WO2024037178A1 - 一种通信方法和通信装置 - Google Patents

一种通信方法和通信装置 Download PDF

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Publication number
WO2024037178A1
WO2024037178A1 PCT/CN2023/101650 CN2023101650W WO2024037178A1 WO 2024037178 A1 WO2024037178 A1 WO 2024037178A1 CN 2023101650 W CN2023101650 W CN 2023101650W WO 2024037178 A1 WO2024037178 A1 WO 2024037178A1
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WIPO (PCT)
Prior art keywords
offset
ssb
search space
information
scheduling information
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PCT/CN2023/101650
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English (en)
French (fr)
Inventor
石蒙
廖树日
窦圣跃
白仲金
魏璟鑫
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华为技术有限公司
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Publication of WO2024037178A1 publication Critical patent/WO2024037178A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present application relate to the field of communication, and more specifically, to a communication method and a communication device.
  • satellites have the advantage of not being easily affected by natural disasters or external damage
  • research is currently underway on using satellites as network equipment (such as base stations) for mobile communication systems to provide communication services in some areas such as oceans and forests.
  • satellites move faster relative to the ground and their signals propagate farther, making the signal path loss of satellites as network equipment greater.
  • the coverage and service time of a single satellite and each beam under a single satellite are limited. Therefore, this communication scenario places higher requirements on the access delay of the terminal.
  • This application provides a communication method and communication device, which can reduce the access delay of the terminal.
  • this application provides a communication method.
  • the method can be executed by a terminal or by a module or unit in the terminal.
  • a terminal For convenience of description, it will be collectively referred to as the terminal below.
  • the method includes: the terminal receives a first synchronization signal/physical broadcast channel block (SS/PBCH block or SSB), the first SSB includes first configuration information, and the first configuration information Used to determine the time domain position of the first search space of the first scheduling information, the first scheduling information is used to schedule the first system information block (system information block, SIB), the first SIB is the system information block 1 ( system information block 1, SIB1), the first SIB is used to carry information related to random access of the terminal; the terminal determines the first search space according to the first configuration information the time domain position; the terminal detects the first scheduling information at the time domain position of the first search space.
  • SIB system information block
  • Information related to random access of the terminal can also be described as “information other than SIB1 for the terminal to perform random access.”
  • the SSB only carries the configuration information of the time domain location of the search space of the scheduling information of SIB1, and the configuration information of the time domain location of the search space of the scheduling information of other SIBs used to carry information related to random access of the terminal.
  • the time domain position of the search space of the scheduling information of the first SIB can be determined based on the first configuration information carried by the first SSB, and the search space determination of the scheduling information of the first SIB can be unbundled from SIB1, that is, there is no need to Only after obtaining SIB1 can the scheduling information of the first SIB and the first SIB be monitored (monitored) and received, thereby helping to reduce the access delay of the terminal.
  • the terminal determines the time domain position of the first search space according to the first configuration information, including: the terminal determines the time domain position of the first search space according to the first configuration information, Obtain the first offset and the first interval.
  • the first offset is the offset of the control resource set (CORESET) of the first SIB relative to the starting position of the system frame where the first SSB is located.
  • the first interval is the interval between the time domain positions of the CORESET of the first SIB corresponding to two adjacent SSBs; the terminal determines the first interval according to the first offset and the first interval.
  • Temporal location in the search space including: the terminal determines the time domain position of the first search space according to the first configuration information, Obtain the first offset and the first interval.
  • the first offset is the offset of the control resource set (CORESET) of the first SIB relative to the starting position of the system frame where the first SSB is located.
  • the first interval is the interval between the time domain positions of the CORESET of the first SIB corresponding to two adjacent
  • the terminal can obtain the first offset and the first interval according to the first configuration information carried by the first SSB, thereby determining the time domain position of the search space of the first scheduling information, which can realize that the scheduling information of the first SIB can be
  • the search space is determined to be unbound from SIB1, thus helping to reduce the terminal’s access delay.
  • the first SSB further includes the first SSB index, information used to determine the subcarrier spacing, and the number of the system frame where the first SSB is located; the terminal determines the time of the first search space based on the first offset and the first spacing. Domain position, including: the terminal determines the subcarrier spacing according to the first offset, the first interval, the index of the first SSB, and the number of the system frame where the first SSB is located. , determine the time domain position of the first search space, and the starting time slot of the time domain position of the first search space is the first time slot of the first system frame,
  • the number of the first time slot satisfies:
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • O 1 is the first offset
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB, is the maximum number of candidate SSBs in a half-frame
  • M 1 is the first interval
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the terminal can determine the time domain position of the search space of the first scheduling information through formula calculation based on the information carried by the first SSB, the first offset and the first interval, so that the first SIB can be
  • the search space of scheduling information is determined and unbound from SIB1, thus helping to reduce the access delay of the terminal.
  • the processing can ensure that: when the number of SSBs exceeds the maximum number of candidate SSBs in a half-frame and needs to be carried in multiple system frames, the relative positions of the SSB, SIB1, and the first SIB are fixed, which helps to avoid SIB1 associated with the first SSB. And the first SIB is sent before the first SSB occurs.
  • the first offset and the first interval belong to the first table; or, the first offset and the first interval The interval does not belong to the first table; wherein, the first table is the table where the second offset and the second interval are located, and the second offset is the control resource set 0 corresponding to the first SSB. , CORESET0) relative to the offset of the starting position of the system frame where the first SSB is located, the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, and the CORESET0 corresponds to SIB1 CORESET.
  • the first offset and the first interval may belong to the first table.
  • the first offset and the first interval may not belong to the first table.
  • (the first offset and the first interval) are the same as (second offset, second interval) belong to different parameter tables.
  • the scheduling information of the first SIB and the scheduling information of SIB1 can be sent in adjacent time slots, and the probability of the terminal facing beam switching is low, which helps to improve demodulation performance.
  • the terminal determines the time domain position of the first search space according to the first configuration information, including: the terminal determines the time domain position of the first search space according to the first configuration information.
  • the first configuration information is used to obtain a third offset, which is an offset between the starting time slot of the first search space and the starting time slot of the second search space of the second scheduling information.
  • the second scheduling information is used to schedule the SIB1; the terminal determines the time domain position of the first search space according to the third offset.
  • the terminal can obtain the third offset according to the first configuration information carried by the first SSB, thereby determining the time domain position of the search space of the first scheduling information, which can determine the search space of the first SIB scheduling information.
  • Unbinding from SIB1 helps reduce terminal access delay.
  • the time domain position of the first search space is The starting time slot is the first time slot of the first system frame:
  • n 1 n 0 +Offset 1 ;
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • n 0 is the number of the starting time slot of the second search space
  • Offset 1 is the third offset
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the terminal can determine the time domain position of the search space of the first scheduling information based on the information carried by the first SSB and the third offset through formula calculation, and can realize the search of the scheduling information of the first SIB. Space determination is unbound from SIB1, thus helping to reduce terminal access delays.
  • the third offset belongs to the first table; or, the third offset does not belong to the first table; wherein, the third offset A table is a table in which the second offset and the second interval are located.
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located.
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, and the CORESET0 is the CORESET corresponding to SIB1.
  • the third offset may belong to the first table.
  • the third offset may not belong to the first table.
  • (third offset) and (second offset, second interval ) belong to different parameter tables.
  • the third offset is 1 time slot.
  • the scheduling information of the first SIB and the scheduling information of SIB1 can be sent on adjacent time slots, and the probability of the terminal facing beam switching is low, which helps to improve demodulation performance.
  • the time domain position of the first search space is the same as the time domain position of the second search space of the second scheduling information, and the second The scheduling information is used to schedule the SIB1;
  • the terminal detects the first scheduling information at the time domain position of the first search space, including: the terminal uses a first scrambling sequence to The first scheduling information is detected at a time domain position, the first scheduling information is scrambled using the first scrambling sequence, and the first scrambling sequence and the second scrambling information use The sequence is different.
  • the search space of the scheduling information of the first SIB can be associated with the search space of the scheduling information of SIB1, and the scheduling information of the first SIB and the scheduling information of SIB1 can be distinguished through different scrambling sequences. The same can be done
  • the search space determination of the scheduling information of the first SIB is unbound from SIB1, thereby helping to reduce the access delay of the terminal.
  • the number n 0 of the starting time slot of the second search space satisfies:
  • O is the second offset
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located
  • is used to determine the subcarrier spacing.
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB
  • M is the second interval
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, is the number of time slots in a system frame, Indicates rounding down
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the processing can ensure that: when the number of SSBs exceeds the maximum number of candidate SSBs in a half-frame and needs to be carried in multiple system frames, the relative positions of the SSB, SIB1, and the first SIB are fixed, which helps to avoid SIB1 associated with the first SSB. And the first SIB is sent before the first SSB occurs.
  • the first configuration information is the configuration information of the time domain position of the second search space of the second scheduling information, and the second scheduling information used to schedule the SIB1; or, the first configuration information is the configuration information of the time domain position of the first search space.
  • the first configuration information is the configuration information of the time domain position of the second search space of the second scheduling information
  • modifications to the first SSB can be reduced.
  • the first configuration information is the configuration information of the time domain position of the first search space (that is, the first configuration information is added to the first SSB)
  • the design of the parameter table is relatively simple, and the first scheduling information and the second scheduling information
  • the configuration information of the search space is independent of each other, which can make the configuration more flexible.
  • the first SIB includes system information block 19 (SIB19), and the SIB19 is used to carry information related to satellite ephemeris Information.
  • SIB19 system information block 19
  • the information related to satellite ephemeris includes at least one of the following information: ephemeris, timing advance related parameters, valid time, or reference time, etc.
  • this application provides a communication method.
  • the method can be executed by a network device or by a module or unit in the network device.
  • a network device For convenience of description, it will be collectively referred to as a network device below.
  • the method includes: the network device sends a first SSB, the first SSB includes first configuration information, the first configuration information is used to determine the time domain position of the first search space of the first scheduling information, the first The scheduling information is used to schedule the first SIB, the first SIB is an information block other than SIB1, and the first SIB is used to carry information related to random access of the terminal; the network device is in the first The first scheduling information is sent at a time domain position in the search space.
  • the time domain position of the search space of the scheduling information of the first SIB can be determined based on the first configuration information carried by the first SSB, and the search space determination of the scheduling information of the first SIB can be unbundled from SIB1, that is, there is no need to Only after obtaining SIB1 can the scheduling information of the first SIB and the first SIB be monitored and received, thereby helping to reduce the access delay of the terminal.
  • the first configuration information is used to obtain a first offset and a first interval, where the first offset is the CORESET of the first SIB relative to the The offset of the starting position of the system frame where the first SSB is located, and the first interval is the interval between the time domain positions of the CORESET of the first SIB corresponding to two adjacent SSBs.
  • the terminal can obtain the first offset and the first interval according to the first configuration information carried by the first SSB, thereby determining the time domain position of the search space of the first scheduling information, and achieving the scheduling of the first SIB.
  • the information search space is determined and unbound from SIB1, thus helping to reduce the terminal’s access delay.
  • the first SSB further includes an index of the first SSB, information used to determine the subcarrier spacing, and the first SSB The number of the system frame in which it is located, and the starting time slot of the time domain position of the first search space is the first time slot of the first system frame,
  • the number of the first time slot satisfies:
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • O 1 is the first offset
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB, is the maximum number of candidate SSBs in a half-frame
  • M 1 is the first interval
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the terminal can determine the time domain position of the search space of the first scheduling information by formula calculation based on the information carried by the first SSB, the first offset and the first interval, so that the first SIB can be
  • the search space of the scheduling information is determined and unbound from SIB1, thereby helping to reduce the terminal’s access delay.
  • the processing can ensure that: when the number of SSBs exceeds the maximum number of candidate SSBs in a half-frame and needs to be carried in multiple system frames, the relative positions of the SSB, SIB1, and the first SIB are fixed, which helps to avoid SIB1 associated with the first SSB. And the first SIB is sent before the first SSB occurs.
  • the first offset and the first interval belong to the first table; or, the first offset and the first interval The interval does not belong to the first table; wherein, the first table is the table where the second offset and the second interval are located, and the second offset is where the CORESET0 corresponding to the first SSB is located relative to the first SSB.
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs.
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the first offset and the first interval may belong to the first table.
  • the first offset and the first interval may not belong to the first table.
  • (the first offset and the first interval) are the same as (second offset, second interval) belong to different parameter tables.
  • the scheduling information of the first SIB and the scheduling information of SIB1 can be sent in adjacent time slots, and the probability of the terminal facing beam switching is low, which helps to improve demodulation performance.
  • the first configuration information is used to obtain a third offset
  • the third offset is the starting point of the first search space.
  • the terminal can obtain the third offset according to the first configuration information carried by the first SSB, thereby determining the time domain position of the search space of the first scheduling information. It can be achieved that the search space of the scheduling information of the first SIB can be Determine to unbind from SIB1, which will help reduce the terminal's access delay.
  • the starting time slot of the time domain position of the first search space is the first time slot of the first system frame:
  • n 1 n 0 +Offset 1 ;
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • n 0 is the number of the starting time slot of the second search space
  • Offset 1 is the third offset
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the terminal can determine the time domain position of the search space of the first scheduling information based on the information carried by the first SSB and the third offset through formula calculation, which can realize that the scheduling information of the first SIB can be
  • the search space is determined and unbound from SIB1, thus helping to reduce the terminal’s access delay.
  • the third offset belongs to the first table; or, the third offset does not belong to the first table; wherein, the third offset A table is a table in which the second offset and the second interval are located.
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located.
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, and the CORESET0 is the CORESET corresponding to SIB1.
  • the third offset may belong to the first table.
  • the third offset may not belong to the first table.
  • (third offset) and (second offset, second interval ) belong to different parameter tables.
  • the third offset is 1 time slot.
  • the scheduling information of the first SIB and the scheduling information of SIB1 can be sent in adjacent time slots, and the probability of the terminal facing beam switching is low, which helps to improve demodulation performance.
  • the time domain position of the first search space is the same as the time domain position of the second search space of the second scheduling information
  • the second The scheduling information is used to schedule the SIB1
  • the first scheduling information is scrambled using the first scrambling sequence
  • the first scrambling sequence is different from the second scrambling sequence used by the second scheduling information
  • the search space of the scheduling information of the first SIB can be associated with the search space of the scheduling information of SIB1, and the scheduling information of the first SIB and the scheduling information of SIB1 can be distinguished through different scrambling sequences. The same can be done
  • the search space determination of the scheduling information of the first SIB is unbound from SIB1, thereby helping to reduce the access delay of the terminal.
  • the number n 0 of the starting time slot of the second search space satisfies:
  • O is the second offset
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located
  • is used to determine the subcarrier spacing.
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB
  • M is the second interval
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, is the number of time slots in a system frame, Indicates rounding down
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the processing can ensure that: when the number of SSBs exceeds the maximum number of candidate SSBs in a half-frame and needs to be carried in multiple system frames, the relative positions of the SSB, SIB1, and the first SIB are fixed, which helps to avoid SIB1 associated with the first SSB. And the first SIB is sent before the first SSB occurs.
  • the first configuration information is the configuration information of the time domain position of the second search space of the second scheduling information, and the second scheduling information used to schedule the SIB1; or, the first configuration information is the configuration information of the time domain position of the first search space.
  • the first configuration information is the configuration information of the time domain position of the second search space of the second scheduling information
  • modifications to the first SSB can be reduced.
  • the first configuration information is the configuration information of the time domain position of the first search space (that is, the first configuration information is added to the first SSB)
  • the design of the parameter table is relatively simple, and the first scheduling information and the second scheduling information
  • the configuration information of the search space is independent of each other, which can make the configuration more flexible.
  • the first SIB includes SIB19, and the SIB19 is used to carry information related to satellite ephemeris.
  • the information related to satellite ephemeris includes at least one of the following information: ephemeris, timing advance related parameters, valid time, or reference time, etc.
  • a communication device which is used to perform the method provided by any of the above aspects or its implementation.
  • the device may include units and/or modules, such as a processing unit and/or a communication unit, for executing the method provided by any of the above aspects or implementations thereof.
  • the device is a terminal and/or a network device.
  • the communication unit may be a transceiver, or an input/output interface, or a communication interface; the processing unit may be at least one processor.
  • the transceiver is a transceiver circuit.
  • the input/output interface is an input/output circuit.
  • the device is a chip, chip system or circuit used in terminals and/or network equipment.
  • the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pipe on the chip, chip system or circuit. pins or related circuits, etc.; the processing unit may be at least one processor, processing circuit or logic circuit, etc.
  • a communication device which device includes: a memory for storing programs; at least one processor for executing computer programs or instructions stored in the memory to execute any of the above aspects or provided by its implementation. method.
  • the device is a terminal and/or a network device.
  • the device is a chip, chip system or circuit used in terminals and/or network equipment.
  • a communication device in a fifth aspect, includes: at least one processor and a communication interface.
  • the at least one processor Used to obtain computer programs or instructions stored in the memory through the communication interface to execute any of the above aspects or the method provided by its implementation.
  • the communication interface can be implemented by hardware or software.
  • the device further includes the memory.
  • a sixth aspect provides a processor for executing the methods provided in the above aspects.
  • processor output, reception, input and other operations can be understood as processor output, reception, input and other operations.
  • transmitting and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.
  • a computer-readable storage medium stores program code for device execution.
  • the program code includes a method for executing any of the above aspects or the method provided by its implementation.
  • a computer program product containing instructions is provided.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute the method provided by any of the above aspects or its implementation.
  • a chip in a ninth aspect, includes a processor and a communication interface.
  • the processor reads instructions stored in the memory through the communication interface and executes the method provided by any of the above aspects or its implementation.
  • the communication interface can be implemented by hardware or software.
  • the chip also includes a memory, in which computer programs or instructions are stored.
  • the processor is used to execute the computer programs or instructions stored in the memory.
  • the processor is used to execute Methods provided by any of the above aspects or their implementations.
  • a communication system including the above terminal and/or network device.
  • Figure 1 is a schematic diagram of a communication system to which embodiments of the present application can be applied.
  • Figure 2 is a schematic diagram of another communication system to which embodiments of the present application can be applied.
  • Figure 3 is a schematic diagram of a satellite communication scenario to which embodiments of the present application can be applied.
  • Figure 4 is a schematic flow chart of the communication method 400 provided by this application.
  • Figure 5 is an example of the communication method provided by this application.
  • Figure 6 is a schematic diagram of the time domain patterns of SSB, SIB1 and SIB19.
  • Figure 7 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • Figure 8 is another structural schematic diagram of a device provided by an embodiment of the present application.
  • for indicating” or “instructing” may include direct indicating and indirect indicating, or “for indicating” or “instructing” may indicate explicitly and/or implicitly.
  • indicating information I when describing certain information as indicating information I, it may include that the information directly indicates I or indirectly indicates I, but it does not mean that the information must contain I.
  • an implicit indication may be based on the location and/or resources used for transmission; an explicit indication may be based on one or more parameters, and/or one or more indexes, and/or one or more bits it represents. model.
  • the first, second, third, fourth and various numerical numbers are only for convenience of description and are not used to limit the scope of the embodiments of the present application. For example, distinguish different fields, different information, etc.
  • Pre-definition can be achieved by pre-saving corresponding codes, tables, or other methods that can be used to indicate relevant information in the device.
  • This application does not limit the specific implementation method.
  • "saving” may refer to saving in one or more memories.
  • the type of memory can be any form of storage medium, and this application is not limited thereto.
  • the "protocol” involved in the embodiments of this application may refer to standard protocols in the communication field, which may include, for example, long term evolution (LTE) protocols, new radio (NR) protocols, and applications in future communication systems. related agreements, this application does not limit this.
  • LTE long term evolution
  • NR new radio
  • At least one means one or more, and “plurality” means two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an “or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of a, b and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a , b and c.
  • a, b and c can be single or multiple respectively.
  • network element A sending messages, information or data to network element B, and network element B receiving messages, information or data from network element A are intended to illustrate the messages, information or data. It is to be sent to which network element, and it does not limit whether they are sent directly or indirectly through other network elements.
  • Embodiments of the present application can be applied to various communication systems.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • PLMN public land mobile network
  • 5th generation, 5G fifth generation
  • 6th generation, 6G sixth generation
  • the 5G system in this application includes a non-standalone (NSA) 5G mobile communication system or a standalone (SA) 5G mobile communication system.
  • NSA non-standalone
  • SA standalone
  • Embodiments of the present application can also be applied to non-terrestrial network (NTN) communication systems such as satellite communication systems.
  • NTN non-terrestrial network
  • Embodiments of the present application can also be applied to device-to-device (D2D) communication systems, sidelink (SL) communication systems, machine-to-machine (M2M) communication systems, and machine-type communications (machine type communication, MTC) system, Internet of things (IoT) communication system, vehicle to everything (V2X) communication system, unmanned aerial vehicle (UAV) communication system or other communication systems .
  • D2D device-to-device
  • SL sidelink
  • M2M machine-to-machine
  • MTC machine-type communications
  • IoT Internet of things
  • V2X vehicle to everything
  • UAV unmanned aerial vehicle
  • FIGS. 1 and 2 illustrate communication systems to which embodiments of the present application may be applied.
  • Figure 1 is a schematic diagram of a communication system to which embodiments of the present application can be applied.
  • the communication system may include at least one network device (110a, 110b, 110c in Figure 1), and may also include at least one terminal (120a-120g in Figure 1).
  • the terminal can be mobile or fixed.
  • Each network device can provide communications coverage for a specific geographic area and can communicate with terminals located within that coverage area.
  • Network devices, network devices and terminals, and terminals can be connected to each other in a wired or wireless manner.
  • Figure 1 is only a schematic diagram.
  • the communication system may also include other devices, such as wireless relay devices and wireless backhaul devices.
  • Figure 2 is a schematic diagram of another communication system to which embodiments of the present application can be applied.
  • Embodiments of the present application are applicable to a communication system that integrates a terrestrial communication system and a satellite communication system.
  • This communication system may also be called a non-terrestrial network (non-terrestrial network, NTN) communication system.
  • NTN non-terrestrial network
  • the terrestrial communication system can be, for example, an LTE system, a universal mobile telecommunications system (UMTS), a 5G system or an NR system, or a communication system for the next development of the 5G system, etc., and is not limited here.
  • satellite communication systems have wider coverage than traditional communication systems and can overcome natural geographical obstacles such as oceans, deserts, and mountains.
  • satellite communication systems can be used as an effective supplement to traditional communication systems.
  • satellite communication systems can be divided into the following three types: high orbit (geostationary earth orbit, GEO) satellite communication system, medium orbit (medium earth orbit, MEO) satellite communication system, and low earth orbit (low earth orbit, LEO) satellite communication system.
  • GEO geostationary earth orbit
  • MEO medium orbit
  • LEO low earth orbit
  • the GEO satellite communication system can also be called a geosynchronous orbit satellite system.
  • GEO satellites are generally called geostationary satellites. Their orbital altitude can be 35,786 kilometers (km). Their main advantages are that they are relatively stationary to the ground and provide a large coverage area. The shortcomings of GEO satellites are also relatively prominent. For example, the distance from the earth is too large and they require a relatively long distance. Large-diameter antennas have a large transmission delay of about 0.5 seconds, which cannot meet the needs of real-time services. Orbital resources are relatively tight, the launch cost is high and they cannot provide coverage for the polar regions. The orbital altitude of MEO satellites is between 2000 and 35786km. Global coverage can be achieved using a relatively small number of satellites.
  • LEO satellites have lower orbital altitudes than MEO and GEO, have smaller data propagation delays, smaller power losses, and relatively lower launch costs. Therefore, LEO satellite communication systems have made great progress in recent years.
  • NTN has different channel characteristics (for example, large transmission delay, Doppler frequency deviation, etc.).
  • the round-trip delay of the GEO satellite communication system is 238 to 270 milliseconds (ms)
  • the round-trip delay of the LEO satellite communication system is 8 ms to 20 ms.
  • the working modes of satellites can be divided into transparent mode and regenerative mode.
  • the satellite When the satellite works in transparent transmission mode, the satellite has the function of relay and forwarding.
  • the gateway station has the function of a base station or part of the base station functions. At this time, the gateway station can be regarded as a base station.
  • the satellite When the satellite is working in the regeneration mode, the satellite has data processing capabilities and has the function of a base station or part of the base station function. At this time, the satellite can be regarded as a base station.
  • Figure 2 shows a schematic diagram of NTN in regeneration mode.
  • a satellite has some or all of the functions of a base station and can be called a satellite base station.
  • the satellite base station can provide wireless access services and schedule wireless resources for terminal devices that access the network through the satellite base station.
  • Satellite base stations and terminals can communicate through the user-universal terrestrial radio access network-user (Uu) interface.
  • the satellite base station and the core network can communicate through the next generation network (NG) interface, and the satellite base station and the core network can interact with the non-access layer (non-access layer) of the core network through the NG interface.
  • stratum, NAS) signaling and user service data The satellite radio interface (SRI) interface is the feeder link between the NTN gateway and the satellite.
  • the SRI interface can be used as part of the NG interface to implement communication interaction between the satellite base station and the core network.
  • Figure 3 shows a schematic diagram of a satellite communication scenario.
  • network equipment in the satellite communication scenario includes satellites and gateways.
  • Terminals include Internet of Things terminals, mobile phone terminals, and high-altitude aircraft, etc.
  • the terminals can also be terminals of other forms and functions, etc., which are not limited here.
  • the link between the satellite and the terminal is called the service link, and the link between the satellite and the gateway station is called the feeder link.
  • the gateway station can also be called the gateway station. It should be pointed out that the embodiments of the present application can also be applied to satellite communication scenarios expanded based on Figure 3.
  • the terminal in the embodiment of the present application is a device that can access a wireless communication network.
  • Air interface technology such as NR or LTE
  • Air interface technology can be used to communicate between the terminal and the network equipment.
  • Air interface technology (such as NR or LTE) can also be used to communicate between terminals.
  • the terminal can also be called user equipment (UE), user, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication equipment , user agent or user device, etc., for convenience of description, they are collectively referred to as terminals below.
  • Terminals can be widely used in various scenarios, such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine type communication (massive machine-type communications (mMTC), D2D, V2X, MTC, IOT, virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, or smart city, etc. Scenes.
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency communication
  • massive machine type communication massive machine type communication
  • massive machine type communications massive machine type communications
  • D2D D2D
  • V2X massive machine type communication
  • MTC massive machine type communication
  • IOT virtual reality
  • industrial control autonomous driving
  • telemedicine smart grid
  • smart furniture smart office
  • smart wear smart transportation
  • smart city etc.
  • the terminal can be a mobile phone (120a, 120d, 120f in Figure 1), a tablet computer, a computer with wireless transceiver function (computer 120g in Figure 1), a wearable device, or a vehicle (120b as shown in Figure 1) , drones, helicopters, airplanes (120c in Figure 1), ships, robots, robotic arms, or smart home devices (printer 120e in Figure 1), etc.
  • This application does not limit the specific technology and specific equipment form used by the terminal.
  • the network device in the embodiment of the present application may be a device used to communicate with a terminal, or may be a device that connects the terminal to a wireless communication network.
  • the network device may be a base station, a Node B, an evolved NodeB (eNodeB or eNB), a transmission reception point (TRP), or a next-generation Node B in the 5G system.
  • Next generation NodeB (gNB) access network equipment in open radio access network (open radio access network (O-RAN or open RAN)), next generation base stations in 6G systems, and satellite base stations in NTN ( Figure 2 satellite base stations), or base stations in future mobile communication systems, or access nodes in wireless fidelity (WiFi) systems, etc.
  • the network device may be a module or unit that completes some functions of the base station.
  • it may be a centralized unit (CU), a distributed unit (DU), a centralized unit control plane (CU-CU).
  • CP centralized unit control plane
  • CU user plane CU-UP
  • the network equipment can be a macro base station (110b in Figure 1), a micro base station or an indoor station. (110c in Figure 1), it can also be a relay node or a donor node, etc. This application does not limit the specific technologies and specific equipment forms used in network equipment.
  • Network equipment and/or terminals may be fixed-location or mobile.
  • Network equipment and/or terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; or can be deployed on water; or can be deployed in the air on aircraft, balloons and satellites.
  • This application does not limit the environment/scenario in which network equipment and terminals are located.
  • Network equipment and terminals may be deployed in the same or different environments/scenarios. For example, network equipment and terminals may be deployed on land at the same time; or network equipment may be deployed on land and terminals may be deployed on water. We will not give examples one by one.
  • network architecture shown above is only an illustrative description, and the network architecture applicable to the embodiments of the present application is not limited thereto. Any network architecture that can realize the functions of each of the above network elements is applicable to the embodiments of the present application.
  • satellites have the advantage of not being easily affected by natural disasters or external damage
  • research is currently underway on using satellites as network equipment (such as base stations) for mobile communication systems to provide communication services in some areas such as oceans and forests.
  • satellites move faster relative to the ground and their signals propagate farther, making the signal path loss of satellites as network equipment greater.
  • the coverage and service time of a single satellite and each beam under a single satellite are limited. Therefore, this communication scenario places higher requirements on the access delay of the terminal.
  • the random access process generally refers to the process from the terminal sending a random access preamble (can be referred to as preamble) to trying to access the network device until a basic signaling connection is established between the terminal and the network device.
  • preamble a random access preamble
  • network equipment can broadcast different synchronization signal/physical broadcast channel blocks (SS/PBCH block or SSB) for different communication areas, and distinguish them by the index of the SSB.
  • SS/PBCH block or SSB synchronization signal/physical broadcast channel blocks
  • different SSB indexes indicate that downlink synchronization signals in different beam directions cover and serve different areas.
  • the terminal After receiving the SSB, the terminal completes timing synchronization, determines the time-frequency position of SIB1 based on the information in the SSB, and further completes the analysis of SIB1 to obtain the system information of the cell. At the same time, the terminal detects SIB19 based on the search space of SIB19 configured in SIB1, completes the data analysis of SIB19, and obtains the ephemeris information of the satellite. After obtaining the system information and ephemeris information of the cell, the terminal sends a random access preamble on the corresponding uplink resource according to the configuration information and SSB index. For the network device, the area where the terminal is located can be determined through the received random access preamble and the corresponding uplink resources, and a connection can be established with the terminal.
  • the search space of SIB19 carrying ephemeris information is configured in SIB1. Therefore, in order to obtain the search space information of SIB19, SIB1 needs to be parsed first, that is, the acquisition of SIB19 depends on the data parsing of SIB1.
  • the terminal In NTN, the terminal needs to obtain the system information (SIB1) and ephemeris information (SIB19) of the cell before sending the random access preamble. Therefore, the acquisition of SIB19 relies on the data analysis of SIB1, which will increase the access delay of the terminal.
  • the SSB pattern (also called pattern) (SSB pattern) is in a group of 20ms, 8 SSBs are sent in 2ms, and the remaining SIB1 and other system information ( other system information, OSI) OSI (including SIB19) needs to occupy 16 time slots (slots), which is 8ms.
  • Other blank time slots also need to consider random access response (random access response, RAR)/Msg4/Paging (paging) and other signaling.
  • the delay in the initial synchronization phase needs to be considered:
  • the first step SSB search, find the optimal SSB and complete the primary synchronization signal (primary synchronization signal, PSS)/secondary synchronization signal (secondary synchronization signal, SSS) and physical broadcast channel block (physical broadcast channel block, PBCH) analysis at least required
  • primary synchronization signal primary synchronization signal, PSS
  • secondary synchronization signal secondary synchronization signal, SSS
  • physical broadcast channel block physical broadcast channel block, PBCH
  • Step 2 Terminal processing, protocol stack processing/queuing take time, and a certain delay interval needs to be left between SSB processing and SIB1 processing;
  • Step 3 The terminal needs to search SIB1 first and parse the information of SIB1 before it can obtain the search space of SIB19 that carries ephemeris.
  • this application provides a communication method and communication device, which can unbind the acquisition of the search space of SIB19 and the data analysis of SIB1, thereby reducing the access delay of the terminal.
  • Figure 4 is a schematic flow chart of the communication method 400 provided by this application.
  • Method 400 may be executed by the terminal and network equipment, or may be executed by modules or units in the terminal and network equipment, without limitation. For convenience of description, they are collectively referred to as terminals and network devices below. Method 400 may include at least part of the following.
  • Step 401 The network device sends the first SSB to the terminal.
  • the terminal receives the first SSB from the network device.
  • the first SSB includes first configuration information
  • the first configuration information is used to determine the time domain position of the first search space of the first scheduling information
  • the first scheduling information is used to schedule the first SIB.
  • the first SIB is an information block other than SIB1.
  • the first SIB is used to carry information related to random access of the terminal.
  • the first SIB is SIB19
  • SIB19 is used to carry information related to satellite ephemeris.
  • Information related to satellite ephemeris can be used for random access of terminals.
  • the information related to satellite ephemeris includes at least one of the following information: ephemeris, timing advance related parameters, valid time, or reference time, etc.
  • the first configuration information may be configuration information of the time domain position of the second search space of the second scheduling information, and the second scheduling information is used to schedule SIB1 corresponding to the first SSB. That is, the configuration information of the time domain position of the second search space of the second scheduling information can be used to determine the time domain position of the search space of the first scheduling information, and can also be used to determine the time domain of the search space of the second scheduling information. Location. In other words, the first configuration information multiplexes the configuration information of the time domain position of the second search space of the second scheduling information.
  • a first table is preconfigured in the terminal and the network device, and the first table includes both parameters for determining the time domain position of the first search space and parameters for determining the time domain position of the second search space.
  • the terminal receives the first configuration information, it can obtain the parameters for determining the time domain position of the first search space and the time domain position for determining the second search space from the first table according to the first configuration information. parameters, and the terminal can determine the time domain position of the first search space and the time domain position of the second search space based on the obtained parameters.
  • the first configuration information is configuration information of the time domain position of the first search space. That is, new configuration information can be added to the SSB on the basis of the existing SSB to configure the time domain position of the first search space.
  • the terminal and the network device may be pre-configured with a second table and a third table, the second table includes parameters for determining the time domain position of the second search space, and the third table includes parameters for determining the first search space. Parameters of spatial temporal position.
  • the terminal can obtain the parameters for determining the time domain location of the second search space from the second table based on the configuration information of the time domain location of the second search space carried by the first SSB,
  • the parameters used to determine the time domain position of the first search space are obtained from the third table according to the first configuration information carried by the first SSB, and then the terminal can determine the time domain position of the first search space and the second time domain position according to the obtained parameters.
  • Temporal location in the search space is a third table and a third table, the second table includes parameters for determining the time domain position of the second search space, and the third table includes parameters for determining the first search space. Parameters of spatial temporal position.
  • the "scheduling information" in this application can also be replaced by “physical downlink control channel (PDCCH)” or “downlink control information (DCI)”, etc.
  • PDCCH physical downlink control channel
  • DCI downlink control information
  • Step 402 The terminal determines the time domain position of the first search space according to the first configuration information.
  • step 402 includes: the terminal obtains parameters for determining the time domain position of the first search space according to the first configuration information; and the terminal determines the time domain position of the first search space according to the parameters for determining the time domain position of the first search space. A temporal position in the search space.
  • the parameters used to determine the time domain position of the first search space have various forms, as follows.
  • Form 1 The parameters used to determine the time domain position of the first search space include a first offset and a first interval.
  • the first offset is the offset of the CORESET of the first SIB relative to the starting position of the system frame where the first SSB is located, and the first interval is between the time domain positions of the CORESET of the first SIB corresponding to two adjacent SSBs. interval.
  • step 402 specifically includes: the terminal obtains the first offset and the first interval according to the first configuration information; and the terminal determines the time domain position of the first search space according to the first offset and the first interval.
  • the terminal when the first configuration information is the configuration information of the time domain position of the second search space, the terminal can obtain the first offset and the first interval according to the first table of the first configuration information.
  • the terminal may obtain the first offset and the first interval from the third table according to the first configuration information.
  • the first SSB also includes the index of the first SSB, information used to determine the subcarrier spacing, and the number of the system frame where the first SSB is located.
  • the terminal may determine the time domain position of the first search space according to the first offset, the first interval, the index of the first SSB, information used to determine the subcarrier interval, and the number of the system frame in which the first SSB is located.
  • the starting time slot of the time domain position of the first search space is the first time slot of the first system frame:
  • n 1 of the first time slot satisfies:
  • the number of the first system frame SFN 1 satisfies:
  • O 1 is the first offset
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is the number of slots in 1 millisecond
  • i is the index of the first SSB
  • M 1 is the first interval
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the first SSB also includes the index of the first SSB, information used to determine the subcarrier spacing, and the number of the system frame where the first SSB is located.
  • the terminal may determine the time domain position of the first search space according to the first offset, the first interval, the index of the first SSB, information used to determine the subcarrier interval, and the number of the system frame in which the first SSB is located.
  • the starting time slot of the time domain position of the first search space is the first time slot of the first system frame:
  • n 1 of the first time slot satisfies:
  • the number of the first system frame SFN 1 satisfies:
  • O 1 is the first offset
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is the number of slots in 1 millisecond
  • i is the index of the first SSB
  • M 1 is the first interval
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • Form 2 The parameters used to determine the time domain position of the first search space include a third offset.
  • the third offset is an offset between the starting time slot of the first search space and the starting time slot of the second search space.
  • step 402 specifically includes: the terminal obtains the third offset according to the first configuration information; and the terminal determines the time domain position of the first search space according to the third offset.
  • the starting time slot of the time domain position of the first search space is the first time slot of the first system frame:
  • n 1 n 0 +Offset 1 ;
  • the number of the first system frame SFN 1 satisfies:
  • n 0 is the number of the starting time slot of the second search space
  • Offset 1 is the third offset
  • SFN SSB_i is the number of the system frame where the first SSB is located
  • the method of determining the time domain position of the second search space is as follows.
  • Method 1 The starting time slot of the time domain position of the second search space is the second time slot of the second system frame:
  • the number SFN 0 of the second system frame satisfies:
  • O is the second offset
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is The number of time slots within 1 millisecond
  • i is the index of the first SSB
  • M is the second interval
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, is the number of time slots in a system frame, Indicates rounding down.
  • CORESET0 is the CORESET corresponding to SIB1.
  • Method 2 The starting time slot of the time domain position of the second search space is the second time slot of the second system frame:
  • the number SFN 0 of the second system frame satisfies:
  • O is the second offset
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is The number of time slots within 1 millisecond
  • i is the index of the first SSB
  • M is the second interval
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, is the number of time slots in a system frame, Indicates rounding down.
  • CORESET0 is the CORESET corresponding to SIB1.
  • the probability that the terminal faces beam switching is lower, which helps to improve demodulation performance.
  • the network device does not need to perform additional configuration, and the terminal can be configured according to the time domain position of SIB1.
  • the time domain position of the scheduling information and the fixed interval determine the time domain position of the scheduling information of the first SIB.
  • the time domain position of the first search space is the same as the time domain position of the second search space.
  • the first configuration information is the configuration information of the time domain position of the second search space. According to the first configuration information, the time domain position of the second search space is obtained, that is, the time domain position of the first search space is obtained, or in other words, according to the first configuration.
  • the process of determining the time domain location of the second search space based on the first configuration information is the process of determining the time domain location of the first search space based on the first configuration information.
  • the network device does not need to provide additional configuration information to the terminal.
  • the method for determining the time domain position of the first search space (or the time domain position of the second search space) can be determined by referring to Method 1 and Method 2 of Form 2 above, which will not be described again here.
  • the first scheduling information and the second scheduling information need to be distinguished.
  • different scrambling sequences may be used for scrambling the first scheduling information and the second scheduling information.
  • the network device may use a first scrambling sequence to scramble the first scheduling information, and a second scrambling sequence to scramble the second scheduling information, where the first scrambling sequence and the second scrambling sequence are different; the terminal The time domain position of the first scrambling sequence in the first search space (ie, the second detecting the first scheduling information scrambled with the first scrambling sequence at the time domain position of the search space), and using the second scrambling sequence at the time domain position of the first search space (i.e., the time domain position of the second search space) The second scheduling information scrambled using the second scrambling sequence is detected.
  • the first scrambling sequence may be SI-RNTI
  • the second scrambling sequence may be NTN-RNTI for NTN scenarios.
  • the first scheduling information and the second scheduling information may also be scrambled using different scrambling sequences.
  • Step 403 The network device sends the first scheduling information at the time domain position of the first search space.
  • the terminal detects the first scheduling information at the time domain position of the first search space.
  • the terminal uses the first scrambling sequence to detect the time domain position of the first search space using the third The first scheduling information scrambled by a scrambling sequence.
  • this application does not limit the manner in which the network device determines the time domain position of the first search space and the first configuration information.
  • the network device may first select the first configuration information used to determine the time domain location of the first search space, and further determine the time domain location of the first search space based on the selected first configuration information.
  • the network device may first determine the time domain position of the first search space, and then determine the first configuration information based on the determined time domain position.
  • the network device determines the first search space based on the first configuration information in a manner similar to that of the terminal, which will not be described in detail.
  • the time domain position of the search space of the scheduling information of the first SIB can be determined based on the first configuration information carried by the first SSB, and the search space determination of the scheduling information of the first SIB can be unbundled from SIB1, that is, There is no need to monitor and receive the scheduling information of the first SIB and the first SIB after obtaining SIB1, which helps to reduce the access delay of the terminal.
  • Figure 5 is an example of the communication method provided by this application.
  • the method shown in Figure 5 is explained by taking the network device as the base station and the first SIB as SIB19 as an example.
  • OSIB19 , M SIB19 , and Offset SIB19 in Figure 5 may correspond to the above O 1 , M 1 , and Offset 1 .
  • Step 501 The base station sends SSB to the terminal.
  • the terminal receives the SSB from the base station.
  • Step 502 The terminal parses the PSS, SSS and PBCH in the SSB, and obtains the index of the SSB, the configuration information of the search space of the scheduling information of SIB1, and the configuration information of the search space of the scheduling information of SIB19.
  • the parameters used to determine the search space of the scheduling information of SIB1 may be obtained according to the configuration information of the search space of the scheduling information of SIB1.
  • Parameters for determining the search space of the scheduling information of SIB19 may be obtained according to the configuration information of the search space of the scheduling information of SIB19.
  • Step 503 The base station sends SIB1 to the terminal.
  • the base station sends the scheduling information of SIB1 on the search space corresponding to the configuration information of the search space of the scheduling information of SIB1, and then sends SIB1 according to the scheduling information of SIB1.
  • Step 504 The base station sends SIB19 to the terminal.
  • the base station sends the scheduling information of SIB19 on the search space corresponding to the configuration information of the search space of the scheduling information of SIB19, and then sends SIB19 according to the scheduling information of SIB19.
  • the base station can first select the configuration information of the search space for the scheduling information of SIB1 or SIB19, and further determine the search space for sending the scheduling information of SIB1 or SIB19 based on the selected configuration information.
  • the base station can first determine the search space for sending SIB1 or SIB19. The search space of the scheduling information, and then determine the configuration information of the search space of the scheduling information of SIB1 or SIB19 based on the determined search space, which is not limited.
  • Step 505 The terminal receives and parses SIB1 and SIB19 based on the index of SSB, the configuration information of the search space of the scheduling information of SIB1, and the configuration information of the search space of the scheduling information of SIB19, and obtains the system information and ephemeris information of the cell.
  • the terminal determines the search space of the scheduling information of SIB1 based on the index of the SSB and the configuration information of the search space of the scheduling information of SIB1.
  • the terminal receives the scheduling information of SIB1 on the search space of the scheduling information of SIB1, and receives the scheduling information of SIB1 based on the scheduling information of SIB1. and parsing SIB1 to obtain the system information of the cell; determine the search space of SIB19 scheduling information based on the index of SSB and the configuration information of the search space of SIB19 scheduling information.
  • the terminal receives the scheduling information of SIB19 on the search space of SIB19 scheduling information. According to The scheduling information of SIB19 is received and analyzed by SIB19 to obtain the ephemeris information.
  • Step 506 The terminal sends a random access preamble on the uplink resource corresponding to the SSB index according to the system information and ephemeris information of the cell.
  • the following describes the configuration information of the search space for SIB1 scheduling information, the configuration information of the search space for SIB19 scheduling information, the way the terminal determines the search space for SIB1 scheduling information, and the terminal's determination of the search space for SIB19 scheduling information based on specific scenarios. way to describe.
  • the base station configures OSIB19 and MSIB19 in the search space of the scheduling information of SIB19 for the terminal, where OSIB19 is the offset of the CORESET of SIB19 relative to the starting position of the system frame where the SSB is located, and MSIB19 is the adjacent The interval between the time domain positions of the CORESET of SIB19 corresponding to the two SSBs.
  • Method 1 The configuration information of the search space of the scheduling information of SIB19 multiplexes the configuration information of the search space of the scheduling information of SIB1.
  • the configuration information of the search space of the scheduling information of SIB1 can be used to obtain the parameters of the search space of the scheduling information of SIB1, and can also be used to obtain the parameters of the search space of the scheduling information of SIB19.
  • search space 0 SearchSpaceZero
  • the parameters of the search space of the scheduling information of SIB19 have a certain relative relationship with the parameters of the search space of the scheduling information of SIB1.
  • the parameters of the search space of SIB1's scheduling information and the parameters of the search space of SIB19's scheduling information can belong to the same parameter table. For example, add the parameters of SIB19 to the parameter table of the search space of SIB1's scheduling information. Parameters of the search space of scheduling information. In this way, when the terminal obtains the configuration information of the search space of SIB1 scheduling information, it can simultaneously obtain the parameters of the search space of SIB1 scheduling information and the search of SIB19 scheduling information based on the configuration information. spatial parameters.
  • Table 1 shows the parameter table of the search space of the scheduling information of SIB1 and the search space of the scheduling information of SIB19 (such as the parameters of the PDCCH monitoring timing of the Type0-PDCCH CSS set and the Type0C-PDCCH CSS set - NTN SS/PBCH block and CORESET multiplexing pattern 1 and FR1 (parameters for PDCCH monitoring occasions for Type0-PDCCH CSS set and Type0C-PDCCH CSS set-SS/PBCH block and CORESET multiplexing pattern 1 and FR1 in NTN), where CSS is The abbreviation of common search space, FR1 is a form of frequency range 1 (abbreviation of frequency range 1).
  • Table 1 may be formed by adding two columns, O SIB19 and M SIB19 , to the parameters of the search space of the original SIB1 scheduling information.
  • the parameter table can also be in other forms.
  • the parameter table can be a combination of any one or more rows in Table 1 and any one or more columns in Table 1, etc., without limitation.
  • the indexes in Table 1 correspond to the configuration information of the search space of the scheduling information of SIB1, and different configuration information corresponds to different indexes, that is, corresponds to different parameters of the search space.
  • the terminal can determine the index of Table 1 based on the value of SearchSpaceZero, and then determine the value of each parameter based on the index.
  • SearchSpaceZero in DCCH-Config SIB1 is 0000, which corresponds to index 0 in Table 1.
  • SearchSpaceZero in DCCH-Config SIB1 is 0010, which corresponds to index 2 in Table 1.
  • the terminal can obtain the O sum of the search space of the scheduling information of SIB1 from the search space of the scheduling information of SIB1 and the parameter table of the search space of the scheduling information of SIB19 according to the configuration information of the search space of the scheduling information of SIB1.
  • Method 2 Add the search space configuration information of the SIB19 scheduling information to the SSB.
  • the MIB several new bits are added to the MIB or several bits or reserved bits are used in the PBCH.
  • the several bits are used to indicate the configuration information of the search space of the scheduling information of SIB19.
  • the PDCCH configuration (PDCCH-Config SIB19) of SIB19 or the search space SIB19 (SearchSpaceSIB19) is added to the MIB as the search space configuration information of the scheduling information of SIB19.
  • Table 2 shows the parameter table of the search space of the scheduling information of SIB19 (such as the parameters of the PDCCH listening timing of the Type0C-PDCCH CSS set - SS/PBCH block and CORESET multiplexing mode 1 and FR1 in NTN (parameters for PDCCH monitoring occurrences for Type0C-PDCCH CSS set-SS/PBCH block and CORESET multiplexing pattern 1 and FR1 in NTN)).
  • the parameter table can also be in other forms.
  • the parameter table can be a combination of any one or more rows in Table 2 and any one or more columns in Table 2, etc., without limitation.
  • the indexes in Table 2 correspond to the configuration information of the search space of the SIB19 scheduling information
  • different configuration information corresponds to different indexes, that is, corresponds to different parameters of the search space.
  • the terminal can determine the index of Table 3 based on the value of SearchSpaceZeroSIB19, and then determine the value of each parameter based on the index.
  • SearchSpaceZeroSIB19 is 0000 corresponding to index 0 in Table 3.
  • SearchSpaceZeroSIB19 is 0010, which corresponds to index 2 in Table 3.
  • the terminal can obtain O and M of the search space of the scheduling information of SIB1 from the parameter table of the search space of the scheduling information of SIB1 according to the configuration information of the search space of the scheduling information of SIB1, and search according to the scheduling information of SIB19
  • the configuration information of the space obtains OSIB19 and MSIB19 of the search space of the scheduling information of SIB19 from the parameter table of the search space of the scheduling information of SIB19 .
  • the terminal determines the system frame number SFN 0 and the starting time slot number n 0 of the search space of the scheduling information of SIB1 through the following formula:
  • the terminal determines the system frame SFN 1 and the starting time slot n 1 of the search space of the scheduling information of SIB19 according to the following formula:
  • O SIB19 is the offset of the CORESET of SIB19 relative to the starting position of the system frame where the SSB is located, in time slots; ⁇ is the information used to determine the subcarrier spacing; 2 ⁇ is the number of time slots within 1 millisecond; i is the index of SSB; is the maximum number of candidate SSBs in a half-frame; M SIB19 is the interval between the time domain positions of the CORESET of SIB19 corresponding to two adjacent SSBs, and the unit is a time slot; is the number of time slots in a system frame; SFN SSB_i is the number of the system frame where the SSB is located; Indicates rounding down.
  • the base station configures the Offset SIB19 of the search space of the scheduling information of SIB19 for the terminal.
  • Offset SIB19 is the offset between the starting time slot of the search space of the scheduling information of SIB19 and the starting time slot of the search space of the scheduling information of SIB1.
  • Method 1 The configuration information of the search space of the scheduling information of SIB19 multiplexes the configuration information of the search space of the scheduling information of SIB1.
  • the configuration information of the search space of the scheduling information of SIB1 can be used to obtain the parameters of the search space of the scheduling information of SIB1, and can also be used to obtain the parameters of the search space of the scheduling information of SIB19.
  • MIB master information block
  • the parameters of the search space of the scheduling information of SIB19 have a certain relative relationship with the parameters of the search space of the scheduling information of SIB1.
  • the parameters of the search space of SIB1's scheduling information and the parameters of the search space of SIB19's scheduling information can belong to the same parameter table. For example, add the parameters of SIB19 to the parameter table of the search space of SIB1's scheduling information. Parameters of the search space of scheduling information. In this way, when the terminal obtains the configuration information of the search space of SIB1 scheduling information, it can simultaneously obtain the parameters of the search space of SIB1 scheduling information and the search of SIB19 scheduling information based on the configuration information. spatial parameters.
  • Table 3 shows another form of the parameter table of the search space of the scheduling information of SIB1 and the search space of the scheduling information of SIB19.
  • Table 3 may be formed by adding the Offset 1 column to the parameters of the search space of the original SIB1 scheduling information.
  • the parameter table can also be in other forms.
  • the parameter table is any row or multiple rows in Table 3 and any column or column in Table 3. Combinations of multiple columns, etc., are not restricted.
  • the indexes in Table 3 correspond to the configuration information of the search space of the scheduling information of SIB1, and different configuration information corresponds to different indexes, that is, corresponds to different parameters of the search space.
  • the terminal can determine the index of Table 2 based on the value of SearchSpaceZero, and then determine the value of each parameter based on the index.
  • SearchSpaceZero in DCCH-Config SIB1 is 0000, which corresponds to index 0 in Table 2.
  • SearchSpaceZero in DCCH-Config SIB1 is 0010, which corresponds to index 2 in Table 2.
  • the terminal can obtain the O sum of the search space of the scheduling information of SIB1 from the search space of the scheduling information of SIB1 and the parameter table of the search space of the scheduling information of SIB19 according to the configuration information of the search space of the scheduling information of SIB1. M, and the Offset SIB19 of the search space of the scheduling information of SIB19.
  • Method 2 Add the search space configuration information of SIB19 scheduling information in SSB
  • several new bits are added to the MIB or several bits or reserved bits are used in the PBCH.
  • the several bits are used to indicate the configuration information of the search space of the scheduling information of SIB19. For example, add PDCCH-Config SIB19 or SearchSpaceSIB19 to the MIB as the search space configuration information of the scheduling information of SIB19.
  • Table 4 shows another form of the parameter table of the search space of the scheduling information of SIB19.
  • the parameter table can also be in other forms.
  • the parameter table can be a combination of any one or more rows in Table 4 and any one or more columns in Table 4, etc., without limitation.
  • the indexes in Table 4 correspond to the configuration information of the search space of the SIB19 scheduling information, and different configuration information corresponds to different indexes, that is, corresponds to different parameters of the search space.
  • the terminal can determine the index of Table 4 based on the value of SearchSpaceZeroSIB19, and then determine the value of each parameter based on the index.
  • SearchSpaceZeroSIB19 is 0000, which corresponds to index 0 in Table 4.
  • the parameter Offset SIB19 1 of the search space of the scheduling information of SIB19.
  • SearchSpaceZeroSIB19 is 0001, which corresponds to index 1 in Table 4.
  • the terminal can obtain O and M of the search space of the scheduling information of SIB1 from the parameter table of the search space of the scheduling information of SIB1 according to the configuration information of the search space of the scheduling information of SIB1, and search according to the scheduling information of SIB19
  • the configuration information of the space obtains the Offset SIB19 of the search space of the scheduling information of SIB19 from the parameter table of the search space of the scheduling information of SIB19.
  • the terminal determines the system frame number SFN 0 and the starting time slot number n 0 of the search space of the scheduling information of SIB1 through the following formula:
  • O is the offset of CORESET0 corresponding to the SSB relative to the starting position of the system frame where the SSB is located, in time slots; ⁇ is the information used to determine the subcarrier spacing; 2 ⁇ is the number of time slots within 1 millisecond; i is the index of SSB; is the maximum number of candidate SSBs in a half-frame; M is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, and the unit is a time slot; is the number of time slots in a system frame, SFN SSB_i is the number of the system frame where the SSB is located, Indicates rounding down.
  • the terminal determines the system frame SFN 1 and the starting time slot n 1 of the search space of the scheduling information of SIB19 according to the following formula:
  • n 1 n 0 +Offset SIB19 ;
  • n 0 is the number of the starting time slot of the search space of the scheduling information of SIB1
  • SFN SSB_i is the number of the system frame where the SSB is located
  • the base station determines the search space for sending the scheduling information of SIB1 or SIB19 based on the configuration information of the search space of the selected scheduling information of SIB1 or SIB19 in a manner similar to that of the terminal, which will not be described in detail.
  • the search space of the scheduling information of SIB19 is the same as the search space of the scheduling information of SIB1, and the scheduling information of SIB19 and the scheduling information of SIB1 are distinguished by different scrambling sequences.
  • the base station does not need to additionally indicate OSIB19 , MSIB19 or Offset SIB19 to the terminal.
  • the configuration information of the search space of the scheduling information of SIB19 multiplexes the configuration information of the search space of the scheduling information of SIB1, and the terminal uses Different scrambling sequences are used to detect scheduling information scrambled with different scrambling sequences on the search space determined according to the configuration information of the search space of the scheduling information of SIB1.
  • the scheduling information of SIB19 and the scheduling information of SIB1 both use the search space of the scheduling information of SIB1 (i.e. Type0-PDCCH CSS).
  • the scheduling information Type0-PDCCH of SIB1 is scrambled by SI-RNTI.
  • the scheduling information Type0-PDCCH of SIB19 is scrambled by the new Take the added NTN-RNTI for scrambling as an example.
  • the terminal can obtain O and M of the search space of the scheduling information of SIB1 from the parameter table of the search space of the scheduling information of SIB1 according to the configuration information of the search space of the scheduling information of SIB1.
  • Table 5 shows a form of a parameter table of the search space of the scheduling information of SIB1.
  • the parameter table can also be in other forms.
  • the parameter table can be a combination of any one or more rows in Table 5 and any one or more columns in Table 5, etc., without limitation.
  • the terminal determines the system frame number SFN 0 and the starting time slot number n 0 of the search space of the scheduling information of SIB1 through the following formula:
  • O is the offset of CORESET0 corresponding to the SSB relative to the starting position of the system frame where the SSB is located, in time slots; ⁇ is the information used to determine the subcarrier spacing; 2 ⁇ is the number of time slots within 1 millisecond; i is the index of SSB; is the maximum number of candidate SSBs in a half-frame; M is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, and the unit is a time slot; is the number of time slots in a system frame, SFN SSB_i is the number of the system frame where the SSB is located, Indicates rounding down.
  • the terminal monitors 2 time slots starting from time slot n 0 of SFN 0 , uses SI-RNTI to monitor and receives Type0-PDCCH scrambled with SI-RNTI, and uses NTN-RNTI to monitor and receive NTN-RNTI scrambled Type0-PDCCH to obtain the system information and ephemeris information of the cell.
  • the terminal monitors 2 time slots starting from time slot 8, uses SI-RNTI to monitor and receive Type0-PDCCH scrambled by SI-RNTI, and uses NTN-RNTI to monitor and receive Type0-PDCCH scrambled by NTN-RNTI to obtain the cell system information and ephemeris information.
  • a time domain pattern of SSB, SIB1 and SIB19 can be shown in (a) of Figure 6 .
  • each embodiment of the present application does not limit the frequency domain position of the scheduling information search space of SIB1 and the frequency domain position of the scheduling information search space of SIB19.
  • the frequency domain position of the search space for the scheduling information of SIB19 and the frequency domain position of the search space for the scheduling information of SIB1 may be the same or different, and are not limited.
  • the device in Figure 7 or Figure 8 includes corresponding hardware structures and/or software modules for performing each function.
  • the units and method steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in the form of hardware or a combination of hardware and computer software.
  • FIGS 7 and 8 are schematic structural diagrams of possible devices provided by embodiments of the present application. These devices can be used to implement the functions of the terminal and/or network equipment in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.
  • the device 70 includes a transceiver unit 11 and a processing unit 12 .
  • the transceiver unit 11 is used to: receive the first SSB, the first SSB includes first configuration information, and the first configuration information is used to determine the first schedule
  • the time domain position of the first search space of the information the first scheduling information is used to schedule the first SIB
  • the first SIB is an information block other than SIB1
  • the first SIB is used to carry the information related to the Describes information related to random access of the terminal.
  • the processing unit 12 is configured to determine the time domain position of the first search space according to the first configuration information.
  • the transceiver unit 11 is also configured to detect the first scheduling information at the time domain position of the first search space.
  • the processing unit 12 is specifically configured to: obtain a first offset and a first interval according to the first configuration information, where the first offset is the CORESET of the first SIB relative to the first SSB.
  • the offset of the starting position of the system frame, the first interval is the interval between the time domain positions of the CORESET of the first SIB corresponding to two adjacent SSBs; according to the first offset and the first interval to determine the time domain position of the first search space.
  • the first SSB further includes an index of the first SSB, information used to determine the subcarrier spacing, and the number of the system frame in which the first SSB is located.
  • the processing unit 12 is specifically configured to: based on the first offset, the first interval, the index of the first SSB, the information used to determine the subcarrier interval, and the number of the system frame where the first SSB is located, Determine the time domain position of the first search space, and the starting time slot of the time domain position of the first search space is the first time slot of the first system frame,
  • the number of the first time slot satisfies:
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • O 1 is the first offset
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB, is the maximum number of candidate SSBs in a half-frame
  • M 1 is the first interval
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the first offset and the first interval belong to the first table; or the first offset and the first interval do not belong to the first table; wherein the first table is the A table containing two offsets and a second interval.
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located.
  • the second interval is The interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs.
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the processing unit 12 is specifically configured to: obtain a third offset according to the first configuration information, where the third offset is the starting time slot of the first search space and the third offset of the second scheduling information.
  • the offset between the starting time slots of the two search spaces, the second scheduling information is used to schedule the SIB1; according to the third offset, the time domain position of the first search space is determined.
  • the starting time slot of the time domain position of the first search space is the first time slot of the first system frame:
  • n 1 n 0 +Offset 1 ;
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • n 0 is the number of the starting time slot of the second search space
  • Offset 1 is the third offset
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the third offset belongs to the first table; or the third offset does not belong to the first table; wherein the first table is the table where the second offset and the second interval are located, so
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located, and the second interval is the time domain position of CORESET0 corresponding to two adjacent SSBs. interval, the CORESET0 is the CORESET corresponding to SIB1.
  • the third offset is 1 time slot.
  • the time domain position of the first search space is the same as the time domain position of the second search space of the second scheduling information, and the second scheduling information is used to schedule the SIB1; the terminal is in the first search space.
  • Detecting the first scheduling information at a time domain position in a search space includes: the terminal uses a first scrambling sequence to detect the first scheduling information at a time domain position in the first search space, and the third A scheduling information is scrambled using the first scrambling sequence, and the first scrambling sequence is different from the second scrambling sequence used in the second scheduling information.
  • the number n 0 of the starting time slot of the second search space satisfies:
  • O is the second offset
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located
  • is used to determine the subcarrier spacing.
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB
  • M is the second interval
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, is the number of time slots in a system frame, Indicates rounding down
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the first configuration information is the configuration information of the time domain position of the second search space of the second scheduling information, and the second scheduling information is used to schedule the SIB1; or, the first configuration information is Configuration information of the time domain position of the first search space.
  • the first SIB includes SIB19, which is used to carry information related to satellite ephemeris.
  • the transceiver unit 11 is used to: send the first SSB, the first SSB includes first configuration information, and the first configuration information is used to determine the first The time domain position of the first search space of the scheduling information.
  • the first scheduling information is used to schedule the first SIB.
  • the first SIB is an information block other than SIB1.
  • the first SIB is used to carry the communication with the terminal. Information related to random access; sending the first scheduling information at the time domain position of the first search space.
  • the first configuration information is used to obtain a first offset and a first interval.
  • the first offset is the starting position of the CORESET of the first SIB relative to the system frame where the first SSB is located. offset
  • the first interval is the interval between the time domain positions of the CORESET of the first SIB corresponding to two adjacent SSBs.
  • the first SSB also includes an index of the first SSB, information used to determine the subcarrier spacing, and the number of the system frame in which the first SSB is located, and the time domain position of the first search space.
  • the starting time slot is the first time slot of the first system frame,
  • the number of the first time slot satisfies:
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • O 1 is the first offset
  • is the information used to determine the subcarrier spacing
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB, is the maximum number of candidate SSBs in a half-frame
  • M 1 is the first interval
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the first offset and the first interval belong to the first table; or the first offset and the first interval do not belong to the first table; wherein the first table is the A table containing two offsets and a second interval.
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located.
  • the second interval is The interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs.
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the first configuration information is used to obtain a third offset, where the third offset is a starting time slot of the first search space and An offset between the starting time slots of the second search space of the second scheduling information used to schedule the SIB1.
  • the starting time slot of the time domain position of the first search space is the first time slot of the first system frame:
  • n 1 n 0 +Offset 1 ;
  • the number of the first system frame satisfies:
  • n 1 is the number of the first time slot
  • n 0 is the number of the starting time slot of the second search space
  • Offset 1 is the third offset
  • SFN 1 is the number of the first system frame
  • SFN SSB_i is the number of the system frame where the first SSB is located, Indicates rounding down.
  • the third offset belongs to the first table; or the third offset does not belong to the first table; wherein the first table is the table where the second offset and the second interval are located, so
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located, and the second interval is the time domain position of CORESET0 corresponding to two adjacent SSBs. interval, the CORESET0 is the CORESET corresponding to SIB1.
  • the third offset is 1 time slot.
  • the time domain position of the first search space is the same as the time domain position of the second search space of the second scheduling information
  • the second scheduling information is used to schedule the SIB1
  • the first scheduling information uses The first scrambling sequence is scrambled, and the first scrambling sequence is different from the second scrambling sequence used in the second scheduling information.
  • the number n 0 of the starting time slot of the second search space satisfies:
  • O is the second offset
  • the second offset is the offset of CORESET0 corresponding to the first SSB relative to the starting position of the system frame where the first SSB is located
  • is used to determine the subcarrier spacing.
  • 2 ⁇ is the number of time slots within 1 millisecond
  • i is the index of the first SSB
  • M is the second interval
  • the second interval is the interval between the time domain positions of CORESET0 corresponding to two adjacent SSBs, is the number of time slots in a system frame, Indicates rounding down
  • the CORESET0 is the CORESET corresponding to SIB1.
  • the first configuration information is the configuration information of the time domain position of the second search space of the second scheduling information, and the second scheduling information is used to schedule the SIB1; or, the first configuration information is Configuration information of the time domain position of the first search space.
  • the first SIB includes SIB19, which is used to carry information related to satellite ephemeris.
  • the device 80 includes a processor 21 .
  • the processor 21 is coupled to a memory 23 for storing instructions.
  • the processor 21 is used to execute instructions in the memory 23 to implement the functions of the above-mentioned processing unit 12 .
  • the device 80 further includes a memory 23 .
  • the device 80 further includes an interface circuit 22 .
  • the processor 21 and the interface circuit 22 are coupled to each other.
  • the interface circuit 22 may be a transceiver or an input-output interface.
  • the processor 21 is used to execute instructions to realize the functions of the above-mentioned processing unit 12, and the interface circuit 22 is used to realize the functions of the above-mentioned transceiver unit 11.
  • the chip implements the functions of the terminal and/or network equipment in the above method embodiment.
  • the chip receives information from other modules (such as radio frequency modules or antennas) in the terminal and/or network equipment, and the information is sent to the terminal and/or network equipment by other devices; or, the chip transmits information to the terminal and/or network equipment.
  • Other modules such as radio frequency modules or antennas
  • send information which is sent by the terminal and/or network equipment to other devices.
  • the application also provides a communication device, including a processor, the processor is coupled to a memory, the memory is used to store computer programs or instructions and/or data, the processor is used to execute the computer programs or instructions stored in the memory, or read the memory storage data to execute Carry out the methods in each method embodiment above.
  • a communication device including a processor, the processor is coupled to a memory, the memory is used to store computer programs or instructions and/or data, the processor is used to execute the computer programs or instructions stored in the memory, or read the memory storage data to execute Carry out the methods in each method embodiment above.
  • the communication device includes memory.
  • the memory is integrated with the processor, or is provided separately.
  • the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by terminals and/or network devices in each of the above method embodiments are stored.
  • This application also provides a computer program product, which includes instructions, which when executed by a computer, implement the methods executed by terminals and/or network devices in each of the above method embodiments.
  • the present application also provides a communication system, which includes at least one of the terminals and/or network devices in the above embodiments.
  • processor in the embodiment of the present application can be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or application-specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor can be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application can be implemented by hardware or by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory In memory, register, hard disk, mobile hard disk, compact disc read-only memory (CD-ROM) or any other form of storage medium well known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage media may be located in an ASIC. Additionally, the ASIC may be located in the terminal and/or network equipment. Of course, the processor and the storage medium may also exist as discrete components in the terminal and/or network device.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment, or other programmable device.
  • the computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another.
  • the computer program or instructions may be transmitted from a website, computer, A server or data center transmits via wired or wireless means to another website site, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media.
  • the available media may be magnetic media, such as floppy disks, hard disks, and magnetic tapes; optical media, such as digital video optical disks; or semiconductor media, such as solid-state hard disks.

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Abstract

本申请提供了一种通信方法和通信装置。终端接收同步信号/物理广播信道块SSB,其中,SSB中可以携带用于确定第一系统信息块SIB的调度信息的搜索空间的时域位置的配置信息,第一SIB为SIB1以外的SIB,第一SIB用于承载与所述终端的随机接入相关的信息,终端可以根据第一配置信息,确定第一SIB的调度信息的搜索空间的时域位置。上述方案中,终端无需在获得SIB1之后才能监听和接收第一SIB的调度信息和第一SIB,从而有助于减少终端的接入时延。

Description

一种通信方法和通信装置
本申请要求于2022年08月15日提交中国专利局、申请号为202210976529.1、申请名称为“一种通信方法和通信装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域,并且更具体地,涉及一种通信方法和通信装置。
背景技术
考虑到卫星具有不容易受到自然灾害或外力破坏的影响等优点,目前正在研究将卫星作为移动通信系统的网络设备(如基站),以实现为海洋、森林等一些区域提供通信服务。与地面网络设备不同,卫星相对地面移动速度较大且信号传播距离更远,使得卫星作为网络设备的信号路径损耗更大。此外由于卫星的高速移动,单星和单星下每个波束的覆盖和服务的时间有限。因此,该通信场景对终端的接入时延提出了更高的要求。
因此,如何减少终端的接入时延成为亟待解决的问题。
发明内容
本申请提供了一种通信方法和通信装置,能够减少终端的接入时延。
第一方面,本申请提供了一种通信方法,所述方法可以由终端执行,也可以由终端中的模块或单元执行,为了描述方便,下文统一称为终端。
所述方法包括:终端接收第一同步信号/物理广播信道块(synchronization signal/physical broadcast channel block,SS/PBCH block或SSB),所述第一SSB包括第一配置信息,所述第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,所述第一调度信息用于调度第一系统信息块(system information block,SIB),所述第一SIB为系统信息块1(system information block 1,SIB1)以外的信息块,所述第一SIB用于承载与所述终端的随机接入相关的信息;所述终端根据所述第一配置信息,确定所述第一搜索空间的时域位置;所述终端在所述第一搜索空间的时域位置上检测所述第一调度信息。
“与所述终端的随机接入相关的信息”也可以描述为“除SIB1以外的用于所述终端进行随机接入的信息”。
现有技术中SSB仅携带SIB1的调度信息的搜索空间的时域位置的配置信息,用于承载与终端的随机接入相关的信息的其他SIB的调度信息的搜索空间的时域位置的配置信息承载于SIB1中,即用于承载与终端的随机接入相关的信息的其他SIB的获取依赖于SIB1的数据解析。基于上述方法,第一SIB的调度信息的搜索空间的时域位置可以基于第一SSB携带的第一配置信息确定,可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,即无需在获得SIB1之后才能监听(monitor)和接收第一SIB的调度信息和第一SIB,从而有助于减少终端的接入时延。
结合第一方面,在一种可能的实现方式中,所述终端根据所述第一配置信息,确定所述第一搜索空间的时域位置,包括:所述终端根据所述第一配置信息,获取第一偏移和第一间隔,所述第一偏移为所述第一SIB的控制资源集(control resource set,CORESET)相对于所述第一SSB所在系统帧的起始位置的偏移,所述第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔;所述终端根据所述第一偏移和所述第一间隔,确定所述第一搜索空间的时域位置。
基于上述方法,终端可以根据第一SSB携带的第一配置信息获取第一偏移和第一间隔,从而确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一SSB还包括所述第一SSB 的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号;所述终端根据所述第一偏移和所述第一间隔,确定所述第一搜索空间的时域位置,包括:所述终端根据所述第一偏移、所述第一间隔、所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号,确定所述第一搜索空间的时域位置,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙,
所述第一时隙的编号满足:
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,O1为所述第一偏移,μ为所述用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M1为所述第一间隔,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
基于上述方法,终端可以根据第一SSB携带的信息、第一偏移和第一间隔,通过公式计算的方式,确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
此外,对i进行处理可以保证:当SSB数量超过半帧内最大的候选SSB数量时需要承载在多个系统帧中时的SSB和SIB1、第一SIB的相对位置固定,有助于避免与第一SSB关联的SIB1和第一SIB先于第一SSB发送的情况出现。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一偏移和所述第一间隔属于第一表格;或者,所述第一偏移和所述第一间隔不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的控制资源集0(control resource set 0,CORESET0)相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
例如,当第一配置信息复用SIB1的调度信息的搜索空间的配置信息时,第一偏移和第一间隔可以属于第一表格。
例如,当第一配置信息为第一SSB中新增的配置信息时,第一偏移和第一间隔可以属于不第一表格,换句话说,(第一偏移、和第一间隔)与(第二偏移、第二间隔)属于不同的参数表格。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一偏移O1满足:O1=O±1/2μ,其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,所述CORESET0为SIB1对应的CORESET。
基于上述方法,可以实现第一SIB的调度信息和SIB1的调度信息在相邻时隙上发送,终端面临波束切换的概率较低,有助于提高解调性能。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述终端根据所述第一配置信息,确定所述第一搜索空间的时域位置,包括:所述终端根据所述第一配置信息,获取第三偏移,所述第三偏移为所述第一搜索空间的起始时隙与第二调度信息的第二搜索空间的起始时隙之间的偏移,所述第二调度信息用于调度所述SIB1;所述终端根据所述第三偏移,确定所述第一搜索空间的时域位置。
基于上述方法,终端可以根据第一SSB携带的第一配置信息获取第三偏移,从而确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一搜索空间的时域位置的 起始时隙为第一系统帧的第一时隙:
所述第一时隙的编号满足:n1=n0+Offset1
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,n0为所述第二搜索空间的起始时隙的编号,Offset1为所述第三偏移,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
基于上述方法,终端可以根据第一SSB携带的信息和第三偏移,通过公式计算的方式,确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第三偏移属于第一表格;或者,所述第三偏移不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
例如,当第一配置信息复用SIB1的调度信息的搜索空间的配置信息时,第三偏移可以属于第一表格。
例如,当第一配置信息为第一SSB中新增的配置信息时,第三偏移可以属于不第一表格,换句话说,(第三偏移)与(第二偏移、第二间隔)属于不同的参数表格。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第三偏移为1个时隙。
基于上述方法,可以实现第一SIB的调度信息和SIB1的调度信息在相邻时隙上发送,终端面临波束切换的概率较低,有助于提高解调性能。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一搜索空间的时域位置与第二调度信息的第二搜索空间的时域位置相同,所述第二调度信息用于调度所述SIB1;所述终端在所述第一搜索空间的时域位置上检测所述第一调度信息,包括:所述终端使用第一加扰序列在所述第一搜索空间的时域位置上检测所述第一调度信息,所述第一调度信息使用所述第一加扰序列加扰,所述第一加扰序列与所述第二调度信息使用的第二加扰序列不同。
基于上述方法,可以将第一SIB的调度信息的搜索空间关联到SIB1的调度信息的搜索空间上,并通过不同的加扰序列对第一SIB的调度信息和SIB1的调度信息进行区分,同样可以实现将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第二搜索空间的起始时隙的编号n0满足:
其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整,所述CORESET0为SIB1对应的CORESET。
基于上述方法,对i进行处理可以保证:当SSB数量超过半帧内最大的候选SSB数量时需要承载在多个系统帧中时的SSB和SIB1、第一SIB的相对位置固定,有助于避免与第一SSB关联的SIB1和第一SIB先于第一SSB发送的情况出现。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息,所述第二调度信息用于调度所述SIB1;或者,所述第一配置信息为所述第一搜索空间的时域位置的配置信息。
基于上述方法,当第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息时,可以减少对第一SSB改动。当第一配置信息为第一搜索空间的时域位置的配置信息(即在第一SSB中新增第一配置信息)时,参数表格的设计比较简单,并且第一调度信息和第二调度信息的搜索空间的配置信息相互独立,可以使得配置更加灵活。
结合第一方面或其任意实现方式,在另一种可能的实现方式中,所述第一SIB包括系统信息块19(system information block 1,SIB19),所述SIB19用于承载与卫星星历相关的信息。
可选地,与卫星星历相关的信息包括以下信息中的至少一项:星历、定时提前相关参数、有效时间、或参考时间等。
第二方面,本申请提供了一种通信方法,所述方法可以由网络设备执行,也可以由网络设备中的模块或单元执行,为了描述方便,下文统一称为网络设备。
所述方法包括:网络设备发送第一SSB,所述第一SSB包括第一配置信息,所述第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,所述第一调度信息用于调度第一SIB,所述第一SIB为SIB1以外的信息块,所述第一SIB用于承载与所述终端的随机接入相关的信息;所述网络设备在所述第一搜索空间的时域位置上发送所述第一调度信息。
基于上述方法,第一SIB的调度信息的搜索空间的时域位置可以基于第一SSB携带的第一配置信息确定,可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,即无需在获得SIB1之后才能监听和接收第一SIB的调度信息和第一SIB,从而有助于减少终端的接入时延。
结合第二方面,在一种可能的实现方式中,所述第一配置信息用于获取第一偏移和第一间隔,所述第一偏移为所述第一SIB的CORESET相对于所述第一SSB所在系统帧的起始位置的偏移,所述第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔。
通过上述方法可以使得终端可以根据第一SSB携带的第一配置信息获取第一偏移和第一间隔,从而确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一SSB还包括所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙,
所述第一时隙的编号满足:
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,O1为所述第一偏移,μ为所述用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M1为所述第一间隔,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
通过上述方法可以使得终端可以根据第一SSB携带的信息、第一偏移和第一间隔,通过公式计算的方式,确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
此外,对i进行处理可以保证:当SSB数量超过半帧内最大的候选SSB数量时需要承载在多个系统帧中时的SSB和SIB1、第一SIB的相对位置固定,有助于避免与第一SSB关联的SIB1和第一SIB先于第一SSB发送的情况出现。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一偏移和所述第一间隔属于第一表格;或者,所述第一偏移和所述第一间隔不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
例如,当第一配置信息复用SIB1的调度信息的搜索空间的配置信息时,第一偏移和第一间隔可以属于第一表格。
例如,当第一配置信息为第一SSB中新增的配置信息时,第一偏移和第一间隔可以属于不第一表格,换句话说,(第一偏移、和第一间隔)与(第二偏移、第二间隔)属于不同的参数表格。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一偏移O1满足:O1=O±1/2μ,其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,所述CORESET0为SIB1对应的CORESET。
基于上述方法,可以实现第一SIB的调度信息和SIB1的调度信息在相邻时隙上发送,终端面临波束切换的概率较低,有助于提高解调性能。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一配置信息用于获取第三偏移,所述第三偏移为所述第一搜索空间的起始时隙与第二调度信息的第二搜索空间的起始时隙之间的偏移,所述第二调度信息用于调度所述SIB1。
通过上述方法可以使得终端可以根据第一SSB携带的第一配置信息获取第三偏移,从而确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
所述第一时隙的编号满足:n1=n0+Offset1
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,n0为所述第二搜索空间的起始时隙的编号,Offset1为所述第三偏移,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
通过上述方法可以使得终端可以根据第一SSB携带的信息和第三偏移,通过公式计算的方式,确定第一调度信息的搜索空间的时域位置,可以实现可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第三偏移属于第一表格;或者,所述第三偏移不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
例如,当第一配置信息复用SIB1的调度信息的搜索空间的配置信息时,第三偏移可以属于第一表格。
例如,当第一配置信息为第一SSB中新增的配置信息时,第三偏移可以属于不第一表格,换句话说,(第三偏移)与(第二偏移、第二间隔)属于不同的参数表格。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第三偏移为1个时隙。
基于上述方法,可以实现第一SIB的调度信息和SIB1的调度信息在相邻时隙上发送,终端面临波束切换的概率较低,有助于提高解调性能。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一搜索空间的时域位置与第二调度信息的第二搜索空间的时域位置相同,所述第二调度信息用于调度所述SIB1,所述第一调度信息使用所述第一加扰序列加扰,所述第一加扰序列与所述第二调度信息使用的第二加扰序列不同。
基于上述方法,可以将第一SIB的调度信息的搜索空间关联到SIB1的调度信息的搜索空间上,并通过不同的加扰序列对第一SIB的调度信息和SIB1的调度信息进行区分,同样可以实现将第一SIB的调度信息的搜索空间确定与SIB1解绑,从而有助于减少终端的接入时延。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第二搜索空间的起始时隙的编号n0满足:
其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整,所述CORESET0为SIB1对应的CORESET。
基于上述方法,对i进行处理可以保证:当SSB数量超过半帧内最大的候选SSB数量时需要承载在多个系统帧中时的SSB和SIB1、第一SIB的相对位置固定,有助于避免与第一SSB关联的SIB1和第一SIB先于第一SSB发送的情况出现。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息,所述第二调度信息用于调度所述SIB1;或者,所述第一配置信息为所述第一搜索空间的时域位置的配置信息。
基于上述方法,当第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息时,可以减少对第一SSB改动。当第一配置信息为第一搜索空间的时域位置的配置信息(即在第一SSB中新增第一配置信息)时,参数表格的设计比较简单,并且第一调度信息和第二调度信息的搜索空间的配置信息相互独立,可以使得配置更加灵活。
结合第二方面或其任意实现方式,在另一种可能的实现方式中,所述第一SIB包括SIB19,所述SIB19用于承载与卫星星历相关的信息。
可选地,与卫星星历相关的信息包括以下信息中的至少一项:星历、定时提前相关参数、有效时间、或参考时间等。
第三方面,提供了一种通信装置,该装置用于执行上述任意一方面或其实现方式提供的方法。具体地,该装置可以包括用于执行上述任意一方面或其实现方式提供的方法的单元和/或模块,如处理单元和/或通信单元。
在一种实现方式中,该装置为终端和/或网络设备。当该装置为终端和/或网络设备时,通信单元可以是收发器,或,输入/输出接口,或者通信接口;处理单元可以是至少一个处理器。可选地,收发器为收发电路。可选地,输入/输出接口为输入/输出电路。
在另一种实现方式中,该装置为用于终端和/或网络设备中的芯片、芯片系统或电路。当该装置为用于终端和/或网络设备中的芯片、芯片系统或电路时,通信单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等;处理单元可以是至少一个处理器、处理电路或逻辑电路等。
第四方面,提供了一种通信装置,该装置包括:存储器,用于存储程序;至少一个处理器,用于执行存储器存储的计算机程序或指令,以执行上述任意一方面或其实现方式提供的方法。
在一种实现方式中,该装置为终端和/或网络设备。
在另一种实现方式中,该装置为用于终端和/或网络设备中的芯片、芯片系统或电路。
第五方面,提供了一种通信装置,该装置包括:至少一个处理器和通信接口,该至少一个处理器 用于通过该通信接口获取存储在存储器的计算机程序或指令,以执行上述任意一方面或其实现方式提供的方法。该通信接口可以由硬件或软件实现。
在一种实现方式中,该装置还包括该存储器。
第六方面,提供了一种处理器,用于执行上述各方面提供的方法。
对于处理器所涉及的发送和获取/接收等操作,如果没有特殊说明,或者,如果未与其在相关描述中的实际作用或者内在逻辑相抵触,那么可以理解为处理器输出和接收、输入等操作,也可以理解为由射频电路和天线所进行的发送和接收操作,本申请对此不做限定。
第七方面,提供了一种计算机可读存储介质,该计算机可读介质存储用于设备执行的程序代码,该程序代码包括用于执行上述任意一方面或其实现方式提供的方法。
第八方面,提供了一种包含指令的计算机程序产品,当该计算机程序产品在计算机上运行时,使得计算机执行上述任意一方面或其实现方式提供的方法。
第九方面,提供了一种芯片,芯片包括处理器与通信接口,处理器通过通信接口读取存储器上存储的指令,执行上述任意一方面或其实现方式提供的方法。该通信接口可以由硬件或软件实现。
可选地,作为一种实现方式,芯片还包括存储器,存储器中存储有计算机程序或指令,处理器用于执行存储器上存储的计算机程序或指令,当计算机程序或指令被执行时,处理器用于执行上述任意一方面或其实现方式提供的方法。
第十方面,提供了一种通信系统,包括上文的终端和/或网络设备。
附图说明
图1是可以应用本申请的实施例的一种通信系统的示意图。
图2是可以应用本申请的实施例的另一通信系统的示意图。
图3是可以应用本申请的实施例卫星通信场景的一个示意图。
图4是本申请提供的通信方法400的示意性流程图。
图5是本申请提供的通信方法的一个示例。
图6是SSB、SIB1和SIB19的时域模式的一个示意图。
图7是本申请的实施例提供的装置的一种结构示意图。
图8是本申请的实施例提供的装置的另一种结构示意图。
具体实施方式
为便于理解本申请实施例,在介绍本申请的实施例之前,先做出以下几点说明。
在本申请中,“用于指示”或“指示”可以包括用于直接指示和用于间接指示,或者说“用于指示”或“指示”可以显式地和/或隐式地指示。例如,当描述某一信息用于指示信息I时,可以包括该信息直接指示I或间接指示I,而并不代表该信息中一定携带有I。又例如,隐式指示可以基于用于传输的位置和/或资源;显式指示可以基于一个或多个参数,和/或一个或多个索引,和/或一个或多个它所表示的位模式。
本申请对很多特性所列出的定义仅用于以举例方式来解释该特性的功能,其详细内容可以参考现有技术。
下文示出的实施例中,第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分,并不用来限制本申请实施例的范围。例如,区分不同的字段、不同的信息等。
“预先定义”可以通过在设备中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。其中,“保存”可以是指,保存在一个或者多个存储器中。存储器的类型可以是任意形式的存储介质,本申请并不对此限定。
本申请实施例中涉及的“协议”可以是指通信领域的标准协议,例如可以包括长期演进(long term evolution,LTE)协议、新无线(new radio,NR)协议以及应用于未来的通信系统中的相关协议,本申请对此不做限定。
本申请将围绕包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是,各个系统可以包括另外的设备、组件、模块等,并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外,还可以使用这些方案的组合。
在本申请实施例中,“示例的”、“例如”、“示例性地”、“作为(另)一个示例”等词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言,使用示例的一词旨在以具体方式呈现概念。
术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”,除非是以其他方式另外特别强调。
“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a、b和c中的至少一项(个),可以表示:a,或,b,或,c,或,a和b,或,a和c,或,b和c,或,a、b和c。其中a、b和c分别可以是单个,也可以是多个。
在本申请实施例中,涉及网元A向网元B发送消息、信息或数据,以及网元B接收来自网元A的消息、信息或数据的相关描述,旨在说明该消息、信息或数据是要发给哪个网元,而并不限定它们之间是直接发送还是经由其他网元间接发送。
在本申请实施例中,“当……时”、“在……的情况下”、“若”以及“如果”等描述均指在某种客观情况下设备会做出相应的处理,并非是限定时间,且也不要求设备在实现时一定要有判断的动作,也不意味着存在其它限定。
为了便于理解,首先对可以应用本申请的实施例的通信系统进行描述。
本申请的实施例可以应用于各种通信系统。例如:长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、公共陆地移动网络(public land mobile network,PLMN)、第五代(5th generation,5G)系统、第六代(6th generation,6G)系统或未来的通信系统等。本申请中的5G系统包括非独立组网(non-standalone,NSA)的5G移动通信系统或独立组网(standalone,SA)的5G移动通信系统。本申请的实施例还可以应用于卫星通信系统等非陆地通信网络(non-terrestrial network,NTN)通信系统。本申请的实施例还可以应用于设备到设备(device to device,D2D)通信系统、侧行链路(sidelink,SL)通信系统、机器到机器(machine to machine,M2M)通信系统、机器类型通信(machine type communication,MTC)系统、物联网(Internet of things,IoT)通信系统、车联万物(vehicle to everything,V2X)通信系统、无人机(uncrewed aerial vehicle,UAV)通信系统或者其他通信系统。
示例性地,图1和图2示出了可以应用本申请的实施例的通信系统。
图1是可以应用本申请的实施例的一种通信系统的示意图。
如图1所示,该通信系统可以包括至少一个网络设备(如图1中的110a、110b、110c),还可以包括至少一个终端(如图1中的120a-120g)。其中,终端可以是移动的或固定的。每个网络设备可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端通信。网络设备和网络设备之间、网络设备和终端之间、以及终端和终端之间可以通过有线或无线的方式相互连接。图1只是示意图,该通信系统中还可以包括其它设备,如还可以包括无线中继设备和无线回传设备等。
图2是可以应用本申请的实施例的另一通信系统的示意图。
本申请的实施例适用于地面通信系统和卫星通信系统融合的通信系统,该通信系统也可以称为非地面网络(non-terrestrial network,NTN)通信系统。
其中,地面通信系统例如可以为LTE系统、通用移动通信系统(universal mobile telecommunications system,UMTS)、5G系统或NR系统、或5G系统下一步发展的通信系统等,此处不做限定。
其中,卫星通信系统相对于传统通信系统,拥有更广的覆盖范围,可以克服海洋、沙漠、高山等自然地理障碍。为了克服传统通信系统的不足,卫星通信系统可以作为传统通信系统的一个有效的补充。根据轨道高度的不同可以将卫星通信系统区分为如下三种:高轨(geostationary earth orbit,GEO)卫星通信系统、中轨(medium earth orbit,MEO)卫星通信系统、以及低轨(low earth orbit,LEO)卫星通信系统。GEO卫星通信系统也可以称同步轨道卫星系统。
其中,GEO卫星一般又称为静止轨道卫星,轨道高度可以为35786千米(km),其主要的优点是相对地面静止并且提供很大的覆盖面积。GEO卫星的缺点也相对突出,如距离地球距离过大,需要较 大口径的天线,又如传输时延较大,在0.5秒左右,无法满足实时业务的需求,再如轨道资源相对紧张,发射成本高并且无法为两极地区提供覆盖。MEO卫星的轨道高度位于2000~35786km,使用相对较少的卫星数目即可以实现全球覆盖,但是其传输时延相比LEO卫星较高,其主要用于定位导航。LEO卫星的轨道高度在300~2000km,LEO卫星比MEO和GEO轨道高度低,数据传播时延小,功率损耗更小,发射成本相对更低,因此LEO卫星通信系统在近年来取得了长足进展。
一般认为,与陆地通信相比,NTN具有不同的信道特性(例如,大传输时延、大多普勒频偏等)。示例性地,GEO卫星通信系统的往返时延为238~270毫秒(ms),LEO卫星通信系统的往返时延为8ms~20ms。
卫星的工作模式可以分为透传(transparent)模式和再生(regenerative)模式。当卫星工作在透传模式时,卫星具有中继转发的功能。关口站具有基站的功能或部分基站功能,此时可以将关口站看作是基站。当卫星工作在再生模式时,卫星具有数据处理能力、具有基站的功能或部分基站功能,此时可以将卫星看作是基站。
图2示出的是再生模式下的NTN的一个示意图。
如图2所示,卫星具有基站的部分或全部功能,可以称为卫星基站,卫星基站可以提供无线接入服务,为通过该卫星基站接入网络的终端设备调度无线资源。卫星基站与终端之间可以通过用户-通用陆地无线接入网络(universal terrestrial radio access network-user,Uu)接口进行通信。其中,卫星基站和核心网(core network,CN)之间可以通过下一代网络(next generation,NG)接口通信,卫星基站和核心网可以通过NG接口交互核心网的非接入层(non-access stratum,NAS)信令以及用户的业务数据。卫星无线接口(satellite radio interface,SRI)接口为NTN网关与卫星之间的馈线链路,在图2中,SRI接口可以作为NG接口的一部分实现卫星基站与核心网之间的通信交互。
图3示出了卫星通信场景的一个示意图。
如图3所示,卫星通信场景中网络设备包括卫星和关口站(gateway)。终端包括物联网终端、手机移动终端、和高空飞机等,终端也可以是其它形态和性能的终端等,此处不做限定。卫星与终端之间的链路称作服务链路(service link),卫星与关口站间的链路称作馈电链路(feeder link)。关口站也可以称为信关站。需要指出的是,本申请的实施例同样可以应用于基于图3拓展得到的卫星通信场景。
本申请的实施例中的终端是一种可以接入无线通信网络的设备。终端与网络设备之间可以采用空口技术(如NR或LTE)进行通信。终端与终端之间也可以采用空口技术(如NR或LTE)进行通信。终端也可以称为用户设备(user equipment,UE)、用户、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端设备、无线通信设备、用户代理或用户装置等,为了描述方便,下文统一称为终端。终端可以广泛应用于各种场景,例如,增强移动宽带(enhanced mobile broadband,eMBB)、超高可靠性超低时延通信(ultra-reliable low-latency communication,URLLC)、大规模机器类型通信(massive machine-type communications,mMTC)、D2D、V2X、MTC、IOT、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、或智慧城市等场景。终端可以是手机(如图1中的120a、120d、120f)、平板电脑、带无线收发功能的电脑(如图1中的电脑120g)、可穿戴设备、车辆(如图1所示的120b)、无人机、直升机、飞机(如图1中的120c)、轮船、机器人、机械臂、或智能家居设备(如图1中的打印机120e)等。本申请对终端所采用的具体技术和具体设备形态不做限定。
本申请的实施例中的网络设备可以是用于与终端进行通信的设备,也可以是一种将终端接入无线通信网络的设备。网络设备可以是基站(base station)、节点B(Node B)、演进型节点B(evolved NodeB,eNodeB或eNB)、发送接收点(transmission reception point,TRP)、5G系统中的下一代节点B(next generation NodeB,gNB)、开放无线接入网(open radio access network,O-RAN或open RAN)中的接入网设备、6G系统中的下一代基站、以及NTN中的卫星基站(如图2中的卫星基站)、或者是未来移动通信系统中的基站、或无线保真(wireless fidelity,WiFi)系统中的接入节点等。或者,网络设备可以是完成基站部分功能的模块或单元,例如,可以是集中式单元(central unit,CU)、分布式单元(distributed unit,DU)、集中单元控制面(CU control plane,CU-CP)模块、或集中单元用户面(CU user plane,CU-UP)模块等。网络设备可以是宏基站(如图1中的110b),还可以是微基站或室内站 (如图1中的110c),还可以是中继节点或施主节点等。本申请中对网络设备所采用的具体技术和具体设备形态不做限定。
网络设备和/或终端可以是固定位置的,也可以是可移动的。网络设备和/或终端可以部署在陆地上,包括室内或室外、手持或车载;或者可以部署在水面上;或者可以部署在空中的飞机、气球和人造卫星上。本申请对网络设备和终端所处的环境/场景不做限定。网络设备和终端可以部署在相同的或不同的环境/场景,例如,网络设备和终端同时部署在陆地上;或者,网络设备部署在陆地上,终端部署在水面上等,不再一一举例。
应理解,上述所示的网络架构仅是示例性说明,适用本申请实施例的网络架构并不局限于此,任何能够实现上述各个网元的功能的网络架构都适用于本申请实施例。
考虑到卫星具有不容易受到自然灾害或外力破坏的影响等优点,目前正在研究将卫星作为移动通信系统的网络设备(如基站),以实现为海洋、森林等一些区域提供通信服务。与地面网络设备不同,卫星相对地面移动速度较大且信号传播距离更远,使得卫星作为网络设备的信号路径损耗更大。此外由于卫星的高速移动,单星和单星下每个波束的覆盖和服务的时间有限。因此,该通信场景对终端的接入时延提出了更高的要求。
在初始接入阶段,作为网络设备,卫星需要依次发送多个波束,向终端配置随机接入资源。随机接入过程,一般指的是终端发送随机接入前导(random access preamble,可简称为preamble)开始尝试接入网络设备,到终端与网络设备间建立起基本的信令连接之前的过程。目前,网络设备可以为不同通信区域广播不同的同步信号/物理广播信道块(synchronization signal/physical broadcast channel block,SS/PBCH block或SSB),并通过SSB的索引(index)进行区分。一般地,不同的SSB索引表示不同波束方向的下行同步信号覆盖和服务不同的区域。在接收SSB之后,终端完成定时同步,并根据SSB中的信息确定SIB1的时频位置,进一步完成SIB1的解析从而获得小区的系统信息。同时,终端根据SIB1中配置的SIB19的搜索空间去检测SIB19,完成SIB19的数据解析,从而获得卫星的星历信息。在获取到小区的系统信息和星历信息后,终端根据配置信息和SSB索引,在对应的上行资源发送随机接入前导。对于网络设备而言,可以通过所接收的随机接入前导以及对应的上行资源确定终端所处的区域,并与终端建立连接。
由以上内容可知,承载星历信息的SIB19的搜索空间在SIB1中配置。因此,要想获得SIB19的搜索空间的信息,需先解析SIB1,即SIB19的获取依赖于SIB1的数据解析。而在NTN中,终端在发送随机接入前导前需要获取小区的系统信息(SIB1)和星历信息(SIB19)。因此,SIB19的获取依赖于SIB1的数据解析会导致终端的接入时延增加。
作为一个示例,根据初始接入过程的信令流程排时序,SSB模式(也可以称为图案)(SSB pattern)以20ms为一组,2ms发8个SSB,剩下的SIB1和其他系统信息(other system information,OSI)OSI(包括SIB19)需要占16个时隙(slot),即8ms。其它空白时隙还需要考虑随机接入响应(random access response,RAR)/Msg4/Paging(寻呼)等信令。256个SSB需要32组,SSB完整的扫描周期需要32*20=640ms。
初始同步阶段的时延需要考虑:
第一步:SSB搜索,找最优SSB并完成主同步信号(primary synchronization signal,PSS)/辅同步信号(secondary synchronization signal,SSS)和物理广播信道块(physical broadcast channel block,PBCH)解析至少需要一个SSB周期,即640ms;
第二步:终端处理、协议栈处理/排队耗时,SSB处理和SIB1处理之间需要留一定的时延间隔;
第三步:终端需要先搜SIB1,解析SIB1的信息,才能获取承载星历的SIB19的searchspace。
假设第一个周期解析PSS/SSS和PBCH,第二个周期解析S1B1,第三个周期解析SIB19,则需要640*3=1920ms=1.92s。可知,在终端发随机接入前导之前需要用时1.92s,时延很大,终端面临波束切换的概率增加,可能导致终端的初始接入时延不可接受。
针对上述问题,本申请提供了一种通信方法和通信装置,可以将SIB19的搜索空间的获取与SIB1的数据解析解绑,从而减少终端的接入时延。
图4是本申请提供的通信方法400的示意性流程图。
方法400可以由终端和网络设备执行,也可以由终端和网络设备中的模块或单元执行,不予限制, 为了描述方便,下文统一称为终端和网络设备。方法400可以包括以下内容的至少部分内容。
步骤401,网络设备向终端发送第一SSB。
相应地,终端接收来自网络设备的第一SSB。
其中,第一SSB包括第一配置信息,第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,第一调度信息用于调度第一SIB。第一SIB为SIB1以外的信息块。
可选地,第一SIB用于承载与终端的随机接入相关的信息。
例如,第一SIB为SIB19,SIB19用于承载与卫星星历相关的信息。与卫星星历相关的信息可以用于终端的随机接入。
可选地,与卫星星历相关的信息包括以下信息中的至少一项:星历、定时提前相关参数、有效时间、或参考时间等。
可选地,第一配置信息可以为第二调度信息的第二搜索空间的时域位置的配置信息,第二调度信息用于调度第一SSB对应的SIB1。即通过第二调度信息的第二搜索空间的时域位置的配置信息既可以用于确定第一调度信息的搜索空间的时域位置,又可以用于确定第二调度信息的搜索空间的时域位置。或者说,第一配置信息复用了第二调度信息的第二搜索空间的时域位置的配置信息。
在此情况下,终端和网络设备中预配置有第一表格,第一表格中同时包括用于确定第一搜索空间的时域位置的参数和用于确定第二搜索空间的时域位置的参数,这样,当终端接收到第一配置信息后,可以根据第一配置信息从第一表格中获取用于确定第一搜索空间的时域位置的参数和用于确定第二搜索空间的时域位置的参数,进而终端可以根据获取到的参数确定第一搜索空间的时域位置和第二搜索空间的时域位置。
可选地,第一配置信息为第一搜索空间的时域位置的配置信息。即可以在现有SSB的基础上,在SSB中增加新的配置信息,用于配置第一搜索空间的时域位置。
在此情况下,终端和网络设备中可以预配置有第二表格和第三表格,第二表格包括用于确定第二搜索空间的时域位置的参数,第三表格包括用于确定第一搜索空间的时域位置的参数。这样,当终端接收到第一SSB后,终端可以根据第一SSB携带的第二搜索空间的时域位置的配置信息从第二表格中获取用于确定第二搜索空间的时域位置的参数,根据第一SSB携带的第一配置信息从第三表格中获取用于确定第一搜索空间的时域位置的参数,进而终端可以根据获取到的参数确定第一搜索空间的时域位置和第二搜索空间的时域位置。
需要指出的是,本申请中的“调度信息”也可以替换为“物理下行控制信道(physical downlink control channel,PDCCH)”或“下行控制信息(downlink control information,DCI)”等。
步骤402,终端根据第一配置信息确定第一搜索空间的时域位置。
一种可能的实现方式,步骤402包括:终端根据第一配置信息获取用于确定第一搜索空间的时域位置的参数;终端根据用于确定第一搜索空间的时域位置的参数,确定第一搜索空间的时域位置。
其中,用于确定第一搜索空间的时域位置的参数有多种形式,具体如下。
形式1:用于确定第一搜索空间的时域位置的参数包括第一偏移和第一间隔。
其中,第一偏移为第一SIB的CORESET相对于第一SSB所在系统帧的起始位置的偏移,第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔。
在此情况下,步骤402具体包括:终端根据第一配置信息,获取第一偏移和第一间隔;终端根据第一偏移和第一间隔,确定第一搜索空间的时域位置。
其中,当第一配置信息为第二搜索空间的时域位置的配置信息时,终端可以根据第一配置信息第一表格中获取第一偏移和第一间隔。当第一配置信息为第一搜索空间的时域位置的配置信息时,终端可以根据第一配置信息第三表格中获取第一偏移和第一间隔。
其中,终端根据第一偏移和第一间隔确定第一搜索空间的时域位置的实现方式有很多,具体如下。
方式1,第一SSB还包括第一SSB的索引、用于确定子载波间隔的信息、以及第一SSB所在系统帧的编号。终端可以根据第一偏移、第一间隔、第一SSB的索引、用于确定子载波间隔的信息、以及第一SSB所在系统帧的编号,确定第一搜索空间的时域位置。
其中,第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
第一时隙的编号n1满足:
第一系统帧的编号SFN1满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,O1为第一偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为第一SSB的索引,为半帧内最大的候选SSB数量,M1为第一间隔,为一个系统帧内的时隙数,SFNSSB_i为第一SSB所在系统帧的编号,表示向下取整。
其中,可以根据协议定义的不同SSB模式(pattern)确定。例如,当SSB模式为case C时,SCS=30kHz,又例如,当SSB模式为case D时,SCS=120kHz,
方式2,第一SSB还包括第一SSB的索引、用于确定子载波间隔的信息、以及第一SSB所在系统帧的编号。终端可以根据第一偏移、第一间隔、第一SSB的索引、用于确定子载波间隔的信息、以及第一SSB所在系统帧的编号,确定第一搜索空间的时域位置。
其中,第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
第一时隙的编号n1满足:
第一系统帧的编号SFN1满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,O1为第一偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为第一SSB的索引,M1为第一间隔,为一个系统帧内的时隙数,SFNSSB_i为第一SSB所在系统帧的编号,表示向下取整。
形式2:用于确定第一搜索空间的时域位置的参数包括第三偏移。
其中,第三偏移为第一搜索空间的起始时隙与第二搜索空间的起始时隙之间的偏移。
在此情况下,步骤402具体包括:终端根据第一配置信息,获取第三偏移;终端根据第三偏移,确定第一搜索空间的时域位置。
其中,第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
第一时隙的编号n1满足:n1=n0+Offset1
第一系统帧的编号SFN1满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n0为第二搜索空间的起始时隙的编号,Offset1为第三偏移,为一个系统帧内的时隙数,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
此外,与第一搜索空间的时域位置的确定方式对应,在本申请中,第二搜索空间的时域位置的确定方式如下。
方式1:第二搜索空间的时域位置的起始时隙为第二系统帧的第二时隙:
第二时隙的编号n0满足:
第二系统帧的编号SFN0满足:
则SFN0=SFNSSB_i+1;
则SFN0=SFNSSB_i
其中,O为第二偏移,第二偏移为第一SSB对应的CORESET0相对于第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整。CORESET0为SIB1对应的CORESET。
方式2:第二搜索空间的时域位置的起始时隙为第二系统帧的第二时隙:
第二时隙的编号n0满足:
第二系统帧的编号SFN0满足:
则SFN0=SFNSSB_i+1;
则SFN0=SFNSSB_i
其中,O为第二偏移,第二偏移为第一SSB对应的CORESET0相对于第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为第一SSB的索引,M为第二间隔,第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整。CORESET0为SIB1对应的CORESET。
可选地,当约束用于调度第一SIB和SIB1在相邻时隙上发送时,O1=O±1/2μ或者Offset1=±1。例如,当约束第一SIB和SIB1在相邻时隙上发送,且第一SIB在SIB1之后发送时,O1=O+1/2μ或Offset1=+1。又例如,当约束第一SIB和SIB1在相邻时隙上发送,且第一SIB在SIB1之前发送时,O1=O-1/2μ或Offset1=-1。
当第一SIB和SIB1在相邻时隙发送时,终端面临波束切换的概率较低,有助于提高解调性能。
此外,需要说明的是,若第一SIB的调度信息的时域位置和SIB1的调度信息的时域位置之间的间隔为固定值,网络设备也可以无需进行额外的配置,终端可以根据SIB1的调度信息的时域位置以及固定的间隔确定第一SIB的调度信息的时域位置。
另一种可能的实现方式,第一搜索空间的时域位置与第二搜索空间的时域位置相同。第一配置信息为第二搜索空间的时域位置的配置信息,根据第一配置信息得到第二搜索空间的时域位置也即得到了第一搜索空间的时域位置,或者说根据第一配置信息确定第一搜索空间的时域位置的过程根据第一配置信息确定第二搜索空间的时域位置的过程即为根据第一配置信息确定第一搜索空间的时域位置的过程。在此情况下,网络设备无需向终端提供额外的配置信息。其中,第一搜索空间的时域位置(或者说第二搜索空间的时域位置)的确定方式可以参考上文形式2的方式1和方式2,在此不再赘述。
并且,由于第一搜索空间的时域位置与第二搜索空间的时域位置相同,因此需要对第一调度信息和第二调度信息进行区分。
可选地,针对第一调度信息和第二调度信息,可以采用不同的加扰序列进行加扰。具体地,网络设备可以使用第一加扰序列对第一调度信息进行加扰,使用第二加扰序列对第二调度信息进行加扰,第一加扰序列和第二加扰序列不同;终端可以使用第一加扰序列在第一搜索空间的时域位置(即第二 搜索空间的时域位置)上检测采用第一加扰序列加扰的第一调度信息,以及使用第二加扰序列在第一搜索空间的时域位置(即第二搜索空间的时域位置)上检测采用第二加扰序列加扰的第二调度信息。
可选地,第一加扰序列可以为SI-RNTI,第二加扰序列可以为用于NTN场景的NTN-RNTI。
当然,在上述的其他实施例中,第一调度信息和第二调度信息也可以使用不同的加扰序列进行加扰。
步骤403,网络设备在第一搜索空间的时域位置上发送第一调度信息。
相应地,终端在第一搜索空间的时域位置上检测第一调度信息。
当第一调度信息使用第一加扰序列进行加扰,第二调度信息使用第二加扰序列进行加扰时,终端使用第一加扰序列在第一搜索空间的时域位置上检测采用第一加扰序列加扰的第一调度信息。
需要说明的是,本申请不限定网络设备确定第一搜索空间的时域位置和第一配置信息的方式。例如,网络设备可以先选择用于确定第一搜索空间的时域位置的第一配置信息,进一步根据选择的第一配置信息确定第一搜索空间的时域位置。又例如,网络设备可以先确定第一搜索空间的时域位置,然后根据确定的时域位置确定第一配置信息。
还需要说明的是,当网络设备先选择第一配置信息时,网络设备根据第一配置信息确定第一搜索空间的方式与终端类似,不再详述。
这样,基于方法400,第一SIB的调度信息的搜索空间的时域位置可以基于第一SSB携带的第一配置信息确定,可以将第一SIB的调度信息的搜索空间确定与SIB1解绑,即无需在获得SIB1之后才能监听和接收第一SIB的调度信息和第一SIB,从而有助于减少终端的接入时延。
下面结合具体的场景对本申请的通信方法进行描述。
图5是本申请提供的通信方法的一个示例。
图5所示的方法以网络设备为基站、第一SIB为SIB19为例进行说明。图5中的OSIB19、MSIB19、OffsetSIB19可以对应于上文的O1、M1、Offset1
步骤501,基站向终端发送SSB。
相应地,终端接收来自基站的SSB。
步骤502,终端解析SSB中的PSS、SSS和PBCH,获得SSB的索引、SIB1的调度信息的搜索空间的配置信息、以及SIB19的调度信息的搜索空间的配置信息。
其中,根据SIB1的调度信息的搜索空间的配置信息可以获取用于确定SIB1的调度信息的搜索空间的参数。根据SIB19的调度信息的搜索空间的配置信息可以获取用于确定SIB19的调度信息的搜索空间的参数。
步骤503,基站向终端发送SIB1。
具体地,基站在与SIB1的调度信息的搜索空间的配置信息对应的搜索空间上发送SIB1的调度信息,然后根据SIB1的调度信息发送SIB1。
步骤504,基站向终端发送SIB19。
具体地,基站在与SIB19的调度信息的搜索空间的配置信息对应的搜索空间上发送SIB19的调度信息,然后根据SIB19的调度信息发送SIB19。
需要说明的是,基站可以先选择SIB1或SIB19的调度信息的搜索空间的配置信息,进一步根据选择的配置信息确定发送SIB1或SIB19的调度信息的搜索空间,或者,基站可以先确定发送SIB1或SIB19的调度信息的搜索空间,然后根据确定的搜索空间确定SIB1或SIB19的调度信息的搜索空间的配置信息,不予限制。
步骤505,终端根据SSB的索引、SIB1的调度信息的搜索空间的配置信息和SIB19的调度信息的搜索空间的配置信息,接收和解析SIB1和SIB19,得到小区的系统信息和星历信息。
具体地,终端根据SSB的索引和SIB1的调度信息的搜索空间的配置信息确定SIB1的调度信息的搜索空间,终端在SIB1的调度信息的搜索空间上接收SIB1的调度信息,根据SIB1的调度信息接收和解析SIB1得到小区的系统信息;根据SSB的索引和SIB19的调度信息的搜索空间的配置信息确定SIB19的调度信息的搜索空间,终端在SIB19的调度信息的搜索空间上接收SIB19的调度信息,根据SIB19的调度信息接收和解析SIB19得到星历信息。
步骤506,终端根据小区的系统信息和星历信息,在与SSB的索引对应的上行资源上发送随机接入前导。
下面结合具体场景对SIB1的调度信息的搜索空间的配置信息、SIB19的调度信息的搜索空间的配置信息、终端确定SIB1的调度信息的搜索空间的方式、以及终端确定SIB19的调度信息的搜索空间的方式进行描述。
场景1
在场景1中,基站为终端配置SIB19的调度信息的搜索空间的OSIB19和MSIB19,其中,OSIB19为SIB19的CORESET相对于SSB所在系统帧的起始位置的偏移,MSIB19为相邻两个SSB对应的SIB19的CORESET的时域位置之间的间隔。
方式1:SIB19的调度信息的搜索空间的配置信息复用SIB1的调度信息的搜索空间的配置信息。
即SIB1的调度信息的搜索空间的配置信息即可以用于获取SIB1的调度信息的搜索空间的参数,又可以用于获取SIB19的调度信息的搜索空间的参数。
例如,可以复用SSB的主信息块(master information block,MIB)中用于指示SIB1的调度信息的搜索空间的4个比特,即SIB1的PDCCH配置(PDCCH-Config SIB1)中的搜索空间0(SearchSpaceZero)。
由于采取复用SIB1的调度信息的搜索空间的配置信息的方式,因此SIB19的调度信息的搜索空间的参数与SIB1的调度信息的搜索空间的参数具有一定的相对关系。
作为一种可能的实现方式,SIB1的调度信息的搜索空间的参数和SIB19的调度信息的搜索空间的参数可以属于同一个参数表格,例如在SIB1的调度信息的搜索空间的参数表格中增加SIB19的调度信息的搜索空间的参数,这样,当终端获取到SIB1的调度信息的搜索空间的配置信息时,可以根据该配置信息同时获取到SIB1的调度信息的搜索空间的参数和SIB19的调度信息的搜索空间的参数。
示例性地,表1示出了SIB1的调度信息的搜索空间和SIB19的调度信息的搜索空间的参数表格(如Type0-PDCCH CSS集和Type0C-PDCCH CSS集的PDCCH监听时机的参数-NTN中的SS/PBCH块和CORESET复用模式1和FR1(parameters for PDCCH monitoring occasions for Type0-PDCCH CSS set and Type0C-PDCCH CSS set-SS/PBCH block and CORESET multiplexing pattern 1 and FR1 in NTN),其中,CSS为通用搜索空间(common search space)的简称,FR1为频率范围1(frequency range 1)的简称)的一种形式。其中,表1可以是在原有SIB1的调度信息的搜索空间的参数增加OSIB19和MSIB19两列形成的。当然,该参数表格还可以是其他形式,例如,参数表格为表1中任意一行或者多行与表1中任意一列或者多列的组合等,不予限制。
表1
其中,表1中的索引与SIB1的调度信息的搜索空间的配置信息相对应,不同的配置信息对应于不同的索引,即对应于不同的搜索空间的参数。以SIB1的调度信息的搜索空间的配置信息为PDCCH-Config SIB1中的SearchSpaceZero为例,终端可以根据SearchSpaceZero的取值确定表1的索引,进而根据索引确定各个参数的取值。例如,DCCH-Config SIB1中的SearchSpaceZero为0000对应于表格1中的索引0,在此情况下,SIB1的调度信息的搜索空间的参数O=4,M=2,SIB19的调度信息的搜索空间的参数OSIB19=4.5,MSIB19=2。又例如,DCCH-Config SIB1中的SearchSpaceZero为0010对应于表格1中的索引2,在此情况下,SIB1的调度信息的搜索空间的参数O=6,M=2,SIB19的调 度信息的搜索空间的参数OSIB19=6.5,MSIB19=2。
需要说明的是,表1中的各参数的取值仅为示例,也可以是其他合理的取值,不予限制。
在此情况下,终端可以根据SIB1的调度信息的搜索空间的配置信息,从SIB1的调度信息的搜索空间和SIB19的调度信息的搜索空间的参数表格获得到SIB1的调度信息的搜索空间的O和M、以及SIB19的调度信息的搜索空间的OSIB19和MSIB19
方式2:在SSB中新增SIB19的调度信息的搜索空间的配置信息。
具体地,在MIB中新增若干个比特或使用PBCH中的若干个比特或预留比特,该若干个比特用于指示SIB19的调度信息的搜索空间的配置信息。例如,在MIB中新增SIB19的PDCCH配置(PDCCH-Config SIB19)或者搜索空间SIB19(SearchSpaceSIB19)等作为SIB19的调度信息的搜索空间的配置信息。
示例性地,表2示出了SIB19的调度信息的搜索空间的参数表格(如Type0C-PDCCH CSS集的PDCCH监听时机的参数-NTN中的SS/PBCH块和CORESET复用模式1和FR1(parameters for PDCCH monitoring occasions for Type0C-PDCCH CSS set-SS/PBCH block and CORESET multiplexing pattern 1 and FR1 in NTN))的一种形式。当然,该参数表格还可以是其他形式,例如,参数表格为表2中任意一行或者多行与表2中任意一列或者多列的组合等,不予限制。
表2
其中,表2中的索引与SIB19的调度信息的搜索空间的配置信息相对应,不同的配置信息对应于不同的索引,即对应于不同的搜索空间的参数。以SIB19的调度信息的搜索空间的配置信息为SearchSpaceZeroSIB19为例,终端可以根据SearchSpaceZeroSIB19的取值确定表3的索引,进而根据索引确定各个参数的取值。例如,SearchSpaceZeroSIB19为0000对应于表格3中的索引0,在此情况下,SIB19的调度信息的搜索空间的参数OSIB19=4.5,MSIB19=2。又例如,SearchSpaceZeroSIB19为0010对应于表格3中的索引2,在此情况下,SIB19的调度信息的搜索空间的参数OSIB19=6.5,MSIB19=2。
需要说明的是,表2中的各参数的取值仅为示例,也可以是其他合理的取值,不予限制。
在此情况下,终端可以根据SIB1的调度信息的搜索空间的配置信息从SIB1的调度信息的搜索空间的参数表格获得SIB1的调度信息的搜索空间的O和M,以及根据SIB19的调度信息的搜索空间的配置信息从SIB19的调度信息的搜索空间的参数表格获得SIB19的调度信息的搜索空间的OSIB19和MSIB19
进一步地,终端根据获取到的O和M,通过以下公式确定SIB1的调度信息的搜索空间的系统帧的编号SFN0和起始时隙的编号n0
则SFN0=SFNSSB_i+1;
则SFN0=SFNSSB_i
其中,O为SSB对应的CORESET0相对于SSB所在系统帧的起始位置的偏移,单位为时隙;μ 为用于确定子载波间隔的信息;2μ为1毫秒内的时隙数;i为SSB的索引;为半帧内最大的候选SSB数量;M为相邻两个SSB对应的CORESET0的时域位置之间的间隔,单位为时隙;为一个系统帧内的时隙数,SFNSSB_i为SSB所在系统帧的编号,表示向下取整。在SCS=30kHz情况下,μ=1,2μ=1,Lmax为8,
进一步地,终端根据获取到的OSIB19和MSIB19,通过以下根据以下公式确定SIB19的调度信息的搜索空间的系统帧SFN1和起始时隙n1
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,OSIB19为SIB19的CORESET相对于SSB所在系统帧的起始位置的偏移,单位为时隙;μ为用于确定子载波间隔的信息;2μ为1毫秒内的时隙数;i为SSB的索引;为半帧内最大的候选SSB数量;MSIB19为相邻两个SSB对应的SIB19的CORESET的时域位置之间的间隔,单位为时隙;为一个系统帧内的时隙数;SFNSSB_i为SSB所在系统帧的编号;表示向下取整。
以SSB的索引i=0、SIB1的调度信息的搜索空间的配置信息对应于表1中的索引0,SCS=30kHz为例,μ=1,2μ=2,O=4,M=2,OSIB19=4.5,MSIB19=2。在此情况下,n0=4*2+0*2=8,n1=4.5*2+0*2=9。当i的取值发生变化,SSB、SIB1和SIB19的时域模式(pattern)可以如图6的(a)图所示。
以SSB的索引i=1、SIB1的调度信息的搜索空间的配置信息对应于表1中的索引0,SCS=30kHz为例,μ=1,2μ=2,O=4,M=2,OSIB19=4.5,MSIB19=2。在此情况下,n0=4*2+1*2=10,n1=4.5*2+1*2=11。当i的取值发生变化,SSB、SIB1和SIB19的时域模式可以如图6的(b)图所示。
场景2
在场景2中,基站为终端配置SIB19的调度信息的搜索空间的OffsetSIB19。其中,OffsetSIB19为SIB19的调度信息的搜索空间的起始时隙与SIB1的调度信息的搜索空间的起始时隙之间的偏移。
方式1:SIB19的调度信息的搜索空间的配置信息复用SIB1的调度信息的搜索空间的配置信息。
即SIB1的调度信息的搜索空间的配置信息即可以用于获取SIB1的调度信息的搜索空间的参数,又可以用于获取SIB19的调度信息的搜索空间的参数。
例如,可以复用SSB的主信息块(master information block,MIB)中用于指示SIB1的调度信息的搜索空间的4个比特,即PDCCH-Config SIB1中的SearchSpaceZero。
由于采取复用SIB1的调度信息的搜索空间的配置信息的方式,因此SIB19的调度信息的搜索空间的参数与SIB1的调度信息的搜索空间的参数具有一定的相对关系。
作为一种可能的实现方式,SIB1的调度信息的搜索空间的参数和SIB19的调度信息的搜索空间的参数可以属于同一个参数表格,例如在SIB1的调度信息的搜索空间的参数表格中增加SIB19的调度信息的搜索空间的参数,这样,当终端获取到SIB1的调度信息的搜索空间的配置信息时,可以根据该配置信息同时获取到SIB1的调度信息的搜索空间的参数和SIB19的调度信息的搜索空间的参数。
示例性地,表3示出了SIB1的调度信息的搜索空间和SIB19的调度信息的搜索空间的参数表格的另一种形式。其中,表3可以是在原有SIB1的调度信息的搜索空间的参数增加Offset1列形成的。当然,该参数表格还可以是其他形式,例如,参数表格为表3中任意一行或者多行与表3中任意一列或 者多列的组合等,不予限制。
表3
其中,表3中的索引与SIB1的调度信息的搜索空间的配置信息相对应,不同的配置信息对应于不同的索引,即对应于不同的搜索空间的参数。以SIB1的调度信息的搜索空间的配置信息为PDCCH-Config SIB1中的SearchSpaceZero为例,终端可以根据SearchSpaceZero的取值确定表2的索引,进而根据索引确定各个参数的取值。例如,DCCH-Config SIB1中的SearchSpaceZero为0000对应于表格2中的索引0,在此情况下,SIB1的调度信息的搜索空间的参数O=4,M=2,SIB19的调度信息的搜索空间的参数OffsetSIB19=1。又例如,DCCH-Config SIB1中的SearchSpaceZero为0010对应于表格2中的索引2,在此情况下,SIB1的调度信息的搜索空间的参数O=6,M=2,SIB19的调度信息的搜索空间的参数OffsetSIB19=1。
需要说明的是,表3中的各参数的取值仅为示例,也可以是其他合理的取值,不予限制。
在此情况下,终端可以根据SIB1的调度信息的搜索空间的配置信息,从SIB1的调度信息的搜索空间和SIB19的调度信息的搜索空间的参数表格获得到SIB1的调度信息的搜索空间的O和M、以及SIB19的调度信息的搜索空间的OffsetSIB19
方式2:在SSB中新增SIB19的调度信息的搜索空间的配置信息
具体地,在MIB中新增若干个比特或使用PBCH中的若干个比特或预留比特,该若干个比特用于指示SIB19的调度信息的搜索空间的配置信息。例如,在MIB中新增PDCCH-Config SIB19或者SearchSpaceSIB19等作为SIB19的调度信息的搜索空间的配置信息。
示例性地,表4示出了SIB19的调度信息的搜索空间的参数表格的另一种形式。当然,该参数表格还可以是其他形式,例如,参数表格为表4中任意一行或者多行与表4中任意一列或者多列的组合等,不予限制。
表4
其中,表4中的索引与SIB19的调度信息的搜索空间的配置信息相对应,不同的配置信息对应于不同的索引,即对应于不同的搜索空间的参数。以SIB19的调度信息的搜索空间的配置信息为SearchSpaceZeroSIB19为例,终端可以根据SearchSpaceZeroSIB19的取值确定表4的索引,进而根据索引确定各个参数的取值。例如,SearchSpaceZeroSIB19为0000对应于表格4中的索引0,在此情况下,SIB19的调度信息的搜索空间的参数OffsetSIB19=1。又例如,SearchSpaceZeroSIB19为0001对应于表格4中的索引1,在此情况下,SIB19的调度信息的搜索空间的参数OffsetSIB19=2。
需要说明的是,表4中的各参数的取值仅为示例,也可以是其他合理的取值,不予限制。
在此情况下,终端可以根据SIB1的调度信息的搜索空间的配置信息从SIB1的调度信息的搜索空间的参数表格获得SIB1的调度信息的搜索空间的O和M,以及根据SIB19的调度信息的搜索空间的配置信息从SIB19的调度信息的搜索空间的参数表格获得SIB19的调度信息的搜索空间的OffsetSIB19
进一步地,终端根据获取到的O和M,通过以下公式确定SIB1的调度信息的搜索空间的系统帧的编号SFN0和起始时隙的编号n0
则SFN0=SFNSSB_i+1;
则SFN0=SFNSSB_i
其中,O为SSB对应的CORESET0相对于SSB所在系统帧的起始位置的偏移,单位为时隙;μ为用于确定子载波间隔的信息;2μ为1毫秒内的时隙数;i为SSB的索引;为半帧内最大的候选SSB数量;M为相邻两个SSB对应的CORESET0的时域位置之间的间隔,单位为时隙;为一个系统帧内的时隙数,SFNSSB_i为SSB所在系统帧的编号,表示向下取整。
进一步地,终端根据获取到的OffsetSIB19,通过以下根据以下公式确定SIB19的调度信息的搜索空间的系统帧SFN1和起始时隙n1
n1=n0+OffsetSIB19
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n0为SIB1的调度信息的搜索空间的起始时隙的编号,为一个系统帧内的时隙数,SFNSSB_i为SSB所在系统帧的编号,表示向下取整。
以SSB的索引i=0、SIB1的调度信息的搜索空间的配置信息对应于表1中的索引0,SCS=30kHz为例,μ=1,2μ=2,O=4,M=2,OffsetSIB19=1。在此情况下,n0=4*2+0*2=8,n1=8+1=9。当i的取值发生变化,SSB、SIB1和SIB19的时域模式可以如图6的(a)图所示。
以SSB的索引i=1、SIB1的调度信息的搜索空间的配置信息对应于表1中的索引0,SCS=30kHz为例,μ=1,2μ=2,O=4,M=2,OffsetSIB19=1。在此情况下,n0=4*2+1*2=10,n1=10+1=11。当i的取值发生变化,SSB、SIB1和SIB19的时域模式可以如图6的(b)图所示。
需要说明的是,基站根据选择的SIB1或SIB19的调度信息的搜索空间的配置信息,确定发送SIB1或SIB19的调度信息的搜索空间的方式与终端类似,不再详述。
场景3
在场景3中,SIB19的调度信息的搜索空间和SIB1的调度信息的搜索空间相同,通过不同的加扰序列对SIB19的调度信息和SIB1的调度信息进行区分。在此情况下,基站无需向终端额外指示OSIB19、MSIB19或OffsetSIB19,也可以理解为,SIB19的调度信息的搜索空间的配置信息复用SIB1的调度信息的搜索空间的配置信息,终端使用不同的加扰序列,在根据SIB1的调度信息的搜索空间的配置信息确定的搜索空间上,检测采用不同的加扰序列加扰的调度信息。
以SIB19的调度信息和SIB1的调度信息均采用SIB1的调度信息的搜索空间(即Type0-PDCCH CSS),SIB1的调度信息Type0-PDCCH通过SI-RNTI进行加扰,SIB19调度信息Type0-PDCCH通过新增的NTN-RNTI进行加扰为例。
终端可以根据SIB1的调度信息的搜索空间的配置信息,从SIB1的调度信息的搜索空间的参数表格获得到SIB1的调度信息的搜索空间的O和M。
示例性地,表5示出了SIB1的调度信息的搜索空间的参数表格的一种形式。当然,该参数表格还可以是其他形式,例如,参数表格为表5中任意一行或者多行与表5中任意一列或者多列的组合等,不予限制。
表5
需要说明的是,表5中的各参数的取值仅为示例,也可以是其他合理的取值,不予限制。
进一步地,终端根据获取到的O和M,通过以下公式确定SIB1的调度信息的搜索空间的系统帧的编号SFN0和起始时隙的编号n0
则SFN0=SFNSSB_i+1;
则SFN0=SFNSSB_i
其中,O为SSB对应的CORESET0相对于SSB所在系统帧的起始位置的偏移,单位为时隙;μ为用于确定子载波间隔的信息;2μ为1毫秒内的时隙数;i为SSB的索引;为半帧内最大的候选SSB数量;M为相邻两个SSB对应的CORESET0的时域位置之间的间隔,单位为时隙;为一个系统帧内的时隙数,SFNSSB_i为SSB所在系统帧的编号,表示向下取整。
进一步地,终端从SFN0的时隙n0开始监听2个时隙,使用SI-RNTI监听和接收采用SI-RNTI加扰的Type0-PDCCH,使用NTN-RNTI监听和接收NTN-RNTI加扰的Type0-PDCCH,从而获取小区的系统信息和星历信息。
以SSB的索引i=0、SIB1的调度信息的搜索空间的配置信息对应于表5中的索引0,SCS=30kHz为例,μ=1,2μ=2,O=4,M=2。在此情况下,n0=4*2+0*2=8。终端从时隙8开始监听2个时隙,使用SI-RNTI监听和接收采用SI-RNTI加扰的Type0-PDCCH,使用NTN-RNTI监听和接收NTN-RNTI加扰的Type0-PDCCH,从而获取小区的系统信息和星历信息。当i的取值发生变化,SSB、SIB1和SIB19的一种时域模式可以如图6的(a)图所示。
此外,需要指出的是,本申请的各实施例并不限定SIB1的调度信息搜索空间的频域位置和SIB19的调度信息的搜索空间的频域位置。SIB19的调度信息的搜索空间的频域位置与SIB1的调度信息搜索空间的频域位置可以相同,也可以不同,不予限制。
上文结合图2至图6,详细描述了本申请提供的通信方法,下面将结合图7至图8,详细描述本申请的装置实施例。
可以理解的是,为了实现上述实施例中功能,图7或图8中的装置包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本申请中所公开的实施例描述的各示例的单元及方法步骤,本申请能够以硬件或硬件和计算机软件相结合的形式来实现。
图7和图8为本申请的实施例提供的可能的装置的结构示意图。这些装置可以用于实现上述方法实施例中终端和/或网络设备的功能,因此也能实现上述方法实施例所具备的有益效果。
如图7所示,装置70包括收发单元11和处理单元12。
当装置70用于实现上述方法实施例中终端的功能时,收发单元11用于:接收第一SSB,所述第一SSB包括第一配置信息,所述第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,所述第一调度信息用于调度第一SIB,所述第一SIB为SIB1以外的信息块,所述第一SIB用于承载与所 述终端的随机接入相关的信息。处理单元12用于:根据所述第一配置信息,确定所述第一搜索空间的时域位置。收发单元11还用于:在所述第一搜索空间的时域位置上检测所述第一调度信息。
可选地,处理单元12具体用于:根据所述第一配置信息,获取第一偏移和第一间隔,所述第一偏移为所述第一SIB的CORESET相对于所述第一SSB所在系统帧的起始位置的偏移,所述第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔;根据所述第一偏移和所述第一间隔,确定所述第一搜索空间的时域位置。
可选地,所述第一SSB还包括所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号。处理单元12具体用于:根据所述第一偏移、所述第一间隔、所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号,确定所述第一搜索空间的时域位置,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙,
所述第一时隙的编号满足:
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,O1为所述第一偏移,μ为所述用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M1为所述第一间隔,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
可选地,所述第一偏移和所述第一间隔属于第一表格;或者,所述第一偏移和所述第一间隔不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
可选地,所述第一偏移O1满足:O1=O±1/2μ,其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,所述CORESET0为SIB1对应的CORESET。
可选地,处理单元12具体用于:根据所述第一配置信息,获取第三偏移,所述第三偏移为所述第一搜索空间的起始时隙与第二调度信息的第二搜索空间的起始时隙之间的偏移,所述第二调度信息用于调度所述SIB1;根据所述第三偏移,确定所述第一搜索空间的时域位置。
可选地,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
所述第一时隙的编号满足:n1=n0+Offset1
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,n0为所述第二搜索空间的起始时隙的编号,Offset1为所述第三偏移,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
可选地,所述第三偏移属于第一表格;或者,所述第三偏移不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
可选地,所述第三偏移为1个时隙。
可选地,所述第一搜索空间的时域位置与第二调度信息的第二搜索空间的时域位置相同,所述第二调度信息用于调度所述SIB1;所述终端在所述第一搜索空间的时域位置上检测所述第一调度信息,包括:所述终端使用第一加扰序列在所述第一搜索空间的时域位置上检测所述第一调度信息,所述第一调度信息使用所述第一加扰序列加扰,所述第一加扰序列与所述第二调度信息使用的第二加扰序列不同。
可选地,所述第二搜索空间的起始时隙的编号n0满足:
其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整,所述CORESET0为SIB1对应的CORESET。
可选地,所述第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息,所述第二调度信息用于调度所述SIB1;或者,所述第一配置信息为所述第一搜索空间的时域位置的配置信息。
可选地,所述第一SIB包括SIB19,所述SIB19用于承载与卫星星历相关的信息。
当装置70用于实现上述方法实施例中网络设备的功能时,收发单元11用于:发送第一SSB,所述第一SSB包括第一配置信息,所述第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,所述第一调度信息用于调度第一SIB,所述第一SIB为SIB1以外的信息块,所述第一SIB用于承载与所述终端的随机接入相关的信息;在所述第一搜索空间的时域位置上发送所述第一调度信息。
可选地,所述第一配置信息用于获取第一偏移和第一间隔,所述第一偏移为所述第一SIB的CORESET相对于所述第一SSB所在系统帧的起始位置的偏移,所述第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔。
可选地,所述第一SSB还包括所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙,
所述第一时隙的编号满足:
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,O1为所述第一偏移,μ为所述用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M1为所述第一间隔,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
可选地,所述第一偏移和所述第一间隔属于第一表格;或者,所述第一偏移和所述第一间隔不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
可选地,所述第一偏移O1满足:O1=O±1/2μ,其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,所述CORESET0为SIB1对应的CORESET。
可选地,所述第一配置信息用于获取第三偏移,所述第三偏移为所述第一搜索空间的起始时隙与 第二调度信息的第二搜索空间的起始时隙之间的偏移,所述第二调度信息用于调度所述SIB1。
可选地,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
所述第一时隙的编号满足:n1=n0+Offset1
所述第一系统帧的编号满足:
则SFN1=SFNSSB_i+1;
则SFN1=SFNSSB_i
其中,n1为所述第一时隙的编号,n0为所述第二搜索空间的起始时隙的编号,Offset1为所述第三偏移,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
可选地,所述第三偏移属于第一表格;或者,所述第三偏移不属于第一表格;其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
可选地,所述第三偏移为1个时隙。
可选地,所述第一搜索空间的时域位置与第二调度信息的第二搜索空间的时域位置相同,所述第二调度信息用于调度所述SIB1,所述第一调度信息使用所述第一加扰序列加扰,所述第一加扰序列与所述第二调度信息使用的第二加扰序列不同。
可选地,所述第二搜索空间的起始时隙的编号n0满足:
其中,O为第二偏移,所述第二偏移为所述第一SSB对应的CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整,所述CORESET0为SIB1对应的CORESET。
可选地,所述第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息,所述第二调度信息用于调度所述SIB1;或者,所述第一配置信息为所述第一搜索空间的时域位置的配置信息。
可选地,所述第一SIB包括SIB19,所述SIB19用于承载与卫星星历相关的信息。
关于上述收发单元11和处理单元12更详细的描述,可参考上述方法实施例中的相关描述,在此不再说明。
如图8示,装置80包括处理器21。处理器21与存储器23耦合,存储器23用于存储指令。当装置80用于实现上文所述的方法时,处理器21用于执行存储器23中的指令,以实现上述处理单元12的功能。
可选地,装置80还包括存储器23。
可选地,装置80还包括接口电路22。处理器21和接口电路22之间相互耦合。可以理解的是,接口电路22可以为收发器或输入输出接口。当装置80用于实现上文所述的方法时,处理器21用于执行指令,以实现上述处理单元12的功能,接口电路22用于实现上述收发单元11的功能。
示例性地,当装置80为应用于终端和/或网络设备的芯片时,该芯片实现上述方法实施例中终端和/或网络设备的功能。该芯片从终端和/或网络设备中的其它模块(如射频模块或天线)接收信息,该信息是其他装置发送给终端和/或网络设备的;或者,该芯片向终端和/或网络设备中的其它模块(如射频模块或天线)发送信息,该信息是终端和/或网络设备发送给其他装置的。
本申请还提供一种通信装置,包括处理器,该处理器与存储器耦合,存储器用于存储计算机程序或指令和/或数据,处理器用于执行存储器存储的计算机程序或指令,或读取存储器存储的数据,以执 行上文各方法实施例中的方法。可选地,处理器为一个或多个。可选地,该通信装置包括存储器。可选地,存储器为一个或多个。可选地,该存储器与该处理器集成在一起,或者分离设置。
本申请还提供一种计算机可读存储介质,其上存储有用于实现上述各方法实施例中由终端和/或网络设备执行的方法的计算机指令。
本申请还提供一种计算机程序产品,包含指令,该指令被计算机执行时以实现上述各方法实施例中由终端和/或网络设备执行的方法。
本申请还提供一种通信系统,该通信系统包括上文各实施例中的终端和/或网络设备中至少一个。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例,此处不再赘述。
可以理解的是,本申请的实施例中的处理器可以是中央处理单元(central processing unit,CPU),还可以是其它通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现场可编程门阵列(field programmable gate array,FPGA)或者其它可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合。通用处理器可以是微处理器,也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现,也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘、只读光盘存储器(compact disc read-only memory,CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,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。当然,存储介质也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。另外,该ASIC可以位于终端和/或网络设备中。当然,处理器和存储介质也可以作为分立组件存在于终端和/或网络设备中。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时,全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,例如,软盘、硬盘、磁带;也可以是光介质,例如,数字视频光盘;还可以是半导体介质,例如,固态硬盘。
在本申请的各个实施例中,如果没有特殊说明以及逻辑冲突,不同的实施例之间的术语和/或描述具有一致性、且可以相互引用,不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
可以理解的是,在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分,并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定。
除非另有说明,本申请实施例所使用的所有技术和科学术语与本申请的技术领域的技术人员通常理解的含义相同。本申请中所使用的术语只是为了描述具体的实施例的目的,不是旨在限制本申请的范围。应理解,上述为举例说明,上文的例子仅仅是为了帮助本领域技术人员理解本申请实施例,而非要将申请实施例限制于所示例的具体数值或具体场景。本领域技术人员根据上文所给出的例子,显然可以进行各种等价的修改或变化,这样的修改和变化也落入本申请实施例的范围内。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (32)

  1. 一种通信方法,其特征在于,所述方法包括:
    终端接收第一同步信号/物理广播信道块SSB,所述第一SSB包括第一配置信息,所述第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,所述第一调度信息用于调度第一系统信息块SIB,所述第一SIB为系统信息块1 SIB1以外的信息块,所述第一SIB用于承载与所述终端的随机接入相关的信息;
    所述终端根据所述第一配置信息,确定所述第一搜索空间的时域位置;
    所述终端在所述第一搜索空间的时域位置上检测所述第一调度信息。
  2. 根据权利要求1所述的方法,其特征在于,所述终端根据所述第一配置信息,确定所述第一搜索空间的时域位置,包括:
    所述终端根据所述第一配置信息,获取第一偏移和第一间隔,所述第一偏移为所述第一SIB的控制资源集CORESET相对于所述第一SSB所在系统帧的起始位置的偏移,所述第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔;
    所述终端根据所述第一偏移和所述第一间隔,确定所述第一搜索空间的时域位置。
  3. 根据权利要求2所述的方法,其特征在于,所述第一SSB还包括所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号;
    所述终端根据所述第一偏移和所述第一间隔,确定所述第一搜索空间的时域位置,包括:
    所述终端根据所述第一偏移、所述第一间隔、所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号,确定所述第一搜索空间的时域位置,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙,
    所述第一时隙的编号满足:
    所述第一系统帧的编号满足:
    则SFN1=SFNSSB_i+1;
    则SFN1=SFNSSB_i
    其中,n1为所述第一时隙的编号,O1为所述第一偏移,μ为所述用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M1为所述第一间隔,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
  4. 根据权利要求2或3所述的方法,其特征在于,
    所述第一偏移和所述第一间隔属于第一表格;或者,所述第一偏移和所述第一间隔不属于第一表格;
    其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
  5. 根据权利要求2至4中任一项所述的方法,其特征在于,
    所述第一偏移O1满足:O1=O±1/2μ,其中,O为第二偏移,所述第二偏移为所述第一SSB对应的控制资源集合0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,所述CORESET0为SIB1对应的控制资源集CORESET。
  6. 根据权利要求1所述的方法,其特征在于,所述终端根据所述第一配置信息,确定所述第一搜索空间的时域位置,包括:
    所述终端根据所述第一配置信息,获取第三偏移,所述第三偏移为所述第一搜索空间的起始时隙 与第二调度信息的第二搜索空间的起始时隙之间的偏移,所述第二调度信息用于调度所述SIB1;
    所述终端根据所述第三偏移,确定所述第一搜索空间的时域位置。
  7. 根据权利要求6所述的方法,其特征在于,
    所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
    所述第一时隙的编号满足:n1=n0+Offset1
    所述第一系统帧的编号满足:
    则SFN1=SFNSSB_i+1;
    则SFN1=SFNSSB_i
    其中,n1为所述第一时隙的编号,n0为所述第二搜索空间的起始时隙的编号,Offset1为所述第三偏移,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
  8. 根据权利要求6或7所述的方法,其特征在于,
    所述第三偏移属于第一表格;或者,所述第三偏移不属于第一表格;
    其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的控制资源集CORESET。
  9. 根据权利要求6至8中任一项所述的方法,其特征在于,所述第三偏移为1个时隙。
  10. 根据权利要求1所述的方法,其特征在于,所述第一搜索空间的时域位置与第二调度信息的第二搜索空间的时域位置相同,所述第二调度信息用于调度所述SIB1;
    所述终端在所述第一搜索空间的时域位置上检测所述第一调度信息,包括:
    所述终端使用第一加扰序列在所述第一搜索空间的时域位置上检测所述第一调度信息,所述第一调度信息使用所述第一加扰序列加扰,所述第一加扰序列与所述第二调度信息使用的第二加扰序列不同。
  11. 根据权利要求6至10中任一项所述的方法,其特征在于,所述第二搜索空间的起始时隙的编号n0满足:
    其中,O为第二偏移,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整,所述CORESET0为SIB1对应的控制资源集CORESET。
  12. 根据权利要求1至11中任一项所述的方法,其特征在于,
    所述第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息,所述第二调度信息用于调度所述SIB1;或者,
    所述第一配置信息为所述第一搜索空间的时域位置的配置信息。
  13. 根据权利要求1至12中任一项所述的方法,其特征在于,
    所述第一SIB包括SIB19,所述SIB19用于承载与卫星星历相关的信息。
  14. 一种通信方法,其特征在于,所述方法包括:
    网络设备发送第一同步信号/物理广播信道块SSB,所述第一SSB包括第一配置信息,所述第一配置信息用于确定第一调度信息的第一搜索空间的时域位置,所述第一调度信息用于调度第一系统信息块SIB,所述第一SIB为系统信息块1 SIB1以外的信息块,所述第一SIB用于承载与所述终端的随机接入相关的信息;
    所述网络设备在所述第一搜索空间的时域位置上发送所述第一调度信息。
  15. 根据权利要求14所述的方法,其特征在于,
    所述第一配置信息用于获取第一偏移和第一间隔,所述第一偏移为所述第一SIB的控制资源集CORESET相对于所述第一SSB所在系统帧的起始位置的偏移,所述第一间隔为相邻两个SSB对应的第一SIB的CORESET的时域位置之间的间隔。
  16. 根据权利要求15所述的方法,其特征在于,
    所述第一SSB还包括所述第一SSB的索引、用于确定子载波间隔的信息、以及所述第一SSB所在系统帧的编号,所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙,
    所述第一时隙的编号满足:
    所述第一系统帧的编号满足:
    则SFN1=SFNSSB_i+1;
    则SFN1=SFNSSB_i
    其中,n1为所述第一时隙的编号,O1为所述第一偏移,μ为所述用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M1为所述第一间隔,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
  17. 根据权利要求15或16所述的方法,其特征在于,
    所述第一偏移和所述第一间隔属于第一表格;或者,所述第一偏移和所述第一间隔不属于第一表格;
    其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的CORESET。
  18. 根据权利要求15至17中任一项所述的方法,其特征在于,
    所述第一偏移O1满足:O1=O±1/2μ,其中,O为第二偏移,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,所述CORESET0为SIB1对应的控制资源集CORESET。
  19. 根据权利要求14所述的方法,其特征在于,
    所述第一配置信息用于获取第三偏移,所述第三偏移为所述第一搜索空间的起始时隙与第二调度信息的第二搜索空间的起始时隙之间的偏移,所述第二调度信息用于调度所述SIB1。
  20. 根据权利要求19所述的方法,其特征在于,
    所述第一搜索空间的时域位置的起始时隙为第一系统帧的第一时隙:
    所述第一时隙的编号满足:n1=n0+Offset1
    所述第一系统帧的编号满足:
    则SFN1=SFNSSB_i+1;
    则SFN1=SFNSSB_i
    其中,n1为所述第一时隙的编号,n0为所述第二搜索空间的起始时隙的编号,Offset1为所述第三偏移,为一个系统帧内的时隙数,SFN1为所述第一系统帧的编号,SFNSSB_i为所述第一SSB所在系统帧的编号,表示向下取整。
  21. 根据权利要求19或20所述的方法,其特征在于,
    所述第三偏移属于第一表格;或者,所述第三偏移不属于第一表格;
    其中,所述第一表格为第二偏移和第二间隔所在的表格,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,所述CORESET0为SIB1对应的控制资源集CORESET。
  22. 根据权利要求19至21中任一项所述的方法,其特征在于,所述第三偏移为1个时隙。
  23. 根据权利要求14所述的方法,其特征在于,所述第一搜索空间的时域位置与第二调度信息的第二搜索空间的时域位置相同,所述第二调度信息用于调度所述SIB1,所述第一调度信息使用所述第一加扰序列加扰,所述第一加扰序列与所述第二调度信息使用的第二加扰序列不同。
  24. 根据权利要求19至23中任一项所述的方法,其特征在于,所述第二搜索空间的起始时隙的编号n0满足:
    其中,O为第二偏移,所述第二偏移为所述第一SSB对应的控制资源集0 CORESET0相对于所述第一SSB所在系统帧的起始位置的偏移,μ为用于确定子载波间隔的信息,2μ为1毫秒内的时隙数,i为所述第一SSB的索引,为半帧内最大的候选SSB数量,M为第二间隔,所述第二间隔为相邻两个SSB对应的CORESET0的时域位置之间的间隔,为一个系统帧内的时隙数,表示向下取整,所述CORESET0为SIB1对应的控制资源集CORESET。
  25. 根据权利要求14至24中任一项所述的方法,其特征在于,
    所述第一配置信息为第二调度信息的第二搜索空间的时域位置的配置信息,所述第二调度信息用于调度所述SIB1;或者,
    所述第一配置信息为所述第一搜索空间的时域位置的配置信息。
  26. 根据权利要求14至25中任一项所述的方法,其特征在于,
    所述第一SIB包括SIB19,所述SIB19用于承载与卫星星历相关的信息。
  27. 一种通信装置,其特征在于,包括:
    处理器,用于执行存储器中存储的计算机程序,以使得所述装置执行如权利要求1至13中任一项所述的方法,或者执行如权利要求14至26中任一项所述的方法。
  28. 根据权利要求27所述的装置,其特征在于,所述装置还包括所述存储器。
  29. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质上存储有计算机程序,当所述计算机程序在计算机上运行时,使得所述计算机执行如权利要求1至13中任一项所述的方法,或者执行如权利要求14至26中任一项所述的方法。
  30. 一种计算机程序产品,其特征在于,所述计算机程序产品包括用于执行如权利要求1至13中任一项所述的方法的指令,或者包括执行如权利要求14至26中任一项所述的方法的指令。
  31. 一种通信系统,其特征在于,包括:
    用于执行如权利要求1至13中任一项所述的方法的终端;
    用于执行如权利要求14至26中任一项所述的方法的网络设备。
  32. 一种芯片,其特征在于,所述芯片包括处理器与通信接口,所述处理器通过所述通信接口读取存储器上存储的指令,执行如权利要求1至13中任一项所述的方法,或者执行如权利要求14至26中任一项所述的方法。
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