WO2020173415A1 - Communication method, terminal device, and network device - Google Patents

Communication method, terminal device, and network device Download PDF

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Publication number
WO2020173415A1
WO2020173415A1 PCT/CN2020/076515 CN2020076515W WO2020173415A1 WO 2020173415 A1 WO2020173415 A1 WO 2020173415A1 CN 2020076515 W CN2020076515 W CN 2020076515W WO 2020173415 A1 WO2020173415 A1 WO 2020173415A1
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WO
WIPO (PCT)
Prior art keywords
network device
terminal device
indication information
message
network
Prior art date
Application number
PCT/CN2020/076515
Other languages
French (fr)
Chinese (zh)
Inventor
陈磊
李秉肇
唐珣
王宏
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020173415A1 publication Critical patent/WO2020173415A1/en

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Classifications

    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • This application relates to the field of communications, and more specifically to communication methods, terminal devices, and network devices. Background technique
  • Random access is an important process in cellular networks.
  • the random access code also called Msgl
  • Msgl random access code
  • RAR terminal equipment Random access response
  • Msg3 sent by the terminal device to the network device
  • Msg4 sent by the network device to the terminal device, where Msg4 includes a conflict resolution message and a message in response to Msg3.
  • the terminal device in the idle state/inactive state when the terminal device receives the Msg4 and passes the conflict resolution decision, it is considered that the random access of the terminal device is successful; for the terminal device in the connected state, the terminal device successfully receives the Msg4 , It is considered that the random access of the terminal device is successful.
  • each terminal device Due to the signaling interaction between each terminal device and network device, a certain transmission time is required (for example, in a satellite network, especially a synchronous satellite network, each signaling requires 500 milliseconds (ms) transmission time), Therefore, in the existing random access scheme, the speed at which the terminal device accesses the network is relatively slow.
  • the present application provides a communication method, terminal equipment, and network equipment, which can reduce signaling interaction between the terminal equipment and the network equipment in the random access process, thereby improving the speed of the terminal equipment accessing the network.
  • this application provides a communication method, the method includes: a terminal device determines a timing advance TA value with a first network device according to a first power and/or a first distance; the terminal device determines a TA value according to the TA value Send a first message to the first network device on the first resource; where the first power is the received power of the downlink signal from the first network device, and the first distance is the terminal device and the first network The distance between devices.
  • the downlink signal may be a downlink synchronization reference signal.
  • the downlink signal may be a synchronization signal and physical broadcast channel block (SSB).
  • SSB physical broadcast channel block
  • the network device determines the TA value of the terminal device according to the sending time and the receiving time of the random access code sent by the terminal device, and then sends it to the terminal device. This requires two signaling interactions with the terminal device. In order to know the TA value.
  • the terminal device determines or calculates the TA value with the network device according to itself, so that it can save the need for the terminal device to obtain the TA value twice in the random access process in the prior art. Signaling interaction, thereby increasing the speed of terminal equipment accessing the network.
  • the first message includes a radio resource control RRC connection establishment request message, At least one of the RRC connection recovery request message, the RRC connection reestablishment request message, the RRC reconfiguration complete message, and the cell radio network temporary identifier C-RNTI of the terminal device.
  • the first message is Msg3.
  • the method further includes: the terminal device sends the TA value to the first network device.
  • the TA value is carried in the first message.
  • the TA may also be carried in other messages.
  • the terminal device sends the determined or calculated TA value to the first network device, so that the first network device can adjust the TA value when the location of the terminal device changes.
  • the first distance is determined at least according to the location of the terminal device; or the first distance is determined at least according to the first power.
  • the distance between the terminal device and the first network device may be determined by the received power of the terminal device or the downlink signal. In this way, for terminal devices without positioning capability, the distance between the terminal devices can be determined by receiving the downlink signal, and for terminal devices with positioning capability, the distance from the first network device can be determined by positioning itself.
  • the method further includes: the terminal device receives first indication information, where the first indication information is used to indicate the first resource and the first wireless network temporary identifier RNTI, and the first resource and the There is a corresponding relationship for the first RNTI.
  • the first resource includes one or more of time domain resources, frequency domain resources, code domain resources, and space domain resources.
  • the terminal device obtains the first resource and the first RNTI through the first indication information, so that the terminal device can obtain the first resource and the first RNTI without sending Msg1 and receiving Msg2, that is, it can save The first two signaling interactions in the random access process in the prior art are eliminated, thereby increasing the speed of the terminal device accessing the network.
  • the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message
  • the RNTI used is consistent, so that the second message can be transmitted correctly.
  • the method further includes: the terminal device uses the C-RNTI or the first RNTI to receive a second message in response to the first message from the first network device.
  • the first indication information comes from the first network device; or the first indication information comes from a second network device, and the second network device is different from the first network device.
  • the first indication information may come from the first network device;
  • the first network device is the target network device, the second network device is the source network device, and the first indication information may come from the second network device. Therefore, it can be seen that the above technical solution can be applied to the case where the terminal device is in the connected state from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, and can also be applied to the terminal device from the second When the network device is switched to the first network device.
  • the method further includes: the terminal device receives second indication information, the second instruction The display information is used to instruct the terminal device to determine or calculate the timing advance TA value.
  • the first network device instructs the terminal device to determine or calculate the TA value with the first network device, so that the terminal device knows that the first network device also supports the two-step random access process, and then determines or calculates
  • the TA value can avoid problems that occur because the terminal device does not understand related information on the network side.
  • the second indication information comes from the first network device; or the second indication information comes from a second network device, and the second network device is different from the first network device.
  • the second indication information may come from the first network device;
  • the first network device is the target network device, the second network device is the source network device, and the second indication information may come from the second network device. Therefore, it can be seen that the above technical solution can be applied to the case where the terminal device is in the connected state from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, and can also be applied to the terminal device from the second When the network device is switched to the first network device.
  • the first indication information is carried in a broadcast message or RRC dedicated signaling. Understandably, when the terminal device is in the connected state from the idle state/inactive state to the connected state, or when the terminal device is in the connected state to adjust the TA value, the first indication information may be carried in the broadcast message; Second, when the network device is switched to the first network device, the first network device is the target network device and the second network device is the source network device.
  • the first indication information may be carried in RRC dedicated signaling (for example, RRC reconfiguration). With commands, etc.).
  • carrying the first indication information in the broadcast message can save signaling; in the case of terminal devices within the service range of the first network device
  • the first indication information is carried in the RRC dedicated signaling, which can save signaling. Therefore, in different situations or scenarios, the first indication information is carried in the corresponding signaling, which can save signaling between the terminal device and the network device.
  • the present application provides a communication method, the method includes: a second network device sends a handover request to a first network device, the handover request includes third indication information, and the third indication information is used to instruct the terminal device to be able to Whether to determine the timing advance TA value with the first network device; the second network device sends a switching command to the terminal device, the switching command is used to instruct the terminal device to switch from the second network device to the first network equipment.
  • the second network device indicates to the first network device whether the terminal device can determine the timing advance TA value with the first network device, so that the first network device allocates access according to the function or capability of the terminal device Resources, thereby reducing the interruption time of the connection between the terminal device and the network device, and reducing the handover failure rate.
  • the method further includes: the second network device receives a response message corresponding to the handover request from the first network device, the response message includes fourth indication information, and the fourth indication information is used To indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device.
  • the first network device indicates to the second network device that the terminal device determines or calculates the TA value between the terminal device and the first network device, so that the second network device instructs the terminal device to determine Or calculate the TA value with the first network device, so that the terminal device can know that the first network device also supports the two-step random access process, and then determine or calculate the TA value, which can avoid the terminal device not knowing the relevant information on the network And the problem arises.
  • the response message further includes the first resource and the first wireless network temporary identifier RNTI, the first resource has a corresponding relationship with the first RNTI.
  • the first network device indicates the first resource and the first time identifier RNTI to the second network device, so that the second network device indicates the first resource and the first RNTI to the terminal device, so that the terminal device does not need to send Msgl and
  • the first resource and the first RNTI can be obtained by receiving the Msg2, that is, the first two signaling interactions in the random access process of the prior art can be omitted, thereby increasing the speed of the terminal device accessing the network.
  • the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message
  • the RNTI used is consistent, so that the second message can be transmitted correctly.
  • the handover command includes first indication information, and the first indication information is used to indicate the first resource and the first RNTI, and the first resource and the first RNTI have a corresponding relationship.
  • the terminal device obtains the first resource and the first RNTI through the first indication information, so that the terminal device can obtain the first resource and the first RNTI without sending Msg1 and receiving Msg2, that is, it can save
  • the first two signaling interactions in the random access process in the prior art are eliminated, thereby increasing the speed of the terminal device accessing the network.
  • the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message
  • the RNTI used is consistent, so that the second message can be transmitted correctly.
  • the handover command further includes second indication information, and the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA value.
  • the second network device instructs the terminal device to determine or calculate the TA value with the first network device, so that the terminal device can know that the first network device also supports the two-step random access process, and then determine or calculate The TA value can avoid problems that occur because the terminal device does not understand related information on the network side.
  • the method further includes: the second network device sends a third message to the terminal device, the third message is used to request the terminal device to feed back whether it can determine or calculate the relationship with the network device TA value; and/or the second network device receives a fourth message from the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
  • the second network device determines whether the terminal device can determine or calculate the TA value information with the network device, so that the second network device feeds back the capability of the terminal device to the first network device, thereby realizing the first network
  • the device determines the resource indicated in the handover request according to the capabilities of the terminal device (for example, when the terminal device can determine or calculate the TA value, the first network device instructs the resource to send Msg3 in the handover request; when the terminal device cannot determine or calculate the TA value
  • the first network device instructs to send the resource of Msg 1 in the handover request, thereby reducing the interruption time of the connection between the terminal device and the network device and reducing the handover failure rate.
  • the present application provides a communication method, the method includes: a first network device receives a handover request from a second network device, the handover request includes third indication information, and the third indication information is used to indicate that the terminal device can Whether to determine the TA value with the first network device; the first network device determines whether the terminal device can determine the TA value with the first network device according to the third indication information.
  • the second network device indicates to the first network device whether the terminal device can determine the timing advance TA value with the first network device, so that the first network device allocates access according to the function or capability of the terminal device Resources, thereby reducing the interruption time of the connection between the terminal device and the network device, and reducing the handover failure rate.
  • the method further includes: the first network device sends a pair to the second network device In response to a response message of the handover request, the response message includes fourth indication information, and the fourth indication information is used to indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device.
  • the first network device indicates to the second network device that the terminal device determines or calculates the TA value between the terminal device and the first network device, so that the second network device instructs the terminal device to determine Or calculate the TA value with the first network device, so that the terminal device can know that the first network device also supports the two-step random access process, and then determine or calculate the TA value, which can avoid the terminal device not knowing the relevant information on the network side And the problem arises.
  • the response message further includes the first resource and the first radio network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
  • the first network device indicates the first resource and the first time identifier RNTI to the second network device, so that the second network device indicates the first resource and the first RNTI to the terminal device, so that the terminal device does not need to send Msgl and
  • the first resource and the first RNTI can be obtained by receiving the Msg2, that is, the first two signaling interactions in the random access process of the prior art can be omitted, thereby increasing the speed of the terminal device accessing the network.
  • the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message
  • the RNTI used is consistent, so that the second message can be transmitted correctly.
  • the method further includes: the first network device receives the TA value from the terminal device.
  • the TA value between the terminal device and the first network device should also change accordingly.
  • the first network device receives the TA value reported by the terminal device, so as to adjust the TA value when the location of the terminal device changes.
  • the present application provides a communication method, the method includes: a first network device sends second indication information to the terminal device, the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA Value; the first network device receives the TA value from the terminal device.
  • the first network device instructs the terminal device to determine or calculate the TA value with the first network device, so that the terminal device knows that the first network device also supports the two-step random access process, and then determines or calculates
  • the TA value can avoid problems that occur because the terminal device does not understand related information on the network side.
  • the method further includes: the first network device sends first indication information to the terminal device, where the first indication information is used to indicate the first resource and the first RNTI, the first resource and The first RNTI has a corresponding relationship.
  • the terminal device obtains the first resource and the first RNTI through the first indication information, so that the terminal device can obtain the first resource and the first RNTI without sending Msg1 and receiving Msg2, that is, it can save
  • the first two signaling interactions in the random access process in the prior art are eliminated, thereby increasing the speed of the terminal device accessing the network.
  • the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message
  • the RNTI used is consistent, so that the second message can be transmitted correctly.
  • the first indication information is carried in a broadcast message.
  • this application provides a terminal device, including a terminal device for executing the first aspect or any one of the first aspect Module in the implementation mode.
  • the present application provides a network device, including a module used to execute the second aspect or any implementation manner of the second aspect.
  • this application provides a network device, including a module used to execute the third aspect or any implementation manner of the third aspect.
  • the present application provides a network device, including a module used to execute the fourth aspect or any one of the implementation manners of the fourth aspect.
  • the present application provides a chip that is connected to a memory, or the chip includes a memory, and is configured to read and execute a software program stored in the memory to implement the first aspect or the first aspect. The method described in any one of the implementation modes.
  • the present application provides a chip that is connected to a memory, or the chip includes a memory, and is configured to read and execute a software program stored in the memory to implement the second aspect or the second aspect. The method described in any one of the implementation modes.
  • the present application provides a chip that is connected to a memory, or the chip includes a memory, and is used to read and execute a software program stored in the memory to implement the third aspect or the first aspect.
  • the present application provides a chip that is connected to a memory, or the chip includes a memory, and is configured to read and execute a software program stored in the memory to implement the fourth aspect or the first aspect.
  • this application provides a terminal device, including a transceiver, a processor, and a memory, configured to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
  • the present application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the second aspect or any implementation manner of the second aspect.
  • the present application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the third aspect or any one of the implementation manners of the third aspect.
  • this application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the fourth aspect or any one of the implementation manners of the fourth aspect.
  • this application provides a computer-readable storage medium, including instructions, which when run on a terminal device, cause the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
  • this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
  • this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the third aspect or any one of the implementation manners of the third aspect.
  • this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the fourth aspect or any one of the implementation manners of the fourth aspect.
  • this application provides a computer program product, which when running on a terminal device, causes the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
  • the present application provides a computer program product, which when running on a network device, causes the network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
  • this application provides a computer program product, which when running on a network device, causes the network device to execute the method described in the third aspect or any one of the implementation manners of the third aspect.
  • this application provides a computer program product, which when running on a network device, causes the network device to execute the method described in the fourth aspect or any one of the implementation manners of the fourth aspect.
  • Fig. 1 is an architecture diagram of a system that can apply the technical solutions of the embodiments of the present application.
  • Fig. 2 is a schematic flow chart of random access in the prior art.
  • FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • Fig. 4 is a schematic flowchart of a terminal device randomly accessing a first network device.
  • Fig. 5 is a schematic flowchart of the terminal device switching from the second network device to the first network device.
  • Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present application.
  • Fig. 9 is a schematic structural diagram of a network device according to another embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal device provided by another embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a network device provided by another embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a network device provided by another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a network device provided by another embodiment of the present application. detailed description
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, as long as there is an entity in the communication system that needs to send transmission direction indication information, another entity needs to receive the indication information, and determine the transmission direction within a certain period of time according to the indication information .
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • general packet radio service general packet radio service, GPRS
  • long term evolution long term evolution
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • WiMAX worldwide interoperability for microwave access
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the terminal device can also be a bee phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA) with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of public land mobile network (PLMN) Terminal equipment, etc., embodiments of the application This is not limited.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (base transceiver station, BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evolved base station) in the LTE system.
  • NodeB eNB or eNodeB
  • it can also be a wireless controller in a cloud radio access network (CRAN) scenario
  • the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and the future
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU) and memory (also known as main memory) >
  • the operating system can be any one or more of the processes (process) A computer operating system that implements business processing, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system.
  • the application layer includes applications such as browser, address book, word processing software, instant messaging software, etc.
  • the embodiments of the present application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the present application, as long as the program that records the code of the method provided in the embodiments of the present application can be provided according to the embodiments of the present application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CDs), digital versatile discs (DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • FIG. 1 is an architecture diagram of a system that can apply the technical solutions of the embodiments of the present application. It should be understood that FIG. 1 is only exemplary, and the technical solutions of the embodiments of the present application may also be applied to other communication systems.
  • a core network device As shown in FIG. 1, at least one of a core network device, a base station, a satellite station, and multiple terminal devices constitutes a communication system.
  • the terminal equipment 1 to the terminal equipment 6 may send uplink data to the base station, and the base station needs to receive the uplink data sent by the terminal equipment 1 to the terminal equipment 6.
  • the base station may send downlink data to terminal equipment 1 to terminal equipment 6, and terminal equipment 1 to terminal equipment 6 need to receive downlink data from the base station.
  • the terminal device 4 to the terminal device 6 may also form a communication system.
  • the base station can send downlink data to the terminal device 1, the terminal device 2, the terminal device 5, etc.; the terminal device 5 can also send downlink data to the terminal device 4, Terminal equipment 6.
  • the terminal device 7 ⁇ terminal device 9 can send uplink data to the satellite station, and the satellite station needs to receive the uplink data sent by the terminal device 7 ⁇ terminal device 9. Similarly, the satellite station can send downlink data to the terminal equipment 7-9, and the terminal equipment 7-9 needs to receive the downlink data from the satellite station.
  • the base station and the satellite station are connected to the core network equipment in different ways, and the base station and the core network equipment, and the satellite station and the core network equipment can send mutual data. Among them, the satellite station and the core network equipment send mutual data through the stargazing station.
  • a satellite station can be a load carried by an airborne platform that has all or part of the functions of a base station.
  • An airborne platform can be an aerial platform with a definite orbit, for example, a satellite, a drone, a hot air balloon, an airplane, etc.; it can also be a definite orbit For example, buses, ships, etc. whose trajectories are determined are not limited in the embodiment of the present application.
  • the stargazing station may have a non-terrestrial network (non terrestrial networks, NTN) gateway function.
  • NTN gateway is a transport network layer (transport network layer, TNL) node, used to realize the transparent transmission of data or signaling, NTN gateway can also be replaced with a fixed location receiving node or donor node.
  • TNL transport network layer
  • system architecture shown in FIG. 1 may include multiple satellite stations or multiple base stations, and the satellite stations may also serve terminal devices similar to terminal devices 1 to 6.
  • the terminal equipment 1 to terminal equipment 9 shown in FIG. 1 can access network equipment (for example, the base station, satellite station, etc. in FIG. 1) through random access.
  • network equipment for example, the base station, satellite station, etc. in FIG. 1
  • Fig. 2 is a schematic flow chart of random access in the prior art. As shown in Figure 2, the random access process may include steps 210-240.
  • the terminal device selects a random access code from the random access code (preamble) resource notified by the network device, and sends it to the network device (ie Msgl).
  • the terminal device uses a random access radio network temporary identifier (RA-RNTI) related to the random access code selected in 210 to receive a random access response within a specific time window (random access response, RAR) (i.e. Msg2)
  • RAR random access response
  • the RAR may carry the timing advance (TA) value, the time-frequency resource for sending Msg3, and the temporary cell radio network temporary identifier (TC-RNTI).
  • TA timing advance
  • TC-RNTI temporary cell radio network temporary identifier
  • the TA value is generally used for uplink transmission of terminal equipment. Specifically, in order to make the time packet for the uplink data of the terminal device to reach the base station within a desired time, the radio frequency transmission delay due to the distance is estimated, so that the terminal device sends the uplink data in advance correspondingly.
  • the network device can measure the TA value of the terminal device by receiving the receiving time of the random access code sent by the terminal device.
  • the terminal device sends Msg3 on the time-frequency resource indicated by the RAR. If the terminal device is in the connected state, Msg3 can include the cell radio network temporary identifier (C-RNTI) of the terminal device.
  • C-RNTI cell radio network temporary identifier
  • the terminal device receives the Msg4 sent by the network device.
  • the terminal device in the connected state uses C-RNTI to receive Msg4, if it successfully receives Msg4, it is considered that the terminal device has succeeded in random access;
  • the terminal device in the idle state/inactive state uses TC-RNTI to receive Msg4, and detects Msg4 If the conflict resolution block in, if it passes the detection, it is considered that the random access of the terminal device is successful, and the TC-RNTI is used as the C-RNTI.
  • each terminal device In the random access scheme shown in FIG. 2, four signaling interactions are required between the terminal device and the network device. Due to the signaling interaction between each terminal device and network device, a certain transmission time is required (for example, in a satellite network, Especially in the synchronous satellite network, each signal requires 500 milliseconds (ms) transmission time), so in the random access scheme in Figure 2, the speed of the terminal equipment accessing the network will be relatively slow.
  • ms milliseconds
  • the communication method provided in the embodiments of the present application can reduce the number of signal interactions between the terminal device and the network device in the random access process, thereby improving the speed of the terminal device accessing the network.
  • FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • the first network device in Fig. 3 may correspond to the above network device.
  • the method shown in FIG. 3 may include at least part of the following content.
  • the terminal device determines or calculates the TA value with the first network device.
  • the terminal device in the embodiment of the present application may be an entity on the user side for receiving or transmitting signals, for example, a mobile phone, user equipment (user equipment, UE), and so on.
  • the network device in the embodiment of the present application may be an entity on the network side for transmitting or receiving signals, for example, the base station, satellite station, etc. shown in FIG. 1.
  • the first network device is a network device to be accessed by the terminal device.
  • the TA value with the first network device is the TA value between the terminal device and the first network device. That is, in order to make the uplink data of the terminal device reach the first network device at a desired time, the terminal device sends the time value of the uplink data in advance.
  • the terminal device determine or calculate the TA value with the first network device.
  • the terminal device may determine the TA value with the first network device according to the first power.
  • the first power is the received power of the downlink signal from the first network device.
  • the received power of the downlink signal may be the power of the downlink signal when the terminal device receives the downlink signal.
  • the terminal device may obtain the space loss of the downlink signal according to the received power and the transmit power of the downlink signal, and further obtain the TA value with the first network device according to the space loss of the downlink signal.
  • P_r P_t-PL (f, d, other parameters)
  • P_r P_t-PL (f, d, other parameters)
  • the downlink signal may be a downlink synchronization reference signal sent by the first network device or any other downlink signal, as long as the terminal device can obtain the transmission power and the reception power of the downlink signal.
  • the terminal device determining the TA value with the first network device according to the received power of the downlink signal may also be another specific implementation manner, which is not specifically limited in the embodiment of the present application.
  • the terminal device can determine the first distance.
  • the terminal device can be determined by the location of the terminal device and the location of the first network device.
  • the terminal device can be determined by the transmit power and received power of the downlink signal. The examples are not specifically limited.
  • determining the location of the terminal device which is not specifically limited in the embodiment of the present application. For example, it is determined by methods such as the global positioning system and base station positioning.
  • the first network device may be a satellite station. Since the link directly connecting the terminal device and the satellite station is a visible path, the terminal device can determine it according to its own location and the constellation diagram of the first network device. Terminal equipment and the first network The distance between network devices. The terminal device may obtain the constellation diagram of the first network device through a broadcast message or radio resource control (radio resource control, RRC) dedicated signaling from the first network device.
  • RRC radio resource control
  • the constellation diagram records the location information of the satellite at a certain moment.
  • the constellation diagram may also have other expressions, for example, a constellation table, an ephemeris table, etc., based on the location information of the recorded satellite.
  • the constellation diagram is used in this application.
  • the terminal device may determine the TA value with the first network device according to the first power and the first distance. For example, the terminal device may determine one TA value according to the first power, determine another TA value according to the first distance, and further obtain the TA value between the terminal device and the first network device according to the two TA values.
  • the terminal device may also determine or calculate the TA value with the first network device in other ways, which is not limited in the embodiment of the present application.
  • the terminal device may further receive a second indication message, where the second indication information is used to instruct the terminal device to determine or calculate the TA value with the first network device. That is to say, the terminal device will determine the TA value with the first network device by itself only after receiving the second indication information from the network side.
  • the second indication information may be carried in the new configuration signaling, or may reuse existing signaling.
  • the second indication information may instruct the terminal device to determine or calculate the TA value with the first network device in an explicit, implicit or non-indicating manner. Taking, for example, that the terminal device determines the TA value with the first network device according to the constellation diagram of the first network device and the location of the terminal device, it may be that the first indication information received by the terminal device includes a specific field, character or identification bit Etc., clearly instruct the terminal device to determine or calculate the TA value with the first network device; it can also be that the terminal device receives the constellation diagram of the first network device, and the terminal device determines the TA value with the first network device by itself ; It may also be that the first terminal device determines the TA value with the first network device by default.
  • the second indication information may come from the first network device; when the terminal device is from the second network device In the case of switching to the first network device, the first network device is the target network device, the second network device is the source network device, and the second indication information may come from the second network device.
  • the terminal device sends a first message to the first network device on the first resource according to the TA value.
  • the first message may be message 3 (Msg3) or other messages in the random access process. That is to say, the technical solution of the embodiment of the present application can be applied not only in the random access process, but also in the scenario where any terminal device sends uplink data to the network device.
  • the embodiment of the present application uses Msg3 as an example to describe the technical solution of the embodiment of the present application.
  • the terminal device sends Msg3 to the first network device according to the TA value, which can be understood as the terminal device sends Msg3 to the first network device in advance of the TA value.
  • Msg3 is transmitted on the uplink shared channel, and contains a C-RNTI media access control layer control element (media access controls control element, MAC CE) or common control channel (common control channel, CCCH) service data unit (service data) unit, SDU ).
  • the SDU of the CCCH may include one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reestablishment request message.
  • the first message may also carry an RRC reconfiguration complete message. That is to say, Msg3 can be used to transmit at least one of the RRC connection establishment request message, the RRC connection recovery request message, the RRC connection reestablishment request message, and the RRC reconfiguration complete message.
  • the terminal device when the terminal device is in the connected state, the terminal device already has a C-RNTI, so the terminal device in the connected state may include the C-RNTI in the Msg3, so that the first network device uses the C-RNTI to scramble the Msg4 .
  • the terminal device may also report the TA value between the terminal device and the first network device to the first network device through Msg3, so that the first network device can adjust the TA.
  • the TA value between the terminal device and the first network device may also be reported to the first network device through other subsequent messages.
  • the first resource used for transmitting Msg3 may include at least one of time domain resources, frequency domain resources, code domain resources, and space resources used for transmitting Msg3.
  • the terminal device before executing 320, the terminal device further includes receiving first indication information, where the first indication information is used to indicate the first resource.
  • the terminal device may obtain the first indication information through broadcast information or RRC dedicated signaling.
  • the first indication information may come from the first network device; when the terminal device is from the second network device In the case of switching to the first network device, the first network device is the target network device and the second network device is the source network device at this time, and the first indication information may come from the second network device.
  • the terminal equipment For the terminal equipment in the idle state/inactive state, the terminal equipment does not yet have a C-RNTI, so the terminal equipment needs a temporary radio network temporary identifier (RNTI) for the signaling in the random access process transmission. Therefore, the first indication information may also be used to indicate the first wireless network temporary identifier RNTI.
  • RNTI radio network temporary identifier
  • the first RNTI is associated with the first resource, and when the terminal device uses a certain resource to transmit Msg3, the terminal device will use the RNTI corresponding to the resource.
  • one resource corresponds to one first RNTI.
  • PCI physical cell identifier
  • PUSCH physical uplink shared channel
  • the terminal device receives a second message in response to the first message.
  • the C-RNTI can be used to receive the second message from the first network device in response to the first message; or, for the terminal device in the idle state/inactive state, the first RNTI can be used to receive the second message from the first network device.
  • a network device receives a second message in response to the first message.
  • the corresponding second message may include at least one of an RRC connection establishment message, an RRC connection restoration message, an RRC connection reestablishment message, and an RRC reconfiguration complete response message.
  • the second message may include an RRC connection establishment message; when Msg3 includes an RRC connection recovery message request, the second message may include an RRC connection recovery message, etc.
  • the second message may also include a conflict resolution message.
  • the terminal device For the terminal device in the connected state, when the terminal device receives the second message, it can be considered that the random access is successful; while for the terminal device in the idle state/inactive state, the terminal device also needs to detect the conflict resolution in the conflict resolution message Block, the terminal device can be considered as successful random access only when it passes the detection.
  • the terminal device For the terminal device in the connected state, the terminal device uses the C-RNTI to receive the second message; for the terminal device in the idle state/inactive state, the terminal device uses the first RNTI to receive the second message, and the second message may also carry A second RNTI allocated by the first network device to the terminal device, and the second RNTI is an RNTI used for subsequent communication between the terminal device and the first network device.
  • Fig. 4 is a schematic flowchart of a terminal device randomly accessing a first network device. Take the first message as Msg3 and the second message as Msg4 as an example.
  • the first network device sends a broadcast message to the terminal device, and the broadcast message includes the first indication information and the second indication information.
  • the first indication information and the second indication information can be carried in the same broadcast message or in two broadcast messages.
  • the second indication information includes the constellation diagram of the first network device (it implies that the terminal device uses the constellation diagram to determine the TA value with the first network device) or indicates that the terminal device can estimate the TA based on the transmit power and received power of the downlink signal .
  • the first indication information indicates the resource (for example, time/frequency position) for transmitting Msg3 and the RNTI associated with each Msg3 resource.
  • the terminal device determines or calculates the TA value with the first network device. For a specific implementation method, refer to the related description of 310. If the terminal device can determine or calculate the TA value with the first network device by itself, the terminal device determines or calculates the TA value with the first network device, and executes 430; if the terminal device cannot determine or calculate the TA value with the first network device by itself, A TA value between network devices, the terminal device uses the access process shown in FIG. 2 to access the first network device.
  • the terminal device uses the determined or calculated TA value to send Msg3 to the first network device.
  • Msg3 can include the TA value; if the terminal device is in the connected state, Msg3 can also carry the terminal device’s
  • the terminal device in the idle state/inactive state uses the RNTI associated with the resource for transmitting Msg3, detects Msg4, and makes a conflict resolution decision. If the decision is passed, the random access of the terminal device is successful, and Msg4 carries The second RNTI allocated to the terminal device for the first network device; the terminal device in the connected state uses the C-RNTI to detect Msg4, and if Msg4 is detected, it means that the random access of the terminal device is successful.
  • Fig. 5 is a schematic flowchart of the terminal device switching from the second network device to the first network device.
  • a cellular network in order to ensure the continuity of services of the terminal equipment in the connected state, when the terminal equipment moves to the edge of the cell, the handover of the network equipment is triggered.
  • the terminal device switches from the second network device to the first network device, and the terminal device initiates a random access process to the first network device.
  • the first network device since the first network device has not yet established a connection with the terminal device, the first network device needs to obtain some terminal device information from the second network device, for example, whether the terminal device can determine or calculate the connection with the first network device TA value between devices, etc.
  • the second network device sends a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance with the first network device.
  • TA value the third indication information
  • the second network device may execute 501 to receive a fourth message sent by the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the connection with the network device.
  • the second network device can perform 501 and 502, the second network device sends a third message to the terminal device, the third message is used to request the terminal device to feedback whether it can determine or calculate the TA value with the network device.
  • the second network device receives a fourth message sent by the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
  • the third message may be carried in the location information request, and the fourth message may be carried in the location information report.
  • the second network device may also execute 503, and the second network device makes a handover decision.
  • the second network device executes 504.
  • the first network device receives the handover request in step 504, and according to the third indication information carried in the handover request in 504, determines that the terminal device can determine or calculate the TA value with the first network device.
  • the first network device carries the fourth indication information in the response message corresponding to the handover request in 504, and the fourth indication information It is used to indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device.
  • the response message further includes the first resource and the first RNTI, where the first resource includes a resource for transmitting Msg3.
  • the first resource includes a resource for transmitting Msg3.
  • the terminal device accesses the first network device according to the access procedure shown in FIG. 2, and the first network device corresponds to the handover request in 504
  • the response message of carries the resource used to transmit Msg 1.
  • the second network device sends a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
  • the handover command may also include the first indication information or the resource for transmitting Msgl.
  • the handover command may further include second indication information.
  • the second indication information can refer to the above description.
  • the terminal device determines or calculates the TA value with the first network device. For a specific implementation method, refer to the related description of 310. If the terminal device can determine or calculate the TA value with the first network device by itself, the terminal device determines or calculates the TA value with the first network device, and executes 509; if the terminal device cannot determine or calculate the TA value with the first network device by itself, A TA value between network devices, the terminal device uses the access process shown in FIG. 2 to access the first network device.
  • the terminal device uses the determined or calculated TA value to send Msg3 to the first network device.
  • Msg3 can include the TA value; if the terminal device is in the connected state, Msg3 can also carry the terminal device’s
  • the terminal device in the idle state/inactive state uses the RNTI associated with the resource for transmitting Msg3, detects Msg4, and makes a conflict resolution decision. If the decision is passed, the random access of the terminal device is successful, and Msg4 carries The second RNTI allocated to the terminal device for the first network device; the terminal device in the connected state uses the C-RNTI to detect Msg4, and if Msg4 is detected, it means that the random access of the terminal device is successful.
  • the network device determines the TA value of the terminal device according to the receiving time of the random access code sent by the terminal device, and then sends it to the terminal device. In this way, the terminal device needs two signaling interactions to learn the TA value. value.
  • the terminal device determines the TA value according to the distance between its own location and the location of the network device, so that it can save the terminal device from acquiring the TA value in the random access process in the prior art. The two signaling interactions are performed, thereby increasing the speed of terminal equipment accessing the network.
  • Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 600 shown in FIG. 6 may correspond to the above terminal device.
  • the terminal device 600 includes a sending module 620 and a processing module 630.
  • the processing module 630 is configured to determine the timing advance TA value with the first network device according to the first power and/or the first distance.
  • the sending module 620 is configured to send a first message to the first network device on the first resource according to the TA value.
  • the first power is the received power of the downlink signal from the first network device
  • the first distance is the terminal The distance between the end device and the first network device.
  • the first message includes a radio resource control RRC connection establishment request message, an RRC connection restoration request message, an RRC connection reestablishment request message, an RRC reconfiguration complete message, and the cell radio network temporary identifier C-RNTI of the terminal device. at least one.
  • the sending module 620 is further configured to: send the TA value to the first network device.
  • the first distance is determined at least according to the location of the terminal device; or the first distance is determined at least according to the first power.
  • the terminal device 600 further includes a receiving module 610, configured to receive first indication information, where the first indication information is used to indicate the first resource and the first wireless network temporary identifier RNTI, the first resource and the second A RNTI has a corresponding relationship.
  • a receiving module 610 configured to receive first indication information, where the first indication information is used to indicate the first resource and the first wireless network temporary identifier RNTI, the first resource and the second A RNTI has a corresponding relationship.
  • the receiving module 610 is further configured to: use the C-RNTI or the first RNTI to receive a second message in response to the first message from the first network device.
  • the first indication information comes from the first network device; or the first indication information comes from a second network device, and the second network device is different from the first network device.
  • the receiving module 610 and the sending module 620 may be implemented by a transceiver.
  • the processing module 630 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 610, the sending module 620, and the processing module 630 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
  • Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device 700 shown in FIG. 7 may correspond to the above second network device.
  • the terminal device 700 includes a sending module 720.
  • the sending module 720 is configured to send a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA value with the first network device .
  • the sending module 720 is further configured to send a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
  • the network device 700 further includes a receiving module 710, configured to receive a response message corresponding to the handover request from the first network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate The terminal device determines or calculates the TA value between the terminal device and the first network device.
  • a receiving module 710 configured to receive a response message corresponding to the handover request from the first network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate The terminal device determines or calculates the TA value between the terminal device and the first network device.
  • the response message further includes the first resource and the first radio network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
  • the handover command includes first indication information, where the first indication information is used to indicate the first resource and the first RNTI, and the first resource and the first RNTI have a corresponding relationship.
  • the sending module 720 is further configured to send a third message to the terminal device, where the third message is used to request the terminal device to feed back whether the TA value with the network device can be determined or calculated; and/or the The receiving module 710 is further configured to receive a fourth message from the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
  • the receiving module 710 and the sending module 720 may be implemented by a transceiver.
  • the specific functions and beneficial effects of the receiving module 710 and the sending module 720 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
  • FIG. 8 is a schematic structural diagram of a network device according to another embodiment of the present application.
  • the network device 800 shown in FIG. 8 may correspond to the first network device described above.
  • the terminal device 800 includes a sending module 820 and a processing module 830.
  • the receiving module 810 is configured to receive a handover request from a second network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA value with the first network device .
  • the processing module 830 is configured to determine whether the terminal device can determine the TA value with the first network device according to the third indication information.
  • the network device 800 further includes a sending module 820, configured to send a response message corresponding to the handover request to the second network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate
  • the terminal device determines or calculates the TA value between the terminal device and the first network device.
  • the response message further includes the first resource and the first radio network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
  • the receiving module 810 is further configured to receive the TA value from the terminal device.
  • the receiving module 810 and the sending module 820 may be implemented by a transceiver.
  • the processing module 830 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 810, the sending module 820, and the processing module 830 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
  • Fig. 9 is a schematic structural diagram of a network device according to another embodiment of the present application.
  • the terminal device 900 shown in FIG. 9 may correspond to the first network device described above.
  • the terminal device 900 includes a receiving module 910 and a sending module 920.
  • the sending module 920 is configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA value;
  • the receiving module 910 is configured to receive the TA value from the terminal device.
  • the sending module 920 is further configured to: send first indication information to the terminal device, where the first indication information is used to indicate the first resource and the first RNTI, and the first resource has a corresponding relationship with the first RNTI .
  • the first indication information is carried in a broadcast message.
  • the receiving module 910 and the sending module 920 may be implemented by a transceiver.
  • the specific functions and beneficial effects of the receiving module 910 and the sending module 920 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
  • FIG. 10 is a schematic structural diagram of a terminal device provided by another embodiment of the present application.
  • the terminal device 1000 may include a transceiver 1010, a processor 1020, and a memory 1030.
  • FIG. 10 Only one memory and processor are shown in Figure 10. In actual terminal equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
  • the transceiver 1010, the processor 1020, and the memory 1030 communicate with each other through internal connection paths, and transfer control and/or data signals.
  • the transceiver 1010 is configured to determine the TA value of the timing advance with the first network device according to the first power and/or the first distance; and is configured to report the TA value to the first network device on the first resource according to the TA value.
  • FIG. 11 is a schematic structural diagram of a network device provided by another embodiment of the present application.
  • the terminal device 1100 shown in FIG. 11 may correspond to the above second network device.
  • the network device 1100 may include a transceiver 1110, A processor 1120 and a memory 1130.
  • FIG. 11 Only one memory and processor are shown in Figure 11. In actual network equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
  • the transceiver 1110, the processor 1120, and the memory 1130 communicate with each other through internal connection paths, and transfer control and/or data signals.
  • the transceiver 1110 is configured to send a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing with the first network device.
  • Advance TA value used to send a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
  • FIG. 12 is a schematic structural diagram of a network device provided by another embodiment of the present application.
  • the terminal device 1200 shown in FIG. 12 may correspond to the first network device described above.
  • the network device 1200 may include a transceiver 1210, a processor 1220, and a memory 1230.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
  • the transceiver 1210, the processor 1220, and the memory 1230 communicate with each other through internal connection paths, and transfer control and/or data signals.
  • the transceiver 1210 is configured to receive a handover request from the second network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing with the first network device. Advance TA value.
  • the processor 1220 is configured to determine, according to the third indication information, whether the terminal device can determine the TA value with the first network device.
  • FIG. 13 is a schematic structural diagram of a network device provided by another embodiment of the present application.
  • the terminal device 1300 shown in FIG. 13 may correspond to the first network device described above.
  • the network device 1300 may include a transceiver 1310, a processor 1320, and a memory 1330.
  • FIG. 13 Only one memory and processor are shown in Figure 13. In actual network equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
  • the transceiver 1310, the processor 1320, and the memory 1330 communicate with each other through internal connection paths, and transfer control and/or data signals.
  • the transceiver 1310 is configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA value; and to receive the TA value from the terminal device.
  • the transceiver in each embodiment of the present application may also be referred to as a transceiver unit, transceiver, transceiver, and so on.
  • the processor may also be called a processing unit, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver as the sending unit, that is, the transceiver includes the receiving unit and the sending unit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • the memory described in each embodiment of the present application is used to store computer instructions and parameters required for the operation of the processor.
  • the processor described in each embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the processor described in each embodiment of the present application may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC) ready-made programmable gate array (field programmable gate array, FPGA). ) Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory (RAM) flash memory, read-only memory (read-only memory, ROM) programmable read-only memory, or electrically erasable programmable memory, registers, and other mature storage media in the field in.
  • RAM random access memory
  • ROM read-only memory
  • ROM read-only memory
  • the storage medium is located in the memory, and the processor reads the instructions in the memory and completes the steps of the above method in combination with its hardware.
  • the second is only used to distinguish different individuals in the same category of nouns, and should not be construed as a limitation on the nouns, for example, "the first cell” and “the first” “Second cell” refers to two or two different types of cells, and there are no other restrictions other than that.
  • the parts with special instructions for "first” and “second” do not apply to the above interpretation.
  • the size of the sequence number of each process does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiments of this application. Any restrictions.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, 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.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection of devices or units through some interfaces, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including If a thousand instructions are used to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk, etc., which can store program code medium.

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Abstract

The present application provides a communication method, a terminal device, and a network device. In a technical solution of the present application, a terminal device itself determines or calculates a TA value with respect to a network device, so as to omit the two signaling interactions required in the prior art for terminal devices to acquire TA values in random access processes, thereby improving the speed at which terminal devices access networks.

Description

通信方法、 终端设备和网络设备 Communication method, terminal equipment and network equipment
本申请要求于 2019年 02月 25 日提交中国专利局、 申请号为 201910139150.3、 申请 名称为 “通信方法、 终端设备和网络设备” 的中国专利申请的优先权， 其全部内容通过引 用结合在本申请中。 技术领域 This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on February 25, 2019, the application number is 201910139150.3, and the application name is "communication methods, terminal equipment and network equipment", the entire content of which is incorporated into this application by reference in. Technical field
本申请涉及通信领域， 并且更具体地涉及通信方法、 终端设备和网络设备。 背景技术 This application relates to the field of communications, and more specifically to communication methods, terminal devices, and network devices. Background technique
随机接入为蜂窝网络中重要的过程。 现有的随机接入方案中， 终端设备与网络设备之 间需要 4条信令交互，即终端设备向网络设备发送的随机接入码（ preamble）（也称 Msgl）、 网络设备向终端设备发送的随机接入响应（ random access response, RAR） （也称 Msg2）、 终端设备向网络设备发送的 Msg3、 网络设备向终端设备发送的 Msg4 , 其中 Msg4包括冲 突解决消息和响应于 Msg3的消息。 对于处于空闲态 /非激活态的终端设备， 在终端设备接 收到 Msg4并通过冲突解决判决时， 则认为终端设备的随机接入成功； 对于处于连接态的 终端设备， 在终端设备成功接收到 Msg4 , 就认为终端设备的随机接入成功。 Random access is an important process in cellular networks. In the existing random access scheme, four signaling interactions are required between the terminal equipment and the network equipment, that is, the random access code (preamble) (also called Msgl) sent by the terminal equipment to the network equipment, and the network equipment sent to the terminal equipment Random access response (RAR) (also known as Msg2), Msg3 sent by the terminal device to the network device, and Msg4 sent by the network device to the terminal device, where Msg4 includes a conflict resolution message and a message in response to Msg3. For the terminal device in the idle state/inactive state, when the terminal device receives the Msg4 and passes the conflict resolution decision, it is considered that the random access of the terminal device is successful; for the terminal device in the connected state, the terminal device successfully receives the Msg4 , It is considered that the random access of the terminal device is successful.
由于每一条终端设备和网络设备之间的信令交互， 需要一定的传输时间 （例如， 在卫 星网络中， 特别是同步卫星网络中， 每条信令需要 500毫秒（ms） 的传输时间） ， 因此现 有的随机接入方案中终端设备接入网络的速度会比较慢。 发明内容 Due to the signaling interaction between each terminal device and network device, a certain transmission time is required (for example, in a satellite network, especially a synchronous satellite network, each signaling requires 500 milliseconds (ms) transmission time), Therefore, in the existing random access scheme, the speed at which the terminal device accesses the network is relatively slow. Summary of the invention
本申请提供通信方法、 终端设备和网络设备， 可以减少随机接入过程中终端设备与网 络设备之间信令交互， 从而能够提高终端设备接入网络的速度。 The present application provides a communication method, terminal equipment, and network equipment, which can reduce signaling interaction between the terminal equipment and the network equipment in the random access process, thereby improving the speed of the terminal equipment accessing the network.
第一方面， 本申请提供了一种通信方法， 该方法包括： 终端设备根据第一功率和 /或 第一距离确定与第一网络设备之间的定时提前 TA值； 该终端设备根据该 TA值， 在第一 资源上向该第一网络设备发送第一消息； 其中， 该第一功率为来自该第一网络设备的下行 信号的接收功率， 该第一距离为该终端设备与该第一网络设备之间的距离。 In a first aspect, this application provides a communication method, the method includes: a terminal device determines a timing advance TA value with a first network device according to a first power and/or a first distance; the terminal device determines a TA value according to the TA value Send a first message to the first network device on the first resource; where the first power is the received power of the downlink signal from the first network device, and the first distance is the terminal device and the first network The distance between devices.
可选地， 下行信号可以为下行同步参考信号。 换句话说， 下行信号可以为同步信号块 （ synchronization signal and physical broadcast channel block, SSB） 。 Optionally, the downlink signal may be a downlink synchronization reference signal. In other words, the downlink signal may be a synchronization signal and physical broadcast channel block (SSB).
现有技术的随机接入过程中， 由网络设备根据终端设备发送的随机接入码的发送时间 和接收时间确定终端设备的 TA值， 再发送给终端设备， 这样需要两次信令交互终端设备 才能获知 TA值。 而在本申请实施例的技术方案中， 由终端设备根据自己确定或计算与网 络设备之间的 TA值， 这样就可以省去现有技术的随机接入过程中终端设备获取 TA值的 两次信令交互， 从而提高终端设备接入网络的速度。 In the random access process in the prior art, the network device determines the TA value of the terminal device according to the sending time and the receiving time of the random access code sent by the terminal device, and then sends it to the terminal device. This requires two signaling interactions with the terminal device. In order to know the TA value. In the technical solution of the embodiment of the present application, the terminal device determines or calculates the TA value with the network device according to itself, so that it can save the need for the terminal device to obtain the TA value twice in the random access process in the prior art. Signaling interaction, thereby increasing the speed of terminal equipment accessing the network.
在一种可能的实现方式中， 该第一消息包括无线资源控制 RRC连接建立请求消息、 RRC连接恢复请求消息、 RRC连接重建请求消息、 RRC重配完成消息、 该终端设备的小 区无线网络临时标识 C-RNTI中的至少一个。 In a possible implementation manner, the first message includes a radio resource control RRC connection establishment request message, At least one of the RRC connection recovery request message, the RRC connection reestablishment request message, the RRC reconfiguration complete message, and the cell radio network temporary identifier C-RNTI of the terminal device.
可选地， 第一消息为 Msg3。 Optionally, the first message is Msg3.
在一种可能的实现方式中， 该方法还包括： 该终端设备向该第一网络设备发送该 TA 值。 In a possible implementation manner, the method further includes: the terminal device sends the TA value to the first network device.
可选地， 该 TA值承载于第一消息中。 Optionally, the TA value is carried in the first message.
可以理解地， 该 TA也可以承载于其他消息中。 Understandably, the TA may also be carried in other messages.
由于终端设备可能会发生位置改变， 所以终端设备与第一网络设备之间的 TA值也应 随之改变。 考虑到上述问题， 在上述技术方案中， 终端设备将确定或计算得到的 TA值发 送给第一网络设备， 便于第一网络设备在终端设备发生位置改变的情况下对 TA值进行调 整。 Since the location of the terminal device may change, the TA value between the terminal device and the first network device should also change accordingly. In consideration of the foregoing problems, in the foregoing technical solution, the terminal device sends the determined or calculated TA value to the first network device, so that the first network device can adjust the TA value when the location of the terminal device changes.
在一种可能的实现方式中， 该第一距离是至少根据该终端设备的位置确定的； 或者该 第一距离是至少根据该第一功率确定的。 In a possible implementation manner, the first distance is determined at least according to the location of the terminal device; or the first distance is determined at least according to the first power.
在上述技术方案中，终端设备与第一网络设备之间的距离可以是由终端设备或者下行 信号的接收功率确定的。这样对于不具备定位能力的终端设备可以通过下行信号的接受确 定终端设备之间的距离， 而对于具备定位能力的终端设备可以通过定位得到的自身位置来 确定与第一网络设备之间的距离。 In the above technical solution, the distance between the terminal device and the first network device may be determined by the received power of the terminal device or the downlink signal. In this way, for terminal devices without positioning capability, the distance between the terminal devices can be determined by receiving the downlink signal, and for terminal devices with positioning capability, the distance from the first network device can be determined by positioning itself.
在一种可能的实现方式中， 该方法还包括： 该终端设备接收第一指示信息， 该第一指 示信息用于指示该第一资源以及第一无线网络临时标识 RNTI,该第一资源与该第一 RNTI 存在对应关系。 In a possible implementation manner, the method further includes: the terminal device receives first indication information, where the first indication information is used to indicate the first resource and the first wireless network temporary identifier RNTI, and the first resource and the There is a corresponding relationship for the first RNTI.
可选地， 第一资源包括时域资源、 频域资源、 码域资源、 空域资源中的一个或多个。 在上述技术方案中， 终端设备通过第一指示信息获取第一资源和第一 RNTI, 这样终 端设备无需发送 Msgl和接收 Msg2就可以可获得第一资源和第一 RNTI, 也即是说， 可以 省去现有技术的随机接入过程中前两次信令交互， 从而提高终端设备接入网络的速度。 Optionally, the first resource includes one or more of time domain resources, frequency domain resources, code domain resources, and space domain resources. In the above technical solution, the terminal device obtains the first resource and the first RNTI through the first indication information, so that the terminal device can obtain the first resource and the first RNTI without sending Msg1 and receiving Msg2, that is, it can save The first two signaling interactions in the random access process in the prior art are eliminated, thereby increasing the speed of the terminal device accessing the network.
此外， 第一资源与第一 RNTI存在对应关系， 也就是说， 终端设备确定了发送第一消 息的资源就确定了第一 RNTI, 这样第一网络设备发送第二消息和终端设备接收第二消息 所使用的 RNTI是一致的， 从而使得第二消息能够正确传输。 In addition, there is a corresponding relationship between the first resource and the first RNTI, that is, the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message The RNTI used is consistent, so that the second message can be transmitted correctly.
在一种可能的实现方式中，该方法还包括：该终端设备使用该 C-RNTI或该第一 RNTI 从该第一网络设备接收响应于该第一消息的第二消息。 In a possible implementation manner, the method further includes: the terminal device uses the C-RNTI or the first RNTI to receive a second message in response to the first message from the first network device.
在一种可能的实现方式中， 该第一指示信息来自该第一网络设备； 或者该第一指示信 息来自第二网络设备， 该第二网络设备与该第一网络设备不同。 In a possible implementation manner, the first indication information comes from the first network device; or the first indication information comes from a second network device, and the second network device is different from the first network device.
可以理解地， 在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连 接状态进行 TA值调整的情况下， 第一指示信息可以来自于第一网络设备； 在终端设备从 第二网络设备切换至第一网络设备的情况下， 此时第一网络设备为目标网络设备， 第二网 络设备为源网络设备， 第一指示信息可以来自于第二网络设备。 因此， 可知上述技术方案 既可以应用于在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连接状 态进行 TA值调整的情况下， 也可以应用于在终端设备从第二网络设备切换至第一网络设 备的情况下。 Understandably, when the terminal device is in the connected state from the idle state/inactive state to the connected state, or when the terminal device is in the connected state to adjust the TA value, the first indication information may come from the first network device; In a case where the second network device is switched to the first network device, the first network device is the target network device, the second network device is the source network device, and the first indication information may come from the second network device. Therefore, it can be seen that the above technical solution can be applied to the case where the terminal device is in the connected state from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, and can also be applied to the terminal device from the second When the network device is switched to the first network device.
在一种可能的实现方式中， 该方法还包括： 该终端设备接收第二指示信息， 该第二指 示信息用于指示该终端设备确定或者计算该定时提前 TA值。 In a possible implementation manner, the method further includes: the terminal device receives second indication information, the second instruction The display information is used to instruct the terminal device to determine or calculate the timing advance TA value.
在上述技术方案中， 由第一网络设备指示终端设备确定或计算与第一网络设备之间的 TA值， 这样终端设备可知第一网络设备同样支持两步随机接入过程， 进而再确定或计算 TA值， 能够避免由于终端设备不了解网络侧的相关信息而出现的问题。 In the above technical solution, the first network device instructs the terminal device to determine or calculate the TA value with the first network device, so that the terminal device knows that the first network device also supports the two-step random access process, and then determines or calculates The TA value can avoid problems that occur because the terminal device does not understand related information on the network side.
在一种可能的实现方式中， 该第二指示信息来自该第一网络设备； 或者该第二指示信 息来自第二网络设备， 该第二网络设备与该第一网络设备不同。 In a possible implementation manner, the second indication information comes from the first network device; or the second indication information comes from a second network device, and the second network device is different from the first network device.
可以理解地， 在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连 接状态进行 TA值调整的情况下， 第二指示信息可以来自于第一网络设备； 在终端设备从 第二网络设备切换至第一网络设备的情况下， 此时第一网络设备为目标网络设备， 第二网 络设备为源网络设备， 第二指示信息可以来自于第二网络设备。 因此， 可知上述技术方案 既可以应用于在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连接状 态进行 TA值调整的情况下， 也可以应用于在终端设备从第二网络设备切换至第一网络设 备的情况下。 Understandably, when the terminal device is in the connected state from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, the second indication information may come from the first network device; In a case where the second network device is switched to the first network device, the first network device is the target network device, the second network device is the source network device, and the second indication information may come from the second network device. Therefore, it can be seen that the above technical solution can be applied to the case where the terminal device is in the connected state from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, and can also be applied to the terminal device from the second When the network device is switched to the first network device.
在一种可能的实现方式中， 该第一指示信息承载于广播消息或者 RRC专有信令中。 可以理解地， 在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连 接状态进行 TA值调整的情况下， 第一指示信息可以承载于广播消息中； 在终端设备从第 二网络设备切换至第一网络设备的情况下， 此时第一网络设备为目标网络设备， 第二网络 设备为源网络设备， 第一指示信息可以承载于 RRC专有信令（例如， RRC重配命令等） 中。 此外， 在处于第一网络设备的服务范围内的终端设备比较多的情况下， 将第一指示信 息承载于广播消息中， 可以节省信令； 在处于第一网络设备的服务范围内的终端设备比较 少的情况下， 将第一指示信息承载于 RRC专有信令中， 可以节省信令。 因此， 在不同情 况下或场景下， 将第一指示信息承载于相应的信令中， 可以节省终端设备与网络设备之间 的信令。 In a possible implementation manner, the first indication information is carried in a broadcast message or RRC dedicated signaling. Understandably, when the terminal device is in the connected state from the idle state/inactive state to the connected state, or when the terminal device is in the connected state to adjust the TA value, the first indication information may be carried in the broadcast message; Second, when the network device is switched to the first network device, the first network device is the target network device and the second network device is the source network device. The first indication information may be carried in RRC dedicated signaling (for example, RRC reconfiguration). With commands, etc.). In addition, in the case where there are more terminal devices within the service range of the first network device, carrying the first indication information in the broadcast message can save signaling; in the case of terminal devices within the service range of the first network device In less cases, the first indication information is carried in the RRC dedicated signaling, which can save signaling. Therefore, in different situations or scenarios, the first indication information is carried in the corresponding signaling, which can save signaling between the terminal device and the network device.
第二方面， 本申请提供了一种通信方法， 该方法包括： 第二网络设备向第一网络设备 发送切换请求， 该切换请求包括第三指示信息， 该第三指示信息用于指示终端设备能否确 定与该第一网络设备之间的定时提前 TA值;该第二网络设备向该终端设备发送切换命令， 该切换命令用于指示该终端设备由该第二网络设备切换到该第一网络设备。 In a second aspect, the present application provides a communication method, the method includes: a second network device sends a handover request to a first network device, the handover request includes third indication information, and the third indication information is used to instruct the terminal device to be able to Whether to determine the timing advance TA value with the first network device; the second network device sends a switching command to the terminal device, the switching command is used to instruct the terminal device to switch from the second network device to the first network equipment.
在上述技术方案中，第二网络设备向第一网络设备指示终端设备能否确定与该第一网 络设备之间的定时提前 TA值， 以便第一网络设备根据终端设备的功能或者能力分配接入 资源， 从而减少终端设备与网络设备连接的中断时间， 降低切换失败率。 In the above technical solution, the second network device indicates to the first network device whether the terminal device can determine the timing advance TA value with the first network device, so that the first network device allocates access according to the function or capability of the terminal device Resources, thereby reducing the interruption time of the connection between the terminal device and the network device, and reducing the handover failure rate.
在一种可能的实现方式中， 该方法还包括： 该第二网络设备从该第一网络设备接收对 应于该切换请求的响应消息， 该响应消息包括第四指示信息， 该第四指示信息用于指示由 该终端设备确定或计算该终端设备与该第一网络设备之间的 TA值。 In a possible implementation manner, the method further includes: the second network device receives a response message corresponding to the handover request from the first network device, the response message includes fourth indication information, and the fourth indication information is used To indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device.
在上述技术方案中，第一网络设备向第二网络设备指示由该终端设备确定或计算该终 端设备与该第一网络设备之间的 TA值， 以便第二网络设备向终端设备指示终端设备确定 或计算与第一网络设备之间的 TA值， 这样终端设备可知第一网络设备同样支持两步随机 接入过程， 进而再确定或计算 TA值， 能够避免由于终端设备不了解网络侧的相关信息而 出现的问题。 In the above technical solution, the first network device indicates to the second network device that the terminal device determines or calculates the TA value between the terminal device and the first network device, so that the second network device instructs the terminal device to determine Or calculate the TA value with the first network device, so that the terminal device can know that the first network device also supports the two-step random access process, and then determine or calculate the TA value, which can avoid the terminal device not knowing the relevant information on the network And the problem arises.
在一种可能的实现方式中， 该响应消息还包括第一资源以及第一无线网络临时标识 RNTI， 该第一资源与该第一 RNTI存在对应关系。 In a possible implementation manner, the response message further includes the first resource and the first wireless network temporary identifier RNTI, the first resource has a corresponding relationship with the first RNTI.
在上述技术方案中， 第一网络设备向第二网络设备指示第一资源以及第一时标识 RNTI, 以便第二网络设备向终端设备指示第一资源以及第一 RNTI, 这样终端设备无需发 送 Msgl和接收 Msg2就可以可获得第一资源和第一 RNTI,也即是说，可以省去现有技术 的随机接入过程中前两次信令交互， 从而提高终端设备接入网络的速度。 In the above technical solution, the first network device indicates the first resource and the first time identifier RNTI to the second network device, so that the second network device indicates the first resource and the first RNTI to the terminal device, so that the terminal device does not need to send Msgl and The first resource and the first RNTI can be obtained by receiving the Msg2, that is, the first two signaling interactions in the random access process of the prior art can be omitted, thereby increasing the speed of the terminal device accessing the network.
此外， 第一资源与第一 RNTI存在对应关系， 也就是说， 终端设备确定了发送第一消 息的资源就确定了第一 RNTI, 这样第一网络设备发送第二消息和终端设备接收第二消息 所使用的 RNTI是一致的， 从而使得第二消息能够正确传输。 In addition, there is a corresponding relationship between the first resource and the first RNTI, that is, the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message The RNTI used is consistent, so that the second message can be transmitted correctly.
在一种可能的实现方式中， 该切换命令包括第一指示信息， 该第一指示信息用于指示 该第一资源以及第一 RNTI, 该第一资源与该第一 RNTI存在对应关系。 In a possible implementation manner, the handover command includes first indication information, and the first indication information is used to indicate the first resource and the first RNTI, and the first resource and the first RNTI have a corresponding relationship.
在上述技术方案中， 终端设备通过第一指示信息获取第一资源和第一 RNTI, 这样终 端设备无需发送 Msgl和接收 Msg2就可以可获得第一资源和第一 RNTI, 也即是说， 可以 省去现有技术的随机接入过程中前两次信令交互， 从而提高终端设备接入网络的速度。 In the above technical solution, the terminal device obtains the first resource and the first RNTI through the first indication information, so that the terminal device can obtain the first resource and the first RNTI without sending Msg1 and receiving Msg2, that is, it can save The first two signaling interactions in the random access process in the prior art are eliminated, thereby increasing the speed of the terminal device accessing the network.
此外， 第一资源与第一 RNTI存在对应关系， 也就是说， 终端设备确定了发送第一消 息的资源就确定了第一 RNTI, 这样第一网络设备发送第二消息和终端设备接收第二消息 所使用的 RNTI是一致的， 从而使得第二消息能够正确传输。 In addition, there is a corresponding relationship between the first resource and the first RNTI, that is, the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message The RNTI used is consistent, so that the second message can be transmitted correctly.
在一种可能的实现方式中， 该切换命令还包括第二指示信息， 该第二指示信息用于指 示该终端设备确定或者计算该定时提前 TA值。 In a possible implementation manner, the handover command further includes second indication information, and the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA value.
在上述技术方案中， 由第二网络设备指示终端设备确定或计算与第一网络设备之间的 TA值， 这样终端设备可知第一网络设备同样支持两步随机接入过程， 进而再确定或计算 TA值， 能够避免由于终端设备不了解网络侧的相关信息而出现的问题。 In the above technical solution, the second network device instructs the terminal device to determine or calculate the TA value with the first network device, so that the terminal device can know that the first network device also supports the two-step random access process, and then determine or calculate The TA value can avoid problems that occur because the terminal device does not understand related information on the network side.
在一种可能的实现方式中， 该方法还包括： 该第二网络设备向该终端设备发送第三消 息， 该第三消息用于请求该终端设备反馈能否确定或计算与网络设备之间的 TA值； 和 / 或该第二网络设备从该终端设备接收第四消息，该第四消息用于指示该终端设备能否确定 或计算与网络设备之间的 TA值。 In a possible implementation manner, the method further includes: the second network device sends a third message to the terminal device, the third message is used to request the terminal device to feed back whether it can determine or calculate the relationship with the network device TA value; and/or the second network device receives a fourth message from the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
在上述技术方案中， 第二网络设备确定终端设备能否确定或计算与网络设备之间的 TA值的信息， 以便第二网络设备向第一网络设备反馈终端设备的能力， 进而实现第一网 络设备根据终端设备的能力确定切换请求中指示的资源（例如， 当终端设备能够确定或计 算 TA值时， 第一网络设备在切换请求中指示发送 Msg3的资源； 当终端设备不能确定或 计算 TA值时， 第一网络设备在切换请求中指示发送 Msg 1的资源） ， 从而减少终端设备 与网络设备连接的中断时间， 降低切换失败率。 In the above technical solution, the second network device determines whether the terminal device can determine or calculate the TA value information with the network device, so that the second network device feeds back the capability of the terminal device to the first network device, thereby realizing the first network The device determines the resource indicated in the handover request according to the capabilities of the terminal device (for example, when the terminal device can determine or calculate the TA value, the first network device instructs the resource to send Msg3 in the handover request; when the terminal device cannot determine or calculate the TA value At this time, the first network device instructs to send the resource of Msg 1 in the handover request, thereby reducing the interruption time of the connection between the terminal device and the network device and reducing the handover failure rate.
第三方面， 本申请提供了一种通信方法， 该方法包括： 第一网络设备从第二网络设备 接收切换请求， 该切换请求包括第三指示信息， 该第三指示信息用于指示终端设备能否确 定与该第一网络设备之间的定时提前 TA值； 该第一网络设备根据该第三指示信息， 确定 该终端设备能否确定与该第一网络设备之间的 TA值。 In a third aspect, the present application provides a communication method, the method includes: a first network device receives a handover request from a second network device, the handover request includes third indication information, and the third indication information is used to indicate that the terminal device can Whether to determine the TA value with the first network device; the first network device determines whether the terminal device can determine the TA value with the first network device according to the third indication information.
在上述技术方案中，第二网络设备向第一网络设备指示终端设备能否确定与该第一网 络设备之间的定时提前 TA值， 以便第一网络设备根据终端设备的功能或者能力分配接入 资源， 从而减少终端设备与网络设备连接的中断时间， 降低切换失败率。 In the above technical solution, the second network device indicates to the first network device whether the terminal device can determine the timing advance TA value with the first network device, so that the first network device allocates access according to the function or capability of the terminal device Resources, thereby reducing the interruption time of the connection between the terminal device and the network device, and reducing the handover failure rate.
在一种可能的实现方式中， 该方法还包括： 该第一网络设备向该第二网络设备发送对 应于该切换请求的响应消息， 该响应消息包括第四指示信息， 该第四指示信息用于指示由 该终端设备确定或计算该终端设备与该第一网络设备之间的 TA值。 In a possible implementation manner, the method further includes: the first network device sends a pair to the second network device In response to a response message of the handover request, the response message includes fourth indication information, and the fourth indication information is used to indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device.
在上述技术方案中，第一网络设备向第二网络设备指示由该终端设备确定或计算该终 端设备与该第一网络设备之间的 TA值， 以便第二网络设备向终端设备指示终端设备确定 或计算与第一网络设备之间的 TA值， 这样终端设备可知第一网络设备同样支持两步随机 接入过程， 进而再确定或计算 TA值， 能够避免由于终端设备不了解网络侧的相关信息而 出现的问题。 In the above technical solution, the first network device indicates to the second network device that the terminal device determines or calculates the TA value between the terminal device and the first network device, so that the second network device instructs the terminal device to determine Or calculate the TA value with the first network device, so that the terminal device can know that the first network device also supports the two-step random access process, and then determine or calculate the TA value, which can avoid the terminal device not knowing the relevant information on the network side And the problem arises.
在一种可能的实现方式中， 该响应消息还包括第一资源以及第一无线网络临时标识 RNTI， 该第一资源与该第一 RNTI存在对应关系。 In a possible implementation manner, the response message further includes the first resource and the first radio network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
在上述技术方案中， 第一网络设备向第二网络设备指示第一资源以及第一时标识 RNTI, 以便第二网络设备向终端设备指示第一资源以及第一 RNTI, 这样终端设备无需发 送 Msgl和接收 Msg2就可以可获得第一资源和第一 RNTI,也即是说，可以省去现有技术 的随机接入过程中前两次信令交互， 从而提高终端设备接入网络的速度。 In the above technical solution, the first network device indicates the first resource and the first time identifier RNTI to the second network device, so that the second network device indicates the first resource and the first RNTI to the terminal device, so that the terminal device does not need to send Msgl and The first resource and the first RNTI can be obtained by receiving the Msg2, that is, the first two signaling interactions in the random access process of the prior art can be omitted, thereby increasing the speed of the terminal device accessing the network.
此外， 第一资源与第一 RNTI存在对应关系， 也就是说， 终端设备确定了发送第一消 息的资源就确定了第一 RNTI, 这样第一网络设备发送第二消息和终端设备接收第二消息 所使用的 RNTI是一致的， 从而使得第二消息能够正确传输。 In addition, there is a corresponding relationship between the first resource and the first RNTI, that is, the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message The RNTI used is consistent, so that the second message can be transmitted correctly.
在一种可能的实现方式中， 该方法还包括： 该第一网络设备从该终端设备接收该 TA 值。 In a possible implementation manner, the method further includes: the first network device receives the TA value from the terminal device.
由于终端设备可能会发生位置改变， 所以终端设备与第一网络设备之间的 TA值也应 随之改变。 考虑到上述问题， 在上述技术方案中， 第一网络设备接收终端设备上报的 TA 值， 以便在终端设备发生位置改变的情况下对 TA值进行调整。 Since the location of the terminal device may change, the TA value between the terminal device and the first network device should also change accordingly. In consideration of the foregoing problems, in the foregoing technical solution, the first network device receives the TA value reported by the terminal device, so as to adjust the TA value when the location of the terminal device changes.
第四方面， 本申请提供了一种通信的方法， 该方法包括： 第一网络设备向该终端设备 发送第二指示信息，该第二指示信息用于指示该终端设备确定或者计算该定时提前 TA值； 该第一网络设备从该终端设备接收该 TA值。 In a fourth aspect, the present application provides a communication method, the method includes: a first network device sends second indication information to the terminal device, the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA Value; the first network device receives the TA value from the terminal device.
在上述技术方案中， 由第一网络设备指示终端设备确定或计算与第一网络设备之间的 TA值， 这样终端设备可知第一网络设备同样支持两步随机接入过程， 进而再确定或计算 TA值， 能够避免由于终端设备不了解网络侧的相关信息而出现的问题。 In the above technical solution, the first network device instructs the terminal device to determine or calculate the TA value with the first network device, so that the terminal device knows that the first network device also supports the two-step random access process, and then determines or calculates The TA value can avoid problems that occur because the terminal device does not understand related information on the network side.
在一种可能的实现方式中， 该方法还包括： 该第一网络设备向该终端设备发送第一指 示信息， 该第一指示信息用于指示第一资源以及第一 RNTI, 该第一资源与该第一 RNTI 存在对应关系。 In a possible implementation, the method further includes: the first network device sends first indication information to the terminal device, where the first indication information is used to indicate the first resource and the first RNTI, the first resource and The first RNTI has a corresponding relationship.
在上述技术方案中， 终端设备通过第一指示信息获取第一资源和第一 RNTI, 这样终 端设备无需发送 Msgl和接收 Msg2就可以可获得第一资源和第一 RNTI, 也即是说， 可以 省去现有技术的随机接入过程中前两次信令交互， 从而提高终端设备接入网络的速度。 In the above technical solution, the terminal device obtains the first resource and the first RNTI through the first indication information, so that the terminal device can obtain the first resource and the first RNTI without sending Msg1 and receiving Msg2, that is, it can save The first two signaling interactions in the random access process in the prior art are eliminated, thereby increasing the speed of the terminal device accessing the network.
此外， 第一资源与第一 RNTI存在对应关系， 也就是说， 终端设备确定了发送第一消 息的资源就确定了第一 RNTI, 这样第一网络设备发送第二消息和终端设备接收第二消息 所使用的 RNTI是一致的， 从而使得第二消息能够正确传输。 In addition, there is a corresponding relationship between the first resource and the first RNTI, that is, the first RNTI is determined when the terminal device determines the resource for sending the first message, so that the first network device sends the second message and the terminal device receives the second message The RNTI used is consistent, so that the second message can be transmitted correctly.
在一种可能的实现方式中， 该第一指示信息承载于广播消息中。 通过上述技术方案， 可以节省信令。 In a possible implementation manner, the first indication information is carried in a broadcast message. Through the above technical solution, signaling can be saved.
第五方面， 本申请提供了一种终端设备， 包括用于执行第一方面或第一方面任意一种 实现方式中的模块。 In a fifth aspect, this application provides a terminal device, including a terminal device for executing the first aspect or any one of the first aspect Module in the implementation mode.
第六方面， 本申请提供了一种网络设备， 包括用于执行第二方面或第二方面任意一种 实现方式中的模块。 In a sixth aspect, the present application provides a network device, including a module used to execute the second aspect or any implementation manner of the second aspect.
第七方面， 本申请提供了一种网络设备， 包括用于执行第三方面或第三方面任意一种 实现方式中的模块。 In a seventh aspect, this application provides a network device, including a module used to execute the third aspect or any implementation manner of the third aspect.
第八方面， 本申请提供了一种网络设备， 包括用于执行第四方面或第四方面任意一种 实现方式中的模块。 In an eighth aspect, the present application provides a network device, including a module used to execute the fourth aspect or any one of the implementation manners of the fourth aspect.
第九方面， 本申请提供了一种芯片， 所述芯片与存储器相连， 或者所述芯片中包括存 储器， 用于读取并执行所述存储器中存储的软件程序， 以实现第一方面或第一方面任意一 种实现方式所述的方法。 In a ninth aspect, the present application provides a chip that is connected to a memory, or the chip includes a memory, and is configured to read and execute a software program stored in the memory to implement the first aspect or the first aspect. The method described in any one of the implementation modes.
第十方面， 本申请提供了一种芯片， 所述芯片与存储器相连， 或者所述芯片中包括存 储器， 用于读取并执行所述存储器中存储的软件程序， 以实现第二方面或第二方面任意一 种实现方式所述的方法。 In a tenth aspect, the present application provides a chip that is connected to a memory, or the chip includes a memory, and is configured to read and execute a software program stored in the memory to implement the second aspect or the second aspect. The method described in any one of the implementation modes.
第十一方面， 本申请提供了一种芯片， 所述芯片与存储器相连， 或者所述芯片中包括 存储器， 用于读取并执行所述存储器中存储的软件程序， 以实现第三方面或第三方面任意 一种实现方式所述的方法。 In an eleventh aspect, the present application provides a chip that is connected to a memory, or the chip includes a memory, and is used to read and execute a software program stored in the memory to implement the third aspect or the first aspect. The method described in any one of the three aspects.
第十二方面， 本申请提供了一种芯片， 所述芯片与存储器相连， 或者所述芯片中包括 存储器， 用于读取并执行所述存储器中存储的软件程序， 以实现第四方面或第四方面任意 一种实现方式所述的方法。 In a twelfth aspect, the present application provides a chip that is connected to a memory, or the chip includes a memory, and is configured to read and execute a software program stored in the memory to implement the fourth aspect or the first aspect. The method described in any one of the four aspects.
第十三方面， 本申请提供了一种终端设备， 包括收发器、 处理器和存储器， 用于执行 第一方面或第一方面任意一种实现方式所述的方法。 In a thirteenth aspect, this application provides a terminal device, including a transceiver, a processor, and a memory, configured to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
第十四方面， 本申请提供了一种网络设备， 包括收发器、 处理器和存储器， 用于执行 第二方面或第二方面任意一种实现方式所述的方法。 In a fourteenth aspect, the present application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the second aspect or any implementation manner of the second aspect.
第十五方面， 本申请提供了一种网络设备， 包括收发器、 处理器和存储器， 用于执行 第三方面或第三方面任意一种实现方式所述的方法。 In a fifteenth aspect, the present application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the third aspect or any one of the implementation manners of the third aspect.
第十六方面， 本申请提供了一种网络设备， 包括收发器、 处理器和存储器， 用于执行 第四方面或第四方面任意一种实现方式所述的方法。 In a sixteenth aspect, this application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the fourth aspect or any one of the implementation manners of the fourth aspect.
第十七方面， 本申请提供了一种计算机可读存储介质， 包括指令， 当其在终端设备上 运行时， 使得终端设备执行第一方面或第一方面任意一种实现方式所述的方法。 In a seventeenth aspect, this application provides a computer-readable storage medium, including instructions, which when run on a terminal device, cause the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
第十八方面， 本申请提供了一种计算机可读存储介质， 包括指令， 当其在网络设备上 运行时， 使得网络设备执行第二方面或第二方面任意一种实现方式所述的方法。 In an eighteenth aspect, this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
第十九方面， 本申请提供了一种计算机可读存储介质， 包括指令， 当其在网络设备上 运行时， 使得网络设备执行第三方面或第三方面任意一种实现方式所述的方法。 In a nineteenth aspect, this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the third aspect or any one of the implementation manners of the third aspect.
第二十方面， 本申请提供了一种计算机可读存储介质， 包括指令， 当其在网络设备上 运行时， 使得网络设备执行第四方面或第四方面任意一种实现方式所述的方法。 In a twentieth aspect, this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the fourth aspect or any one of the implementation manners of the fourth aspect.
第二十一方面， 本申请提供了一种计算机程序产品， 当其在终端设备上运行时， 使得 终端设备执行第一方面或第一方面任意一种实现方式所述的方法。 In the twenty-first aspect, this application provides a computer program product, which when running on a terminal device, causes the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
第二十二方面， 本申请提供了一种计算机程序产品， 当其在网络设备上运行时， 使得 网络设备执行第二方面或第二方面任意一种实现方式所述的方法。 第二十三方面， 本申请提供了一种计算机程序产品， 当其在网络设备上运行时， 使得 网络设备执行第三方面或第三方面任意一种实现方式所述的方法。 In a twenty-second aspect, the present application provides a computer program product, which when running on a network device, causes the network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect. In the twenty-third aspect, this application provides a computer program product, which when running on a network device, causes the network device to execute the method described in the third aspect or any one of the implementation manners of the third aspect.
第二十四方面， 本申请提供了一种计算机程序产品， 当其在网络设备上运行时， 使得 网络设备执行第四方面或第四方面任意一种实现方式所述的方法。 附图说明 In a twenty-fourth aspect, this application provides a computer program product, which when running on a network device, causes the network device to execute the method described in the fourth aspect or any one of the implementation manners of the fourth aspect. Description of the drawings
图 1是可以应用本申请实施例的技术方案的系统的架构图。 Fig. 1 is an architecture diagram of a system that can apply the technical solutions of the embodiments of the present application.
图 2是现有技术的随机接入的示意性流程图。 Fig. 2 is a schematic flow chart of random access in the prior art.
图 3是本申请实施例的通信方法的示意性流程图。 FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.
图 4是终端设备随机接入第一网络设备的示意性流程图。 Fig. 4 is a schematic flowchart of a terminal device randomly accessing a first network device.
图 5是终端设备从第二网络设备切换至第一网络设备的示意性流程图。 Fig. 5 is a schematic flowchart of the terminal device switching from the second network device to the first network device.
图 6是本申请实施例的终端设备的示意性结构图。 Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
图 7是本申请实施例的网络设备的示意性结构图。 Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.
图 8是本申请另一实施例的网络设备的示意性结构图。 Fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present application.
图 9是本申请另一实施例的网络设备的示意性结构图。 Fig. 9 is a schematic structural diagram of a network device according to another embodiment of the present application.
图 10是本申请另一实施例提供的终端设备的示意性结构图。 FIG. 10 is a schematic structural diagram of a terminal device provided by another embodiment of the present application.
图 11是本申请另一实施例提供的网络设备的示意性结构图。 FIG. 11 is a schematic structural diagram of a network device provided by another embodiment of the present application.
图 12是本申请另一实施例提供的网络设备的示意性结构图。 FIG. 12 is a schematic structural diagram of a network device provided by another embodiment of the present application.
图 13是本申请另一实施例提供的网络设备的示意性结构图。 具体实施方式 FIG. 13 is a schematic structural diagram of a network device provided by another embodiment of the present application. detailed description
下面将结合附图， 对本申请中的技术方案进行描述。 The technical solution in this application will be described below in conjunction with the drawings.
本申请实施例的技术方案可以应用于各种通信系统，只要该通信系统中存在实体需要 发送传输方向指示信息， 另一个实体需要接收该指示信息， 并根据该指示信息确定一定时 间内的传输方向。 例如： 全球移动通信 ( global system for mobile communications, GSM ) 系统、码分多址 ( code division multiple access, CDMA )系统、宽带码分多址 ( wideband code division multiple access, WCDMA )系统、 通用分组无线业务 ( general packet radio service, GPRS ) 长期演进 ( long term evolution, LTE ) 系统、 LTE频分双工 ( frequency division duplex, FDD )系统、 LTE时分双工( time division duplex, TDD )、通用移动通信系统 ( universal mobile telecommunication system, UMTS ) 全球互联微波接入 ( worldwide interoperability for microwave access, WiMAX )通信系统、 未来的第五代 ( 5th generation, 5G ) 系统或新 无线 ( new radio, NR )等。 The technical solutions of the embodiments of the present application can be applied to various communication systems, as long as there is an entity in the communication system that needs to send transmission direction indication information, another entity needs to receive the indication information, and determine the transmission direction within a certain period of time according to the indication information . For example: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS) long term evolution (long term evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), general mobile communication system ( universal mobile telecommunication system, UMTS) worldwide interoperability for microwave access (WiMAX) communication system, the future 5th generation (5G) system or new radio (NR), etc.
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、 移动台、 远方站、 远程终端、 移动设备、 用户终端、 终端、 无线通信设备、 用户代理或用 户装置。终端设备还可以是蜂寫电话、无绳电话、会话启动协议 ( session initiation protocol, SIP )电话、 无线本地环路 ( wireless local loop, WLL )站、 个人数字助理 ( personal digital assistant, PDA ) 具有无线通信功能的手持设备、 计算设备或连接到无线调制解调器的 其它处理设备、 车载设备、 可穿戴设备， 未来 5G网络中的终端设备或者未来演进的公用 陆地移动通信网络 ( public land mobile network, PLMN ) 中的终端设备等， 本申请实施例 对此并不限定。 The terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. The terminal device can also be a bee phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA) with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of public land mobile network (PLMN) Terminal equipment, etc., embodiments of the application This is not limited.
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全 球移动通信 ( global system for mobile communications , GSM )系统或码分多址 ( code division multiple access, CDMA ) 中的基站 ( base transceiver station, BTS ) , 也可以是宽带码分 多址 ( wideband code division multiple access, WCDMA ) 系统中的基站 ( NodeB , NB ) , 还可以是 LTE系统中的演进型基站 ( evolved NodeB , eNB或 eNodeB ) , 还可以是云无线 接入网络 ( cloud radio access network, CRAN )场景下的无线控制器， 或者该网络设备可 以为中继站、 接入点、 车载设备、 可穿戴设备以及未来 5G网络中的网络设备或者未来演 进的 PLMN网络中的网络设备等， 本申请实施例并不限定。 The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA) The base transceiver station (base transceiver station, BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evolved base station) in the LTE system. NodeB, eNB or eNodeB), it can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and the future The network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
在本申请实施例中， 终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统 层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器 ( central processing unit, CPU )、 内存管理单元 ( memory management unit, MMU )和内存 (也称为主存)等硬件> 该操作系统可以是任意一种或多种通过进程 ( process ) 实现业务处理的计算机操作系统， 例如， Linux操作系统、 Unix操作系统、 Android操作系统、 iOS操作系统或 windows操 作系统等。 该应用层包含浏览器、 通讯录、 文字处理软件、 即时通信软件等应用。 并且， 本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够 通过运行记录有本申请实施例的提供的方法的代码的程序， 以根据本申请实施例提供的方 法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备， 或者， 是终端设备或网络设备中能够调用程序并执行程序的功能模块。 In the embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU) and memory (also known as main memory) > The operating system can be any one or more of the processes (process) A computer operating system that implements business processing, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as browser, address book, word processing software, instant messaging software, etc. Moreover, the embodiments of the present application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the present application, as long as the program that records the code of the method provided in the embodiments of the present application can be provided according to the embodiments of the present application. For example, the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
另外， 本申请的各个方面或特征可以实现成方法、 装置或使用标准编程和 /或工程技 术的制品。 本申请中使用的术语 “制品” 涵盖可从任何计算机可读器件、 载体或介质访问 的计算机程序。 例如， 计算机可读介质可以包括， 但不限于 :磁存储器件 (例如， 硬盘、 软盘或磁带等)， 光盘 (例如， 压缩盘 ( compact disc, CD )、 数字通用盘 ( digital versatile disc, DVD )等)，智能卡和闪存器件(例如，可擦写可编程只读存储器( erasable programmable read-only memory , EPROM ) 、 卡、 棒或钥匙驱动器等) 。 另外， 本文描述的各种存储介 质可代表用于存储信息的一个或多个设备和 /或其它机器可读介质。 术语 “机器可读介质” 可包括但不限于， 无线信道和能够存储、 包含和 /或承载指令和 /或数据的各种其它介质。 In addition, various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" used in this application covers a computer program accessible from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CDs), digital versatile discs (DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
应理解， 本申请中术语 “系统” 和 “网络” 在本文中常被可互换使用。 本申请中术语 “和 /或” ， 仅仅是一种描述关联对象的关联关系， 表示可以存在三种关系， 例如， A和 / 或 B , 可以表示： 单独存在 A, 同时存在 A和 B , 单独存在 B这三种情况。 另外， 本文中 字符 “/” ， 一般表示前后关联对象是一种 “或” 的关系。 It should be understood that the terms "system" and "network" in this application are often used interchangeably herein. The term "and/or" in this application is merely an association relationship describing associated objects, which means that there can be three types of relationships. For example, A and/or B can mean: A alone exists, A and B exist at the same time, alone There are three cases of B. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.
图 1是可以应用本申请实施例的技术方案的系统的架构图。 应理解， 图 1仅为示例性 的， 本申请实施例的技术方案还可以应用于其他的通信系统。 Fig. 1 is an architecture diagram of a system that can apply the technical solutions of the embodiments of the present application. It should be understood that FIG. 1 is only exemplary, and the technical solutions of the embodiments of the present application may also be applied to other communication systems.
如图 1所示， 核心网设备、 基站、 卫星站以及多个终端设备中的至少一个组成一个通 信系统。 在该通信系统中， 终端设备 1〜终端设备 6可以发送上行数据给基站， 基站需要 接收终端设备 1〜终端设备 6发送的上行数据。 同样地， 基站可以发送下行数据给终端设 备 1〜终端设备 6， 终端设备 1〜终端设备 6需要接收来自基站的下行数据。 此外， 终端设 备 4〜终端设备 6也可以组成一个通信系统。 在该通信系统中， 基站可以发送下行数据给 终端设备 1、 终端设备 2、 终端设备 5等； 终端设备 5也可以发送下行数据给终端设备 4、 终端设备 6。 As shown in FIG. 1, at least one of a core network device, a base station, a satellite station, and multiple terminal devices constitutes a communication system. In this communication system, the terminal equipment 1 to the terminal equipment 6 may send uplink data to the base station, and the base station needs to receive the uplink data sent by the terminal equipment 1 to the terminal equipment 6. Similarly, the base station may send downlink data to terminal equipment 1 to terminal equipment 6, and terminal equipment 1 to terminal equipment 6 need to receive downlink data from the base station. In addition, the terminal device 4 to the terminal device 6 may also form a communication system. In this communication system, the base station can send downlink data to the terminal device 1, the terminal device 2, the terminal device 5, etc.; the terminal device 5 can also send downlink data to the terminal device 4, Terminal equipment 6.
终端设备 7〜终端设备 9可以发送上行数据给卫星站， 卫星站需要接收终端设备 7〜终 端设备 9发送的上行数据。 同样地， 卫星站可以发送下行数据给终端设备 7〜终端设备 9 , 终端设备 7〜终端设备 9需要接收来自卫星站的下行数据。 The terminal device 7~terminal device 9 can send uplink data to the satellite station, and the satellite station needs to receive the uplink data sent by the terminal device 7~terminal device 9. Similarly, the satellite station can send downlink data to the terminal equipment 7-9, and the terminal equipment 7-9 needs to receive the downlink data from the satellite station.
基站和卫星站通过不同的方式连接到核心网设备， 基站与核心网设备、 卫星站与核心 网设备之间可以进行相互的数据发送。 其中， 卫星站与核心网设备通过观星站进行相互的 数据发送。 The base station and the satellite station are connected to the core network equipment in different ways, and the base station and the core network equipment, and the satellite station and the core network equipment can send mutual data. Among them, the satellite station and the core network equipment send mutual data through the stargazing station.
卫星站可以是空载平台携带的具有基站全部或者部分功能的载荷， 空载平台可以是运 行轨道确定的空中平台， 例如， 卫星、 无人机、 热气球、 飞机等； 也可以是运行轨道确定 的地面平台， 例如， 轨迹确定的公交车、 轮船等， 本申请实施例不做限定。 A satellite station can be a load carried by an airborne platform that has all or part of the functions of a base station. An airborne platform can be an aerial platform with a definite orbit, for example, a satellite, a drone, a hot air balloon, an airplane, etc.; it can also be a definite orbit For example, buses, ships, etc. whose trajectories are determined are not limited in the embodiment of the present application.
观星站可以具有非陆地网络 ( non terrestrial networks , NTN ) 网关的功能。 NTN网关 是一个传输网络层 ( transport Network layer, TNL ) 的节点， 用于实现数据或者信令的透 传， NTN网关也可以被替换为位置固定的接收节点或 donor node。 The stargazing station may have a non-terrestrial network (non terrestrial networks, NTN) gateway function. NTN gateway is a transport network layer (transport network layer, TNL) node, used to realize the transparent transmission of data or signaling, NTN gateway can also be replaced with a fixed location receiving node or donor node.
需要强调的是， 图 1所示的系统架构中可以包括多个卫星站或者多个基站， 卫星站也 可以服务类似终端设备 1〜终端设备 6的终端设备。 It should be emphasized that the system architecture shown in FIG. 1 may include multiple satellite stations or multiple base stations, and the satellite stations may also serve terminal devices similar to terminal devices 1 to 6.
图 1中所示的终端设备 1〜终端设备 9可以通过随机接入的方式接入网络设备 (例如， 图 1中的基站、 卫星站等) 。 The terminal equipment 1 to terminal equipment 9 shown in FIG. 1 can access network equipment (for example, the base station, satellite station, etc. in FIG. 1) through random access.
图 2是现有技术的随机接入的示意性流程图。 如图 2所示， 随机接入过程可以包括步 骤 210-240。 Fig. 2 is a schematic flow chart of random access in the prior art. As shown in Figure 2, the random access process may include steps 210-240.
在 210中， 终端设备从网络设备通知的随机接入码 ( preamble ) 资源中选取一个随机 接入码， 并发送给网络设备 (即 Msgl ) 。 In 210, the terminal device selects a random access code from the random access code (preamble) resource notified by the network device, and sends it to the network device (ie Msgl).
在 220中， 终端设备利用和在 210中选取的随机接入码相关的随机接入无线网络临时 标识 ( random access radio network temporary identifier, RA-RNTI ) ， 在特定的时间窗内接 收随机接入响应 ( random access response, RAR ) (即 Msg2 ) 在 RAR中可能携带定时 提前 ( timing advance, TA ) 值、 发送 Msg3 的时频资源、 临时小区无线网络临时标识 ( temporary cell radio network temporary identifier, TC-RNTI ) 和 back off参数等。 In 220, the terminal device uses a random access radio network temporary identifier (RA-RNTI) related to the random access code selected in 210 to receive a random access response within a specific time window (random access response, RAR) (i.e. Msg2) The RAR may carry the timing advance (TA) value, the time-frequency resource for sending Msg3, and the temporary cell radio network temporary identifier (TC-RNTI). ) And back off parameters.
其中， TA值一般用于终端设备的上行传输。 具体地， 为了使终端设备的上行数据到 达基站的时间包在希望的时间内， 预估针对由于距离引起的射频传输时延， 使得终端设备 提前相应时间发出上行数据。 网络设备可以通过接收终端设备发送的随机接入码的接收时 间来测算终端设备的 TA值。 Among them, the TA value is generally used for uplink transmission of terminal equipment. Specifically, in order to make the time packet for the uplink data of the terminal device to reach the base station within a desired time, the radio frequency transmission delay due to the distance is estimated, so that the terminal device sends the uplink data in advance correspondingly. The network device can measure the TA value of the terminal device by receiving the receiving time of the random access code sent by the terminal device.
在 230中， 终端设备在 RAR指示的时频资源上发送 Msg3。 如果终端设备处于连接状 态， Msg3 中可以包括终端设备的小区无线网络临时标识 ( cell radio network temporary identifier, C-RNTI ) 。 In 230, the terminal device sends Msg3 on the time-frequency resource indicated by the RAR. If the terminal device is in the connected state, Msg3 can include the cell radio network temporary identifier (C-RNTI) of the terminal device.
在 240中， 终端设备接收网络设备发送的 Msg4。 其中， 处于连接态的终端设备使用 C-RNTI接收 Msg4 , 如果成功接收到 Msg4 , 就认为终端设备随机接入成功； 处于空闲态 / 非激活态的终端设备使用 TC-RNTI接收 Msg4 , 并检测 Msg4中的冲突解决块， 如果通过 检测， 则认为终端设备随机接入成功， 将 TC-RNTI作为 C-RNTI使用。 In 240, the terminal device receives the Msg4 sent by the network device. Wherein, the terminal device in the connected state uses C-RNTI to receive Msg4, if it successfully receives Msg4, it is considered that the terminal device has succeeded in random access; the terminal device in the idle state/inactive state uses TC-RNTI to receive Msg4, and detects Msg4 If the conflict resolution block in, if it passes the detection, it is considered that the random access of the terminal device is successful, and the TC-RNTI is used as the C-RNTI.
由图 2所示的随机接入方案中， 终端设备与网络设备之间需要 4条信令交互。 由于每 一条终端设备和网络设备之间的信令交互， 需要一定的传输时间 (例如， 在卫星网络中， 特别是同步卫星网络中， 每条信令需要 500毫秒（ms） 的传输时间） ， 因此图 2中的随机 接入方案， 终端设备接入网络的速度会比较慢。 In the random access scheme shown in FIG. 2, four signaling interactions are required between the terminal device and the network device. Due to the signaling interaction between each terminal device and network device, a certain transmission time is required (for example, in a satellite network, Especially in the synchronous satellite network, each signal requires 500 milliseconds (ms) transmission time), so in the random access scheme in Figure 2, the speed of the terminal equipment accessing the network will be relatively slow.
本申请实施例提供的通信方法，可以减少随机接入过程中终端设备与网络设备之间信 令交互的次数， 从而能够提高终端设备接入网络的速度。 The communication method provided in the embodiments of the present application can reduce the number of signal interactions between the terminal device and the network device in the random access process, thereby improving the speed of the terminal device accessing the network.
图 3是本申请实施例的通信方法的示意性流程图。 图 3中的第一网络设备可以对应于 上文的网络设备。 图 3所示的方法可以包括以下内容的至少部分内容。 FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application. The first network device in Fig. 3 may correspond to the above network device. The method shown in FIG. 3 may include at least part of the following content.
在 310中， 终端设备确定或者计算与第一网络设备之间的 TA值。 In 310, the terminal device determines or calculates the TA value with the first network device.
本申请实施例中的终端设备可以是用户侧的一种用于接收或发射信号的实体， 例如， 手机、 用户设备（ user equipment， UE） 等。 本申请实施例中的网络设备可以是网络侧的 一种用于发射或接收信号的实体， 例如， 图 1所示的基站、 卫星站等。 可选地， 第一网络 设备为该终端设备将要接入的网络设备。 The terminal device in the embodiment of the present application may be an entity on the user side for receiving or transmitting signals, for example, a mobile phone, user equipment (user equipment, UE), and so on. The network device in the embodiment of the present application may be an entity on the network side for transmitting or receiving signals, for example, the base station, satellite station, etc. shown in FIG. 1. Optionally, the first network device is a network device to be accessed by the terminal device.
与第一网络设备之间的 TA值是终端设备与第一网络设备之间的 TA值。 也就是为了 使得终端设备的上行数据在期望的时间到达第一网络设备， 终端设备提前发送上行数据的 时间值。 The TA value with the first network device is the TA value between the terminal device and the first network device. That is, in order to make the uplink data of the terminal device reach the first network device at a desired time, the terminal device sends the time value of the uplink data in advance.
终端设备确定或计算与第一网络设备之间的 TA值的方法有很多。 There are many methods for the terminal device to determine or calculate the TA value with the first network device.
作为一个示例， 终端设备可以根据第一功率确定与第一网络设备之间的 TA值。 第一 功率为来自第一网络设备的下行信号的接收功率。 其中， 下行信号的接收功率可以是终端 设备接收到下行信号时下行信号的功率。 As an example, the terminal device may determine the TA value with the first network device according to the first power. The first power is the received power of the downlink signal from the first network device. Wherein, the received power of the downlink signal may be the power of the downlink signal when the terminal device receives the downlink signal.
例如，终端设备可以根据下行信号的接收功率和发射功率，得到下行信号的空间损耗， 再进一步根据下行信号的空间损耗得到与第一网络设备之间的 TA值。 具体地， 终端设备 可以通过第一网络设备广播消息获得下行信号的发射功率 P_t, 检测得到下行信号的接收 功率 P_r, 进一步根据空间损耗公式 P_r=P_t-PL （f, d, 其他参数） 得到下行信号的空间 损耗 PL; 空间损耗 PL是关于距离 d、 频率 f 和其他一些参数的函数， 其中， f和其他一 些参数是已知的， 因此可以反推出 d; 而 TA=2*d/c， 从而可以确定 TA值， 其中 c为光速。 For example, the terminal device may obtain the space loss of the downlink signal according to the received power and the transmit power of the downlink signal, and further obtain the TA value with the first network device according to the space loss of the downlink signal. Specifically, the terminal device may obtain the transmit power P_t of the downlink signal through the first network device broadcast message, detect the received power P_r of the downlink signal, and further obtain the downlink signal according to the space loss formula P_r=P_t-PL (f, d, other parameters) Signal spatial loss PL; Spatial loss PL is a function of distance d, frequency f and some other parameters. Among them, f and some other parameters are known, so d can be deduced; and TA=2*d/c, Thus the TA value can be determined, where c is the speed of light.
可选地， 下行信号可以是第一网络设备发送的下行同步参考信号或任意其他下行信 号， 只要终端设备可以获取该下行信号的发送功率和接收功率即可。 Optionally, the downlink signal may be a downlink synchronization reference signal sent by the first network device or any other downlink signal, as long as the terminal device can obtain the transmission power and the reception power of the downlink signal.
终端设备根据下行信号的接收功率确定与第一网络设备之间的 TA值还可以是其他具 体的实现方式， 本申请实施例不作具体限定。 The terminal device determining the TA value with the first network device according to the received power of the downlink signal may also be another specific implementation manner, which is not specifically limited in the embodiment of the present application.
作为另外一个示例， 终端设备可以根据第一距离确定与第一网络设备之间的 TA值， 其中，第一距离为终端设备与第一网络设备之间的距离。例如，终端设备根据公式 TA=2*d/c 确定 TA值， 其中， d为第一距离， c为光速。 As another example, the terminal device may determine the TA value with the first network device according to the first distance, where the first distance is the distance between the terminal device and the first network device. For example, the terminal device determines the TA value according to the formula TA=2*d/c, where d is the first distance and c is the speed of light.
终端设备确定第一距离的方式有很多， 例如， 终端设备可以通过终端设备所在位置和 第一网络设备所在位置确定， 又例如， 终端设备可以通过下行信号的发射功率和接收功率 确定， 本申请实施例不作具体限定。 There are many ways for the terminal device to determine the first distance. For example, the terminal device can be determined by the location of the terminal device and the location of the first network device. For another example, the terminal device can be determined by the transmit power and received power of the downlink signal. The examples are not specifically limited.
终端设备所在位置的确定方法有很多， 本申请实施例不作具体限定。 例如， 通过全球 定位系统、 基站定位等方法确定。 There are many methods for determining the location of the terminal device, which is not specifically limited in the embodiment of the present application. For example, it is determined by methods such as the global positioning system and base station positioning.
第一网络设备所在位置有很多种确定方式， 本申请实施例不作具体限定。 例如， 在 NTN 场景中， 第一网络设备可以为卫星站， 由于终端设备和卫星站直接连接的链路为可 视径， 因此终端设备根据自己的位置和第一网络设备的星座图即可确定终端设备与第一网 络设备之间的距离。 终端设备可以通过来自第一网络设备的广播消息或无线资源控制 ( radio resource control, RRC ) 专用信令获得第一网络设备的星座图。 There are many ways to determine the location of the first network device, which is not specifically limited in the embodiment of this application. For example, in the NTN scenario, the first network device may be a satellite station. Since the link directly connecting the terminal device and the satellite station is a visible path, the terminal device can determine it according to its own location and the constellation diagram of the first network device. Terminal equipment and the first network The distance between network devices. The terminal device may obtain the constellation diagram of the first network device through a broadcast message or radio resource control (radio resource control, RRC) dedicated signaling from the first network device.
其中， 星座图中记载了在某时某刻卫星所在的位置信息。 星座图还可以有其他表述方 式， 例如， 星座表、 星历表等， 以记录卫星所在位置信息为准。 为阐述方便， 本申请中采 用星座图的叫法。 Among them, the constellation diagram records the location information of the satellite at a certain moment. The constellation diagram may also have other expressions, for example, a constellation table, an ephemeris table, etc., based on the location information of the recorded satellite. For the convenience of explanation, the constellation diagram is used in this application.
作为另一个示例，终端设备可以根据第一功率和第一距离确定与第一网络设备之间的 TA值。 例如， 终端设备可以根据第一功率确定一个 TA值， 根据第一距离确定另一个 TA 值， 根据两个 TA值进一步得到终端设备与第一网络设备之间的 TA值。 As another example, the terminal device may determine the TA value with the first network device according to the first power and the first distance. For example, the terminal device may determine one TA value according to the first power, determine another TA value according to the first distance, and further obtain the TA value between the terminal device and the first network device according to the two TA values.
在其他的场景下，终端设备还可以通过其他的方式确定或计算与第一网络设备之间的 TA值， 本申请实施例不做限定。 In other scenarios, the terminal device may also determine or calculate the TA value with the first network device in other ways, which is not limited in the embodiment of the present application.
可选地， 在终端设备执行 310之前， 终端设备还可以接收第二指示消息， 第二指示信 息用于指示终端设备确定或计算与第一网络设备之间的 TA值。 也就是说终端设备在接收 到网络侧的第二指示信息的情况下才会自己确定与第一网络设备之间的 TA值。 其中， 第 二指示信息可以携带在新配置信令中， 也可以是复用现有的信令。 Optionally, before the terminal device executes 310, the terminal device may further receive a second indication message, where the second indication information is used to instruct the terminal device to determine or calculate the TA value with the first network device. That is to say, the terminal device will determine the TA value with the first network device by itself only after receiving the second indication information from the network side. Wherein, the second indication information may be carried in the new configuration signaling, or may reuse existing signaling.
第二指示信息可以通过明示、隐示或者不指示的方式指示终端设备确定或计算与第一 网络设备之间的 TA值。 以终端设备根据第一网络设备的星座图和终端设备所在位置确定 与第一网络设备之间的 TA值为例， 可以是终端设备接收到的第一指示信息中包括特定字 段、 字符或者标识位等， 明确指示终端设备确定或计算与第一网络设备之间的 TA值； 也 可以是终端设备接收到第一网络设备的星座图，终端设备即自行确定与第一网络设备之间 的 TA值； 也可以是第一终端设备默认自行确定与第一网络设备之间的 TA值。 The second indication information may instruct the terminal device to determine or calculate the TA value with the first network device in an explicit, implicit or non-indicating manner. Taking, for example, that the terminal device determines the TA value with the first network device according to the constellation diagram of the first network device and the location of the terminal device, it may be that the first indication information received by the terminal device includes a specific field, character or identification bit Etc., clearly instruct the terminal device to determine or calculate the TA value with the first network device; it can also be that the terminal device receives the constellation diagram of the first network device, and the terminal device determines the TA value with the first network device by itself ; It may also be that the first terminal device determines the TA value with the first network device by default.
在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连接状态进行 TA 值调整的情况下， 第二指示信息可以来自于第一网络设备； 在终端设备从第二网络设备切 换至第一网络设备的情况下， 此时第一网络设备为目标网络设备， 第二网络设备为源网络 设备， 第二指示信息可以来自于第二网络设备。 When the terminal device is in the process from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, the second indication information may come from the first network device; when the terminal device is from the second network device In the case of switching to the first network device, the first network device is the target network device, the second network device is the source network device, and the second indication information may come from the second network device.
在 320中，该终端设备根据该 TA值，在第一资源上向该第一网络设备发送第一消息。 第一消息可以是随机接入过程中的消息 3 ( Msg3 )或其他消息。 也就是说， 本申请实 施例的技术方案不仅可以应用在随机接入过程中，还可以应用在任意终端设备向网络设备 发送上行数据的场景中。本申请实施例以 Msg3为例对本申请实施例的技术方案进行描述。 In 320, the terminal device sends a first message to the first network device on the first resource according to the TA value. The first message may be message 3 (Msg3) or other messages in the random access process. That is to say, the technical solution of the embodiment of the present application can be applied not only in the random access process, but also in the scenario where any terminal device sends uplink data to the network device. The embodiment of the present application uses Msg3 as an example to describe the technical solution of the embodiment of the present application.
终端设备根据 TA值向第一网络设备发送 Msg3 ,可以理解为终端设备提前 TA值的时 间向第一网络设备发送 Msg3 The terminal device sends Msg3 to the first network device according to the TA value, which can be understood as the terminal device sends Msg3 to the first network device in advance of the TA value.
Msg3的传输为随机接入过程的一部分。 Msg3在上行共享信道上传输， 并且包含一个 C-RNTI的媒体接入控制层控制元素 ( media access controls control element, MAC CE )或 者公共控制信道 ( common control channel, CCCH ) 的服务数据单元 ( service data unit, SDU )。 其中 CCCH的 SDU可以包括 RRC连接建立请求消息、 RRC连接恢复请求消息、 RRC连接重建请求消息中的一个。第一消息也可携带 RRC重配完成消息。也就是说 Msg3 可以用于传输 RRC连接建立请求消息、 RRC连接恢复请求消息、 RRC连接重建请求消息、 RRC重配完成消息中的至少一个。 The transmission of Msg3 is part of the random access process. Msg3 is transmitted on the uplink shared channel, and contains a C-RNTI media access control layer control element (media access controls control element, MAC CE) or common control channel (common control channel, CCCH) service data unit (service data) unit, SDU ). The SDU of the CCCH may include one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reestablishment request message. The first message may also carry an RRC reconfiguration complete message. That is to say, Msg3 can be used to transmit at least one of the RRC connection establishment request message, the RRC connection recovery request message, the RRC connection reestablishment request message, and the RRC reconfiguration complete message.
可以理解地， 当终端设备处于连接态时， 终端设备已有 C-RNTI, 因此处于连接态的 终端设备在 Msg3中可以包括 C-RNTI,以便第一网络设备使用 C-RNTI对 Msg4进行加扰。 可选地， 终端设备还可以通过 Msg3将终端设备与第一网络设备之间的 TA值上报给 第一网络设备， 便于第一网络设备进行 TA调整。 Understandably, when the terminal device is in the connected state, the terminal device already has a C-RNTI, so the terminal device in the connected state may include the C-RNTI in the Msg3, so that the first network device uses the C-RNTI to scramble the Msg4 . Optionally, the terminal device may also report the TA value between the terminal device and the first network device to the first network device through Msg3, so that the first network device can adjust the TA.
可以理解地， 终端设备与第一网络设备之间的 TA值也可以通过后续的其他消息上报 给第一网络设备。 It is understandable that the TA value between the terminal device and the first network device may also be reported to the first network device through other subsequent messages.
用于传输 Msg3的第一资源可以包括用于传输 Msg3的时域资源、 频域资源、 码域资 源、 空间资源等中的至少一个。 可选地， 终端设备在执行 320之前还包括接收第一指示信 息， 第一指示信息用于指示第一资源。 The first resource used for transmitting Msg3 may include at least one of time domain resources, frequency domain resources, code domain resources, and space resources used for transmitting Msg3. Optionally, before executing 320, the terminal device further includes receiving first indication information, where the first indication information is used to indicate the first resource.
终端设备可以通过广播信息或者 RRC专用信令获得第一指示信息。 The terminal device may obtain the first indication information through broadcast information or RRC dedicated signaling.
在终端设备从空闲态 /非激活态到连接态的过程中或者终端设备处于连接状态进行 TA 值调整的情况下， 第一指示信息可以来自于第一网络设备； 在终端设备从第二网络设备切 换至第一网络设备的情况下， 此时第一网络设备为目标网络设备， 第二网络设备为源网络 设备， 第一指示信息可以来自于第二网络设备。 When the terminal device is in the process from the idle state/inactive state to the connected state or the terminal device is in the connected state to adjust the TA value, the first indication information may come from the first network device; when the terminal device is from the second network device In the case of switching to the first network device, the first network device is the target network device and the second network device is the source network device at this time, and the first indication information may come from the second network device.
对于处于空闲态 /非激活态的终端设备， 终端设备还没有 C-RNTI, 因此终端设备需要 一个临时的无线网络临时标识 ( radio network temporary identifier, RNTI )用于随机接入过 程中的信令的传输。 因此， 第一指示信息还可以用于指示第一无线网络临时标识 RNTI。 For the terminal equipment in the idle state/inactive state, the terminal equipment does not yet have a C-RNTI, so the terminal equipment needs a temporary radio network temporary identifier (RNTI) for the signaling in the random access process transmission. Therefore, the first indication information may also be used to indicate the first wireless network temporary identifier RNTI.
可选地， 第一 RNTI与第一资源存在对应关系。 换句话说， 第一 RNTI与第一资源相 关联， 当终端设备使用某资源传输 Msg3时， 终端设备将会使用与该资源对应的 RNTI。 例如， 一个资源对应一个第一 RNTI。 Optionally, there is a correspondence between the first RNTI and the first resource. In other words, the first RNTI is associated with the first resource, and when the terminal device uses a certain resource to transmit Msg3, the terminal device will use the RNTI corresponding to the resource. For example, one resource corresponds to one first RNTI.
可以理解地， 第一 RNTI可以通过隐示的方法确定， 例如， RNTI=函数 (第一资源的 时域位置、 第一资源的频域位置、 物理小区标识 ( physical cell identifier, PCI ) 物理上 行共享信道 ( physical uplink shared channel, PUSCH )序列类型) 。 Understandably, the first RNTI can be determined implicitly, for example, RNTI=function (time domain position of the first resource, frequency domain position of the first resource, physical cell identifier (PCI) physical uplink sharing Channel (physical uplink shared channel, PUSCH) sequence type).
在 320之后， 所述终端设备接收响应于所述第一消息的第二消息。 其中， 对于处于连 接态的终端设备可以使用 C-RNTI从第一网络设备接收响应于第一消息的第二消息;或者， 对于处于空闲态 /非激活态的终端设备可以使用第一 RNTI从第一网络设备接收响应于第 一消息的第二消息。 After 320, the terminal device receives a second message in response to the first message. Wherein, for the terminal device in the connected state, the C-RNTI can be used to receive the second message from the first network device in response to the first message; or, for the terminal device in the idle state/inactive state, the first RNTI can be used to receive the second message from the first network device. A network device receives a second message in response to the first message.
当第一消息为 Msg3时， 对应的第二消息可以包括 RRC连接建立消息、 RRC连接恢 复消息、 RRC连接重建消息、 RRC重配完成响应消息中的至少一个。 例如， 当 Msg3 中 包括 RRC连接建立请求消息时， 第二消息中可以包括 RRC连接建立消息； 当 Msg3中包 括 RRC连接恢复消息请求时， 第二消息中可以包括 RRC连接恢复消息等。 When the first message is Msg3, the corresponding second message may include at least one of an RRC connection establishment message, an RRC connection restoration message, an RRC connection reestablishment message, and an RRC reconfiguration complete response message. For example, when Msg3 includes an RRC connection establishment request message, the second message may include an RRC connection establishment message; when Msg3 includes an RRC connection recovery message request, the second message may include an RRC connection recovery message, etc.
第二消息还可以包括冲突解决消息。 对于处于连接态的终端设备， 当终端设备接收到 第二消息， 即可认为随机接入成功； 而对于处于空闲态 /非激活态的终端设备， 终端设备 还需要检测冲突解决消息中的冲突解决块， 当通过检测时才能认为终端设备随机接入成 功。 The second message may also include a conflict resolution message. For the terminal device in the connected state, when the terminal device receives the second message, it can be considered that the random access is successful; while for the terminal device in the idle state/inactive state, the terminal device also needs to detect the conflict resolution in the conflict resolution message Block, the terminal device can be considered as successful random access only when it passes the detection.
对于处于连接态的终端设备， 终端设备使用 C-RNTI接收第二消息； 对于处于空闲态 /非激活态的终端设备， 终端设备使用第一 RNTI接收第二消息，此时第二消息还可以携带 第一网络设备为终端设备分配的第二 RNTI， 第二 RNTI为后续终端设备与第一网络设备 之间进行通信使用的 RNTI。 For the terminal device in the connected state, the terminal device uses the C-RNTI to receive the second message; for the terminal device in the idle state/inactive state, the terminal device uses the first RNTI to receive the second message, and the second message may also carry A second RNTI allocated by the first network device to the terminal device, and the second RNTI is an RNTI used for subsequent communication between the terminal device and the first network device.
下面结合具体的例子对本申请实施例的通信方法进行描述。 The communication method of the embodiment of the present application will be described below with reference to specific examples.
图 4是终端设备随机接入第一网络设备的示意性流程图。 以第一消息为 Msg3、 第二消息为 Msg4为例。 Fig. 4 is a schematic flowchart of a terminal device randomly accessing a first network device. Take the first message as Msg3 and the second message as Msg4 as an example.
在 410中， 第一网络设备向终端设备发送广播消息， 广播消息中包括第一指示信息和 第二指示信息。 第一指示信息和第二指示信息可以携带在同一条广播消息中， 也可以携带 在两条广播消息中。 第二指示信息中包括第一网络设备的星座图（隐示终端设备使用星座 图确定与第一网络设备之间的 TA值）或者指示终端设备可以通过下行信号的发射功率和 接收功率预估 TA。 第一指示信息指示传输 Msg3的资源（例如， 时 /频位置）和每个 Msg3 资源关联的 RNTI。 In 410, the first network device sends a broadcast message to the terminal device, and the broadcast message includes the first indication information and the second indication information. The first indication information and the second indication information can be carried in the same broadcast message or in two broadcast messages. The second indication information includes the constellation diagram of the first network device (it implies that the terminal device uses the constellation diagram to determine the TA value with the first network device) or indicates that the terminal device can estimate the TA based on the transmit power and received power of the downlink signal . The first indication information indicates the resource (for example, time/frequency position) for transmitting Msg3 and the RNTI associated with each Msg3 resource.
在 420中， 终端设备确定或计算与第一网络设备之间的 TA值， 具体实现方法可参见 310的相关描述。 如果终端设备可以自行确定或计算与第一网络设备之间的 TA值， 则终 端设备确定或计算与第一网络设备之间的 TA值， 并执行 430; 如果终端设备不能自行确 定或计算与第一网络设备之间的 TA值， 则终端设备使用图 2所示的接入流程接入第一网 络设备。 In 420, the terminal device determines or calculates the TA value with the first network device. For a specific implementation method, refer to the related description of 310. If the terminal device can determine or calculate the TA value with the first network device by itself, the terminal device determines or calculates the TA value with the first network device, and executes 430; if the terminal device cannot determine or calculate the TA value with the first network device by itself, A TA value between network devices, the terminal device uses the access process shown in FIG. 2 to access the first network device.
在 430中， 终端设备利用确定或者计算得到的 TA值， 向第一网络设备发送 Msg3。 Msg3 中可以包括该 TA值； 如果终端设备处于连接态， Msg3 中还可以携带终端设备的 In 430, the terminal device uses the determined or calculated TA value to send Msg3 to the first network device. Msg3 can include the TA value; if the terminal device is in the connected state, Msg3 can also carry the terminal device’s
C-RNTI。 C-RNTI.
在 440中， 处于空闲态 /非激活态的终端设备用与传输 Msg3的资源相关联的 RNTI， 检测 Msg4, 并进行冲突解决判决， 如果通过判决， 则终端设备的随机接入成功， Msg4中 携带为第一网络设备为终端设备分配的第二 RNTI; 处于连接态的终端设备使用 C-RNTI, 检测 Msg4 , 如果检测到 Msg4, 就表示终端设备的随机接入成功。 In 440, the terminal device in the idle state/inactive state uses the RNTI associated with the resource for transmitting Msg3, detects Msg4, and makes a conflict resolution decision. If the decision is passed, the random access of the terminal device is successful, and Msg4 carries The second RNTI allocated to the terminal device for the first network device; the terminal device in the connected state uses the C-RNTI to detect Msg4, and if Msg4 is detected, it means that the random access of the terminal device is successful.
图 5 是终端设备从第二网络设备切换至第一网络设备的示意性流程图。 在蜂窝网络 中， 为了确保处于连接态的终端设备服务的连续性， 当终端设备移动到小区边缘时， 触发 网络设备的切换。 如图 5所示， 终端设备从第二网络设备切换至第一网络设备， 终端设备 会发起对第一网络设备的随机接入过程。 Fig. 5 is a schematic flowchart of the terminal device switching from the second network device to the first network device. In a cellular network, in order to ensure the continuity of services of the terminal equipment in the connected state, when the terminal equipment moves to the edge of the cell, the handover of the network equipment is triggered. As shown in Fig. 5, the terminal device switches from the second network device to the first network device, and the terminal device initiates a random access process to the first network device.
对于切换网络设备的场景， 由于第一网络设备尚未与终端设备建立连接， 因此第一网 络设备需要从第二网络设备获取一些终端设备的信息， 例如， 终端设备能否确定或者计算 与第一网络设备之间的 TA值等。 For the scenario of switching network devices, since the first network device has not yet established a connection with the terminal device, the first network device needs to obtain some terminal device information from the second network device, for example, whether the terminal device can determine or calculate the connection with the first network device TA value between devices, etc.
以第一消息为 Msg3、 第二消息为 Msg4为例。 Take the first message as Msg3 and the second message as Msg4 as an example.
在 504中， 第二网络设备向第一网络设备发送切换请求， 该切换请求包括第三指示信 息，该第三指示信息用于指示终端设备能否确定与该第一网络设备之间的定时提前 TA值。 In 504, the second network device sends a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance with the first network device. TA value.
一种可选的设计中， 在执行 504之前， 第二网络设备可以执行 501， 接收终端设备发 送的第四消息，该第四消息用于指示该终端设备能否确定或计算与网络设备之间的 TA值； 或者第二网络设备可以执行 501和成 502, 第二网络设备向终端设备发送第三消息， 第三 消息用于请求终端设备反馈能否确定或计算与网络设备之间的 TA值， 第二网络设备接收 终端设备发送的第四消息，第四消息用于指示终端设备能否确定或计算与网络设备之间的 TA值。 In an optional design, before executing 504, the second network device may execute 501 to receive a fourth message sent by the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the connection with the network device. Or the second network device can perform 501 and 502, the second network device sends a third message to the terminal device, the third message is used to request the terminal device to feedback whether it can determine or calculate the TA value with the network device The second network device receives a fourth message sent by the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
可选地，第三消息可以携带在位置信息请求中，第四消息可以携带在位置信息才艮告中。 一种可选的设计中， 在执行 504之前， 第二网络设备还可以执行 503， 第二网络设备 进行切换判决。 当确定需要从第二网络设备切换至第一网络设备时， 第二网络设备执行 504。 在 505中， 第一网络设备接收步骤 504中的切换请求， 根据 504中的切换请求中携带 的第三指示信息， 确定终端设备能够确定或计算与第一网络设备之间的 TA值。 Optionally, the third message may be carried in the location information request, and the fourth message may be carried in the location information report. In an optional design, before executing 504, the second network device may also execute 503, and the second network device makes a handover decision. When it is determined that it is necessary to switch from the second network device to the first network device, the second network device executes 504. In 505, the first network device receives the handover request in step 504, and according to the third indication information carried in the handover request in 504, determines that the terminal device can determine or calculate the TA value with the first network device.
在 506中， 当确定终端设备能够确定或计算与第一网络设备之间的 TA值时， 第一网 络设备在对应于 504中的切换请求的响应消息中携带第四指示信息， 第四指示信息用于指 示由终端设备确定或计算终端设备与第一网络设备之间的 TA值。 可选地， 该响应消息还 包括第一资源以及第一 RNTI， 其中第一资源包括用于传输 Msg3 的资源。 可选地， 该第 一资源与该第一 RNTI存在对应关系。 In 506, when it is determined that the terminal device can determine or calculate the TA value with the first network device, the first network device carries the fourth indication information in the response message corresponding to the handover request in 504, and the fourth indication information It is used to indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device. Optionally, the response message further includes the first resource and the first RNTI, where the first resource includes a resource for transmitting Msg3. Optionally, there is a correspondence between the first resource and the first RNTI.
当确定终端设备不能确定或计算与第一网络设备之间的 TA值时， 终端设备按照图 2 所示的接入流程接入第一网络设备， 第一网络设备在对应于 504中的切换请求的响应消息 中携带用于传输 Msg 1的资源。 When it is determined that the terminal device cannot determine or calculate the TA value with the first network device, the terminal device accesses the first network device according to the access procedure shown in FIG. 2, and the first network device corresponds to the handover request in 504 The response message of carries the resource used to transmit Msg 1.
在 507中， 第二网络设备向终端设备发送切换命令， 该切换命令用于指示该终端设备 由该第二网络设备切换到该第一网络设备。 In 507, the second network device sends a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
切换命令还可以包括第一指示信息或传输 Msgl的资源。 The handover command may also include the first indication information or the resource for transmitting Msgl.
可选地， 切换命令还可以包括第二指示信息。 所述第二指示信息可以参照上文中的阐 述。 Optionally, the handover command may further include second indication information. The second indication information can refer to the above description.
在 508中， 终端设备确定或计算与第一网络设备之间的 TA值， 具体实现方法可参见 310的相关描述。 如果终端设备可以自行确定或计算与第一网络设备之间的 TA值， 则终 端设备确定或计算与第一网络设备之间的 TA值， 并执行 509; 如果终端设备不能自行确 定或计算与第一网络设备之间的 TA值， 则终端设备使用图 2所示的接入流程接入第一网 络设备。 In 508, the terminal device determines or calculates the TA value with the first network device. For a specific implementation method, refer to the related description of 310. If the terminal device can determine or calculate the TA value with the first network device by itself, the terminal device determines or calculates the TA value with the first network device, and executes 509; if the terminal device cannot determine or calculate the TA value with the first network device by itself, A TA value between network devices, the terminal device uses the access process shown in FIG. 2 to access the first network device.
在 509中， 终端设备利用确定或者计算得到的 TA值， 向第一网络设备发送 Msg3。 Msg3 中可以包括该 TA值； 如果终端设备处于连接态， Msg3 中还可以携带终端设备的 In 509, the terminal device uses the determined or calculated TA value to send Msg3 to the first network device. Msg3 can include the TA value; if the terminal device is in the connected state, Msg3 can also carry the terminal device’s
C-RNTI。 C-RNTI.
在 510中， 处于空闲态 /非激活态的终端设备用与传输 Msg3的资源相关联的 RNTI, 检测 Msg4 , 并进行冲突解决判决， 如果通过判决， 则终端设备的随机接入成功， Msg4中 携带为第一网络设备为终端设备分配的第二 RNTI; 处于连接态的终端设备使用 C-RNTI, 检测 Msg4 , 如果检测到 Msg4 , 就表示终端设备的随机接入成功。 In 510, the terminal device in the idle state/inactive state uses the RNTI associated with the resource for transmitting Msg3, detects Msg4, and makes a conflict resolution decision. If the decision is passed, the random access of the terminal device is successful, and Msg4 carries The second RNTI allocated to the terminal device for the first network device; the terminal device in the connected state uses the C-RNTI to detect Msg4, and if Msg4 is detected, it means that the random access of the terminal device is successful.
现有技术的随机接入过程中， 由网络设备根据终端设备发送的随机接入码的接收时间 确定终端设备的 TA值，再发送给终端设备，这样需要两次信令交互终端设备才能获知 TA 值。 而在本申请实施例的技术方案中， 由终端设备根据自己所在位置与网络设备所在位置 之间的距离确定 TA值， 这样就可以省去现有技术的随机接入过程中终端设备获取 TA值 的两次信令交互， 从而提高终端设备接入网络的速度。 In the random access process in the prior art, the network device determines the TA value of the terminal device according to the receiving time of the random access code sent by the terminal device, and then sends it to the terminal device. In this way, the terminal device needs two signaling interactions to learn the TA value. value. In the technical solution of the embodiment of the present application, the terminal device determines the TA value according to the distance between its own location and the location of the network device, so that it can save the terminal device from acquiring the TA value in the random access process in the prior art. The two signaling interactions are performed, thereby increasing the speed of terminal equipment accessing the network.
下面结合图 6至图 13对本申请的装置实施例进行描述。 The device embodiments of the present application will be described below in conjunction with Figs. 6-13.
图 6是本申请实施例的终端设备的示意性结构图。 图 6所示的终端设备 600可以对应 于上文的终端设备， 如图 6所示， 终端设备 600包括发送模块 620、 处理模块 630。 Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 600 shown in FIG. 6 may correspond to the above terminal device. As shown in FIG. 6, the terminal device 600 includes a sending module 620 and a processing module 630.
处理模块 630,用于根据第一功率和 /或第一距离确定与第一网络设备之间的定时提前 TA值。 The processing module 630 is configured to determine the timing advance TA value with the first network device according to the first power and/or the first distance.
发送模块 620， 用于根据该 TA值， 在第一资源上向该第一网络设备发送第一消息。 其中， 该第一功率为来自该第一网络设备的下行信号的接收功率， 该第一距离为该终 端设备与该第一网络设备之间的距离。 The sending module 620 is configured to send a first message to the first network device on the first resource according to the TA value. Wherein, the first power is the received power of the downlink signal from the first network device, and the first distance is the terminal The distance between the end device and the first network device.
可选地， 该第一消息包括无线资源控制 RRC连接建立请求消息、 RRC连接恢复请求 消息、 RRC连接重建请求消息、 RRC重配完成消息、 该终端设备的小区无线网络临时标 识 C-RNTI中的至少一个。 Optionally, the first message includes a radio resource control RRC connection establishment request message, an RRC connection restoration request message, an RRC connection reestablishment request message, an RRC reconfiguration complete message, and the cell radio network temporary identifier C-RNTI of the terminal device. at least one.
可选地， 该发送模块 620还用于： 向该第一网络设备发送该 TA值。 Optionally, the sending module 620 is further configured to: send the TA value to the first network device.
可选地， 该第一距离是至少根据该终端设备的位置确定的； 或者该第一距离是至少根 据该第一功率确定的。 Optionally, the first distance is determined at least according to the location of the terminal device; or the first distance is determined at least according to the first power.
可选地， 该终端设备 600还包括接收模块 610， 用于接收第一指示信息， 该第一指示 信息用于指示该第一资源以及第一无线网络临时标识 RNTI, 该第一资源与该第一 RNTI 存在对应关系。 Optionally, the terminal device 600 further includes a receiving module 610, configured to receive first indication information, where the first indication information is used to indicate the first resource and the first wireless network temporary identifier RNTI, the first resource and the second A RNTI has a corresponding relationship.
可选地， 该接收模块 610还用于： 使用该 C-RNTI或该第一 RNTI从该第一网络设备 接收响应于该第一消息的第二消息。 Optionally, the receiving module 610 is further configured to: use the C-RNTI or the first RNTI to receive a second message in response to the first message from the first network device.
可选地， 该第一指示信息来自该第一网络设备； 或者该第一指示信息来自第二网络设 备， 该第二网络设备与该第一网络设备不同。 Optionally, the first indication information comes from the first network device; or the first indication information comes from a second network device, and the second network device is different from the first network device.
接收模块 610和发送模块 620可以由收发器实现。 处理模块 630可以由处理器实现。 接收模块 610、 发送模块 620和处理模块 630的具体功能和有益效果可以参见图 3至图 5 所示的方法， 在此就不再赘述。 The receiving module 610 and the sending module 620 may be implemented by a transceiver. The processing module 630 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 610, the sending module 620, and the processing module 630 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
图 7是本申请实施例的网络设备的示意性结构图。 图 7所示的网络设备 700可以对应 于上文的第二网络设备， 如图 7所示， 终端设备 700包括发送模块 720。 Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device 700 shown in FIG. 7 may correspond to the above second network device. As shown in FIG. 7, the terminal device 700 includes a sending module 720.
发送模块 720, 用于向第一网络设备发送切换请求， 该切换请求包括第三指示信息， 该第三指示信息用于指示终端设备能否确定与该第一网络设备之间的定时提前 TA值。 The sending module 720 is configured to send a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA value with the first network device .
该发送模块 720， 还用于向该终端设备发送切换命令， 该切换命令用于指示该终端设 备由该第二网络设备切换到该第一网络设备。 The sending module 720 is further configured to send a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
可选地， 该网络设备 700还包括接收模块 710， 用于从该第一网络设备接收对应于该 切换请求的响应消息， 该响应消息包括第四指示信息， 该第四指示信息用于指示由该终端 设备确定或计算该终端设备与该第一网络设备之间的 TA值。 Optionally, the network device 700 further includes a receiving module 710, configured to receive a response message corresponding to the handover request from the first network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate The terminal device determines or calculates the TA value between the terminal device and the first network device.
可选地， 该响应消息还包括第一资源以及第一无线网络临时标识 RNTI, 该第一资源 与该第一 RNTI存在对应关系。 Optionally, the response message further includes the first resource and the first radio network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
可选地， 该切换命令包括第一指示信息， 该第一指示信息用于指示该第一资源以及第 一 RNTI, 该第一资源与该第一 RNTI存在对应关系。 Optionally, the handover command includes first indication information, where the first indication information is used to indicate the first resource and the first RNTI, and the first resource and the first RNTI have a corresponding relationship.
可选地， 该发送模块 720, 还用于向该终端设备发送第三消息， 该第三消息用于请求 该终端设备反馈能否确定或计算与网络设备之间的 TA值； 和 /或该接收模块 710, 还用于 从该终端设备接收第四消息，该第四消息用于指示该终端设备能否确定或计算与网络设备 之间的 TA值。 Optionally, the sending module 720 is further configured to send a third message to the terminal device, where the third message is used to request the terminal device to feed back whether the TA value with the network device can be determined or calculated; and/or the The receiving module 710 is further configured to receive a fourth message from the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
接收模块 710和发送模块 720可以由收发器实现。 接收模块 710、 发送模块 720的具 体功能和有益效果可以参见图 3至图 5所示的方法， 在此就不再赘述。 The receiving module 710 and the sending module 720 may be implemented by a transceiver. The specific functions and beneficial effects of the receiving module 710 and the sending module 720 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
图 8是本申请另一实施例的网络设备的示意性结构图。 图 8所示的网络设备 800可以 对应于上文的第一网络设备， 如图 8所示， 终端设备 800 包括发送模块 820和处理模块 830。 接收模块 810， 用于从第二网络设备接收切换请求， 该切换请求包括第三指示信息， 该第三指示信息用于指示终端设备能否确定与该第一网络设备之间的定时提前 TA值。 FIG. 8 is a schematic structural diagram of a network device according to another embodiment of the present application. The network device 800 shown in FIG. 8 may correspond to the first network device described above. As shown in FIG. 8, the terminal device 800 includes a sending module 820 and a processing module 830. The receiving module 810 is configured to receive a handover request from a second network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA value with the first network device .
处理模块 830， 用于根据该第三指示信息， 确定该终端设备能否确定与该第一网络设 备之间的 TA值。 The processing module 830 is configured to determine whether the terminal device can determine the TA value with the first network device according to the third indication information.
可选地， 该网络设备 800还包括发送模块 820， 用于向该第二网络设备发送对应于该 切换请求的响应消息， 该响应消息包括第四指示信息， 该第四指示信息用于指示由该终端 设备确定或计算该终端设备与该第一网络设备之间的 TA值。 Optionally, the network device 800 further includes a sending module 820, configured to send a response message corresponding to the handover request to the second network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate The terminal device determines or calculates the TA value between the terminal device and the first network device.
可选地， 该响应消息还包括第一资源以及第一无线网络临时标识 RNTI, 该第一资源 与该第一 RNTI存在对应关系。 Optionally, the response message further includes the first resource and the first radio network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
可选地， 该接收模块 810还用于从该终端设备接收该 TA值。 Optionally, the receiving module 810 is further configured to receive the TA value from the terminal device.
接收模块 810和发送模块 820可以由收发器实现。 处理模块 830可以由处理器实现。 接收模块 810、 发送模块 820和处理模块 830的具体功能和有益效果可以参见图 3至图 5 所示的方法， 在此就不再赘述。 The receiving module 810 and the sending module 820 may be implemented by a transceiver. The processing module 830 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 810, the sending module 820, and the processing module 830 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
图 9是本申请另一实施例的网络设备的示意性结构图。 图 9所示的终端设备 900可以 对应于上文的第一网络设备， 如图 9所示， 终端设备 900 包括接收模块 910和发送模块 920。 Fig. 9 is a schematic structural diagram of a network device according to another embodiment of the present application. The terminal device 900 shown in FIG. 9 may correspond to the first network device described above. As shown in FIG. 9, the terminal device 900 includes a receiving module 910 and a sending module 920.
发送模块 920， 用于向该终端设备发送第二指示信息， 该第二指示信息用于指示该终 端设备确定或者计算该定时提前 TA值； The sending module 920 is configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA value;
接收模块 910， 用于从该终端设备接收该 TA值。 The receiving module 910 is configured to receive the TA value from the terminal device.
可选地， 该发送模块 920还用于： 向该终端设备发送第一指示信息， 该第一指示信息 用于指示第一资源以及第一 RNTI, 该第一资源与该第一 RNTI存在对应关系。 Optionally, the sending module 920 is further configured to: send first indication information to the terminal device, where the first indication information is used to indicate the first resource and the first RNTI, and the first resource has a corresponding relationship with the first RNTI .
可选地， 该第一指示信息承载于广播消息中。 Optionally, the first indication information is carried in a broadcast message.
接收模块 910和发送模块 920可以由收发器实现。 接收模块 910、 发送模块 920的具 体功能和有益效果可以参见图 3至图 5所示的方法， 在此就不再赘述。 The receiving module 910 and the sending module 920 may be implemented by a transceiver. The specific functions and beneficial effects of the receiving module 910 and the sending module 920 can be referred to the methods shown in FIG. 3 to FIG. 5, which will not be repeated here.
图 10是本申请另一实施例提供的终端设备的示意性结构图。 如图 10所示， 终端设备 1000可以包括收发器 1010、 处理器 1020、 存储器 1030。 FIG. 10 is a schematic structural diagram of a terminal device provided by another embodiment of the present application. As shown in FIG. 10, the terminal device 1000 may include a transceiver 1010, a processor 1020, and a memory 1030.
图 10 中仅示出了一个存储器和处理器。 在实际的终端设备产品中， 可以存在一个或 多个处理器和一个或多个存储器。 存储器也可以称为存储介质或者存储设备等。 存储器可 以是独立于处理器设置， 也可以是与处理器集成在一起， 本申请实施例对此不做限制。 Only one memory and processor are shown in Figure 10. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
收发器 1010、 处理器 1020、 存储器 1030之间通过内部连接通路互相通信， 传递控制 和 /或数据信号。 The transceiver 1010, the processor 1020, and the memory 1030 communicate with each other through internal connection paths, and transfer control and/or data signals.
具体地， 收发器 1010用于根据第一功率和 /或第一距离确定与第一网络设备之间的定 时提前 TA值； 用于根据该 TA值， 在第一资源上向该第一网络设备发送第一消息； 其中， 该第一功率为来自该第一网络设备的下行信号的接收功率， 该第一距离为该终端设备与该 第一网络设备之间的距离。 Specifically, the transceiver 1010 is configured to determine the TA value of the timing advance with the first network device according to the first power and/or the first distance; and is configured to report the TA value to the first network device on the first resource according to the TA value. Sending a first message; where the first power is the received power of the downlink signal from the first network device, and the first distance is the distance between the terminal device and the first network device.
网络设备 1000的具体工作过程和有益效果可以参见图 3至图 5所示实施例中的描述， 在此不再赘述。 For the specific working process and beneficial effects of the network device 1000, reference may be made to the description in the embodiments shown in FIG. 3 to FIG. 5, and details are not described herein again.
图 11 是本申请另一实施例提供的网络设备的示意性结构图。 图 11 所示的终端设备 1100可以对应于上文的第二网络设备，如图 11所示，网络设备 1100可以包括收发器 1110、 处理器 1120、 存储器 1130。 FIG. 11 is a schematic structural diagram of a network device provided by another embodiment of the present application. The terminal device 1100 shown in FIG. 11 may correspond to the above second network device. As shown in FIG. 11, the network device 1100 may include a transceiver 1110, A processor 1120 and a memory 1130.
图 11 中仅示出了一个存储器和处理器。 在实际的网络设备产品中， 可以存在一个或 多个处理器和一个或多个存储器。 存储器也可以称为存储介质或者存储设备等。 存储器可 以是独立于处理器设置， 也可以是与处理器集成在一起， 本申请实施例对此不做限制。 Only one memory and processor are shown in Figure 11. In actual network equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
收发器 1110、 处理器 1120、 存储器 1130之间通过内部连接通路互相通信， 传递控制 和 /或数据信号。 The transceiver 1110, the processor 1120, and the memory 1130 communicate with each other through internal connection paths, and transfer control and/or data signals.
具体地， 收发器 1110， 用于向第一网络设备发送切换请求， 该切换请求包括第三指 示信息， 该第三指示信息用于指示终端设备能否确定与该第一网络设备之间的定时提前 TA值； 用于向该终端设备发送切换命令， 该切换命令用于指示该终端设备由该第二网络 设备切换到该第一网络设备。 Specifically, the transceiver 1110 is configured to send a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing with the first network device. Advance TA value; used to send a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
网络设备 1100的具体工作过程和有益效果可以参见图 6所示实施例中的描述， 在此 不再赘述。 For the specific working process and beneficial effects of the network device 1100, reference may be made to the description in the embodiment shown in FIG. 6, which will not be repeated here.
图 12是本申请另一实施例提供的网络设备的示意性结构图。 图 12所示的终端设备 1200可以对应于上文的第一网络设备，如图 12所示，网络设备 1200可以包括收发器 1210、 处理器 1220、 存储器 1230。 FIG. 12 is a schematic structural diagram of a network device provided by another embodiment of the present application. The terminal device 1200 shown in FIG. 12 may correspond to the first network device described above. As shown in FIG. 12, the network device 1200 may include a transceiver 1210, a processor 1220, and a memory 1230.
图 12中仅示出了一个存储器和处理器。 在实际的网络设备产品中， 可以存在一个或 多个处理器和一个或多个存储器。 存储器也可以称为存储介质或者存储设备等。 存储器可 以是独立于处理器设置， 也可以是与处理器集成在一起， 本申请实施例对此不做限制。 Only one memory and processor are shown in Figure 12. In actual network equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
收发器 1210、 处理器 1220、 存储器 1230之间通过内部连接通路互相通信， 传递控制 和 /或数据信号。 The transceiver 1210, the processor 1220, and the memory 1230 communicate with each other through internal connection paths, and transfer control and/or data signals.
具体地， 收发器 1210, 用于从第二网络设备接收切换请求， 该切换请求包括第三指 示信息， 该第三指示信息用于指示终端设备能否确定与该第一网络设备之间的定时提前 TA值。 Specifically, the transceiver 1210 is configured to receive a handover request from the second network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing with the first network device. Advance TA value.
处理器 1220， 用于 4艮据该第三指示信息， 确定该终端设备能否确定与该第一网络设 备之间的 TA值。 The processor 1220 is configured to determine, according to the third indication information, whether the terminal device can determine the TA value with the first network device.
网络设备 1200的具体工作过程和有益效果可以参见图 6所示实施例中的描述， 在此 不再赘述。 For the specific working process and beneficial effects of the network device 1200, reference may be made to the description in the embodiment shown in FIG. 6, and details are not described herein again.
图 13是本申请另一实施例提供的网络设备的示意性结构图。 图 13 所示的终端设备 1300可以对应于上文的第一网络设备，如图 13所示，网络设备 1300可以包括收发器 1310、 处理器 1320、 存储器 1330。 FIG. 13 is a schematic structural diagram of a network device provided by another embodiment of the present application. The terminal device 1300 shown in FIG. 13 may correspond to the first network device described above. As shown in FIG. 13, the network device 1300 may include a transceiver 1310, a processor 1320, and a memory 1330.
图 13 中仅示出了一个存储器和处理器。 在实际的网络设备产品中， 可以存在一个或 多个处理器和一个或多个存储器。 存储器也可以称为存储介质或者存储设备等。 存储器可 以是独立于处理器设置， 也可以是与处理器集成在一起， 本申请实施例对此不做限制。 Only one memory and processor are shown in Figure 13. In actual network equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory can be set independently of the processor, or integrated with the processor, which is not limited in the embodiment of the present application.
收发器 1310、 处理器 1320、 存储器 1330之间通过内部连接通路互相通信， 传递控制 和 /或数据信号。 The transceiver 1310, the processor 1320, and the memory 1330 communicate with each other through internal connection paths, and transfer control and/or data signals.
具体地， 收发器 1310， 用于向该终端设备发送第二指示信息， 该第二指示信息用于 指示该终端设备确定或者计算该定时提前 TA值； 用于从该终端设备接收该 TA值。 Specifically, the transceiver 1310 is configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to determine or calculate the timing advance TA value; and to receive the TA value from the terminal device.
网络设备 1300的具体工作过程和有益效果可以参见图 6所示实施例中的描述， 在此 不再赘述。 本申请各实施例该的收发器也可以称为收发单元、 收发机、 收发装置等。 处理器也可 以称为处理单元， 处理单板， 处理模块、 处理装置等。 可选的， 可以将收发器中用于实现 接收功能的器件视为接收单元， 将收发器中用于实现发送功能的器件视为发送单元， 即收 发器包括接收单元和发送单元。接收单元有时也可以称为接收机、接收器、或接收电路等。 发送单元有时也可以称为发射机、 发射器或者发射电路等。 For the specific working process and beneficial effects of the network device 1300, reference may be made to the description in the embodiment shown in FIG. 6, which will not be repeated here. The transceiver in each embodiment of the present application may also be referred to as a transceiver unit, transceiver, transceiver, and so on. The processor may also be called a processing unit, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver as the sending unit, that is, the transceiver includes the receiving unit and the sending unit. The receiving unit may sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
本申请各实施例所述的存储器用于存储处理器运行所需的计算机指令和参数。 The memory described in each embodiment of the present application is used to store computer instructions and parameters required for the operation of the processor.
本申请各实施例所述的处理器可能是一种集成电路芯片， 具有信号的处理能力。 在实 现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指 令完成。 本申请各实施例所述的处理器可以是通用处理器、数字信号处理器 ( digital signal processor, DSP ) 专用集成电路 ( application specific integrated circuit, ASIC ) 现成可 编程门阵列 ( field programmable gate array, FPGA )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。 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该处理器也可以是任何常规的处理器 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译码处理器执行完成， 或 者用译码处理器中的硬件及软件模块组合执行完成。 软件模块可以位于随机存取存储器 ( random access memory, RAM ) 闪存、 只读存储器 ( read-only memory， ROM ) 可 编程只读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。 该存储 介质位于存储器， 处理器读取存储器中的指令， 结合其硬件完成上述方法的步骤。 The processor described in each embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The processor described in each embodiment of the present application may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC) ready-made programmable gate array (field programmable gate array, FPGA). ) Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory (RAM) flash memory, read-only memory (read-only memory, ROM) programmable read-only memory, or electrically erasable programmable memory, registers, and other mature storage media in the field in. The storage medium is located in the memory, and the processor reads the instructions in the memory and completes the steps of the above method in combination with its hardware.
在本申请中， 如果没有特别说明， “第 “第二” 仅用于区分同一类别的名词中 不同的个体， 而不应被理解为对名词的限定， 例如， “第一小区” 与 “第二小区” 为两个 或两类不同的小区， 除此之外并无其它限定。 但是， 对 “第一” 和 “第二” 有特别说明的 部分不适用于上述解释。 In this application, if there is no special description, "the second" is only used to distinguish different individuals in the same category of nouns, and should not be construed as a limitation on the nouns, for example, "the first cell" and "the first" "Second cell" refers to two or two different types of cells, and there are no other restrictions other than that. However, the parts with special instructions for "first" and "second" do not apply to the above interpretation.
在本申请的各种实施例中， 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。 In the various embodiments of this application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiments of this application. Any restrictions.
在上述实施例中，可以全部或部分地通过软件、硬件、 固件或者其他任意组合来实现。 当使用软件实现时， 可以全部或部分地以计算机程序产品的形式实现。 所述计算机程序产 品包括一个或多个计算机指令。 在计算机上加载和执行所述计算机程序指令时， 全部或部 分地产生按照本申请实施例所述的流程或功能。 所述计算机可以是通用计算机、 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 (例如同轴电缆、光纤、 数字用户线 ( digital subscriber line, DSL ) )或无线 (例如红外、 无线、 微波等) 方式向 另一个网站站点、 计算机、 服务器或数据中心进行传输。 所述计算机可读存储介质可以是 计算机能够存取的任何可用介质或者是包括一个或多个可用介质集成的服务器、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 如数字视频光盘 ( digital video disc, DVD ) ) 或者半导体介质 (例如固态硬盘 ( solid state disk, SSD ) )等。 In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, 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. Transmission to another website, computer, server or data center via wired (for example, coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (for example, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)).
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及 算法步骤， 能够以电子硬件、 或者计算机软件和电子硬件的结合来实现。 这些功能究竟以 硬件还是软件方式来执行， 取决于技术方案的特定应用和设计约束条件。 专业技术人员可 以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本 申请的范围。 A person of ordinary skill in the art may be aware that the units and the examples described in the embodiments disclosed herein The algorithm steps can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
所属领域的技术人员可以清楚地了解到， 为描述的方便和筒洁， 上述描述的系统、 装 置和单元的具体工作过程， 可以参考前述方法实施例中的对应过程， 在此不再赘述。 Those skilled in the art can clearly understand that, for the convenience and clarity of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.
在本申请所提供的几个实施例中， 应该理解到， 所揭露的系统、 装置和方法， 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接合或直接接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。 In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented. On the other hand, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection of devices or units through some interfaces, and may be in electrical, mechanical or other forms.
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。 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
另夕卜， 在本申请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 个单元单独物理存在， 也可以两个或两个以上单元集成在一个单元中。 In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储 在一个计算机可读取存储介质中。基于这样的理解， 本申请的技术方案本质上或者说对现 有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机 软件产品存储在一个存储介质中， 包括若千指令用以使得一台计算机设备 (可以是个人计 算机， 服务器， 或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。 而 前述的存储介质包括： U盘、 移动硬盘、 只读存储器 ( read-only memory， ROM ) 、 随机 存耳又存储器 ( random access memory, RAM ) 、 磁碟或者光盘等各种可以存储程序代码的 介质。 If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including If a thousand instructions are used to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk, etc., which can store program code medium.
以上所述， 仅为本申请的具体实施方式， 但本申请的保护范围并不局限于此， 任何熟 悉本技术领域的技术人员在本申请揭露的技术范围内， 可轻易想到变化或替换， 都应涵盖 在本申请的保护范围之内。 因此， 本申请的保护范围应以所述权利要求的保护范围为准。 The above are only specific implementations of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

权 利 要 求 书 Claims
1、 一种通信方法， 其特征在于， 所述方法包括： 1. A communication method, characterized in that the method includes:
终端设备根据第一功率和成第一距离确定与第一网络设备之间的定时提前 TA值； 所述终端设备根据所述 TA值， 在第一资源上向所述第一网络设备发送第一消息； 其中， 所述第一功率为来自所述第一网络设备的下行信号的接收功率， 所述第一距离 为所述终端设备与所述第一网络设备之间的距离。 The terminal device determines the timing advance TA value with the first network device according to the first power and the first distance; the terminal device sends the first network device to the first network device on the first resource according to the TA value. Message; wherein, the first power is the received power of the downlink signal from the first network device, and the first distance is the distance between the terminal device and the first network device.
2、 根据权利要求 1所述的方法， 其特征在于， 所述第一消息包括无线资源控制 RRC 连接建立请求消息、 RRC连接恢复请求消息、 RRC连接重建请求消息、 RRC重配完成消 息、 所述终端设备的小区无线网络临时标识 C-RNTI中的至少一个。 2. The method according to claim 1, wherein the first message includes a radio resource control RRC connection establishment request message, an RRC connection recovery request message, an RRC connection reestablishment request message, an RRC reconfiguration complete message, and the At least one of the C-RNTI temporary identifiers of the cell radio network of the terminal device.
3、 根据权利要求 1或 2所述的方法， 其特征在于， 所述方法还包括： 3. The method according to claim 1 or 2, wherein the method further comprises:
所述终端设备向所述第一网络设备发送所述 TA值。 The terminal device sends the TA value to the first network device.
4、 根据权利要求 1至 3中任一项所述的方法， 其特征在于， 4. The method according to any one of claims 1 to 3, characterized in that:
所述第一距离是至少根据所述终端设备的位置确定的； 或者 The first distance is determined at least according to the location of the terminal device; or
所述第一距离是至少根据所述第一功率确定的。 The first distance is determined based on at least the first power.
5、 根据权利要求 1至 4中任一项所述的方法， 其特征在于， 所述方法还包括： 所述终端设备接收第一指示信息，所述第一指示信息用于指示所述第一资源以及第一 无线网络临时标识 RNTI, 所述第一资源与所述第一 RNTI存在对应关系。 5. The method according to any one of claims 1 to 4, wherein the method further comprises: receiving, by the terminal device, first indication information, the first indication information being used to indicate the first indication information A resource and a first wireless network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
6、 根据权利要求 5所述的方法， 其特征在于， 所述方法还包括： 6. The method according to claim 5, wherein the method further comprises:
所述终端设备使用所述 C-RNTI或所述第一 RNTI从所述第一网络设备接收响应于所 述第一消息的第二消息。 The terminal device uses the C-RNTI or the first RNTI to receive a second message in response to the first message from the first network device.
7、 根据权利要求 5或 6所述的方法， 其特征在于， 7. The method according to claim 5 or 6, characterized in that:
所述第一指示信息来自所述第一网络设备； 或者 The first indication information comes from the first network device; or
所述第一指示信息来自第二网络设备， 所述第二网络设备与所述第一网络设备不同。 The first indication information comes from a second network device, and the second network device is different from the first network device.
8、 一种通信方法， 其特征在于， 所述方法包括： 8. A communication method, characterized in that the method includes:
第二网络设备向第一网络设备发送切换请求， 所述切换请求包括第三指示信息， 所述 第三指示信息用于指示终端设备能否确定与所述第一网络设备之间的定时提前 TA值； 所述第二网络设备向所述终端设备发送切换命令，所述切换命令用于指示所述终端设 备由所述第二网络设备切换到所述第一网络设备。 The second network device sends a handover request to the first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA with the first network device. Value; the second network device sends a switching command to the terminal device, the switching command is used to instruct the terminal device to switch from the second network device to the first network device.
9、 根据权利要求 8所述的方法， 其特征在于， 所述方法还包括： 9. The method according to claim 8, wherein the method further comprises:
所述第二网络设备从所述第一网络设备接收对应于所述切换请求的响应消息，所述响 应消息包括第四指示信息，所述第四指示信息用于指示由所述终端设备确定或计算所述终 端设备与所述第一网络设备之间的 TA值。 The second network device receives a response message corresponding to the handover request from the first network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate that the terminal device determines or Calculate the TA value between the terminal device and the first network device.
10、 根据权利要求 9所述的方法， 其特征在于， 所述响应消息还包括第一资源以及第 一无线网络临时标识 RNTI, 所述第一资源与所述第一 RNTI存在对应关系。 10. The method according to claim 9, wherein the response message further comprises a first resource and a first wireless network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
11、 根据权利要求 8至 10中任一项所述的方法， 其特征在于， 所述切换命令包括第 一指示信息， 所述第一指示信息用于指示所述第一资源以及第一 RNTI, 所述第一资源与 所述第一 RNTI存在对应关系。 11. The method according to any one of claims 8 to 10, wherein the handover command includes first indication information, and the first indication information is used to indicate the first resource and the first RNTI, There is a correspondence between the first resource and the first RNTI.
12、 根据权利要求 8至 11中任一项所述的方法， 其特征在于， 所述方法还包括： 所述第二网络设备向所述终端设备发送第三消息，所述第三消息用于请求所述终端设 备反馈能否确定或计算与网络设备之间的 TA值； 和成 12. The method according to any one of claims 8 to 11, wherein the method further comprises: sending, by the second network device, a third message to the terminal device, the third message being used for Request the terminal device to feedback whether the TA value with the network device can be determined or calculated; and become
所述第二网络设备从所述终端设备接收第四消息，所述第四消息用于指示所述终端设 备能否确定或计算与网络设备之间的 TA值。 The second network device receives a fourth message from the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
13、 一种通信方法， 其特征在于， 所述方法包括： 13. A communication method, characterized in that the method includes:
第一网络设备从第二网络设备接收切换请求， 所述切换请求包括第三指示信息， 所述 第三指示信息用于指示终端设备能否确定与所述第一网络设备之间的定时提前 TA值； 所述第一网络设备根据所述第三指示信息，确定所述终端设备能否确定与所述第一网 络设备之间的 TA值。 The first network device receives a handover request from the second network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA with the first network device. Value; the first network device determines whether the terminal device can determine the TA value with the first network device according to the third indication information.
14、 根据权利要求 13所述的方法， 其特征在于， 所述方法还包括： 14. The method according to claim 13, wherein the method further comprises:
所述第一网络设备向所述第二网络设备发送对应于所述切换请求的响应消息，所述响 应消息包括第四指示信息，所述第四指示信息用于指示由所述终端设备确定或计算所述终 端设备与所述第一网络设备之间的 TA值。 The first network device sends a response message corresponding to the handover request to the second network device, where the response message includes fourth indication information, and the fourth indication information is used to indicate that the terminal device determines or Calculate the TA value between the terminal device and the first network device.
15、 根据权利要求 14所述的方法， 其特征在于， 所述响应消息还包括第一资源以及 第一无线网络临时标识 RNTI, 所述第一资源与所述第一 RNTI存在对应关系。 15. The method according to claim 14, wherein the response message further includes a first resource and a first wireless network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
16、 根据权利要求 13至 15中任一项所述的方法， 其特征在于， 所述方法还包括： 所述第一网络设备从所述终端设备接收所述 TA值。 16. The method according to any one of claims 13 to 15, wherein the method further comprises: receiving, by the first network device, the TA value from the terminal device.
17、 一种通信装置， 其特征在于， 所述通信装置包括： 17. A communication device, characterized in that the communication device includes:
处理模块， 用于根据第一功率和成第一距离确定与第一网络设备之间的定时提前 TA 值； A processing module, configured to determine the timing advance TA value with the first network device according to the first power and the first distance;
发送模块， 用于根据所述 TA值， 在第一资源上向所述第一网络设备发送第一消息； 其中， 所述第一功率为来自所述第一网络设备的下行信号的接收功率， 所述第一距离 为所述通信装置与所述第一网络设备之间的距离。 A sending module, configured to send a first message to the first network device on a first resource according to the TA value; where the first power is the received power of a downlink signal from the first network device, The first distance is the distance between the communication device and the first network device.
18、 根据权利要求 17所述的通信装置， 其特征在于， 所述第一消息包括无线资源控 制 RRC连接建立请求消息、 RRC连接恢复请求消息、 RRC连接重建请求消息、 RRC重 配完成消息、 所述通信装置的小区无线网络临时标识 C-RNTI中的至少一个。 18. The communication device according to claim 17, wherein the first message includes a radio resource control RRC connection establishment request message, an RRC connection recovery request message, an RRC connection reestablishment request message, an RRC reconfiguration complete message, and At least one of the C-RNTI temporary identifiers of the cell radio network of the communication device.
19、 根据权利要求 17或 18所述的通信装置， 其特征在于， 所述发送模块还用于： 向所述第一网络设备发送所述 TA值。 19. The communication device according to claim 17 or 18, wherein the sending module is further configured to: send the TA value to the first network device.
20、 根据权利要求 17至 19中任一项所述的通信装置， 其特征在于， 20. The communication device according to any one of claims 17 to 19, characterized in that:
所述第一距离是至少根据所述通信装置的位置确定的； 或者 The first distance is determined at least according to the location of the communication device; or
所述第一距离是至少根据所述第一功率确定的。 The first distance is determined based on at least the first power.
21、 根据权利要求 17至 20中任一项所述的通信装置， 其特征在于， 所述通信装置还 包括： 21. The communication device according to any one of claims 17 to 20, wherein the communication device further comprises:
接收模块， 用于接收第一指示信息， 所述第一指示信息用于指示所述第一资源以及第 一无线网络临时标识 RNTI, 所述第一资源与所述第一 RNTI存在对应关系。 A receiving module, configured to receive first indication information, where the first indication information is used to indicate the first resource and a first wireless network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
22、 根据权利要求 21所述的通信装置， 其特征在于， 所述接收模块还用于： 使用所述 C-RNTI或所述第一 RNTI从所述第一网络设备接收响应于所述第一消息的 第二消息。 22. The communication device according to claim 21, wherein the receiving module is further configured to: use the C-RNTI or the first RNTI to receive from the first network device a response to the first The second message of the message.
23、 根据权利要求 21或 22所述的通信装置， 其特征在于， 23. The communication device according to claim 21 or 22, characterized in that:
所述第一指示信息来自所述第一网络设备； 或者 The first indication information comes from the first network device; or
所述第一指示信息来自第二网络设备， 所述第二网络设备与所述第一网络设备不同。 The first indication information comes from a second network device, and the second network device is different from the first network device.
24、 一种通信装置， 其特征在于， 所述通信装置包括： 24. A communication device, wherein the communication device includes:
发送模块， 用于向第一网络设备发送切换请求， 所述切换请求包括第三指示信息， 所 述第三指示信息用于指示终端设备能否确定与所述第一网络设备之间的定时提前 TA值； 所述发送模块， 还用于向所述终端设备发送切换命令， 所述切换命令用于指示所述终 端设备由所述通信装置切换到所述第一网络设备。 A sending module, configured to send a handover request to a first network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance with the first network device TA value; the sending module is further configured to send a handover command to the terminal device, where the handover command is used to instruct the terminal device to switch from the communication apparatus to the first network device.
25、 根据权利要求 24所述的通信装置， 其特征在于， 所述通信装置还包括： 接收模块， 用于从所述第一网络设备接收对应于所述切换请求的响应消息， 所述响应 消息包括第四指示信息，所述第四指示信息用于指示由所述终端设备确定或计算所述终端 设备与所述第一网络设备之间的 TA值。 25. The communication device according to claim 24, wherein the communication device further comprises: a receiving module, configured to receive a response message corresponding to the handover request from the first network device, the response message The fourth indication information is included, and the fourth indication information is used to indicate that the terminal device determines or calculates the TA value between the terminal device and the first network device.
26、 根据权利要求 25所述的通信装置， 其特征在于， 所述响应消息还包括第一资源 以及第一无线网络临时标识 RNTI, 所述第一资源与所述第一 RNTI存在对应关系。 26. The communication device according to claim 25, wherein the response message further includes a first resource and a first wireless network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
27、 根据权利要求 24至 26中任一项所述的通信装置， 其特征在于， 所述切换命令包 括第一指示信息， 所述第一指示信息用于指示所述第一资源以及第一 RNTI, 所述第一资 源与所述第一 RNTI存在对应关系。 27. The communication device according to any one of claims 24 to 26, wherein the handover command includes first indication information, and the first indication information is used to indicate the first resource and the first RNTI There is a correspondence between the first resource and the first RNTI.
28、 根据权利要求 24至 27中任一项所述的通信装置， 其特征在于， 28. The communication device according to any one of claims 24 to 27, characterized in that:
所述发送模块， 还用于向所述终端设备发送第三消息， 所述第三消息用于请求所述终 端设备反馈能否确定或计算与网络设备之间的 TA值； 和成 The sending module is further configured to send a third message to the terminal device, where the third message is used to request the terminal device to feedback whether the TA value with the network device can be determined or calculated; and
所述接收模块， 还用于从所述终端设备接收第四消息， 所述第四消息用于指示所述终 端设备能否确定或计算与网络设备之间的 TA值。 The receiving module is further configured to receive a fourth message from the terminal device, where the fourth message is used to indicate whether the terminal device can determine or calculate the TA value with the network device.
29、 一种通信装置， 其特征在于， 所述通信装置包括： 29. A communication device, characterized in that the communication device includes:
接收模块， 用于从第二网络设备接收切换请求， 所述切换请求包括第三指示信息， 所 述第三指示信息用于指示终端设备能否确定与所述通信装置之间的定时提前 TA值； 处理模块， 用于 4艮据所述第三指示信息， 确定所述终端设备能否确定与所述通信装置 之间的 TA值。 A receiving module, configured to receive a handover request from a second network device, where the handover request includes third indication information, and the third indication information is used to indicate whether the terminal device can determine the timing advance TA value with the communication device A processing module, configured to determine whether the terminal device can determine the TA value with the communication apparatus according to the third indication information.
30、 根据权利要求 29所述的通信装置， 其特征在于， 所述通信装置还包括： 发送模块， 用于向所述第二网络设备发送对应于所述切换请求的响应消息， 所述响应 消息包括第四指示信息，所述第四指示信息用于指示由所述终端设备确定或计算所述终端 设备与所述通信装置之间的 TA值。 30. The communication device according to claim 29, wherein the communication device further comprises: a sending module, configured to send a response message corresponding to the handover request to the second network device, the response message The fourth indication information is included, and the fourth indication information is used to indicate that the terminal device determines or calculates the TA value between the terminal device and the communication apparatus.
31、 根据权利要求 30所述的通信装置， 其特征在于， 所述响应消息还包括第一资源 以及第一无线网络临时标识 RNTI, 所述第一资源与所述第一 RNTI存在对应关系。 31. The communication device according to claim 30, wherein the response message further includes a first resource and a first wireless network temporary identifier RNTI, and the first resource has a corresponding relationship with the first RNTI.
32、 根据权利要求 29至 31中任一项所述的通信装置， 其特征在于， 所述接收模块还 用于从所述终端设备接收所述 TA值。 32. The communication device according to any one of claims 29 to 31, wherein the receiving module is further configured to receive the TA value from the terminal device.
33、 一种计算机可读存储介质， 其特征在于， 所述存储介质中存储有计算机程序或指 令， 当所述计算机程序或指令被通信装置执行时， 实现如权利要求 1至 7中任一项所述的 方法， 或者实现如权利要求 8至 12中任一项所述的方法， 或者实现如权利要求 13至 16 中任一项所述的方法。 33. A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, it implements any one of claims 1 to 7 The method either implements the method according to any one of claims 8 to 12, or implements the method according to any one of claims 13 to 16.
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