WO2023125343A1 - Procédé et appareil d'accès aléatoire - Google Patents

Procédé et appareil d'accès aléatoire Download PDF

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Publication number
WO2023125343A1
WO2023125343A1 PCT/CN2022/141717 CN2022141717W WO2023125343A1 WO 2023125343 A1 WO2023125343 A1 WO 2023125343A1 CN 2022141717 W CN2022141717 W CN 2022141717W WO 2023125343 A1 WO2023125343 A1 WO 2023125343A1
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WIPO (PCT)
Prior art keywords
random access
message
repeatedly transmit
sending
messages
Prior art date
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PCT/CN2022/141717
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English (en)
Chinese (zh)
Inventor
张萌
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展讯通信（上海）有限公司
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Publication of WO2023125343A1 publication Critical patent/WO2023125343A1/fr

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    • 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
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource 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
    • 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
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present invention relates to the communication field, in particular to a random access method and device.
  • a terminal device establishes a connection with a network device, and this process is generally called a random access (RA) process.
  • the terminal device may send a random access message to the network device to perform random access.
  • some enhancements can be made to the transmission of random access messages. For example, coverage may be enhanced by repeatedly transmitting random access messages.
  • the terminal device may use the same sending beam to repeatedly transmit the random access message, or the terminal device may use different sending beams to repeatedly transmit the random access message.
  • the terminal device cannot determine how to transmit the random access message.
  • the present application provides a random access method and device.
  • a terminal device not only supports the repeated transmission of random access messages using the same transmission beam, but also supports the use of different transmission beams to repeatedly transmit random access messages, the terminal device can determine How to transmit random access messages.
  • the present application provides a random access method, which is applied to a terminal device, and the method includes:
  • the terminal device In the initial random access process, use the same transmission beam to repeatedly transmit the random access message, or use different transmission beams to repeatedly transmit the random access message, or send a random access message; wherein, the terminal device supports repeated transmission using the same transmission beam Random access messages, and support for repeated transmission of random access messages using different transmit beams.
  • the terminal device when the terminal device not only supports the repeated transmission of the random access message by using the same transmission beam, but also supports the repeated transmission of the random access message by using different transmission beams, it can determine how to transmit the random access message information.
  • the system message sent by the network device can also be received, and the system message indicates: the same sending beam is used to repeatedly transmit the random access message during the initial random access process, or the random access message is transmitted using the same beam during the initial random access process.
  • the random access message is repeatedly transmitted by different sending beams, or the random access message is sent once during the initial random access process.
  • the random access message can be sent more flexibly during the initial random access process.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the second random access resource is configured in the system message When accessing resources, the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process; wherein, the first random access resource is the random access resource used to repeatedly transmit random access messages using the same transmission beam. resources, where the second random access resource is a random access resource used to repeatedly transmit random access messages using different transmission beams.
  • the way of sending the random access message can be implicitly indicated, which is beneficial to reduce the indication overhead.
  • the system message when the first random access resource and the second random access resource are not configured in the system message, the system message indicates to send a random access message once during the initial random access process. Based on this possible implementation manner, the way of sending the random access message can be implicitly indicated, which is beneficial to reduce the indication overhead.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the first random access resource is not configured in the system information.
  • the system message indicates to send a random access message once during the initial random access process; wherein, the first random access resource is a random access resource used to repeatedly transmit random access messages using the same sending beam.
  • the way of sending the random access message can be implicitly indicated, which is beneficial to reduce the indication overhead.
  • the system information indicates that different transmission beams are used to repeatedly transmit the random access message in the initial random access process; the second random access resource is not configured in the system information.
  • the system message indicates that a random access message is sent once during the initial random access process; the second random access resource is a random access resource used to repeatedly transmit random access messages using different sending beams.
  • the way of sending the random access message can be implicitly indicated, which is beneficial to reduce the indication overhead.
  • the system message is a system information block SIB or a master information block MIB.
  • the present application provides a random access method, which is applied to a network device, and the method includes:
  • Send a system message to the terminal device indicates: use the same transmission beam to repeatedly transmit the random access message during the initial random access process, or use a different transmission beam to repeatedly transmit the random access message during the initial random access process, or , sending a random access message once during the initial random access process; wherein, the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the second random access resource is configured in the system message When accessing resources, the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process; wherein, the first random access resource is the random access resource used to repeatedly transmit random access messages using the same transmission beam. resources, where the second random access resource is a random access resource used to repeatedly transmit random access messages using different transmission beams.
  • the system message indicates to send a random access message once during the initial random access process.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the first random access resource is not configured in the system information.
  • the system message indicates to send a random access message once during the initial random access process; wherein, the first random access resource is a random access resource used to repeatedly transmit random access messages using the same sending beam.
  • the system information indicates that different transmission beams are used to repeatedly transmit the random access message in the initial random access process; the second random access resource is not configured in the system information.
  • the system message indicates that a random access message is sent once during the initial random access process; the second random access resource is a random access resource used to repeatedly transmit random access messages using different sending beams.
  • the system message is a system information block SIB or a master information block MIB.
  • the present application provides a random access method, which is applied to a terminal device, and the method includes:
  • the RRC signaling indicates that the same transmission beam is used to repeatedly transmit the random access message in the non-initial random access process, or indicates that a different transmission beam is used in the non-initial random access process Repeated transmission of random access messages;
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the terminal device can send the random access message more flexibly during the non-initial random access process.
  • the present application provides a random access method, which is applied to a network device, and the method includes:
  • RRC signaling Send radio resource control RRC signaling to the terminal device, and the RRC signaling indicates that the same transmission beam is used to repeatedly transmit the random access message during the non-initial random access process, or indicates that different transmission beams are used to repeatedly transmit the random access message during the non-initial random access process transmit random access messages;
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the terminal device Based on the method described in the fourth aspect, it is beneficial for the terminal device to send the random access message more flexibly during the non-initial random access process.
  • the present application provides a random access method, which is applied to a terminal device, and the method includes:
  • the random access message is repeatedly transmitted using the same or different transmission beams; wherein, the terminal device supports the repeated transmission of the random access message using the same transmission beam, and supports the use of The random access message is repeatedly transmitted with different transmit beams.
  • the terminal device can flexibly determine the sending mode of the random access message by itself, without requiring the network device to indicate the sending mode of the random access message, which is beneficial to saving transmission resources.
  • the random access message is repeatedly transmitted using the same or different transmit beams based on the maximum value among multiple reference signal measurement results, including:
  • the maximum value among the multiple reference signal measurement results is less than or not greater than the first threshold, then use different transmission beams to repeatedly transmit the random access message.
  • the random access message is repeatedly transmitted using the same or different transmit beams based on the maximum value among multiple reference signal measurement results, including:
  • the same transmit beam is used to repeatedly transmit the random access message.
  • the present application provides a random access device, which includes a unit for performing the method in the above first aspect or any possible implementation thereof, or the device includes a unit for performing the above second The unit of the method in the aspect or any possible implementation thereof, or the device includes a unit for performing the method in the third aspect or any possible implementation thereof, or the device includes a unit for performing the above The unit of the method in the fourth aspect or any possible implementation thereof, or the device includes a unit for performing the method in the fifth aspect or any possible implementation thereof.
  • the present application provides a chip, the chip includes a processor and a communication interface, and the processor is configured to enable the method in the above first aspect of the chip or any possible implementation thereof, or the processor is configured to Configured to enable the method in the above-mentioned second aspect of the chip or any possible implementation thereof, or the processor is configured to enable the method in the above-mentioned third aspect of the chip or any possible implementation thereof, or process
  • the processor is configured to execute the method in the above-mentioned fourth aspect of the chip or any possible implementation thereof, or the processor is configured to execute the method in the above-mentioned fifth aspect of the chip or any possible implementation thereof.
  • the present application provides a module device, which includes a communication module, a power module, a storage module, and a chip, wherein: the power module is used to provide power for the module device; the 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 is used to implement the above-mentioned first aspect or any one thereof
  • the method in a possible implementation, or the chip is used to execute the method in the above second aspect or any possible implementation thereof, or the chip is used to execute the above third aspect or any possible implementation thereof
  • the method in the above, or the chip is used to execute the method in the fourth aspect or any possible implementation thereof, or the chip is used to execute the method in the fifth aspect or any possible implementation thereof.
  • the embodiment of the present invention discloses a random access device, the random access device includes a memory and a processor, the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to Invoke the program instruction, execute the method in the above first aspect or any possible implementation thereof, or execute the method in the above second aspect or any possible implementation thereof, or execute the above third aspect or its implementation The method in any possible implementation manner, or execute the method in the fourth aspect or any possible implementation manner above, or execute the method in the fifth aspect or any possible implementation manner above.
  • the present application provides a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable instruction, and when the computer-readable instructions are run on a communication device, the communication device executes the above-mentioned first aspect or the method in any possible implementation thereof, or make the communication device execute the above second aspect or the method in any possible implementation thereof, or make the communication device execute the above third aspect or any one thereof the method in one possible implementation manner, or make the communication device perform the method in the above fourth aspect or any possible implementation manner thereof, or cause the communication device to perform the above fifth aspect or any one of its possible implementation manners methods in methods.
  • the present application provides a computer program or a computer program product, including codes or instructions.
  • the computer executes the computer program described in the first aspect or any possible implementation thereof.
  • method or make the computer perform the method in the second aspect or any possible implementation thereof, or cause the computer to perform the method in the third aspect or any possible implementation thereof, or cause the computer to perform the method in the first aspect
  • FIG. 1 is a schematic diagram of a 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 random access method provided in an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a random access method provided in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a random access device provided in an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another random access device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another random access device provided by an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • general packet radio service general packet radio service, GPRS
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD frequency division duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G Fifth Generation
  • 5G new radio
  • NR new radio
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application, and the solution in the present application is applicable to the communication system.
  • the communication system may include a network device and at least one terminal device.
  • FIG. 1 takes a communication system including a network device and three terminal devices as an example.
  • Terminal equipment includes equipment that provides voice and/or data connectivity to users.
  • terminal equipment is a device with wireless transceiver capabilities that can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed in On the water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal can be a mobile phone, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, or a wireless terminal in industrial control (industrial control) , vehicle terminal equipment, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, Wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, etc.
  • the embodiments of the present application do not limit the application scenarios.
  • a terminal may sometimes be referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, terminal equipment, wireless communication equipment, UE proxy or UE device, etc.
  • Terminals can also be fixed or mobile.
  • the device used to realize the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system or a combined device or component that can realize the function of the terminal device. Can be installed in terminal equipment.
  • the network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), and a next-generation base station (next station) in the fifth generation (5th generation, 5G) mobile communication system.
  • generation NodeB, gNB the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.
  • the network device may also be a module or unit that performs some functions of the base station, for example, it may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU).
  • the CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and also completes the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station
  • the functions of the radio link control layer and the medium access control (medium access control, MAC) layer can also complete the functions of part or all of the physical layer.
  • 3GPP 3rd generation partnership project
  • the network equipment may be a macro base station, a micro base station or an indoor station, or a relay node or a donor node.
  • the device for implementing the function of the network device may be the network device itself, or a device capable of supporting the network device to realize the function, such as a chip system or a combined device or component that can realize the function of the access network device,
  • the device can be installed in network equipment.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • the present application provides A random access method, device, chip and module equipment.
  • the random access method, device, chip, and module device provided in the embodiments of the present application are further described in detail below.
  • Fig. 2 is a schematic flowchart of a random access method provided by an embodiment of the present application.
  • the random access method includes step 201 as follows.
  • the execution subject of the method shown in FIG. 2 may be a terminal device and a network device.
  • the execution subject of the method shown in FIG. 2 may be a chip in the terminal device and a chip in the network device.
  • Figure 2 uses terminal equipment and network equipment as the execution subject of the method as an example for illustration.
  • the terminal device uses the same transmission beam to repeatedly transmit the random access message, or the terminal device uses different transmission beams to repeatedly transmit the random access message, or the terminal device sends the random access message once.
  • the network device can receive the random access message transmitted by the terminal device.
  • the random access information may refer to a physical random access channel (physical random access channel, PRACH), or Message-1 (Msg.1), or a Preamble sequence.
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the terminal device uses the same transmission beam to repeatedly transmit the random access message as transmission method 1, and the terminal device uses different transmission beams to repeatedly transmit the random access message as transmission method 2, and the terminal device sends the random access message once
  • the random access message is referred to as transmission mode 3.
  • the terminal device may adopt transmission mode 1 by default.
  • the terminal device may adopt transmission mode 2 by default.
  • the terminal device may adopt transmission mode 3 by default.
  • the network device does not know the capability information of the terminal device, that is, the network device does not know which random access message transmission modes the terminal device supports. Therefore, the network device cannot indicate to the terminal device which method the terminal device should use to send the random access message for initial random access. Therefore, the terminal device may adopt transmission mode 1, transmission mode 2 or transmission mode 3 by default during the initial random access process.
  • the network device may also send a system message to the terminal device, and the system message indicates: the same sending beam is used to repeatedly transmit the random access message during the initial random access process, or, The random access message is transmitted repeatedly by using different sending beams, or the random access message is sent once during the initial random access process.
  • the terminal device may also receive the system message sent by the network device. During the initial random access process, the terminal device sends a random access message based on the sending mode indicated by the system message. Based on this possible implementation, the terminal device can send the random access message more flexibly during the initial random access process.
  • the network device defaults that the terminal device supports at least two of transmission mode 1, transmission mode 2, and transmission mode 3.
  • the network device can instruct the terminal device to use transmission mode 1 or transmission mode 2 through a system message.
  • the network device can instruct the terminal device to use transmission mode 1 or transmission mode 3 through the system message.
  • the network device can instruct the terminal device to use transmission mode 2 or transmission mode 3 through a system message.
  • the network device can instruct the terminal device to use transmission mode 1, transmission mode 2, or transmission mode 3 through a system message.
  • Mode 1 Instruct the terminal device to adopt the transmission mode 1 or the transmission mode 2 in the system message.
  • the terminal device when the system message includes the identifier of the transmission mode 1, the terminal device is instructed to adopt the transmission mode 1; when the system message includes the identification of the transmission mode 2, the terminal device is instructed to adopt the transmission mode 2.
  • Mode 2 implicitly instruct the terminal device to adopt transmission mode 1 or transmission mode 2 in the system message.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process (that is, the transmission mode 1 is used); the second random access resource is configured in the system information.
  • the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process (that is, transmission mode 2 is used); wherein, the first random access resource is to use the same transmission beam to repeatedly transmit random access messages.
  • the random access resource used by the access message, and the second random access resource is a random access resource used for repeated transmission of the random access message by using different transmission beams.
  • the method of implicitly instructing the terminal device to send the random access message is beneficial to reduce the indication overhead.
  • Mode 1 Instruct the terminal device to adopt transmission mode 1 or transmission mode 3 in a system message.
  • the terminal device when the system message includes the identifier of the transmission mode 1, the terminal device is instructed to adopt the transmission mode 1; when the system message includes the identification of the transmission mode 3, the terminal device is instructed to adopt the transmission mode 3.
  • Mode 2 implicitly instruct the terminal device to adopt transmission mode 1 or transmission mode 3 in the system message.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process (that is, the transmission mode 1 is used); the system information is not configured with the first random access resource.
  • the system message indicates that a random access message is to be sent once during the initial random access process (that is, the transmission method 2 is adopted); wherein, the first random access resource is to use the same transmission beam to repeatedly transmit the random access message The random access resources used.
  • the method of implicitly instructing the terminal device to send the random access message is beneficial to reduce the indication overhead.
  • Mode 1 Instruct the terminal device to adopt transmission mode 2 or transmission mode 3 in a system message.
  • the terminal device when the system message includes the identifier of the transmission mode 2, the terminal device is instructed to adopt the transmission mode 2; when the system message includes the identification of the transmission mode 3, the terminal device is instructed to adopt the transmission mode 3.
  • Mode 2 implicitly instruct the terminal device to adopt transmission mode 2 or transmission mode 3 in the system message.
  • the system information indicates that different transmission beams are used to repeatedly transmit the random access message during the initial random access process (that is, the transmission mode 2 is used); the system information does not configure the second random access resource.
  • the system message indicates that a random access message is sent once during the initial random access process (that is, the transmission method 3 is adopted); the second random access resource is used for repeated transmission of random access messages using different transmission beams Random access to resources.
  • the method of implicitly instructing the terminal device to send the random access message is beneficial to reduce the indication overhead.
  • Mode 1 Instruct the terminal device to adopt transmission mode 1, transmission mode 2, or transmission mode 3 in a system message.
  • the terminal device when the system message includes the identification of transmission mode 1, the terminal device is instructed to adopt transmission mode 1; when the system message includes the identification of transmission mode 2, the terminal device is instructed to adopt transmission mode 2; when the system message includes the identification of transmission mode 3 , instructing the terminal device to adopt sending mode 3.
  • Mode 2 implicitly instruct the terminal device to adopt transmission mode 1, transmission mode 2, or transmission mode 3 in the system message.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process (that is, the transmission mode 1 is used); the second random access resource is configured in the system information.
  • the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process (that is, transmission mode 2 is used); the first random access resource and the second random access resource are not configured in the system message.
  • the system message indicates to send a random access message once during the initial random access process (that is, adopt sending mode 3).
  • the first random access resource is a random access resource used for repeatedly transmitting a random access message by using the same transmission beam
  • the second random access resource is a random access resource used for repeatedly transmitting a random access message by using a different transmission beam.
  • the method of implicitly instructing the terminal device to send the random access message is beneficial to reduce the indication overhead.
  • system message may be a system information block (system information block, SIB) or a master information block (master information block, MIB).
  • SIB system information block
  • MIB master information block
  • the terminal device when the terminal device not only supports the repeated transmission of the random access message by using the same transmission beam, but also supports the repeated transmission of the random access message by using different transmission beams, the terminal device can determine how to transmit the random access message Random access messages.
  • Fig. 3 is a schematic flowchart of a random access method provided by an embodiment of the present application.
  • the random access method includes the following steps 301 and 302 .
  • the execution subject of the method shown in FIG. 3 may be a terminal device and a network device.
  • the execution subject of the method shown in FIG. 3 may be a chip in the terminal device and a chip in the network device.
  • FIG. 3 is illustrated by taking the terminal device and the network device as execution bodies of the method as examples.
  • the network device sends RRC signaling to the terminal device, and the RRC signaling indicates that the terminal device uses the same transmission beam to repeatedly transmit random access messages during the non-initial random access process, or instructs the terminal device to repeatedly transmit random access messages during the non-initial random access process.
  • different transmission beams are used to repeatedly transmit random access messages.
  • the terminal device can receive the RRC signaling.
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the terminal device sends a random access message based on RRC signaling.
  • the network device can receive the random access message.
  • the terminal device uses the same transmission beam to repeatedly transmit the random access message in the non-initial random access process. If the RRC signaling indicates that the terminal device uses different transmission beams to repeatedly transmit the random access message during the non-initial random access process, then the terminal device uses different transmission beams to repeatedly transmit the random access message during the non-initial random access process.
  • the terminal device may report its capability information to the network device through high-layer signaling.
  • the network device can know that the terminal device supports the repeated transmission of random access messages using the same transmission beam, and supports the repeated transmission of random access messages using different transmission beams, so that the network device can indicate to the terminal device that in the non-initial random access process Which sending method is selected to send the random access message.
  • the terminal device does not need to report the capability information.
  • the network device can default that the terminal device supports repeated transmission of random access messages using the same sending beam, and supports repeated transmission of random access messages using different sending beams.
  • the terminal device can send the random access message more flexibly during the non-initial random access process.
  • Fig. 4 is a schematic flowchart of a random access method provided by an embodiment of the present application.
  • the random access method includes the following step 401 .
  • the execution subject of the method shown in FIG. 4 may be a terminal device and a network device.
  • the execution subject of the method shown in FIG. 4 may be a chip in the terminal device and a chip in the network device.
  • FIG. 4 uses a terminal device and a network device as execution subjects of the method as examples for illustration.
  • the terminal device measures multiple reference signals, and obtains multiple reference signal measurement results.
  • the measurement result may be reference signal receiving power (reference signal receiving power, RSRP), or other reference signal measurement results, which are not limited in this embodiment of the present application.
  • RSRP reference signal receiving power
  • the reference signal may be a synchronous signal block (synchronous signal block, SSB) or a channel state information-reference signal (CSI-reference signal, CSI-RS).
  • SSB synchronous signal block
  • CSI-reference signal CSI-RS
  • the terminal device repeatedly transmits a random access message by using the same or different sending beams based on the maximum value among the multiple reference signal measurement results.
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the terminal device uses the same or different transmission beams to repeatedly transmit the random access message based on the maximum value among the multiple reference signal measurement results.
  • the terminal device uses the same or different transmit beams to repeatedly transmit the random access message based on the maximum value of the multiple reference signal measurement results as follows:
  • the terminal device uses the same transmission beam to repeatedly transmit the random access message
  • the terminal device uses different transmission beams to repeatedly transmit the random access message.
  • the terminal device uses the same or different transmit beams to repeatedly transmit the random access message based on the maximum value of the multiple reference signal measurement results as follows:
  • the terminal device uses different transmission beams to repeatedly transmit the random access message
  • the terminal device uses the same sending beam to repeatedly transmit the random access message.
  • the first threshold may be predetermined by the protocol or configured by the network device.
  • the network device can distinguish the specific use of the terminal device by receiving the resource location or resource index number of the random access message Which sending method is used to send the random access message.
  • the terminal device can flexibly determine the sending mode of the random access message by itself, and the network device does not need to indicate the sending mode of the random access message, which is beneficial to saving transmission resources.
  • An embodiment of the present invention provides a random access device, and the random access device may be a terminal device or a device (such as a chip) having a terminal device function.
  • the random access device may include:
  • the sending unit is configured to use the same sending beam to repeatedly transmit the random access message, or use different sending beams to repeatedly transmit the random access message, or to send the random access message once during the initial random access process;
  • the random access apparatus supports repeated transmission of random access messages by using the same sending beam, and supports repeated transmission of random access messages by using different sending beams.
  • the random access device may further include: a receiving unit, configured to receive a system message sent by the network device, and the system message indicates: in the initial random access process, the same sending beam is used to repeatedly transmit the random access Or, in the initial random access process, different transmission beams are used to repeatedly transmit the random access message, or, in the initial random access process, the random access message is sent once.
  • a receiving unit configured to receive a system message sent by the network device, and the system message indicates: in the initial random access process, the same sending beam is used to repeatedly transmit the random access Or, in the initial random access process, different transmission beams are used to repeatedly transmit the random access message, or, in the initial random access process, the random access message is sent once.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the second random access resource is configured in the system message When accessing resources, the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process;
  • the first random access resource is a random access resource used for repeatedly transmitting a random access message by using the same transmission beam
  • the second random access resource is a random access resource used for repeatedly transmitting a random access message by using a different transmission beam.
  • the system message when the first random access resource and the second random access resource are not configured in the system message, the system message indicates to send a random access message once during the initial random access process.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the first random access resource is not configured in the system information.
  • the system message indicates to send a random access message during the initial random access process;
  • the first random access resource is a random access resource used to repeatedly transmit random access messages by using the same sending beam.
  • the system information indicates that different transmission beams are used to repeatedly transmit the random access message in the initial random access process; the second random access resource is not configured in the system information.
  • the system message indicates to send a random access message during the initial random access process;
  • the second random access resource is a random access resource used to repeatedly transmit random access messages by using different sending beams.
  • the system message is a system information block SIB or a master information block MIB.
  • An embodiment of the present invention provides a random access device, and the random access device may be a network device or a device (such as a chip) having a network device function.
  • the random access device may include:
  • the sending unit is configured to send a system message to the terminal device, and the system message indicates: use the same sending beam to repeatedly transmit the random access message during the initial random access process, or use different sending beams to repeatedly transmit the random access message during the initial random access process Access message, or send a random access message once during the initial random access process;
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the second random access resource is configured in the system message When accessing resources, the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process;
  • the first random access resource is a random access resource used for repeatedly transmitting a random access message by using the same transmission beam
  • the second random access resource is a random access resource used for repeatedly transmitting a random access message by using a different transmission beam.
  • the system message indicates to send a random access message once during the initial random access process.
  • the system information indicates that the same transmission beam is used to repeatedly transmit the random access message in the initial random access process; the first random access resource is not configured in the system information.
  • the system message indicates to send a random access message during the initial random access process;
  • the first random access resource is a random access resource used to repeatedly transmit random access messages by using the same sending beam.
  • the system information indicates that different transmission beams are used to repeatedly transmit the random access message in the initial random access process; the second random access resource is not configured in the system information.
  • the system message indicates to send a random access message during the initial random access process;
  • the second random access resource is a random access resource used to repeatedly transmit random access messages by using different sending beams.
  • the system message is a system information block SIB or a master information block MIB.
  • FIG. 5 is a schematic structural diagram of a random access device provided by an embodiment of the present invention.
  • the random access device may be a terminal device or a device (such as a chip) having a terminal device function.
  • the random access device 500 may include:
  • the receiving unit 501 is configured to receive the radio resource control RRC signaling sent by the network device, the RRC signaling indicates that the random access device uses the same transmission beam to repeatedly transmit the random access message in the non-initial random access process, or indicates that the random access The access device uses different transmission beams to repeatedly transmit the random access message during the non-initial random access process;
  • a sending unit 502 configured to send a random access message based on RRC signaling during a non-initial random access process
  • the random access apparatus supports repeated transmission of random access messages by using the same sending beam, and supports repeated transmission of random access messages by using different sending beams.
  • An embodiment of the present invention provides a random access device, and the random access device may be a network device or a device (such as a chip) having a network device function.
  • the random access device may include:
  • the sending unit is configured to send radio resource control RRC signaling to the terminal device, and the RRC signaling indicates that the same sending beam is used to repeatedly transmit the random access message in the non-initial random access process, or indicates that in the non-initial random access process Repeated transmission of random access messages using different transmission beams;
  • the terminal device supports repeated transmission of the random access message by using the same sending beam, and supports repeated transmission of the random access message by using different sending beams.
  • FIG. 6 is a schematic structural diagram of a random access device provided by an embodiment of the present invention.
  • the random access device may be a terminal device or a device (such as a chip) having a terminal device function.
  • the random access device 600 may include:
  • a measuring unit 601, configured to measure multiple reference signals to obtain multiple reference signal measurement results
  • the sending unit 602 is configured to use the same or different sending beams to repeatedly transmit random access messages based on the maximum value of multiple reference signal measurement results during the random access process; wherein, the random access device supports repeated transmission using the same sending beam Random access messages, and support for repeated transmission of random access messages using different transmit beams.
  • the sending unit 602 uses the same or different sending beams to repeatedly transmit the random access message based on the maximum value among the multiple reference signal measurement results, including:
  • the sending unit 602 uses the same sending beam to repeatedly transmit the random access message
  • the sending unit 602 uses different sending beams to repeatedly transmit the random access message.
  • the sending unit 602 uses the same or different sending beams to repeatedly transmit the random access message based on the maximum value among the multiple reference signal measurement results, including:
  • the transmitting unit 602 uses different transmission beams to repeatedly transmit the random access message
  • the sending unit 602 uses the same sending beam to repeatedly transmit the random access message.
  • the embodiment of the present application also provides a chip, which can execute the relevant steps of the terminal device in the foregoing method embodiments.
  • the chip includes a processor and a communication interface, the processor is configured to cause the chip to perform the following operations:
  • the chip supports repeated transmission of random access messages by using the same sending beam, and supports repeated transmission of random access messages by using different sending beams.
  • the processor is configured to cause the chip to perform the following operations:
  • the system message indicating: use the same transmission beam to repeatedly transmit the random access message during the initial random access process, or use a different transmission beam to repeatedly transmit the random access message during the initial random access process message, or send a random access message once during the initial random access process.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message during the initial random access process; the system message When the second random access resource is configured in the system message, the system message indicates that different transmission beams are used to repeatedly transmit the random access message during the initial random access process;
  • the first random access resource is a random access resource used to repeatedly transmit random access messages using the same sending beam
  • the second random access resource is a random access resource used to repeatedly transmit random access messages using different sending beams. Access resources.
  • the system message indicates that a random access resource is sent once during the initial random access process. Access messages.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message during the initial random access process; the system message When the first random access resource is not configured in the system, the system message indicates to send a random access message once during the initial random access process;
  • the first random access resource is a random access resource used to repeatedly transmit random access messages by using the same sending beam.
  • the system message when the second random access resource is configured in the system message, the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process; the system message When no second random access resource is configured in the system, the system message indicates to send a random access message once during the initial random access process;
  • the second random access resource is a random access resource used to repeatedly transmit random access messages using different transmission beams.
  • the system message is a system information block SIB or a master information block MIB.
  • the embodiment of the present application also provides a chip, which can execute the relevant steps of the network device in the foregoing method embodiments.
  • the chip includes a processor and a communication interface, the processor is configured to cause the chip to perform the following operations:
  • the terminal device supports repeated transmission of random access messages by using the same sending beam, and supports repeated transmission of random access messages by using different sending beams.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message during the initial random access process; the system message When the second random access resource is configured in the system message, the system message indicates that different transmission beams are used to repeatedly transmit the random access message during the initial random access process;
  • the first random access resource is a random access resource used to repeatedly transmit random access messages using the same sending beam
  • the second random access resource is a random access resource used to repeatedly transmit random access messages using different sending beams. Access resources.
  • the system message indicates that the resource is sent once during the initial random access process. Random access messages.
  • the system message when the first random access resource is configured in the system message, the system message indicates that the same transmission beam is used to repeatedly transmit the random access message during the initial random access process; the system message When the first random access resource is not configured in the system, the system message indicates to send a random access message once during the initial random access process;
  • the first random access resource is a random access resource used to repeatedly transmit random access messages by using the same sending beam.
  • the system message when the second random access resource is configured in the system message, the system message indicates that different transmission beams are used to repeatedly transmit random access messages during the initial random access process; the system message When no second random access resource is configured in the system, the system message indicates to send a random access message once during the initial random access process;
  • the second random access resource is a random access resource used to repeatedly transmit random access messages using different transmission beams.
  • the system message is a system information block SIB or a master information block MIB.
  • the embodiment of the present application also provides a chip, which can execute the relevant steps of the terminal device in the foregoing method embodiments.
  • the chip includes a processor and a communication interface, the processor is configured to cause the chip to perform the following operations:
  • Receive radio resource control RRC signaling sent by the network device indicates that the chip uses the same transmission beam to repeatedly transmit random access messages during the non-initial random access process, or indicates that the chip During the access process, different transmission beams are used to repeatedly transmit random access messages;
  • the chip supports repeated transmission of random access messages by using the same sending beam, and supports repeated transmission of random access messages by using different sending beams.
  • the embodiment of the present application also provides a chip, which can execute the relevant steps of the network device in the foregoing method embodiments.
  • the chip includes a processor and a communication interface, the processor is configured to cause the chip to perform the following operations:
  • the RRC signaling indicates that the same transmission beam is used to repeatedly transmit the random access message in the non-initial random access process, or indicates that different transmission beams are used in the non-initial random access process The beam repeatedly transmits random access messages;
  • the terminal device supports repeated transmission of random access messages by using the same sending beam, and supports repeated transmission of random access messages by using different sending beams.
  • the embodiment of the present application also provides a chip, which can execute the relevant steps of the terminal device in the foregoing method embodiments.
  • the chip includes a processor and a communication interface, the processor is configured to cause the chip to perform the following operations:
  • the same or different transmission beams are used to repeatedly transmit the random access message; wherein, the chip supports the use of the same transmission beam to repeatedly transmit the random access message, and supports The random access message is repeatedly transmitted using different transmit beams.
  • using the same or different transmit beams to repeatedly transmit the random access message based on the maximum value among the multiple reference signal measurement results includes:
  • the maximum value among the multiple reference signal measurement results is less than or not greater than the first threshold, then use different transmission beams to repeatedly transmit the random access message.
  • using the same or different transmit beams to repeatedly transmit the random access message based on the maximum value among the multiple reference signal measurement results includes:
  • FIG. 7 is a schematic structural diagram of a random access apparatus provided by an embodiment of the present invention.
  • the random access device may be a terminal device or a network device.
  • the random access device 700 may include a memory 701 and a processor 702 .
  • a communication interface 703 is also included.
  • the memory 701, the processor 702 and the communication interface 703 are connected by one or more communication buses. Wherein, the communication interface 703 is controlled by the processor 702 for sending and receiving information.
  • the memory 701 may include read-only memory and random-access memory, and provides instructions and data to the processor 702 .
  • a portion of memory 701 may also include non-volatile random access memory.
  • the communication interface 703 is used to receive or send data.
  • the processor 702 can be a central processing unit (Central Processing Unit, CPU), and the processor 702 can also be other general processors, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor, and optionally, the processor 702 may also be any conventional processor. in:
  • the memory 701 is used for storing program instructions.
  • the processor 702 is configured to call the program instructions stored in the memory 701 .
  • the processor 702 invokes the program instructions stored in the memory 701 to make the random access apparatus 700 execute the method executed by the terminal device or the network device in the foregoing method embodiments.
  • FIG. 8 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the module device 800 can perform relevant steps of the terminal device or network device in the foregoing method embodiments, and the module device 800 includes: a communication module 801 , a power supply module 802 , a storage module 803 and a chip 804 .
  • the power supply module 802 is used to provide power for the module equipment;
  • the storage module 803 is used to store data and instructions;
  • the communication module 801 is used for internal communication of the module equipment, or for communication between the module equipment and external equipment ;
  • the chip 804 is used to execute the method executed by the terminal device or the network device in the above method embodiment.
  • the embodiment of the present application also provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instruction is run on a processor, the method flow of the above-mentioned method embodiment is implemented.
  • the embodiment of the present application further provides a computer program product.
  • the computer program product is run on a processor, the method flow of the above method embodiment is implemented.
  • each module/unit contained in the product may be a software module/unit, or a hardware module/unit, or may be partly a software module/unit and partly a hardware module/unit.
  • each module/unit contained in the product may be realized by hardware such as a circuit, or at least part of the modules/units may be realized by a software program, and the software program runs
  • the processor is integrated inside the chip, and the remaining (if any) modules/units can be realized by hardware such as circuits; Realized by means of hardware such as circuits, different modules/units can be located in the same part of the chip module (such as chips, circuit modules, etc.) or in different components, or at least part of the modules/units can be implemented in the form of software programs, the software program Running on the processor integrated in the chip module, the remaining (if any) modules/units can be realized by hardware such as circuits; It is implemented by means of hardware such as circuits, and different modules

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

Abstract

La présente demande divulgue un procédé et un appareil d'accès aléatoire. Le procédé consiste à : dans un processus d'accès aléatoire initial, utiliser un même faisceau d'envoi pour transmettre de manière répétée un message d'accès aléatoire ou utiliser différents faisceaux d'envoi pour transmettre de manière répétée un message d'accès aléatoire ou envoyer un message d'accès aléatoire primaire une fois, un dispositif terminal prenant en charge l'utilisation d'un même faisceau d'envoi pour transmettre de manière répétée un message d'accès aléatoire et prenant en charge l'utilisation de différents faisceaux d'envoi pour transmettre de manière répétée un message d'accès aléatoire. La manière de transmettre un message d'accès aléatoire peut être déterminée sur la base du procédé décrit dans la présente demande lorsqu'un dispositif terminal prend en charge à la fois l'utilisation d'un même faisceau d'envoi pour transmettre de manière répétée un message d'accès aléatoire et prend également en charge l'utilisation de différents faisceaux d'envoi pour transmettre de manière répétée un message d'accès aléatoire.
PCT/CN2022/141717 2021-12-29 2022-12-24 Procédé et appareil d'accès aléatoire WO2023125343A1 (fr)

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