WO2023143363A1 - 一种通信方法和装置 - Google Patents

一种通信方法和装置 Download PDF

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Publication number
WO2023143363A1
WO2023143363A1 PCT/CN2023/073125 CN2023073125W WO2023143363A1 WO 2023143363 A1 WO2023143363 A1 WO 2023143363A1 CN 2023073125 W CN2023073125 W CN 2023073125W WO 2023143363 A1 WO2023143363 A1 WO 2023143363A1
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WO
WIPO (PCT)
Prior art keywords
target
group
ssb
repeated transmission
transmission times
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PCT/CN2023/073125
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English (en)
French (fr)
Inventor
雷珍珠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spreadtrum Semiconductor Nanjing Co Ltd
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Spreadtrum Semiconductor Nanjing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Spreadtrum Semiconductor Nanjing Co Ltd filed Critical Spreadtrum Semiconductor Nanjing Co Ltd
Priority to US18/833,069 priority Critical patent/US20250113383A1/en
Priority to EP23746244.5A priority patent/EP4472319A4/en
Publication of WO2023143363A1 publication Critical patent/WO2023143363A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H04W74/0891—Non-scheduled access, e.g. ALOHA using a dedicated channel for access for synchronized access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the present application relates to the technical field of communication, and in particular, to a communication method and a communication device.
  • Embodiments of the present application provide a communication method and device, which can effectively implement uplink coverage enhancement.
  • an embodiment of the present application provides a communication method, which is applied to a first communication device, and the method includes:
  • the first configuration information includes physical random access channel (physical random access channel, PRACH) opportunity (PRACH occasion, RO) information
  • PRACH occasion, RO PRACH occasion, RO
  • the RO information is at least used to determine a target RO group; according to the The target RO group and the first target repeated transmission times send the first message, the target RO group corresponds to a target synchronization signal block (synchronization signal block, SSB), the number of ROs included in the target RO group is N, and the first The target number of repeated transmissions is less than or equal to the N, and the N is an integer greater than 0.
  • SSB target synchronization signal block
  • the SSB shown in the embodiment of the present application may also be called a synchronization/physical broadcast channel block (SS/PBCH block).
  • the first target number of repeated transmissions shown in this embodiment of the present application may be expressed as the number of repeated transmissions of the first message.
  • the target SSB determines the time-frequency resource (i.e., the target RO group) used to send the first message, and the first target number of repeated transmissions determines the number of repeated transmissions used to send the first message, which can be reasonably realized
  • the uplink repeated transmission by the first communication device effectively realizes uplink coverage enhancement.
  • the method before sending the first message according to the target RO group and the first target repeated transmission times, the method further includes: acquiring second configuration information, where the second configuration information is used to Indicating at least one first number of repeated transmission times, the first target number of repeated transmission times is one number of repeated transmission times in the at least one first number of repeated transmission times.
  • the second communication device can enable the first communication device to reasonably determine the first target number of repeated transmissions based on at least one first number of repeated transmissions indicated in the second configuration information.
  • the number of ROs included in the target RO group is the same as the value of the maximum number of repeated transmission times among the at least one first repeated transmission times.
  • the first communication device may determine the number of ROs included in the target RO group based on the maximum number of transmission times among at least one first number of repeated transmission times, so that the RO group can adapt to different times of repeated transmissions.
  • the value of N is configured by the second communication device.
  • resources corresponding to the N ROs included in the target RO group are Continuously, the target RO group is an RO group in at least one RO group, and the at least one RO group is obtained according to the RO information and the N.
  • the method before sending the first message according to the target RO group and the first target repeated transmission times, the method further includes: performing RO grouping according to the N and the RO information to obtain at least one RO groups, resources corresponding to N ROs included in each RO group are continuous in time domain, and the target RO group is one RO group in the at least one RO group.
  • the at least one RO group is an RO group within an association period between the SSB and the RO.
  • the target SSB is an SSB in the SSB candidate set sent by the second communication device, and each SSB in the SSB candidate set sent by the second communication device has a corresponding relationship with an RO group.
  • each RO group in the at least one RO group is first sorted according to the ascending order of the index of the frequency domain resource; and then sorted according to the ascending order of the index of the time domain resource.
  • the SSBs in the SSB candidate set are mapped to the at least one RO group, they are mapped in ascending order of indexes of the SSBs in the SSB candidate set.
  • the SSBs in the SSB candidate set sent by the second communication device correspond to the sequence of the sorted at least one RO group from front to back according to the order of SSB indexes from small to large.
  • the target RO group corresponds to at least one SSB
  • the at least one SSB includes the target SSB
  • the at least one SSB is an SSB in the SSB candidate set sent by the second communication device.
  • the mapping is performed in ascending order of the preamble index corresponding to the target RO group.
  • the ascending order of the at least one SSB index is sequentially mapped to the ascending order of the preamble indexes corresponding to the target RO group.
  • each SSB in the at least one SSB corresponds to at least one preamble, where the index of the preamble corresponding to the SSB with a larger index is greater than the index of the preamble corresponding to the SSB with a smaller index.
  • the at least one preamble is the preamble corresponding to the target RO.
  • the target RO group is determined according to the target SSB, and the target SSB is a signal obtained by the first communication device from a measurement result of the SSB candidate set sent by the second communication device SSBs with quality greater than a preset threshold.
  • the first target number of repeated transmissions is obtained based on at least one of the following information:
  • Signal quality Signal quality, ephemeris information, and location information between the first communication device and the second communication device.
  • the ephemeris information may include ephemeris information of the second communication device, and the location information may include location information between the first communication device and the second communication device.
  • the location information includes a global navigation satellite system (global navigation satellite system, GNSS).
  • the first target number of repeated transmissions may satisfy at least one of the following items: the first target number of repeated transmissions is determined according to the signal quality between the first communication device and the second communication device; the first target number of repeated transmissions The transmission times are obtained according to the ephemeris information; the first target repeated transmission times are obtained according to the Global Navigation Satellite System (GNSS); the first target repeated transmission times are configured by the second communication device.
  • GNSS Global Navigation Satellite System
  • the method further includes: receiving a second message from the second communication device; sending a third message according to a second target number of repeated transmissions, where the second target number of repeated transmissions represents the first Three message retransmission times, the second target retransmission times correspond to the first target retransmission times; receiving a fourth message from the second communication device.
  • the second target number of repeated transmissions is one of at least one second number of repeated transmissions corresponding to the first target number of repeated transmissions.
  • the method before sending the third message according to the second target repeated transmission times, the method further includes: acquiring third configuration information, where the third configuration information is used to configure at least one first repeated transmission The corresponding relationship between the value of each first number of repeated transmission times and the value of the second number of repeated transmission times in the number of transmission times, wherein, the value of each first number of repeated transmission times corresponds to at least one value of the second number of repeated transmission times value.
  • the method before sending the third message according to the second target repeated transmission times, the method further includes: receiving indication information, where the indication information is used to indicate that the first target repeated transmission times corresponds to The second target repeated transmission times in the at least one second repeated transmission times.
  • the indication information is carried by a modulation and coding scheme (modulation and coding scheme, MCS) indication bit field in downlink control information (downlink control information, DCI) scheduling the second message.
  • MCS modulation and coding scheme
  • an embodiment of the present application provides a communication method, which is applied to a second communication device, and the method includes:
  • Sending first configuration information where the first configuration information includes physical random access channel opportunity RO information, where the RO information is at least used to determine a target RO group; receiving a first message, where the first message is carried in the target RO In the group, the number of ROs included in the target RO group is N, and the N is an integer greater than 0; the target SSB is determined according to the target RO group, and the target SSB corresponds to the target RO group; and the target SSB is sent according to the target SSB Second message.
  • the first configuration information includes physical random access channel opportunity RO information, where the RO information is at least used to determine a target RO group
  • the number of ROs included in the target RO group is N, and the N is an integer greater than 0
  • the target SSB is determined according to the target RO group, and the target SSB corresponds to the target RO group
  • the target SSB is sent according to the target SSB Second message.
  • the method further includes: sending second configuration information, where the second configuration information is used to indicate at least one first repeated transmission times, and the at least one first repeated transmission times are used to determine The number of repeated transmission times of the first message.
  • the number of ROs included in the target RO group is the same as the value of the maximum number of repeated transmission times among the at least one first repeated transmission times.
  • the value of N is configured by the second communication device.
  • the resources corresponding to the N ROs included in the target RO group are continuous in the time domain
  • the target RO group is one RO group in at least one RO group
  • the at least An RO group is obtained according to the RO information and the N.
  • the at least one RO group is an RO group within an association period between the SSB and the RO.
  • the target SSB is an SSB in the SSB candidate set sent by the second communication device, and each SSB in the SSB candidate set sent by the second communication device has a corresponding relationship with an RO group.
  • each RO group in the at least one RO group is first sorted according to the ascending order of the index of the frequency domain resource; and then sorted according to the ascending order of the index of the time domain resource.
  • the SSBs in the SSB candidate set are mapped to the at least one RO group, they are mapped in ascending order of indexes of the SSBs in the SSB candidate set.
  • the target RO group corresponds to at least one SSB
  • the at least one SSB includes the target SSB
  • the at least one SSB is an SSB in the SSB candidate set sent by the second communication device.
  • the mapping is performed in ascending order of the preamble index corresponding to the target RO group.
  • the method further includes: sending third configuration information, where the third configuration information is used to configure the value of each first repeated transmission number in the at least one first repeated transmission number Correspondence between the value of the second number of repeated transmission times, and the correspondence between the value of each of the first number of repeated transmissions in the at least one first number of repeated transmissions and the value of the second number of repeated transmissions The relationship is used to determine the number of repeated transmissions of the third message.
  • the method further includes: sending indication information, where the indication information is used to indicate a second target number of repeated transmissions in at least one second number of repeated transmissions corresponding to the first number of repeated transmissions,
  • the first target number of repeated transmissions is the number of repeated transmissions of the first message
  • the second target number of repeated transmissions is the number of repeated transmissions of the third message.
  • the indication information is carried by a modulation and coding scheme MCS indication bit field in the downlink control information DCI scheduling the second message.
  • the embodiment of the present application provides a communication device, configured to execute the method in the first aspect or any possible implementation manner of the first aspect.
  • the communication device includes a unit for performing the method in the first aspect or any possible implementation manner of the first aspect.
  • the embodiment of the present application provides a communication device, configured to execute the method in the second aspect or any possible implementation manner of the second aspect.
  • the communication device includes a unit for performing the method in the second aspect or any possible implementation manner of the second aspect.
  • the above communication device may include a transceiver unit and a processing unit.
  • an embodiment of the present application provides a communication device, where the communication device includes a processor, configured to execute the method described in the first aspect or any possible implementation manner of the first aspect.
  • the processor is used to execute a program stored in the memory, and when the program is executed, the method shown in the first aspect or any possible implementation manner of the first aspect is executed.
  • the memory is located outside the communication device.
  • the memory is located in the above communication device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • the communication device further includes a transceiver, where the transceiver is configured to receive a signal or send a signal.
  • an embodiment of the present application provides a communication device, where the communication device includes a processor configured to execute the method described in the second aspect or any possible implementation manner of the second aspect.
  • the processor is used to execute the program stored in the memory, and when the program is executed, the method shown in the above second aspect or any possible implementation manner of the second aspect is executed.
  • the memory is located outside the communication device.
  • the memory is located in the above communication device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • the communication device further includes a transceiver, where the transceiver is configured to receive a signal or send a signal.
  • the embodiment of the present application provides a communication device, the communication device includes a logic circuit and an interface, the logic circuit is coupled to the interface; the interface is used to input signals and/or output signals, and the logic circuit It is used to execute code instructions, so that the first aspect or any possible implementation manner of the first aspect is executed.
  • the embodiment of the present application provides a communication device, the communication device includes a logic circuit and an interface, the logic circuit is coupled to the interface; the interface is used to input signals and/or output signals, and the logic circuit For executing code instructions, so that the second aspect or any possible implementation manner of the second aspect is executed.
  • the embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program, and when it is run on a computer, any of the above-mentioned first aspect or the first aspect is possible The method shown in the implementation is executed.
  • the embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program, and when it is run on a computer, it makes possible any of the above-mentioned second aspect or the second aspect.
  • the method shown in the implementation is executed.
  • the embodiment of the present application provides a computer program product, the computer program product includes a computer program or computer code, and when it is run on a computer, the above first aspect or any possible implementation of the first aspect The method shown is executed.
  • the embodiment of the present application provides a computer program product, the computer program product includes a computer program or computer code, when it is run on a computer, it makes the second aspect or any possible implementation of the second aspect The method shown is executed.
  • an embodiment of the present application provides a computer program.
  • the computer program When the computer program is run on a computer, the method shown in the above-mentioned first aspect or any possible implementation manner of the first aspect is executed.
  • an embodiment of the present application provides a computer program.
  • the computer program When the computer program is run on a computer, the method shown in the second aspect or any possible implementation manner of the second aspect is executed.
  • the embodiment of the present application provides a module device, the module device includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for the The module device provides electric energy; the storage module is used to store data and instructions; the communication module is used for internal communication of the module device, or for the module device to communicate with external devices; the chip module The group is used to execute the method described in the first aspect or any possible implementation manner of the first aspect.
  • the embodiment of the present application provides a module device, the module device includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for the The module device provides electric energy; the storage module is used to store data and instructions; the communication module is used for internal communication of the module device, or for the module device to communicate with external devices; the chip module The group is used to execute the method described in the second aspect or any possible implementation manner of the second aspect.
  • an embodiment of the present application provides a wireless communication system
  • the wireless communication system includes a terminal device and a network device
  • the terminal device is used to implement the above-mentioned first aspect or any possible implementation of the first aspect
  • a method the network device is configured to execute the method shown in the second aspect or any possible implementation manner of the second aspect.
  • Fig. 1a is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Fig. 1b is a schematic diagram of another communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a random access method provided in an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a communication method provided in an embodiment of the present application.
  • FIG. 4a and FIG. 4b are schematic diagrams of an RO configuration provided by an embodiment of the present application.
  • FIG. 5a and FIG. 5b are schematic diagrams of an RO grouping provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 7 to 9 are schematic structural diagrams of a communication device provided by an embodiment of the present application.
  • an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application.
  • the occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.
  • At least one (item) means one or more
  • “multiple” means two or more
  • “at least two (items)” means two or three and three
  • “and/or” is used to describe the association relationship of associated objects, which means that there can be three kinds of relationships, for example, "A and/or B” can mean: only A exists, only B exists, and A and B exist at the same time A case where A and B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • “At least one of the following” or similar expressions refer to any combination of these items. For example, at least one item (piece) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c ".
  • the communication method provided by this application can be applied to various communication systems, for example, it can be an Internet of Things (Internet of Things, IoT) system, a narrowband Internet of Things (NB-IoT) system, a long term evolution (long term evolution, LTE) system, or 5G system, and the sixth generation (6th-generation, 6G) system etc.
  • IoT Internet of Things
  • NB-IoT narrowband Internet of Things
  • LTE long term evolution
  • 5G Fifth Generation
  • 6G sixth generation
  • the method provided in the embodiment of the present application may also be applied to a non-terrestrial network (non-terrestrial networks, NTN) communication system.
  • NTN non-terrestrial networks
  • FIG. 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system includes: network equipment and terminal equipment. It can be understood that FIG. 1a only exemplarily shows three terminal devices, however, the number of terminal devices shown in FIG. 1a should not be understood as a limitation to this embodiment of the present application.
  • the network device may be a next generation node B (next generation node B, gNB), a next generation evolved base station (next generation evolved nodeB, ng-eNB), or a network device (for example, a base station) in future 6G communications wait.
  • the network device may be any device with a wireless transceiver function, including but not limited to the above-mentioned base stations (including base stations deployed on satellites).
  • the network device may also be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless local area network (wireless fidelity, WiFi) system.
  • the network device may be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • cloud radio access network cloud radio access network, CRAN
  • the network device may be a wearable device or a vehicle-mounted device.
  • the network device may also be a small station, a transmission reception point (transmission reception point, TRP) (or may also be called a transmission point), and the like. It can be understood that the network device may also be a base station in a future evolving public land mobile network (public land mobile network, PLMN), etc.
  • TRP transmission reception point
  • PLMN public land mobile network
  • a base station may consist of a centralized unit (CU) and a distributed unit (DU). That is, the functions of the base station in the access network are split, and part of the functions of the base station are deployed in a CU, and the remaining functions are deployed in the DU. And multiple DUs share one CU, which can save costs and facilitate network expansion.
  • the CU can also be divided into CU-control plane (control plane, CP) and CU-user plane (user plan, UP).
  • the base station may also be an open radio access network (open radio access network, ORAN) architecture, etc., and this application does not limit the specific type of the base station.
  • the network device shown in this embodiment of the present application may also be a satellite or a ground station as shown in FIG. 1b.
  • the satellite when the satellite works in the transparent transmission mode, the satellite has the function of relaying and forwarding.
  • the ground station has the function of the base station or part of the functions of the base station.
  • the ground station can be regarded as the base station.
  • the base station can be deployed separately from the ground station, so the time delay of the feeder link includes two parts: the time delay from the satellite to the ground station and from the ground station to the base station.
  • the satellite When the satellite is working in regenerative mode, the satellite has data processing capability, and has the function of the base station or part of the function of the base station. At this time, the satellite can be regarded as the base station.
  • the terminal equipment may also be called user equipment (user equipment, UE), terminal, and so on.
  • a terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as on a ship.
  • the terminal device can be a mobile phone (terminal device 1 and terminal device 3 shown in Figure 1a), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an enhanced Augmented reality (AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.
  • VR virtual reality
  • AR enhanced Augmented reality
  • the terminal device may also be a terminal device in a 6G network or a terminal device in a future evolved PLMN.
  • the terminal equipment shown in this application can be Vehicles in the network (such as the terminal device 2 in Figure 1a).
  • the terminal device is referred to as UE below to describe the method provided by the embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • Fig. 2 is a schematic flowchart of a random access method provided by an embodiment of the present application.
  • the UE can complete downlink synchronization by reading a master information block (master indication block, MIB) and/or a system information block (system information block, SIB) (such as SIB1).
  • MIB master indication block
  • SIB system information block
  • the UE can determine the resource it uses to send the preamble to the network device to indicate its intention to access the network device.
  • the UE can send a message 1 (message1, Msg1) to the network device through its determined resources, and the Msg1 can also be called a random access preamble.
  • the network device can send a random access-radio network temporary identity (random access-radio network temporary identity, RA-RNTI) scrambled message 2 (message2, Msg2) to the UE, and the Msg2 also It may be called a random access response (random access response, RAR) message.
  • RA-RNTI random access-radio network temporary identity
  • RAR random access response
  • the UE can use RA-RNTI to monitor Msg2 from the network device to descramble the Msg2.
  • Msg2 may include timing advance (timing advance, TA), temporary cell-radio network temporary identifier (temporary cell-RNTI, TC-RNTI), power adjustment, and resource indication of UE sending message 3 (message3, Mgs3).
  • Msg3 may carry a unique user identifier.
  • the network device After receiving the UE's Msg3, the network device returns a conflict resolution message, also called message 4 (messag4, Msg4), to the UE that has successfully accessed.
  • the network device will carry the unique user identifier in Msg3 in the conflict resolution message to indicate the UE that has successfully accessed, while other UEs that have not successfully accessed will re-initiate random access.
  • the random access method shown in FIG. 2 is only an example, and should not be interpreted as a limitation to this embodiment of the present application.
  • RTT round-trip-delay
  • propagation delay variance eg, up to 16ms for geostationary satellites
  • FIG. 2 For the random access method in the NTN, reference may also be made to FIG. 2 , which will not be described in detail here.
  • Embodiments of the present application provide a communication method and device, which can effectively implement uplink coverage enhancement through repeated transmission.
  • the first target number of repeated transmissions indicates the number of repeated transmissions of the first message
  • the first target number of repeated transmissions indicates the number of repeated transmissions of the first message. It can be understood that: the first target number of repeated transmissions indicates the total number of transmissions of the first message.
  • the first target number of repeated transmissions may be predefined by a standard. For example, the standard may predefine at least one first repeated transmission times, and then the UE autonomously determines the repeated transmission times for transmitting the first message.
  • the first target number of repeated transmissions may be at least one first number of repeated transmissions delivered by the network device (as shown in the following One of at least one number of first repeated transmission times indicated by the configuration information), and then the UE autonomously determines the number of times it transmits the first message.
  • the first target number of repeated transmissions is obtained based on at least one of the following information: channel quality between the UE and the network device, ephemeris information, and location information.
  • the ephemeris information may be the ephemeris information obtained by the network device (such as the satellite communication system shown in FIG. 1b )
  • the location information may be the location information between the UE and the network device, for example, the location information may be obtained through GNSS.
  • the first target number of repeated transmissions is determined according to the signal quality between the UE and the network device.
  • the first target number of repeated transmissions can be is at least one of the first repeated transmission times with a smaller value; if the signal quality between the UE and the network device is poor (for example, the RSRP between the UE and the network device is less than the RSRP threshold), then the first target repeated transmission The number of times may be a transmission number with a larger value among at least one number of first repeated transmission times.
  • the reference signal receiving power reference signal receiving power, RSRP
  • RSRP reference signal receiving power
  • the number of repeated transmissions of the first target is obtained according to the ephemeris information.
  • the UE determines according to the ephemeris information that the distance between the UE and the network device is relatively long (for example, the distance between the UE and the network device is greater than or equal to the distance threshold), then the first target number of repeated transmissions may be at least one first repeated transmission The transfer times that takes a larger value among the transfer times.
  • the UE determines according to the ephemeris information that the distance between the UE and the network device is relatively short (for example, the distance between the UE and the network device is less than the distance threshold), then the first target number of repeated transmissions may be at least one first repeated transmission The number of transfers that takes a smaller value in the number of times.
  • the number of repeated transmission times of the first target is obtained according to the location information.
  • the first target repeated transmission times may be at least one first repeated transmission times The number of transfers that takes a larger value.
  • the UE determines according to the GNSS that the distance between the UE and the network device is relatively short (for example, the distance between the UE and the network device is less than the distance threshold), then the first target repeated transmission times may be at least one of the first repeated transmission times A transfer count with a smaller value.
  • the three situations shown above can be used alone, or the three situations shown above can also be used in combination.
  • the first target number of repeated transmissions may be the one with the smallest value among at least one first number of repeated transmissions number of transfers.
  • the first target repeated transmission times may be at least one of the first repeated transmission times. A small number of transfers.
  • the first target repeated transmission times may be at least one of the first repeated transmission times The maximum number of transfers.
  • the first target number of repeated transmissions is a number of transmissions randomly determined by the UE from at least one first number of repeated transmissions.
  • the UE may determine the first target repeated transmission times from at least one first repeated transmission times based on at least one of the following: determine the first target repeated transmission times according to the signal quality between the UE and the network device; information to determine the first target number of repeated transmissions; determine the first target number of repeated transmissions according to GNSS; from at least one Randomly determine the first target repeated transmission times among the first repeated transmission times.
  • the network device may determine at least one first number of repeated transmissions based on at least one of the following:
  • the network device may determine at least one first number of repeated transmissions at the cell level according to the distance between the closest position to the satellite in the cell coverage area and the satellite and the size of the cell coverage area, wherein the network device may determine at least one number of repeated transmissions at the cell level according to the satellite ephemeris information and The location information of the closest location to the satellite in the cell coverage area determines the distance between the closest location and the satellite.
  • the greater the distance between the satellite and the closest position to the satellite in the coverage area of the cell and the coverage area of the cell the greater the value of at least one first repeated transmission number of the cell level determined by the network device.
  • the network device may determine at least one first number of repeated transmissions at the beam level according to the distance between the satellite and the position closest to the satellite in the coverage area of each beam in the cell, and the size of the coverage area of the beam, that is, to determine At least one first number of repeated transmissions corresponding to each beam, wherein the network device can determine the distance between the nearest position and the satellite according to the satellite ephemeris information and the position information of the position closest to the satellite in the coverage area of each beam size.
  • the greater the distance between the closest position to the satellite in a beam coverage area and the satellite and the coverage area of the beam the greater the value of at least one first repeated transmission times of the beam level determined by the network device.
  • the target RO group corresponds to the target SSB.
  • the target SSB can be understood as an SSB in the SSB candidate set actually sent by the network device.
  • the target SSB may be the SSB with better received signal quality in the SSB candidate set actually sent by the network device, that is, the UE measures the received signal quality of each SSB in the SSB candidate set actually sent by the network device, and then selects the SSB with better received signal quality SSB as target SSB.
  • the target SSB may be the SSB with the best received signal quality in the SSB candidate set actually sent by the network device.
  • the target SSB may be any one of the top three SSBs with received signal quality in the SSB candidate set actually sent by the network device.
  • the target SSB may be any SSB in the SSB candidate set actually sent by the network device whose received signal quality is greater than a preset threshold.
  • the preset threshold is used to measure the signal quality between the UE and the network equipment.
  • the embodiment of the present application does not limit the specific value of the preset threshold.
  • the embodiment of the present application does not limit the specific method for determining the target SSB.
  • RO is a time-frequency resource for carrying a random access preamble (hereinafter referred to as preamble) or a time-frequency resource for carrying Msg1.
  • the RO may also be referred to as a physical random access channel (physical random access channel, PRACH) opportunity.
  • Multiple ROs, the multiple ROs are periodically distributed in the time domain, and this period may be referred to as an RO period (see FIG. 4a for an example), and each period may include one or more ROs.
  • Different ROs can be distinguished by frequency domain resources, that is, resources corresponding to the same time domain resources but different frequency domain resources can be different ROs.
  • Different ROs can also be distinguished by time domain resources, that is, resources corresponding to the same frequency domain resources but different time domain resources can also be different ROs.
  • the number of ROs included in the target RO group is N, and N is an integer greater than 0, and the value of N is greater than or equal to the first target repeated transmission times.
  • the number of ROs included in the target RO group may be the same as the value of any one of the at least one first repeated transmission times.
  • the number of ROs included in the target RO group may be the same as the value of the largest number of repeated transmissions among the at least one first repeated transmission times.
  • the number of ROs included in the target RO group may be the same as the value of the second largest number of repeated transmissions among at least one first number of repeated transmissions, or may be the same as the value of other repeated transmissions. limit.
  • Fig. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application, and the method may be applied to a first communication device and a second communication device.
  • the first communication device may include a terminal device or a chip provided in the terminal device
  • the second communication device may include a network device or a chip provided in the network device.
  • the method may be applied to the communication system shown in FIG. 1a, or the method may be applied to the communication system shown in FIG. 1b, which will not be described in detail here.
  • the method provided in this embodiment of the present application will be described below by using an example in which the first communication device includes a UE and the second communication device includes a network device.
  • the method includes:
  • the network device sends first configuration information, where the first configuration information includes RO information.
  • the UE receives the first configuration information.
  • the network device may send the first configuration information in a broadcast manner.
  • the first configuration information may be included in the SIB.
  • the first configuration information is included in SIB1.
  • the RO information shown in the embodiment of the present application can be understood as configuration information related to RO resources, and the UE can determine the RO in the PRACH cycle according to the RO information.
  • the RO information includes RO time-domain resource configuration information, RO frequency-domain resource configuration information, and an association relationship between SSBs and ROs.
  • RO time domain resource configuration information (that is, PRACH time domain resources used to transmit/carry premble/Msg1, or RO time domain location) includes prach-ConfigurationIndex indication information, as shown in Table 1a.
  • Table 1a defines random access configurations for FR1 (sub-6GHz) and paired spectrum/supplementary uplink. Among them, n f represents the system frame number, x represents the PRACH configuration period, Indicates the number of ROs in a PRACH slot, Indicates the PRACH length.
  • the PRACH configuration index indicated by the RO time domain resource configuration information is 109, the following conditions exist:
  • the random access preamble format adopts A1/B1;
  • the starting position of the time domain RO under the 9th subframe in the system frame starts from the 0th OFDM symbol
  • RACH length is 7 That is, it occupies 7 OFDM symbols.
  • the UE can determine the time domain location of the RO based on the RO time domain configuration information.
  • the RO frequency domain resource configuration information (that is, the PRACH frequency domain resource used to transmit/carry the PRACH premble, or the frequency domain position of the RO) includes the frequency domain size of the RO (that is, the number of PRBs occupied by one RO), and the frequency domain of the RO starts from The starting position (msg1-FrequencyStart) and the number of ROs for frequency domain multiplexing (msg1-FDM).
  • the parameter msg1-FrequencyStart can be used to configure the offset (offset) from the initial frequency domain position of the RO to the initial BWP (intial BWP) or the current active BWP (active BWP) initial frequency domain position; the parameter msg1-FDM The number of ROs that can be used to configure frequency domain multiplexing.
  • the UE can determine the frequency domain position of the RO based on the RO frequency domain configuration information.
  • the association relationship between SSB and RO is used to indicate the number X of SSB associated with each RO, and the value of X can be ⁇ 1/8,1/4,1/2,1,2,4,8,16 ⁇ .
  • the PRACH period (PRACH period) can be as shown in Figure 4a. It can be understood that Fig. 4a exemplarily shows a PRACH cycle. For another example, when the number of SSBs is 4, the number of SSBs associated with each RO is 1/2, and the number of ROs multiplexed in the frequency domain is 2, the PRACH period may be as shown in FIG. 4b. It can be understood that Fig. 4b exemplarily shows two PRACH periods.
  • the method shown in FIG. 3 includes step 302 .
  • the network device sends second configuration information.
  • the UE acquires second configuration information, where the second configuration information is used to indicate at least one first repeated transmission count, where the at least one first repeated transmission count includes the first target repeated transmission count.
  • the at least one first repeated transmission times indicated by the second configuration information may also be understood as: a set of candidate values of transmission times configured by the network device for the UE.
  • the at least one first repeated transmission times are ⁇ n 1 , n 2 , . . . , n m ⁇ , and n 1 to n m are all positive integers.
  • N belongs to a value from n 1 to n m .
  • the specific values of n 1 to n m are not limited in this embodiment of the present application.
  • the embodiment of the present application also makes no limitation on the expressing manner of the at least one first repeated transmission times.
  • the at least one first repeated transmission times is 1 to N.
  • the at least one first repeated transmission times are ⁇ 1, 2, 4 ⁇ .
  • the at least one first repeated transmission times are ⁇ 1, 2, 3, 4 ⁇ .
  • the at least one The first repeated transmission times are ⁇ 1, 2, 4, 6 ⁇ .
  • the at least one first repeated transmission times are ⁇ 2, 4, 6, 8 ⁇ .
  • the at least one first repeated transmission times are ⁇ 2, 3, 4, 5, 6, 7, 8 ⁇ , etc., and specific values of the at least one first repeated transmission times are not listed one by one.
  • the network device may send the second configuration information through the SIB.
  • the network device sends the second configuration information through high-level signaling, and this embodiment of the present application does not limit the specific form of the network device sending the second configuration information.
  • the resources corresponding to the N ROs included in the target RO group are continuous in the time domain, and the target RO group is an RO group in at least one RO group, and the at least one RO group is based on RO information and N get.
  • the target RO group is used to send the first message.
  • the method for determining at least one RO group and the target RO group can be referred to below. Exemplarily, the method shown in FIG. 3 further includes step 303 .
  • the UE performs RO grouping according to the N and the RO information to obtain at least one RO group, and the at least one RO group includes the target RO group.
  • the UE may determine N.
  • the UE may determine the first repeated transmission number with the largest value among the at least one first repeated transmission times indicated in the second configuration information as the number of ROs included in the target RO group.
  • the network may configure the value of N through high-layer signaling.
  • the high-layer signaling may be, for example, radio resource control (radio resource control, RRC) signaling.
  • the UE may group ROs based on the N value and RO information, so as to obtain at least one RO group. For example, the UE may use N consecutive ROs in the time domain as an RO group, so as to obtain at least one RO group.
  • this RO grouping method allows the UE to use the network configuration on the RO group Any one of the first repeated transmission times in the at least one first repeated transmission times takes a value and sends Msg1.
  • the value of N is configured by the network through high-level signaling, in this RO grouping mode, when the UE sends Msg1 on the RO group, the value of the first repeated transmission times used cannot be greater than the N value indicated by the network .
  • Each SSB in the SSB candidate set actually sent by the network device has a corresponding relationship with the RO group. That is, each SSB in the SSB candidate set actually sent by the network device is associated with one or more RO groups in the at least one RO group.
  • one RO group may correspond to one SSB.
  • one RO group may correspond to multiple SSBs.
  • the target RO group shown in the embodiment of the present application may correspond to at least one SSB (assumed to be M SSBs, M is an integer greater than 0), the M SSBs include the target SSB, and the M SSBs are SSB candidates actually sent by the network device Centralized SSB.
  • the number of SSBs corresponding to an RO group can be determined by the parameter SSB-perRACH-occasion in the protocol, or an additional parameter is introduced in system information or RRC signaling to indicate the number of SSBs corresponding to an RO group. It can be understood that the description about the target SSB can be referred to above, and will not be described in detail here.
  • RO group 1 corresponds to one SSB (ie SSB4)
  • RO group 1 corresponds to multiple SSBs (ie SSB0, SSB1 and SSB2)
  • RO group 2 corresponds to multiple SSBs (ie SSB2 and SSB3).
  • the above at least one RO group is an RO group within the association period between the SSB and the RO.
  • each SSB in the SSB candidate set actually sent by the network device has a corresponding relationship with the RO group. That is to say, within one SSB-RO association period, all actually sent SSBs configured by the network device will be associated with one or more RO groups.
  • At least one RO group is first sorted in ascending order according to the frequency domain resource index (ie, the index of the frequency domain resource of the RO group); and then sorted according to the ascending order of the time domain resource index (ie, the index of the time domain resource of the RO group).
  • the time-frequency resource position of at least one RO group after sorting can be referred to in FIG. 5 a .
  • at least one RO group can also be sorted according to the ascending order of the index of the time domain resource first, and then sorted according to the ascending order of the index of the frequency domain resource, or other sorting methods.
  • the groups are first sorted in ascending order of the index of the frequency domain resource, and then sorted in ascending order of the index of the time domain resource as an example for description.
  • each RO group in the at least one RO group can be mapped to the SSB in the order shown above.
  • the arrangement order of the SSB please refer to the following.
  • the UE can quickly know the correspondence between the RO group and the SSB based on the above-mentioned arrangement mode of the RO group and the arrangement mode of the SSB , so that after the target SSB is determined, the target RO group corresponding to the target SSB can be obtained. Furthermore, Msg1 is sent through the target RO group.
  • the mapping relationship between RO groups and SSBs may include: the SSBs in the SSB candidate set actually sent by the network device correspond to the order of the SSB index from small to large and the order of at least one sorted RO group from front to back.
  • RO group 1 can correspond to SSB0
  • RO group 2 can correspond to SSB1
  • RO group 3 can correspond to SSB2.
  • at least one RO group is 6 RO groups, that is, RO group 1 to RO group 6.
  • Each RO group corresponds to 2 SSBs.
  • RO group 1 and RO group 2 can correspond to SSB0
  • RO group 3 and RO group 4 can correspond to SSB1
  • RO group 5 and RO group 6 can correspond to SSB2.
  • the SSBs in the SSB candidate set are mapped to at least one RO group, they may also be mapped in descending order of the indexes of the SSBs in the SSB candidate set, which is not limited in this application.
  • the number of SSBs corresponding to each RO group may be determined by one or more of the following methods:
  • Mode 1 The number of SSBs corresponding to each RO group can be determined by SSB-perRACH-occasion in the protocol.
  • Method 2 The network device configures the number of SSBs corresponding to each RO group through high-level parameters (such as SSB-perRACH-occasion group) (that is, introducing a high-level parameter to indicate the number of SSBs corresponding to each RO group)
  • high-level parameters such as SSB-perRACH-occasion group
  • Method 3 If the number of SSBs corresponding to each RO group (such as SSB-perRACH-occasion group) is configured by the high-level layer, it is configured by the high-level layer. If not configured, it is determined according to the SSB-perRACH-occasion in the protocol.
  • the target RO group corresponds to M SSBs
  • the M SSBs include the target SSBs
  • the M SSBs are SSBs in the SSB candidate set sent by the second communication device.
  • At least one sorted RO group obtained by the UE includes RO group 1, RO group 2, and RO group 3, and the sorted SSB obtained by the UE includes SSB0 to SSB4, then according to the above
  • RO group 1 can correspond to SSB0, SSB1 and SSB2
  • RO group 2 can correspond to SSB2 and SSB3
  • RO group 3 can correspond to SSB4.
  • RO group 1 since it corresponds to three SSBs, it can correspond to SSB0, SSB1, and SSB2 according to the order of preamble indexes corresponding to RO groups from small to large.
  • preambles with indexes 0-15 can be associated with Corresponding to SSB0, preambles with indexes 16-31 may correspond to SSB1, and preambles with indexes 32-47 may correspond to SSB2. It can be understood that the relationship example among the SSB, the RO group and the preamble shown in Table 1b should not be construed as a limitation to the embodiment of the present application.
  • a resource composed of an RO group and a preamble shown in the embodiment of the present application may be called a PRACH resource group.
  • a PRACH resource group may represent the time-frequency resource and preamble index (or preamble index) used by the UE to send Msg1. preamble sequence).
  • preamble sequence For example, referring to Table 1b, RO group 1 and preambles with indexes 0-15 can form 16 PRACH resource groups.
  • the PRACH resource groups that is, RO groups and preambles
  • they are mapped to the PRACH resource groups in descending order according to the index of the SSB.
  • FIG. 5a and FIG. 5b are schematic diagrams of RO grouping provided by the embodiment of the present application.
  • Fig. 5a taking the value of N equal to 6 as an example, after the UE groups ROs, at least one RO group obtained is as shown in Fig. 5a.
  • FIG. 5a only exemplarily shows eight RO groups (RO group 1 to RO group 8 as shown in FIG. It should be understood as a limitation to the embodiments of the present application.
  • the mapping relationship between the eight RO groups and the SSB shown in Figure 5a can be shown in Figure 5b.
  • SSB1 has a mapping relationship with all PRACH resource groups, where all PRACH resource groups refer to RO group 1 and all preambles PRACH resource group.
  • FIG. 5 b does not show the identification of RO groups, for example, RO group 1 corresponds to SSB1 , RO group 2 corresponds to SSB2 , and so on.
  • one RO group is associated with one SSB, and 4 RO resources are multiplexed in the frequency domain, and the number of SSBs actually sent by the network device can be 8. It can be understood that FIG.
  • 5 b is an example showing that one SSB corresponds to one RO group, which should not be construed as a limitation to this embodiment of the present application. It can be understood that the eight SSBs shown in FIG. 5b are only examples, and should not be construed as limiting the embodiment of the present application.
  • the SSBs in the SSB candidate set actually sent by the network device include SSB0 to SSB5, and at least one RO group includes RO group 1 to RO group 3 (for the determination of the time-frequency resource positions of RO group 1 to RO group 3, refer to the above ), SSB0 and SSB1 correspond to RO group 1, SSB2 and SSB3 correspond to RO group 2, and SSB4 and SSB5 correspond to RO group 3.
  • the mapping relationship between SSB and PRACH resource groups can be found in Table 1c.
  • the UE sends the first message according to the target RO group and the first target repeated transmission times.
  • the network device receives the first message.
  • the first target repeated transmission times indicates the repeated transmission times of the first message
  • the target RO group corresponds to the target SSB
  • the target RO group is obtained according to the RO information.
  • the first message shown in this embodiment of the present application may include message 1 (such as Msg1) or a random access preamble.
  • message 1 such as Msg1
  • FIG. 2 For other descriptions about Msg1, reference may be made to FIG. 2 , which will not be described in detail here.
  • the UE determines an SSB whose received signal quality is greater than a preset threshold (eg, RSRP greater than the preset threshold) as the target SSB according to the measurement result of the SSB (such as the RSRP size corresponding to the SSB). Then, according to the mapping relationship between the SSB and the RO group, the target RO group corresponding to the target SSB and the range of the preamble sequence index corresponding to the target SSB are determined. Afterwards, the UE may randomly select a sequence corresponding to the preamble index within the range of the preamble sequence index corresponding to the target SSB as the target preamble (Preamble) code.
  • a preset threshold eg, RSRP greater than the preset threshold
  • the target RO group can be determined to be RO group 1 according to the correspondence shown in Table 1b, and then the index corresponding to the target SSB is 0-15 Select one of the preambles as the target preamble (the preamble carried in the first message). Then according to the signal quality between UE and network equipment, ephemeris information, GNSS positioning information, etc. determine the appropriate first target repeated transmission times (also called PRACH repeated transmission times), and finally send the target preamble (carried in the first message) based on the determined target RO group and the first target repeated transmission times .
  • the appropriate first target repeated transmission times also called PRACH repeated transmission times
  • RO group 1 and preambles with indexes 0-15 can form 16 PRACH resource groups, and the target SSB corresponds to the 16 PRACH resource groups.
  • One of the 16 PRACH resource groups corresponding to the target SSB can be determined as the target PRACH resource group, and then the appropriate first target repetition can be determined according to the signal quality between the UE and the network device, ephemeris information, GNSS positioning information, etc.
  • the UE selects an RO from the determined target RO group according to the determined first target repeated transmission times to send Msg1.
  • how to select an RO in the determined target RO group to send Msg1 has the following two methods:
  • Mode 1 pre-defined rules or configured by network devices. For example, it is stipulated that the UE uses the first S ROs in the target RO group to send the Msg1, where S is the first target repeated transmission times determined by the UE.
  • Mode 2 Select S ROs in the target RO group based on UE implementation to send Msg1, where S is the first target number of repeated transmissions determined by the UE.
  • the measurement of the signal quality between the UE and the network device shown in the embodiment of the present application can be measured by RSRP, or by reference signal receiving quality (reference signal receiving quality, RSRQ) measurement, etc., which is not limited in the embodiment of the present application .
  • the network device may determine the target SSB according to the RO group (ie, the target RO group) where the first message belongs. If the target RO group corresponds to multiple SSBs, the SSB may be further determined in combination with the received preamble. Therefore, the beam with better signal quality between the network device and the UE is learned according to the target SSB, and then the second message is sent according to the target SSB (as shown in FIG. 6 ). For example, the network device may receive the first message sent by the UE in all RO groups, and then determine the RO group in which the first message it receives is located, so as to determine the target SSB. Then send the second message according to the target SSB.
  • the target SSB may be determined the target SSB according to the RO group (ie, the target RO group) where the first message belongs. If the target RO group corresponds to multiple SSBs, the SSB may be further determined in combination with the received preamble. Therefore, the beam with better signal quality between the network device and the
  • the method shown in the embodiment of the present application may include step 301 , step 302 , step 303 and step 304 .
  • the method shown in the embodiment of the present application may include step 301, step 302, and step 304.
  • the UE may directly use the ROs in the target RO group in the previously obtained at least one RO group to send the first message.
  • the method shown in the embodiment of the present application may include step 301 and step 304 .
  • the method shown in FIG. 3 may not include step 302 .
  • the time-frequency resource (that is, the target RO group) used to send the first message is determined by the target SSB, and the number of repeated transmissions used to send the first message is determined by the first target number of repeated transmissions, which can be reasonably implement the terminal Repeated transmission of equipment uplink effectively realizes uplink coverage enhancement.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the communication system to which this method is applied can refer to FIG. 1a and/or FIG. 1b , which will not be described in detail here.
  • the method includes:
  • the network device sends first configuration information, where the first configuration information includes RO information.
  • the UE receives the first configuration information.
  • the method shown in FIG. 6 may include step 602 .
  • the network device sends second configuration information.
  • the UE acquires the second configuration information.
  • the second configuration information is used to indicate at least one first repeated transmission count, and the at least one first repeated transmission count includes a first target repeated transmission count.
  • the method shown in FIG. 6 may include step 603 .
  • the UE performs RO grouping according to the N and the RO information to obtain at least one RO group, and at least one RO group includes the target RO group.
  • the UE sends the first message according to the target RO group and the first target repeated transmission times.
  • the network device receives the first message.
  • step 601 refers to step 301 shown in FIG. 3 , and no further details are given here.
  • step 602 refers to step 302 shown in FIG. 3 .
  • step 604 may refer to step 304 shown in FIG. 3 .
  • the network device sends the second message to the UE, and correspondingly, the UE receives the second message from the network device.
  • the first message may be carried on the target RO group, where the number of ROs included in the target RO group is N, where N is an integer greater than 0.
  • the network device receives the first message, it determines the target SSB according to the RO group carried in the first message.
  • the second message is sent through the target SSB.
  • the second message includes message 2 (Msg2), that is, a random access response message.
  • Msg2 message 2
  • the UE may receive Msg2 scheduled by DCI, that is, after sending Msg1, the UE needs to monitor a physical downlink control channel (physical downlink control channel, PDCCH) to obtain scheduling information (such as DCI) of Msg2, and then according to the scheduling information (such as DCI) receives Msg2.
  • PDCCH physical downlink control channel
  • the UE sends the third message according to the second target number of repeated transmissions, where the second target number of repeated transmissions indicates the number of repeated transmissions of the third message, and the second target number of repeated transmissions corresponds to the first target number of repeated transmissions.
  • the network device receives the third message.
  • the UE may determine the second target repeated transmission times according to at least one second repeated transmission times corresponding to the first target repeated transmission times.
  • the at least one second number of repeated transmissions corresponding to the first number of repeated transmissions may be predefined by a standard, or configured by high-level signaling, or configured by the network device to the UE through third configuration information.
  • the corresponding relationship between the first number of repeated transmissions and the second number of repeated transmissions may be predefined by the standard, that is, at least one second repeated transmission corresponding to each first number of repeated transmissions may be predefined by the standard frequency.
  • the method shown in FIG. 6 further includes: the network device sends third configuration information, and the third configuration information is used to configure each first repeated transmission times The corresponding relationship between the number and the second repeated transmission times, and each value of the first repeated transmission times corresponds to at least one second repeated transmission times. That is, the network device may configure at least one second repeated transmission times corresponding to each value of the first repeated transmission times through the third configuration information. Correspondingly, the UE receives the third configuration information. It can be understood that the first repeated transmission times shown above include the first target repeated transmission times.
  • the UE may learn at least one second repeated transmission times corresponding to the first target repeated transmission times. That is, after the UE acquires at least one second number of repeated transmissions corresponding to each first number of repeated transmissions, and after the UE determines the first target number of repeated transmissions from the at least one first number of repeated transmissions indicated by the second configuration information, according to At least one second number of repeated transmissions corresponding to the first target number of repeated transmissions determines at least one second number of repeated transmissions corresponding to the first target number of repeated transmissions.
  • the method shown in FIG. 6 further includes: the network device sends indication information to the UE, and the UE receives the indication information, where the indication information is used to indicate the number of times corresponding to the first target number of repeated transmissions. A second target number of repeated transmissions in at least one second number of repeated transmissions.
  • the first one is to carry indication information through Msg2.
  • the network device may carry indication information in Msg2, and the UE determines the second target repeated transmission times according to the indication information.
  • the indication information may be used to indicate the second target repeated transmission times corresponding to the first target repeated transmission times.
  • the indication information may be used to indicate multiple second repeated transmission times corresponding to the first target repeated transmission times, so that the UE may determine a second repeated transmission number from the multiple second repeated transmission times as the second target repeated transmission times number of transfers.
  • the UE may determine the second target repeated transmission times from at least one transmission times corresponding to the first target repeated transmission times according to the modulation and coding scheme indication bit field in the DCI of the scheduling Msg2.
  • the UE may determine the second target number of repeated transmissions from at least one number of transmissions corresponding to the first number of repeated transmissions according to the modulation and coding scheme indication bit field in the DCI 1-0 of the scheduling Msg2 (that is, when the PRACH repeats A plurality of Msg3 repeated transmission times candidate values corresponding to the transmission times determine one Msg3 repeated transmission times as the second target repeated transmission times).
  • At least one first number of repeated transmissions indicated by the second configuration information is ⁇ 1, 2, 4 ⁇
  • the first target number of repeated transmissions determined by the UE is 2
  • at least A second number of repeated transmission times is ⁇ 2, 3, 4, 6 ⁇ , which means that the UE can determine a second target number of repeated transmissions from the candidate values ⁇ 2, 3, 4, 6 ⁇ .
  • the candidate value of the repeated transmission times of Msg3 (or PUSCH) corresponding to each first repeated transmission times may be predefined.
  • the mapping relationship between the number of repeated transmissions of PRACH (ie, the first number of repeated transmissions) and the number of repeated transmissions of Msg3 (ie, the second number of repeated transmissions corresponding to the first number of repeated transmissions) is shown in Table 2.
  • the UE determines the candidate value of the repeated transmission times of Msg3 according to the configured value of the first target repeated transmission times. It can be understood that the content shown in Table 2 may be pre-defined by a standard, or pre-configured by a network device, etc., which is not limited in this embodiment of the present application.
  • the UE can obtain the second target repeated transmissions according to the first determined number of repeated transmissions. number of times selected value. Therefore, compared to the UE obtaining all the second repeated transmission times, the indication information shown in the embodiment of the present application can use fewer bits to realize more value indications, such as indicating the first target repeated transmission times corresponding to the second Two repeated transmission times can make the UE determine the second target repeated transmission times, which effectively reduces signaling overhead.
  • the method for the UE to determine the second target number of repeated transmissions from at least one second number of repeated transmissions corresponding to the first number of repeated transmissions may be as follows:
  • the UE may randomly determine the second target number of repeated transmissions from at least one second number of repeated transmissions corresponding to the first number of repeated transmissions.
  • the UE may determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times based on the signal quality between the UE and the network device.
  • the UE may determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times based on the ephemeris information.
  • the UE may determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times based on the location information. For another example, the UE may determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times based on the ephemeris information and the GNSS. It can be understood that for the method for the UE to determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times, reference may be made to the description of UE determining the first target repeated transmission times, which will not be detailed here. stated.
  • the above is an example in which one first number of repeated transmissions corresponds to multiple second times of repeated transmissions.
  • the following solution may also be possible: if a first number of repeated transmissions corresponds to a second number of repeated transmissions, in this case, the UE may The second target repeated transmission times are directly determined. That is, the second target number of repeated transmissions is a second number of repeated transmissions corresponding to the first target number of repeated transmissions. That is to say, when a PRACH repeated transmission number value corresponds to a Msg3 repeated transmission times candidate value, the UE directly determines the Msg3 repeated transmission times candidate value ( That is, the second target repeated transmission times).
  • the network device sends a fourth message to the UE, and correspondingly, the UE receives the fourth message from the network device.
  • the fourth message may include Msg4 or a conflict resolution message.
  • Msg4 For the description of Msg4, please refer to FIG. 2 , which will not be described in detail here.
  • the target SSB determines the time-frequency resources used to send the first message (that is, the target RO group), and determines the number of repeated transmissions used to send the first message (that is, the first target number of repeated transmissions). Reasonably realize the repeated transmission of the uplink of the terminal equipment, and effectively realize the enhancement of the uplink coverage. Further, by assigning each first target The number of repeated transmissions corresponds to one or more times of transmission, so that one or more times of transmission corresponding to each first target number of repeated transmissions is used as a candidate value for the second target number of repeated transmissions.
  • the multi-value indication reduces signaling overhead, and reasonably realizes uplink repeated transmission of the terminal device based on the second target number of repeated transmissions.
  • the present application divides the communication device into functional modules according to the above method embodiments.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in this application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.
  • the communication device according to the embodiment of the present application will be described in detail below with reference to FIG. 7 to FIG. 9 .
  • FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 7 , the communication device includes a processing unit 701 and a transceiver unit 702 .
  • the communication device may be the terminal device or UE shown above, or a chip set in the terminal device, or the like. That is, the communication apparatus may be used to perform the steps or functions performed by the terminal device or UE in the above method embodiments.
  • a transceiver unit 702 configured to obtain first configuration information (also can be understood as being used to receive first configuration information), where the first configuration information includes RO information, and the RO information is at least used to determine an RO group;
  • the processing unit 701 is configured to send the first message through the transceiver unit 702 according to the target RO group and the first target repeated transmission times, the target RO group corresponds to the target synchronization signal block SSB, and the number of ROs included in the target RO group is N, and N is greater than Or equal to the first target repeated transmission times, N is an integer greater than 0.
  • the transceiver unit 702 is further configured to obtain second configuration information, the second configuration information is used to indicate at least one first repeated transmission times, and the first target repeated transmission times is at least one first repeated transmission One of the number of times to repeat the transfer.
  • the number of ROs included in the target RO group is the same as the value of the maximum number of repeated transmission times among at least one first number of repeated transmission times.
  • the processing unit 701 is further configured to perform RO grouping according to N and RO information to obtain at least one RO group, and resources corresponding to N ROs included in each RO group are continuous in the time domain Yes, the target RO group is one RO group in at least one RO group.
  • the transceiver unit 702 is further configured to receive the second message from the network device; and send the third message according to the second target repeated transmission times, where the second target repeated transmission times represent the repeated transmissions of the third message times, the second target number of repeated transmissions corresponds to the first target number of repeated transmissions; receiving a fourth message from the network device.
  • the second target repeated transmission times are one of at least one second repeated transmission times corresponding to the first target repeated transmission times.
  • the transceiver unit 702 is further configured to obtain third configuration information, the third configuration information It is used to configure the corresponding relationship between the value of each first repeated transmission number and the value of the second repeated transmission number in the first repeated transmission times, where each value of the first repeated transmission number corresponds to at least one first repeated transmission number 2 The value of the repeated transmission times.
  • the transceiver unit 702 is further configured to receive indication information, where the indication information is used to indicate the second target repeated transmission in at least one second repeated transmission times corresponding to the first target repeated transmission times frequency.
  • the processing unit 701 is further configured to determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times according to the indication information.
  • transceiver unit and the processing unit shown in the embodiments of the present application are only examples.
  • processing unit and the transceiver unit may also be used to execute at least one of the methods shown in FIG. 2 , FIG. 3 , and FIG. 6 .
  • the communication device may be the network device shown above or a chip set in the network device, or the like. That is, the communication device may be used to execute the steps or functions executed by the network device in the above method embodiments.
  • a transceiver unit 702 configured to send first configuration information, where the first configuration information includes RO information, and the RO information is at least used to determine a target RO group;
  • the transceiver unit 702 is further configured to receive a first message, the first message is carried on the target RO group, the number of ROs included in the target RO group is N, and N is an integer greater than 0;
  • a processing unit 701 configured to determine a target SSB according to the target RO group, where the target SSB corresponds to the target RO group;
  • the transceiver unit 702 is further configured to send the second message according to the target SSB.
  • the transceiver unit 702 is further configured to send second configuration information, where the second configuration information is used to indicate at least one first repeated transmission times, and the at least one first repeated transmission times are used to determine the first The number of repeated transmissions of the message.
  • the transceiver unit 702 is further configured to receive the third message; and send the fourth message.
  • the transceiver unit 702 is further configured to send third configuration information, and the third configuration information is used to configure the value of each first repeated transmission number in at least one first repeated transmission number and the second The corresponding relationship between the value of the number of repeated transmission times, the corresponding relationship between the value of each first number of repeated transmission times and the value of the second number of repeated transmission times in the at least one first number of repeated transmission times is used to determine the third The number of repeated transmissions of the message.
  • the transceiver unit 702 is further configured to send indication information, where the indication information is used to indicate the second target number of repeated transmissions in at least one second number of repeated transmissions corresponding to the first target number of repeated transmissions, the first A target number of repeated transmissions is the number of repeated transmissions of the first message, and a second target number of repeated transmissions is the number of repeated transmissions of the third message.
  • transceiver unit and the processing unit shown in the embodiments of the present application are only examples.
  • processing unit and the transceiver unit may also be used to execute at least one of the methods shown in FIG. 2 , FIG. 3 , and FIG. 6 .
  • the first configuration message, the second configuration information, the third configuration information, the first message, the second message, the third message, the fourth message, the first target number of repeated transmissions, and the second target repeated transmissions For descriptions such as the number of times and the target RO group, reference may also be made to the introductions in the method embodiments above, and details will not be detailed here.
  • the processing unit 701 may be one or more processors, the transceiver unit 702 may be a transceiver, or the transceiver unit 702 may also be a sending unit and a receiving unit , the sending unit may be a transmitter, and the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one device, such as a transceiver.
  • the processor and the transceiver may be coupled, and the connection manner of the processor and the transceiver is not limited in the embodiment of the present application.
  • the communication device 80 includes one or more processors 820 and a transceiver 810 .
  • the transceiver 810 is used to obtain the first configuration information (also can be understood as used to receive the first configuration information), the first Configuration information includes RO information;
  • the processor 820 is configured to send the first message according to the target RO group and the first target repeated transmission times.
  • the transceiver 810 is further configured to obtain second configuration information, where the second configuration information is used to indicate at least one first number of repeated transmissions, and the first target number of repeated transmissions is at least one first repeated transmission One of the transfer times in times.
  • the processor 820 is further configured to perform RO grouping according to the N and the RO information, to obtain at least one RO group.
  • the transceiver 810 is further configured to receive the second message from the network device; and send the third message according to the second target repeated transmission times, where the second target repeated transmission times represent repeated transmissions of the third message times, the second target number of repeated transmissions corresponds to the first target number of repeated transmissions; receiving a fourth message from the network device.
  • the transceiver 810 is further configured to obtain third configuration information, and the third configuration information is used to configure the value of each first repeated transmission number in the at least one first repeated transmission number and the second Correspondence between the values of the repeated transmission times.
  • the transceiver 810 is further configured to receive indication information, where the indication information is used to indicate a second target number of repeated transmissions in at least one second number of repeated transmissions corresponding to the first target number of repeated transmissions.
  • the processor 820 is configured to determine the second target repeated transmission times from at least one second repeated transmission times corresponding to the first target repeated transmission times according to the indication information.
  • transceiver 810 and the processor 820 reference may be made to the above method embodiment, and reference may also be made to the description about the processing unit 701 and the transceiver unit 702 in FIG. 7 above, which will not be detailed here.
  • the transceiver 810 is used to send first configuration information, where the first configuration information includes RO information;
  • the transceiver 810 is further configured to receive a first message, where the first message is carried on a target RO group, where the number of ROs included in the target RO group is N, and N is an integer greater than 0;
  • the processor 820 is configured to determine a target SSB according to the target RO group, where the target SSB corresponds to the target RO group;
  • the transceiver 810 is further configured to send the second message according to the target SSB.
  • the transceiver 810 is further configured to send second configuration information, where the second configuration information is used to indicate at least one first repeated transmission times, and the at least one first repeated transmission times are used to determine the first The number of repeated transmissions of the message.
  • the transceiver 810 is further configured to receive the third message and send the fourth message.
  • the transceiver 810 is further configured to send third configuration information, and the third configuration information is used to configure the value of each first repeated transmission number in at least one first repeated transmission number and the second The corresponding relationship between the value of the number of repeated transmission times, the corresponding relationship between the value of each first number of repeated transmission times and the value of the second number of repeated transmission times in the at least one first number of repeated transmission times is used to determine the third The number of repeated transmissions of the message.
  • the transceiver 810 is further configured to send indication information, where the indication information is used to indicate the second target number of repeated transmissions in at least one second number of repeated transmissions corresponding to the first number of repeated transmissions, the first A target number of repeated transmissions is the number of repeated transmissions of the first message, and a second target number of repeated transmissions is the number of repeated transmissions of the third message.
  • the first configuration message, the second configuration information, the third configuration information, the first message, the second message, the third message, the fourth message, the first target number of repeated transmissions, and the second target repeated transmissions For descriptions such as the number of times and the target RO group, reference may also be made to the introduction in the method embodiments above, and details will not be detailed here.
  • the transceiver may include a receiver and a transmitter, the receiver is used to perform the function (or operation) of receiving, and the transmitter is used to perform the function (or operation) of transmitting ). And the transceiver is used to communicate with other devices/devices through the transmission medium.
  • the communication device 80 may further include one or more memories 830 for storing program instructions and/or data, and the like.
  • the memory 830 is coupled to the processor 820 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 820 may cooperate with memory 830 .
  • Processor 820 may execute program instructions stored in memory 830 .
  • at least one of the above one or more memories may be included in the processor.
  • a specific connection medium among the transceiver 810, the processor 820, and the memory 830 is not limited.
  • the memory 830, the processor 820, and the transceiver 810 are connected through a bus 840.
  • the bus is represented by a thick line in FIG. 8, and the connection mode between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 8 , but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may realize Or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the memory may include but not limited to hard disk drive (hard disk drive, HDD) or solid-state drive (solid-state drive, SSD) and other non-volatile memory, random access memory (Random Access Memory, RAM), Erasable Programmable Read-Only Memory (Erasable Programmable ROM, EPROM), read-only storage (Read-Only Memory, ROM) or portable read-only memory (Compact Disc Read-Only Memory, CD-ROM) and so on.
  • the memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures, and can be read and/or written by a computer (such as the communication device shown in this application, etc.), but is not limited thereto.
  • the memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, and is used for storing program instructions and/or data.
  • the processor 820 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs.
  • the memory 830 is mainly used to store software programs and data.
  • the transceiver 810 may include a control circuit and an antenna, and the control circuit is mainly used for converting a baseband signal to a radio frequency signal and processing the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.
  • the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 820 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 820, and the processor 820 converts the baseband signal into data and processes the data deal with.
  • the radio frequency circuit and the antenna can be set independently from the processor for baseband processing.
  • the radio frequency circuit and antenna can be arranged remotely from the communication device. .
  • the communication device shown in the embodiment of the present application may have more components than those shown in FIG. 8 , which is not limited in the embodiment of the present application.
  • the method performed by the processor and the transceiver shown above is only an example, and for the specific steps performed by the processor and the transceiver, reference may be made to the method introduced above.
  • the processing unit 701 may be one or more logic circuits, and the transceiver unit 702 may be an input-output interface, or a communication interface, or an interface circuit , or interfaces and so on.
  • the transceiver unit 702 may also be a sending unit and a receiving unit, the sending unit may be an output interface, and the receiving unit may be an input interface, and the sending unit and the receiving unit are integrated into one unit, such as an input and output interface.
  • the above processing unit 701 can be realized by a logic circuit
  • the transceiver unit 702 can be realized by an interface.
  • the logic circuit may be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc.
  • the interface may be a communication interface, an input/output interface, or a pin.
  • the logic circuit and the interface may also be coupled to each other.
  • the embodiment of the present application does not limit the specific connection manner of the logic circuit and the interface.
  • the interface is used to obtain the first configuration information (also can be understood as used to receive the first configuration information), the first configuration information includes Physical random access channel PRACH transmission timing RO information;
  • a logic circuit configured to send the first message through the interface according to the target RO group and the first target repeated transmission times.
  • the interface is further configured to obtain second configuration information, the second configuration information is used to indicate at least one first repeated transmission times, and the first target repeated transmission times is at least one of the first repeated transmission times A retransmission count of .
  • the logic circuit is further configured to perform RO grouping according to N and RO information to obtain at least one RO group.
  • the interface is further configured to receive the second message from the network device; send the third message according to the second target repeated transmission times, where the second target repeated transmission times indicates the repeated transmission times of the third message, The second target number of repeated transmissions corresponds to the first target number of repeated transmissions; receiving a fourth message from the network device.
  • the interface is also used to obtain third configuration information, and the third configuration information is used to configure the value of each first repeated transmission number and the value of each first repeated transmission number in at least one first repeated transmission number Correspondence between the values of times.
  • the interface is further configured to receive indication information, where the indication information is used to indicate a second target number of repeated transmissions in at least one second number of repeated transmissions corresponding to the first target number of repeated transmissions.
  • the logic circuit is further configured to determine the second target number of repeated transmissions from at least one second number of repeated transmissions corresponding to the first target number of repeated transmissions according to the indication information.
  • the interface is used to send first configuration information, where the first configuration information includes RO information;
  • the interface is also used to receive a first message, the first message is carried on the target RO group, the number of ROs included in the target RO group is N, and N is an integer greater than 0;
  • the logic circuit is used to determine the target SSB according to the target RO group, and the target SSB corresponds to the target RO group.
  • the interface is further configured to send the second message according to the target SSB.
  • the interface is further configured to send second configuration information, where the second configuration information is used to indicate at least one first repeated transmission times, and the at least one first repeated transmission times are used to determine the The number of repeated transfers.
  • the interface is further configured to receive the third message and send the fourth message.
  • the interface is further configured to send third configuration information, and the third configuration information is used to configure the value of each first repeated transmission number and the value of each first repeated transmission number in at least one first repeated transmission number
  • the corresponding relationship between the value of the number of times, the corresponding relationship between the value of each first number of repeated transmission times and the value of the second number of repeated transmission times in the at least one first number of repeated transmission times is used to determine the value of the third message The number of repeated transfers.
  • the interface is further configured to send indication information, where the indication information is used to indicate the second target repeated transmission times in the at least one second repeated transmission times corresponding to the first target repeated transmission times, and the first target The number of repeated transmissions is the number of repeated transmissions of the first message, and the second target number of repeated transmissions is the number of repeated transmissions of the third message.
  • the communication device shown in the embodiment of the present application may implement the method provided in the embodiment of the present application in the form of hardware, or may implement the method provided in the embodiment of the present application in the form of software, which is not limited in the embodiment of the present application.
  • the first configuration message, the second configuration information, the third configuration information, the first message, the second message, the third message, the fourth message, the first target number of repeated transmissions, and the second target repeated transmissions For descriptions such as the number of times and the target RO group, reference may also be made to the introductions in the method embodiments above, and details will not be detailed here.
  • FIG. 9 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the module device 900 Relevant steps of the communication device in the aforementioned method embodiments can be performed.
  • the module device 900 includes: a communication module 901 , a power supply module 902 , a storage module 903 and a chip module 904 .
  • the power supply module 902 is used to provide electric energy for the module equipment;
  • the storage module 903 is used to store data and instructions;
  • the communication module 901 is used for internal communication of the module equipment, or for communication between the module equipment and external equipment ;
  • the chip module 904 can execute the above-mentioned communication method shown in FIG. 2 , FIG. 3 , and FIG.
  • An embodiment of the present application also provides a wireless communication system, where the wireless communication system includes a terminal device and a network device, and the terminal device and the network device may be used to execute the method in any one of the preceding embodiments.
  • the present application also provides a computer program, which is used to implement the operations and/or processing performed by the terminal device in the method provided in the present application.
  • the present application also provides a computer program, which is used to implement the operations and/or processing performed by the network device in the method provided in the present application.
  • the present application also provides a computer-readable storage medium, where computer code is stored in the computer-readable storage medium, and when the computer code is run on the computer, the computer is made to perform the operations performed by the terminal device in the method provided by the present application and/or or process.
  • the present application also provides a computer-readable storage medium, where computer code is stored in the computer-readable storage medium, and when the computer code is run on the computer, the computer is made to perform the operations performed by the network device in the method provided by the present application and/or or process.
  • the present application also provides a computer program product, the computer program product includes computer code or computer program, when the computer code or computer program is run on the computer, the operation performed by the terminal device in the method provided by the present application and/or Processing is performed.
  • the present application also provides a computer program product, the computer program product includes computer code or computer program, when the computer code or computer program is run on the computer, the operation performed by the network device in the method provided by the present application and/or Processing is performed.
  • the computer-readable storage medium may be an internal storage unit of the terminal device described in any of the foregoing embodiments, such as a hard disk or memory of the device.
  • the computer-readable storage medium may also be an external storage device of the terminal device, such as a plug-in hard disk equipped on the device, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, flash card, etc.
  • the computer-readable storage medium may also include both an internal storage unit of the terminal device and an external storage device.
  • the computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device.
  • the computer-readable storage medium can also be used to temporarily store data that has been output or will be output.
  • 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 a data center that includes one or more sets of available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, high-density digital video disc (digital video disc, DVD)), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • the above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or other arbitrary combinations.
  • the above-described embodiments may be implemented in whole or in part in the form of computer program products.
  • the computer program product comprises one or more computer instructions or computer programs.
  • the computer instruction or computer program is loaded or executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Wired or wireless transmission to another website site, computer, server or data center.
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed methods, devices and systems can be implemented in other ways.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium.
  • the above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, a server, etc.) to execute some steps of the methods described in various embodiments of the present invention.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

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Abstract

本申请实施例提供一种通信方法和装置，该方法包括：获取第一配置信息，第一配置信息包括用于确定目标RO组的RO信息，根据目标RO组和第一目标重复传输次数发送第一消息，目标RO组对应目标SSB，目标RO组中包括的RO数量为N，N大于或等于第一目标重复传输次数，N为大于0的整数。该方法可以有效地实现上行覆盖增强。

Description

一种通信方法和装置 技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法和通信装置。
背景技术
随着第五代(5th-generation，5G)通信技术的进一步演进，各种通信场景对上行覆盖增强的需求也越来越强烈，尤其是针对随机接入过程的上行覆盖增强。
一般来说，增强上行覆盖最直接的方法就是重复传输。
因此，如何实现上行消息的重复发送是当前需要解决的问题。
发明内容
本申请实施例提供一种通信方法和装置，可以有效地实现上行覆盖增强。
第一方面，本申请实施例提供一种通信方法，应用于第一通信装置，所述方法包括：
获取第一配置信息，所述第一配置信息包括物理随机接入信道(physical random access channel，PRACH)时机(PRACH occasion，RO)信息，所述RO信息至少用于确定目标RO组；根据所述目标RO组和第一目标重复传输次数发送第一消息，所述目标RO组对应目标同步信号块(synchronization signal block，SSB)，所述目标RO组中包括的RO数量为N，所述第一目标重复传输次数小于或等于所述N，所述N为大于0的整数。
可理解，本申请实施例所示的SSB也可以称为同步/物理广播信道块(synchronization/physical broadcast channel block，SS/PBCH block)。本申请实施例所示的第一目标重复传输次数可以表示为第一消息的重复传输次数。
本申请实施例中，通过目标SSB确定用于发送第一消息的时频资源(即目标RO组)，以及第一目标重复传输次数确定用于发送第一消息的重复传输次数，可以合理地实现第一通信装置上行的重复传输，有效地实现上行覆盖增强。
在一种可能的实现方式中，所述根据所述目标RO组和第一目标重复传输次数发送第一消息之前，所述方法还包括：获取第二配置信息，所述第二配置信息用于指示至少一个第一重复传输次数，所述第一目标重复传输次数为所述至少一个第一重复传输次数中的一个重复传输次数。
本申请实施例中，第二通信装置通过配置第二配置信息，可使得第一通信装置能够合理地基于该第二配置信息中所指示的至少一个第一重复传输次数确定第一目标重复传输次数。
在一种可能的实现方式中，所述目标RO组中包括的RO数量与所述至少一个第一重复传输次数中取值最大的重复传输次数的取值相同。
本申请实施例中，第一通信装置可以基于至少一个第一重复传输次数中取值最大的传输次数确定目标RO组中包括的RO数量，从而使得RO组能够适应不同的重复传输次数。
在一种可能的实现方式中，所述N的取值由第二通信装置配置。
在一种可能的实现方式中，所述目标RO组中包括的N个RO对应的资源在时域上是 连续的，所述目标RO组为至少一个RO组中的一个RO组，所述至少一个RO组根据所述RO信息和所述N得到。
在一种可能的实现方式中，所述根据目标RO组和第一目标重复传输次数发送第一消息之前，所述方法还包括：根据所述N和所述RO信息进行RO分组，获得至少一个RO组，每个RO组中包括的N个RO对应的资源在时域上是连续的，所述目标RO组为所述至少一个RO组中的一个RO组。
在一种可能的实现方式中，所述至少一个RO组为SSB和RO之间的关联周期内的RO组。
在一种可能的实现方式中，所述目标SSB为第二通信装置发送的SSB候选集中的一个SSB，且所述第二通信装置发送的SSB候选集中的每个SSB与RO组具有对应关系。
在一种可能的实现方式中，所述至少一个RO组中每个RO组先按照频域资源的索引升序排序；然后按照时域资源的索引升序排序。
在一种可能的实现方式中，在所述SSB候选集中的SSB和所述至少一个RO组映射时，按照所述SSB候选集中的SSB的索引的升序映射。
在一种可能的实现方式中，所述第二通信装置发送的SSB候选集中的SSB按照SSB的索引从小到大的顺序与排序后的所述至少一个RO组从前至后的顺序依次对应。
在一种可能的实现方式中，所述目标RO组对应至少一个SSB，所述至少一个SSB包括所述目标SSB，所述至少一个SSB为第二通信装置发送的SSB候选集中的SSB。
在一种可能的实现方式中，在所述至少一个SSB和所述目标RO组对应的前导码索引映射时，按照所述目标RO组对应的前导码索引的升序映射。
在一种可能的实现方式中，所述至少一个SSB索引的升序依次与所述目标RO组对应的前导码索引升序映射的。
在一种可能的实现方式中，所述至少一个SSB中每个SSB与至少一个前导码对应，其中，索引较大的SSB对应的前导码的索引均大于索引较小的SSB对应的前导码的索引，所述至少一个前导码为所述目标RO对应的前导码。
在一种可能的实现方式中，所述目标RO组是根据所述目标SSB确定的，所述目标SSB是所述第一通信装置得到的第二通信装置发送的SSB候选集的测量结果中信号质量大于预设阈值的SSB。
在一种可能的实现方式中，所述第一目标重复传输次数基于以下信息中的至少一项得到：
所述第一通信装置与第二通信装置之间的信号质量、星历信息、位置信息。
本申请实施例中，星历信息可以包括第二通信装置的星历信息，位置信息可以包括第一通信装置与第二通信装置之间的位置信息。例如，该位置信息包括全球导航卫星系统(global navigation satellite system，GNSS)。
也就是说，第一目标重复传输次数可以满足如下至少一项：所述第一目标重复传输次数是根据第一通信装置与第二通信装置之间的信号质量确定的；所述第一目标重复传输次数是根据星历信息得到的；所述第一目标重复传输次数是根据全球导航卫星系统GNSS得到的；所述第一目标重复传输次数由第二通信装置配置。
在一种可能的实现方式中，所述方法还包括：接收来自第二通信装置的第二消息；根据第二目标重复传输次数发送第三消息，所述第二目标重复传输次数表示所述第三消息的重复传输次数，所述第二目标重复传输次数与所述第一目标重复传输次数对应；接收来自所述第二通信装置的第四消息。
在一种可能的实现方式中，所述第二目标重复传输次数是所述第一目标重复传输次数对应的至少一个第二重复传输次数中的一个重复传输次数。
在一种可能的实现方式中，所述根据第二目标重复传输次数发送第三消息之前，所述方法还包括：获取第三配置信息，所述第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，其中，每个第一重复传输次数的取值对应至少一个第二重复传输次数的取值。
在一种可能的实现方式中，所述根据第二目标重复传输次数发送第三消息之前，所述方法还包括：接收指示信息，所述指示信息用于指示所述第一目标重复传输次数对应的至少一个第二重复传输次数中的所述第二目标重复传输次数。
在一种可能的实现方式中，所述指示信息由调度所述第二消息的下行控制信息(downlink control information，DCI)中的调制与编码方案(modulation and coding scheme，MCS)指示比特域承载。
第二方面，本申请实施例提供一种通信方法，应用于第二通信装置，所述方法包括：
发送第一配置信息，所述第一配置信息包括物理随机接入信道时机RO信息，所述RO信息至少用于确定目标RO组；接收第一消息，所述第一消息承载在所述目标RO组上，所述目标RO组中包括的RO数量为N，所述N为大于0的整数；根据所述目标RO组确定目标SSB，所述目标SSB对应目标RO组；根据所述目标SSB发送第二消息。
在一种可能的实现方式中，所述方法还包括：发送第二配置信息，所述第二配置信息用于指示至少一个第一重复传输次数，所述至少一个第一重复传输次数用于确定所述第一消息的重复传输次数。
在一种可能的实现方式中，所述目标RO组中包括的RO数量与所述至少一个第一重复传输次数中取值最大的重复传输次数的取值相同。
在一种可能的实现方式中，所述N的取值由所述第二通信装置配置。
在一种可能的实现方式中，所述目标RO组中包括的N个RO对应的资源在时域上是连续的，所述目标RO组为至少一个RO组中的一个RO组，所述至少一个RO组根据所述RO信息和所述N得到。
在一种可能的实现方式中，所述至少一个RO组为SSB与RO之间的关联周期内的RO组。
在一种可能的实现方式中，所述目标SSB为第二通信装置发送的SSB候选集中的一个SSB，所述第二通信装置发送的SSB候选集中的每个SSB与RO组具有对应关系。
在一种可能的实现方式中，所述至少一个RO组中每个RO组先按照频域资源的索引升序排序；然后按照时域资源的索引升序排序。
在一种可能的实现方式中，在所述SSB候选集中的SSB和所述至少一个RO组映射时，按照所述SSB候选集中的SSB的索引的升序映射。
在一种可能的实现方式中，所述目标RO组对应至少一个SSB，所述至少一个SSB包括所述目标SSB，所述至少一个SSB为所述第二通信装置发送的SSB候选集中的SSB。
在一种可能的实现方式中，在所述至少一个SSB和所述目标RO组对应的前导码索引映射时，按照所述目标RO组对应的前导码索引的升序映射。
在一种可能的实现方式中，所述方法还包括：发送第三配置信息，所述第三配置信息用于配置所述至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，所述至少一个第一重复传输次数中每个所述第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系用于确定第三消息的重复传输次数。
在一种可能的实现方式中，所述方法还包括：发送指示信息，所述指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数，所述第一目标重复传输次数为所述第一消息的重复传输次数，所述第二目标重复传输次数为所述第三消息的重复传输次数。
在一种可能的实现方式中，所述指示信息由调度所述第二消息的下行控制信息DCI中的调制与编码方案MCS指示比特域承载。
第三方面，本申请实施例提供一种通信装置，用于执行第一方面或第一方面的任意可能的实现方式中的方法。该通信装置包括具有执行第一方面或第一方面的任意可能的实现方式中的方法的单元。
第四方面，本申请实施例提供一种通信装置，用于执行第二方面或第二方面的任意可能的实现方式中的方法。该通信装置包括具有执行第二方面或第二方面的任意可能的实现方式中的方法的单元。
在第三方面或第四方面中，上述通信装置可以包括收发单元和处理单元。
第五方面，本申请实施例提供一种通信装置，该通信装置包括处理器，用于执行上述第一方面或第一方面的任意可能的实现方式所示的方法。或者，该处理器用于执行存储器中存储的程序，当该程序被执行时，上述第一方面或第一方面的任意可能的实现方式所示的方法被执行。
在一种可能的实现方式中，存储器位于上述通信装置之外。
在一种可能的实现方式中，存储器位于上述通信装置之内。
本申请实施例中，处理器和存储器还可以集成于一个器件中，即处理器和存储器还可以被集成在一起。
在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于接收信号或发送信号。
第六方面，本申请实施例提供一种通信装置，该通信装置包括处理器，用于执行上述第二方面或第二方面的任意可能的实现方式所示的方法。或者，处理器用于执行存储器中存储的程序，当该程序被执行时，上述第二方面或第二方面的任意可能的实现方式所示的方法被执行。
在一种可能的实现方式中，存储器位于上述通信装置之外。
在一种可能的实现方式中，存储器位于上述通信装置之内。
在本申请实施例中，处理器和存储器还可以集成于一个器件中，即处理器和存储器还可以被集成在一起。
在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于接收信号或发送信号。
第七方面，本申请实施例提供一种通信装置，该通信装置包括逻辑电路和接口，所述逻辑电路和所述接口耦合；所述接口用于输入信号和/或输出信号，所述逻辑电路用于执行代码指令，以使得第一方面或第一方面的任一种可能的实现方式被执行。
可理解，关于第七方面的具体说明可以参考第一方面，这里不再一一详述。
第八方面，本申请实施例提供一种通信装置，该通信装置包括逻辑电路和接口，所述逻辑电路和所述接口耦合；所述接口用于输入信号和/或输出信号，所述逻辑电路用于执行代码指令，以使得第二方面或第二方面的任一种可能的实现方式被执行。
可理解，关于第八方面的具体说明可以参考第二方面，这里不再一一详述。
第九方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第一方面或第一方面的任意可能的实现方式所示的方法被执行。
第十方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第二方面或第二方面的任意可能的实现方式所示的方法被执行。
第十一方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第一方面或第一方面的任意可能的实现方式所示的方法被执行。
第十二方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第二方面或第二方面的任意可能的实现方式所示的方法被执行。
第十三方面，本申请实施例提供一种计算机程序，该计算机程序在计算机上运行时，上述第一方面或第一方面的任意可能的实现方式所示的方法被执行。
第十四方面，本申请实施例提供一种计算机程序，该计算机程序在计算机上运行时，上述第二方面或第二方面的任意可能的实现方式所示的方法被执行。
第十五方面，本申请实施例提供一种模组设备，所述模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：所述电源模组用于为所述模组设备提供电能；所述存储模组用于存储数据和指令；所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；所述芯片模组用于执行如第一方面或第一方面的任一种可能的实现方式所述的方法。
第十六方面，本申请实施例提供一种模组设备，所述模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：所述电源模组用于为所述模组设备提供电能；所述存储模组用于存储数据和指令；所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；所述芯片模组用于执行如第二方面或第二方面的任一种可能的实现方式所述的方法。
第十七方面，本申请实施例提供一种无线通信系统，该无线通信系统包括终端设备和网络设备，所述终端设备用于执行上述第一方面或第一方面的任意可能的实现方式所示的方法，所述网络设备用于执行上述第二方面或第二方面的任意可能的实现方式所示的方法。
上述第二方面至第十七方面达到的技术效果可以参考第一方面的技术效果或下文所示的方法实施例中的有益效果，此处不再重复赘述。
附图说明
图1a是本申请实施例提供的一种通信系统的示意图；
图1b是本申请实施例提供的另一种通信系统的示意图；
图2是本申请实施例提供的一种随机接入方法的流程示意图；
图3是本申请实施例提供的一种通信方法的流程示意图；
图4a和图4b是本申请实施例提供的一种RO配置的示意图；
图5a和图5b是本申请实施例提供的一种RO分组的示意图；
图6是本申请实施例提供的另一种通信方法的流程示意图；
图7至图9是本申请实施例提供的一种通信装置的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地描述。
本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等仅用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备等，没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元等，或可选地还包括对于这些过程、方法、产品或设备等固有的其它步骤或单元。
在本文中提及的“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员可以显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上，“至少两个(项)”是指两个或三个及三个以上，“和/或”，用于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：只存在A，只存在B以及同时存在A和B三种情况，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，是指这些项中的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”。
本申请提供的通信方法可以应用于各类通信系统，例如，可以是物联网(internet of things，IoT)系统、窄带物联网(narrow band internet of things，NB-IoT)系统、长期演进(long term evolution，LTE)系统，也可以是5G系统，以及第六代(6th-generation，6G) 系统等。又例如，本申请实施例提供的方法还可以应用于非陆地网络(non-terrestrial networks，NTN)通信系统。
图1a是本申请实施例提供的一种通信系统的架构示意图。如图1a所示，该通信系统包括：网络设备和终端设备。可理解，图1a仅示例性地示出了三个终端设备，但是，不应将图1a所示的终端设备的数量理解为对本申请实施例的限定。
示例性的，网络设备可以是下一代节点B(next generation node B，gNB)、下一代演进型基站(next generation evolved nodeB，ng-eNB)、或者未来6G通信中的网络设备(例如，基站)等。网络设备可以是任意一种具有无线收发功能的设备，包括但不限于以上所示的基站(包括部署于卫星上的基站)。可选的，该网络设备还可以为无线局域网(wireless fidelity，WiFi)系统中的接入节点、无线中继节点、无线回传节点等。可选的，该网络设备可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。可选的，该网络设备可以是可穿戴设备或车载设备等。可选的，该网络设备还可以是小站，传输接收节点(transmission reception point，TRP)(或也可以称为传输点)等。可理解，该网络设备还可以是未来演进的公共陆地移动网络(public land mobile network，PLMN)中的基站等等。
在一些部署中，基站(如gNB)可以由集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)构成。即对接入网中的基站的功能进行拆分，将基站的部分功能部署在一个CU，将剩余功能部署在DU。且多个DU共用一个CU，可以节省成本，以及易于网络扩展。在基站的另一些部署中，CU还可以划分为CU-控制面(control plane，CP)和CU-用户面(user plan，UP)等。在基站的又一些部署中，基站还可以是开放的无线接入网(open radio access network，ORAN)架构等等，本申请对于基站的具体类型不作限定。
可选的，本申请实施例所示的网络设备还可以是如图1b所示的卫星或地面站。例如，卫星工作在透传模式时，卫星具有中继转发的功能。地面站具有基站的功能或部分基站功能，此时可以将地面站看做是基站。或者，基站可以与地面站分开部署，那么馈电链路的时延就包括卫星到地面站以及地面站到基站的时延两部分。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，此时可以将卫星看做是基站。
示例性的，该终端设备也可称为用户设备(user equipment，UE)、终端等。终端设备是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上，如轮船上等。终端设备可以是手机(mobile phone)(如图1a所示的终端设备1和终端设备3)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。可理解，该终端设备还可以是6G网络中的终端设备或者未来演进的PLMN中的终端设备等。可理解，本申请示出的终端设备可以是车联 网中的车辆(如图1a中的终端设备2)。为简洁起见，下文将终端设备称为UE来说明本申请实施例提供的方法。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
图2是本申请实施例提供的一种随机接入方法的流程示意图。如图2所示，UE可以通过读取主信息块(master indication block，MIB)和/或系统信息块(system information block，SIB)(如SIB1)来完成下行同步。例如，UE通过读取SIB1可以确定其用于向网络设备发送前导码的资源以指示其访问网络设备的意图。由此，UE可以通过其确定的资源向网络设备发送消息1(message1，Msg1)，该Msg1也可以称为随机接入前导。如果网络设备正确地接收到了Msg1，则可以向UE发送用随机接入-无线网络临时标识(random access-radio network temporary identity，RA-RNTI)加扰的消息2(message2，Msg2)，该Msg2也可以称为随机接入响应(random access response，RAR)消息。同时，在发送Msg1之后，UE可以使用RA-RNTI监测来自网络设备的Msg2以对该Msg2进行解扰。Msg2中可以包括定时提前(timing advance，TA)、临时小区-无线网络临时标识(temporary cell-RNTI，TC-RNTI)、功率调整以及UE发送消息3(message3，Mgs3)的资源指示。
然后，UE接收到Msg2后，在Msg2指示的上行资源上发送Msg3，Msg3承载在物理上行共享信道(physical uplink shared channel，PUSCH)上。其中，Msg3可以携带唯一的用户标识。
最后，网络设备接收到UE的Msg3之后，向接入成功的UE返回冲突解决消息，也称为消息4(messag4，Msg4)。网络设备在冲突解决消息中将携带Msg3中的唯一用户标识以指示接入成功的UE，而其他没有接入成功的UE将重新发起随机接入。
可理解，图2所示的随机接入方法仅为示例，不应将其理解为对本申请实施例的限定。同时，对于NTN的初始随机接入方法来说，NTN中存在较高的往返时间(round-trip-delay，RTT)(例如，同步卫星高达600ms)和传播延迟差异(例如，同步卫星高达16ms)。对于NTN中的随机接入方法也可以参考图2，这里不再一一详述。
本申请实施例提供一种通信方法和装置，能够通过重复传输的方法有效地实现上行覆盖增强。
在介绍本申请实施例提供的方法之前，以下先详细说明本申请实施例涉及的术语。
1、第一目标重复传输次数
第一目标重复传输次数表示第一消息的重复传输次数，第一目标重复传输次数表示第一消息的重复传输次数可以理解为：第一目标重复传输次数表示第一消息的总传输次数。可选的，第一目标重复传输次数可以由标准预先定义。例如，标准可以预先定义至少一个第一重复传输次数，然后由UE自主确定其传输第一消息的重复传输次数。可选的，该第一目标重复传输次数可以是网络设备下发的至少一个第一重复传输次数(如下文所示的第 二配置信息指示的至少一个第一重复传输次数)中的一个，然后由UE自主确定其传输第一消息的次数。
示例性的，第一目标重复传输次数基于以下信息中的至少一项得到：UE与网络设备之间的信道质量、星历信息、位置信息。其中，星历信息可以为网络设备所获取的星历信息(如图1b所示的卫星通信系统)，位置信息可以为UE与网络设备之间的位置信息，如可以通过GNSS获得该位置信息。以下对确定第一目标重复传输次数的几种方式做示例性说明。
A、第一目标重复传输次数是根据UE与网络设备之间的信号质量确定的。
例如，UE与网络设备之间的信号质量较好(如UE与网络设备之间的参考信号接收功率(reference signal receiving power，RSRP)大于或等于RSRP阈值)，则第一目标重复传输次数就可以为至少一个第一重复传输次数中取值较小的一个传输次数；UE与网络设备之间的信号质量较差(如UE与网络设备之间的RSRP小于RSRP阈值)，则第一目标重复传输次数就可以为至少一个第一重复传输次数中取值较大的一个传输次数。
B、第一目标重复传输次数是根据星历信息得到的。
例如，UE根据星历信息确定UE与网络设备之间的距离较远(如UE与网络设备之间的距离大于或等于距离阈值)，则第一目标重复传输次数就可以为至少一个第一重复传输次数中取值较大的一个传输次数。又例如，UE根据星历信息确定UE与网络设备之间的距离较近(如UE与网络设备之间的距离小于距离阈值)，则第一目标重复传输次数就可以为至少一个第一重复传输次数中取值较小的一个传输次数。
C、第一目标重复传输次数是根据位置信息得到的。
例如，UE根据GNSS确定UE与网络设备之间的距离较远(如UE与网络设备之间的距离大于或等于距离阈值)，则第一目标重复传输次数就可以为至少一个第一重复传输次数中取值较大的一个传输次数。又例如，UE根据GNSS确定UE与网络设备之间的距离较近(如UE与网络设备之间的距离小于距离阈值)，则第一目标重复传输次数就可以为至少一个第一重复传输次数中取值较小的一个传输次数。
可理解，以上所示的三种情况可以单独使用，或者，以上所示的三种情况也可以结合使用。例如，当UE与网络设备之间的RSRP大于RSRP阈值，以及UE与网络设备之间的距离小于距离阈值，则第一目标重复传输次数可以是至少一个第一重复传输次数中取值最小的一个传输次数。又例如，当UE与网络设备之间的RSRP大于RSRP阈值，或者，UE与网络设备之间的距离小于距离阈值，则第一目标重复传输次数可以是至少一个第一重复传输次数中取值较小的一个传输次数。又例如，当UE与网络设备之间的RSRP不大于RSRP阈值，以及UE与网络设备之间的距离不小于距离阈值，则第一目标重复传输次数可以是至少一个第一重复传输次数中取值最大的一个传输次数。
D、第一目标重复传输次数是UE从至少一个第一重复传输次数中随机确定的一个传输次数。
也就是说，UE可以基于以下至少一项从至少一个第一重复传输次数中确定出第一目标重复传输次数：根据UE与网络设备之间的信号质量确定第一目标重复传输次数；根据星历信息确定第一目标重复传输次数；根据GNSS确定第一目标重复传输次数；从至少一 个第一重复传输次数中随机确定第一目标重复传输次数。
示例性的，当第一目标重复传输次数是网络设备下发的至少一个第一重复传输次数中的一个的情况下，网络设备可以基于如下至少一项确定至少一个第一重复传输次数：
a、根据小区覆盖区域相对卫星的距离为UE配置小区级别的至少一个第一重复传输次数。
b、根据小区每个波束的覆盖区域相对卫星的距离为UE配置波束(beam)级别的至少一个第一重复传输次数。
c、根据小区中每个波束覆盖区域相对卫星的距离为UE配置小区级别的至少一个第一重复传输次数。
例如网络设备可以根据小区覆盖区域中距离卫星最近的位置与卫星之间的距离大小以及小区的覆盖区域大小确定小区级别的至少一个第一重复传输次数，其中，网络设备可以根据卫星星历信息以及小区覆盖区域中距离卫星最近的位置的位置信息，确定该最近的位置与卫星之间的距离大小。一般来讲，小区覆盖区域中距离卫星最近的位置与卫星之间的距离以及小区的覆盖区域越大，网络设备所确定小区级别的至少一个第一重复传输次数的取值就越大。另一种情况，网络设备可以根据小区中每个波束覆盖区域中距离卫星最近的位置与卫星之间的距离大小，以及波束的覆盖区域大小确定波束级别的至少一个第一重复传输次数，即确定每个波束对应的至少一个第一重复传输次数，其中，网络设备可以根据卫星星历信息以及每个波束覆盖区域中距离卫星最近的位置的位置信息，确定该最近的位置与卫星之间的距离大小。一般来讲，一个波束覆盖区域中距离卫星最近的位置与卫星之间的距离以及波束的覆盖区域越大，网络设备所确定的波束级别的至少一个第一重复传输次数的取值就越大。
可理解，以上所示的网络设备配置至少一个第一重复传输次数的方法仅为示例，不应将其理解为对本申请实施例的限定。
2、目标SSB
目标RO组对应目标SSB，如目标RO组是基于目标SSB确定的，该目标SSB可以理解为是网络设备实际发送的SSB候选集中的一个SSB。例如，该目标SSB可以是网络设备实际发送的SSB候选集中接收信号质量较好的SSB，即UE测量网络设备实际发送的SSB候选集中每个SSB的接收信号质量，然后选择接收信号质量较好的SSB作为目标SSB。可选的，该目标SSB可以是网络设备实际发送的SSB候选集中接收信号质量最好的SSB。可选的，该目标SSB可以是网络设备实际发送的SSB候选集中接收信号质量位于前三位的SSB中的任一个。可选的，该目标SSB可以是网络设备实际发送的SSB候选集中接收信号质量大于预设阈值的SSB中的任一个。该预设阈值用于衡量UE与网络设备之间的信号质量。本申请实施例对于该预设阈值的具体取值不作限定。本申请实施例对于目标SSB的具体确定方法不作限定。
3、RO
RO为用于承载随机接入前导码(以下简称为前导码)的时频资源或者说为用于承载Msg1的时频资源。RO还可以称为物理随机接入信道(physical random access channel，PRACH)时机。一个PRACH周期(即用于发送前导码的资源的周期)内可以包括多个 RO，这多个RO在时域上是周期性分布的，该周期可以称为RO的周期(示例性的可参见图4a)，每个周期内可以包括一个或多个RO。不同的RO可以通过频域资源进行区分，即对应的时域资源相同但频域资源不同的资源可以为不同的RO。不同的RO也可以通过时域资源进行区分，即对应的频域资源相同但时域资源不同的资源也可以为不同的RO。
4、目标RO组
目标RO组中所包括的RO数量为N，且N为大于0的整数，该N的取值大于或等于第一目标重复传输次数。示例性的，目标RO组中包括的RO数量可以与至少一个第一重复传输次数中的任一个重复传输次数的取值相同。例如，目标RO组中包括的RO数量可以与至少一个第一重复传输次数中取值最大的重复传输次数的取值相同。再例如，目标RO组中包括的RO数量可以与至少一个第一重复传输次数中取值第二大的重复传输次数的取值相同，还可以与其他重复传输次数的取值相同，本申请不作限制。
可理解，关于第一目标重复传输次数、目标SSB、目标RO组的说明，下文同样适应。为避免赘述，下文不再一一详述。
图3是本申请实施例提供的一种通信方法的流程示意图，该方法可以应用于第一通信装置和第二通信装置。例如，第一通信装置可以包括终端设备或设置于终端设备中的芯片，第二通信装置可以包括网络设备或设置于网络设备中的芯片。该方法可以应用于如图1a所示的通信系统，或者，该方法可以应用于如图1b所示的通信系统，这里不再一一详述。为便于描述，下文将以第一通信装置包括UE，第二通信装置包括网络设备为例说明本申请实施例提供的方法。如图3所示，该方法包括：
301、网络设备发送第一配置信息，第一配置信息包括RO信息。对应的，UE接收该第一配置信息。
网络设备可以以广播的方式发送第一配置信息。示例性的，该第一配置信息可以包含于SIB中。例如，该第一配置信息包含于SIB1中。本申请实施例所示的RO信息可以理解为是与RO资源相关的配置信息，UE根据RO信息可以确定PRACH周期中的RO。RO信息包含RO时域资源配置信息，RO频域资源配置信息以及SSB与RO之间的关联关系。RO时域资源配置信息(即用于传输/承载premble/Msg1的PRACH时域资源，或RO的时域位置)包含prach-ConfigurationIndex指示信息，如表1a所示。
表1a定义了FR1(sub-6GHz，低于6GHz)和配对频谱/补充上行链路的随机接入配置。其中，nf表示系统帧号，x表示PRACH配置周期，表示一个PRACH时隙内的RO个数，表示PRACH长度。
表1a


例如，当RO时域资源配置信息指示的PRACH配置索引为109时，存在如下条件：
随机接入前导码格式采用A1/B1；
每两个系统帧(即0,2,4…)就有时域RO(即nf mod 2＝0)；
在系统帧中的第9个子帧下的时域RO的起始位置从第0个OFDM符号开始；
第9个子帧中有2个PRACH时隙，且每个PRACH时隙中有7个时域RO；
RACH长度为7即占7个OFDM符号。
UE基于RO时域配置信息可以确定RO的时域位置。
RO频域资源配置信息(即用于传输/承载PRACH premble的PRACH频域资源，或RO的频域位置)包含RO的频域大小(即一个RO所占的PRB数)，RO的频域起始位置(msg1-FrequencyStart)和频域复用的RO个数(msg1-FDM)。其中，参数msg1-FrequencyStart可以用于配置RO的起始频域位置到初始BWP(intial BWP)或当前活跃BWP(active BWP)的起始频域位置的偏移量(offset)；参数msg1-FDM可以用于配置频域复用的RO数。
UE基于RO频域配置信息可以确定RO的频域位置。
SSB与RO之间的关联关系用于指示每个RO所关联的SSB个数X，X的取值可以是{1/8,1/4,1/2,1,2,4,8,16}。
例如，当SSB数量为16，每个RO关联的SSB数量为2，频域上复用的RO数量为2时，则PRACH周期(PRACH period)可以如图4a所示。可理解，图4a示例性示出了一个PRACH周期。又例如，当SSB数量为4，每个RO关联的SSB数量为1/2，频域上复用的RO数量为2时，则PRACH周期可以如图4b所示。可理解，图4b示例性示出了两个PRACH周期。
可理解，以上所示的RO信息的内容仅为示例，不应将其理解为对本申请实施例的限定。
在一种可能的实现方式中，图3所示的方法包括步骤302。
302、网络设备发送第二配置信息。对应的，UE获取第二配置信息，该第二配置信息用于指示至少一个第一重复传输次数，至少一个第一重复传输次数包括第一目标重复传输次数。
第二配置信息所指示的至少一个第一重复传输次数还可以理解为：网络设备为UE配置的传输次数候选取值集合。例如，该至少一个第一重复传输次数为{n1、n2、……、nm}，n1至nm均为正整数。如N属于n1至nm中的一个值。对于n1至nm的具体取值，本申请实施例不作限定。对于该至少一个第一重复传输次数的表述方式，本申请实施例也不作限定。例如，该至少一个第一重复传输次数为1至N。又例如，该至少一个第一重复传输次数为{1、2、4}。又例如，该至少一个第一重复传输次数为{1、2、3、4}。又例如，该至少一个 第一重复传输次数为{1、2、4、6}。又例如，该至少一个第一重复传输次数为{2、4、6、8}。又例如，该至少一个第一重复传输次数为{2、3、4、5、6、7、8}等，对于该至少一个第一重复传输次数的具体取值不再一一列举。
示例性的，网络设备可以通过SIB发送第二配置信息。或者，网络设备通过高层信令发送第二配置信息等，本申请实施例对于网络设备发送第二配置信息的具体形式不作限定。
在一种可能的实现方式中，目标RO组中包括的N个RO对应的资源在时域上是连续的，该目标RO组为至少一个RO组中的一个RO组，该至少一个RO组根据RO信息和N得到。目标RO组用于发送第一消息。至少一个RO组和目标RO组的确定方法可参见下文。示例性的，图3所示的方法还包括步骤303。
303、UE根据N和RO信息进行RO分组，获得至少一个RO组，至少一个RO组包括目标RO组。
每个RO组中包括的N个RO对应的资源在时域上是连续的。在步骤303之前，UE可以确定N。示例性的，UE可以将第二配置信息中所指示的至少一个第一重复传输次数中取值最大的第一重复传输次数确定为目标RO组中包括的RO数量。如可以由协议规定或者网络设备与UE双方约定以网络设备配置的至少一个第一重复传输次数中取值最大的第一重复传输次数作为N值。在另一种可能的实现方式中，网络可以通过高层信令配置N的取值。示例性的，高层信令例如可以为无线资源控制(radio resource control，RRC)信令。
在确定N之后，UE可以基于N值以及RO信息对RO进行分组，从而获得至少一个RO组。如UE可以以时域上连续N个RO为一个RO组，从而获得至少一个RO组。在目标RO组中包括的RO数量与至少一个第一重复传输次数中取值最大的第一重复传输次数的取值相同的情况下，这种RO分组方式可以让UE在RO组上使用网络配置的至少一个第一重复传输次数中任意一个第一重复传输次数取值发送Msg1。在N的取值为网络通过高层信令配置的情况下，这种RO分组方式下，UE在RO组上进行Msg1发送时，所采用的第一重复传输次数取值不能大于网络指示的N值。
本申请实施例所示的RO组可以满足如下至少一项：
1、网络设备实际发送的SSB候选集中的每个SSB与RO组具有对应的关系。即网络设备实际发送的SSB候选集中的每个SSB都与上述至少一个RO组中的一个或者多个RO组关联。例如，一个RO组可以对应一个SSB。又例如，一个RO组可以对应多个SSB。例如，本申请实施例所示的目标RO组可以对应至少一个SSB(假设为M个SSB，M为大于0的整数)，M个SSB包括目标SSB，M个SSB为网络设备实际发送的SSB候选集中的SSB。可理解，一个RO组对应的SSB数可以由协议中的SSB-perRACH-occasion这个参数确定，或者在系统信息或者RRC信令中额外引入一个参数指示一个RO组对应的SSB数。可理解，关于目标SSB的说明可以参考上文，这里不再一一详述。示例性的，参见下文中的表1b，假设上述至少一个RO组包括RO组1、RO组2和RO组3，其中，RO组3对应一个SSB(即SSB4)，RO组1对应多个SSB(即SSB0、SSB1和SSB2)，RO组2对应多个SSB(即SSB2和SSB3)。
2、上述至少一个RO组为SSB与RO的关联周期内的RO组。例如，在一个SSB与 RO的关联周期内，网络设备实际发送的SSB候选集中的每个SSB与RO组具有对应关系。也就是说，在一个SSB与RO的关联周期内，网络设备配置的所有实际发送的SSB都会关联到一个或多个RO组。
3、至少一个RO组先按照频域资源的索引(即RO组的频域资源的索引)升序排序；然后按照时域资源的索引(即RO组的时域资源的索引)升序排序。
示例性的，假设RO组具有索引，且排序越靠前的RO组的索引越小，则排序之后的至少一个RO组的时频资源位置可参见图5a。需要说明的是，至少一个RO组也可以先按照时域资源的索引升序排序，再按照频域资源的索引升序排序，或其他排序方式进行排序，本申请不作限制，下文中均以至少一个RO组先按照频域资源的索引升序排序，再按照时域资源的索引升序排序为例进行描述。
本申请实施例中，通过将至少一个RO组按照以上所示的顺序排列，可使得该至少一个RO组中的每个RO组都能够按照以上所示的顺序与SSB进行映射。至于，该SSB的排列顺序可以参考下文。
4、在SSB候选集中的SSB和至少一个RO组映射时，按照SSB候选集中的SSB的索引从小到大的顺序映射。
根据以上所示的至少一个RO组的排序方式，以及SSB候选集中的SSB的排序方式，可使得UE能够基于上述RO组的排列方式以及SSB的排列方式，快速地获知RO组与SSB的对应关系，从而在确定出目标SSB之后，便可以获取与该目标SSB对应的目标RO组。进而，通过目标RO组发送Msg1。示例性的，RO组与SSB的映射关系可以包括：网络设备实际发送的SSB候选集中的SSB按照SSB的索引从小到大的顺序与排序后的至少一个RO组从前至后的顺序依次对应。例如，假设至少一个RO组包括3个RO组，分别为RO组1、RO组2和RO组3，网络设备实际发送的SSB有3个，分别为SSB0、SSB1和SSB2，则经过对应之后，可以RO组1对应SSB0，RO组2对应SSB1、RO组3对应SSB2。再例如，假设至少一个RO组为6个RO组，即RO组1至RO组6，网络设备实际发送的SSB有3个，分别为SSB0、SSB1和SSB2，每个RO组对应2个SSB，则经过对应之后，可以RO组1和RO组2对应SSB0，RO组3和RO组4对应SSB1、RO组5和RO组6对应SSB2。
需要说明的是，在SSB候选集中的SSB和至少一个RO组映射时，也可以按照SSB候选集中的SSB的索引从大到小的顺序映射，本申请不作限制。示例性的，每个RO组对应的SSB的个数可以由以下方式中的一个或多个确定：
方式1：每个RO组对应的SSB个数可以由协议中的SSB-perRACH-occasion确定。
方式2：网络设备通过高层参数(例如SSB-perRACH-occasion group)配置每个RO组对应的SSB个数(即引入一个高层参数用于指示每个RO组对应的SSB个数)
方式3：如过高层配置了每个RO组对应的SSB个数(例如SSB-perRACH-occasion group)则采用高层配的，如果没有配置，则根据协议中的SSB-perRACH-occasion确定。
5、目标RO组对应M个SSB，M个SSB包括目标SSB，M个SSB为第二通信装置发送的SSB候选集中的SSB。
6、在M个SSB和目标RO组对应的前导码索引映射时，按照目标RO组对应的前导 码索引的升序映射。
示例性的，如表1b所示，UE获得的排序后的至少一个RO组包括RO组1、RO组2和RO组3，UE获得的排序后的SSB包括SSB0至SSB4，则依据以上所示的映射关系，RO组1可以对应SSB0、SSB1和SSB2、RO组2可以对应SSB2和SSB3、RO组3可以对应SSB4。以RO组1为例，由于其对应了三个SSB，因此可以根据RO组对应的前导码索引从小到大的顺序依次与SSB0、SSB1和SSB2对应，如索引为0-15的前导码可以与SSB0对应，索引为16-31的前导码可以与SSB1对应，索引为32-47的前导码可以与SSB2对应。可理解，表1b所示的SSB、RO组以及前导码之间的关系示例，不应将其理解为对本申请实施例的限定。
表1b
本申请实施例所示的一个RO组与一个前导码所组成的资源可以称为一个PRACH资源组，此时，一个PRACH资源组可以表示UE发送Msg1所采用的时频资源以及前导码索引(或前导码序列)。示例性的，参见表1b，RO组1和索引为0-15的前导码可以组成16个PRACH资源组。
上述映射过程可以综合描述为：
首先：针对对应同一个RO组的不同的PRACH资源组，按照PRACH资源组对应的前导码的索引进行升序排列。
然后：在频域上按照频域资源索引升序对频域上复用的RO组进行排序。
最后：在时域上按照时域资源索引升序对时域上复用的RO组进行排序。
根据以上所示的方法对PRACH资源组(即RO组和前导码)进行排序后，然后按照SSB的索引从小到大依次与PRACH资源组进行映射。
例如，图5a和图5b是本申请实施例提供的一种RO的分组情况示意图。如图5a所示，以N的取值等于6为例，则UE对RO进行分组后，得到的至少一个RO组如图5a所示。可理解，图5a仅示例性示出了八个RO组(如图5a所示的RO组1至RO组8，即按照先频域后时域的顺序排序后的RO组)，不应将其理解为对本申请实施例的限定。将RO组与网络设备实际发送的SSB候选集中的SSB对应，则依据SSB的索引升序顺序，则图5a所示的八个RO组与SSB的映射关系可以如图5b所示，此时，由于一个SSB(例如，SSB1)对应一个RO组(例如，RO组1)，因此，SSB1与全部PRACH资源组具有映射关系，此处的全部的PRACH资源组是指RO组1和全部前导码组成的PRACH资源组。可理解，图5b未示出RO组的标识，如RO组1与SSB1对应，RO组2与SSB2对应，以此类推。 如图5b所示，一个RO组关联一个SSB，且频域上复用了4个RO资源，网络设备实际发送的SSB个数可以为8个。可理解，图5b是以一个SSB对应一个RO组为例示出的，不应将其理解为对本申请实施例的限定。可理解，图5b所示的八个SSB仅为示例，不应将其理解为对本申请实施例的限定。
再例如，假设网络设备实际发送的SSB候选集中的SSB包括SSB0至SSB5，至少一个RO组包括RO组1至RO组3(RO组1至RO组3的时频资源位置的确定可参见上文)，SSB0和SSB1与RO组1对应，SSB2和SSB3与RO组2对应，SSB4和SSB5与RO组3对应，则经过映射之后，SSB与PRACH资源组的映射关系可参见表1c。
表1c
304、UE根据目标RO组和第一目标重复传输次数发送第一消息。对应的，网络设备接收该第一消息。
其中，第一目标重复传输次数表示第一消息的重复传输次数，目标RO组对应目标SSB，目标RO组根据RO信息得到。关于第一目标重复传输次数、目标SSB和目标RO组的说明可以参考上文，这里不再一一详述。UE划分RO组的具体说明可以参考上文，这里不再一一详述。
可理解，本申请实施例所示的第一消息可以包括消息1(如Msg1)或随机接入前导码。关于Msg1的其他说明可以参考图2，这里不再一一详述。
示例性的，UE在发送Msg1时，根据SSB的测量结果(如SSB对应的RSRP大小)确定一个接收信号质量大于预设阈值(如RSRP大于预设阈值)的SSB作为目标SSB。然后根据SSB与RO组的映射关系，确定出目标SSB所对应的目标RO组以及与目标SSB对应的前导码序列索引的范围。之后，UE可以在目标SSB所对应的前导码序列索引的范围随机选择一个前导码索引对应的序列作为目标前导(Preamble)码。举例来说，如表1b所示，当UE确定SSB0作为目标SSB后，根据表1b所示的对应关系可以确定目标RO组为RO组1，再从该目标SSB对应的索引为0-15的前导码中选择一个前导码作为目标前导码(携带在第一消息中的前导码)。然后根据UE与网络设备之间的信号质量、星历信息、 GNSS定位信息等确定合适的第一目标重复传输次数(也可以称为PRACH重复传输次数)，最后基于确定的目标RO组和第一目标重复传输次数发送目标前导码(携带在第一消息中)。再例如，如表1b所示，当UE确定SSB0作为目标SSB后，RO组1和索引为0-15的前导码可以组成16个PRACH资源组，目标SSB与该16个PRACH资源组对应，UE可以确定目标SSB对应的16个PRACH资源组中的一个PRACH资源组作为目标PRACH资源组，然后根据UE与网络设备之间的信号质量、星历信息、GNSS定位信息等确定合适的第一目标重复传输次数，最后基于确定的目标PRACH资源组对应的RO组和第一目标重复传输次数发送目标PRACH资源组对应的前导码(携带在第一消息中)。可理解，关于UE确定第一目标重复传输次数的说明可以参考上文关于第一目标重复传输次数的描述，这里不再一一详述。
可理解，UE所确定的第一目标重复传输次数不会大于RO组中所包括的RO数。最后，UE根据所确定的第一目标重复传输次数在所确定的目标RO组中选择RO进行Msg1的发送。UE确定第一目标重复传输次数后，在所确定的目标RO组中如何选择RO进行Msg1的发送，有如下两种方式：
方式1：预定定义规则或由网络设备配置。例如规定UE利用目标RO组前S个RO发送Msg1，其中S为UE确定的第一目标重复传输次数。
方式2：基于UE实现来选择目标RO组中的S个RO发送Msg1，其中S为UE确定的第一目标重复传输次数。
例如，S＝4时，表示UE向网络设备发送Msg1的次数为4次。此时，UE在目标RO组中的N个RO中选择S个RO重复发送Msg1。该情况下，网络设备接收到Msg1的次数也可以是4次。由此，可实现Msg1的重复传输以增强UE发送Msg1的覆盖范围。可理解，本申请实施例所示的衡量UE与网络设备之间的信号质量可以用RSRP衡量，或者用参考信号接收质量(reference signal receiving quality，RSRQ)衡量等，本申请实施例对此不作限定。
可理解，当网络设备接收到第一消息之后，可以根据该第一消息所在的RO组(即目标RO组)确定目标SSB。若目标RO组对应多个SSB，则可以进一步结合接收到的前导码确定标SSB。从而，根据该目标SSB获知网络设备与UE之间信号质量较好的波束，进而根据该目标SSB发送第二消息(如图6所示)。例如，网络设备可以在所有的RO组上接收UE发送的第一消息，然后确定出其收到的第一消息所在RO组，从而确定目标SSB。然后根据目标SSB下发第二消息。
需要说明的是，本申请实施例所示的方法可以包括步骤301、步骤302、步骤303和步骤304。或者，本申请实施例所示的方法可以包括步骤301、步骤302和步骤304。例如，在UE已经获得了至少一个RO组的情况下，当UE再次发送第一消息时，该UE可以直接使用之前已经得到的至少一个RO组中的目标RO组中的RO发送第一消息。或者，本申请实施例所示的方法可以包括步骤301和步骤304。例如，第一目标重复传输次数和N均是由标准定义的情况下，图3所示的方法可以不包括步骤302。
本申请实施例中，通过目标SSB来确定用于发送第一消息的时频资源(即目标RO组)，以及第一目标重复传输次数确定用于发送第一消息的重复传输次数，可以合理地实现终端 设备上行的重复传输，有效地实现上行覆盖增强。
图6是本申请实施例提供的另一种通信方法的流程示意图。该方法所应用的通信系统可以参考图1a和/或图1b，这里不再一一详述。如图6所示，该方法包括：
601、网络设备发送第一配置信息，第一配置信息包括RO信息。对应的，UE接收该第一配置信息。
在一种可能的实现方式中，图6所示的方法可以包括步骤602。
602、网络设备发送第二配置信息。对应的，UE获取第二配置信息。该第二配置信息用于指示至少一个第一重复传输次数，至少一个第一重复传输次数包括第一目标重复传输次数。
在一种可能的实现方式中，图6所示的方法可以包括步骤603。
603、UE根据N和RO信息进行RO分组，获得至少一个RO组，至少一个RO组包括目标RO组。
604、UE根据目标RO组和第一目标重复传输次数发送第一消息。对应的，网络设备接收该第一消息。
可理解，关于步骤601至步骤604的说明可以参考图3，这里不再一一详述。示例性的，关于步骤601的说明可以参考图3所示的步骤301，关于步骤602的说明可以参考图3所示的步骤302，关于步骤603的说明可以参考图3所示的步骤303，关于步骤604的说明可以参考图3所示的步骤304。
605、网络设备向UE发送第二消息，对应的，UE接收来自网络设备的第二消息。
本申请实施例中，第一消息可以承载于目标RO组上，该目标RO组中包括的RO数量为N，该N为大于0的整数。当网络设备接收到第一消息时，根据该第一消息所承载的RO组确定目标SSB。从而，通过该目标SSB发送第二消息。
示例性的，第二消息包括消息2(Msg2)，即随机接入响应消息。关于Msg2的说明可以参考图2，这里不再一一详述。示例性的，UE可以接收由DCI调度的Msg2，即UE发送完Msg1之后需要监听物理下行控制信道(physical downlink control channel，PDCCH)以获取Msg2的调度信息(如DCI)，然后根据调度信息(如DCI)接收Msg2。
606、UE根据第二目标重复传输次数发送第三消息，第二目标重复传输次数表示第三消息的重复传输次数，第二目标重复传输次数与第一目标重复传输次数对应。对应的，网络设备接收第三消息。
示例性的，UE可以根据与第一目标重复传输次数对应的至少一个第二重复传输次数确定第二目标重复传输次数。与第一目标重复传输次数对应的至少一个第二重复传输次数可以由标准预先定义，或者由高层信令配置，或者，网络设备通过第三配置信息配置给UE。
在一种可能的实现方式中，可以由标准预先定义第一重复传输次数与第二重复传输次数的对应关系，即由标准预先定义与每个第一重复传输次数对应的至少一个第二重复传输次数。
在另一种可能的实现方式中，步骤606之前，图6所示的方法还包括：网络设备发送第三配置信息，第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次 数与第二重复传输次数的对应关系，每个第一重复传输次数的取值对应至少一个第二重复传输次数。即网络设备可以通过第三配置信息配置每个第一重复传输次数的取值对应的至少一个第二重复传输次数。对应的，UE接收该第三配置信息。可理解，以上所示的第一重复传输次数包括第一目标重复传输次数。
可理解，根据上述与每个第一重复次数对应的至少一个第二重复传输次数，UE便可以获知与第一目标重复传输次数对应的至少一个第二重复传输次数。即UE获取到每个第一重复传输次数对应的至少一个第二重复传输次数之后，以及UE从第二配置信息所指示的至少一个第一重复传输次数中确定第一目标重复传输次数之后，根据该第一目标重复传输次数所对应的至少一个第二重复传输次数确定与该第一目标重复传输次数对应的至少一个第二重复传输次数。
在又一种可能的实现方式中，步骤606之前，图6所示的方法还包括：网络设备向UE发送指示信息，UE接收指示信息，该指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数。
以上所示的指示信息可以通过以下方式实现：
第一种，通过Msg2携带指示信息。如网络设备可以在Msg2中携带指示信息，UE根据该指示信息确定第二目标重复传输次数。例如，指示信息可以用于指示第一目标重复传输次数对应的第二目标重复传输次数。又例如，指示信息可以用于指示第一目标重复传输次数对应的多个第二重复传输次数，从而UE可以从该多个第二重复传输次数中确定一个第二重复传输次数作为第二目标重复传输次数。
第二种，通过DCI携带，UE可以根据调度Msg2的DCI中的调制编码方案指示比特域，从与第一目标重复传输次数对应的至少一个传输次数中确定第二目标重复传输次数。示例性的，UE可以根据调度Msg2的DCI 1-0中的调制编码方案指示比特域，从与第一目标重复传输次数对应的至少一个传输次数中确定第二目标重复传输次数(即在PRACH重复传输次数对应的多个Msg3重复传输次数候选值确定一个Msg3重复传输次数作为第二目标重复传输次数)。
举例来说，第二配置信息所指示的至少一个第一重复传输次数为{1、2、4}，UE确定的第一目标重复传输次数为2，与该第一目标重复传输次数对应的至少一个第二重复传输次数为{2、3、4、6}，则表示UE可以从候选值{2、3、4、6}中确定一个第二目标重复传输次数。又如UE确定的第一目标重复传输次数为4，则与该第一目标重复传输次数对应的至少一个第二重复传输次数为{4、6、8、10}，则表示UE可以从候选值为{4、6、8、10}中确定一个第二目标重复传输次数。也就是说，可以预先定义每个第一重复传输次数对应的Msg3(或PUSCH)的重复传输次数候选值。
例如，PRACH重复传输次数(即第一重复传输次数)与Msg3重复传输次数(即与第一重复传输次数对应的第二重复传输次数)之间的映射关系，如表2所示。UE根据已配置的第一目标重复传输次数值，确定Msg3重复传输次数候选值。可理解，表2所示的内容可以由标准预先定义，或者，由网络设备预先配置等，本申请实施例对此不作限定。示例性的，从表2可以看出，本申请实施例中通过将第一重复传输次数与第二重复传输次数对应，可以使得UE根据其确定的第一目标重复传输次数获取第二目标重复传输次数的候 选值。从而，相对于UE获取所有的第二重复传输次数来说，本申请实施例所示的指示信息可以通过较少的比特实现更多值的指示，如通过指示第一目标重复传输次数对应的第二重复传输次数就可以使得UE确定第二目标重复传输次数，有效减少了信令开销。
表2
PRACH重复传输次数 Msg3(PUSCH)重复传输次数候选值
1 1，2，3，4
2 2，3，4，6
4 4，6，8，10
UE从与第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数的方法可以如下所示：
第一、UE可以随机从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。
第二、UE可以基于其与网络设备之间的信号质量从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。
第三、UE可以基于星历信息从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。
第四、UE可以基于位置信息从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。又例如，UE可以基于星历信息和GNSS从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。可理解，关于UE从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数的方法可以参考UE确定第一目标重复传输次数的描述，这里不再一一详述。
可理解，表1b所示的PRACH重复传输次数的取值仅为示例，以及与PRACH重复传输次数对应的Msg3重复传输次数仅为示例，不应将其理解为对本申请实施例的限定。
可理解，以上是以一个第一重复传输次数对应多个第二重复传输次数为例示出的。然而，本申请实施例中，还可以有如下方案：如一个第一重复传输次数对应一个第二重复传输次数，该情况下，UE可以根据第一目标重复传输次数对应的一个第二重复传输次数直接确定第二目标重复传输次数。即第二目标重复传输次数为与第一目标重复传输次数对应的一个第二重复传输次数。也就是说，当一个PRACH重复传输次数值对应一个Msg3重复传输次数候选值时，则UE直接根据已确定的PRACH重复传输次数值(即第一目标重复传输次数)确定Msg3重复传输次数候选值(即第二目标重复传输次数)。
607、网络设备向UE发送第四消息，对应的，UE接收来自网络设备的第四消息。
示例性的，第四消息可以包括Msg4或冲突解决消息。关于Msg4的说明可以参考图2，这里不再一一详述。
本申请实施例中，通过目标SSB确定用于发送第一消息的时频资源(即目标RO组)，以及确定用于发送第一消息的重复传输次数(即第一目标重复传输次数)，可以合理地实现终端设备上行的重复传输，有效地实现上行覆盖增强。进一步的，通过将每个第一目标 重复传输次数都对应一个或多个传输次数，从而将每个第一目标重复传输次数对应的一个或多个传输次数作为第二目标重复传输次数的候选值，不仅可以通过较少的比特实现更多值的指示，减少信令开销，而且基于第二目标重复传输次数合理地实现了终端设备上行的重复传输。
可理解，以上所示的各个实施例中，其中一个实施例未详细描述的实现方式，可以参考其他实施例。
以下将介绍本申请实施例提供的通信装置。
本申请根据上述方法实施例对通信装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。下面将结合图7至图9详细描述本申请实施例的通信装置。
图7是本申请实施例提供的一种通信装置的结构示意图，如图7所示，该通信装置包括处理单元701和收发单元702。
在本申请的一些实施例中，该通信装置可以是上文示出的终端设备或UE或设置于终端设备中的芯片等。即该通信装置可以用于执行上文方法实施例中由终端设备或UE执行的步骤或功能等。
收发单元702，用于获取第一配置信息(也可以理解为用于接收第一配置信息)，第一配置信息包括RO信息，该RO信息至少用于确定RO组；
处理单元701，用于根据目标RO组和第一目标重复传输次数，通过收发单元702发送第一消息，目标RO组对应目标同步信号块SSB，目标RO组中包括的RO数量为N，N大于或等于第一目标重复传输次数，N为大于0的整数。
在一种可能的实现方式中，收发单元702，还用于获取第二配置信息，第二配置信息用于指示至少一个第一重复传输次数，第一目标重复传输次数为至少一个第一重复传输次数中的一个重复传输次数。
在一种可能的实现方式中，目标RO组中包括的RO数量与至少一个第一重复传输次数中取值最大的重复传输次数的取值相同。
在一种可能的实现方式中，处理单元701，还用于根据N和RO信息进行RO分组，获得至少一个RO组，每个RO组中包括的N个RO对应的资源在时域上是连续的，目标RO组为至少一个RO组中的一个RO组。
在一种可能的实现方式中，收发单元702，还用于接收来自网络设备的第二消息；根据第二目标重复传输次数发送第三消息，第二目标重复传输次数表示第三消息的重复传输次数，第二目标重复传输次数与第一目标重复传输次数对应；接收来自网络设备的第四消息。
在一种可能的实现方式中，第二目标重复传输次数是第一目标重复传输次数对应的至少一个第二重复传输次数中的一个。
在一种可能的实现方式中，收发单元702，还用于获取第三配置信息，第三配置信息 用于配置第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，其中，每个第一重复传输次数的取值对应至少一个第二重复传输次数的取值。
在一种可能的实现方式中，收发单元702，还用于接收指示信息，该指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的所述第二目标重复传输次数。
在一种可能的实现方式中，处理单元701，还用于根据指示信息从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。
可理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，处理单元和收发单元还可以用于执行图2、图3、图6中的至少一项所示的方法。
复用图7，在本申请的另一些实施例中，该通信装置可以是上文示出的网络设备或设置于网络设备中的芯片等。即该通信装置可以用于执行上文方法实施例中由网络设备执行的步骤或功能等。
收发单元702，用于发送第一配置信息，第一配置信息包括RO信息，该RO信息至少用于确定目标RO组；
收发单元702，还用于接收第一消息，该第一消息承载在目标RO组上，该目标RO组包括的RO数量为N，N为大于0的整数；
处理单元701，用于根据目标RO组确定目标SSB，目标SSB对应目标RO组；
收发单元702，还用于根据目标SSB发送第二消息。
在一种可能的实现方式中，收发单元702，还用于发送第二配置信息，第二配置信息用于指示至少一个第一重复传输次数，该至少一个第一重复传输次数用于确定第一消息的重复传输次数。
在一种可能的实现方式中，收发单元702，还用于接收第三消息；以及发送第四消息。
在一种可能的实现方式中，收发单元702，还用于发送第三配置信息，第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，该至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系用于确定第三消息的重复传输次数。
在一种可能的实现方法中，收发单元702，还用于发送指示信息，指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数，第一目标重复传输次数为第一消息的重复传输次数，第二目标重复传输次数为第三消息的重复传输次数。
可理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，处理单元和收发单元还可以用于执行图2、图3、图6中的至少一项所示的方法。
本申请实施例中，关于第一配置消息、第二配置信息、第三配置信息、第一消息、第二消息、第三消息、第四消息、第一目标重复传输次数、第二目标重复传输次数、目标RO组等说明还可以参考上文方法实施例中的介绍，这里不再一一详述。
以上介绍了本申请实施例的通信装置，以下介绍所述通信装置可能的产品形态。应理解，但凡具备上述图7所述的通信装置的功能的任何形态的产品，都落入本申请实施例的保护范围。还应理解，以下介绍仅为举例，不限制本申请实施例的通信装置的产品形态仅限于此。
在一种可能的实现方式中，图7所示的通信装置中，处理单元701可以是一个或多个处理器，收发单元702可以是收发器，或者收发单元702还可以是发送单元和接收单元，发送单元可以是发送器，接收单元可以是接收器，该发送单元和接收单元集成于一个器件，例如收发器。本申请实施例中，处理器和收发器可以被耦合等，对于处理器和收发器的连接方式，本申请实施例不作限定。
如图8所示，该通信装置80包括一个或多个处理器820和收发器810。
示例性的，当该通信装置用于执行上述终端设备执行的步骤或方法或功能时，收发器810，用于获取第一配置信息(也可以理解为用于接收第一配置信息)，第一配置信息包括RO信息；
处理器820，用于根据目标RO组和第一目标重复传输次数发送第一消息。
在一种可能的实现方式中，收发器810，还用于获取第二配置信息，第二配置信息用于指示至少一个第一重复传输次数，第一目标重复传输次数为至少一个第一重复传输次数中的一个传输次数。
在一种可能的实现方式中，处理器820，还用于根据N和RO信息进行RO分组，获得至少一个RO组。
在一种可能的实现方式中，收发器810，还用于接收来自网络设备的第二消息；根据第二目标重复传输次数发送第三消息，第二目标重复传输次数表示第三消息的重复传输次数，第二目标重复传输次数与第一目标重复传输次数对应；接收来自网络设备的第四消息。
在一种可能的实现方式中，收发器810，还用于获取第三配置信息，第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系。
在一种可能的实现方式中，收发器810，还用于接收指示信息，该指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数。
在一种可能的实现方式中，处理器820，用于根据指示信息从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。
可理解，关于收发器810和处理器820的具体说明可以参考上文方法实施例，也可以参考上述图7中关于处理单元701和收发单元702的描述，这里不再一一详述。
示例性的，当该通信装置用于执行上述网络设备执行的步骤或方法或功能时，收发器810，用于发送第一配置信息，第一配置信息包括RO信息；
收发器810，还用于接收第一消息，该第一消息承载在目标RO组上，该目标RO组包括的RO数量为N，N为大于0的整数；
处理器820，用于根据目标RO组确定目标SSB，目标SSB对应目标RO组；
收发器810，还用于根据目标SSB发送第二消息。
在一种可能的实现方式中，收发器810，还用于发送第二配置信息，第二配置信息用于指示至少一个第一重复传输次数，该至少一个第一重复传输次数用于确定第一消息的重复传输次数。
在一种可能的实现方式中，收发器810，还用于接收第三消息，以及发送第四消息。
在一种可能的实现方式中，收发器810，还用于发送第三配置信息，第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，该至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系用于确定第三消息的重复传输次数。
在一种可能的实现方式中，收发器810，还用于发送指示信息，指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数，第一目标重复传输次数为第一消息的重复传输次数，第二目标重复传输次数为第三消息的重复传输次数。
本申请实施例中，关于第一配置消息、第二配置信息、第三配置信息、第一消息、第二消息、第三消息、第四消息、第一目标重复传输次数、第二目标重复传输次数、目标RO组等说明还可以参考上文方法实施例中的介绍，这里不再一一详述。
可理解，对于处理器和收发器的具体说明还可以参考图7所示的处理单元和收发单元的介绍，这里不再赘述。
在图8所示的通信装置的各个实现方式中，收发器可以包括接收机和发射机，该接收机用于执行接收的功能(或操作)，该发射机用于执行发射的功能(或操作)。以及收发器用于通过传输介质和其他设备/装置进行通信。
可选的，通信装置80还可以包括一个或多个存储器830，用于存储程序指令和/或数据等。存储器830和处理器820耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器820可能和存储器830协同操作。处理器820可以执行存储器830中存储的程序指令。可选的，上述一个或多个存储器中的至少一个可以包括于处理器中。
本申请实施例中不限定上述收发器810、处理器820以及存储器830之间的具体连接介质。本申请实施例在图8中以存储器830、处理器820以及收发器810之间通过总线840连接，总线在图8中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图8中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成等。
本申请实施例中，存储器可包括但不限于硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等非易失性存储器，随机存储记忆体(Random Access Memory，RAM)、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、只读存储 器(Read-Only Memory，ROM)或便携式只读存储器(Compact Disc Read-Only Memory，CD-ROM)等等。存储器是能够用于携带或存储具有指令或数据结构形式的程序代码，并能够由计算机(如本申请示出的通信装置等)读和/或写的任何存储介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
示例性的，处理器820主要用于对通信协议以及通信数据进行处理，以及对整个通信装置进行控制，执行软件程序，处理软件程序的数据。存储器830主要用于存储软件程序和数据。收发器810可以包括控制电路和天线，控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当通信装置开机后，处理器820可以读取存储器830中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器820对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到通信装置时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器820，处理器820将基带信号转换为数据并对该数据进行处理。
在另一种实现中，所述的射频电路和天线可以独立于进行基带处理的处理器而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
可理解，本申请实施例示出的通信装置还可以具有比图8更多的元器件等，本申请实施例对此不作限定。以上所示的处理器和收发器所执行的方法仅为示例，对于该处理器和收发器具体所执行的步骤可参照上文介绍的方法。
在另一种可能的实现方式中，图7所示的通信装置中，处理单元701可以是一个或多个逻辑电路，收发单元702可以是输入输出接口，又或者称为通信接口，或者接口电路，或接口等等。或者收发单元702还可以是发送单元和接收单元，发送单元可以是输出接口，接收单元可以是输入接口，该发送单元和接收单元集成于一个单元，例如输入输出接口。如上述处理单元701可以用逻辑电路实现，收发单元702可以用接口实现。其中，该逻辑电路可以为芯片、处理电路、集成电路或片上系统(system on chip，SoC)芯片等，接口可以为通信接口、输入输出接口、管脚等。
本申请实施例中，逻辑电路和接口还可以相互耦合。对于逻辑电路和接口的具体连接方式，本申请实施例不作限定。
示例性的，当通信装置用于执行上述终端设备执行的方法或功能或步骤时，接口，用于获取第一配置信息(也可以理解为用于接收第一配置信息)，第一配置信息包括物理随机接入信道PRACH传输时机RO信息；
逻辑电路，用于根据目标RO组和第一目标重复传输次数，通过接口发送第一消息。
在一种可能的实现方式中，接口，还用于获取第二配置信息，第二配置信息用于指示至少一个第一重复传输次数，第一目标重复传输次数为至少一个第一重复传输次数中的一个重复传输次数。
在一种可能的实现方式中，逻辑电路，还用于根据N和RO信息进行RO分组，获得至少一个RO组。
在一种可能的实现方式中，接口，还用于接收来自网络设备的第二消息；根据第二目标重复传输次数发送第三消息，第二目标重复传输次数表示第三消息的重复传输次数，第二目标重复传输次数与第一目标重复传输次数对应；接收来自网络设备的第四消息。
在一种可能的实现方式中，接口，还用于获取第三配置信息，第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系。
在一种可能的实现方式中，接口，还用于接收指示信息，该指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数。
在一种可能的实现方式中，逻辑电路，还用于根据指示信息从第一目标重复传输次数对应的至少一个第二重复传输次数中确定第二目标重复传输次数。
示例性的，当通信装置用于执行上述网络设备执行的方法或功能或步骤时，接口，用于发送第一配置信息，第一配置信息包括RO信息；
接口，还用于接收第一消息，该第一消息承载在目标RO组上，该目标RO组包括的RO数量为N，N为大于0的整数；
逻辑电路，用于根据目标RO组确定目标SSB，目标SSB对应目标RO组。
接口，还用于根据目标SSB发送第二消息。
在一种可能的实现方式中，接口，还用于发送第二配置信息，第二配置信息用于指示至少一个第一重复传输次数，该至少一个第一重复传输次数用于确定第一消息的重复传输次数。
在一种可能的实现方式中，接口，还用于接收第三消息，以及发送第四消息。
在一种可能的实现方式中，接口，还用于发送第三配置信息，第三配置信息用于配置至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，该至少一个第一重复传输次数中每个第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系用于确定第三消息的重复传输次数。
在一种可能的实现方式中，接口，还用于发送指示信息，指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数，第一目标重复传输次数为第一消息的重复传输次数，第二目标重复传输次数为第三消息的重复传输次数。
可理解，本申请实施例示出的通信装置可以采用硬件的形式实现本申请实施例提供的方法，也可以采用软件的形式实现本申请实施例提供的方法等，本申请实施例对此不作限定。
本申请实施例中，关于第一配置消息、第二配置信息、第三配置信息、第一消息、第二消息、第三消息、第四消息、第一目标重复传输次数、第二目标重复传输次数、目标RO组等说明还可以参考上文方法实施例中的介绍，这里不再一一详述。
如图9所示，图9是本申请实施例提供的一种模组设备的结构示意图。该模组设备900 可以执行前述方法实施例中通信装置的相关步骤，该模组设备900包括：通信模组901、电源模组902、存储模组903以及芯片模组904。其中，电源模组902用于为模组设备提供电能；存储模组903用于存储数据和指令；通信模组901用于进行模组设备内部通信，或者用于模组设备与外部设备进行通信；芯片模组904可执行上述如图2、图3、图6所示的通信方法，以及相关实施方式所执行的步骤。
可理解，关于芯片模组的具体说明，还可以参考图7或图8等，这里不再详述。
本申请实施例还提供了一种无线通信系统，该无线通信系统包括终端设备和网络设备，该终端设备和该网络设备可以用于执行前述任一实施例中的方法。
此外，本申请还提供一种计算机程序，该计算机程序用于实现本申请提供的方法中由终端设备执行的操作和/或处理。
本申请还提供一种计算机程序，该计算机程序用于实现本申请提供的方法中由网络设备执行的操作和/或处理。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行本申请提供的方法中由终端设备执行的操作和/或处理。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行本申请提供的方法中由网络设备执行的操作和/或处理。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得本申请提供的方法中由终端设备执行的操作和/或处理被执行。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得本申请提供的方法中由网络设备执行的操作和/或处理被执行。所述计算机可读存储介质可以是前述任一实施例所述的终端设备的内部存储单元，例如设备的硬盘或内存。所述计算机可读存储介质也可以是所述终端设备的外部存储设备，例如所述设备上配备的插接式硬盘，智能存储卡(smart media card，SMC)，安全数字(secure digital，SD)卡，闪存卡(flash card)等。进一步地，所述计算机可读存储介质还可以既包括所述终端设备的内部存储单元也包括外部存储设备。所述计算机可读存储介质用于存储所述计算机程序以及所述终端设备所需的其他程序和数据。所述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。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包含一个或多个可用介质集合的服务器、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)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质。半导体介质可以是固态硬盘。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例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指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机 可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机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。
应理解，在本申请的各种实施例中，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，而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和系统，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的；例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式；例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器等)执行本发明各个实施例所述方法的部分步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本申请一种较佳实施例而已，当然不能以此来限定本申请之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本申请权利要求所作的等同变化，仍属于申请所涵盖的范围。

Claims (44)

  1. 一种通信方法，其特征在于，应用于第一通信装置，所述方法包括：
    获取第一配置信息，所述第一配置信息包括物理随机接入信道时机RO信息，所述RO信息至少用于确定目标RO组；
    根据所述目标RO组和第一目标重复传输次数发送第一消息，所述目标RO组对应目标同步信号块SSB，所述目标RO组中包括的RO数量为N，所述第一目标重复传输次数小于或等于所述N，所述N为大于0的整数。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述目标RO组和第一目标重复传输次数发送第一消息之前，所述方法还包括：
    获取第二配置信息，所述第二配置信息用于指示至少一个第一重复传输次数，所述第一目标重复传输次数为所述至少一个第一重复传输次数中的一个重复传输次数。
  3. 根据权利要求2所述的方法，其特征在于，所述目标RO组中包括的RO数量与所述至少一个第一重复传输次数中取值最大的重复传输次数的取值相同。
  4. 根据权利要求1所述的方法，其特征在于，所述N的取值由第二通信装置配置。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述目标RO组中包括的N个RO对应的资源在时域上是连续的，所述目标RO组为至少一个RO组中的一个RO组，所述至少一个RO组根据所述RO信息和所述N得到。
  6. 根据权利要求5所述的方法，其特征在于，所述至少一个RO组为SSB和RO之间的关联周期内的RO组。
  7. 根据权利要求5或6所述的方法，其特征在于，所述目标SSB为第二通信装置发送的SSB候选集中的一个SSB，所述第二通信装置发送的SSB候选集中的每个SSB与RO组具有对应关系。
  8. 根据权利要求7所述的方法，其特征在于，所述至少一个RO组先按照频域资源的索引升序排序；然后按照时域资源的索引升序排序。
  9. 根据权利要求8所述的方法，其特征在于，在所述SSB候选集中的SSB和所述至少一个RO组映射时，按照所述SSB候选集中的SSB的索引的升序映射。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述目标RO组对应至少一个SSB，所述至少一个SSB包括所述目标SSB，所述至少一个SSB为第二通信装置发送的SSB候选集中的SSB。
  11. 根据权利要求10所述的方法，其特征在于，在所述至少一个SSB和所述目标RO组对应的前导码索引映射时，按照所述目标RO组对应的前导码索引的升序映射。
  12. 根据权利要求1-11任一项所述的方法，其特征在于，所述目标RO组是根据所述目标SSB确定的，所述目标SSB是所述第一通信装置得到的第二通信装置发送的SSB候选集的测量结果中信号质量大于预设阈值的SSB。
  13. 根据权利要求1-12任一项所述的方法，其特征在于，所述第一目标重复传输次数基于以下信息中的至少一项得到：
    所述第一通信装置与第二通信装置之间的信号质量、星历信息、位置信息。
  14. 根据权利要求1-12任一项所述的方法，其特征在于，所述第一目标重复传输次数 由第二通信装置配置。
  15. 根据权利要求1-14任一项所述的方法，其特征在于，所述方法还包括：
    接收来自第二通信装置的第二消息；
    根据第二目标重复传输次数发送第三消息，所述第二目标重复传输次数与所述第一目标重复传输次数对应；
    接收来自所述第二通信装置的第四消息。
  16. 根据权利要求15所述的方法，其特征在于，所述第二目标重复传输次数是所述第一目标重复传输次数对应的至少一个第二重复传输次数中的一个重复传输次数。
  17. 根据权利要求16所述的方法，其特征在于，所述根据第二目标重复传输次数发送第三消息之前，所述方法还包括：
    获取第三配置信息，所述第三配置信息用于配置至少一个第一重复传输次数中每个所述第一重复传输次数的取值与所述第二重复传输次数的取值的对应关系，其中，每个所述第一重复传输次数的取值对应至少一个所述第二重复传输次数的取值。
  18. 根据权利要求16或17所述的方法，其特征在于，所述根据第二目标重复传输次数发送第三消息之前，所述方法还包括：
    接收指示信息，所述指示信息用于指示所述第一目标重复传输次数对应的至少一个第二重复传输次数中的所述第二目标重复传输次数。
  19. 根据权利要求18所述的方法，其特征在于，所述指示信息由调度所述第二消息的下行控制信息DCI中的调制与编码方案MCS指示比特域承载。
  20. 一种通信方法，其特征在于，应用于第二通信装置，所述方法包括：
    发送第一配置信息，所述第一配置信息包括物理随机接入信道时机RO信息，所述RO信息至少用于确定目标RO组；
    接收第一消息，所述第一消息承载在所述目标RO组上，所述目标RO组中包括的RO数量为N，所述N为大于0的整数；
    根据所述目标RO组确定目标SSB，所述目标SSB对应所述目标RO组；
    根据所述目标SSB发送第二消息。
  21. 根据权利要求20所述的方法，其特征在于，所述方法还包括：
    发送第二配置信息，所述第二配置信息用于指示至少一个第一重复传输次数，所述至少一个第一重复传输次数用于确定所述第一消息的重复传输次数。
  22. 根据权利要求21所述的方法，其特征在于，所述目标RO组中包括的RO数量与所述至少一个第一重复传输次数中取值最大的重复传输次数的取值相同。
  23. 根据权利要求20或21所述的方法，其特征在于，所述N的取值由所述第二通信装置配置。
  24. 根据权利要求20-23任一项所述的方法，其特征在于，所述目标RO组中包括的N个RO对应的资源在时域上是连续的，所述目标RO组为至少一个RO组中的一个RO组，所述至少一个RO组根据所述RO信息和所述N得到。
  25. 根据权利要求24所述的方法，其特征在于，所述至少一个RO组为SSB与RO之间的关联周期内的RO组。
  26. 根据权利要求25所述的方法，其特征在于，所述目标SSB为所述第二通信装置发送的SSB候选集中的一个SSB，所述第二通信装置发送的SSB候选集中的每个SSB与RO组具有对应关系。
  27. 根据权利要求24-26任一项所述的方法，其特征在于，所述至少一个RO组先按照频域资源的索引升序排序；然后按照时域资源的索引升序排序。
  28. 根据权利要求27所述的方法，其特征在于，在所述SSB候选集中的SSB和所述至少一个RO组映射时，按照所述SSB候选集中的SSB的索引的升序映射。
  29. 根据权利要求20-28任一项所述的方法，其特征在于，所述目标RO组对应至少一个SSB，所述至少一个SSB包括所述目标SSB，所述至少一个SSB为所述第二通信装置发送的SSB候选集中的SSB。
  30. 根据权利要求29所述的方法，其特征在于，在所述至少一个SSB和所述目标RO组对应的前导码索引映射时，按照所述目标RO组对应的前导码索引的升序映射。
  31. 根据权利要求21-23任一项所述的方法，其特征在于，所述方法还包括：
    发送第三配置信息，所述第三配置信息用于配置所述至少一个第一重复传输次数中每个所述第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系，所述至少一个第一重复传输次数中每个所述第一重复传输次数的取值与第二重复传输次数的取值之间的对应关系用于确定第三消息的重复传输次数。
  32. 根据权利要求31所述的方法，其特征在于，所述方法还包括：
    发送指示信息，所述指示信息用于指示第一目标重复传输次数对应的至少一个第二重复传输次数中的第二目标重复传输次数，所述第一目标重复传输次数为所述第一消息的重复传输次数，所述第二目标重复传输次数为所述第三消息的重复传输次数。
  33. 根据权利要求32所述的方法，其特征在于，所述指示信息由调度所述第二消息的下行控制信息DCI中的调制与编码方案MCS指示比特域承载。
  34. 一种通信装置，其特征在于，包括用于执行如权利要求1至19任一项所述方法的单元。
  35. 一种通信装置，其特征在于，包括用于执行如权利要求20-33任一项所述方法的单元。
  36. 一种通信装置，其特征在于，所述通信装置包括处理器和存储器，所述处理器和所述存储器相互连接，其中，所述存储器用于存储指令，所述处理器用于调用所述指令，使得权利要求1至19任一项所述的方法被实现。
  37. 一种通信装置，其特征在于，所述通信装置包括处理器和存储器，所述处理器和所述存储器相互连接，其中，所述存储器用于存储指令，所述处理器用于调用所述指令，使得权利要求20至33任一项所述的方法被实现。
  38. 一种芯片，其特征在于，所述芯片包括逻辑电路与接口，所述逻辑电路和所述接口耦合；所述接口用于输入信号和/或输出信号，所述逻辑电路用于执行代码指令，以使权利要求1至19任一项所述的方法被执行。
  39. 一种芯片，其特征在于，所述芯片包括逻辑电路与接口，所述逻辑电路和所述接口耦合；所述接口用于输入信号和/或输出信号，所述逻辑电路用于执行代码指令，以使权 利要求20至33任一项所述的方法被执行。
  40. 一种模组设备，其特征在于，所述模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：
    所述电源模组用于为所述模组设备提供电能；
    所述存储模组用于存储数据和指令；
    所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；
    所述芯片模组用于执行如权利要求1至19任一项所述的方法。
  41. 一种模组设备，其特征在于，所述模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：
    所述电源模组用于为所述模组设备提供电能；
    所述存储模组用于存储数据和指令；
    所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；
    所述芯片模组用于执行如权利要求20至33任一项所述的方法。
  42. 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存储有计算机程序，所述计算机程序被执行时，如权利要求1至19任一项所述的方法被实现。
  43. 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存储有计算机程序，所述计算机程序被执行时，如权利要求20至33任一项所述的方法被实现。
  44. 一种通信系统，其特征在于，包括第一通信装置和第二通信装置，所述第一通信装置用于执行如权利要求1-19任一项所述的方法，所述第二通信装置用于执行如权利要求20-33任一项所述的方法。
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