining the QCL relationship between SSBs .
  • the PBCH payload (more specifically, the bits generated by the physical layer) And/or at least one bit in the ssb-SubcarrierOffset in the PBCH payload (more specifically, in the MIB) is used to indicate the third parameter or other information.
  • ssb-SubcarrierOffset are used to indicate the value of k SSB ; for FR2, Used to indicate the SSB index, and ssb-SubcarrierOffset is used to indicate the value of k SSB.
  • the terminal device can determine whether the SSB has an associated SIB1 according to the value of k SSB in the PBCH payload. If there is no associated SIB1, furthermore, it may also determine the associated SIB1 according to the value of k SSB and pdcch-ConfigSIB1. The frequency domain location where the SSB is located or the frequency range of the SSB not associated with SIB1 to receive another SSB and its associated SIB1.
  • the terminal device is based on the ssb-SubcarrierOffset included in the MIB carried by the PBCH and the physical layer payload included Know the value of k SSB.
  • the terminal device determines that CORESET#0 exists, that is, the SSB where the PBCH is located has an associated SIB1, and monitors for scheduling according to the information in the MIB (such as pdcch-ConfigSIB1, etc.)
  • the PDCCH that carries the PDSCH of SIB1, and then receives SIB1.
  • CORESET#0 is a CORESET for Type0-PDCCH CSS set (a CORESET for Type0-PDCCH CSS set).
  • the terminal device detects an SSB (called the first SSB) and determines that CORESET#0 does not exist, and 24 ⁇ k SSB ⁇ 29, the terminal device can determine the closest SSB associated with SIB1 (called the second SSB) The frequency domain position (or the global synchronization channel number GSCN) is Then, the second SSB is received at the frequency domain position to receive SIB1. In, It is the GSCN of the first SSB. Is relative to GSCN offset (can be positive or negative), indicated by pdcch-ConfigSIB1.
  • the SCS of the SSB is always the same as the SCS of information such as SIB1, and k SSB may not need to indicate whether the SSB has an associated SSB.
  • the value of k SSB required in NR-U is more limited, and there is no need to use the corresponding indicator field ( And/or all bits in ssb-SubcarrierOffset) or all indexes corresponding to the indication field indicate the value of k SSB. Therefore, part of the bits in the indication field or the part index corresponding to the indication field may be used to indicate the above-mentioned third parameter or other information.
  • the terminal device determines the third parameter according to the at least one bit, and then determines the inter-SSB QCL relationship.
  • the following is represented by the third parameter as As an example, to pass the at least one indicator field above
  • the specific instruction method for the instruction will be illustrated with examples.
  • subCarrierSpacingCommon can indicate MSB or LSB
  • intraFreqReselection can indicate The LSB or MSB.
  • subCarrierSpacingCommon can indicate MSB or LSB of ssb-SubcarrierOffset
  • LSB of ssb-SubcarrierOffset can indicate The LSB or MSB.
  • the LSB is The lowest binary bit of the binary form
  • the MSB is The highest binary bit of the binary form.
  • the value range of the third parameter may be different. Even, in some cases, the PBCH may not indicate the third parameter. Correspondingly, after receiving the SSB, the terminal device may need to determine whether its PBCH indicates the third parameter and/or the value range of the third parameter, and then receive SIB1 or other SSB according to the information carried by the PBCH.
  • the method may further include:
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter and/or the value range of the third parameter.
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter and/or the selection of the third parameter according to at least one of the following A, B, and C: Value range.
  • whether the synchronization signal block has an associated SIB1 can be determined according to at least one of B and C above.
  • the terminal device may determine whether the synchronization signal block has an associated SIB1 according to the frequency domain position of the synchronization signal block.
  • the terminal device if the synchronization signal block is located in an unlicensed frequency band or a shared frequency band, the terminal device always assumes that the synchronization signal block has an associated SIB1. In other words, for unlicensed frequency bands or shared frequency bands, the terminal device always assumes that the SSB has an associated SIB1.
  • the synchronization signal block if the synchronization signal block is not on the sync raster defined in NR-U, the synchronization signal block has no associated SIB1; if the synchronization signal block is on the sync raster defined in NR-U , The synchronization signal block has an associated SIB1.
  • the synchronization signal block if the synchronization signal block is not on the sync raster defined in Rel-15 NR, the synchronization signal block has no associated SIB1; if the synchronization signal block is in the sync raster defined in Rel-15 NR, On raster, the synchronization signal block has an associated SIB1.
  • mapping relationship between the resource element (Resource Element, RE) of the SSB and the syncraster where it is located is shown in Table 7 and FIG. 3 below.
  • the terminal device may determine whether the synchronization signal block has an associated SIB1 according to the information carried by the synchronization signal block.
  • the terminal device determines whether the synchronization signal block has an associated SIB1 according to the value of k SSB indicated by the synchronization signal block.
  • the manner of indicating the value of k SSB by the synchronization signal block reference may be made to the related technology or the embodiment of the second aspect, which will not be repeated here.
  • the terminal device is based on the MSB in the ssb-SubcarrierOffset and the MSB in the load of the physical broadcast channel contained in the synchronization signal block. It is determined whether the synchronization signal block has an associated SIB1. For example, when the MSB in ssb-SubcarrierOffset and When both are 1, the SSB has no associated SIB1, otherwise, the SSB has an associated SIB1.
  • the terminal device determines whether the synchronization signal block has an associated SIB1 according to at least one bit in at least one of the following indication fields of the physical broadcast channel included in the synchronization signal block:
  • At least one bit of the at least one indication field can be used to indicate the third parameter or other information.
  • at least one bit of the at least one indication field can be used to indicate the Whether the sync signal block has an associated SIB1.
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter according to whether the synchronization signal block has an associated SIB1, which may be:
  • the synchronization signal block has no associated SIB1, determining that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter;
  • the synchronization signal block has an associated SIB1 If the synchronization signal block has an associated SIB1, it is determined that the physical broadcast channel included in the synchronization signal block indicates the third parameter.
  • the terminal device determines the value range of the third parameter according to whether the synchronization signal block has an associated SIB1, which may be:
  • the value range of the third parameter is the first range, for example ⁇ 2, 4 ⁇ ;
  • the value range of the third parameter is the second range, such as ⁇ 1,2,4,8 ⁇ .
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter according to the frequency domain position of the synchronization signal block, which may be:
  • determining that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter If the synchronization signal block is not on the syncraster defined in NR-U, determining that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter;
  • the synchronization signal block is on the syncraster defined in NR-U, it is determined that the physical broadcast channel included in the synchronization signal block indicates the third parameter.
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter according to the frequency domain position of the synchronization signal block, which may be:
  • determining that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter If the synchronization signal block is not on the syncraster defined in Rel-15 NR, determining that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter;
  • the synchronization signal block is on the syncraster defined in Rel-15 NR, it is determined that the physical broadcast channel included in the synchronization signal block indicates the third parameter.
  • the terminal device determines the value range of the third parameter according to the frequency domain position of the synchronization signal block, which may be:
  • the value range of the third parameter is the first range, for example ⁇ 2,4 ⁇ ;
  • the value range of the third parameter is the second range, such as ⁇ 1,2,4,8 ⁇ .
  • the terminal device determines the value range of the third parameter according to the frequency domain position of the synchronization signal block, which may be:
  • the value range of the third parameter is the first range, for example ⁇ 2,4 ⁇ ;
  • the value range of the third parameter is the second range, for example ⁇ 1,2,4,8 ⁇ .
  • sync raster you can refer to related technologies, which will not be repeated here.
  • the relationship between the RE of the SSB and the sync raster where it is located, and the relationship between the sync raster defined in NR-U and the sync raster defined in Rel-15 NR have been briefly explained above, and the description is omitted here. .
  • the terminal device determines, according to the information carried by the synchronization signal block, whether the physical broadcast channel included in the synchronization signal block indicates the third parameter and/or the value range of the third parameter. Yes:
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter and/or information other than the bits that may be used to indicate the third parameter in the information carried by the synchronization signal block.
  • the value range of the third parameter For example, the information carried by the synchronization signal block refers to the at least one indication field (intraFreqReselection; subCarrierSpacingCommon; subCarrierSpacingCommon) in the load of the physical broadcast channel in the synchronization signal block. pdcch-ConfigSIB1; And ssb-SubcarrierOffset) may be used to indicate bits other than the bits of the third parameter.
  • the at least one indication field may also indicate other information.
  • the other information may be used to indicate whether the physical broadcast channel included in the synchronization signal block indicates the first parameter.
  • the value range of the third parameter and/or the third parameter may be used to indicate whether the physical broadcast channel included in the synchronization signal block indicates the first parameter.
  • the method may further include:
  • the terminal device determines an indication field for indicating the third parameter according to the value range of the third parameter.
  • the terminal device determines that the indication field used to indicate the third parameter is subCarrierSpacingCommon or intraFreqReselection, that is, for example, the aforementioned
  • the third parameter is indicated in the manner of Table 5 or Table 6;
  • the terminal device determines that the indication fields used to indicate the third parameter are subCarrierSpacingCommon and intraFreqReselection, that is For example, the third parameter can be indicated in any one of the aforementioned Tables 1 to 4.
  • Figure 2 above only schematically illustrates the embodiments of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 2 above.
  • the bits in the indication field of the PBCH payload defined in Rel-15 NR are supported to be reused to indicate the QCL relationship between SSBs (for example, to indicate the third parameter).
  • NR-U may use Rel-15 NR defined indication field for indicating k SSB (including And ssb-SubcarrierOffset) indicate the third parameter or other information.
  • k SSB including And ssb-SubcarrierOffset
  • the terminal device still determines the value of k SSB according to the method in Rel-15 NR, the value range of k SSB will be limited to the value indicated by the third parameter or other information, thereby restricting the network
  • the flexibility of deployment may even cause the value range of k SSB to fail to meet the actual needs of network deployment.
  • the LSB in ssb-SubcarrierOffset is used to indicate the third parameter
  • the value of LSB in ssb-SubcarrierOffset and the third parameter (for example, The corresponding relationship of the value of) is shown in Table 3 above, for example, when the third parameter is 2 or 8, the LSB in the ssb-SubcarrierOffset needs to be set to 1.
  • the terminal device will determine the value of k SSB according to the LSB of ssb-SubcarrierOffset, and since the LSB of ssb-SubcarrierOffset is set to 1, the value of k SSB can only be an odd number, but the network deployment The actual demand may need to support k SSB can be an even number.
  • an embodiment of the present application provides a method for receiving system information, which is described from the terminal device side.
  • the embodiments of the present application can be combined with the embodiments of the first aspect, or can be implemented separately, and the same content as the embodiments of the first aspect will not be repeated.
  • FIG. 7 is a schematic diagram of a method for receiving system information according to an embodiment of the present application. As shown in FIG. 7, the method includes:
  • a terminal device receives a first synchronization signal block (SSB) sent by a network device; the first synchronization signal block is sent in an unlicensed or shared frequency band, and/or the physical broadcast channel included in the first synchronization signal block And/or the ssb-SubcarrierOffset in the load
  • the first bit in is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter;
  • the terminal device determines a first parameter according to the first synchronization signal block; the first parameter is used by the terminal device to determine the position of the CORESET used to monitor or receive the PDCCH, and the PDCCH is used to schedule the bearer
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • the terminal device receives SIB1 or a second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • Figure 7 above only schematically illustrates the embodiments of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 7 above.
  • the PBCH payload is And/or the bit used to indicate the QCL relationship between SSBs and/or not used to indicate the first parameter in the ssb-SubcarrierOffset is called the first bit.
  • the first bit includes at least one bit, and, in some embodiments, the first bit is the LSB in the ssb-SubcarrierOffset, and the application is not limited thereto.
  • this bit is used to indicate the QCL relationship between the SSBs (for example, indicating the third parameter)
  • the terminal device needs to determine the QCL relationship (or the third parameter) between the SSBs according to the value of this bit in the received PBCH payload; On the contrary, the terminal device does not determine the QCL relationship (or the third parameter) between SSBs according to the value of this bit in the received PBCH payload;
  • the terminal device needs to determine the first parameter according to the value of this bit in the received PBCH payload; otherwise, the terminal device does not determine the first parameter according to the value of this bit in the received PBCH payload.
  • a parameter for example, the terminal device determines the value of the first parameter by assuming the value of the bit or the value of the binary bit corresponding to the bit, and ignores the value of the bit in the PBCH payload.
  • determining the first parameter according to the first synchronization signal block means: the terminal device determines the first parameter according to the information carried by the first synchronization signal block.
  • the information carried (or indicated) by the first synchronization signal block includes the PSS/SSS/PBCH/PBCH contained in the first synchronization signal block.
  • the information carried by DMRS such as PSS/SSS/PBCH DMRS information carried by the sequence, and the bits in the PBCH payload, for example.
  • the first bit can indicate the QCL relationship between SSBs by indicating the third parameter.
  • the specific indication method has been explained in the embodiment of the first aspect. , I won’t repeat it here.
  • the third parameter can be characterized as Q or other symbols.
  • the above-mentioned first parameter is characterized as k SSB , but the present application is not limited to this, and the above-mentioned first parameter may also be characterized as other symbols.
  • the terminal device may determine the position of CORESET for monitoring or receiving the PDCCH according to k SSB , and the PDCCH is used to schedule the PDSCH carrying the SIB1 associated with the first synchronization signal block; and/or the terminal device may determine the foregoing according to k SSB
  • the first sync signal block has no associated SIB1.
  • the terminal device may assume (or determine) that the value of the first bit is 0 or 1, or in other words, assume that the first The value of the binary bit corresponding to the first bit of the parameter is 0 or 1, and then the first bit is determined according to the value of the first bit of the hypothesis or the value of the binary bit corresponding to the first bit of the first parameter of the hypothesis. parameter.
  • the corresponding relationship between the first bit and the binary bit of the first parameter is, for example, shown in Table 0 in the embodiment of the first aspect.
  • the binary bit of the first parameter corresponding to the first bit is the LSB of the binary form of the first parameter (may also be simply referred to as the LSB of the first parameter).
  • the binary bits of the first parameter corresponding to the first bit are the 2LSBs of the binary form of the first parameter (may also be simply referred to as the 2LSBs of the first parameter).
  • the terminal device ignores the load of the physical broadcast channel contained in the received first synchronization signal block when determining the value of the first parameter.
  • And/or ssb-SubcarrierOffset is used to indicate the QCL relationship between SSBs and/or is not used to indicate the value of the first bit of the first parameter. That is, the terminal device does not determine the value of the first parameter according to the first bit in the received PBCH payload. For example, if the terminal device assumes that the value of the first bit is 0 when determining the first parameter, even if the first bit in the received PBCH payload is 1, the terminal device considers the first bit when determining the value of the first parameter. Is 0.
  • the terminal device determines the value of the first parameter (for example, k SSB )
  • the terminal device determines the value of the first parameter (for example, k SSB )
  • the terminal device determines the value of the first parameter (for example, k SSB )
  • the terminal device determines the value of the first parameter (for example, k SSB )
  • the LSB of the ssb-SubcarrierOffset is 0 or 1 (or assuming k The LSB of the SSB is 0 or 1), and the value of the LSB in the ssb-SubcarrierOffset in the received PBCH payload is ignored.
  • the terminal device may determine whether the value of the first bit is 0 or 1 according to information other than the first bit carried by the first synchronization signal block. In some embodiments, the terminal device may determine whether the value of the binary bit corresponding to the first bit of the first parameter is 0 or the value of the binary bit corresponding to the first bit according to the information other than the first bit carried by the first synchronization signal block 1.
  • the terminal device may use a certain method to assume that the LSB in the ssb-SubcarrierOffset (or determine the LSB of the first parameter) is 0 or 1. For example, the terminal device assumes the value of the LSB in the ssb-SubcarrierOffset ( In other words, determine the value of the LSB of the first parameter).
  • MSB(s) and/or in ssb-SubcarrierOffset Assume the value of the LSB in the ssb-SubcarrierOffset (or determine the value of the LSB of the first parameter). Specifically, for example, suppose that the value range of the first parameter that needs to be supported is an even number less than 30 and 31, if the 3MSB in ssb-SubcarrierOffset and If both are 1, the value of the LSB in the ssb-SubcarrierOffset (or the value of the LSB of the first parameter) is 1, otherwise it is 0.
  • the value range of the first parameter is an even number less than 24, and an odd number greater than 24, when the MSB in ssb-SubcarrierOffset and When both are 1, the value of the LSB in the ssb-SubcarrierOffset (or the value of the LSB of the first parameter) is 1, otherwise it is 0.
  • the terminal device for an unlicensed frequency band or a shared frequency band, and/or, if the ssb-SubcarrierOffset in the load of the physical broadcast channel included in the first synchronization signal block is in and/or The first bit in the SSB is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter.
  • the terminal device only uses the ssb-SubcarrierOffset in the load of the physical broadcast channel included in the first synchronization signal block. and / or The bits other than the first bit in determine the first parameter.
  • the LSB of the ssb-SubcarrierOffset is used to indicate the QCL relationship between the SSBs, and the terminal device only uses the 3MSBs in the ssb-SubcarrierOffset (that is, 1 st MSB, 2 nd MSB, and 3 rd MSB) and The bit in determines the value of the first parameter, where 1bit of 3MSBs in ssb-SubcarrierOffset or Used to indicate the LSB of the first parameter.
  • the value of k SSB is the same as the 3MSBs in ssb-SubcarrierOffset and The corresponding relationship of the values is shown in the table below.
  • only part of the value range of the first parameter that can be indicated by the bit used to indicate the first parameter is valid (valid).
  • the range that can be indicated is ⁇ 0,1,2,...15 ⁇ , but only ⁇ 0,1,2,...11 ⁇ or only the values in ⁇ 0,1,2,...12 ⁇ are valid.
  • the terminal device does not expect that the value of the first parameter indicated by the bit used to indicate the first parameter is not within the range of valid values, or in other words, the terminal device does not expect the value of the first parameter indicated by the bit used to indicate the first parameter The value is invalid (invalid).
  • the terminal device shall divide the physical broadcast contained in the first synchronization signal block according to the value carried by the first synchronization signal block.
  • the sum of the ssb-SubcarrierOffset in the load of the channel Information other than "bits in" determines the first parameter.
  • the terminal device can divide the sum of ssb-SubcarrierOffset according to the load of the physical broadcast channel.
  • the bits other than the bits in determine the value of the first parameter (specifically, for example, the value of the LSB of k SSB).
  • the bit is, for example, one or more bits in at least one of the following indication fields:
  • the method before determining the above-mentioned first parameter, the method further includes:
  • the terminal device determines that the load of the physical broadcast channel included in the first synchronization signal block is And/or the type of information indicated by the first bit in ssb-SubcarrierOffset.
  • the PBCH contained in the first synchronization signal block may not necessarily indicate the third parameter (used to determine the QCL relationship between SSBs).
  • the value range of the third parameter may be different.
  • the value range of the first parameter may be different. Therefore, And/or the information type indicated by the first bit in ssb-SubcarrierOffset under different circumstances may be different, that is, it may indicate the first parameter (for example, k SSB ), or may indicate the third parameter (for example, Q), or It indicates both the first parameter (e.g. k SSB ) and the third parameter (e.g. Q).
  • the terminal device may first determine the type of information indicated by the first bit, that is, the first parameter and/or the third parameter, or in other words, the terminal device may determine whether the first bit is used to indicate the first parameter And/or the third parameter.
  • the terminal device determines the type of information indicated by the first bit according to bits other than the first bit carried by the first synchronization signal block.
  • the terminal device may determine the type of information used to indicate the LSB in the ssb-SubcarrierOffset according to other bit information (other than the LSB in the ssb-SubcarrierOffset) carried by the first synchronization signal block.
  • the terminal device can be based on the MSB and ssb-SubcarrierOffset Determine the type of information indicated by the LSB in the ssb-SubcarrierOffset. For example, when the MSB in ssb-SubcarrierOffset and When both are 1, the LSB in ssb-SubcarrierOffset is used to indicate the first parameter (used or not used to indicate the third parameter), and the terminal device determines the value of the first parameter according to the actual LSB value in ssb-SubcarrierOffset; otherwise, , The LSB in the ssb-SubcarrierOffset is not used to indicate the first parameter (used or not used to indicate the third parameter), and the value of the first parameter can be determined according to the aforementioned method.
  • the third parameter For example, when the MSB in ssb-SubcarrierOffset and When both are 1, the LSB in ssb-SubcarrierOffset is not used to indicate the third parameter, and the terminal device uses the method of Table 1 or 2 or 5 or 6 in the embodiment of the first aspect to determine the value of the third parameter, or adopts the first The method of Table 3 or Table 4 in the embodiment on the one hand assumes that the value of the LSB (or its corresponding bit of the third parameter) in the ssb-SubcarrierOffset is 0 or 1.
  • the LSB in the ssb-SubcarrierOffset is used to indicate the third parameter, and the value of the first parameter can be determined according to the actual value of the LSB in the ssb-SubcarrierOffset using the method in Table 3 or Table 4 in the embodiment of the first aspect.
  • the terminal device determines the type of information indicated by the first bit according to whether the first synchronization signal block has an associated SIB1.
  • the terminal device can determine the type of information indicated by the LSB in the ssb-SubcarrierOffset according to whether the first synchronization signal block has an associated SIB1 (or whether it is a CD-SSB). For example, when the first synchronization signal block has no associated SIB1 (or not CD-SSB), the LSB in the ssb-SubcarrierOffset is used to indicate the first parameter, and the terminal device determines the value according to the actual LSB in the ssb-SubcarrierOffset The value of the first parameter; otherwise, the LSB in ssb-SubcarrierOffset is not used to indicate the first parameter. At this time, the value of the first parameter can be determined according to the aforementioned method.
  • whether the first synchronization signal block has an associated SIB1 can be based on at least one of the following D and E The item is OK.
  • the terminal device may determine whether the first synchronization signal block has an associated SIB1 according to the frequency domain position of the first synchronization signal block.
  • the terminal device may determine whether the synchronization signal block has an associated SIB1 according to the information carried by the first synchronization signal block.
  • the terminal device receives the SIB1 associated with the first synchronization signal block according to the first parameter, which may be: the terminal device determines the first synchronization signal block and the common resource block network according to the first parameter. According to the offset between the CRB grids, the SIB1 associated with the first synchronization signal block is received according to the offset.
  • the terminal device determines the above-mentioned offset according to the first parameter and the reference subcarrier interval.
  • the offset may be equal to the product of the first parameter and the granularity indicated by the first parameter, and the granularity indicated by the first parameter may be a reference subcarrier interval. That is to say, the above-mentioned offset includes the first parameter reference subcarrier interval.
  • the reference subcarrier interval may be the subcarrier interval of the first synchronization signal block or the CORESET, or a predefined subcarrier interval, such as 15kHz or 30kHz, which is not limited in this application.
  • the terminal device determines the above-mentioned offset according to the first parameter, the reference subcarrier interval, and the second factor.
  • the offset may be equal to the product of the first parameter and the granularity indicated by the first parameter, and the granularity indicated by the first parameter may also be the product of the reference subcarrier interval and the second factor.
  • the offset may be equal to the product of the first parameter, the granularity indicated by the first parameter, and the second factor, and the granularity indicated by the first parameter may be a reference subcarrier interval.
  • the definition of the reference subcarrier interval is the same as that described above, and the description is omitted here.
  • the terminal device determines the offset between the SSB and the CRB grid according to the first parameter, that is, the first parameter of the SSB
  • the offset or interval between subcarriers and the first subcarrier of the first CRB that overlaps the SSB that is, the CRB with the smallest RB index that overlaps the SSB
  • the terminal device receives the SSB according to the offset Associated SIB1.
  • Figure 8 is a schematic diagram of the above offset, assuming that the subcarrier spacing of SSB and CRB (or CORESET#0) are both 30kHz.
  • the terminal device does not expect that the value of the first parameter is not within the range used to determine the position of the CORESET (or used to determine the offset). For example, when the terminal device always assumes that the first synchronization signal block has an associated SIB1, the terminal device does not expect that the value of the first parameter is not within the range used to determine the position of the CORESET (or to determine the offset).
  • the terminal device if the value of the first parameter is not within the range used to determine the position of the CORESET (or used to determine the offset), the terminal device considers that the first synchronization signal block has no associated SIB1 and does not receive The first synchronization signal block has no associated SIB1.
  • the method before receiving SIB1, the method further includes:
  • the terminal device determines whether to receive the SIB1 according to whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block.
  • the terminal device may receive the SIB1 according to the information carried by the first synchronization signal block (for example, the first parameter determined above); If the synchronization signal block has no associated SIB1, the terminal device can receive other SSBs (for example, the second synchronization signal block) according to the information carried by the first synchronization signal block.
  • the first synchronization signal block for example, the first parameter determined above
  • the terminal device can receive other SSBs (for example, the second synchronization signal block) according to the information carried by the first synchronization signal block.
  • the frequency domain position of the second synchronization signal block is different from the frequency domain position of the first synchronization signal block.
  • the terminal device determines whether to receive the SIB1 according to whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block, that is, whether to receive the SIB1 or not to receive the SIB1. SIB1 associated with the first synchronization signal block.
  • the type of SIB1 can be classified according to the content and/or purpose it includes.
  • SIB1 can be divided into two categories.
  • the first category is, for example, SIB1 does not include servingCellConfigCommon, for example, only includes cellAccessRelatedInfo; the second category is, for example, SIB1 includes servingCellConfigCommon.
  • SIB1 can be divided into two categories according to usage.
  • the first category is not used for supporting initial access, for example, only supporting UE to obtain CGI information of the corresponding cell; the second category is supporting initial access, for example.
  • the terminal device may determine the first synchronization signal according to at least one of the following D and E Whether the block has an associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block:
  • the terminal device determines whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block according to the frequency domain position of the first synchronization signal block, Including: if the first synchronization signal block is located in an unlicensed frequency band or a shared frequency band, the terminal device always assumes that the first synchronization signal block is associated with SIB1, and according to whether the first synchronization signal block is in NR- The type of SIB1 associated with the first synchronization signal block is determined on the sync raster defined in U.
  • the terminal device may determine the type of SIB1 according to whether the first synchronization signal block is on the syncraster defined in NR-U. For example, if the first synchronization signal block is on the sync raster defined in NR-U, it is considered to be the second type, otherwise it is considered to be the first type. For another example, if the first synchronization signal block is on the syncraster defined in NR-U, it is considered to be the second type, and if it is on the syncraster defined in Rel-15 NR but not on the syncraster defined in NR-U, it is considered It is the first category.
  • the terminal device determines whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block according to the frequency domain position of the first synchronization signal block, Including: if the first synchronization signal block is not on the syncraster defined in NR-U, then the first synchronization signal block has no associated SIB1; if the first synchronization signal block is on the syncraster defined in NR-U On raster, the first synchronization signal block has an associated SIB1.
  • the terminal device determines whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block according to the frequency domain position of the first synchronization signal block, Including: if the first synchronization signal block is not on the sync raster defined in Rel-15 NR, then the first synchronization signal block has no associated SIB1; if the first synchronization signal block is defined in Rel-15 NR On the sync raster, the first synchronization signal block has an associated SIB1. Further, the terminal device may determine the type of SIB1 according to whether the first synchronization signal block is on the syncraster defined in NR-U.
  • the first synchronization signal block is on the syncraster defined in NR-U, it is considered to be the second type, and if it is on the syncraster defined in Rel-15 NR but not on the syncraster defined in NR-U, it is considered It is the first category.
  • the terminal device determines whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block according to the information carried by the first synchronization signal block, The method includes: the terminal device determines, according to the first parameter, whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block. If the value of the first parameter is not within the range used to determine the position of the CORESET (or used to determine the offset), the terminal device considers that the first synchronization signal block has no associated SIB1.
  • the terminal device determines whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block according to the information carried by the first synchronization signal block, Including: the terminal device according to the MSB in the ssb-SubcarrierOffset in the load of the physical broadcast channel included in the first synchronization signal block and Determine whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block. For example, when the MSB in ssb-SubcarrierOffset and When both are 1, the first synchronization signal block does not have an associated SIB1; otherwise, the first synchronization signal block has an associated SIB1.
  • the terminal device determines whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block according to the information carried by the first synchronization signal block, The method includes: the terminal device determines whether the first synchronization signal block has an associated SIB1 and/or the first synchronization signal block according to at least one of the following indication fields of the physical broadcast channel included in the first synchronization signal block.
  • Type of associated SIB1 :
  • the above-mentioned indication field may be used to indicate the QCL relationship between SSBs, for example, by indicating the third parameter (Q) to indicate the QCL relationship between SSBs, in addition, the above-mentioned indication field It may also indicate other information, such as “whether the first synchronization signal block has an associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block”, and the terminal device may Determine whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block. This application does not limit the specific instruction method.
  • the terminal device if the above-mentioned first synchronization signal block has no associated SIB1, the terminal device does not receive the SIB1, and the terminal device can determine where the second synchronization signal block associated with SIB1 is located according to the syncraster defined in NR-U. Frequency domain position or frequency range of the first synchronization signal block not associated with SIB1.
  • the PBCH contained in the first synchronization signal block may also indicate the frequency domain position of the SSB (second synchronization signal block) associated with SIB1 or there is no associated SIB1
  • the frequency range of the SSB First Synchronization Signal Block
  • the number of sync rasters defined by NR-U is much smaller than the number of sync rasters defined by Rel-15 NR, it can be based on the sync raster defined by NR-U to indicate the SSB associated with SIB1 (second The frequency domain position of the synchronization signal block) or the frequency range of the SSB (first synchronization signal block) that is not associated with SIB1, thereby greatly reducing the bits required to indicate the information.
  • the saved bits can also be used to indicate other information, such as Indicate the aforementioned third parameter, which in turn indicates the QCL relationship between SSBs.
  • the terminal device may determine whether to receive the SIB1 according to at least one of the following:
  • the terminal device For cell selection or cell reselection, if the type of SIB1 associated with the first synchronization signal block is the first type, the terminal device does not receive the SIB1 associated with the first synchronization signal block;
  • the terminal device receives the SIB1 associated with the first synchronization signal block.
  • CGI report For a cell global identifier report (CGI report), the terminal device receives the SIB1 associated with the first synchronization signal block.
  • the terminal device may further determine whether to receive the SIB1 associated with the first synchronization signal block. For example, for cell selection/reselection (for example, if the terminal device is in the RRC_IDLE or RRC_INACTIVE state, or the terminal device is in the RRC_CONNECTED state but the timer T311 is running), if the type of SIB1 associated with the first synchronization signal block is the first type, Then, the SIB1 associated with the first synchronization signal block is not received. For the CGI report, the terminal device receives the SIB1 associated with the first synchronization signal block.
  • Figure 7 above only schematically illustrates the embodiments of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 7 above.
  • the bits in the indication field in the PBCH payload defined in Rel-15 NR support multiplexing indicate the QCL relationship between SSBs (for example, indicate the third parameter) or other information At the same time, minimize or avoid the impact on other necessary or important information, so that the system can operate normally and efficiently.
  • the embodiment of the present application provides a method for receiving system information, which is described from the terminal device side.
  • the embodiments of this application please refer to the embodiments of the second aspect; in addition, it can be combined with the embodiments of the first and second aspects, or can be implemented separately, and the same content as the embodiments of the first and second aspects is different. Go into details again.
  • FIG. 9 is another schematic diagram of a method for receiving system information according to an embodiment of the present application. As shown in FIG. 9, the method includes:
  • a terminal device receives a first synchronization signal block (SSB) sent by a network device;
  • SSB first synchronization signal block
  • the terminal device determines a second parameter according to the first synchronization signal block.
  • the terminal device determines a first parameter according to the first factor and the second parameter, where the first parameter is used for the terminal device to determine the position of the CORESET used to monitor or receive the PDCCH, and the PDCCH is used for scheduling Carrying the PDSCH of the SIB1 associated with the first synchronization signal block, or used by the terminal device to determine that the first synchronization signal has no associated SIB1; and
  • the terminal device receives SIB1 or a second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • the first parameter or the second parameter may be characterized as k SSB , but the present application is not limited to this, and the first parameter and the second parameter may also be characterized as other symbols.
  • the frequency domain position of the second synchronization signal block is different from the frequency domain position of the first synchronization signal block.
  • the second parameter is determined according to the manner in which k SSB is determined in Rel-15 NR, and the specific determination manner may refer to related technologies, which will not be repeated here.
  • the second parameter is determined according to the method of determining the first parameter in the embodiment of the second aspect.
  • the specific determination method please refer to the embodiment of the second aspect. The content is incorporated here. No longer.
  • the above-mentioned first parameter is determined according to the first factor and the second parameter.
  • the definition of the first parameter is the same as the definition of the first parameter in the embodiment of the second aspect, but the determination method is different.
  • the first parameter is equal to the product of the second parameter and the first factor.
  • the first parameter the second parameter scaled by the first factor.
  • the first parameter is equal to a value obtained by rounding down the product of the second parameter and the first factor.
  • the first parameter is equal to the quotient of the second parameter divided by the first factor.
  • the first parameter is equal to a value obtained by rounding down the quotient of the second parameter divided by the first factor.
  • the value of the first factor is predefined or indicated by the network device.
  • the value of the first factor is greater than 0, such as 1/2, 1/4, 2, 4, etc.
  • the first parameter is represented by k SSB and the second parameter is represented by k′ SSB as an example.
  • k SSB k' SSB *M.
  • M is greater than 0, such as 1/2, 1/4, etc.
  • M 1/2 N
  • N is predefined or indicated by the network device, for example, equal to And/or the number of bits used to indicate the QCL relationship between SSBs in ssb-SubcarrierOffset, more specifically, for example equal to And/or the number of bits used to indicate the third parameter in ssb-SubcarrierOffset.
  • And/or N LSBs in ssb-SubcarrierOffset are used to indicate the third parameter, but it is not limited to this.
  • k SSB k' SSB /M.
  • M is greater than 0, such as 2, 4, etc.
  • M 2 N
  • N is predefined or indicated by the base station, for example, equal to And/or the number of bits used to indicate the QCL relationship between SSBs in ssb-SubcarrierOffset, more specifically, for example equal to And/or ssb-SubcarrierOffset.
  • And/or N LSBs in ssb-SubcarrierOffset are used to indicate the third parameter, but it is not limited to this
  • k SSB not limit the range of, for example, does not limit k SSB comprising only odd or only even-numbered.
  • the processing of the terminal device is the same as that of 703 in the embodiment of the second aspect, and its content is incorporated here, and will not be repeated here.
  • the terminal device can also determine the type of information indicated by the first bit; similar to 705 in the embodiment of the second aspect, the terminal device can also determine the type of information Whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block determines whether to receive the SIB1.
  • the contents of 704 and 705 in the embodiment of the second aspect are combined here, and will not be repeated here.
  • FIG. 9 only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 9 above.
  • the bits in the indication field in the PBCH payload defined in Rel-15 NR support multiplexing indicate the QCL relationship between SSBs (for example, indicate the third parameter) or other information At the same time, minimize or avoid the impact on other necessary or important information, so that the system can operate normally and efficiently.
  • the embodiment of the present application provides a system information receiving device.
  • the device may be, for example, a terminal device, or may be a certain or some components or components configured on the terminal device.
  • the embodiments of the present application it is collectively referred to as being configured on the terminal device.
  • the content of the embodiment of the present application that is the same as the embodiment of the second or third aspect will not be repeated.
  • FIG. 10 is a schematic diagram of the system information receiving apparatus according to an embodiment of the present application. As shown in FIG. 10, the system information receiving apparatus 1000 includes:
  • the first receiving unit 1001 receives a first synchronization signal block (SSB) sent by a network device, the first synchronization signal block is sent in an unlicensed or shared frequency band, and/or, the first synchronization signal block includes The ssb-SubcarrierOffset in the payload of the physical broadcast channel is neutralized and/or The first bit in is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter;
  • SSB first synchronization signal block
  • a first determining unit 1002 which determines a first parameter according to the first synchronization signal block, and the first parameter is used by the terminal device to determine the position of the CORESET used to monitor or receive the PDCCH, and the PDCCH is used to schedule and carry the The PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1; and
  • the second receiving unit 1003 receives the SIB1 or the second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • determining the first parameter by the first determining unit 1002 includes: determining the first parameter by the first determining unit 1002 according to one of the following methods:
  • the indication field in the ssb-SubcarrierOffset carried by the first synchronization signal block except for the load of the physical broadcast channel included in the first synchronization signal block The bits other than the bits in determine the first parameter.
  • the first determining unit 1002 assumes that the value of the first bit is 0 or 1, or assumes that the value of the binary bit of the first parameter corresponding to the first bit is 0. Or in the case of 1, the first determining unit 1002 determining the first parameter further includes:
  • the first determining unit 1002 determines whether the value of the first bit is 0 or 1 according to information other than the first bit carried by the first synchronization signal block, or according to the information carried by the first synchronization signal block Information other than the first bit determines whether the value of the binary bit corresponding to the first bit of the first parameter is 0 or 1.
  • the system information receiving apparatus 1000 further includes:
  • the second determining unit 1004 which determines the load of the physical broadcast channel included in the first synchronization signal block before the first determining unit 1002 determines the first parameter And/or the type of information indicated by the first bit in the ssb-SubcarrierOffset.
  • the second receiving unit 1003 receiving SIB1 according to the first parameter includes:
  • the second receiving unit 1003 determines the offset between the first synchronization signal block and the common resource block grid (CRB grid) according to the first parameter and the reference subcarrier interval, and receives the offset from the common resource block grid (CRB grid) according to the offset.
  • SIB1 associated with the first synchronization signal block;
  • the reference subcarrier interval is the subcarrier interval of the first synchronization signal block or the CORESET, or a predefined subcarrier interval.
  • the second receiving unit 1003 further determines the offset between the first synchronization signal block and a common resource block grid (CRB grid) according to a second factor.
  • CRB grid common resource block grid
  • the terminal device does not expect that the value of the first parameter is not within the range for determining the position of the CORESET.
  • FIG. 11 is another schematic diagram of the system information receiving apparatus according to an embodiment of the present application. As shown in FIG. 11, the system information receiving apparatus 1100 includes:
  • a first receiving unit 1101 which receives a first synchronization signal block (SSB) sent by a network device;
  • SSB synchronization signal block
  • a first determining unit 1102 which determines a second parameter according to the first synchronization signal block
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • the second receiving unit 1104 receives the SIB1 or the second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • the first parameter or the second parameter is characterized as k SSB .
  • determining the second parameter by the first determining unit 1102 includes: determining the second parameter by the first determining unit 1102 according to one of the following methods:
  • the first determining unit 1102 assumes that the value of the first bit is 0 or 1, or assumes the value of the binary bit corresponding to the first bit of the second parameter In the case of 0 or 1, the first determining unit 1102 determining the second parameter further includes:
  • the first determining unit 1102 determines whether the value of the first bit is 0 or 1 according to information other than the first bit carried by the first synchronization signal block, or according to the information carried by the first synchronization signal block Information other than the first bit determines whether the value of the binary bit corresponding to the first bit of the second parameter is 0 or 1.
  • the system information receiving apparatus 1100 further includes:
  • the third determining unit 1105 which determines the load of the physical broadcast channel included in the first synchronization signal block before the first determining unit 1102 determines the second parameter And/or the type of information indicated by the first bit in ssb-SubcarrierOffset.
  • the first parameter is equal to the product of the second parameter and the first factor, or the first parameter is equal to the product of the second parameter and the first factor. The value obtained after rounding down.
  • the second receiving unit 1104 receiving the SIB1 according to the first parameter includes:
  • the second receiving unit 1104 determines the offset between the first synchronization signal block and the common resource block grid (CRB grid) according to the first parameter and the reference subcarrier interval, and receives the offset according to the offset SIB1;
  • the reference subcarrier interval is the subcarrier interval of the first synchronization signal block or the CORESET, or a predefined subcarrier interval.
  • the second receiving unit 1104 further determines the offset between the first synchronization signal block and a common resource block grid (CRB grid) according to a second factor.
  • CRB grid common resource block grid
  • the terminal device does not expect that the value of the first parameter is not within the range for determining the position of the CORESET.
  • FIG. 12 is another schematic diagram of the system information receiving apparatus according to an embodiment of the present application. As shown in FIG. 12, the system information receiving apparatus 1200 includes:
  • a receiving unit 1201 which receives a synchronization signal block (SSB) sent by a network device;
  • SSB synchronization signal block
  • At least one bit in the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block is used to indicate the QCL relationship between SSBs:
  • the at least one indication field indicates the QCL relationship between the SSBs by indicating a third parameter.
  • the terminal device assumes that intraFreqReselection is set to notAllowed when selecting or reselecting a cell.
  • system information receiving apparatus 1000/1100/1200 may also include other components or modules.
  • FIGS. 10, 11, and 12 only exemplarily show the connection relationship or signal direction between the various components or modules, but it should be clear to those skilled in the art that various related connections such as bus connection can be used. technology.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • the bits in the indication field in the PBCH payload defined in Rel-15 NR support multiplexing indicate the QCL relationship between SSBs (for example, indicate the third parameter) or other information At the same time, minimize or avoid the impact on other necessary or important information, so that the system can operate normally and efficiently.
  • the embodiment of the present application provides a method for sending system information, which is described from the network device side.
  • system information which is described from the network device side.
  • FIG. 13 is a schematic diagram of a system information sending method according to an embodiment of the present application. As shown in FIG. 13, the system information sending method includes:
  • a network device sends a synchronization signal block to a terminal device, where at least one bit of at least one of the following indication fields in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block indicates the QCL relationship between SSBs:
  • PBCH payload physical broadcast channel payload
  • the network device may also send other information to the terminal device.
  • the network device may also send other information to the terminal device.
  • reference may be made to the related content of the network device in Embodiment 1 to Embodiment 3, which will not be repeated here.
  • the bits in the indication field in the PBCH payload defined in Rel-15 NR support multiplexing indicate the QCL relationship between SSBs (for example, indicate the third parameter) or other information At the same time, minimize or avoid the impact on other necessary or important information, so that the system can operate normally and efficiently.
  • the embodiments of the present application also provide a system information sending device.
  • the device may be, for example, a network device, or some components or components configured in the network device.
  • the device is collectively referred to as For configuration in network equipment.
  • the content of the embodiment of the present application that is the same as the embodiment of the fifth aspect will not be repeated.
  • FIG. 14 is a schematic diagram of a system information sending device according to an embodiment of the present application. As shown in FIG. 14, the system information sending device 1400 includes:
  • the sending unit 1401 sends a synchronization signal block to the terminal device, and at least one bit of the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block indicates the QCL relationship between SSBs:
  • PBCH payload physical broadcast channel payload
  • the sending unit 1401 may also send other information to the terminal device.
  • the sending unit 1401 may also send other information to the terminal device.
  • the bits in the indication field in the PBCH payload defined in Rel-15 NR support multiplexing indicate the QCL relationship between SSBs (for example, indicate the third parameter) or other information At the same time, minimize or avoid the impact on other necessary or important information, so that the system can operate normally and efficiently.
  • An embodiment of the present application also provides a communication system, which may refer to FIG. 1, and the same content as the embodiments of the first aspect to the sixth aspect will not be repeated.
  • the communication system 100 may include:
  • the terminal device 102 includes the system information receiving apparatus 1000/1100/1200 as described in the embodiment of the fourth aspect.
  • the communication system 100 may include:
  • the terminal device 102 which includes the system information receiving apparatus 1000/1100/1200 as described in the embodiment of the fourth aspect;
  • the network device 101 includes the system information sending apparatus 1400 as described in the embodiment of the sixth aspect.
  • the embodiments of the present application also provide a network device, which may be a base station, for example, but the present application is not limited to this, and may also be other network devices.
  • a network device which may be a base station, for example, but the present application is not limited to this, and may also be other network devices.
  • Fig. 15 is a schematic diagram of a network device according to an embodiment of the present application.
  • the network device 1500 may include: a processor 1510 (for example, a central processing unit CPU) and a memory 1520; the memory 1520 is coupled to the processor 1510.
  • the memory 1520 can store various data; in addition, it also stores an information processing program 1530, and the program 1530 is executed under the control of the processor 1510.
  • the processor 1510 may be configured to execute a program to implement the system information sending method as described in the embodiment of the fifth aspect.
  • the processor 1510 may be configured to perform the following control: send a synchronization signal block to the terminal device, at least one bit of the following at least one indication field in the physical broadcast channel payload (PBCH payload) contained in the synchronization signal block Indicates the QCL relationship between SSBs:
  • PBCH payload physical broadcast channel payload
  • the network device 1500 may further include: a transceiver 1540 and an antenna 1550, etc.; wherein the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It should be noted that the network device 1500 does not necessarily include all the components shown in FIG. 15; in addition, the network device 1500 may also include components not shown in FIG. 15, and the prior art can be referred to.
  • the embodiments of the present application also provide a terminal device, but the present application is not limited to this, and may also be other devices.
  • FIG. 16 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1600 may include a processor 1610 and a memory 1620; the memory 1620 stores data and programs, and is coupled to the processor 1610. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to achieve telecommunication functions or other functions.
  • the processor 1610 may be configured to execute a program to implement the method described in the embodiment of the first aspect.
  • the processor 1610 may be configured to perform the following control: a terminal device receives a synchronization signal block (SSB) sent by a network device; at least one of the following of the physical broadcast channel payload (PBCH payload) contained in the synchronization signal block At least one bit in the indication field is used to indicate the QCL relationship between SSBs: intraFreqReselection; subCarrierSpacingCommon; pdcch-ConfigSIB1; And ssb-SubcarrierOffset.
  • SSB synchronization signal block
  • PBCH payload physical broadcast channel payload
  • the processor 1610 may be configured to execute a program to implement the method described in the embodiment of the second aspect.
  • the processor 1610 may be configured to perform the following control: the terminal device receives the first synchronization signal block (SSB) sent by the network device; the first synchronization signal block is sent in an unlicensed or shared frequency band, and/or, The ssb-SubcarrierOffset in the load of the physical broadcast channel included in the first synchronization signal block and/or The first bit in the SSB is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter; the terminal device determines the first parameter according to the first synchronization signal block; the first parameter is used for the The terminal device determines the position of the CORESET for monitoring or receiving the PDCCH, the PDCCH is used to schedule the PDSCH carrying the SIB1 associated with the first synchronization signal block, or the first parameter is used for the terminal device to determine the The first synchronization signal has no associated SIB1; the terminal
  • the processor 1610 may be configured to execute a program to implement the method described in the embodiment of the third aspect.
  • the processor 1610 may be configured to perform the following control: a terminal device receives a first synchronization signal block (SSB) sent by a network device; the terminal device determines a second parameter according to the first synchronization signal block; the terminal The device determines the first parameter according to the first factor and the second parameter.
  • the first parameter is used by the terminal device to determine the position of the CORESET for monitoring or receiving the PDCCH.
  • the PDCCH is used for scheduling and carrying the first parameter.
  • the PDSCH of the SIB1 associated with the synchronization signal block or used by the terminal device to determine that the first synchronization signal is not associated with the SIB1; the terminal device receives, according to the first parameter, the PDSCH associated with the first synchronization signal block SIB1 or the second synchronization signal block.
  • the terminal device 1600 may further include: a communication module 1630, an input unit 1640, a display 1650, and a power supply 1660. Among them, the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the terminal device 1600 does not necessarily include all the components shown in FIG. 16, and the above-mentioned components are not necessary; in addition, the terminal device 1600 may also include components not shown in FIG. There is technology.
  • An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the system information receiving method described in the embodiments of the first to third aspects.
  • An embodiment of the present application also provides a storage medium storing a computer program, where the computer program enables a terminal device to execute the system information receiving method described in the embodiments of the first to third aspects.
  • An embodiment of the present application also provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the system information sending method described in the embodiment of the sixth aspect.
  • An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program causes a network device to execute the system information sending method described in the embodiment of the sixth aspect.
  • the above devices and methods of this application can be implemented by hardware, or can be implemented by hardware combined with software.
  • This application relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps.
  • This application also relates to storage media used to store the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.
  • the method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in the figure may correspond to each software module of the computer program flow or each hardware module.
  • These software modules can respectively correspond to the steps shown in the figure.
  • These hardware modules can be implemented by solidifying these software modules by using a field programmable gate array (FPGA), for example.
  • FPGA field programmable gate array
  • the software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings can be implemented as general-purpose processors, digital signal processors (DSPs) for performing the functions described in this application. ), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any appropriate combination thereof.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, or multiple micro-processing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a method for receiving system information wherein the method includes:
  • the terminal device receives the synchronization signal block (SSB) sent by the network device;
  • SSB synchronization signal block
  • At least one bit in the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block is used to indicate the QCL relationship between SSBs:
  • the terminal device determines whether the physical broadcast channel included in the synchronization signal block indicates the third parameter and/or according to at least one of the following items Or the value range of the third parameter;
  • the terminal device always assumes that the synchronization signal block has an associated SIB1;
  • the synchronization signal block If the synchronization signal block is not on the syncraster defined in NR-U, the synchronization signal block has no associated SIB1; if the synchronization signal block is on the syncraster defined in NR-U, the synchronization signal The block has an associated SIB1; or
  • the synchronization signal block If the synchronization signal block is not on the syncraster defined in Rel-15 NR, the synchronization signal block has no associated SIB1; if the synchronization signal block is on the syncraster defined in Rel-15 NR, then The sync signal block has an associated SIB1.
  • the terminal device determines whether the synchronization signal block has an associated SIB1 according to the value of k SSB indicated by the synchronization signal block;
  • the terminal device determines whether the synchronization signal block has an associated SIB1;
  • the terminal device determines whether the synchronization signal block has an associated SIB1 according to at least one of the following indication fields of the physical broadcast channel included in the synchronization signal block:
  • the synchronization signal block has no associated SIB1, determining that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter;
  • the synchronization signal block has an associated SIB1 If the synchronization signal block has an associated SIB1, it is determined that the physical broadcast channel included in the synchronization signal block indicates the third parameter.
  • the synchronization signal block is not on the sync raster defined in NR-U, it is determined that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter; if the synchronization signal block is defined in NR-U On the syncraster of the synchronization signal block, it is determined that the physical broadcast channel included in the synchronization signal block indicates the third parameter; or
  • the synchronization signal block is not on the sync raster defined in Rel-15 NR, it is determined that the physical broadcast channel included in the synchronization signal block does not indicate the third parameter; if the synchronization signal block is on the Rel-15 NR On the sync raster defined in, it is determined that the physical broadcast channel included in the synchronization signal block indicates the third parameter.
  • the synchronization signal block has no associated SIB1, determining that the value range of the third parameter is the first range;
  • the synchronization signal block has an associated SIB1 If the synchronization signal block has an associated SIB1, it is determined that the value range of the third parameter is the second range.
  • the value range of the third parameter is determined to be the first range; if the synchronization signal block is on the sync raster defined in NR-U, Then it is determined that the value range of the third parameter is the second range; or
  • the value range of the third parameter is determined to be the first range; if the synchronization signal block is on the syncraster defined in Rel-15 NR Above, it is determined that the value range of the third parameter is the second range.
  • the terminal device determines an indication field for indicating the third parameter according to the value range of the third parameter.
  • the terminal device determines that the indication field used to indicate the third parameter is subCarrierSpacingCommon or intraFreqReselection;
  • the terminal device determines that the indication fields used to indicate the third parameter are subCarrierSpacingCommon and intraFreqReselection.
  • a method for receiving system information includes:
  • the terminal device receives the first synchronization signal block (SSB) sent by the network device;
  • the first synchronization signal block is sent in an unlicensed or shared frequency band, and/or the load of the physical broadcast channel included in the first synchronization signal block Ssb-SubcarrierOffset in and/or
  • the first bit in is used to indicate the QCL relationship between SSBs and/or is not used to indicate the first parameter;
  • the terminal device determines the first parameter according to the first synchronization signal block; the first parameter is used by the terminal device to determine the position of the CORESET used to monitor or receive the PDCCH, and the PDCCH is used to schedule the bearer
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • the terminal device receives the SIB1 or the second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • determining the first parameter includes: the terminal device determines the first parameter according to one of the following methods:
  • determining the first parameter further includes:
  • the terminal device determines whether the value of the first bit is 0 or 1 according to information other than the first bit carried by the first synchronization signal block, or according to information other than the first bit carried by the first synchronization signal block.
  • Information other than the first bit determines whether the value of the binary bit corresponding to the first bit of the first parameter is 0 or 1.
  • the terminal device determines that the load of the physical broadcast channel included in the first synchronization signal block is And/or the type of information indicated by the first bit in the ssb-SubcarrierOffset.
  • the terminal device determines the type of information indicated by the first bit according to the bits other than the first bit carried by the first synchronization signal block; or
  • the terminal device determines the type of information indicated by the first bit according to whether the first synchronization signal block has an associated SIB1.
  • the terminal device determines the offset between the first synchronization signal block and a common resource block grid (CRB grid) according to the first parameter and the reference subcarrier interval; wherein, the reference subcarrier interval is the The first synchronization signal block or the sub-carrier interval of the CORESET, or the predefined sub-carrier interval.
  • CB grid common resource block grid
  • the terminal device receives the SIB1 associated with the first synchronization signal block according to the offset.
  • the terminal device determines whether to receive the SIB1 according to whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block.
  • the method according to appendix 27, wherein the terminal device determines whether the first synchronization signal block has an associated SIB1 and/or the first synchronization according to the frequency domain position of the first synchronization signal block includes:
  • the terminal device always assumes that the first synchronization signal block has an associated SIB1, and determines whether the first synchronization signal block is in NR-U
  • the type of SIB1 associated with the first synchronization signal block is determined on the defined syncraster; or
  • the first synchronization signal block is not on the syncraster defined in NR-U, then the first synchronization signal block has no associated SIB1; if the first synchronization signal block is on the syncraster defined in NR-U , The first synchronization signal block has an associated SIB1; or
  • the first synchronization signal block is not on the sync raster defined in Rel-15 NR, then the first synchronization signal block has no associated SIB1; if the first synchronization signal block is in the sync raster defined in Rel-15 NR On raster, the first synchronization signal block has an associated SIB1.
  • the type of SIB1 associated with the signal block includes at least one of the following:
  • the terminal device Determining, by the terminal device, whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block according to the first parameter;
  • the terminal device Determining whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block;
  • the terminal device determines, according to at least one of the following indication fields of the physical broadcast channel included in the first synchronization signal block, whether the first synchronization signal block is associated with SIB1 and/or the first synchronization signal block is associated Types of SIB1:
  • the terminal device determines the frequency domain position of the second synchronization signal block associated with SIB1 or the frequency range of the first synchronization signal block not associated with SIB1 according to the sync raster defined in NR-U.
  • the terminal device determines whether to receive the SIB1 according to at least one of the following:
  • the terminal device For cell selection or cell reselection, if the type of SIB1 associated with the first synchronization signal block is the first type, the terminal device does not receive the SIB1 associated with the first synchronization signal block;
  • the terminal device receives the SIB1 associated with the first synchronization signal block.
  • CGI report For a cell global identifier report (CGI report), the terminal device receives the SIB1 associated with the first synchronization signal block.
  • a method for receiving system information includes:
  • the terminal device receives the first synchronization signal block (SSB) sent by the network device;
  • SSB synchronization signal block
  • the terminal device determines the first parameter according to the first factor and the second parameter, and the first parameter is used for the terminal device to determine the position of the CORESET for monitoring or receiving the PDCCH, and the PDCCH is used for scheduling the bearer
  • the PDSCH of the SIB1 associated with the first synchronization signal block, or the first parameter is used by the terminal device to determine that the first synchronization signal has no associated SIB1;
  • the terminal device receives the SIB1 or the second synchronization signal block associated with the first synchronization signal block according to the first parameter.
  • determining the second parameter includes: the terminal device determines the second parameter according to one of the following methods:
  • determining the second parameter further includes:
  • the terminal device determines whether the value of the first bit is 0 or 1 according to information other than the first bit carried by the first synchronization signal block, or, according to the addition of all information carried by the first synchronization signal block
  • the information other than the first bit determines whether the value of the binary bit corresponding to the first bit of the second parameter is 0 or 1.
  • the terminal device determines that the load of the physical broadcast channel included in the first synchronization signal block is And/or the type of information indicated by the first bit in ssb-SubcarrierOffset.
  • determining the type of information indicated by the first bit includes:
  • the terminal device determines the type of information indicated by the first bit according to the bits other than the first bit carried by the first synchronization signal block; or
  • the terminal device determines the type of information indicated by the first bit according to whether the first synchronization signal block has an associated SIB1.
  • the terminal device determines the offset between the first synchronization signal block and a common resource block grid (CRB grid) according to the first parameter and the reference subcarrier interval; wherein, the reference subcarrier interval is the The first synchronization signal block or the sub-carrier interval of the CORESET, or the predefined sub-carrier interval
  • the terminal device receives the SIB1 according to the offset.
  • the terminal device determines whether to receive the SIB1 according to whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block.
  • the method according to Supplement 45 wherein the terminal device determines whether the first synchronization signal block has an associated SIB1 and/or the first synchronization according to the frequency domain position of the first synchronization signal block
  • the type of SIB1 associated with the signal block includes:
  • the terminal device always assumes that the first synchronization signal block has an associated SIB1, and determines whether the first synchronization signal block is in NR-U
  • the type of SIB1 associated with the first synchronization signal block is determined on the defined syncraster; or
  • the first synchronization signal block is not on the syncraster defined in NR-U, then the first synchronization signal block has no associated SIB1; if the first synchronization signal block is on the syncraster defined in NR-U , The first synchronization signal block has an associated SIB1; or
  • the first synchronization signal block is not on the sync raster defined in Rel-15 NR, then the first synchronization signal block has no associated SIB1; if the first synchronization signal block is in the sync raster defined in Rel-15 NR On raster, the first synchronization signal block has an associated SIB1.
  • the type of SIB1 associated with the signal block includes at least one of the following:
  • the terminal device Determining, by the terminal device, whether the first synchronization signal block has an associated SIB1 and/or the type of the SIB1 associated with the first synchronization signal block according to the first parameter;
  • the terminal device Determining whether the first synchronization signal block has associated SIB1 and/or the type of SIB1 associated with the first synchronization signal block;
  • the terminal device determines, according to at least one of the following indication fields of the physical broadcast channel included in the first synchronization signal block, whether the first synchronization signal block is associated with SIB1 and/or the first synchronization signal block is associated Types of SIB1:
  • the terminal device determines the frequency domain position of the second synchronization signal block associated with SIB1 or the frequency range of the first synchronization signal block not associated with SIB1 according to the sync raster defined in NR-U.
  • the terminal device determines whether to receive the SIB1 according to at least one of the following:
  • the terminal device For cell selection or cell reselection, if the type of SIB1 associated with the first synchronization signal block is the first type, the terminal device does not receive the SIB1 associated with the first synchronization signal block;
  • the terminal device receives the SIB1 associated with the first synchronization signal block.
  • CGI report For a cell global identifier report (CGI report), the terminal device receives the SIB1 associated with the first synchronization signal block.
  • a method for sending system information wherein the method includes:
  • the network device sends a synchronization signal block to the terminal device, and at least one bit in the following at least one indication field in the physical broadcast channel payload (PBCH payload) included in the synchronization signal block indicates the QCL relationship between SSBs:
  • PBCH payload physical broadcast channel payload
  • a terminal device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the method according to any one of appendix 1 to 49.
  • a network device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the method described in appendix 50.
  • a communication system comprising the terminal equipment described in Supplement 51, or the terminal equipment described in Supplement 51 and the network equipment described in Supplement 52.

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Abstract

本申请实施例提供一种系统信息接收方法以及装置；该方法包括：终端设备接收网络设备发送的第一同步信号块(SSB)，该第一同步信号块在非授权或共享频段发送，和/或，该第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或 (I) 中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；所述终端设备根据所述第一同步信号块确定第一参数(kSSB)，根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。

Description

系统信息接收方法以及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
在新无线的版本15(Rel-15 NR)中，系统信息(SI)包括主信息块(Master Information Block，MIB)和系统信息块(SystemInformationBlocks，SIBs)，系统信息分为最小系统信息(Minimum SI)和其它系统信息(Other SI)。其中，Minimum SI包括终端设备进行初始接入所需的基本信息和获取Other SI所需的信息。Minimum SI可以分为两部分：MIB和SIB1。
MIB包括小区禁止(接入)状态(cell bar status)信息和接收进一步系统信息所需的小区的核心物理层信息，例如CORESET(例如CORESET#0)配置，该CORESET配置可以用于监听或接收用于调度承载SIB1的PDSCH(物理下行共享信道)的PDCCH(物理下行控制信道)。MIB在BCH(广播信道)上周期性广播。
SIB1包括其他SIBs的调度信息和初始接入所需的信息。SIB1也称为剩余最小系统信息(Remaining minimum system information，RMSI)，在下行共享信道(Downlink Shared Channel，DL-SCH)上周期性广播或者在DL-SCH通过专用方式发送给无线资源控制连接态(RRC_CONNECTED state)的终端设备。
在一些情况下，例如，终端设备处于无线资源控制空闲态(RRC_IDLE state)或处于无线资源控制非激活态(RRC_INACTIVE state)，或者终端设备处于RRC_CONNECTED态但定时器T311正在运行时，或者网络设备指示终端设备上报小区全局标识(CGI)时，终端设备需要先接收MIB，进而根据MIB接收周期性广播的SIB1。
而在物理层，MIB在物理广播信道(Physical Broadcast Channel，PBCH)上发送，而PBCH则作为同步信号块(SSB)的一部分进行周期性广播。但是，PBCH可能指示其所在的SSB没有关联的SIB1，也就是说，终端设备不能根据该PBCH承载的MIB接收SIB1。进一步地，PBCH还可能指示关联SIB1的SSB所在的频域位置，或者指示终端设备可以假设没有关联SIB1的SSB的频率范围。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现，在新无线版本16(Rel-16 NR)中，将支持在非授权频段(unlicensed spectrum/band)或者说共享频段(shared spectrum/band)上的工作(NR-U，NR operation on unlicensed spectrum)。
在非授权频段或共享频段，为了公平高效地共享频谱资源，设备需要通过信道接入方法或过程判断信道未被其他设备占用时才能发送数据，因此，网络设备可能由于信道被其他设备占用而无法发送SSB。并且，SSB的发送功率以及一定时间内所能发送的SSB个数或时间长度可能还受限于监管要求。因此，为了增强小区覆盖，NR-U引入了更多的候选SSB(candidate SSB)位置(例如通过candidate SSB index表征)。例如，针对SCS＝15kHz，一个周期包括10个candidate SSB位置；针对SCS＝30kHz，一个周期包括20个candidate SSB位置。并且，一个周期中在不同candidate SSB位置发送的SSB(也就是说，对应不同candidate SSB index的SSB)可以是QCL的(QCLed)。
终端设备可以根据一个参数确定SSB之间的QCL关系，进而根据SSB之间的QCL关系接收SIB1。为了使得终端设备在接收到PBCH后能够确定不同时域位置的candidate SSB之间的QCL关系以接收SIB1，需要通过PBCH指示该参数的值，但是目前还没有具体的指示方法。进一步地，由于PBCH所能承载的比特数有限，可能需要复用Rel-15 NR中定义的某些指示域的比特指示该参数的值，但是这可能对需要PBCH指示的其他信息造成影响，终端设备将不能沿用Rel-15中的方法接收系统信息(Minimum SI)。
针对上述问题的至少之一，本申请实施例提供一种系统信息接收方法以及装置，针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示上述参数的值的同时尽可能减小或避免对其他需要PBCH指示的必要或重要信息的影响，使得系统能够正常高效地运行。
根据本申请实施例的一个方面，提供一种系统信息接收方法，其中，所述方法包 括：
终端设备接收网络设备发送的同步信号块(SSB)；
所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000001
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000002
和ssb-SubcarrierOffset。
根据本申请实施例的又一个方面，提供一种系统信息接收装置，配置于终端设备，其中，所述装置包括：
接收单元，其接收网络设备发送的同步信号块(SSB)；
所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000003
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000004
和ssb-SubcarrierOffset。
根据本申请实施例的又一个方面，提供一种系统信息接收方法，其中，所述方法包括：
终端设备接收网络设备发送的第一同步信号块(SSB)；所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000005
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；
所述终端设备根据所述第一同步信号块确定所述第一参数；所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；
所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
根据本申请实施例的又一个方面，提供一种系统信息接收装置，配置于终端设备，其中，所述装置包括：
第一接收单元，其接收网络设备发送的第一同步信号块(SSB)，所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000006
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；
第一确定单元，其根据所述第一同步信号块确定第一参数，所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；
第二接收单元，其根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
根据本申请实施例的又一个方面，提供一种系统信息接收方法，其中，所述方法包括：
终端设备接收网络设备发送的第一同步信号块(SSB)；
所述终端设备根据所述第一同步信号块确定第二参数；
所述终端设备根据第一因子和所述第二参数确定第一参数，所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；
所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
根据本申请实施例的又一个方面，提供一种系统信息接收装置，配置于终端设备，其中，所述装置包括：
第一接收单元，其接收网络设备发送的第一同步信号块(SSB)；
第一确定单元，其根据所述第一同步信号块确定第二参数；
第二确定单元，其根据第一因子和所述第二参数确定第一参数，所述第一参数用 于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；
第二接收单元，其根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
本申请实施例的有益效果之一在于：针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示上述参数(称为第三参数，例如Q的值)的同时尽可能减小或避免对其他需要PBCH指示的必要或重要信息的影响，使得系统能够正常高效地运行。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本申请实施例的通信系统的一示意图；
图2是本申请实施例的系统信息接收方法的一示意图；
图3是SSB的资源单元与其所在的sync raster的映射关系的一示意图；
图4是信道划分的一示例图；
图5是在Rel-15 NR中sync raster的频率位置和相应的GSCN的一示例图；
图6是在NR-U中sync raster的频率位置和相应的GSCN的一示例图；
图7是本申请实施例的系统信息接收方法的一示意图；
图8是SSB与CRB grid的之间的偏移的一示例图；
图9是本申请实施例的系统信息接收方法的另一示意图；
图10是本申请实施例的系统信息接收装置的一示意图；
图11是本申请实施例的系统信息接收装置的另一示意图；
图12是本申请实施例的系统信息接收装置的一示意图；
图13是本申请实施例的系统信息发送方法的一示意图；
图14是本申请实施例的系统信息发送装置的一示意图；
图15是本申请实施例的网络设备的一示意图；
图16是本申请实施例的终端设备的一示意图；
图17是系统信息获取的一示意图；
图18是用户面协议栈层间关系的一示意图；
图19是控制面协议栈层间关系的一示意图；
图20是频域资源的一示意图；
图21是子载波间隔、带宽、以及资源块(RB)个数之间的关系的一示意图；
图22是时域资源的一示意图；
图23是物理时频资源的一示意图；
图24是是物理时频资源的另一示意图；
图25是SSB结构的一示意图；
图26是SSB的频域位置的一示意图；
图27是SSB在时域上周期性发送的一示意图；
图28是小区选择或重选过程的一示意图；
图29是CGI上报过程的一示意图；
图30是半帧里预定义的候选SSBs的位置的一示意图；
图31是实际发送的SSB的位置是预定义的候选SSB的位置的子集的一示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包 括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femeto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域， 这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment或Terminal Device)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
此外，术语“网络侧”或“网络设备侧”是指网络的一侧，可以是某一基站，也可以包括如上的一个或多个网络设备。术语“用户侧”或“终端侧”或“终端设备侧”是指用户或终端的一侧，可以是某一UE，也可以包括如上的一个或多个终端设备。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和终端设备102、103。为简单起见，图1仅以两个终端设备和一个网络设备为例进行说明，但本申请实施例不限于此。
在本申请实施例中，网络设备101和终端设备102、103之间可以进行现有的业务或者未来可实施的业务传输。例如，这些业务可以包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
在以下的说明中，在不引起混淆的情况下，术语“上行控制信号”和“上行控制信息(UCI，Uplink Control Information)”或“物理上行控制信道(PUCCH，Physical Uplink  Control Channel)”可以互换，术语“上行数据信号”和“上行数据信息”或“物理上行共享信道(PUSCH，Physical Uplink Shared Channel)”可以互换。
术语“下行控制信号”和“下行控制信息(DCI，Downlink Control Information)”或“物理下行控制信道(PDCCH，Physical Downlink Control Channel)”可以互换，术语“下行数据信号”和“下行数据信息”或“物理下行共享信道(PDSCH，Physical Downlink Shared Channel)”可以互换。
另外，发送或接收PUSCH可以理解为发送或接收由PUSCH承载的上行数据，发送或接收PUCCH可以理解为发送或接收由PUCCH承载的上行信息；上行信号可以包括上行数据信号和/或上行控制信号等，也可以称为上行传输(UL transmission)或上行信息或上行信道。在上行资源上发送上行传输可以理解为使用该上行资源发送该上行传输。
在本申请实施例中，高层信令例如可以是无线资源控制(RRC)信令；例如称为RRC消息(RRC message)，例如包括MIB、系统信息(system information)、专用RRC消息；或者称为RRC IE(RRC information element)。高层信令例如还可以是MAC(Medium Access Control)信令；或者称为MAC IE(MAC information element)。但本申请不限于此。
本申请涉及的部分缩写/术语相应的英文或中文名称如下：
Figure PCTCN2020084301-appb-000007
Figure PCTCN2020084301-appb-000008
在本申请实施例的各方面中，获知、确定、判断、计算等词语含义相近，在一些情况下可以替换。
为了方便理解，以下对本申请涉及的一些概念通过附图的方式进行说明。
图17是系统信息获取的一示意图，以终端设备为UE，网络设备为gNB为例，其中，虚线的操作是可选的。图18是用户面协议栈层间关系的一示意图，以终端设备为UE，网络设备为gNB为例。图19是控制面协议栈层间关系的一示意图，以终端设备为UE，网络设备为gNB为例。图20是频域资源的一示意图，以一个资源块(RB)包括12个子载波(SC)为例。图21是子载波间隔、带宽、以及资源块(RB)个数之间的关系的一示意图。图22是时域资源的一示意图，时域上的时间单位包括帧(frame)、子帧(subframe)、时隙(slot)、符号(symbol)，图22示出了不同子载波间隔下的各时间单位，其中，s0是指时隙中的第一个符号，以此类推。图23是物理时频资源的一示意图，以SCS＝15kHZ为例，其中，s0是指时隙中的第一个符号，以此类推。图24是是物理时频资源的另一示意图，以SCS＝30kHZ为例，其中，s0 是指时隙中的第一个符号，以此类推。图25是SSB结构的一示意图。图26是SSB的频域位置的一示意图，示出了SSB是否有关联的SIB1，其中，一个载波(carrier)上有多个不同频域位置的SSB；SSB1和SSB3有关联的SIB1，SSB2和SSB4没有关联的SIB1。图27是SSB在时域上周期性发送的一示意图，以SSB的子载波间隔为15kHz为例。图28是小区选择或重选过程的一示意图，其中，为了获取小区信息(cell information，需要接收小区的系统信息)。图29是CGI上报过程的一示意图，其中，为了获取小区的Global-CID(或者说CGI)，需要接收该小区的系统信息。图30是半帧里预定义的候选SSBs的位置的一示意图。图31是实际发送的SSB的位置是预定义的候选SSB的位置的子集的一示意图。
下面结合附图对本申请实施例进行说明。
第一方面的实施例
本申请实施例提供一种系统信息接收方法，从终端设备侧进行说明。
图2是本申请实施例的系统信息接收方法的一示意图，如图2所示，该方法包括：
201，终端设备接收网络设备发送的同步信号块(SSB)，所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000009
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000010
和ssb-SubcarrierOffset。
在Rel-15 NR中，PBCH payload中包括以下信息：
Figure PCTCN2020084301-appb-000011
Figure PCTCN2020084301-appb-000012
在上表中，“higher-layer payload”包括高层(例如RRC层)生成的比特。在本申请中，为便于表述，将messageClassExtension以及MIB中的各个域分别看作PBCH payload中的一个指示域。
此外，在上表中，“L1payload”包括物理层生成的比特，如
Figure PCTCN2020084301-appb-000013
在本申请中，为便于表述，将物理层生成的各个比特分别看作PBCH payload中的一个指示域。
在本申请实施例中，可以采用PBCH payload中的以上intraFreqReselection；subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000014
pdcch-ConfigSIB1；以及
Figure PCTCN2020084301-appb-000015
和ssb-SubcarrierOffset中的至少一个来指示SSB之间的QCL关系。
在一些实施例中，上述至少一个比特可以通过指示第三参数来指示SSB之间的QCL关系，该第三参数可以表征为Q，也可以表征为
Figure PCTCN2020084301-appb-000016
但本申请不限于此，该第三参数也可以表征为其他符号。
根据第三参数可以确定SSB之间的QCL关系，例如，根据
Figure PCTCN2020084301-appb-000017
或者根据
Figure PCTCN2020084301-appb-000018
的值，终端设备可以确定SSB之间的QCL关系。其中
Figure PCTCN2020084301-appb-000019
是SSB中的PBCH的DMRS序列的索引，
Figure PCTCN2020084301-appb-000020
为候选SSB索引(candidate SS/PBCH block index)，其中，对应相同值的SSB是QCL的，该值例如表征为SSB索引(SS/PBCH block index)。
在一些实施例中，PBCH payload中(更具体地，MIB中)的intraFreqReselection用于指示第三参数或其他信息。
在Rel-15 NR中，当一个频率上的秩数(或者说等级)最高的小区(highest ranked cell)是禁止的(barred)(例如当其cellBarred设为barred)，或者被终端设备认为是barred(例如其cellBarred设为notBarred，但终端设备未能成功接收其SIB1)时，若其intraFreqReselection设为notAllowed，终端设备认为选择或重选与该cell在同一频 率上的cells是不允许的，也就是说，终端设备不会选择/重选与该cell在同一频率上的cells；否则，终端设备认为选择/重选与该cell在同一频率上的cells是允许的，也就是说，终端设备可以选择/重选与该cell在同一频率上的cells。
然而，在NR-U中，由于同一频段上可能存在不同运营商的网络，如果根据上述Rel-15 NR中的方法采用intraFreqReselection指示终端设备是否允许选择/重选与该cell在同一频率上的cells可能导致一些问题。例如，第一运营商的终端设备可能接收到第二运营商的小区的SSB，而该小区是highest ranked cell且是barred或被终端设备认为是barred，按照上述方法，若其intraFreqReselection设为notAllowed，终端设备将认为选择/重选与该cell在同一频率上的cells是不允许的，进而导致该终端设备不能继续在该频率上接收第一运营商的小区的SSB，从而影响第一运营商的终端设备进行小区选择。
因此，在NR-U中，终端设备不应采用上述Rel-15 NR中的方法确定选择/重选与该cell在同一频率上的cells是否是允许的，需要引入新的方法。例如，在NR-U中，终端设备在选择或重选(表示为选择/重选)小区时假设intraFreqReselection设为notAllowed。也就是说，终端设备在选择/重选小区时忽略接收到的PBCH payload中(更具体地，MIB中)的intraFreqReselection的值，即使接收到的PBCH的payload中(更具体地，MIB中)的intraFreqReselection的值是allowed，终端设备在选择/重选小区时也认为是notAllowed。这种情况可以例如描述为“When cell status"barred"is indicated or to be treated as if the cell status is"barred",if the cell operates in unlicensed/shared spectrum,perfrom cell re-selection as if if intraFreqReselection is set to not allowed”。
在此基础上，终端设备可以例如根据以下方法选择/重选小区：
Figure PCTCN2020084301-appb-000021
Figure PCTCN2020084301-appb-000022
这样，终端设备不需要根据PBCH payload中(更具体地，MIB中)的intraFreqReselection来确定如何选择/重选小区，PBCH payload中(更具体地，MIB中)的intraFreqReselection可以用于指示上述第三参数或其他信息。例如，用于指示上述第三参数，则终端设备根据PBCH payload中(更具体地，MIB中)的intraFreqReselection确定第三参数，进而确定SSB之间的QCL关系。
在一些实施例中，PBCH payload中(更具体地，MIB中)的subCarrierSpacingCommon用于指示第三参数或其他信息。
在Rel-15 NR中，指示域subCarrierSpacingCommon用于指示针对SIB1，寻呼，和/或其他广播的系统信息的子载波间隔(SCS)。但是，在NR-U中，不支持SSB和上述信息采用不同的SCS。也就是说，SSB和上述信息始终采用相同的SCS，终端设备根据SSB的SCS即可获知上述信息的SCS。因此，在NR-U中，该指示域不需要承担Rel-15中定义的作用，可以采用该指示域指示上述第三参数或其他信息。例如，该指示域可以用于指示上述第三参数的LSB或MSB，终端设备根据该指示域指示的第三参数的LSB或MSB，确定第三参数，进而确定SSB之间的QCL关系。
在一些实施例中，PBCH payload中(更具体地，物理层生成的比特中)的
Figure PCTCN2020084301-appb-000023
用于指示第三参数或其他信息。
在Rel-15 NR中，指示域
Figure PCTCN2020084301-appb-000024
用于指示FR2中的SSB index。但是，目前NR-U仅只支持FR1，当candidate SSB为10个时，不需要使用该指示域来指示candidate SSB index。因此，在NR-U中，当candidate SSB为10个时，可以使用该指示域指示上述第三参数或其他信息。例如，该指示域可以用于指示上述第三参数，终端设备根据该指示域确定第三参数，进而确定SSB之间的QCL关系。在以上以及以下说明中，FR1和FR2的定义与现有标准相同，此处省略说明。
在一些实施例中，PBCH payload中(更具体地，MIB中)的pdcch-ConfigSIB1的至少一个比特用于指示第三参数或其他信息。
在Rel-15 NR中，指示域pdcch-ConfigSIB1用于指示CORESET#0配置。在NR-U中，为了满足非授权或共享频段的频谱监管要求，在20MHz的信道(包括约51(SCS＝30kHz时)和106个RB(SCS＝15kHz))上，CORESET#0包括48(SCS＝30 kHz时)或96个RB(SCS＝15kHz)。因此，相比Rel-15 NR，NR-U中的CORESET#0在频域上的位置是更有限的，不需要使用该指示域中的全部比特或该指示域对应的全部索引指示CORESET#0配置，可以使用该指示域中的部分比特或该指示域对应的部分索引指示上述第三参数或其他信息。例如，PBCH payload中(更具体地，MIB中)的pdcch-ConfigSIB1的至少一个比特可以用于指示上述第三参数，终端设备根据该至少一个比特确定第三参数，进而确定SSB之间的QCL关系。
在一些实施例中，PBCH payload中(更具体地，物理层生成的比特中)的
Figure PCTCN2020084301-appb-000025
和/或PBCH payload中(更具体地，MIB中)的ssb-SubcarrierOffset中的至少一个比特用于指示第三参数或其他信息。
在Rel-15 NR中，针对FR1，
Figure PCTCN2020084301-appb-000026
和ssb-SubcarrierOffset用于指示k SSB的值；针对FR2，
Figure PCTCN2020084301-appb-000027
用于指示SSB index，ssb-SubcarrierOffset用于指示k SSB的值。终端设备接收到SSB后，可以根据PBCH payload中的k SSB的值确定该SSB是否有关联的SIB1，若没有关联的SIB1，进一步地，还可能根据k SSB的值和pdcch-ConfigSIB1确定关联SIB1的SSB所在的频域位置或者没有关联SIB1的SSB的频率范围，以接收另一SSB及其关联的SIB1。
具体地，终端设备根据PBCH承载的MIB包括的ssb-SubcarrierOffset和物理层payload包括的
Figure PCTCN2020084301-appb-000028
获知k SSB的值。针对FR1，若k SSB≤23，则终端设备确定CORESET#0存在，也就是说，该PBCH所在的SSB有关联的SIB1，并根据该MIB中的信息(例如pdcch-ConfigSIB1等)监听用于调度承载SIB1的PDSCH的PDCCH，进而接收SIB1。而若k SSB＞23，则终端设备确定CORESET#0不存在，也就是说，该PBCH所在的SSB没有关联的SIB1。这里，CORESET#0是用于Type0-PDCCH CSS集合的CORESET(a CORESET for Type0-PDCCH CSS set)。
其中，若终端设备检测到一个SSB(称为第一SSB)并确定CORESET#0不存在，且24≤k SSB≤29，终端设备可以确定关联SIB1的SSB(称为第二SSB)的最近的频域位置(或者说全局同步信道号GSCN)是
Figure PCTCN2020084301-appb-000029
进而在该频域位置接收第二SSB以接收SIB1。其中，
Figure PCTCN2020084301-appb-000030
是第一SSB的GSCN。
Figure PCTCN2020084301-appb-000031
是相对于
Figure PCTCN2020084301-appb-000032
的GSCN偏移(可以为正或为负)，通过pdcch-ConfigSIB1指示。若终端设备检测到一个第一SSB并确定CORESET#0不存在，且k SSB＝31，终端设备可以确定
Figure PCTCN2020084301-appb-000033
这个GSCN范围内没有关联SIB1的SSB。
Figure PCTCN2020084301-appb-000034
和
Figure PCTCN2020084301-appb-000035
分别由pdcch-ConfigSIB1中的controlResourceSetZero和searchSpaceZero指示。特别地，若
Figure PCTCN2020084301-appb-000036
终端设备可以认为没有关于关联SIB1的SSB的信息。下面的表0示出了k SSB的值与各指示域的比特的值之间的对应关系。
表0：
Figure PCTCN2020084301-appb-000037
但是，在NR-U中，SSB的SCS与SIB1等信息的SCS始终相同，并且k SSB可能不需要指示SSB是否有关联的SSB。相比Rel-15 NR，NR-U中所需的k SSB的值是更 有限的，不需要使用相应指示域(
Figure PCTCN2020084301-appb-000038
和/或ssb-SubcarrierOffset)中的全部比特或该指示域对应的全部索引指示k SSB的值。因此，可以使用该指示域中的部分比特或该指示域对应的部分索引指示上述第三参数或其他信息。例如，PBCH payload中(更具体地，物理层生成的比特中)的
Figure PCTCN2020084301-appb-000039
和/或PBCH payload中(更具体地，MIB中)的ssb-SubcarrierOffset中的至少一个比特可以用于指示上述第三参数，终端设备根据该至少一个比特确定第三参数，进而确定SSB之间的QCL关系。
下面以第三参数表征为
Figure PCTCN2020084301-appb-000040
为例，对通过上述至少一个指示域对
Figure PCTCN2020084301-appb-000041
进行指示的具体的指示方法进行举例说明。
在一个示例中，假设
Figure PCTCN2020084301-appb-000042
的取值范围为{1,2,4,8}，采用subCarrierSpacingCommon和intraFreqReselection进行指示。上述指示域的值与
Figure PCTCN2020084301-appb-000043
的值的对应关系例如为下面的表1或者表2所示。其中，subCarrierSpacingCommon可以指示
Figure PCTCN2020084301-appb-000044
的MSB或LSB，相应地，intraFreqReselection可以指示
Figure PCTCN2020084301-appb-000045
的LSB或MSB。
表1：
Figure PCTCN2020084301-appb-000046
表2：
Figure PCTCN2020084301-appb-000047
在另一个示例中，假设
Figure PCTCN2020084301-appb-000048
的取值范围为{1,2,4,8}，采用subCarrierSpacingCommon和ssb-SubcarrierOffset中的一个比特(例如LSB)指示。上述指示域的值与
Figure PCTCN2020084301-appb-000049
的值的对应关系例如为下面的表3或者表4所示。其中，subCarrierSpacingCommon可以指示
Figure PCTCN2020084301-appb-000050
的MSB或LSB，相应地，ssb-SubcarrierOffset的LSB可以指示
Figure PCTCN2020084301-appb-000051
的LSB或MSB。
Figure PCTCN2020084301-appb-000052
的LSB即
Figure PCTCN2020084301-appb-000053
的二进制形式的最低二进制位，
Figure PCTCN2020084301-appb-000054
的MSB即
Figure PCTCN2020084301-appb-000055
的二进制形式的最高二进制位。
表3：
Figure PCTCN2020084301-appb-000056
表4：
Figure PCTCN2020084301-appb-000057
在另一个示例中，假设
Figure PCTCN2020084301-appb-000058
的取值范围为{2,4}，采用subCarrierSpacingCommon或intraFreqReselection指示，上述指示域的值与
Figure PCTCN2020084301-appb-000059
的值的对应关系例如为下面的表5或者表6所示。
表5：
Figure PCTCN2020084301-appb-000060
表6：
Figure PCTCN2020084301-appb-000061
以上几个示例只是举例说明，在具体实施过程中，不同情况下可以采用不同的方法来指示
Figure PCTCN2020084301-appb-000062
此处不再赘述。
在本申请实施例中，在不同情况下，第三参数的取值范围可能不同。甚至，在一些情况下，PBCH可能不指示第三参数。相应地，终端设备接收到SSB后，可能需要确定其PBCH是否指示第三参数和/或第三参数的取值范围，进而根据PBCH承载的信息接收SIB1或者其他SSB。
在一些实施例中，如图2所示，该方法还可以包括：
202，所述终端设备确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数和/或所述第三参数的取值范围。
在一些实施例中，终端设备根据以下A，B，C中的至少一项确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数和/或所述第三参数的取值范围。
A：所述同步信号块是否有关联的SIB1；
B：所述同步信号块的频域位置；
C：所述同步信号块所承载的信息。
在一些实施例中，同步信号块是否有关联的SIB1，可以根据以上B，C中的至少一项确定。
例如，终端设备可以根据同步信号块的频域位置确定所述同步信号块是否有关联的SIB1。
在一个例子中，如果所述同步信号块位于非授权频段或者共享频段，则所述终端设备始终假设所述同步信号块有关联的SIB1。也就是说，针对非授权频段或共享频段，终端设备始终假设SSB有关联的SIB1。
在另一个例子中，如果所述同步信号块不在NR-U中定义的sync raster上，则所述同步信号块没有关联的SIB1；如果所述同步信号块在NR-U中定义的sync raster上，则所述同步信号块有关联的SIB1。
在又一个例子中，如果所述同步信号块不在Rel-15 NR中定义的sync raster上，则所述同步信号块没有关联的SIB1；如果所述同步信号块在Rel-15 NR中定义的sync raster上，则所述同步信号块有关联的SIB1。
以上三个例子只是举例说明，本申请并不以此作为限制。关于sync raster的定义，可以参考相关技术，此处省略说明。
其中，SSB的资源单元(Resource Element，RE)与其所在的sync raster的映射关系如下面的表7和图3所示。
表7：
Resource element index k 0
Physical resource block number n PRB of the SS block n PRB＝10
具体可以参考相关技术，此处省略说明。
此外，关于NR-U中定义的sync raster与Rel-15 NR中定义的sync raster之间的关系，以5GHz的非授权频段为例，信道划分例如图4所示。若根据Rel-15 NR定义的sync raster，以5150～5170MHz为例，该频率范围内的sync raster的频率位置和相应的GSCN如图5所示。其他信道同理。
在NR-U中，每个20MHz的信道上仅有1个sync raster。该sync raster是上述Rel-15 NR中定义的相应频率范围内的sync raster中的一个。以5150～5170MHz为例，该频率范围内的1个sync raster的频率位置例如是5155.68MHz(GSCN＝8996)，如 图6所示。其他信道同理。
以上仅对NR-U中定义的sync raster与Rel-15 NR中定义的sync raster之间的关系做了简要说明，具体可以参考相关基础，此处省略说明。
再例如，终端设备可以根据所述同步信号块所承载的信息确定所述同步信号块是否有关联的SIB1。
在一个例子中，终端设备根据所述同步信号块所指示的k SSB的值确定所述同步信号块是否有关联的SIB1。关于同步信号块对k SSB的值的指示方式，可以参考相关技术或第二方面的实施例，此处不再赘述。
在另一个例子中，终端设备根据所述同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000063
确定所述同步信号块是否有关联的SIB1。例如，当ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000064
均为1时，则SSB没有关联的SIB1，否则，SSB有关联的SIB1。
在又一个例子中，终端设备根据所述同步信号块所包含的物理广播信道的以下至少一个指示域中的至少一个比特确定所述同步信号块是否有关联的SIB1：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000065
pdcch-ConfigSIB1。
如前所述，上述至少一个指示域的至少一个比特可以用于指示上述第三参数，也可以用于指示其他信息，在这个例子，上述至少一个指示域的至少一个比特可以用于指示所述同步信号块是否有关联的SIB1。
以上三个例子只是举例说明，本申请并不以此作为限制。
在一些实施例中，终端设备根据所述同步信号块是否有关联的SIB1确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数，可以是：
如果所述同步信号块没有关联的SIB1，则确定所述同步信号块所包含的物理广播信道不指示所述第三参数；
如果所述同步信号块有关联的SIB1，则确定所述同步信号块所包含的物理广播信道指示所述第三参数。
在一些实施例中，终端设备根据所述同步信号块是否有关联的SIB1确定所述第 三参数的取值范围，可以是：
如果所述同步信号块没有关联的SIB1，则确定所述第三参数的取值范围为第一范围，例如{2,4}；
如果所述同步信号块有关联的SIB1，则确定所述第三参数的取值范围为第二范围，例如{1,2,4,8}。
在一些实施例中，终端设备根据所述同步信号块的频域位置确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数，可以是：
如果所述同步信号块不在NR-U中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道不指示所述第三参数；
如果所述同步信号块在NR-U中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道指示所述第三参数。
在一些实施例中，终端设备根据所述同步信号块的频域位置确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数，可以是：
如果所述同步信号块不在Rel-15 NR中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道不指示所述第三参数；
如果所述同步信号块在Rel-15 NR中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道指示所述第三参数。
在一些实施例中，终端设备根据所述同步信号块的频域位置确定所述第三参数的取值范围，可以是：
如果所述同步信号块不在NR-U中定义的sync raster上，则确定所述第三参数的取值范围为第一范围，例如{2,4}；
如果所述同步信号块在NR-U中定义的sync raster上，则确定所述第三参数的取值范围为第二范围，例如{1,2,4,8}。
在一些实施例中，终端设备根据所述同步信号块的频域位置确定所述第三参数的取值范围，可以是：
如果所述同步信号块不在Rel-15 NR中定义的sync raster上，则确定所述第三参数的取值范围为第一范围，例如{2,4}；
如果所述同步信号块在Rel-15 NR中定义的sync raster上，则确定所述第三参数的取值范围为第二范围，例如{1,2,4,8}。
以上只是举例说明，本申请不限于此。关于sync raster的定义，可以参考相关技术，此处不再赘述。此外，关于SSB的RE与其所在的sync raster的位置关系，以及NR-U中定义的sync raster与Rel-15 NR中定义的sync raster之间的关系已经在前面做了简要说明，此处省略说明。
在一些实施例中，终端设备根据所述同步信号块所承载的信息确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数和/或第三参数的取值范围，可以是：
终端设备根据所述同步信号块承载的信息中可能用于指示所述第三参数的比特之外的信息确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数和/或第三参数的取值范围。例如，上述同步信号块所承载的信息是指同步信号块中的物理广播信道的负载中的上述至少一个指示域(intraFreqReselection；subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000066
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000067
和ssb-SubcarrierOffset)中可能用于指示所述第三参数的比特之外的比特。如前所述，上述至少一个指示域除了可以指示上述第三参数以外，还可以指示其他信息，该其他信息例如可以用于指示所述同步信号块所包含的物理广播信道是否指示了所述第三参数和/或第三参数的取值范围。
在一些实施例中，如图2所示，该方法还可以包括：
203，所述终端设备根据所述第三参数的取值范围确定用于指示所述第三参数的指示域。
例如：
如果所述第三参数的取值范围为第一范围(如{2,4})，则所述终端设备确定用于指示所述第三参数的指示域为subCarrierSpacingCommon或intraFreqReselection，即例如可以通过前述表5或表6的方式对第三参数进行指示；
如果所述第三参数的取值范围为第二范围(如{1,2,4,8})，则所述终端设备确定用于指示所述第三参数的指示域为subCarrierSpacingCommon和intraFreqReselection，即例如可以通过前述表1至表4任意一种方式对第三参数进行指示。
以上也只是举例说明，本申请不限于此，也可以采用其他方式来确定指示第三参数的指示域。
值得注意的是，以上附图2仅对本申请实施例进行了示意性说明，但本申请不限 于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图2的记载。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，针对非授权频段或共享频段，支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示SSB之间的QCL关系(例如指示第三参数)。
第二方面的实施例
如第一方面的实施例所述，NR-U可能采用Rel-15 NR中定义的用于指示k SSB的指示域(包括
Figure PCTCN2020084301-appb-000068
和ssb-SubcarrierOffset)中的比特指示第三参数或其他信息。在这种情况下，若终端设备仍根据Rel-15 NR中的方法确定k SSB的值，则k SSB的取值范围将受限于第三参数或其他信息所需指示的值，进而限制网络部署的灵活性，甚至可能导致k SSB的取值范围不能满足网络部署的实际需求。
例如，若采用ssb-SubcarrierOffset中的LSB指示第三参数，ssb-SubcarrierOffset中的LSB的值与第三参数(例如
Figure PCTCN2020084301-appb-000069
)的值的对应关系例如为前面的表3所示，则当第三参数为2或8时，需要将ssb-SubcarrierOffset中的LSB设置为1。如果按照Rel-15 NR中的方法，终端设备将根据ssb-SubcarrierOffset的LSB确定k SSB的值，而由于ssb-SubcarrierOffset的LSB设为1，则k SSB的取值只可能为奇数，但网络部署的实际需求可能需要支持k SSB能够为偶数。
至少针对以上问题，本申请实施例提供一种系统信息接收方法，从终端设备侧进行说明。本申请实施例可以与第一方面的实施例结合起来，也可以单独地进行实施，与第一方面的实施例相同的内容不再赘述。
图7是本申请实施例的系统信息接收方法的一示意图，如图7所示，该方法包括：
701，终端设备接收网络设备发送的第一同步信号块(SSB)；所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000070
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；
702，所述终端设备根据所述第一同步信号块确定第一参数；所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；以及
703，所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
值得注意的是，以上附图7仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图7的记载。
在本申请实施例中，将PBCH payload中的
Figure PCTCN2020084301-appb-000071
和/或ssb-SubcarrierOffset中用于指示SSB之间的QCL关系和/或不用于指示第一参数的比特称为第一比特。该第一比特包括至少一个比特，并且，在一些实施例中，该第一比特是ssb-SubcarrierOffset中的LSB，本申请不限于此。
在本申请实施例中，在701中，“用于指示”是指：
若该比特用于指示SSB之间的QCL关系(例如指示第三参数)，则终端设备需要根据接收到的PBCH payload中的该比特的值确定SSB之间的QCL关系(或者第三参数)；反之，终端设备不根据接收到的PBCH payload中的该比特的值确定SSB之间的QCL关系(或者第三参数)；
若该比特用于指示第一参数，则终端设备需要根据接收到的PBCH payload中的该比特的值确定第一参数；反之，终端设备不根据接收到的PBCH payload中的该比特的值确定第一参数，例如，终端设备通过假设该比特的值或该比特对应的二进制位的值确定第一参数的值，而忽略PBCH payload中的该比特的值。
在本申请实施例中，“用于指示SSB之间的QCL关系和/或不用于指示第一参数”包括以下情况：
用于指示SSB之间的QCL关系且用于指示第一参数；
用于指示SSB之间的QCL关系但不用于指示第一参数；
不用于指示SSB之间的QCL关系且不用于指示第一参数。
在本申请实施例中，在702中，根据第一同步信号块确定第一参数是指：终端设 备根据第一同步信号块承载的信息确定第一参数。
在本申请实施例中，在上文以及下文的说明中，如无特别说明，第一同步信号块承载(或者说指示)的信息包括第一同步信号块所包含的PSS/SSS/PBCH/PBCH DMRS承载的信息，例如PSS/SSS/PBCH DMRS通过序列承载的信息，再例如PBCH payload中的比特等。
在一些实施例中，与第一方面的实施例类似，该第一比特可以通过指示第三参数来指示SSB之间的QCL关系，具体的指示方法已经在第一方面的实施例中做了说明，此处不再赘述。并且，第三参数可以表征为Q，也可以表征为其他符号。
在一些实施例中，上述第一参数表征为k SSB，但本申请不限于此，上述第一参数也可以表征为其他符号。终端设备可以根据k SSB确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH；和/或，终端设备可以根据k SSB确定上述第一同步信号块没有关联的SIB1。
在一些实施例中，在702中，针对非授权频段或共享频段，和/或，如果所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000072
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数，终端设备可以假设(或确定)第一比特的值为0或者1，或者说，假设所述第一参数的与所述第一比特对应的二进制位的值为0或者1，进而根据该假设的第一比特的值或者该假设的第一参数的与第一比特对应的二进制位的值确定第一参数。
第一比特与第一参数的二进制位的对应关系例如第一方面的实施例中的表0所示。
例如，若第一比特是ssb-SubcarrierOffset中的LSB，则与该第一比特对应的第一参数的二进制位是第一参数的二进制形式的LSB(也可简称为第一参数的LSB)。
再例如，若第一比特是ssb-SubcarrierOffset中的2LSBs，则与该第一比特对应的第一参数的二进制位是第一参数的二进制形式的2LSBs(也可简称为第一参数的2LSBs)。
也就是说，终端设备在确定第一参数的值时忽略接收到的第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000073
和/或ssb-SubcarrierOffset中用于指示SSB之间的QCL关系和/或不用于指示所述第一参数的第一比特的值。也就是说，终端设备不根据接收到的PBCH payload中的第一比特确定第一参数的值。例如，若终端设备在确 定第一参数时假设第一比特的值为0，则即使接收到的PBCH payload中的第一比特是1，终端设备在确定第一参数的值时也认为第一比特是0。
仍以通过指示第三参数来指示SSB之间的QCL关系为例。例如，若PBCH payload中的ssb-SubcarrierOffset的LSB用于指示第三参数，则终端设备确定第一参数(例如k SSB)的值时，假设ssb-SubcarrierOffset中的LSB为0或1(或者假设k SSB的LSB为0或1)，而忽略接收到的PBCH payload中的ssb-SubcarrierOffset中的LSB的值。
在以上实施例中，如果终端设备在确定第一参数的值时始终假设ssb-SubcarrierOffset中的LSB为0或1(或者说，第一参数的LSB为0或1)，相应地，将不能支持第一参数为奇数或偶数。但是，考虑网络部署的实际需求，第一参数的取值范围可能需要既包括偶数也包括奇数。在一些实施例中，终端设备可以根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1。在一些实施例中，终端设备可以根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一参数的与所述第一比特对应的二进制位的值为0还是1。
例如，终端设备在确定第一参数的值时，可以采用一定方法假设ssb-SubcarrierOffset中的LSB(或者说确定第一参数的LSB)是0还是1。例如，终端设备根据第一同步信号块和/或其包含的PBCH(简称为SSB/PBCH)承载的其他比特信息(ssb-SubcarrierOffset中的LSB以外的)假设ssb-SubcarrierOffset中的LSB的取值(或者说确定第一参数的LSB的取值)。
例如，根据ssb-SubcarrierOffset中的x(x＝<3)MSB(s)和/或
Figure PCTCN2020084301-appb-000074
假设ssb-SubcarrierOffset中的LSB的取值(或者说确定第一参数的LSB的取值)。具体地，例如，假设需要支持的第一参数取值范围为小于30的偶数以及31，若ssb-SubcarrierOffset中的3MSB和
Figure PCTCN2020084301-appb-000075
均为1，则ssb-SubcarrierOffset中的LSB的取值(或者说第一参数的LSB的取值)为1，否则为0。再例如，假设第一参数取值范围为小于24的偶数，以及大于24的奇数，当ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000076
均为1时，则ssb-SubcarrierOffset中的LSB的取值(或者说第一参数的LSB的取值)为1，否则为0。
在一些实施例中，在702中，针对非授权频段或共享频段，和/或，如果所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000077
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数，终端设备仅根 据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
Figure PCTCN2020084301-appb-000078
中的除所述第一比特以外的比特确定所述第一参数。
例如，ssb-SubcarrierOffset的LSB用于指示SSB之间的QCL关系，则终端设备仅根据ssb-SubcarrierOffset中的3MSBs(也即1 st MSB,2 nd MSB，和3 rd MSB)和
Figure PCTCN2020084301-appb-000079
中的比特确定第一参数的值，其中，ssb-SubcarrierOffset中的3MSBs的1bit或
Figure PCTCN2020084301-appb-000080
用于指示第一参数的LSB。
以第一参数为k SSB为例，k SSB的值与ssb-SubcarrierOffset中的3MSBs和
Figure PCTCN2020084301-appb-000081
的值的对应关系如下表所示。
Figure PCTCN2020084301-appb-000082
在本申请第二方面的实施例中，用于指示第一参数的比特所能指示的第一参数的取值范围中只有部分值是有效的(valid)。例如，能指示的范围是{0,1,2,…15}，但是只有{0,1,2,…11}或者只有{0,1,2,…12}中的值是有效的。终端设备不期望用于指示第一参数的比特所指示的第一参数的值不在有效的值的范围内，或者说，终端设备不期望用于指示第一参数的比特所指示的第一参数的值是无效的(invalid)。
在一些实施例中，在702中，针对非授权频段或共享频段，和/或，如果所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000083
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数，终端设备根据所述第一同步信号块承载的除“所述第一同步信号块所包含的物理广播信道的负载中 的ssb-SubcarrierOffset中的和
Figure PCTCN2020084301-appb-000084
中的比特”以外的信息确定所述第一参数。
例如，终端设备可以根据物理广播信道的负载中除ssb-SubcarrierOffset中的和
Figure PCTCN2020084301-appb-000085
中的比特以外的比特确定第一参数的值(具体例如k SSB的LSB的值)。该比特例如为以下至少一个指示域中的一个或多个比特：
intraFreqReselection；
Figure PCTCN2020084301-appb-000086
pdcch-ConfigSIB1。
在一些实施例中，如图7所示，在确定上述第一参数之前，该方法还包括：
704，所述终端设备确定所述第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000087
和/或ssb-SubcarrierOffset中的第一比特所指示的信息类型。
在一些情况下，例如当上述第一同步信号块没有关联的SIB1时，该第一同步信号块所包含的PBCH可能没有必要指示第三参数(用于确定SSB之间的QCL关系)。或者，在不同情况下，第三参数的取值范围可能不一样。或者，在不同情况下，第一参数的取值范围可能不一样。因此，
Figure PCTCN2020084301-appb-000088
和/或ssb-SubcarrierOffset中的第一比特在不同情况下指示的信息类型可能不一样，也即，有可能指示第一参数(例如k SSB)，也有可能指示第三参数(例如Q)，或者既指示第一参数(例如k SSB)又指示第三参数(例如Q)。
因此，在704中，终端设备可以先确定上述第一比特所指示的信息类型，也即第一参数和/或第三参数，或者说，终端设备确定上述第一比特是否用于指示第一参数和/或第三参数。
在一些实施例中，终端设备根据所述第一同步信号块承载的除所述第一比特以外的比特确定所述第一比特所指示的信息类型。
以ssb-SubcarrierOffset中的LSB为上述第一比特为例。终端设备可以根据第一同步信号块承载的其他比特信息(ssb-SubcarrierOffset中的LSB以外的)确定ssb-SubcarrierOffset中的LSB用于指示的信息类型。
例如，终端设备可根据ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000089
确定ssb-SubcarrierOffset中的LSB所指示的信息类型。例如，当ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000090
均为1时，ssb-SubcarrierOffset中的LSB用于指示第一参数(用于或不用于指示第三参数)，终端设备根据实际的ssb-SubcarrierOffset中的LSB的值确定第 一参数的值；否则，ssb-SubcarrierOffset中的LSB不用于指示第一参数(用于或不用于指示第三参数)，第一参数的值可根据前述的方法确定。针对第三参数也同理，例如，当ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000091
均为1时，ssb-SubcarrierOffset中的LSB不用于指示第三参数，终端设备采用第一方面的实施例中的表1或2或5或6的方法确定第三参数的值，或者，采用第一方面的实施例中的表3或表4的方法并且假设ssb-SubcarrierOffset中的LSB(或其相应的第三参数的比特)的值为0或1。否则，ssb-SubcarrierOffset中的LSB用于指示第三参数，第一参数的值可根据实际的ssb-SubcarrierOffset中的LSB的值采用第一方面的实施例中的表3或表4的方法确定。
在一些实施例中，终端设备根据所述第一同步信号块是否有关联的SIB1确定所述第一比特所指示的信息类型。
仍以ssb-SubcarrierOffset中的LSB为上述第一比特为例。终端设备可根据第一同步信号块是否有关联的SIB1(或者说，是否是CD-SSB)确定ssb-SubcarrierOffset中的LSB用于指示的信息类型。例如，当第一同步信号块没有关联的SIB1(或者说，不是CD-SSB)时，ssb-SubcarrierOffset中的LSB用于指示第一参数，终端设备根据实际的ssb-SubcarrierOffset中的LSB的值确定第一参数的值；否则ssb-SubcarrierOffset中的LSB不用于指示第一参数，此时，第一参数的值可根据前述的方法确定。
在一些实施例中，与第一方面的实施例中“同步信号块是否有关联的SIB1”的判断方式类似，第一同步信号块是否有关联的SIB1，可以根据以下D，E中的至少一项确定。
D：所述第一同步信号块的频域位置；
E：所述第一同步信号块所承载的信息。
例如，终端设备可以根据第一同步信号块的频域位置确定所述第一同步信号块是否有关联的SIB1。
再例如，终端设备可以根据所述第一同步信号块所承载的信息确定所述同步信号块是否有关联的SIB1。
由于在第一方面的实施例中，已经对该判断方式做了详细举例说明，此处不再赘述。
在一些实施例中，在703中，终端设备根据第一参数接收第一同步信号块关联的SIB1，可以是：终端设备根据所述第一参数确定所述第一同步信号块与公共资源块网 格(CRB grid)之间的偏移，再根据所述偏移接收与所述第一同步信号块关联的SIB1。
在一些实施例中，终端设备根据第一参数和参考子载波间隔确定上述偏移。例如，上述偏移可以等于上述第一参数和上述第一参数指示的粒度的乘积，该第一参数指示的粒度可以是参考子载波间隔。也就是说，上述偏移包括第一参数个参考子载波间隔。在一些实施例中，参考子载波间隔可以是所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔，例如15kHz或30kHz等，本申请对此不做限制。
在一些实施例中，终端设备根据第一参数、参考子载波间隔以及第二因子确定上述偏移。例如，上述偏移可以等于上述第一参数和上述第一参数指示的粒度的乘积，该第一参数指示的粒度也可以是参考子载波间隔与第二因子的乘积。再例如，上述偏移可以等于上述第一参数和上述第一参数指示的粒度以及第二因子的乘积，上述第一参数指示的粒度可以是参考子载波间隔。关于参考子载波间隔的定义与前述相同，此处省略说明。
例如，当第一参数的值在某一范围内时，例如{0,1,2,…11}，终端设备根据第一参数确定SSB与CRB grid的之间偏移，也即SSB的第一个子载波和第一个与SSB交叠的CRB(也就是与SSB交叠的RB index最小的CRB)的第一个子载波之间的偏移或间隔；终端设备根据该偏移接收该SSB关联的SIB1。图8是上述偏移的一个示意图，假设SSB和CRB(或者CORESET#0)的子载波间隔均为30kHz。
在一些实施例中，终端设备不期望第一参数的值不在用于确定上述CORESET的位置(或者说用于确定上述偏移)的范围内。例如，终端设备始终假设第一同步信号块有关联的SIB1时，终端设备不期望第一参数的值不在用于确定上述CORESET的位置(或者说用于确定上述偏移)的范围内。
在一些实施例中，若第一参数的值不在用于确定上述CORESET的位置(或者说用于确定上述偏移)的范围内，终端设备认为该第一同步信号块没有关联的SIB1，不接收该第一同步信号块没有关联的SIB1。
在一些实施例中，如图7所示，在接收SIB1之前，该方法还包括：
705，所述终端设备根据所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，确定是否接收所述SIB1。
在本申请实施例中，如果上述第一同步信号块有关联的SIB1，则终端设备可以 根据该第一同步信号块承载的信息(例如前述确定的第一参数)接收该SIB1；如果上述第一同步信号块没有关联的SIB1，则终端设备可以根据该第一同步信号块承载的信息接收其他SSB(例如第二同步信号块)。
在一些实施例中，第二同步信号块的频域位置与第一同步信号块的频域位置不同。
在一些实施例中，终端设备根据该第一同步信号块是否有关联的SIB1和/或该第一同步信号块所关联的SIB1的类型，确定是否接收所述SIB1，也即接收或不接收该第一同步信号块所关联的SIB1。
在一些实施例中，SIB1的类型可以根据其包括的内容和/或用途划分。
例如，根据内容划分，则可以将SIB1分为两类，第一类例如为SIB1不包括servingCellConfigCommon，例如，仅包括cellAccessRelatedInfo；第二类例如为SIB1包括servingCellConfigCommon。
再例如，根据用途划分，则可以将SIB1分为两类，第一类例如为不用于支持初始接入，例如，仅支持UE获取相应小区的CGI信息；第二类例如为支持初始接入。
以上划分方法只是举例说明，本申请不限于此。
在一些实施例中，与第一方面的实施例中关于“同步信号块是否有关联的SIB1”的判断方式类似，终端设备可以根据以下D，E中的至少一项确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型：
D：所述第一同步信号块的频域位置；
E：所述第一同步信号块所承载的信息。
在一些实施例中，终端设备根据所述第一同步信号块的频域位置确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：如果所述第一同步信号块位于非授权频段或者共享频段，则所述终端设备始终假设所述第一同步信号块有关联的SIB1，并根据所述第一同步信号块是否在NR-U中定义的sync raster上确定所述第一同步信号块所关联的SIB1的类型。
也就是说，针对非授权/共享频段，终端设备始终假设第一同步信号块有关联的SIB1。进一步地，终端设备可根据第一同步信号块是否在NR-U中定义的sync raster上确定SIB1的类型。例如，若第一同步信号块在NR-U中定义的sync raster上，认为是第二类，否则认为是第一类。再例如，若第一同步信号块在NR-U中定义的sync raster上，认为是第二类，若在Rel-15 NR定义的sync raster上而不在NR-U中定义的 sync raster上，认为是第一类。
在一些实施例中，终端设备根据所述第一同步信号块的频域位置确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：如果所述第一同步信号块不在NR-U中定义的sync raster上，则所述第一同步信号块没有关联的SIB1；如果所述第一同步信号块在NR-U中定义的sync raster上，则所述第一同步信号块有关联的SIB1。
在一些实施例中，终端设备根据所述第一同步信号块的频域位置确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：如果所述第一同步信号块不在Rel-15 NR中定义的sync raster上，则所述第一同步信号块没有关联的SIB1；如果所述第一同步信号块在Rel-15 NR中定义的sync raster上，则所述第一同步信号块有关联的SIB1。进一步地，终端设备可根据第一同步信号块是否在NR-U中定义的sync raster上确定SIB1的类型。再例如，若第一同步信号块在NR-U中定义的sync raster上，认为是第二类，若在Rel-15 NR定义的sync raster上而不在NR-U中定义的sync raster上，认为是第一类。
在一些实施例中，终端设备根据所述第一同步信号块所承载的信息确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：所述终端设备根据所述第一参数确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型。若第一参数的值不在用于确定上述CORESET的位置(或者说用于确定上述偏移)的范围内，终端设备认为该第一同步信号块没有关联的SIB1。
在一些实施例中，终端设备根据所述第一同步信号块所承载的信息确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：所述终端设备根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000092
确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型。例如，当ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000093
均为1时，则第一同步信号块没有关联的SIB1，否则，第一同步信号块有关联的SIB1。
在一些实施例中，终端设备根据所述第一同步信号块所承载的信息确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包 括：所述终端设备根据所述第一同步信号块所包含的物理广播信道的以下至少一个指示域确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000094
pdcch-ConfigSIB1。
如第一方面的实施例所述，上述指示域可以用于指示SSB之间的QCL关系，例如通过指示第三参数(Q)来指示SSB之间的QCL关系，除此之外，上述指示域还可以指示其他信息，该其他信息例如为“所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型”的信息，终端设备根据该信息可以确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型。本申请对具体的指示方法不做限制。
在以上实施例中，关于“第一同步信号块所承载的信息”已经在前面做了说明，其内容被合并于此，此处不再赘述。
在一些实施例中，如果上述第一同步信号块没有关联的SIB1，则终端设备不接收所述SIB1，终端设备可以根据NR-U中定义的sync raster确定关联SIB1的第二同步信号块所在的频域位置或者没有关联SIB1的第一同步信号块的频率范围。
在上述实施例中，如果第一同步信号块没有关联的SIB1，该第一同步信号块所包含的PBCH还可以指示关联SIB1的SSB(第二同步信号块)所在的频域位置或者没有关联SIB1的SSB(第一同步信号块)的频率范围。但是，与现有技术不同的是，由于NR-U定义的sync raster个数远小于Rel-15 NR定义的sync raster个数，可以基于NR-U定义的sync raster指示关联SIB1的SSB(第二同步信号块)所在的频域位置或者没有关联SIB1的SSB(第一同步信号块)的频率范围，从而大幅度减少指示该信息所需的比特，节省的比特也可以用于指示其他信息，例如指示前述第三参数，进而指示SSB之间的QCL关系。
在一些实施例中，如果上述第一同步信号块有关联的SIB1，终端设备可以根据以下至少一项确定是否接收该SIB1：
针对小区选择或小区重选，如果所述第一同步信号块所关联的SIB1的类型是第 一类，则所述终端设备不接收所述第一同步信号块所关联的SIB1；
针对小区全局标识符上报(CGI report)，所述终端设备接收所述第一同步信号块所关联的SIB1。
在以上实施例中，在第一同步信号块有关联的SIB1的情况下，终端设备可以进一步确定是否接收该第一同步信号块关联的SIB1。例如，针对小区选择/重选(例如，若终端设备处于RRC_IDLE或RRC_INACTIVE态，或者终端设备处于RRC_CONNECTED态但定时器T311正在运行)，若第一同步信号块关联的SIB1的类型是第一类，则不接收该第一同步信号块关联的SIB1。针对CGI report，终端设备接收该第一同步信号块关联的SIB1。
值得注意的是，以上附图7仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图7的记载。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示SSB之间QCL关系(例如指示第三参数)或其他信息的同时尽可能减小或避免对其他必要或重要信息的影响，使得系统能够正常高效地运行。
第三方面的实施例
本申请实施例提供一种系统信息接收方法，从终端设备侧进行说明。本申请实施例解决的问题可以参考第二方面的实施例；此外可以与第一、二方面的实施例结合起来，也可以单独地进行实施，与第一、二方面的实施例相同的内容不再赘述。
图9是本申请实施例的系统信息接收方法的另一示意图，如图9所示，该方法包括：
901，终端设备接收网络设备发送的第一同步信号块(SSB)；
902，所述终端设备根据所述第一同步信号块确定第二参数；
903，所述终端设备根据第一因子和所述第二参数确定第一参数，所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，用于所述终端设备确定所述第一同步信号没有关联的SIB1；以及
904，所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
在一些实施例中，第一参数或者第二参数可以表征为k SSB，但本申请不限于此，第一参数和第二参数也可以表征为其他符号。
在一些实施例中，第二同步信号块的频域位置与第一同步信号块的频域位置不同。
在一些实施例中，在902中，根据Rel-15 NR中确定k SSB的方式确定第二参数，具体的确定方式可以参考相关技术，此处不再赘述。
在一些实施例中，在902中，根据第二方面的实施例确定第一参数的方式确定第二参数，具体的确定方式可以参考第二方面的实施例，其内容被合并于此，此处不再赘述。
在一些实施例中，在903中，根据第一因子和该第二参数确定上述第一参数。在第三方面的实施例中，该第一参数的定义与第二方面的实施例中第一参数的定义相同，但确定方式不同。
例如，所述第一参数等于所述第二参数与所述第一因子的乘积。也就是说，第一参数＝第二参数scaled by第一因子。
再例如，所述第一参数等于对所述第二参数与所述第一因子的乘积进行向下取整后得到的值。
再例如，所述第一参数等于所述第二参数除以所述第一因子的商。
再例如，所述第一参数等于对所述第二参数除以所述第一因子的商进行向下取整后得到的值。
在一些实施例中，第一因子的值是预定义的或网络设备指示的。第一因子的值大于0，例如为1/2，1/4，2，4等。
在一些实施例中，第一因子的值M(符号不限于此)为：M＝1/2 N或者M 2 N，N(符号不限于此)为所述第一比特的个数。
下面以第一参数表征为k SSB，第二参数表征为k′ SSB为例进行说明。
例如，
Figure PCTCN2020084301-appb-000095
或者，k SSB＝k′ SSB*M。其中，k′ SSB的值采用现有方法或者第二方面的实施例的方法确定，M大于0，例如为1/2，1/4等。特别地，M＝1/2 N，N是预定义的或网络设备指示的，例如等于
Figure PCTCN2020084301-appb-000096
和/或ssb-SubcarrierOffset中用于指示SSB之间的QCL关系的比特的个数，更具体的，例如等于
Figure PCTCN2020084301-appb-000097
和/或ssb-SubcarrierOffset中用于指示第三参数的比特的个数。例如，
Figure PCTCN2020084301-appb-000098
和/或ssb-SubcarrierOffset中的N个LSBs用于指示第三参数，但也不限于此。
例如，
Figure PCTCN2020084301-appb-000099
或者，k SSB＝k′ SSB/M。其中，k′ SSB的值采用Rel-15 NR中确定k SSB的方法或者第二方面的实施例的方法确定，M大于0，例如为2，4等。特别地，M＝2 N，N是预定义的或基站指示的，例如等于
Figure PCTCN2020084301-appb-000100
和/或ssb-SubcarrierOffset中用于指示SSB之间的QCL关系的比特的个数，更具体的，例如等于
Figure PCTCN2020084301-appb-000101
和/或ssb-SubcarrierOffset中。例如，
Figure PCTCN2020084301-appb-000102
和/或ssb-SubcarrierOffset中的N个LSBs用于指示第三参数，但也不限于此
下面以
Figure PCTCN2020084301-appb-000103
为例进行说明。
假设M＝1/2，k′ SSB的值采用Rel-15 NR中确定k SSB的方法确定，则k SSB的值与ssb-SubcarrierOffset中的比特和
Figure PCTCN2020084301-appb-000104
的值的对应关系如下表所示。这样，当ssb-SubcarrierOffset的LSB用于指示第三参数时，不会限制k SSB的取值范围，例如不会限制k SSB只包括奇数或只包括偶数。
Figure PCTCN2020084301-appb-000105
Figure PCTCN2020084301-appb-000106
在本申请实施例中，在904中，该终端设备的处理与第二方面的实施例中的703相同，其内容被合并于此，此处不再赘述。
在一些实施例中，与第二方面的实施例中的704类似，终端设备还可以确定第一比特所指示的信息的类型；与第二方面的实施例中的705类似，终端设备还可以根据所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，确定是否接收所述SIB1。关于第二方面的实施例中的704和705的内容被合并于此，此处不再赘述。
值得注意的是，以上附图9仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图9的记载。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示SSB之间QCL关系(例如指示第三参数)或其他信息的同时尽可能减小或避免对其他必要或重要信息的影响，使得系统能够正常高效地运行。
第四方面的实施例
本申请实施例提供一种系统信息接收装置。该装置例如可以是终端设备，也可以是配置于终端设备的某个或某些部件或者组件，为了方便说明，在本申请实施例中，统称为配置于终端设备。本申请实施例与第二或第三方面的实施例相同的内容不再赘述。
图10是本申请实施例的系统信息接收装置的一示意图，如图10所示，系统信息接收装置1000包括：
第一接收单元1001，其接收网络设备发送的第一同步信号块(SSB)，所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000107
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；
第一确定单元1002，其根据所述第一同步信号块确定第一参数，所述第一参数用于终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于终端设备确定所述第一同步信号没有关联的SIB1；以及
第二接收单元1003，其根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
在一些实施例中，所述第一确定单元1002确定第一参数，包括：所述第一确定单元1002根据以下其中一种方式确定所述第一参数：
假设第一比特的值为0或者1；
假设所述第一参数的与所述第一比特对应的二进制位的值为0或者1；
仅根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
Figure PCTCN2020084301-appb-000108
中的除所述第一比特以外的比特确定所述第一参数；
根据所述第一同步信号块承载的除所述第一同步信号块所包含的物理广播信道的负载中的指示域ssb-SubcarrierOffset中的和指示域
Figure PCTCN2020084301-appb-000109
中的比特以外的比特确定所述第一参数。
在一些实施例中，所述第一确定单元1002假设第一比特的值为0或者1的情况下，或者，假设所述第一参数的二进制位的与所述第一比特对应的值为0或者1的情 况下，所述第一确定单元1002确定第一参数还包括：
所述第一确定单元1002根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1，或者根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一参数的与所述第一比特对应的二进制位的值为0还是1。
在一些实施例中，如图10所示，统信息接收装置1000还包括：
第二确定单元1004，其在所述第一确定单元1002确定所述第一参数之前，确定所述第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000110
和/或ssb-SubcarrierOffset中的所述第一比特所指示的信息类型。
在一些实施例中，所述第二接收单元1003根据所述第一参数接收SIB1，包括：
所述第二接收单元1003根据所述第一参数和参考子载波间隔确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移，根据所述偏移接收与所述第一同步信号块关联的SIB1；
其中，所述参考子载波间隔为所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔。
在一些实施例中，所述第二接收单元1003进一步根据第二因子确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移。
在一些实施例中，所述终端设备不期望所述第一参数的值不在用于确定所述CORESET的位置的范围内。
图11是本申请实施例的系统信息接收装置的另一示意图，如图11所示，系统信息接收装置1100包括：
第一接收单元1101，其接收网络设备发送的第一同步信号块(SSB)；
第一确定单元1102，其根据所述第一同步信号块确定第二参数；
第二确定单元1103，其根据第一因子和所述第二参数确定第一参数，所述第一参数用于终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于终端设备确定所述第一同步信号没有关联的SIB1；
第二接收单元1104，其根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
在一些实施例中，所述第一参数或所述第二参数表征为k SSB。
在一些实施例中，所述第一确定单元1102确定第二参数包括：所述第一确定单元1102根据以下其中一种方式确定所述第二参数：
假设第一比特的值为0或者1；
假设所述第二参数的二进制位的与所述第一比特对应的值为0或者1；
仅根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
Figure PCTCN2020084301-appb-000111
和中的除所述第一比特以外的比特确定所述第二参数；
根据所述第一同步信号块承载的除所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和
Figure PCTCN2020084301-appb-000112
中的比特以外的比特确定所述第二参数。
在一些实施例中，所述第一确定单元1102假设所述第一比特的值为0或者1的情况下，或者，假设所述第二参数的与所述第一比特对应的二进制位的值为0或者1的情况下，所述第一确定单元1102确定第二参数还包括：
所述第一确定单元1102根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1，或者根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第二参数的与所述第一比特对应的二进制位的值为0还是1。
在一些实施例中，如图11所示，系统信息接收装置1100还包括：
第三确定单元1105，其在所述第一确定单元1102确定所述第二参数之前，确定所述第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000113
和/或ssb-SubcarrierOffset中的第一比特所指示的信息类型。
在一些实施例中，所述第一因子的值为：M＝1/2 N，M为所述第一因子，N为所述第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000114
和/或ssb-SubcarrierOffset中的用于指示SSB之间的QCL关系和/或不用于指示所述第一参数的第一比特的个数。
在一些实施例中，所述第一参数等于所述第二参数与所述第一因子的乘积，或者，所述第一参数等于对所述第二参数与所述第一因子的乘积进行向下取整后得到的值。
在一些实施例中，所述第二接收单元1104根据所述第一参数接收所述SIB1，包括：
所述第二接收单元1104根据所述第一参数和参考子载波间隔确定所述第一同步 信号块与公共资源块网格(CRB grid)之间的偏移，根据所述偏移接收所述SIB1；
其中，所述参考子载波间隔为所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔。
在一些实施例中，所述第二接收单元1104进一步根据第二因子确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移。
在一些实施例中，所述终端设备不期望所述第一参数的值不在用于确定所述CORESET的位置的范围内。
图12是本申请实施例的系统信息接收装置的又一示意图，如图12所示，系统信息接收装置1200包括：
接收单元1201，其接收网络设备发送的同步信号块(SSB)；
所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000115
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000116
和ssb-SubcarrierOffset。
在一些实施例中，所述至少一个指示域通过指示第三参数指示所述SSB之间的QCL关系。
在一些实施例中，所述终端设备在选择或重选小区时假设intraFreqReselection设为notAllowed。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。系统信息接收装置1000/1100/1200还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图10,11,12中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
以上各实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以 在以上各实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示SSB之间QCL关系(例如指示第三参数)或其他信息的同时尽可能减小或避免对其他必要或重要信息的影响，使得系统能够正常高效地运行。
第五方面的实施例
本申请实施例提供一种系统信息发送方法，从网络设备侧进行说明。本申请实施例解决的问题可以参考第一至第三方面的实施例，与第一至第三方面的实施例相同的内容不再赘述。
图13是本申请实施例的系统信息发送方法的一示意图，如图13所示，系统信息发送方法包括：
1301，网络设备向终端设备发送同步信号块，所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域的至少一个比特指示了SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000117
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000118
和ssb-SubcarrierOffset。
在本申请实施例中，该网络设备还可以向终端设备发送其他信息，具体可以参考实施例一至实施例三中网络设备的相关内容，此处不再赘述。
由上述实施例可知，针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示SSB之间QCL关系(例如指示第三参数)或其他信息的同时尽可能减小或避免对其他必要或重要信息的影响，使得系统能够正常高效地运行。
第六方面的实施例
本申请实施例还提供一种系统信息发送装置，该装置例如可以是网络设备，也可以是配置于网络设备的某个或某些部件或者组件，为了方便说明，在本申请实施例中，统称为配置于网络设备。本申请实施例与第五方面的实施例相同的内容不再赘述。
图14是本申请实施例的系统信息发送装置的一示意图，如图14所示，系统信息发送装置1400包括：
发送单元1401，其向终端设备发送同步信号块，所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域的至少一个比特指示了SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000119
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000120
和ssb-SubcarrierOffset。
在本申请实施例中，该发送单元1401还可以向终端设备发送其他信息，具体可以参考实施例一至实施例三中网络设备的相关内容，此处不再赘述。
由上述实施例可知，针对非授权频段或共享频段，在支持复用Rel-15 NR中定义的PBCH payload中的指示域中的比特指示SSB之间QCL关系(例如指示第三参数)或其他信息的同时尽可能减小或避免对其他必要或重要信息的影响，使得系统能够正常高效地运行。
第七方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第六方面的实施例相同的内容不再赘述。
在一些实施例中，通信系统100可以包括：
终端设备102，其包括如第四方面的实施例所述的系统信息接收装置1000/1100/1200。
在一些实施例中，通信系统100可以包括：
终端设备102，其包括如第四方面的实施例所述的系统信息接收装置1000/1100/1200；以及
网络设备101，其包括如第六方面的实施例所述的系统信息发送装置1400。
本申请实施例还提供一种网络设备，例如可以是基站，但本申请不限于此，还可以是其他的网络设备。
图15是本申请实施例的网络设备的一示意图。如图15所示，网络设备1500可以包括：处理器1510(例如中央处理器CPU)和存储器1520；存储器1520耦合到处理器1510。其中该存储器1520可存储各种数据；此外还存储信息处理的程序1530，并且在处理器1510的控制下执行该程序1530。
例如，处理器1510可以被配置为执行程序而实现如第五方面的实施例所述的系统信息发送方法。例如，处理器1510可以被配置为进行如下的控制：向终端设备发送同步信号块，所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域的至少一个比特指示了SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000121
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000122
和ssb-SubcarrierOffset。
此外，如图15所示，网络设备1500还可以包括：收发机1540和天线1550等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1500也并不是必须要包括图15中所示的所有部件；此外，网络设备1500还可以包括图15中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种终端设备，但本申请不限于此，还可以是其他的设备。
图16是本申请实施例的终端设备的一示意图。如图16所示，该终端设备1600可以包括处理器1610和存储器1620；存储器1620存储有数据和程序，并耦合到处理器1610。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器1610可以被配置为执行程序而实现如第一方面的实施例所述的方法。例如，处理器1610可以被配置为进行如下的控制：终端设备接收网络设备发送的同步信号块(SSB)；所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系： intraFreqReselection；subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000123
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000124
和ssb-SubcarrierOffset。
再例如，处理器1610可以被配置为执行程序而实现如第二方面的实施例所述的方法。例如，处理器1610可以被配置为进行如下的控制：终端设备接收网络设备发送的第一同步信号块(SSB)；所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000125
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；所述终端设备根据所述第一同步信号块确定第一参数；所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
再例如，处理器1610可以被配置为执行程序而实现如第三方面的实施例所述的方法。例如，处理器1610可以被配置为进行如下的控制：终端设备接收网络设备发送的第一同步信号块(SSB)；所述终端设备根据所述第一同步信号块确定第二参数；所述终端设备根据第一因子和所述第二参数确定第一参数，所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，用于所述终端设备确定所述第一同步信号没有关联的SIB1；所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
如图16所示，该终端设备1600还可以包括：通信模块1630、输入单元1640、显示器1650、电源1660。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，终端设备1600也并不是必须要包括图16中所示的所有部件，上述部件并不是必需的；此外，终端设备1600还可以包括图16中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第一至三方面的实施例所述的系统信息接收方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第一至三方面的实施例所述的系统信息接收方法。
本申请实施例还提供一种计算机程序，其中当在网络设备中执行所述程序时，所述程序使得所述网络设备执行第六方面的实施例所述的系统信息发送方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得网络设备执行第六方面的实施例所述的系统信息发送方法。
本申请以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本申请还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述，但本领域技术人员应该清楚，这 些描述都是示例性的，并不是对本申请保护范围的限制。本领域技术人员可以根据本申请的精神和原理对本申请做出各种变型和修改，这些变型和修改也在本申请的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
1、一种系统信息接收方法，其中，所述方法包括：
终端设备接收网络设备发送的同步信号块(SSB)；
所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000126
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000127
和ssb-SubcarrierOffset。
2、根据附记1所述的方法，其中，所述至少一个比特通过指示第三参数指示所述SSB之间的QCL关系。
3、根据附记2所述的方法，其中，所述第三参数表征为Q或者表征为
Figure PCTCN2020084301-appb-000128
4、根据附记1所述的方法，其中，所述终端设备在选择或重选小区时假设intraFreqReselection设为notAllowed。
5、根据附记2所述的方法，其中，所述方法还包括：所述终端设备根据以下至少一项确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数和/或所述第三参数的取值范围；
所述同步信号块是否有关联的SIB1；
所述同步信号块的频域位置；
所述同步信号块所承载的信息。
6、根据附记5所述的方法，其中，所述终端设备根据以下至少一项确定所述同步信号块是否有关联的SIB1：
所述同步信号块的频域位置；
所述同步信号块所承载的信息。
7、根据附记6所述的方法，其中，所述终端设备根据所述同步信号块的频域位 置确定所述同步信号块是否有关联的SIB1，包括：
如果所述同步信号块位于非授权频段或者共享频段，则所述终端设备始终假设所述同步信号块有关联的SIB1；或者
如果所述同步信号块不在NR-U中定义的sync raster上，则所述同步信号块没有关联的SIB1；如果所述同步信号块在NR-U中定义的sync raster上，则所述同步信号块有关联的SIB1；或者
如果所述同步信号块不在Rel-15 NR中定义的sync raster上，则所述同步信号块没有关联的SIB1；如果所述同步信号块在Rel-15 NR中定义的sync raster上，则所述同步信号块有关联的SIB1。
8、根据附记6所述的方法，其中，所述终端设备根据所述同步信号块所承载的信息确定所述同步信号块是否有关联的SIB1，包括以下至少一项：
所述终端设备根据所述同步信号块所指示的k SSB的值确定所述同步信号块是否有关联的SIB1；
所述终端设备根据所述同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000129
确定所述同步信号块是否有关联的SIB1；
所述终端设备根据所述同步信号块所包含的物理广播信道的以下至少一个指示域确定所述同步信号块是否有关联的SIB1：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000130
pdcch-ConfigSIB1。
9、根据附记5所述的方法，其中，所述终端设备根据所述同步信号块是否有关联的SIB1确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数，包括：
如果所述同步信号块没有关联的SIB1，则确定所述同步信号块所包含的物理广播信道不指示所述第三参数；
如果所述同步信号块有关联的SIB1，则确定所述同步信号块所包含的物理广播信道指示所述第三参数。
10、根据附记5所述的方法，其中，所述终端设备根据所述同步信号块的频域位 置确定所述同步信号块所包含的物理广播信道是否指示了所述第三参数，包括：
如果所述同步信号块不在NR-U中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道不指示所述第三参数；如果所述同步信号块在NR-U中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道指示所述第三参数；或者
如果所述同步信号块不在Rel-15 NR中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道不指示所述第三参数；如果所述同步信号块在Rel-15 NR中定义的sync raster上，则确定所述同步信号块所包含的物理广播信道指示所述第三参数。
11、根据附记5所述的方法，其中，所述终端设备根据所述同步信号块是否有关联的SIB1确定所述第三参数的取值范围，包括：
如果所述同步信号块没有关联的SIB1，则确定所述第三参数的取值范围为第一范围；
如果所述同步信号块有关联的SIB1，则确定所述第三参数的取值范围为第二范围。
12、根据附记5所述的方法，其中，所述终端设备根据所述同步信号块的频域位置确定所述第三参数的取值范围，包括：
如果所述同步信号块不在NR-U中定义的sync raster上，则确定所述第三参数的取值范围为第一范围；如果所述同步信号块在NR-U中定义的sync raster上，则确定所述第三参数的取值范围为第二范围；或者
如果所述同步信号块不在Rel-15 NR中定义的sync raster上，则确定所述第三参数的取值范围为第一范围；如果所述同步信号块在Rel-15 NR中定义的sync raster上，则确定所述第三参数的取值范围为第二范围。
13、根据附记5所述的方法，其中，所述同步信号块所包含的物理广播信道所承载的信息是指所述同步信号块所包含的物理广播信道的所述至少一个指示域中可能用于指示所述第三参数的信息之外的信息。
14、根据附记5所述的方法，其中，在所述终端设备确定了所述第三参数的取值范围的情况下，所述方法还包括：
所述终端设备根据所述第三参数的取值范围确定用于指示所述第三参数的指示 域。
15、根据附记14所述的方法，其中，
如果所述第三参数的取值范围为第一范围，则所述终端设备确定用于指示所述第三参数的指示域为subCarrierSpacingCommon或intraFreqReselection；
如果所述第三参数的取值范围为第二范围，则所述终端设备确定用于指示所述第三参数的指示域为subCarrierSpacingCommon和intraFreqReselection。
16、一种系统信息接收方法，其中，所述方法包括：
终端设备接收网络设备发送的第一同步信号块(SSB)；所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000131
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；
所述终端设备根据所述第一同步信号块确定所述第一参数；所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；
所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
16.1、根据附记16所述的方法，其中，所述第一比特是ssb-SubcarrierOffset中的LSB。
17、根据附记16所述的方法，其中，所述第一参数表征为k SSB。
18、根据附记16所述的方法，其中，确定第一参数，包括：所述终端设备根据以下其中一种方式确定所述第一参数：
假设第一比特的值为0或者1；
假设所述第一参数的与所述第一比特对应的二进制位的值为0或者1；
仅根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
Figure PCTCN2020084301-appb-000132
中的除所述第一比特以外的比特确定所述第一参数；
根据所述第一同步信号块承载的除所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和
Figure PCTCN2020084301-appb-000133
中的比特以外的比特确定所述第一参数。
19、根据附记18所述的方法，其中，所述终端设备假设第一比特的值为0或者 1的情况下，或者，假设所述第一参数的与所述第一比特对应的二进制位的值为0或者1的情况下，确定第一参数还包括：
所述终端设备根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1，或者根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一参数的与所述第一比特对应的二进制位的值为0还是1。
20、根据附记18所述的方法，其中，确定第一参数之前，所述方法还包括：
所述终端设备确定所述第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000134
和/或ssb-SubcarrierOffset中的所述第一比特所指示的信息类型。
21、根据附记20所述的方法，其中，确定所述第一比特所指示的信息类型，包括：
所述终端设备根据所述第一同步信号块承载的除所述第一比特以外的比特确定所述第一比特所指示的信息类型；或者
所述终端设备根据所述第一同步信号块是否有关联的SIB1确定所述第一比特所指示的信息类型。
22、根据附记16所述的方法，其中，所述终端设备根据所述第一参数接收SIB1，包括：
所述终端设备根据所述第一参数和参考子载波间隔确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移；其中，所述参考子载波间隔为所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔。
所述终端设备根据所述偏移接收与所述第一同步信号块关联的SIB1。
23、根据附记22所述的方法，其中，所述终端设备进一步根据第二因子确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移。
24、根据附记22所述的方法，其中，所述偏移等于所述第一参数与所述第一参数指示的粒度的乘积，所述第一参数指示的粒度等于所述参考子载波间隔，或者，所述第一参数指示的粒度等于所述参考子载波间隔与第二因子的乘积。
25、根据附记22至24任一项所述的方法，其中，所述终端设备不期望所述第一参数的值不在用于确定所述CORESET的位置的范围内。
26、根据附记16所述的方法，其中，接收SIB1之前，所述方法还包括：
所述终端设备根据所述第一同步信号块是否有关联的SIB1和/或所述第一同步信 号块所关联的SIB1的类型，确定是否接收所述SIB1。
27、根据附记26所述的方法，其中，所述终端设备根据以下至少一项确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型：
所述第一同步信号块的频域位置；
所述第一同步信号块所承载的信息。
28、根据附记27所述的方法，其中，所述终端设备根据所述第一同步信号块的频域位置确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：
如果所述第一同步信号块位于非授权频段或者共享频段，则所述终端设备始终假设所述第一同步信号块有关联的SIB1，并根据所述第一同步信号块是否在NR-U中定义的sync raster上确定所述第一同步信号块所关联的SIB1的类型；或者
如果所述第一同步信号块不在NR-U中定义的sync raster上，则所述第一同步信号块没有关联的SIB1；如果所述第一同步信号块在NR-U中定义的sync raster上，则所述第一同步信号块有关联的SIB1；或者
如果所述第一同步信号块不在Rel-15 NR中定义的sync raster上，则所述第一同步信号块没有关联的SIB1；如果所述第一同步信号块在Rel-15 NR中定义的sync raster上，则所述第一同步信号块有关联的SIB1。
29、根据附记27所述的方法，其中，所述终端设备根据所述第一同步信号块所承载的信息确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括以下至少一项：
所述终端设备根据所述第一参数确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型；
所述终端设备根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000135
确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型；
所述终端设备根据所述第一同步信号块所包含的物理广播信道的以下至少一个指示域确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000136
pdcch-ConfigSIB1。
30、根据附记26至29任一项所述的方法，其中，在所述第一同步信号块没有关联的SIB1的情况下，所述终端设备不接收所述SIB1，所述方法还包括：
所述终端设备根据NR-U中定义的sync raster确定关联SIB1的第二同步信号块所在的频域位置或者没有关联SIB1的第一同步信号块的频率范围。
31、根据附记26至29任一项所述的方法，其中，在所述第一同步信号块有关联的SIB1的情况下，所述终端设备根据以下至少一项确定是否接收所述SIB1：
针对小区选择或小区重选，如果所述第一同步信号块所关联的SIB1的类型是第一类，则所述终端设备不接收所述第一同步信号块所关联的SIB1；
针对小区全局标识符上报(CGI report)，所述终端设备接收所述第一同步信号块所关联的SIB1。
32、一种系统信息接收方法，其中，所述方法包括：
终端设备接收网络设备发送的第一同步信号块(SSB)；
所述终端设备根据所述第一同步信号块确定第二参数；
所述终端设备根据第一因子和所述第二参数确定第一参数，所述第一参数用于所述终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于所述终端设备确定所述第一同步信号没有关联的SIB1；
所述终端设备根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
32.1、根据附记32所述的方法，其中，所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
Figure PCTCN2020084301-appb-000137
中的第一比特用于指示SSB之间的QCL关系和/或不用于指示所述第二参数。
32.2、根据附记32.1所述的方法，其中，所述第一比特是ssb-SubcarrierOffset中的LSB。
33、根据附记32所述的方法，其中，所述第一参数或所述第二参数表征为k SSB。
34、根据附记32.1所述的方法，其中，确定第二参数包括：所述终端设备根据以下其中一种方式确定所述第二参数：
假设第一比特的值为0或者1；
假设所述第二参数的与所述第一比特对应的二进制位的值为0或者1；
仅根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
Figure PCTCN2020084301-appb-000138
和中的除所述第一比特以外的比特确定所述第二参数；
根据所述第一同步信号块承载的除所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和
Figure PCTCN2020084301-appb-000139
中的比特以外的比特确定所述第二参数。
35、根据附记34所述的方法，其中，所述终端设备假设所述第一比特的值为0或者1的情况下，或者，假设所述第二参数的与所述第一比特对应的二进制位的值为0或者1的情况下，确定第二参数还包括：
所述终端设备根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1，或者，根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第二参数的与所述第一比特对应的二进制位的值为0还是1。
36、根据附记34所述的方法，其中，确定第二参数之前，所述方法还包括：
所述终端设备确定所述第一同步信号块所包含的物理广播信道的负载中的
Figure PCTCN2020084301-appb-000140
和/或ssb-SubcarrierOffset中的第一比特所指示的信息类型。
37、根据附记36所述的方法，其中，确定所述第一比特所指示的信息类型，包括：
所述终端设备根据所述第一同步信号块承载的除所述第一比特以外的比特确定所述第一比特所指示的信息类型；或者
所述终端设备根据所述第一同步信号块是否有关联的SIB1确定所述第一比特所指示的信息类型。
38、根据附记32.1所述的方法，其中，所述第一因子的值为1/2 N，或者2 N，N为所述和第一比特的个数。
39、根据附记32所述的方法，其中，所述第一参数等于所述第二参数与所述第一因子的乘积，或者，所述第一参数等于对所述第二参数与所述第一因子的乘积进行向下取整后得到的值，或者，所述第一参数等于所述第二参数除以所述第一因子的商， 或者，所述第一参数等于对所述第二参数除以所述第一因子的商下取整后得到的值。
40、根据附记32所述的方法，其中，所述终端设备根据所述第一参数接收所述SIB1，包括：
所述终端设备根据所述第一参数和参考子载波间隔确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移；其中，所述参考子载波间隔为所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔
所述终端设备根据所述偏移接收所述SIB1。
41、根据附记40所述的方法，其中，所述终端设备进一步根据所述第一参数和第二因子确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移。
42、根据附记40所述的方法，其中，所述偏移等于所述第一参数与所述第一参数指示的粒度的乘积，所述第一参数指示的粒度等于参考子载波间隔，或者，所述第一参数指示的粒度等于参考子载波间隔与第二因子的乘积。
43、根据附记40至42任一项所述的方法，其中，所述终端设备不期望所述第一参数的值不在用于确定所述CORESET的位置的范围内。
44、根据附记32所述的方法，其中，接收SIB1之前，所述方法还包括：
所述终端设备根据所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，确定是否接收所述SIB1。
45、根据附记44所述的方法，其中，所述终端设备根据以下至少一项确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型：
所述第一同步信号块的频域位置；
所述第一同步信号块所承载的信息。
46、根据附记45所述的方法，其中，所述终端设备根据所述第一同步信号块的频域位置确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括：
如果所述第一同步信号块位于非授权频段或者共享频段，则所述终端设备始终假设所述第一同步信号块有关联的SIB1，并根据所述第一同步信号块是否在NR-U中定义的sync raster上确定所述第一同步信号块所关联的SIB1的类型；或者
如果所述第一同步信号块不在NR-U中定义的sync raster上，则所述第一同步信号块没有关联的SIB1；如果所述第一同步信号块在NR-U中定义的sync raster上，则 所述第一同步信号块有关联的SIB1；或者
如果所述第一同步信号块不在Rel-15 NR中定义的sync raster上，则所述第一同步信号块没有关联的SIB1；如果所述第一同步信号块在Rel-15 NR中定义的sync raster上，则所述第一同步信号块有关联的SIB1。
47、根据附记45所述的方法，其中，所述终端设备根据所述第一同步信号块所承载的信息确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型，包括以下至少一项：
所述终端设备根据所述第一参数确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型；
所述终端设备根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的MSB和
Figure PCTCN2020084301-appb-000141
确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型；
所述终端设备根据所述第一同步信号块所包含的物理广播信道的以下至少一个指示域确定所述第一同步信号块是否有关联的SIB1和/或所述第一同步信号块所关联的SIB1的类型：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000142
pdcch-ConfigSIB1。
48、根据附记44至47任一项所述的方法，其中，在所述第一同步信号块没有关联的SIB1的情况下，所述终端设备不接收所述SIB1，所述方法还包括：
所述终端设备根据NR-U中定义的sync raster确定关联SIB1的第二同步信号块所在的频域位置或者没有关联SIB1的第一同步信号块的频率范围。
49、根据附记44至47任一项所述的方法，其中，在所述第一同步信号块有关联的SIB1的情况下，所述终端设备根据以下至少一项确定是否接收所述SIB1：
针对小区选择或小区重选，如果所述第一同步信号块所关联的SIB1的类型是第一类，则所述终端设备不接收所述第一同步信号块所关联的SIB1；
针对小区全局标识符上报(CGI report)，所述终端设备接收所述第一同步信号块所关联的SIB1。
50、一种系统信息发送方法，其中，所述方法包括：
网络设备向终端设备发送同步信号块，所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特指示了SSB之间的QCL关系：
intraFreqReselection；
subCarrierSpacingCommon；
Figure PCTCN2020084301-appb-000143
pdcch-ConfigSIB1；
Figure PCTCN2020084301-appb-000144
和ssb-SubcarrierOffset。
51、一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记1至49任一项所述的方法。
52、一种网络设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记50所述的方法。
53、一种通信系统，包括如附记51所述的终端设备，或者包括如附记51所述终端设备和附记52所述的网络设备。

Claims (20)

  1. 一种系统信息接收装置，配置于终端设备，其中，所述装置包括：
    第一接收单元，其接收网络设备发送的第一同步信号块(SSB)，所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
    Figure PCTCN2020084301-appb-100001
    中的第一比特用于指示SSB之间的QCL关系和/或不用于指示第一参数；
    第一确定单元，其根据所述第一同步信号块确定第一参数，所述第一参数用于终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于终端设备确定所述第一同步信号没有关联的SIB1；
    第二接收单元，其根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
  2. 根据权利要求1所述的装置，其中，所述第一比特是ssb-SubcarrierOffset中的LSB。
  3. 根据权利要求1所述的装置，其中，所述第一确定单元确定第一参数，包括：所述第一确定单元根据以下其中一种方式确定所述第一参数：
    假设第一比特的值为0或者1；
    假设所述第一参数的与所述第一比特对应的二进制位的值为0或者1；
    仅根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
    Figure PCTCN2020084301-appb-100002
    中的除所述第一比特以外的比特确定所述第一参数；
    根据所述第一同步信号块承载的除所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和
    Figure PCTCN2020084301-appb-100003
    中的比特以外的信息确定所述第一参数。
  4. 根据权利要求3所述的装置，其中，所述第一确定单元假设所述第一比特的值为0或者1的情况下，或者，假设所述第一参数的与所述第一比特对应的二进制位的值为0或者1的情况下，所述第一确定单元确定第一参数还包括：
    所述第一确定单元根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1，或者，根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一参数的与所述第一比特对应的二进制位的值为0还是1。
  5. 根据权利要求1所述的装置，其中，所述装置还包括：
    第二确定单元，其在所述第一确定单元确定所述第一参数之前，确定所述第一同步信号块所包含的物理广播信道的负载中的
    Figure PCTCN2020084301-appb-100004
    和/或ssb-SubcarrierOffset中的第一比特所指示的信息类型。
  6. 根据权利要求1所述的装置，其中，所述第二接收单元根据所述第一参数接收SIB1，包括：
    所述接收单元根据所述第一参数和参考子载波间隔确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移，根据所述偏移接收与所述第一同步信号块关联的SIB1；
    其中，所述参考子载波间隔为所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔。
  7. 根据权利要求6所述的装置，其中，所述第二接收单元进一步根据第二因子确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移。
  8. 一种系统信息接收装置，配置于终端设备，其中，所述装置包括：
    第一接收单元，其接收网络设备发送的第一同步信号块(SSB)；
    第一确定单元，其根据所述第一同步信号块确定第二参数；
    第二确定单元，其根据第一因子和所述第二参数确定第一参数，所述第一参数用于终端设备确定用于监听或接收PDCCH的CORESET的位置，所述PDCCH用于调度承载所述第一同步信号块关联的SIB1的PDSCH，或者，所述第一参数用于终端设备确定所述第一同步信号没有关联的SIB1；
    第二接收单元，其根据所述第一参数接收与所述第一同步信号块关联的SIB1或第二同步信号块。
  9. 根据权利要求8所述的装置，其中，所述第一参数或所述第二参数表征为k SSB。
  10. 根据权利要求8所述的装置，其中，所述第一同步信号块在非授权或共享频段发送，和/或，所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中和/或
    Figure PCTCN2020084301-appb-100005
    中的第一比特用于指示SSB之间的QCL关系和/或不用于指示所述第二参数。
  11. 根据权利要求10所述的装置，其中，所述第一比特是ssb-SubcarrierOffset中的LSB。
  12. 根据权利要求10所述的装置，其中，所述第一确定单元确定第二参数包括：所述第一确定单元根据以下其中一种方式确定所述第二参数：
    假设第一比特的值为0或者1；
    假设所述第二参数的与所述第一比特对应的二进制位的值为0或者1；
    仅根据所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和/或
    Figure PCTCN2020084301-appb-100006
    和中的除所述第一比特以外的比特确定所述第二参数；
    根据所述第一同步信号块承载的除所述第一同步信号块所包含的物理广播信道的负载中的ssb-SubcarrierOffset中的和
    Figure PCTCN2020084301-appb-100007
    中的比特以外的信息确定所述第二参数。
  13. 根据权利要求12所述的装置，其中，所述第一确定单元假设所述第一比特的值为0或者1的情况下，或者，假设所述第二参数的与所述第一比特对应的二进制位的值为0或者1的情况下，所述第一确定单元确定第二参数还包括：
    所述第一确定单元根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第一比特的值是0还是1，或者，根据所述第一同步信号块承载的除所述第一比特以外的信息确定所述第二参数的与所述第一比特对应的二进制位的值为0还是1。
  14. 根据权利要求12所述的装置，其中，所述装置还包括：
    第三确定单元，其在所述第一确定单元确定所述第二参数之前，确定所述第一同步信号块所包含的物理广播信道的负载中的域
    Figure PCTCN2020084301-appb-100008
    和/或ssb-SubcarrierOffset中的第一比特所指示的信息类型。
  15. 根据权利要求10所述的装置，其中，所述第一因子的值为1/2 N或者2 N，N为所述第一比特的个数。
  16. 根据权利要求8所述的装置，其中，所述第一参数等于所述第二参数与所述第一因子的乘积，或者，所述第一参数等于对所述第二参数与所述第一因子的乘积进行向下取整后得到的值，或者，所述第一参数等于所述第二参数除以所述第一因子的商，或者，所述第一参数等于对所述第二参数除以所述第一因子的商下取整后得到的值。
  17. 根据权利要求8所述的装置，其中，所述第二接收单元根据所述第一参数接收所述SIB1，包括：
    所述第二接收单元根据所述第一参数和参考子载波间隔确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移，根据所述偏移接收所述SIB1；
    其中，所述参考子载波间隔为所述第一同步信号块或所述CORESET的子载波间隔，或者预定义的子载波间隔。
  18. 根据权利要求17所述的装置，其中，所述第二接收单元进一步根据第二因子确定所述第一同步信号块与公共资源块网格(CRB grid)之间的偏移。
  19. 一种系统信息接收装置，配置于终端设备，其中，所述装置包括：
    接收单元，其接收网络设备发送的同步信号块(SSB)；
    所述同步信号块所包含的物理广播信道的负载(PBCH payload)中的以下至少一个指示域中的至少一个比特用于指示SSB之间的QCL关系：
    intraFreqReselection；
    subCarrierSpacingCommon；
    Figure PCTCN2020084301-appb-100009
    pdcch-ConfigSIB1；
    Figure PCTCN2020084301-appb-100010
    和ssb-SubcarrierOffset。
  20. 根据权利要求19所述的装置，其中，所述终端设备在选择或重选小区时假设intraFreqReselection设为notAllowed。
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