WO2019128947A1 - 通信方法和通信设备 - Google Patents

通信方法和通信设备 Download PDF

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Publication number
WO2019128947A1
WO2019128947A1 PCT/CN2018/123282 CN2018123282W WO2019128947A1 WO 2019128947 A1 WO2019128947 A1 WO 2019128947A1 CN 2018123282 W CN2018123282 W CN 2018123282W WO 2019128947 A1 WO2019128947 A1 WO 2019128947A1
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WIPO (PCT)
Prior art keywords
information
terminal device
forwarding
data
forwarding device
Prior art date
Application number
PCT/CN2018/123282
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English (en)
French (fr)
Inventor
黄亚达
曾清海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18894388.0A priority Critical patent/EP3716689A4/en
Publication of WO2019128947A1 publication Critical patent/WO2019128947A1/zh
Priority to US16/913,683 priority patent/US11297557B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/20—Communication route or path selection, e.g. power-based or shortest path routing based on geographic position or location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present application relates to the field of communications and, more particularly, to communication methods and communication devices.
  • the terminal device #A needs to transmit a data packet to the terminal device #B through the mobile network
  • the terminal device #A needs to send the data packet to the mobile network for the terminal device #A.
  • the serving access network device #A the access network device #A sends the data packet to the server via the core network device #A
  • the server obtains the destination address of the data packet from the IP layer of the data packet (for indicating the terminal device #B)
  • the data packet may be sent to the core network device #B of the terminal device #B according to the destination address
  • the core network device #B may send the data packet to the service for the terminal device #B.
  • the network access device #B so that the access network device #B can send the data packet to the terminal device #B.
  • the present application provides a communication method and a communication device capable of reducing transmission delay.
  • a communication method including: a first forwarding device in a mobile network receives a first data packet, the first data packet carries first data from a first terminal device, and the first data
  • the packet includes a target field, where the information carried in the target field is used to determine target information, where the target information includes information of at least one second terminal device or information of the first region, where the second terminal device needs to send the first data.
  • the terminal device to the first area, where the first data needs to be broadcasted; the first forwarding device sends a second data packet according to the target information, where the second data packet carries the first data.
  • the first forwarding device can obtain the information of the terminal device or the area to which the first data needs to be sent from the data packet carrying the first data, and the first data can be based on the information. Sending to the terminal device or area, so that the first forwarding device does not need to send the first data to a device such as a server for implementing the routing addressing function, thereby reducing the transmission delay.
  • the target field is located in a protocol data unit PDU of the first protocol layer corresponding to the first data packet, where the first protocol layer includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, and a media access control MAC layer. At least one of the layers.
  • the forwarding device only needs to parse the data packet in layer 2, so that the information carried by the target field can be obtained, and the routing information such as the IP address of the data packet is obtained from the layer 3 of the data packet, and the forwarding device does not need to be in the forwarding device.
  • Configuring the parsing entity for layer 3 can reduce the processing load of the forwarding device and improve the compatibility and practicability of the present application.
  • the target field carries the target information.
  • the method further includes: determining, by the first forwarding device, the target information according to the information of the first terminal device.
  • the information of the first terminal device includes at least one of the context information of the first terminal device, the location information of the first terminal device, and the cell information of the cell in which the first terminal device is located.
  • the information of the first terminal device includes the identifier information of the first terminal device.
  • the information about the first terminal device includes indication information of the bearer corresponding to the first terminal device.
  • the method further includes: the first forwarding device acquires mapping relationship information, where the mapping relationship information is used to indicate a correspondence between the information of the at least one terminal device and the at least one routing information, and the first forwarding device is configured according to the Determining the target information by the information of the first terminal device includes: determining, by the first forwarding device, the routing information corresponding to the information of the first terminal device indicated by the mapping relationship as the target information.
  • the target information is determined according to the information of the first terminal device, and the terminal device can be configured to eliminate the need to add the target information to the data packet.
  • the process of the present application is completed, whereby the processing load of the terminal device can be reduced, and the compatibility and practicability of the present application can be improved.
  • the information of the second terminal device includes a device identifier of the second terminal device or a group identifier of the terminal device group to which the second terminal device belongs.
  • the information of the first area includes mobile network information of the first area or geographic location information of the first area.
  • the first forwarding device when the first forwarding device is capable of communicating with the second terminal device, the first forwarding device sends the second data packet according to the target information, including: the first forwarding device according to the target information, to the first The second terminal device sends the second data packet.
  • the first forwarding device when the coverage of the second forwarding device includes the first area, sends the second data packet according to the target information, including: the first forwarding device according to the target information, to the first An area broadcasts the second data packet.
  • the first forwarding device when the first forwarding device is incapable of communicating with the second terminal device, or the coverage of the second forwarding device includes the first area, the first forwarding device sends the second data packet according to the target information, The first forwarding device sends the second data packet to the second forwarding device in the mobile network according to the target information, where the second forwarding device can communicate with the second terminal device, or the second forwarding device The coverage includes the first area.
  • the method before the first forwarding device sends the second data packet to the second forwarding device, the method further includes:
  • the first forwarding device encapsulates the quality of service QoS information corresponding to the first data and/or the sending time information of the first data into the second data packet.
  • the second forwarding device can determine the QOS information and the transmission time information corresponding to the first data from the second data packet, and send the first data according to the QOS information and the sending time information, thereby satisfying the first data.
  • the QOS and delivery time requirements can improve the user experience.
  • the method further includes: determining, by the first forwarding device, the forwarding device that is configured by the configuration information to serve the second terminal device as the first And a second forwarding device, wherein the configuration information is used to indicate a terminal device served by each of the plurality of forwarding devices, including the second forwarding device.
  • the method further includes: determining, by the first forwarding device, that the coverage indicated by the configuration information includes the forwarding device of the first region is the first And a second forwarding device, where the configuration information is used to indicate an area covered by each of the plurality of forwarding devices, including the second forwarding device.
  • the configuration information is obtained by the first forwarding device from the control device, where the configuration information is determined by the control device according to status information reported by each of the plurality of forwarding devices, where each forwarding The status information reported by the device is used to indicate the terminal device served by the forwarding device or the area covered by the forwarding device.
  • the first forwarding device can be easily determined based on the target information to determine the second forwarding device, and the utility and reliability of the present application can be further improved.
  • the first forwarding device is configured with multiple ports, wherein each port is used for communication between the first forwarding device and the at least one forwarding device, and the first forwarding device performs, according to the target information,
  • the second forwarding device in the mobile network sends the second data packet, where the first forwarding device determines the first port from the multiple ports according to the target information, where the first port is the first forwarding device and The communication between the second forwarding device; the first forwarding device sends the second data packet to the second forwarding device through the first port.
  • the second forwarding device includes an access network device or a core network device that is in communication with the second terminal device, or the second forwarding device includes an access network device or a core network device that is located in the first area.
  • the first forwarding device comprises an access network device or a core network device communicatively connected to the first terminal device.
  • a second aspect provides a communication method, including: a first terminal device generates a first data packet, where the first data packet carries first data, and the first data packet includes a target field, where the target field is included The information about the bearer is used to determine the target information, where the target information includes information of the at least one second terminal device or the information of the first area, where the second terminal device is the terminal device to which the first data needs to be sent, the first area The area to which the first data needs to be broadcasted; the first terminal device transmits the first data packet to the first forwarding device in the mobile network.
  • the information carried in the target field can be used to determine the second terminal device or the first region to which the first data needs to be sent, thereby enabling
  • the forwarding device can send the data in the data packet to the second terminal device or the first area based on the target information, so that the forwarding device does not need to send the data to a device such as a server for implementing a routing addressing function, Thereby, the transmission delay can be reduced.
  • the target field is located in a protocol data unit PDU of the first protocol layer corresponding to the first data packet, where the first protocol layer includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, and a media access control MAC. At least one layer in the layer.
  • the target field carries the target information.
  • the information carried in the target field is empty or a preset preset value, where the target information is determined by the first forwarding device according to the information of the first terminal device, where the information of the first terminal device includes the first At least one of the context information of the terminal device, the location information of the first terminal device, and the cell information of the cell in which the first terminal device is located.
  • the information of the second terminal device includes a device identifier of the second terminal device or a group identifier of the terminal device group to which the second terminal device belongs.
  • the information of the first area includes mobile network information of the first area or geographic location information of the first area.
  • a third aspect provides a communication method, including: when a first forwarding device in a mobile network receives a first data packet carrying first data from a first terminal device, according to information of the first terminal device Determining target information, the target information is used to indicate at least one second terminal device, or the target information is used to indicate at least one first area, where the second terminal device is a terminal device to which the first data needs to be sent, An area to which the first data needs to be broadcasted; the first forwarding device sends a second data packet according to the target information, where the second data packet carries the first data.
  • the first forwarding device can enable the first forwarding device to obtain the first data by using the information of the terminal device or the area to which the first data needs to be sent according to the information of the first terminal device. Sending to the terminal device or area, so that the first forwarding device does not need to send the first data to a device such as a server for implementing the routing addressing function, thereby reducing the transmission delay.
  • the information of the first terminal device includes at least one of the context information of the first terminal device, the location information of the first terminal device, and the cell information of the cell in which the first terminal device is located.
  • the information of the first terminal device includes the identifier information of the first terminal device.
  • the information about the first terminal device includes indication information of the bearer corresponding to the first terminal device.
  • the method further includes: the first forwarding device acquires mapping relationship information, where the mapping relationship information is used to indicate a correspondence between the information of the at least one terminal device and the at least one routing information, and the first forwarding device is configured according to the Determining the target information by the information of the first terminal device includes: determining, by the first forwarding device, the routing information corresponding to the information of the first terminal device indicated by the mapping relationship as the target information.
  • the information of the second terminal device includes a device identifier of the second terminal device or a group identifier of the terminal device group to which the second terminal device belongs.
  • the information of the first area includes mobile network information of the first area or geographic location information of the first area.
  • the first forwarding device when the first forwarding device is capable of communicating with the second terminal device, the first forwarding device sends the second data packet according to the target information, including: the first forwarding device according to the target information, to the first The second terminal device sends the second data packet.
  • the first forwarding device when the coverage of the second forwarding device includes the first area, sends the second data packet according to the target information, including: the first forwarding device according to the target information, to the first An area broadcasts the second data packet.
  • the first forwarding device when the first forwarding device is incapable of communicating with the second terminal device, or the coverage of the second forwarding device includes the first area, the first forwarding device sends the second data packet according to the target information, The first forwarding device sends the second data packet to the second forwarding device in the mobile network according to the target information, where the second forwarding device can communicate with the second terminal device, or the second forwarding device The coverage includes the first area.
  • the method before the first forwarding device sends the second data packet to the second forwarding device, the method further includes:
  • the first forwarding device encapsulates the quality of service QoS information corresponding to the first data and/or the sending time information of the first data into the second data packet.
  • the second forwarding device can determine the QOS information and the transmission time information corresponding to the first data from the second data packet, and send the first data according to the QOS information and the sending time information, thereby satisfying the first data.
  • the QOS and delivery time requirements can improve the user experience.
  • the method further includes: determining, by the first forwarding device, the forwarding device that is configured by the configuration information to serve the second terminal device as the first And a second forwarding device, wherein the configuration information is used to indicate a terminal device served by each of the plurality of forwarding devices, including the second forwarding device.
  • the method further includes: determining, by the first forwarding device, that the coverage indicated by the configuration information includes the forwarding device of the first region is the first And a second forwarding device, where the configuration information is used to indicate an area covered by each of the plurality of forwarding devices, including the second forwarding device.
  • the configuration information is obtained by the first forwarding device from the control device, where the configuration information is determined by the control device according to status information reported by each of the plurality of forwarding devices, where each forwarding The status information reported by the device is used to indicate the terminal device served by the forwarding device or the area covered by the forwarding device.
  • the first forwarding device can be easily determined based on the target information to determine the second forwarding device, and the utility and reliability of the present application can be further improved.
  • the first forwarding device is configured with multiple ports, wherein each port is used for communication between the first forwarding device and the at least one forwarding device, and the first forwarding device performs, according to the target information,
  • the second forwarding device in the mobile network sends the second data packet, where the first forwarding device determines the first port from the multiple ports according to the target information, where the first port is the first forwarding device and The communication between the second forwarding device; the first forwarding device sends the second data packet to the second forwarding device through the first port.
  • the second forwarding device includes an access network device or a core network device that is in communication with the second terminal device, or the second forwarding device includes an access network device or a core network device that is located in the first area.
  • the first forwarding device comprises an access network device or a core network device communicatively connected to the first terminal device.
  • a communication apparatus comprising means for performing the steps of the communication method of the first or third aspect and its implementations described above.
  • the communication device is a communication chip
  • the communication chip may include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.
  • the communication device is a mobile network device (eg, a core network device or an access network device, etc.), and the communication chip may include a transmitter for transmitting information or data, and for receiving information or data. Receiver.
  • a communication apparatus comprising means for performing the steps of the communication method of the second aspect and the implementations of the second aspect.
  • the communication device is a communication chip
  • the communication chip may include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.
  • the communication device is a terminal device
  • the communication chip may include a transmitter for transmitting information or data, and a receiver for receiving information or data.
  • a forwarding device comprising: a processor, a memory for storing a computer program, the processor for calling and running the computer program from the memory, such that the communication device performs the first or third Aspects and communication methods in various possible implementations.
  • the processor is one or more, and the memory is one or more.
  • the memory may be integrated with the processor or the memory may be separate from the processor.
  • the forwarding device further includes a transmitter (transmitter) and a receiver (receiver).
  • a terminal device comprising: a processor, a memory for storing a computer program, the processor for calling and running the computer program from a memory, such that the communication device performs the second aspect and Communication methods in various implementations.
  • the processor is one or more, and the memory is one or more.
  • the memory may be integrated with the processor or the memory may be separate from the processor.
  • the terminal device further includes a transmitter (transmitter) and a receiver (receiver).
  • a communication system the above terminal device and a forwarding device are provided.
  • a computer program product comprising: a computer program (which may also be referred to as a code, or an instruction) that, when executed, causes the computer to perform the first aspect to the first A method in any of the three possible implementations.
  • a computer readable medium storing a computer program (which may also be referred to as a code, or an instruction), when executed on a computer, causes the computer to perform the first aspect to the first A method in any of the three possible implementations.
  • a computer program which may also be referred to as a code, or an instruction
  • a chip system comprising a memory and a processor for storing a computer program for calling and running the computer program from the memory such that the communication device on which the chip system is installed performs The method of any one of the first aspect to the third aspect described above.
  • the chip system may include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.
  • a communication system comprising the above terminal device and/or forwarding device.
  • the communication system may further include other devices that interact with the terminal device or the forwarding device in the solution provided by the embodiment of the present application.
  • the first forwarding device can enable the first forwarding device to obtain the first data by using the information of the terminal device or the area to which the first data needs to be sent according to the information of the first terminal device. Sending to the terminal device or area, so that the first forwarding device does not need to send the first data to a device such as a server for implementing the routing addressing function, thereby reducing the transmission delay.
  • FIG. 1 is a schematic diagram showing an example of an arrangement of a forwarding device of the present application.
  • FIG. 2 is a schematic diagram of another example of a configuration of a forwarding device of the present application.
  • FIG. 3 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 4 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 5 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 6 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 7 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 8 is a schematic diagram showing an example of a configuration of a mobile network of the present application.
  • FIG. 9 is a meaning interaction diagram of an example of a communication method of the present application.
  • FIG. 10 is a schematic diagram of an example of a PDU having a target field of the present application.
  • 11 is a meaning interaction diagram of another example of the communication method of the present application.
  • FIG. 12 is a schematic diagram showing an example of an arrangement manner of an access network device and a core network device according to the present application.
  • FIG. 13 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 14 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • FIG. 15 is a schematic diagram showing still another example of the arrangement of the forwarding device of the present application.
  • Fig. 16 is a schematic diagram showing still another example of the configuration of the mobile network of the present application.
  • Fig. 17 is a diagram showing a meaning interaction of still another example of the communication method of the present application.
  • FIG. 18 is a schematic diagram showing still another example of the configuration of the mobile network of the present application.
  • Fig. 19 is a schematic diagram showing still another example of the configuration of the mobile network of the present application.
  • Fig. 20 is a schematic diagram showing still another example of the configuration of the mobile network of the present application.
  • Fig. 21 is a diagram showing a meaning interaction of still another example of the communication method of the present application.
  • Fig. 22 is a schematic block diagram showing an example of a communication device according to an embodiment of the present application.
  • Fig. 23 is a schematic configuration of an example of a communication device according to an embodiment of the present application.
  • Fig. 24 is a schematic block diagram showing another example of the communication device of the embodiment of the present application.
  • Fig. 25 is a schematic configuration of an example of a communication device according to an embodiment of the present application.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and a computing device can be a component.
  • One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • V2V Vehicle to Vehicle
  • V2I Vehicle to Infrastructure
  • V2P Vehicle to Pedestrian
  • V2N Vehicle to Network
  • the terminal device may also be referred to as a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, and a remote station.
  • UE user equipment
  • the terminal device can be a station in the WLAN (STAION, ST), which can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, and a personal digital processing.
  • WLAN STAION, ST
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • handheld device with wireless communication capabilities computing device or other processing device connected to a wireless modem
  • in-vehicle device car networking terminal
  • computer laptop
  • handheld communication device handheld Computing devices
  • satellite wireless devices wireless modem cards
  • STBs set top boxes
  • CPE customer premise equipment
  • next generation communication systems For example, a terminal device in a 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network.
  • PLMN Public Land Mobile Network
  • the terminal device may also be a wearable device.
  • a wearable device which can also be called a wearable smart device, is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various smart bracelets for smart signs monitoring, smart jewelry, etc.
  • the terminal device may also be a terminal device in an Internet of Things (IoT) system, and the IoT is an important component of future information technology development, and its main technical feature is to pass the article through the communication technology. Connected to the network to realize an intelligent network of human-machine interconnection and physical interconnection.
  • IoT Internet of Things
  • the embodiments of the present application describe various embodiments in conjunction with a forwarding device.
  • the forwarding device may be an entity or a module having a forwarding function, and then the function of the forwarding device is described in detail in conjunction with the process of data transmission.
  • the forwarding device is configured in the mobile network, that is, the forwarding device may be a network element in the mobile network, or the forwarding device may be A functional module on a network element in a mobile network.
  • the forwarding device can be configured in any of the following ways.
  • the forwarding device may be configured or itself an access network device, or the access network device may have the function of the forwarding device of the present application, and may perform the action of the forwarding device.
  • the access network consists of a series of transport entities (such as line devices and transmission facilities) between a Service Network Interface (SNI) and a user network interface (UNI).
  • SNI Service Network Interface
  • UNI user network interface
  • the implementation system that provides the required transport bearer capability for the provision of telecommunication services can be configured and managed via the management interface (Q3).
  • Q3 management interface
  • the access network does not interpret signaling.
  • the access network can be regarded as a transport network that is independent of services and applications, and mainly performs cross-connection, multiplexing, and transmission functions.
  • the access network device may include an access network/Radio Access Network (RAN) device, a network composed of multiple 5G-RAN nodes, and the 5G-RAN node may be: an access point (AP). ), next-generation new base station (NR nodeB, gNB), next-generation evolved base station (ng-eNB, gNB), transmission receive point (TRP), transmission point (TP) or some other access node.
  • RAN Radio Access Network
  • AP access point
  • NR nodeB next-generation new base station
  • ng-eNB next-generation evolved base station
  • TRP transmission receive point
  • TP transmission point
  • the 5G-RAN node can be further divided into a central unit (CU) and a distributed unit (DU).
  • the access network device may be a Base Transceiver Station (BTS) in the SM or CDMA, a base station (NodeB, NB) in the WCDMA, or an Evolutionary Node B in the LTE.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutionary Node B Evolutionary Node B in the LTE.
  • the eNB or the eNodeB), or the relay station or the access point, or the in-vehicle device, the wearable device, and the access network device in the future 5G network or the access network device in the future evolved PLMN network, etc., are not specifically limited herein.
  • the access network device may provide a service for the cell, and the terminal device performs the transmission resource (for example, the frequency domain resource, or the spectrum resource) used by the cell with the access network device.
  • the cell may be a cell corresponding to an access network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell, where the small cell may include a metro cell. , micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • multiple carriers can work at the same frequency on the carrier in the LTE system or the 5G system.
  • the concept of the carrier and the cell can be considered to be equivalent.
  • CA carrier aggregation
  • the concept of the carrier and the cell can be considered to be equivalent, for example, the UE accessing one carrier and accessing one cell are equivalent.
  • the forwarding device may be configured or itself a core network device, or the core network device may have the function of the forwarding device of the present application, and may perform the action of the forwarding device.
  • the function of the core network is mainly to provide a user connection, management of the user, and completion of the service, as an interface provided by the bearer network to the external network.
  • the establishment of user connections includes functions such as mobile management (MM), connection management (CM), switching/routing, and recording notification.
  • User management includes user description, quality of service (QoS), user communication (accounting), virtual home environment (VHE), and security (the corresponding security measures provided by the authentication center include Security management of mobile services and security of access to external networks).
  • the bearer connection includes an external Public Switched Telephone Network (PSTN), an external circuit data network and a packet data network, an internet and an intranet, and a mobile phone text message of the mobile network itself.
  • SMS Short Message Service
  • the basic services that the core network can provide include mobile office, e-commerce, communication, entertainment services, travel and location-based services, telemetry-simple messaging services (monitoring control) and more.
  • the core network device may include: access and mobility function (AMF), session management function (SMF), policy control function (PCF), user plane.
  • AMF access and mobility function
  • SMF session management function
  • PCF policy control function
  • user plane Functional units such as user plane function (UPF).
  • AMF, SMF and PCF can work independently or together to implement certain control functions.
  • AMF, SMF and PCF can be combined together as a management device to complete the terminal device.
  • Access control and mobility management functions such as access authentication, secure encryption, location registration, session management functions such as user plane transport path establishment, release, and change, and analysis of some slice-related data (such as congestion) ), the function of the data related to the terminal device, the UPF mainly performs functions such as routing and forwarding of the user plane data, such as: responsible for filtering data packets, data transmission/retransmission, rate control, and generating charging information for the terminal device.
  • the forwarding device may also be a device that is independently configured in the mobile network, and the forwarding device may be in communication connection with the access network device or the core network device (for example, by wired or wireless connection), thereby enabling the forwarding device to be enabled. Communicate with the terminal device through the access network device or the core network device.
  • the forwarding device is merely exemplary.
  • the present application is not limited thereto.
  • the function of the forwarding device of the present application can be implemented, the specific configuration of the forwarding device can be arbitrarily changed.
  • the forwarding device can also be configured in a device such as a gateway device or a router.
  • multiple forwarding devices can be configured in the mobile network, and different forwarding devices can be connected in communication (for example, by wired or wireless connection).
  • data transmission between two terminal devices in the mobile network needs to be forwarded by at least one forwarding device, that is, The terminal device #1 is connected to the forwarding device #1, wherein the communication connection between the terminal device #1 and the forwarding device #1 may be a direct connection or an indirect connection.
  • the terminal device #1 and the forwarding device #1 may pass.
  • the access network device or the core network device communicates, so that the terminal device #1 can transmit the data #1 to the forwarding device #1 when it needs to send the data #1 to the terminal device #2.
  • the foregoing transmission process to the data #1 may have the following two cases.
  • the forwarding device #1 can directly communicate with the access network device or the core network device serving the terminal device #2, the forwarding device #1 can transmit the data #1 to the access network device serving the terminal device #2 or Core network equipment.
  • FIG. 1 shows an example of a possible arrangement of the forwarding device #1 in the mobile network in case 1.
  • the forwarding device #1 can be in communication connection with the access network device #1 and the access network device #2 (the access network device serving the terminal device #2).
  • the forwarding device #1 may be connected to the access network device #1 via the core network device.
  • the communication connection, or forwarding device #1 can be communicatively coupled to the access network device #2 via the core network device.
  • FIG. 1 only shows the case where the forwarding device #1 is connected to two access network devices, the present application is not limited thereto, and the forwarding device #1 can be connected to any number of access network devices.
  • a communication interface may be configured between the forwarding device and the access network, and the communication interface may be similar to an interface used to implement communication between network elements in the mobile network in the prior art. Avoid the details and omit the detailed description.
  • the forwarding device #1 can transmit the data #1 to the capable terminal.
  • the forwarding device #2 of the device #2 communication transmits the data #1 to the terminal device #2 by the forwarding device #2.
  • the terminal device #2 is in communication connection with the forwarding device #2, wherein the communication connection between the terminal device #2 and the forwarding device #2 may be a direct connection or an indirect connection, for example, the terminal device #2 and the forwarding device #2 Communication can be performed through an access network device or a core network device.
  • a plurality of (two or more) forwarding devices in the mobile network may be in communication connection.
  • the arrangement relationship between the forwarding device #1 and the forwarding device #2 will be described as an example, and the arrangement of two forwarding devices capable of (directly or indirectly) communication in the present application will be described.
  • FIG. 2 shows an example of a possible arrangement of the forwarding device #1 and the forwarding device #2 in the mobile network in case 2.
  • the forwarding device #1 and the forwarding device #2 can be independently set, and the forwarding device #1 and the forwarding device #2 can be connected by cable communication.
  • the forwarding device #1 and the forwarding device #2 may be in a wireless communication manner, for example, a forwarding interface may be configured between the forwarding device #1 and the forwarding device #2, and the communication interface may be used to implement the prior art.
  • the interfaces of the communication between the network elements in the medium mobile network are similar.
  • detailed description thereof is omitted.
  • the forwarding device #1 can be configured independently of the access network device #1.
  • the forwarding device #1 can be, for example, a core network device, or the forwarding device #1 can be independent of the core network. The entity of the device.
  • the configuration relationship between the forwarding device #2 and the access network device #2 may be similar to the configuration relationship between the forwarding device #1 and the access network device #1.
  • the number of access network devices connected to one forwarding device shown in FIG. 2 is merely exemplary.
  • the present application is not limited thereto, and the forwarding device may be connected to any number of access network devices.
  • FIG. 3 shows another example of a possible arrangement of forwarding device #1 and forwarding device #2 in a mobile network in case 2.
  • the forwarding device #1 and the forwarding device #2 may be configured in the same physical device (or physical device), such as a core network device.
  • the forwarding device #1 and the forwarding device #2 can be connected by communication such as an internal bus.
  • FIG. 4 shows still another example of the possible arrangement of forwarding device #1 and forwarding device #2 in the mobile network in case 2.
  • the forwarding device #1 and the access network device #1 can be configured in the same physical device, and, in this case, the forwarding device #1 and The access network device #1 can be connected by communication such as an internal bus.
  • forwarding device #2 and access network device #2 can be configured within the same physical device.
  • FIG. 5 shows still another example of the possible arrangement of forwarding device #1 and forwarding device #2 in the mobile network in case 2.
  • the forwarding device #1 and the access network device #1 may be different functional modules of the same entity.
  • FIG. 6 shows still another example of the possible arrangement of forwarding device #1 and forwarding device #2 in the mobile network in case 2.
  • the forwarding device #1, the access network device #1, and the forwarding device #2 may be configured in the same physical device, and the access network device #2 can be deployed independently of the physical device.
  • forwarding device #2, access network device #1, and forwarding device #2 may be configured in the same physical device, and access network device #1 may be deployed independently of the physical device.
  • each access network device may be communicably connected to multiple forwarding devices, and each forwarding device and multiple accesses may be used.
  • the network device (or core network device) is communicatively connected, so that when the terminal device #1 shown in FIG. 7 needs to transmit data to the terminal device #2, the access network device #1 can transmit the data to the forwarding device #1.
  • the illustrated terminal device #1 needs to transmit data to the terminal device #3 or the terminal device #4, the access network device #1 can transmit the data to the forwarding device #2.
  • the forwarding device #2 there is no need to make a communication connection between the forwarding devices.
  • FIG. 2 to FIG. 7 are merely exemplary, and the application is not limited thereto.
  • the access network device in FIG. 2 to FIG. 7 may be replaced with a core network. device.
  • the terminal device or the forwarding 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 a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through a process, such as 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 browsers, contacts, word processing software, and instant messaging software.
  • the specific structure of the execution body of the method provided by the embodiment of the present application is not particularly limited as long as the program of the code of the method provided by the embodiment of the present application can be run by using the program according to the present application.
  • the method can be communicated.
  • the execution body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a function module that can call a program and execute a program in the terminal device or the network device.
  • the term "article of manufacture” as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media.
  • the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (Digital Versatile Disc, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • multiple applications may be run at the application layer.
  • the application that performs the communication method of the embodiment of the present application is used to control the receiving device to complete the received data.
  • the application of the corresponding action can be a different application.
  • FIG. 8 is a schematic diagram of an example of a system in which the communication method of the embodiment of the present application is applied when the forwarding device is configured in the access network device.
  • the terminal device #1 and the terminal device #2 are in the access network device #1. (or, forwarding device #1) provides the cell
  • terminal device #3 is in the cell provided by access network device #2 (or forwarding device #2), and thus, when terminal device #1 needs to terminal device #2 When transmitting data, the access network device #1 can directly transmit the data to the terminal device #2.
  • the access network device #1 can transmit the data to the access network device #2, and the data is transmitted by the access network device #2 to the terminal device #3.
  • Each access network device may include one or more antennas.
  • the access network device may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexing) , demodulator, demultiplexer or antenna, etc.).
  • Each access network device can communicate with a plurality of terminal devices.
  • the terminal device can be, for example, a cellular telephone, a smart phone, a portable computer, a handheld communication device, a handheld computing device, a satellite radio, a global positioning system, a PDA, and/or any other suitable device for communicating over a wireless communication system.
  • the access network device may send data or information to the terminal device through a forward link (also referred to as a downlink), and receive data or information from the terminal device through a reverse link (also referred to as an uplink).
  • a forward link also referred to as a downlink
  • a reverse link also referred to as an uplink
  • the forward link can use a different frequency band than the reverse link.
  • FDD Frequency Division Duplex
  • the same frequency band can be used for the forward link and the reverse link.
  • Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of an access network device.
  • the antenna group can be designed to communicate with terminal devices in sectors of the coverage area of the access network device.
  • the access network device can transmit signals to all of the terminal devices in its corresponding sector by single antenna or multi-antenna transmit diversity.
  • the transmit antenna of the access network device can also utilize beamforming to improve the signal to noise ratio of the forward link.
  • the access network device uses beamforming to transmit signals to randomly dispersed terminal devices in the relevant coverage area, compared to the manner in which the access network device transmits signals to all of its terminal devices through single antenna or multi-antenna transmit diversity, Mobile devices in neighboring cells are subject to less interference.
  • the access network device or terminal device may be a wireless communication transmitting device and/or a wireless communication receiving device.
  • the wireless communication transmitting device can encode the data for transmission.
  • the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device.
  • Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.
  • the communication system 100 may be a PLMN network, a D2D network, an M2M network, an IoT network, a V2X network, or other networks.
  • FIG. 8 is only a simplified schematic diagram of an example, and the network may also include other access network devices, or other mobile networks. The network element is not shown in Figure 8.
  • FIG. 9 shows a procedure in which the terminal device #A (that is, an example of the first terminal device) transmits data #A (that is, an example of the first data) to the terminal device #B (that is, an example of the second terminal device).
  • the terminal device #A is located in the cell provided by the access network device #A.
  • the forwarding device is set in the access network device #A, that is, the access network device #A can implement the function of the forwarding device (for example, the first forwarding device) of the present application. .
  • the terminal device #A can generate a packet #A, which carries the data #A. Also, the packet #A includes a field #A (that is, an example of a target field). This field #A is used to carry information #A (that is, an example of the target information).
  • the information #A will be described in detail below.
  • the information #A can be used to cause the access network device #A to determine the destination to which the data #A needs to be sent.
  • the information #A may include at least one of the following:
  • the information of the terminal device #B may include the device identifier of the terminal device #B, wherein the device identifier of the terminal device #B can be unique Determining the terminal device #B, for example, the device identifier of the terminal device #B may include, but is not limited to, the Internet Protocol (IP) address of the terminal device #B, and the media access control of the terminal device #B (Media Access Control) , MAC) address, International Mobile Subscriber Identification Number (IMSI) of Terminal Equipment #B, International Mobile Equipment Identification Number (IMEI) of Terminal Equipment #B, Terminal Equipment #B At least one of an electronic serial number (ESN), a mobile phone number of the terminal device #B, or a temporary identification of the mobile network assigned to the terminal device #B.
  • IP Internet Protocol
  • MAC media access control of the terminal device #B
  • IMSI International Mobile Subscriber Identification Number
  • IMEI International Mobile Equipment Identification Number
  • ESN electronic serial number
  • a mobile phone number of the terminal device #B or a temporary identification of the mobile network assigned to
  • the information of the terminal device #B may include the group identifier of the group #B.
  • the group identifier of the group #B can uniquely indicate the group #B.
  • the group identifier of the group #B may include but is not limited to the IP group of the group #B. At least one of a broadcast address, a MAC multicast address of the group #B, or a group identity (Identity, ID) of the group #B.
  • the information of the terminal device #B enumerated above is only an exemplary description, and the present application is not limited thereto, and other information that can be used to determine the group of the terminal device #B or the terminal device #B falls into the present application. Within the scope of protection.
  • the data #B is data that needs to be broadcast to the area #B (that is, an example of the first area), and the terminal device #B may be a terminal device located in the area #B.
  • the information of the area #B may include mobile network information of the area #B, and the mobile network information may include, but is not limited to, a cell identity (or a cell list), a tracking area identifier ( Or, the tracking area list), the access network notification area identifier (or the access network notification area list), and at least one of the broadcast service area identifiers (or the broadcast service area list).
  • the mobile network information may include, but is not limited to, a cell identity (or a cell list), a tracking area identifier ( Or, the tracking area list), the access network notification area identifier (or the access network notification area list), and at least one of the broadcast service area identifiers (or the broadcast service area list).
  • the information of the area #B may include absolute geographic information of the area #B, for example, the area #B may be a circle, in which case the absolute geographic information may include the geographic coordinates of the center of the circular geographic area. Information and radius size information.
  • the area #B may be a polygonal geographic area composed of a plurality of geographical coordinate point connections. In this case, the absolute geographic information may include information of the geographic coordinate point.
  • the information of the area #B may include relative geographic information of the area #B, and the relative geographic information may refer to information of the relative position of the area #B with respect to the prescribed area #C.
  • the area #C may be an area agreed by the terminal device #A and the access network device #A, or the area #C may be an area specified by the communication system or the communication protocol, that is, the terminal device #A and the access The location of the area #C determined by the network device #A is the same.
  • the area #C may be determined by the geographical location of the cell in which the terminal device #A is located, or the area #C may be determined by the geographical location of the terminal device #A, or the area #C may be the access.
  • the geographical location of the network device #A is determined.
  • the relative geographic information may include information of the distance between the region #B and the region #A, and/or information of the orientation of the region #B among the plurality of orientations of the region #A.
  • the information of the area #B enumerated above and the information of the terminal device #B are only an exemplary description of the information #A, and the present application is not limited thereto, and the other can route the data #A to the terminal device #B. Or the information of the area #B can be used as the information #A.
  • the field #A may be a field in a Protocol Data Unit (PDU) of the protocol layer #A corresponding to the packet #A.
  • PDU Protocol Data Unit
  • the protocol layer #A may include at least one of the second layer (also referred to as layer 2) of the radio interface protocol stack used by the wireless communication between the terminal device and the access network device.
  • the protocol layer for example, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • protocol layer #A enumerated above is merely an exemplary description, and the present application is not limited thereto, and the protocol layer #A may also be any protocol layer in the radio interface protocol stack.
  • the data packet #A may further carry at least one of the following information:
  • Information #B information of the terminal device #A, wherein the implementation of the information of the terminal device #A may be similar to the implementation of the information of the terminal device #B. Here, in order to avoid redundancy, detailed description thereof is omitted;
  • Information #C Information of area #A, wherein the information of the area #A may include information of the mobile network in which the terminal device #A is located, or the information of the area #A may include that the terminal device #A is located.
  • the information of the geographical location, or the information of the area #A may include information of the geographical location in which the access network device #A is located.
  • QoS Quality of Service
  • Time information corresponding to data #A can be used to indicate at least one of the following: data #A generation time, data #A expected transmission time, data #A latest transmission time, data #A Synchronous transmission time identification, etc.
  • the above “time” can be expressed in various manners, for example, the time can be an absolute time, such as Universal Time Coordinated (UTC) time, Global Positioning System (GPS) clock, etc.; The time may be relative time, such as GPS clock count offset, relative SFN offset referenced by the SFN System Frame Number (SFN) of the network broadcast, and the like.
  • UTC Universal Time Coordinated
  • GPS Global Positioning System
  • SFN SFN System Frame Number
  • the information #A to the information #E may be carried in the same PDU (for example, the PDU of the protocol layer #A). Specifically, the information #A to the information #E may be carried on the information. In the header of the same PDU.
  • FIG. 10 shows a schematic diagram of an example of the PDU.
  • the bearer manners of the information #A to the information #E listed above are merely exemplary descriptions, and the present application is not limited thereto.
  • some information in the information #A to the information #E may also be carried in different protocols.
  • Layer of PDU may also be carried in different protocols.
  • part or all of the above information #B to information #E may not be carried in the data packet #A.
  • Case B The information #A is not carried in the field #A, and, in this case, the information carried in the field #A may be empty, or the field #A may carry the specified information #A', for example, information #A' may include a plurality of bits, each of which has a bit of 0, or a bit of 1 for each bit.
  • the terminal device #A can transmit the packet #A generated as described above to the access network device #A.
  • the access network device #A may parse the data packet #A at the protocol layer #A entity to determine whether the information #A is carried in the target field #A, that is, the above case A or case B.
  • the access network device #A can determine the destination to which the data #A needs to be sent based on the information #A.
  • the access network device #A can determine the terminal device #B or the group #B based on the information #A.
  • the access network device #A can determine the area #B based on the information #A.
  • the access network device #A When the access network device #A can communicate with the terminal device #B or the group #B, or when the coverage of the access network device #A includes the region #B, at S140, the access network device #A pair
  • the data carried in the packet #A ie, data #A
  • the packet #B1 is encapsulated to generate a packet #B1 that conforms to a communication protocol between the access network device #A and the terminal device (including the terminal device #B), and
  • the packet #B1 is transmitted to the terminal device #B, or the terminal device in the group #B or the area #B.
  • the access network device #A may further be based on one of the foregoing information #B to information #E. Or a variety of information, send the packet #B1.
  • the access network device #A can carry the information #B in the packet #B1, thereby enabling the receiving terminal device to determine that the data in the packet #B1 is from the terminal device #A based on the information #B.
  • the access network device #A can carry the information #C in the data packet #B1, thereby enabling the receiving terminal device to determine that the data in the data packet #B1 is from the terminal in the area #A based on the information #B. device.
  • the access network device #A may determine the transmission resource for carrying the data packet #B1 according to the information #D to satisfy the QoS requirement of the data #A.
  • the access network device #A can determine the transmission time of the packet #B1 based on the information #E.
  • the access network device #A may also be, for example, from another device (for example, the terminal device # The server of the operator of A, etc. acquires one or more kinds of information of the above information #B to information #E, and transmits the data packet based on one or more kinds of information of the above information #B to information #E# B1.
  • the access network device #A can determine the forwarding device #B (ie, an example of the second forwarding device) based on the information #A.
  • the forwarding device #B may include an access network device #B or a core network device #B.
  • the access network device #B is an access network device capable of communicating with the terminal device #B or the group #B, or the coverage of the access network device #B includes the region #B.
  • the core network device #B is a core network device capable of communicating with the access network device #B.
  • the forwarding device #B enumerated above is merely an exemplary description, and the present application is not limited thereto.
  • the forwarding device #B may include a mobile that can communicate with the terminal device in the terminal device #B or the region #B. Network element of the network.
  • the mapping relationship #A may be stored in the access network device #A.
  • the mapping relationship #A may be used to indicate a forwarding device (for example, an access network device or a core network device) to which each of the plurality of terminal devices is connected.
  • a forwarding device for example, an access network device or a core network device
  • the mapping relationship #A may be specifically M terminals.
  • M and N are integers greater than or equal to 1.
  • the mapping relationship #A may be used to indicate an area covered by each of the plurality of forwarding devices (for example, an access network device or a core network device), for example, the mapping relationship #A may specifically indicate K Correspondence between the information of the final area and the P forwarding devices, wherein each forwarding device can cover the corresponding area, where K and P are integers greater than or equal to 1.
  • mapping relationship #A may be sent by the control device in the mobile network to the access network device #A.
  • the control device may be connected to each forwarding device (for example, an access network device or a core network device) in the communication system, and each forwarding device may report the terminal capable of communicating with the control device.
  • the information of the device, or each forwarding device can report the information of the area covered by the device to the control device. Therefore, the control device can generate the mapping relationship #A based on the information reported by each forwarding device.
  • control device or access network device #A determines the mapping relationship #A.
  • the method for determining the mapping relationship #A is merely exemplary. The present application is not limited thereto, and the control device or the access network device #A may also be based on the administrator. Or the operator's input determines the mapping relationship #A.
  • the access network device #A encapsulates the data (ie, data #A) carried in the data packet #A to generate the conforming access network device #A and the forwarding device #B (for example, access) Packet #B2 of the communication protocol between the network device #B or the core network device #B), and transmits the packet #B2 to the forwarding device #B.
  • data #A data carried in the data packet #A
  • the forwarding device #B for example, access
  • the access network device #A may further encapsulate at least one of the foregoing information #B to information #E into the data packet #B2.
  • the forwarding device #B may encapsulate the data (ie, data #A) carried in the data packet #B2 to generate a communication protocol between the forwarding device #B and the terminal device (including the terminal device #B).
  • the packet #B3 is sent to the terminal device #B, or the terminal device in the group #B or the area #B.
  • the forwarding device #B may further be based on one or more of the above information #B to information #E.
  • the information is transmitted by the packet #B1, and the process can be similar to the process described in the above case A-1, and a detailed description thereof will be omitted herein to avoid redundancy.
  • the forwarding device #B may also be, for example, from another device (for example, an operator's server, etc.) Obtaining one or more kinds of information in the above information #B to information #E, and transmitting the data packet #B2 based on one or more kinds of information of the information #B to information #E, wherein the process can be connected
  • the process in which the network access device #A transmits the data packet #B1 based on one or more kinds of information in the information #B to the information #E is similar, and a detailed description thereof will be omitted herein to avoid redundancy.
  • the access network device #A determines that the field #A does not carry the information #A, for example, the information carried in the field #A is empty, or the field #A carries the specified information #A' (for example, the bit If the information is 0 or 1, the access network device #A can determine the information #A based on the information of the terminal device #A.
  • the information of the terminal device #A may include context information of the terminal device #A, whereby the access network device #A may determine the information #A based on the context information of the terminal device #A, or It is determined that the packet #A needs to be sent to the terminal device #B or the area #B.
  • the information of the terminal device #A may include the device identifier of the terminal device #A, the group identifier of the group to which the terminal device #A belongs, the cell identifier of the cell in which the terminal device #A is located, or the terminal device #A The bearer identifier of the corresponding bearer, and the like.
  • mapping relationship between the information of the plurality of terminal devices and the plurality of forwarding devices may be stored in the access network device #A in advance (indicated, mapping relationship #B), so that the access network device #A will The forwarding device corresponding to the information of the terminal device #A indicated in the mapping relationship #B is determined to be the forwarding device #B.
  • the access network device #A may pre-negotiate with the terminal device #A a forwarding device (ie, forwarding device #B) corresponding to the information of the terminal device #A, and thus, The correspondence between the information of the terminal device #A and the forwarding device #B is recorded in the mapping relationship #B.
  • a forwarding device ie, forwarding device #B
  • the access network device #A may determine the terminal device #B that communicates with the terminal device #A based on the information of the terminal device #A, and determine the forwarding device #B based on the information of the terminal device #B, and then The correspondence between the information of the terminal device #A and the forwarding device #B is recorded in the mapping relationship #B.
  • the access network device #A can determine the forwarding device corresponding to the information of each terminal device it serves, and then determine the mapping relationship #B.
  • mapping relationship #B may also be an administrator input to the access network device #A.
  • mapping relationship #B may also be obtained by the access network device #A from the manufacturer or operator.
  • the access network device #A can determine in the case B that the data packet #A needs to be transmitted to the terminal device #B or the area #B, and the forwarding device #B can be determined.
  • the subsequent process may be similar to the transmission process described in the above case A, and a detailed description thereof will be omitted herein to avoid redundancy.
  • FIG. 11 shows that the terminal device # ⁇ (ie, another example of the first terminal device) transmits data # ⁇ (ie, another example of the first data) to the terminal device # ⁇ (ie, another example of the second terminal device). the process of.
  • the terminal device # ⁇ is located in the cell provided by the access network device # ⁇ .
  • the forwarding device is disposed in the core network device # ⁇ communicatively connected to the access network device # ⁇ , that is, the core network device # ⁇ can implement the forwarding device of the present application (for example, , the function of the first forwarding device).
  • the terminal device # ⁇ may generate a packet # ⁇ , which carries the data # ⁇ . Also, the field # ⁇ is included in the packet # ⁇ (that is, another example of the target field). This field # ⁇ is used to carry information # ⁇ (that is, an example of target information).
  • the information # ⁇ can be used to cause the core network device # ⁇ to determine the destination to which the data # ⁇ needs to be transmitted.
  • the information # ⁇ may include at least one of the following:
  • the information of the terminal device # ⁇ may include the device identifier of the terminal device # ⁇ , wherein the device identifier of the terminal device # ⁇ can be unique Determining the terminal device # ⁇ , for example, the device identifier of the terminal device # ⁇ may include, but is not limited to, an Internet Protocol (IP) address of the terminal device # ⁇ , a MAC address of the terminal device # ⁇ , and a terminal device # ⁇ .
  • IP Internet Protocol
  • the device identifier of the terminal device # ⁇ may include, but is not limited to, an Internet Protocol (IP) address of the terminal device # ⁇ , a MAC address of the terminal device # ⁇ , and a terminal device # ⁇ .
  • IP Internet Protocol
  • the information of the terminal device # ⁇ may include the group identifier of the group # ⁇ .
  • the group identifier of the group # ⁇ can uniquely indicate the group # ⁇ , for example, as an example and not a limitation, the group identifier of the group # ⁇ can include but is not limited to the IP group of the group # ⁇ . At least one of a broadcast address, a MAC multicast address of the group # ⁇ , or a group ID of the group # ⁇ .
  • the information of the terminal device # ⁇ enumerated above is only an exemplary description, and the present application is not limited thereto, and other information that can be used to determine the group of the terminal device # ⁇ or the terminal device # ⁇ falls into the present application. Within the scope of protection.
  • the data # ⁇ is data that needs to be broadcast to the area # ⁇ (i.e., another example of the first area), and the terminal device # ⁇ may be a terminal device located in the area # ⁇ .
  • the information of the area # ⁇ may include mobile network information of the area # ⁇ , and the mobile network information may include, but is not limited to, a cell identity (or a cell list), a tracking area identifier ( Or, the tracking area list), the access network notification area identifier (or the access network notification area list), and at least one of the broadcast service area identifiers (or the broadcast service area list).
  • the mobile network information may include, but is not limited to, a cell identity (or a cell list), a tracking area identifier ( Or, the tracking area list), the access network notification area identifier (or the access network notification area list), and at least one of the broadcast service area identifiers (or the broadcast service area list).
  • the information of the region # ⁇ may include absolute geographic information of the region # ⁇ .
  • the region # ⁇ may be a circle.
  • the absolute geographic information may include the geographic coordinates of the center of the circular geographic region.
  • Information and radius size information may include information of the geographic coordinate point.
  • the information of the area # ⁇ may include relative geographic information of the area # ⁇ , and the relative geographic information may refer to information of the relative position of the area # ⁇ with respect to the prescribed area # ⁇ .
  • the area # ⁇ may be an area agreed by the terminal device # ⁇ and the core network device # ⁇ , or the area # ⁇ may be an area specified by a communication system or a communication protocol, that is, the terminal device # ⁇ and the core network device The position of # ⁇ determined by # ⁇ is the same.
  • the area # ⁇ may be determined by the geographical location of the cell in which the terminal device # ⁇ is located, or the area # ⁇ may be determined by the geographical location of the terminal device # ⁇ , or the area # ⁇ may be the access.
  • the geographical location of the network device # ⁇ is determined.
  • the relative geographic information may include information of the distance between the region # ⁇ and the region # ⁇ , and/or information of the orientation of the region # ⁇ among the plurality of orientations of the region # ⁇ .
  • the information of the area # ⁇ enumerated above and the information of the terminal device # ⁇ are only an exemplary description of the information # ⁇ , and the present application is not limited thereto, and the other can route the data # ⁇ to the terminal device # ⁇ . Or the information of the area # ⁇ can be used as the information # ⁇ .
  • the field # ⁇ may be a field in the PDU of the protocol layer # ⁇ corresponding to the data packet # ⁇ .
  • the protocol layer # ⁇ may include at least one protocol layer in layer 2 of the radio interface protocol stack used by the wireless communication between the terminal device and the access network device, eg, PDCP layer, RLC Layer and MAC layer.
  • protocol layer # ⁇ enumerated above is only an exemplary description, and the application is not limited thereto, and the protocol layer # ⁇ may also be any protocol layer in the wireless interface protocol stack.
  • the data packet # ⁇ may further carry at least one of the following information:
  • Information # ⁇ information of the terminal device # ⁇ , wherein the implementation of the information of the terminal device # ⁇ may be similar to the implementation of the information of the terminal device # ⁇ . Here, in order to avoid redundancy, detailed description thereof is omitted;
  • Information # ⁇ information of area # ⁇ , wherein the information of the area # ⁇ may include information of the mobile network in which the terminal device # ⁇ is located, or the information of the area # ⁇ may include that the terminal device # ⁇ is located.
  • the information of the geographical location, or the information of the area # ⁇ may include information of the geographical location in which the access network device # ⁇ is located.
  • time information corresponding to data # ⁇ can be used to indicate at least one of the following: data # ⁇ generation time, data # ⁇ expected transmission time, data # ⁇ latest transmission time, data # ⁇ Synchronous transmission time identification, etc.
  • time can be expressed in various ways, for example, the time can be absolute time, such as UTD time, GPS clock, etc.; or, the time can be relative time, such as GPS clock count offset, broadcast by network
  • the SFN is the reference relative SFN offset and the like.
  • the information # ⁇ to information # ⁇ may be carried in the same PDU (for example, the PDU of the protocol layer # ⁇ ), and specifically, the information # ⁇ # ⁇ may be carried on the information. In the header of the same PDU.
  • Case ⁇ The information # ⁇ is not carried in the field # ⁇ , and, in this case, the information carried in the field # ⁇ may be empty, or the field # ⁇ may carry the specified information # ⁇ ', for example, information # ⁇ ' may include a plurality of bits, each of which has a bit of 0, or a bit of 1 for each bit.
  • the terminal device # ⁇ when the terminal device # ⁇ can directly communicate with the core network device # ⁇ , the terminal device # ⁇ can transmit the data packet # ⁇ 1 to the core network device # ⁇ at S220.
  • the data packet # ⁇ 1 may be in the form of a communication protocol between the terminal device and the core network device of the foregoing data packet # ⁇ .
  • the terminal device # ⁇ may transmit the access network device # ⁇ served as the terminal device # ⁇ by the data packet # ⁇ 2.
  • the data packet # ⁇ 2 may be in the form of a communication protocol between the terminal device and the access network device of the foregoing data packet # ⁇ .
  • the access network device # ⁇ may encapsulate the data in the data packet # ⁇ 2 to generate a data packet ⁇ 1 that conforms to the transmission protocol between the access network device and the core network device, and forward the data packet ⁇ 1 to Core network device # ⁇ .
  • the access network device # ⁇ may further be based on one of the foregoing information # ⁇ to information # ⁇ . Or a variety of information, send the packet # ⁇ 1.
  • the access network device # ⁇ can carry the information # ⁇ in the packet # ⁇ 1, thereby enabling the receiving terminal device to determine that the data in the packet # ⁇ 1 is derived from the terminal device # ⁇ based on the information # ⁇ .
  • the access network device # ⁇ can carry the information # ⁇ in the data packet # ⁇ 1, thereby enabling the receiving terminal device to determine that the data in the data packet # ⁇ 1 is from the terminal in the area # ⁇ based on the information # ⁇ . device.
  • the access network device # ⁇ may determine the transmission resource for carrying the data packet # ⁇ 1 according to the information # ⁇ to satisfy the QoS requirement of the data # ⁇ .
  • the access network device # ⁇ can determine the transmission time of the packet # ⁇ 1 based on the information # ⁇ .
  • the access network device # ⁇ may also be, for example, from another device (for example, the terminal device #).
  • the server of the operator of ⁇ or the like acquires one or more kinds of information of the above information # ⁇ to information # ⁇ , and transmits the data packet based on one or more kinds of information of the above information # ⁇ to information # ⁇ . 11.
  • the access network device # ⁇ may further encapsulate one or more of the above information # ⁇ to information # ⁇ into the data packet # ⁇ 1.
  • the access network device # ⁇ may be connected only to one core network device (for example, the above-mentioned core network device # ⁇ ). In this case, the access network device # ⁇ may directly send the data packet # ⁇ 1. To the core network device # ⁇ .
  • the access network device # ⁇ may be communicably connected to multiple core network devices (including the foregoing core network device # ⁇ ), and the multiple core network devices may be The plurality of forwarding devices have a corresponding relationship, that is, each core network device can be in communication connection with the corresponding forwarding device.
  • the access network device # ⁇ may determine the core network device that is communicatively connected to the forwarding device # ⁇ among the plurality of core network devices as the core network device # ⁇ .
  • the process of determining the forwarding device # ⁇ by the access network device # ⁇ may be similar to the process for determining the forwarding device #B by the access network device #A.
  • detailed description thereof is omitted.
  • a mapping relationship #1 may be stored in the access network device # ⁇ , where the mapping relationship #1 may be used to indicate a correspondence between multiple core network devices and multiple forwarding devices, where each The core network devices can communicate with the corresponding forwarding device, so that the access network device # ⁇ can determine the core network device # ⁇ based on the mapping relationship #1.
  • mapping relationship #1 may be sent by the control device in the mobile network to the access network device # ⁇ .
  • the control device may be connected to each forwarding device (for example, an access network device or a core network device) in the communication system, and each forwarding device may report the terminal capable of communicating with the control device.
  • the information of the device, or each forwarding device can report the information of the area covered by the device to the control device.
  • each forwarding device can report information of the core network device with which the communication device can communicate with the control device. Therefore, the control device can generate the mapping relationship #1 based on the information reported by each forwarding device.
  • mapping relationship #1 by the above-mentioned control device or access network device # ⁇ is merely exemplary, and the present application is not limited thereto, and the control device or the access network device # ⁇ may also be based on the administrator. Or the operator's input determines the mapping relationship #1.
  • the core network device # ⁇ may parse the packet # ⁇ 1 at the protocol layer # ⁇ to determine whether or not the information # ⁇ is carried in the target field # ⁇ , that is, the above-described case ⁇ or case ⁇ .
  • the core network device # ⁇ can determine the destination to which the data # ⁇ needs to be transmitted based on the information # ⁇ .
  • the core network device # ⁇ can determine the terminal device # ⁇ or the group # ⁇ based on the information # ⁇ .
  • the core network device # ⁇ can determine the area # ⁇ based on the information # ⁇ .
  • the core network device # ⁇ can communicate with the terminal device # ⁇ or the group # ⁇ , or when the coverage of the core network device # ⁇ includes the region # ⁇ , the core network device # ⁇ can The data carried in the packet # ⁇ 1 (ie, data # ⁇ ) is encapsulated to generate a packet # ⁇ 2 that conforms to the communication protocol between the core network device # ⁇ and the terminal device (including the terminal device # ⁇ ), and the data is The packet # ⁇ 2 is transmitted to the terminal device # ⁇ , or the terminal device in the group # ⁇ or the region # ⁇ .
  • the core network device # ⁇ when the access network device (referred to as: access network device ⁇ ) to which the core network device # ⁇ is connected can communicate with the access network device of the terminal device # ⁇ or the group # ⁇ , or the core network device# When the coverage of the access network device (for example, the access network device ⁇ ) to which ⁇ is connected includes the area # ⁇ , the core network device # ⁇ may perform data (ie, data # ⁇ ) carried in the data packet # ⁇ 1.
  • Encapsulating to generate a data packet # ⁇ 3 conforming to a communication protocol between the core network device # ⁇ and the access network device # ⁇ , and transmitting the data packet # ⁇ 3 to the access network device # ⁇ , thereby accessing the network device # ⁇ may encapsulate the data carried in the data packet # ⁇ 3 (ie, data # ⁇ ) to generate a data packet conforming to the communication protocol between the access network device # ⁇ and the terminal device (including the terminal device # ⁇ ) # ⁇ 4, and the packet # ⁇ 4 is transmitted to the terminal device # ⁇ , or the terminal device in the group # ⁇ or the region # ⁇ .
  • the core network device # ⁇ or the access network device # ⁇ may also transmit the data packet based on one or more kinds of information of the above information # ⁇ to information # ⁇ .
  • the process may be similar to the process in which the core network device #A sends a data packet based on one or more of the information #B to the information #E.
  • detailed description thereof is omitted.
  • the core network device # ⁇ may further add one or more kinds of information of the above information # ⁇ to information # ⁇ in the packet # ⁇ 3.
  • the core network device # ⁇ may be based on This information # ⁇ determines the forwarding device # ⁇ (that is, an example of the second forwarding device).
  • the forwarding device # ⁇ may include an access network device # ⁇ or a core network device # ⁇ .
  • the access network device # ⁇ is an access network device capable of communicating with the terminal device # ⁇ or the group # ⁇ , or the coverage of the access network device # ⁇ includes the region # ⁇ .
  • the core network device # ⁇ is a core network device capable of communicating with the access network device # ⁇ .
  • the forwarding device # ⁇ is merely an exemplary description, and the present application is not limited thereto.
  • the forwarding device # ⁇ may include a mobile that can communicate with a terminal device in the terminal device # ⁇ or the region # ⁇ . Network element of the network.
  • the mapping relationship #2 may be stored in the core network device # ⁇ .
  • the mapping relationship #2 may be used to indicate a forwarding device (for example, an access network device or a core network device) to which each of the plurality of terminal devices is connected.
  • a forwarding device for example, an access network device or a core network device
  • the mapping relationship #2 may specifically indicate the M terminals.
  • M and N are integers greater than or equal to 1.
  • the mapping relationship #2 may be used to indicate an area covered by each of the plurality of forwarding devices (for example, an access network device or a core network device), for example, the mapping relationship #2 may specifically indicate K Correspondence between the information of the final area and the P forwarding devices, wherein each forwarding device can cover the corresponding area, where K and P are integers greater than or equal to 1.
  • mapping relationship #2 may be sent by the control device in the mobile network to the core network device # ⁇ .
  • the control device may be connected to each forwarding device (for example, an access network device or a core network device) in the communication system, and each forwarding device may report the terminal capable of communicating with the control device.
  • the information of the device, or each forwarding device can report the information of the area covered by the device to the control device. Therefore, the control device can generate the mapping relationship #2 based on the information reported by each forwarding device.
  • control device or core network device # ⁇ determines the mapping relationship #2.
  • the method for determining the mapping relationship #2 is merely exemplary. The present application is not limited thereto, and the control device or the core network device # ⁇ may also be based on an administrator or an operation.
  • the input of the quotient determines the mapping relationship #2.
  • the core network device # ⁇ encapsulates the data (ie, data # ⁇ ) carried in the data packet # ⁇ 1 to generate the compliant core network device # ⁇ and the forwarding device # ⁇ (eg, the access network device # ⁇ ) Or the packet # ⁇ 5 of the communication protocol between the core network device # ⁇ ), and the packet # ⁇ 5 is sent to the forwarding device # ⁇ .
  • the forwarding device # ⁇ encapsulates the data (ie, data # ⁇ ) carried in the packet # ⁇ 5 to generate data conforming to the communication protocol between the forwarding device # ⁇ and the terminal device (including the terminal device # ⁇ ). Packet # ⁇ 6, and transmits the packet # ⁇ 6 to the terminal device # ⁇ , or the terminal device in the group # ⁇ or the region # ⁇ .
  • the core network device # ⁇ may further be based on one of the above information # ⁇ to information # ⁇ or A plurality of pieces of information are transmitted, the packet # ⁇ 5 is transmitted, and the process can be similar to the process described in the case A-1 above.
  • the core network device # ⁇ may also be, for example, from another device (for example, the terminal device # ⁇ )
  • the server of the operator, etc. acquires one or more kinds of information of the above information # ⁇ to information # ⁇ , and adds one or more kinds of information of the above information # ⁇ to information # ⁇ to the packet # ⁇ 5 .
  • the forwarding device # ⁇ can transmit the packet # ⁇ 6 based on one or more of the information # ⁇ to the information # ⁇ , and the process can be based on the information #B to the information #E with the access network device #A.
  • the process of transmitting a data packet by one or more kinds of information is similar, and a detailed description thereof will be omitted herein to avoid redundancy.
  • the specific transmission process based on the communication method of the present application when the forwarding device listed above is the access network device or the core network device, and the specific transmission process based on the communication method of the present application when the forwarding device is a modular logical component.
  • the forwarding device at the transmitting end is recorded as an uplink bridge (denoted as U-bride), and the forwarding device at the receiving end is recorded as a downlink bridge (denoted as D-Bbride).
  • the inter-network bridge forwarding relationship may be described in three phases.
  • the first phase is a bridging source terminal (referred to as a U-UE) to a source bridging node (ie, U-bridge);
  • the source bridges the node to the target bridge node (ie, D-bridge);
  • the third phase bridges the target node to the bridge target terminal (referred to as D-UE).
  • the access network device (called U-BS) of the U-UE can transparently forward the uplink bridging adaptation protocol sent by the U-UE (U- The Bridge application protocol (UBAP) PDU to the U-bridge, wherein the UBAP PDU may carry information for determining the D-bridge (ie, an example of the target information).
  • U-BS The Bridge application protocol
  • UBAP PDU may carry information for determining the D-bridge (ie, an example of the target information).
  • the U-BS may generate a UBAP' PDU according to the UBAP PDU sent by the U-UE, where the UBAP' PDU is a PDU conforming to a transmission protocol between the U-BS and the U-bridge, and sends the PDU to the U- Bridge.
  • the U-BS may modify the information carried in the UBAP PDU, for example, adding QoS information or sending time information.
  • the structure of the UBAP PDU or the UBAP' PDU may be similar to the structure shown in FIG. 10, that is, may be composed of a header and an SDU.
  • the SDU is the data transmitted locally between the terminals.
  • the header can carry at least one of the following information: source information, target information, quality of service requirement information, and time information.
  • the source information may be address information of the source terminal, such as an ip address, an L2 MAC address, or terminal identification information: such as an IMSI or other ID that can determine the terminal, such as a temporary identifier that may be assigned to the terminal to protect the privacy network; or source terminal location information. , such as the identity of the cell in which it is located, or geographic location coordinate information.
  • the target information is used to determine the destination to which the UBAP SDU needs to be sent, including the address or identification information of the target terminal, the address or identification information of the target group, such as an IP multicast address, a MAC multicast address, or a group ID assigned by the network.
  • Mobile network location information may also be included, such as cell identity (list), tracking zone identity (list), access network notification zone (list), broadcast service zone, or other mobile network zone identity consisting of cells. It can also be geographic location information, and can use geographic area information: a circular geographic area determined by geographic coordinates and radius, or a polygonal geographic area formed by connecting a plurality of geographical coordinate points.
  • the quality of service requirement information is used to determine the service level of the UBAP SDU, which can be represented by priority.
  • the priority can also be distinguished according to the different underlying bearer identifiers of L1/L2.
  • the air interface can be distinguished by different logical channel IDs, and the air interface can be distinguished by different tunnel identifiers.
  • the quality of service requirement information is used to indicate time information related to the SDU, such as a packet generation time, a time when the data packet is expected to be transmitted, a latest transmission time of the data packet, a synchronization transmission time identifier, and the like.
  • time information related to the SDU such as a packet generation time, a time when the data packet is expected to be transmitted, a latest transmission time of the data packet, a synchronization transmission time identifier, and the like.
  • the Time information also needs to carry additional type information due to the type of time information indicated. More than one time information can also be carried in the PDU.
  • the time can be expressed in a variety of ways, such as absolute time, such as UTC time, GPS clock, etc., or relative time, such as GPS clock count offset, SFN of network broadcast as reference relative SFN offset, and the like.
  • a protocol layer may be added in the communication protocol stack to carry the UBAP PDU or the UBAP' PDU.
  • the protocol header of the underlying L2 (such as PDCP or GTP-U) may be extended to carry the foregoing target information. At this time, the UBAP header is not transmitted, and only the UBAP SDU is transmitted.
  • the header of the UBAP PDU sent by the U-UE may not carry information, or only carry the target information, so that the U-BS may add additional information to the header of the UBAP PDU sent by the U-UE, thereby The overhead of the U-UE sending on the air interface can be saved.
  • the source information as described above is generally known by the U-BS, and the QoS information can be obtained by using the bearer id information carried by the U-Uu L1/L2, such as by using different logical channel ids or radio bearers id. Different QoS.
  • the U-UE can only send the short format of the time information. For example, when the 32Bit indicates the time information, the U-UE only sends the lower 16 bits or 8 bits on the U-Uu interface, and the complete 32 bit can have the U-BS complement. all.
  • the U-BS can also carry some measurement information such as local load information, and channel measurement information of the U-UE, which is carried in the UBAP'SDU and provided to the U-bridge.
  • U-BS and U-bridge When U-BS and U-bridge are deployed separately, they can be n-to-1, and one U-Bridge can serve multiple U-BSs.
  • U-BS and U-Bridge can establish a common interface connection for UBAP SDUs, and can also establish different interfaces for each UE, and distinguish them by L1/L2 identifiers of different interfaces. In this case, UBAP can carry no elements. information.
  • the U-bridge module in the base station can directly process the UBAP PDU sent by the UE.
  • the received UBAP PDU is converted by the U-bridge into a BAP PDU and sent to one or more D-Bridges.
  • U-Bridge and D-Bridge are not co-deployed, one U-Bridge can connect multiple D-Bridges, whereas one D-Bridge can connect multiple U-Bridges.
  • U-Bridge determines the D-Bridge to be sent based on the header information carried by the UBAP.
  • U-Bridge and D-Bridge When U-Bridge and D-Bridge are deployed together, they can be sent to the co-deployed D-Bridge by default.
  • the UBAP PDU and BAP have similar data structures.
  • U-Bridge can make no changes to UBAP and send it directly as BAP.
  • U-Bridge can also be modified to generate a new BAP transmission.
  • the modification target information is information corresponding to the designated D-Bridge.
  • Figure 13 shows a typical D-Bridge configuration, with one D-Bridge responsible for several D-BSs covering one area.
  • U-Bridge determines which one or more D-Bridges to send the UBAP packet to according to the information in the above Dst Info, and the U-Bridge can be sent by multicast when it needs to be sent to multiple D-Bridges, or Copy multiple copies of the UBAP PDU to the D-Bridge.
  • the target information may be any of the following expressions
  • the U-Bridge needs to transmit the data packet to the corresponding D-Bridge according to the correspondence information between the target terminal identifier and the D-Bridge.
  • the target information is mobile network location information, it is further divided into absolute mobile network location information and relative mobile network location.
  • the cell ID, the location area ID, the access network notification area, the broadcast service area, and the like of the target indicated by the absolute mobile network location information, and the location information may include one or more target location identifiers or a target location identifier list.
  • the relative location information may be a certain area of the relative source information.
  • the source information may be a cell in which the U-UE is located, a location area, an access network notification area, or a broadcast service area, etc.
  • the relative location may be a Bridge transmission area related to the area indicated by the source information.
  • the special case is the area of the Bridge transmission area, that is, the area indicated by the source information.
  • the Bridge transmission area is the location area. If the source information is the cell ID of the U-UE, the corresponding Bridge transmission area may be a neighboring area of the cell.
  • the U-Bridge determines the corresponding D-bridge by the source information and the bridge transmission area correspondence.
  • the target information is geographical location information, it is also divided into an absolute position and a relative position.
  • the absolute geographical location has multiple identification methods, such as geographic location coordinates, a plurality of geographic location coordinate lines, or geographical coordinates to determine the geographic area composed of the center of the circle and the physical radius.
  • the relative position and the relative area with reference to a certain geographic location may be referenced by the location indicated by the source information, such as the area where the U-UE is located, and the range of the specified distance (for example, 200 meters).
  • U-Bridge determines the transmitted D-Bridge based on the correspondence between the geographic location and the D-Bridge.
  • the U-Bridge may be based on the default configuration of the network, such as the above relative position, such as U-UE.
  • the specified range of the location (for example, 200 meters) or the neighboring cell of the cell where the U-UE is located determines the corresponding D-Bridge.
  • the corresponding D-Bridge may also be determined as the target group identification information according to the context of the U-UE, such as the group identifier to which the U-UE belongs.
  • the correspondence relationship of the above D-Bridge can be represented by D-bridge identification information, interface connection number, D-Bridge address, or multicast address corresponding to D-Bridge.
  • the D-bridge can be determined by IP address, port or tunnel identification. Different QoS services can be distinguished between U-Bridge and D-Bridge through different tunnel identifiers.
  • the tunnel can also be called a bearer.
  • the received BAP PDU is converted by the D-Bridge into a DBAP PDU and sent to one or more D-BSs, which are then sent by the D-BS to one or more D-UEs.
  • the DBAP PDU may be sent between the D-Bridge and the D-BS in unicast or multicast mode.
  • the D-Bridge needs to copy the DBAP PDUs to the corresponding D-BS, and the target D-BS can be determined based on the IP address or the bearer identifier.
  • the multicast MAC address, IP address, or tunnel identifier that can be used is used to determine the target D-BS.
  • the air interface between the D-BS and the D-UE can also be sent in unicast or multicast mode.
  • the D-BS needs to copy the DBAP through the dedicated radio bearer of the air interface D-UE, and send it to the D-UE through a dedicated air interface identifier (for example, C-RNTI).
  • a dedicated air interface identifier for example, C-RNTI
  • the multicast mode is used by the D-BS, it can be sent to a group of D-UEs through the air interface multicast identifier (for example, G-RNTI) through the corresponding multicast bearer.
  • DBAP PDUs and BAPs have similar data formats.
  • D-Bridge can make no changes to BAP and send it directly when DBAP is used. Similar to the above, the D-Bridge can determine the corresponding D-BS through the Dst Info in the BAP, and send it to the corresponding D-BS through the interface in multicast or unicast mode.
  • the D-BS receives the DBAP, and selects the D-UE managed by the unicast or multicast according to the Dst info carried in the DBAP.
  • the D-BS may further determine whether it matches the attribute of the node according to the target information. If the target information is the target terminal identifier or the target group identifier, the D-BS determines whether there is any terminal list information or terminal group list information managed under the D-BS. Matches the target information. If yes, the D-BS may determine, according to the identification information indicated in the target information, the identifier sent by the air interface, and if sent to a target terminal, the channel indicated by the air interface identifier (such as C-RNTI) specified by the terminal is sent to The terminal.
  • the target information is the target terminal identifier or the target group identifier
  • the D-BS determines whether there is any terminal list information or terminal group list information managed under the D-BS. Matches the target information. If yes, the D-BS may determine, according to the identification information indicated
  • the D-BS may duplicate the DBAPs, and respectively send the channels indicated by the respective air interface identifiers of the terminals to the respective terminals, or may adopt multicast or broadcast mode.
  • the air interface group identifier or the broadcast identifier is used to indicate that the multicast channel or the broadcast channel is sent once.
  • the terminal in the target terminal group receives the information on the same air interface resource at the same time, thereby saving air interface resources.
  • the D-BS can adopt the corresponding scheduling priority guarantee to send according to the requirements. If the time information carries the synchronous transmission time, multiple D-BSs are simultaneously transmitted at the same time, thereby increasing the received signal strength of the D-UEs in multiple D-BS overlapping coverage.
  • different D-bridges can be responsible for bridging forwarding of different areas, and two D-bridges manage D-BSs of two different areas, allowing overlap between areas (with a common D-BS).
  • different D-bridges manage spatial partitioning of different granularities
  • one D-bridge manages spatial partitioning of small granularity (such as cell level)
  • another D-bridge may be this.
  • a bridging service of a whole area (composed of continuous coverage of multiple cells).
  • U-bridge and D-bridge establish an interface, they can know the area that different D-bridges are responsible for, and select the appropriate D-bridge bridging data according to the service requirements of the bridging data of the UE.
  • U-bridge can obtain the bridge area information of the D-bridge according to the management platform. According to the D-bridge area, the corresponding DNS domain name is constructed. If U-bridge wants to bridge the corresponding data in cell1, the DNS domain name can be constructed as cell1.bridge.network1, which indicates that the D-bridge that wants to connect to the cell1 bridge under the network1 is connected. , mapped by DNS to the corresponding D-bridge IP address.
  • Scenario 1 The UE needs to send a message to a terminal within 200 meters of its surroundings.
  • S-UE is a car, and an emergency situation requires temporary stop.
  • S-UE is an automatic robot of the factory, an accident.
  • Scene 2 the UE belongs to a communication group and needs to send a message to its group members.
  • Typical examples are car formations on highways that form a group.
  • Intra-group measurements require control information such as brake acceleration before and after rapid interaction, or data information detected by sensors before and after measurement.
  • a group of robots cooperate to complete a cargo processing operation, and need to interact with various positioning control information within the group.
  • FIG. 16 is a typical 5G deployment scenario in which the gNB has both U-BS and D-BS functions.
  • U-Bridge and D-Bridge are deployed separately as logical functions and can be extended on the logical functions of UPF.
  • Bridge control as a control to U-Bridge, D-bridge and gNB configuration work can be used as an independent logic function deployment, can also be extended in the SMF logic function.
  • FIG. 17 is a diagram showing a process of establishing a session in the architecture of FIG. 16.
  • the signaling between the gNB and the bridge control needs to be forwarded by the AMF, and the Bridge control is also provided.
  • the user plane configuration that may require a prior response to the PCF to determine the user policy, and possibly additional authentication encryption procedures are omitted from Figure 17.
  • the UE needs to enter the connected state to activate the PDU session.
  • the UE can access the internet internet through the PDU session.
  • the negotiation with the high-level application server triggers the local low-latency and high-reliability communication service.
  • the application layer process is not detailed in this application.
  • Step (1) is triggered by the application layer, and the UE bottom layer communication module sends a Bridge session establish req message to the Bridge control through the established signaling connection of the gNB, which may be forwarded by the AMF, where the bridge service may be carried.
  • Type which can be at least one of the following three categories, typeA: bridged broadcasting, type B: bridged group communication, or type C: point-to-point communication type (bridged ptp) . It can also carry the service characteristic requirements of the bridging service, such as the range of transmission, QoS requirements (including delay, reliability, packet loss rate, rate, etc.).
  • For group communication you can also carry a group request that needs to create a group or join. The joining group needs to carry the identifier corresponding to the group. It can also carry the location information of the UE that needs to perform the service.
  • Step (2) After receiving the bridging session creation request, the Bridge control allocates a bridging identifier and/or a bridging group identifier to the UE according to the service type of the bridging session requested by the UE, and the identifier may be a chain defined in the mobile network.
  • the road layer identification information can also be replaced by the IP address of the intranet.
  • the Bridge control can initiate a parameter configuration process with the U-bridge, and the Bridge control can determine the U-bridge based on the service type of the bridged session or the location of the UE (such as cell, geographic coordinates, or location area information).
  • the U-bridge configuration request message may carry one of the following information: type of bridging service, bridging identification information corresponding to the UE, D-bridge bridging rule, interface transmission configuration information of U-bridge and gNB, and U-bridge and D-bridge
  • the interface transmits configuration information, QoS information of the service, and the like.
  • the service bridging rule is a mapping rule between the above target information and D-Bridge. If the corresponding service bridging rules are already configured on the U-bridge, no configuration is required. After receiving the U-Bridge, the U-Bridge returns a U-bridge configuration response message, which can carry the transmission configuration information of the interface between the U-bridge and the gNB and the D-Bridge.
  • Step (3) For the scenario where the D-Bridge and U-Bridge are deployed separately, the Bridge control can initiate the configuration process for one or more D-Bridges. If the D-Bridge has been configured, the D-bridge bridging rules configured for the U-bridge can find the corresponding bridge D-Bridge, then the D-Bridge configuration can be omitted. Usually, the D-Bridge is responsible for one or more D-BS areas, and some D-BSs may overlap between different D-Bridges. The configuration between the D-Bridge and the D-BS and the overlapping relationship between the D-Bridge and the D-Bridge are network planning problems, and the present application does not limit the application.
  • the Bridge control completes the configuration by sending a D-Bridge configuration message to the corresponding D-Bridge.
  • the message contains at least one of the following information: U-bridge Configuration information of the interface with the gNB, configuration information of the interface of the U-bridge and the D-bridge, D-BS service bridging rules, interface transmission configuration information of one or more D-BSs (in this figure, gNB) (for Unicast transmission), the supported bridge group ID, the type of QoS that needs to be supported, and so on.
  • FIG 18 shows a typical scenario where U-bridge and D-bridge are deployed together.
  • the U-Bridge and D-Bridge functions are combined to form an RGW node.
  • the configuration process of U-bridge and D-bridge can be combined into one process.
  • FIG. 19 shows a scenario in which the CU and the RGW of the upper layer protocol are unified after the CU/DU is separated by the gNB, and the DU completes the functions of the D-BS and the U-BS.
  • Figure 20 shows a scenario in which the gNB and the RGW are integrated.
  • Step (4) Bridge control can also configure the D-BS corresponding to the D-bridge by establishing the request #1 (ie gNB#2 in the figure). If the multicast mode is adopted, the transmission configuration includes the IP multicast destination address, the IP source address (the IP address of the D-bridge), and the downlink multicast tunnel identifier. If you are using unicast mode, you only need to send the IP address of the D-bridge and the tunnel ID of the U-bridge. It is then answered by the D-BS. If the unicast mode also needs to carry the interface configuration information of the D-BS, the D-bridge is updated by the Bridge control through the D-Bridge update message. If the U-Bridge corresponds to multiple D-bridges, then (3) and (4) can be repeated.
  • the request #1 ie gNB#2 in the figure.
  • Step (5) After configuring the U-bridge, D-bridge and the corresponding D-BS, the Bridge control can complete the U-BS and U-Bridge interface configuration by establishing a request response #1 message, which carries the U-Bridge.
  • the transmission configuration corresponding to the interface further carries the QoS information corresponding to the U-Uu and the bridge identifier carrying the UE.
  • the U-BS returns its corresponding uplink interface transmission configuration through the uplink interface setup request message.
  • the gNB ie, gNB#1 in which the optional UE is located is also the D-DS corresponding to the N-bridge, and the bridge can implement the configuration of the gNB corresponding downlink interface by the process described in the above (4).
  • the configuration information in the corresponding downlink interface setup request may also be sent to the gNB together with the uplink interface setup request.
  • Step (6) sends a bridge session creation response to the UE by the Bridge control. It carries the bridging (group) identifier of the UE, and the possible UBAP/DBAP packet format, including information that the packet header may carry.
  • the gNB triggers the corresponding Uu interface RRC configuration, which is used to configure the dedicated radio bearers of the corresponding U-Uu and D-Uu on the Uu.
  • the U-Uu is transmitted based on the bearer mode of the dedicated unicast (the RRC message can carry the air interface identifier dedicated to the UE), and the D-Uu can be a unicast bearer or a multicast or broadcast bearer (the RRC message carries the corresponding air interface multicast). Identification).
  • Different QoS services can be sent through different radio bearers, and the air interface is configured with different logical channels.
  • Different QoS services that are sent by the D-Uu in multicast mode can be distinguished by the air interface multicast identifier.
  • the UE For the area multicast, the UE sends the UBAP PDU through the uplink bridge dedicated radio bearer.
  • the source information in the UBAP header is the bridging identifier of the UE, and the target information is the multicast area indication.
  • the multicast is performed within a specified distance (for example, 100 m). .
  • the gNB After receiving the gNB, the gNB sends it to the U-bridge through the Nx interface.
  • the U-bridge determines the corresponding D-Bridge according to the location of the UE and the multicast range of the specified distance (for example, 100 m).
  • the D-bridge determines the corresponding multicast gNB according to its Dst info, and sends the corresponding PDU to the gNB through the multicast mode, optionally carrying the synchronous transmission time identifier.
  • the multiple gNBs send the data according to the synchronous transmission time identifier, and send the data to the UEs in the coverage area with the same air interface multicast identifier in the corresponding multicast air interface channel.
  • the UE can carry the group identifier in the dst info of the uplink UBAP header. If the UBAP does not carry the group identifier, the U-bridge can also be added in the BAP. U-Bridge is sent to the corresponding D-Bridge based on the D-Bridge information of the group member. The bridge relationship of the D-Bridge where the group member is located is sent by the Bridge control when the U-bridge is configured, and then updated after the change.
  • 21 is a process of switching a U-bridge change and a group bridge relationship when a target information is changed.
  • a base station that may be responsible for transmitting a bridge control, an indication of a bridge area change is required.
  • the UE sends a measurement report to the gNB, reporting that a new cell signal is better than the currently sitting serving cell, and the gNB decides whether to initiate a handover and replace it with a cell with a better signal.
  • the bridge area update can be sent to the bridge control before the handover process occurs (such as before the handover request is initiated to the new base station) or after the handover is completed (the new base station indicates that the UE has accessed its lower cell).
  • Area update message indicating the change of the group bridge area.
  • Another trigger mechanism is that the UE directly notifies the bridge control, and when the UE thinks that its cell or location changes, the bridge control is notified by the bridge area update message.
  • the bridge control informs the u-bridge corresponding to the group that the bridge area needs to be updated by the bridge area update message, so that the UE can also receive the bridge data of the group after the new area is reached.
  • the UE moves, causing a new U-bridge to be added or deleting its original U-bridge, there is a bridge control. If the U-bridge before the update still has data not sent, it can be forwarded to the updated U-bridge.
  • the first forwarding device can enable the first forwarding device to obtain the first data by using the information of the terminal device or the area to which the first data needs to be sent according to the information of the first terminal device. Sending to the terminal device or area, so that the first forwarding device does not need to send the first data to a device such as a server for implementing the routing addressing function, thereby reducing the transmission delay.
  • FIG. 22 is a schematic diagram 1 of a communication device 10 according to an embodiment of the present application.
  • the communication device 10 may be a terminal device (for example, the terminal device #A or the terminal device # ⁇ ). It can be a chip or a circuit, such as a chip or circuit that can be placed in a terminal device.
  • the terminal device may correspond to the terminal device in the foregoing method.
  • the communication device 10 can include a processor 11 (ie, an example of a processing unit) and a memory 12.
  • the memory 12 is configured to store instructions for executing the instructions stored by the memory 12 to enable the apparatus 20 to implement a terminal device in the corresponding method of FIG. 2 (eg, the terminal device #A or the terminal device # ⁇ ) The steps performed.
  • the communication device 10 may further include an input port 13 (ie, an example of a communication unit) and an output port 14 (ie, another example of a communication unit).
  • the processor 11, memory 12, input port 13 and output port 14 can communicate with one another via internal connection paths to communicate control and/or data signals.
  • the memory 12 is configured to store a computer program, and the processor 11 can be used to call and run the computer program from the memory 12 to control the input port 13 to receive signals, and control the output port 14 to send signals to complete the terminal device in the above method.
  • the memory 12 can be integrated in the processor 11 or can be provided separately from the processor 11.
  • the input port 13 is a receiver
  • the output port 14 is a transmitter.
  • the receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.
  • the input port 13 is an input interface
  • the output port 14 is an output interface
  • the functions of the input port 13 and the output port 14 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • the processor 11 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.
  • the terminal device provided by the embodiment of the present application may be implemented by using a general-purpose computer.
  • the program code that implements the functions of the processor 11, the input port 13, and the output port 14 is stored in the memory 12, and the general purpose processor implements the functions of the processor 11, the input port 13, and the output port 14 by executing the code in the memory 12.
  • the processor 11 is configured to generate a first data packet, where the first data packet carries the first data, and the first data packet includes a target field, where the target field is carried.
  • the information is used to determine target information, where the target information includes information of at least one second terminal device or information of a first area, where the second terminal device is a terminal device to which the first data needs to be sent, the first The area to which the first data needs to be broadcasted; and the processor 11 is configured to send the first data packet to the first forwarding device in the mobile network through the output port 14.
  • the target field is located in a protocol data unit PDU of the first protocol layer corresponding to the first data packet, where the first protocol layer includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, and a medium. Access controls at least one layer in the MAC layer.
  • the first protocol layer includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, and a medium.
  • Access controls at least one layer in the MAC layer.
  • the target information is carried in the target field.
  • the information carried in the target field is empty or a preset preset value, where the target information is determined by the first forwarding device according to the information of the first terminal device, where the first terminal device
  • the information includes the context information of the first terminal device, the location information of the first terminal device, and at least one of the cell information of the cell in which the first terminal device is located.
  • the information of the second terminal device includes a device identifier of the second terminal device or a group identifier of the terminal device group to which the second terminal device belongs.
  • the information of the first area includes mobile network information of the first area or geographic location information of the first cell.
  • modules or units in the communication device 10 listed above are merely exemplary.
  • the modules or units in the communication device 10 may be used to perform various actions or processes performed by the terminal device in the above method, where In order to avoid redundancy, a detailed description thereof will be omitted.
  • FIG. 23 is a schematic structural diagram of a terminal device 20 provided by the present application. For the convenience of explanation, FIG. 23 shows only the main components of the terminal device. As shown in FIG. 23, the terminal device 20 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, in the embodiment of the indication method for supporting the terminal device to perform the foregoing transmission precoding matrix.
  • the memory is primarily used to store software programs and data, such as the codebooks described in the above embodiments.
  • the control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 23 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, and the like.
  • the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control and execute the entire terminal device.
  • the processor in FIG. 23 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus.
  • the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and control circuit having the transceiving function can be regarded as the transceiving unit 201 of the terminal device 20, and the processor having the processing function is regarded as the processing unit 202 of the terminal device 20.
  • the terminal device 20 includes a transceiving unit 201 and a processing unit 202.
  • the transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like.
  • the device for implementing the receiving function in the transceiver unit 201 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 201 is regarded as a sending unit, that is, the transceiver unit 201 includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • FIG. 24 is a schematic diagram 2 of a device 30 for communication according to an embodiment of the present application.
  • the device 30 may be a network device (for example, the network device #A) or a chip. Or a circuit, such as a chip or circuit that can be placed in a network device.
  • the network device corresponds to the forwarding device in the foregoing method (for example, the access network device #A or the core network device # ⁇ ).
  • the apparatus 30 can include a processor 31 (ie, an example of a processing unit) and a memory 32.
  • the memory 32 is configured to store instructions for executing the instructions stored by the memory 32 to cause the apparatus 30 to implement the forwarding device (eg, access network device #A or core network device # ⁇ ) in the foregoing method.
  • the forwarding device eg, access network device #A or core network device # ⁇
  • the device 30 may further include an input port 33 (ie, an example of a communication unit) and an output port 33 (ie, another example of the processing unit).
  • the processor 31, memory 32, input port 33, and output port 34 can communicate with one another via internal connection paths to communicate control and/or data signals.
  • the memory 32 is configured to store a computer program, and the processor 31 can be configured to call and run the computer program from the memory 32 to control the input port 33 to receive the first data packet, where the first data packet carries the first data packet.
  • the first data packet includes a target field, where information carried in the target field is used to determine target information, where the target information includes information of at least one second terminal device or Information of an area, the second terminal device is a terminal device to which the first data needs to be sent, an area to which the first data needs to be broadcasted; and the processor 31 is further configured to control
  • the output port 34 sends a second data packet according to the target information, where the second data packet carries the first data.
  • the target field is located in a protocol data unit PDU of the first protocol layer corresponding to the first data packet, where the first protocol layer includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, and a medium. Access controls at least one layer in the MAC layer.
  • the first protocol layer includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, and a medium.
  • Access controls at least one layer in the MAC layer.
  • the target information is carried in the target field.
  • the method further includes: determining, by the first forwarding device, the target information according to the information of the first terminal device,
  • the information of the first terminal device includes at least one of the context information of the first terminal device, the location information of the first terminal device, and the cell information of the cell in which the first terminal device is located.
  • the information of the second terminal device includes a device identifier of the second terminal device or a group identifier of the terminal device group to which the second terminal device belongs.
  • the information of the first area includes mobile network information of the first area or geographic location information of the first cell.
  • the processor 31 is further configured to control, by the output port 34, the second data packet to be sent to a second forwarding device in the mobile network according to the target information, where the second forwarding device is capable of The second terminal device communicates, or the coverage of the second forwarding device includes the first area.
  • the processor 31 is further configured to encapsulate the quality of service QoS information corresponding to the first data and/or the sending time information of the first data into the second data packet.
  • the processor 31 is further configured to determine, by the configuration information, a forwarding device that serves the second terminal device as the second forwarding device, where the configuration information is used to indicate that the second device is included
  • the processor 31 determines, by the configuration information, a forwarding device that serves the second terminal device as the second forwarding device, where the configuration information is used to indicate that the second device is included
  • the processor 31 is further configured to determine, by the forwarding device that includes the first area, that the coverage area indicated by the configuration information is the second forwarding device, where the configuration information is used to indicate that the second forwarding device is included The area covered by each of the plurality of forwarding devices within the forwarding device.
  • the configuration information is obtained by the device 30 from the control device, where the configuration information is determined by the control device according to status information reported by each of the plurality of forwarding devices, where The status information reported by each forwarding device is used to indicate the terminal device served by the forwarding device or the area covered by the forwarding device.
  • the device 30 is configured with multiple ports, where each port is used for communication between the first forwarding device and at least one forwarding device.
  • the processor 31 is further configured to Determining, by the target information, a first port from the plurality of ports, wherein the first port is a communication between the first forwarding device and the second forwarding device; optionally, the processor 31 is further configured to control, by the output port 34, the second data packet to be sent to the second forwarding device by using the first port.
  • the apparatus 30 includes an access network device or a core network device communicatively coupled to the first terminal device.
  • the functions of the input port 33 and the output port 34 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • the processor 31 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.
  • a network device provided by an embodiment of the present application may be implemented by using a general-purpose computer.
  • the program code that implements the functions of the processor 31, the input port 33, and the output port 34 is stored in a memory, and the general purpose processor implements the functions of the processor 31, the input port 33, and the output port 34 by executing code in the memory.
  • modules or units in the communication device 30 listed above are merely exemplary. Each module or unit in the communication device 30 may be used to perform various actions or processes performed by the forwarding device in the above method, where In order to avoid redundancy, a detailed description thereof will be omitted.
  • FIG. 25 is a schematic structural diagram of a forwarding device 40 according to an embodiment of the present disclosure, which may be used to implement the functions of a forwarding device (for example, access network device #A or core network device # ⁇ ) in the foregoing method.
  • the forwarding device 40 includes one or more radio frequency units, such as a remote radio unit (RRU) 401 and one or more baseband units (BBUs) (also referred to as digital units, DUs). 402.
  • RRU 401 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 4011 and a radio frequency unit 4012.
  • the RRU 401 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting the signaling messages described in the foregoing embodiments to the terminal device.
  • the BBU 402 portion is mainly used for performing baseband processing, controlling a base station, and the like.
  • the RRU 401 and the BBU 402 may be physically disposed together or physically separated, that is, distributed base stations.
  • the BBU 402 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spreading, and the like.
  • the BBU (processing unit) 402 can be used to control the base station 40 to perform the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 402 may be composed of one or more boards, and multiple boards may jointly support a single access standard radio access network (such as an LTE system or a 5G system), or may support different ones. Access to the standard wireless access network.
  • the BBU 402 also includes a memory 4021 and a processor 4022.
  • the memory 4021 is used to store necessary instructions and data.
  • the memory 4021 stores the codebook or the like in the above embodiment.
  • the processor 4022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.
  • the memory 4021 and the processor 4022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
  • SoC System-on-chip
  • all or part of the functions of the 402 part and the 401 part may be implemented by the SoC technology, for example, by a base station function chip.
  • the base station function chip integrates a processor, a memory, an antenna interface and the like.
  • the program of the base station related function is stored in the memory, and the processor executes the program to implement the related functions of the base station.
  • the base station function chip can also read the memory external to the chip to implement related functions of the base station.
  • FIG. 25 It should be understood that the structure of the forwarding device illustrated in FIG. 25 is only one possible form, and should not be construed as limiting the embodiments of the present application. This application does not preclude the possibility of other forms of base station architecture that may arise in the future.
  • the embodiment of the present application further provides a communication system including the foregoing network device and one or more terminal devices.
  • the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM random access memory
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic randomness synchronous dynamic randomness.
  • Synchronous DRAM SDRAM
  • DDR SDRAM double data rate synchronous DRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory Take memory
  • DR RAM direct memory bus random access memory
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer instructions or computer programs.
  • the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains one or more sets of available media.
  • the usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium.
  • the semiconductor medium can be a solid state hard drive.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

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Abstract

本申请提供了一种通信方法和通信装置，该通信方法包括：移动网络中的第一转发设备接收第一数据包，该第一数据包携带有来自第一终端设备的第一数据，并且，该第一数据包中包括目标字段，该目标字段中承载的信息用于确定目标信息，该目标信息包括至少一个第二终端设备的信息或第一区域的信息，该第二终端设备是该第一数据需要发送至的终端设备，该第一区域为该第一数据需要广播至的区域；该第一转发设备根据该目标信息发送第二数据包，该第二数据包携带有该第一数据，从而，无需使该第一转发设备将该第一数据发送至用于实现路由寻址功能的服务器等设备，从而，能够减小传输时延。

Description

通信方法和通信设备
本申请要求于2017年12月29日提交中国专利局、申请号为201711473663.5、申请名称为“通信方法和通信设备”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
本申请涉及通信领域，并且，更具体地，涉及通信方法和通信装置。
背景技术
目前，已知一种通信技术，当终端设备#A在需要通过移动网络需要向终端设备#B发送数据包时，终端设备#A需要将该数据包发送给移动网络中为该终端设备#A服务的接入网设备#A，接入网设备#A将该数据包经由核心网设备#A发送给服务器，服务器从该数据包的IP层获得该数据包的目的地址(用于指示终端设备#B)，进而可以根据该目的地址将该数据包发送给为该终端设备#B的核心网络设备#B，核心网设备#B可以将该数据包发送给为该终端设备#B服务的接入网设备#B，从而接入网设备#B可以将该数据包发送给接终端设备#B。
上述现有技术由于数据包需要经过多个设备的转发，导致传输时延较大。随着通信技术的发展，通信业务的类型也逐渐增多，出现了对传输时延较高的业务，例如，车联网业务要求传输时延较小。如何减小传输时延称为业界亟需解决的问题。
发明内容
本申请提供一种通信方法和通信设备能够减小传输时延。
第一方面，提供了一种通信方法，包括：移动网络中的第一转发设备接收第一数据包，该第一数据包携带有来自第一终端设备的第一数据，并且，该第一数据包中包括目标字段，该目标字段中承载的信息用于确定目标信息，该目标信息包括至少一个第二终端设备的信息或第一区域的信息，该第二终端设备是该第一数据需要发送至的终端设备，该第一区域该第一数据需要广播至的区域；该第一转发设备根据该目标信息发送第二数据包，该第二数据包携带有该第一数据。
根据本申请实施例的方案，通过使第一转发设备从携带有第一数据的数据包中获取该第一数据所需要发送至的终端设备或区域的信息，能够基于该信息将该第一数据发送至该终端设备或区域，从而，无需使该第一转发设备将该第一数据发送至用于实现路由寻址功能的服务器等设备，从而，能够减小传输时延。
可选地，目标字段位于该第一数据包对应的第一协议层的协议数据单元PDU中，该第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
从而，转发设备仅需在层2对数据包进行解析，便能够获得目标字段承载的信息，较从数据包的层3获取数据包的IP地址等路由信息等方式相比，无需在转发设备内配置针对层3的解析实体，能够减小转发设备的处理负担，提高本申请的兼容性和实用性。
可选地，该目标字段中携带有该目标信息。
可选地，当该目标字段中承载的信息为空或规定的预设值时，该方法还包括：该第一转发设备根据该第一终端设备的信息确定该目标信息。
可选地，该第一终端设备的信息包括该第一终端设备的上下文信息、该第一终端设备的位置信息，该第一终端设备所处于的小区的小区信息中的至少一种信息。
可选地，该第一终端设备的信息包括该第一终端设备的标识信息。
可选地，该第一终端设备的信息包括该第一终端设备所对应的承载的指示信息。
可选地，该方法还包括：该第一转发设备获取映射关系信息，该映射关系信息用于指示至少一个终端设备的信息与至少一个路由信息之间的对应关系，以及该第一转发设备根据该第一终端设备的信息确定该目标信息包括：该第一转发设备将映射关系指示的与该第一终端设备的信息对应的路由信息确定为目标信息。
通过使转发设备在确定目标字段中承载的信息为空或规定的预设值时，根据该第一终端设备的信息自行确定目标信息，能够在使终端设备无需在数据包中添加目标信息的情况下完成本申请的过程，从而，能够减小终端设备的处理负担，提高本申请的兼容性和实用性。
可选地，第二终端设备的信息包括该第二终端设备的设备标识或该第二终端设备所属于的终端设备群组的群组标识。
可选地，该第一区域的信息包括该第一区域的移动网络信息或该第一小区的地理位置信息。
可选地，当该第一转发设备能够与该第二终端设备通信时，该第一转发设备根据该目标信息发送第二数据包，包括：该第一转发设备根据该目标信息，向该第二终端设备发送该第二数据包。
可选地，当该第二转发设备的覆盖范围包括该第一区域时，该第一转发设备根据该目标信息发送第二数据包，包括：该第一转发设备根据该目标信息，向该第一区域广播该第二数据包。
可选地，当该第一转发设备不能与该第二终端设备通信，或该第二转发设备的覆盖范围包括该第一区域时，该第一转发设备根据该目标信息发送第二数据包，包括：该第一转发设备根据该目标信息，向移动网络中的第二转发设备发送该第二数据包，其中，该第二转发设备能够与该第二终端设备通信，或该第二转发设备的覆盖范围包括该第一区域。
可选地，在该第一转发设备向该第二转发设备发送第二数据包之前，该方法还包括：
该第一转发设备将该第一数据对应的服务质量QoS信息和/或该第一数据的发送时间信息封装入该第二数据包。
从而，能够使第二转发设备从该第二数据包中确定第一数据对应的QOS信息和发送时间信息，并基于该QOS信息和发送时间信息对第一数据进行发送，从而，满足第一数据对QOS和发送时间的要求，能够提高用户体验。
可选地，在该第一转发设备根据该目标信息发送第二数据包之前，该方法还包括：该 第一转发设备将配置信息指示的为该第二终端设备服务的转发设备确定为该第二转发设备，其中，该配置信息用于指示包括该第二转发设备在内的多个转发设备中的每个转发设备所服务的终端设备。
可选地，在该第一转发设备根据该目标信息发送第二数据包之前，该方法还包括：该第一转发设备将配置信息指示的覆盖范围包括该第一区域的转发设备确定为该第二转发设备，该配置信息用于指示包括该第二转发设备在内的多个转发设备中的每个转发设备所覆盖的区域。
可选地，该配置信息是该第一转发设备从控制设备获取的，该配置信息是该控制设备根据该多个转发设备中的每个转发设备上报的状态信息确定的，其中，每个转发设备上报的状态信息用于指示该转发设备所服务的终端设备或该转发设备覆盖的区域。
从而，能够使第一转发设备能够容易地基于目标信息确定第二转发设备，能够进一步提高本申请的实用性和可靠性。
可选地，该第一转发设备中配置有多个端口，其中，每个端口用于该第一转发设备与至少一个转发设备之间的通信，以及该第一转发设备根据该目标信息，向移动网络中的第二转发设备发送第二数据包，包括：该第一转发设备根据该目标信息，从该多个端口中确定第一端口，其中，该第一端口是该第一转发设备与该第二转发设备之间的通信；该第一转发设备通过该第一端口，向该第二转发设备发送该第二数据包。
可选地，该第二转发设备包括与该第二终端设备通信连接的接入网设备或核心网设备，或该第二转发设备包括位于该第一区域的接入网设备或核心网设备。
可选地，该第一转发设备包括与该第一终端设备通信连接的接入网设备或核心网设备。
第二方面，提供了一种通信方法，包括：第一终端设备生成第一数据包，该第一数据包携带有第一数据，并且，该第一数据包中包括目标字段，该目标字段中承载的信息用于确定目标信息，该目标信息包括至少一个第二终端设备的信息或第一区域的信息，该第二终端设备是该第一数据需要发送至的终端设备，该第一区域该第一数据需要广播至的区域；该第一终端设备向移动网络中的第一转发设备发送该第一数据包。
根据本申请实施例的方案，通过在数据包中增加目标字段，该目标字段中携带的信息可以用于确定该第一数据所需要发送至的第二终端设备或第一区域，从而，能够使转发设备能够基于该目标信息将该数据包中的数据发送至该第二终端设备或第一区域，从而，无需使该转发设备将该数据发送至用于实现路由寻址功能的服务器等设备，从而，能够减小传输时延。
可选地，该目标字段位于该第一数据包对应的第一协议层的协议数据单元PDU中，该第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
可选地，该目标字段中携带有该目标信息。
可选地，该目标字段中承载的信息为空或规定的预设值，该目标信息是该第一转发设备根据该第一终端设备的信息确定的，该第一终端设备的信息包括该第一终端设备的上下文信息、该第一终端设备的位置信息，该第一终端设备所处于的小区的小区信息中的至少一种信息。
可选地，第二终端设备的信息包括该第二终端设备的设备标识或该第二终端设备所属于的终端设备群组的群组标识。
可选地，该第一区域的信息包括该第一区域的移动网络信息或该第一小区的地理位置信息。
第三方面，提供了一种通信方法，包括：移动网络中的第一转发设备在接收到携带有来自第一终端设备的第一数据的第一数据包时，根据该第一终端设备的信息，确定目标信息，该目标信息用于指示至少一个第二终端设备，或该目标信息用于指示至少一个第一区域，该第二终端设备是该第一数据需要发送至的终端设备，该第一区域该第一数据需要广播至的区域；该第一转发设备根据该目标信息发送第二数据包，该第二数据包携带有该第一数据。
根据本申请实施例的方案，通过使第一转发设备根据该第一终端设备的信息获取该第一数据所需要发送至的终端设备或区域的信息，能够使第一转发设备将该第一数据发送至该终端设备或区域，从而，无需使该第一转发设备将该第一数据发送至用于实现路由寻址功能的服务器等设备，从而，能够减小传输时延。
可选地，该第一终端设备的信息包括该第一终端设备的上下文信息、该第一终端设备的位置信息，该第一终端设备所处于的小区的小区信息中的至少一种信息。
可选地，该第一终端设备的信息包括该第一终端设备的标识信息。
可选地，该第一终端设备的信息包括该第一终端设备所对应的承载的指示信息。
可选地，该方法还包括：该第一转发设备获取映射关系信息，该映射关系信息用于指示至少一个终端设备的信息与至少一个路由信息之间的对应关系，以及该第一转发设备根据该第一终端设备的信息确定该目标信息包括：该第一转发设备将映射关系指示的与该第一终端设备的信息对应的路由信息确定为目标信息。
可选地，第二终端设备的信息包括该第二终端设备的设备标识或该第二终端设备所属于的终端设备群组的群组标识。
可选地，该第一区域的信息包括该第一区域的移动网络信息或该第一小区的地理位置信息。
可选地，当该第一转发设备能够与该第二终端设备通信时，该第一转发设备根据该目标信息发送第二数据包，包括：该第一转发设备根据该目标信息，向该第二终端设备发送该第二数据包。
可选地，当该第二转发设备的覆盖范围包括该第一区域时，该第一转发设备根据该目标信息发送第二数据包，包括：该第一转发设备根据该目标信息，向该第一区域广播该第二数据包。
可选地，当该第一转发设备不能与该第二终端设备通信，或该第二转发设备的覆盖范围包括该第一区域时，该第一转发设备根据该目标信息发送第二数据包，包括：该第一转发设备根据该目标信息，向移动网络中的第二转发设备发送该第二数据包，其中，该第二转发设备能够与该第二终端设备通信，或该第二转发设备的覆盖范围包括该第一区域。
可选地，在该第一转发设备向该第二转发设备发送第二数据包之前，该方法还包括：
该第一转发设备将该第一数据对应的服务质量QoS信息和/或该第一数据的发送时间信息封装入该第二数据包。
从而，能够使第二转发设备从该第二数据包中确定第一数据对应的QOS信息和发送时间信息，并基于该QOS信息和发送时间信息对第一数据进行发送，从而，满足第一数据对QOS和发送时间的要求，能够提高用户体验。
可选地，在该第一转发设备根据该目标信息发送第二数据包之前，该方法还包括：该第一转发设备将配置信息指示的为该第二终端设备服务的转发设备确定为该第二转发设备，其中，该配置信息用于指示包括该第二转发设备在内的多个转发设备中的每个转发设备所服务的终端设备。
可选地，在该第一转发设备根据该目标信息发送第二数据包之前，该方法还包括：该第一转发设备将配置信息指示的覆盖范围包括该第一区域的转发设备确定为该第二转发设备，该配置信息用于指示包括该第二转发设备在内的多个转发设备中的每个转发设备所覆盖的区域。
可选地，该配置信息是该第一转发设备从控制设备获取的，该配置信息是该控制设备根据该多个转发设备中的每个转发设备上报的状态信息确定的，其中，每个转发设备上报的状态信息用于指示该转发设备所服务的终端设备或该转发设备覆盖的区域。
从而，能够使第一转发设备能够容易地基于目标信息确定第二转发设备，能够进一步提高本申请的实用性和可靠性。
可选地，该第一转发设备中配置有多个端口，其中，每个端口用于该第一转发设备与至少一个转发设备之间的通信，以及该第一转发设备根据该目标信息，向移动网络中的第二转发设备发送第二数据包，包括：该第一转发设备根据该目标信息，从该多个端口中确定第一端口，其中，该第一端口是该第一转发设备与该第二转发设备之间的通信；该第一转发设备通过该第一端口，向该第二转发设备发送该第二数据包。
可选地，该第二转发设备包括与该第二终端设备通信连接的接入网设备或核心网设备，或该第二转发设备包括位于该第一区域的接入网设备或核心网设备。
可选地，该第一转发设备包括与该第一终端设备通信连接的接入网设备或核心网设备。
第四方面，提供了一种通信装置，包括用于执行上述第一方面或第三方面及其各实现方式中的通信方法的各步骤的单元。
在一种设计中，该通信装置为通信芯片，通信芯片可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
在另一种设计中，所述通信装置为移动网设备(例如，核心网设备或接入网设备等)，通信芯片可以包括用于发送信息或数据的发射机，以及用于接收信息或数据的接收机。
第五方面，提供了一种通信装置，包括用于执行上述第二方面以及第二方面的各实现方式中的通信方法的各步骤的单元。
在一种设计中，该通信装置为通信芯片，通信芯片可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
在另一种设计中，所述通信装置为终端设备，通信芯片可以包括用于发送信息或数据的发射机，以及用于接收信息或数据的接收机。
第六方面，提供了一种转发设备，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信设备执行第一或第 三方面及其各种可能实现方式中的通信方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选的，该转发设备还包括，发射机(发射器)和接收机(接收器)。
第七方面，提供了一种终端设备，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信设备执行第二方面及其各种实现方式中的通信方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选的，该终端设备还包括，发射机(发射器)和接收机(接收器)。
第八方面，提供了一种通信系统，上述终端设备和转发设备。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面至第三方面中任一种可能实现方式中的方法。
第十方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第三方面中任一种可能实现方式中的方法。
第十一方面，提供了一种芯片系统，包括存储器和处理器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得安装有该芯片系统的通信设备执行上述第一方面至第三方面中任一种可能实现方式中的方法。
其中，该芯片系统可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
第十二方面，提供了一种通信系统，包括上述终端设备和/或转发设备。
在一个可能的设计中，该通信系统还可以包括本申请实施例提供的方案中与终端设备或转发设备进行交互的其他设备。
根据本申请实施例的方案，通过使第一转发设备根据该第一终端设备的信息获取该第一数据所需要发送至的终端设备或区域的信息，能够使第一转发设备将该第一数据发送至该终端设备或区域，从而，无需使该第一转发设备将该第一数据发送至用于实现路由寻址功能的服务器等设备，从而，能够减小传输时延。
附图说明
图1是本申请的转发设备的配置方式的一例的示意图。
图2是本申请的转发设备的配置方式的另一例的示意图。
图3是本申请的转发设备的配置方式的再一例的示意图。
图4是本申请的转发设备的配置方式的再一例的示意图。
图5是本申请的转发设备的配置方式的再一例的示意图。
图6是本申请的转发设备的配置方式的再一例的示意图。
图7是本申请的转发设备的配置方式的再一例的示意图。
图8是本申请的移动网络的结构的一例的示意图。
图9是本申请的通信方法的一例的意义性交互图。
图10是本申请的具有目标字段的PDU的一例的示意图。
图11是本申请的通信方法的另一例的意义性交互图。
图12是本申请的接入网设备与核心网设备的配置方式的一例的示意图。
图13是本申请的转发设备的配置方式的再一例的示意图。
图14是本申请的转发设备的配置方式的再一例的示意图。
图15是本申请的转发设备的配置方式的再一例的示意图。
图16是本申请的移动网络的结构的再一例的示意图。
图17是本申请的通信方法的再一例的意义性交互图。
图18是本申请的移动网络的结构的再一例的示意图。
图19是本申请的移动网络的结构的再一例的示意图。
图20是本申请的移动网络的结构的再一例的示意图。
图21是本申请的通信方法的再一例的意义性交互图。
图22是本申请实施例的通信装置的一例的示意性框图。
图23是本申请实施例的通信装置的一例的示意性结构。
图24是本申请实施例的通信装置的另一例的示意性框图。
图25是本申请实施例的通信装置的一例的示意性结构。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
在本申请中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，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。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车联网(Vehicle To Everything，V2X)通信，例如，车到车(Vehicle to Vehicle，V2V)通信、车到基础设施(Vehicle to Infrastructure，V2I)通信，车到行人(Vehicle to Pedestrian，V2P)通信，车道网络(Vehicle to Network，V2N)通信。
本申请实施例结合终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、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。终端设备可以是WLAN中的站点(STAION，ST)，可以是蜂窝电话、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、个人数字处理(Personal Digital Assistant，PDA)设备、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、车联网终端、电脑、膝上型计算机、手持式通信设备、手持式计算设备、卫星无线设备、无线调制解调器卡、电视机顶盒(set top box，STB)、用户驻地设备(customer premise equipment，CPE)和/或用于在无线系统上进行通信的其它设备以及下一代通信系统，例如，5G网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，在本申请实施例中，终端设备还可以是物联网(Internet of Things，IoT)系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
本申请实施例结合转发设备描述了各个实施例。在本申请实施例中，转发设备可以是具有转发功能的实体或模块，随后结合数据传输的过程对该转发设备的功能进行详细说明。
下面，对本申请实施例的转发设备的配置方式进行详细说明，在本申请实施例中，转发设备配置在移动网络中，即，转发设备可以是移动网络中的网元，或者，转发设备可以是移动网络中的网元上的功能模块。
作为示例而非限定，可以采用以下任意方式配置转发设备。
方式1
在本申请实施例中，该转发设备可以配置在或本身即为接入网设备，或者说，接入网设备可以具有本申请的转发设备的功能，并可以执行转发设备的动作。
其中，接入网(Access Network，AN)由业务节点接口(Service Network Interface， SNI)和用户-网络接口(user network interface，UNI)之间的一系列传送实体(如：线路设备和传输设施)组成，为供给电信业务而提供所需传送承载能力的实施系统，可经由管理接口(Q3)配置和管理。原则上对接入网可以实现的UNI和SNI的类型和数目没有限制。接入网不解释信令，接入网可以看成是与业务和应用无关的传送网，主要完成交叉连接、复用和传输功能。
接入网设备可以包括接入网/无线接入网(Radio Access Network，RAN)设备，由多个5G-RAN节点组成的网络，该5G-RAN节点可以为：接入节点(access point，AP)、下一代新基站(NR nodeB，gNB)、下一代演进型基站(ng-eNB，gNB)、收发点(transmission receive point，TRP)、传输点(transmission point，TP)或某种其它接入节点。5G-RAN节点内部又可以分为集中单元(central unit，CU)和分布式单元(distributed unit，DU)。
此外，接入网设备还可以是SM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及未来5G网络中的接入网设备或者未来演进的PLMN网络中的接入网设备等，本申请并未特别限定。
需要说明的是，在本申请实施例中，接入网设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与接入网设备进行通信，该小区可以是接入网设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
此外，LTE系统或5G系统中的载波上可以同时有多个小区同频工作，在某些特殊场景下，也可以认为上述载波与小区的概念等同。例如在载波聚合(Carrier Aggregation，CA)场景下，当为UE配置辅载波时，会同时携带辅载波的载波索引和工作在该辅载波的辅小区的小区标识(Cell Indentify，Cell ID)，在这种情况下，可以认为载波与小区的概念等同，比如UE接入一个载波和接入一个小区是等同的。
方式2
在本申请实施例中，该转发设备可以配置在或本身即为核心网设备，或者说，核心网设备可以具有本申请的转发设备的功能，并可以执行转发设备的动作。
其中，核心网的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。用户连接的建立包括移动性管理(mobile management，MM)、呼叫管理(connection management，CM)、交换/路由、录音通知等功能。用户管理包括用户的描述、服务质量(Quality of Service，QoS)、用户通信记录(accounting)、虚拟归属环境(virtual home environment，VHE)和安全性(由鉴权中心提供相应的安全性措施包含了对移动业务的安全性管理和对外部网络访问的安全性处理)。承载连接(access)包括到外部的公共交换电话网络(Public Switched Telephone Network，PSTN)、外部电路数据网和分组数据网、互联网络(internet)和内联网(intranets)、以及移动网络自身的手机短信服务(Short Message Service，SMS)服务器等等。
核心网可以提供的基本业务包括移动办公、电子商务、通信、娱乐性业务、旅行和基 于位置的服务、遥感业务(telemetry)－简单消息传递业务(监视控制)等等。
作为示例而非限定，核心网设备可以包括：接入和移动性管理功能(access&mobility function，AMF)、会话管理功能(session management function，SMF)、策略控制功能(policy control function，PCF)、用户面功能(user plane function，UPF)等功能单元，这些功能单元可以独立工作，也可以组合在一起实现某些控制功能，如：AMF、SMF和PCF可以组合在一起作为管理设备，用于完成终端设备的接入鉴权、安全加密、位置注册等接入控制和移动性管理功能，以及用户面传输路径的建立、释放和更改等会话管理功能，以及分析一些切片(slice)相关的数据(如拥塞)、终端设备相关的数据的功能，UPF主要完成用户面数据的路由转发等功能，如：负责对终端设备的数据报文过滤、数据传输/转发、速率控制、生成计费信息等。
方式3
该转发设备也可以是与移动网络中独立配置的设备，并且，在转发设备可以与接入网设备或核心网设备通信连接(例如，通过有线方式或无线方式连接)，从而，能够使转发设备通过接入网设备或核心网设备与终端设备进行通信。
应理解，以上列举的转发设备的配置方式仅为示例性说明，本申请并未限定于此，在能够实现本申请的转发设备的功能的情况下，可以对转发设备的具体配置形式进行任意变更，例如，转发设备也可以配置于网关设备或路由器等设备中。
另外，在移动网络中可以配置多个转发设备，并且，不同转发设备之间可以通信连接(例如，通过有线方式或无线方式连接)。
在本申请实施例中，移动网络中的两个终端设备(不失一般性，记作终端设备#1和终端设备#2)之间的数据传输需要经过至少一个转发设备的转发，即，设终端设备#1与转发设备#1通信连接，其中，终端设备#1与转发设备#1的通信连接可以是直接连接，也可以是间接连接，例如，终端设备#1与转发设备#1可以通过接入网设备或核心网设备进行通信，从而，该终端设备#1在需要向终端设备#2发送数据#1时，可以将该数据#1发送给转发设备#1。
在本申请实施例中，上述向数据#1的发送过程可能存在以下两种情况。
情况1
如果转发设备#1能够与为终端设备#2服务的接入网设备或核心网设备直接通信，则转发设备#1可以将该数据#1发送给为终端设备#2服务的接入网设备或核心网设备。
图1示出了情况1下，转发设备#1在移动网络中可能的配置方式的一例。
如图1所示，转发设备#1可以与接入网设备#1和接入网设备#2(为终端设备#2服务的接入网设备)通信连接。
应理解图1所示的配置方式仅为能够实现情况1的配置方式的示例性说明，本申请并未特别限定于此，例如，转发设备#1可以经由核心网设备与接入网设备#1通信连接，或者，转发设备#1可以经由核心网设备与接入网设备#2通信连接。
另外，尽管图1仅示出了转发设备#1与两个接入网设备连接的情况，但本申请并未限定于此，转发设备#1可以与任意数量的接入网设备连接。
此外，在本申请实施例中，转发设备与接入网之间可以配置有通信接口，该通信接口可以通过用于实现现有技术中移动网络中网元之间的通信的接口相似，这里，为了避免赘 述，省略其详细说明。
情况2
如果转发设备#1不能够与终端设备#2(或者，为终端设备#2服务的接入网设备或核心网设备)直接通信，则转发设备#1可以将该数据#1发送给能够与终端设备#2通信的转发设备#2，并由转发设备#2将该数据#1发送给终端设备#2。其中，终端设备#2与转发设备#2通信连接，其中，终端设备#2与转发设备#2的通信连接可以是直接连接，也可以是间接连接，例如，终端设备#2与转发设备#2可以通过接入网设备或核心网设备进行通信。
即，在本申请实施例中，移动网络中的多个(两个或两个以上)转发设备之间可以通信连接。
下面，以上述转发设备#1与转发设备#2的配置关系为例，对本申请中能够(直接或间接)通信的两个转发设备的配置方式进行说明。
图2示出了情况2下，转发设备#1和转发设备#2在移动网络中可能的配置方式的一例。如图3所示，转发设备#1和转发设备#2可以独立设置，并且，转发设备#1和转发设备#2之间可以通过线缆通信连接。或者，转发设备#1和转发设备#2之间可以无线通信方式通信连接，例如，转发设备#1和转发设备#2之间可以配置有通信接口，该通信接口可以通过用于实现现有技术中移动网络中网元之间的通信的接口相似，这里，为了避免赘述，省略其详细说明。
在图2所示方式中，转发设备#1可以与接入网设备#1独立配置，此情况下，转发设备#1可以为例如核心网设备，或者，转发设备#1可以是独立于核心网设备的实体。
并且，转发设备#2可以与接入网设备#2的配置关系可以与转发设备#1可以与接入网设备#1的配置关系相似。
另外，图2所示的一个转发设备所连接的接入网设备的数量仅为示例性说明，本申请并未限定于此，转发设备可以与任意数量的接入网设备连接。
图3示出了情况2下，转发设备#1和转发设备#2在移动网络中可能的配置方式的另一例。与图2所示配置方式不同的是，在图3所示配置方式中，转发设备#1与转发设备#2可以配置在同一实体设备(或者说，物理设备)，例如核心网设备内。并且，此情况下，转发设备#1和转发设备#2可以通过例如，内部总线等通信连接。
图4示出了情况2下，转发设备#1和转发设备#2在移动网络中可能的配置方式的再一例。与图2所示配置方式不同的是，在图4所示配置方式中，转发设备#1与接入网设备#1可以配置在同一实体设备内，并且，此情况下，转发设备#1和接入网设备#1可以通过例如，内部总线等通信连接。类似地，转发设备#2与接入网设备#2可以配置在同一实体设备内。
图5示出了情况2下，转发设备#1和转发设备#2在移动网络中可能的配置方式的再一例。与图2所示配置方式不同的是，在图5所示配置方式中，转发设备#1和接入网设备#1可以是同一实体的不同功能模块。
图6示出了情况2下，转发设备#1和转发设备#2在移动网络中可能的配置方式的再一例。与图2所示配置方式不同的是，在图6所示配置方式中，转发设备#1、接入网设备#1和转发设备#2可以配置在同一实体设备内，并且，接入网设备#2可以与该实体设备独立部署。类似地，也可以使转发设备#2、接入网设备#1和转发设备#2可以配置在同一实 体设备内，并且，接入网设备#1可以与该实体设备独立部署。
应理解，以上列举的使移动网络中的多个(两个或两个以上)转发设备之间通信连接的方式，仅为实现不同终端设备之间的数据传输的一种可能的方式，本申请并未限定于此，例如，如图7所示，也可以是使每个接入网设备(或核心网设备)与多个转发设备通信连接，并且，时每个转发设备与多个接入网设备(或核心网设备)通信连接，从而，当图7所示的终端设备#1需要向终端设备#2发送数据时，该接入网设备#1可以向转发设备#1发送该数据。当所示的终端设备#1需要向终端设备#3或终端设备#4发送数据时，该接入网设备#1可以向转发设备#2发送该数据。从而，无需使转发设备之间通信连接。
应理解，以上列举的图2至图7所示的配置方式仅为示例性说明，本申请并未限定于此，例如，也可以将图2至图7中的接入网设备替换为核心网设备。
在本申请实施例中，终端设备或转发设备包括硬件层、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。
此外，本申请实施例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。
需要说明的是，在本申请实施例中，在应用层可以运行多个应用程序，此情况下，执行本申请实施例的通信方法的应用程序与用于控制接收端设备完成所接收到的数据所对应的动作的应用程序可以是不同的应用程序。
图8是当转发设备配置在接入网设备时适用本申请实施例的通信方法的系统的一例的示意图，如图8所示，终端设备#1和终端设备#2处于接入网设备#1(或者说，转发设备#1)提供的小区，终端设备#3处于接入网设备#2(或者说，转发设备#2)提供的小区，从而，当终端设备#1需要向终端设备#2发送数据时，接入网设备#1可以直接向终端设备#2发送该数据。当终端设备#1需要向终端设备#3发送数据时，接入网设备#1可以向接入网设备#2发送该数据，并由接入网设备#2将该数据发送至终端设备#3。
其中，每个接入网设备可包括一个或多个天线。另外，接入网设备可附加地包括发射 机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。
每个接入网设备可以与多个终端设备通信。
终端设备可以是例如蜂窝电话、智能电话、便携式电脑、手持通信设备、手持计算设备、卫星无线电装置、全球定位系统、PDA和/或用于在无线通信系统上通信的任意其它适合设备。
其中，接入网设备可以通过前向链路(也称为下行链路)向终端设备发送数据或信息，并通过反向链路(也称为上行链路)从终端设备接收数据或信息。
例如，在频分双工(Frequency Division Duplex，FDD)系统中，例如，前向链路可与反向链路使用不同的频带。
再例如，在时分双工(Time Division Duplex，TDD)系统和全双工(Full Duplex)系统中，前向链路和反向链路可使用相同频带。
被设计用于通信的每个天线(或者由多个天线组成的天线组)和/或区域称为接入网设备的扇区。
例如，可将天线组设计为与接入网设备覆盖区域的扇区中的终端设备通信。接入网设备可以通过单个天线或多天线发射分集向其对应的扇区内所有的终端设备发送信号。
在接入网设备通过前向链路与终端设备进行通信的过程中，接入网设备的发射天线也可利用波束成形来改善前向链路的信噪比。
此外，与接入网设备通过单个天线或多天线发射分集向它所有的终端设备发送信号的方式相比，在接入网设备利用波束成形向相关覆盖区域中随机分散的终端设备发送信号时，相邻小区中的移动设备会受到较少的干扰。
在给定时间，接入网设备或终端设备可以是无线通信发送装置和/或无线通信接收装置。当发送数据时，无线通信发送装置可对数据进行编码以用于传输。具体地，无线通信发送装置可获取(例如生成、从其它通信装置接收、或在存储器中保存等)要通过信道发送至无线通信接收装置的一定数目的数据比特。这种数据比特可包含在数据的传输块(或多个传输块)中，传输块可被分段以产生多个码块。
此外，该通信系统100可以是PLMN网络、D2D网络、M2M网络、IoT网络、V2X网络或者其他网络，图8只是举例的简化示意图，网络中还可以包括其他接入网设备，或者其他移动网络的网元图8中未予以画出。
下面结合图9至图21，对本申请实施例的通信方法的过程进行详细说。
图9示出了终端设备#A(即，第一终端设备的一例)向终端设备#B(即，第二终端设备的一例)发送数据#A(即，第一数据的一例)的过程。其中，终端设备#A位于接入网设备#A提供的小区。并且，在图9所示的数据传输过程中，转发设备设置在接入网设备#A中，即，接入网设备#A能够实现本申请的转发设备(例如，第一转发设备)的功能。
在S110，终端设备#A可以生成数据包#A，该数据包#A中携带有数据#A。并且，该数据包#A中包括字段#A(即，目标字段的一例)。该字段#A用于承载信息#A(即，目标信息的一例)。
下面，对该信息#A进行详细说明。
在本申请实施例中，该信息#A可以用于使接入网设备#A确定数据#A所需要发送至 的目标地。
作为实例而非限定，该信息#A可以包括以下至少一种信息：
A.终端设备#B的信息
例如，当该数据#B为需要发送给终端设备#B的单播数据时，该终端设备#B的信息可以包括终端设备#B的设备标识，其中，该终端设备#B的设备标识能够唯一地确定终端设备#B，例如，该终端设备#B的设备标识可以包括但不限于终端设备#B的网际协议(Internet Protocol，IP)地址、终端设备#B的媒体接入控制(Media Access Control，MAC)地址、终端设备#B的国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)、终端设备#B的国际移动设备识别码(International Mobile Equipment Identification Number，IMEI)、终端设备#B的电子序列号(Electronic Serial Numbers，ESN)、终端设备#B的手机号码、或移动网络分配给终端设备#B的临时标识等中的至少一种信息。
再例如，当该数据#B为需要发送给所属于的群组(记做，群组#B)的组播数据时，该终端设备#B的信息可以包括该群组#B的群组标识。其中，该群组#B的群组标识能够唯一地指示该群组#B，例如，作为实例而非限定，该群组#B的群组标识可以包括但不限于群组#B的IP组播地址、群组#B的MAC组播地址或者群组#B的群组身份(Identity，ID)等中的至少一种信息。
应理解，以上列举的终端设备#B的信息仅为示例性说明，本申请并未限定于此，其他能够用于确定终端设备#B或终端设备#B的群组的信息均落入本申请的保护范围内。
B.区域#B的信息
此情况下，该数据#B是需要广播至该区域#B(即，第一区域的一例)的数据，并且，该终端设备#B可以是位于该区域#B的终端设备。
例如，作为实例而非限定，该区域#B的信息可以包括该区域#B的移动网络信息，并且，该移动网络信息可以包括但不限于小区标识(或者说，小区列表)、跟踪区标识(或者说，跟踪区列表)、接入网通知区标识(或者说，接入网通知区列表)，广播服务区标识(或者说，广播服务区列表)中的至少一种信息。
再例如，该区域#B的信息可以包括该区域#B的绝对地理信息，例如，该区域#B可以是圆形，此情况下，该绝对地理信息可以包括圆形地理区域的圆心的地理坐标的信息和半径大小的信息。再例如，该区域#B可以是多个地理坐标点连线组成的多边形地理区域，此情况下，该绝对地理信息可以包括该地理坐标点的信息。
再例如，该区域#B的信息可以包括区域#B的相对地理信息，该相对地理信息可以是指该区域#B相对于规定的区域#C的相对位置的信息。
其中，该区域#C可以是终端设备#A和接入网设备#A约定的区域，或者，该区域#C可以是通信系统或通信协议规定的区域，即，该终端设备#A和接入网设备#A所确定的区域#C的位置相同。
例如，该区域#C可以是终端设备#A所处于的小区的地理位置确定的，或者，该区域#C可以是终端设备#A的地理位置确定的，或者，该区域#C可以是接入网设备#A的地理位置确定的。
作为实例而非限定，该相对地理信息可以包括该区域#B与区域#A之间的距离的信息，和/或区域#A的多个方位中该区域#B所在方位的信息。
应理解，以上列举的区域#B的信息信息仅为示例性说明，本申请并未限定于此，其他能够用于确定区域#B的信息均落入本申请的保护范围内。
并且，应理解，以上列举的区域#B的信息以及终端设备#B的信息仅为信息#A的示例性说明，本申请并未限定于此，其他能够使数据#A路由至终端设备#B或区域#B的信息均可以作为信息#A。
作为实例而非限定，在本申请实施例中，该字段#A可以是数据包#A对应的协议层#A的协议数据单元(Protocol Data Unit，PDU)中的字段。
另外，作为实例而非限定，该协议层#A可以包括终端设备与接入网设备之间的无线通信所使用的无线接口协议栈的第二层(也可以称为层2)中的至少一个协议层，例如，分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路控制(Radio Link Control，RLC)层和媒体访问控制(Media Access Control，MAC)层。
应理解，以上列举的协议层#A仅为示例性说明，本申请并未限定于此，该协议层#A也可以是无线接口协议栈中的任一协议层。
可选地，在本申请实施例中，处上述信息#A以外，该数据包#A中还可以携带有以下至少一种信息：
信息#B：终端设备#A的信息，其中，该终端设备#A的信息的实现方式可以与上述终端设备#B的信息的实现方式相似，这里，为了避免赘述，省略其详细说明；
信息#C：区域#A的信息，其中，该区域#A的信息可以包括该终端设备#A所处于的移动网络的信息，或者，该区域#A的信息可以包括该终端设备#A所处于的地理位置的信息，或者，该区域#A的信息可以包括该接入网设备#A所处于的地理位置的信息。
信息#D：数据#A所属于的业务的服务质量(Quality of Service，QoS)信息。
信息#E：数据#A对应的时间信息，该时间信息可以用于指示以下至少一种时间：数据#A产生时间，数据#A预期发送的时间、数据#A最晚发送时间、数据#A的同步发送时间标识等。其中，上述“时间”可以通过多种方式进行表达，例如，该时间可以是绝对时间，如通用协调(Universal Time Coordinated，UTC)时间，全球定位系统(Global Positioning System，GPS)时钟等；或者，该时间可以是相对时间，如GPS时钟计数偏移、以网络广播的系统帧号(SFN System Frame Number，SFN)为参考的相对SFN偏移等。
另外，在本申请实施例中，上述信息#A～信息#E可以承载于同一PDU(例如，上述协议层#A的PDU)中，具体地说，上述信息#A～信息#E可以承载于同一PDU的头(header)中。例如，图10示出了该PDU的一例的示意图。
应理解，以上列举的信息#A～信息#E的承载方式仅为示例性说明，本申请并未限定于此，例如，信息#A～信息#E中的某些信息也可以承载于不同协议层的PDU中。另外，在本申请实施例中，数据包#A中也可以不携带上述信息#B～信息#E中的部分或全部。
在本申请实施例中，可能存在以下情况：
情况A：字段#A中承载有信息#A；
情况B：字段#A中未承载有信息#A，并且，此情况下，该字段#A中承载的信息可以为空，或者，字段#A中可以承载规定的信息#A’，例如，信息#A’可以包括多个比特位，每个比特位的比特均为0，或者，每个比特位的比特均为1。
在S120，终端设备#A可以将如上所示生成的数据包#A发送给接入网设备#A。
在S130，接入网设备#A可以在协议层#A实体对数据包#A进行解析，以确定目标字段#A中是否承载有信息#A的情况，即，上述情况A或情况B。
下面，分别对情况A和情况B下接入网设备#A的处理进行详细说明。
情况A
接入网设备#A可以基于信息#A确定该数据#A所需要发送至的目的地。
例如，如果该信息#A包括终端设备#B的信息，则接入网设备#A可以基于信息#A确定终端设备#B或群组#B。
再例如，如果该信息#A包括区域#B的信息，则接入网设备#A可以基于信息#A确定区域#B。
情况A-1
当接入网设备#A能够与终端设备#B或群组#B通信时，或者，当接入网设备#A的覆盖范围包括该区域#B时，在S140，接入网设备#A对该数据包#A中承载的数据(即，数据#A)进行封装，以生成符合接入网设备#A与终端设备(包括终端设备#B)之间的通信协议的数据包#B1，并将该数据包#B1发送给终端设备#B，或者，群组#B或区域#B中的终端设备。
可选地，如果数据包#A中携带上述信息#B～信息#E中的一种或多种信息，则接入网设备#A还可以基于上述信息#B～信息#E中的一种或多种信息，发送该数据包#B1。
例如，接入网设备#A可以在数据包#B1中携带信息#B，从而，能够使接收端终端设备基于该信息#B确定数据包#B1中的数据来自于终端设备#A。
再例如，接入网设备#A可以在数据包#B1中携带信息#C，从而，能够使接收端终端设备基于该信息#B确定数据包#B1中的数据来自于区域#A中的终端设备。
再例如，接入网设备#A可以根据信息#D，确定用于承载数据包#B1的传输资源，以满足数据#A的QoS要求。
例如，接入网设备#A可以根据信息#E确定数据包#B1的发送时间。
可选地，如果数据包#A中未携带上述信息#B～信息#E中的一种或多种信息，则接入网设备#A还可以例如，从其他设备(例如，该终端设备#A的运营商的服务器等)获取上述信息#B～信息#E中的一种或多种信息，并基于上述信息#B～信息#E中的一种或多种信息，发送该数据包#B1。
情况A-2
当接入网设备#A不能够与终端设备#B或群组#B通信时，或者，当接入网设备#A的覆盖范围不包括该区域#B时，在S145，接入网设备#A可以基于该信息#A确定转发设备#B(即，第二转发设备的一例)。
例如，该转发设备#B可以包括接入网设备#B或核心网设备#B。
该接入网设备#B是能够与终端设备#B或群组#B通信的接入网设备，或者，接入网设备#B的覆盖范围包括该区域#B。
核心网设备#B是能够与接入网设备#B通信的核心网设备。
应理解，以上列举的转发设备#B仅为示例性说明，本申请并未限定于此，例如，该转发设备#B可以包括能够与终端设备#B或区域#B中的终端设备通信的移动网络的网元。
作为实例而非限定，在本申请实施例中，该接入网设备#A中可以保存有映射关系#A。
该映射关系#A可以用于指示多个终端设备中的每个终端设备所连接的转发设备(例如，接入网设备或核心网设备)，例如，该映射关系#A可以具体为M个终端设备的信息与N个转发设备之间的对应关系，其中，每个终端设备与所对应的转发设备连接，其中，M和N为大于或等于1的整数。
或者，该映射关系#A可以用于指示多个转发设备(例如，接入网设备或核心网设备)中的每个转发设备所覆盖的区域，例如，该映射关系#A可以具体指示K个终区域的信息与P个转发设备之间的对应关系，其中，每个转发设备能够覆盖所对应的区域，其中，K和P为大于或等于1的整数。
作为示例而非限定，该映射关系#A可以是移动网络中的控制设备下发给接入网设备#A的。
例如，在本申请实施例中，该控制设备可以与通信系统中的各转发设备(例如，接入网设备或核心网设备)连接，并且，各转发设备可以向控制设备上报能够与其通信的终端设备的信息，或者，各转发设备可以向控制设备上报与其所覆盖的区域的信息。从而，控制设备可以基于各转发设备上报的信息，生成上述映射关系#A。
应理解，以上列举的控制设备或接入网设备#A确定映射关系#A的方法仅为示例性说明，本申请并未限定于此，控制设备或接入网设备#A也可以基于管理员或运营商的输入确定映射关系#A。
并且，在S147，接入网设备#A对该数据包#A中承载的数据(即，数据#A)进行封装，以生成符合接入网设备#A与转发设备#B(例如，接入网设备#B或核心网设备#B)之间的通信协议的数据包#B2，并将该数据包#B2发送给转发设备#B。
可选地，接入网设备#A还可以将上述信息#B～信息#E中的至少一种信息封装入数据包#B2。
在S149，转发设备#B可以对该数据包#B2中承载的数据(即，数据#A)进行封装以生成符合转发设备#B与终端设备(包括终端设备#B)之间的通信协议的数据包#B3，并将该数据包#B3发送给终端设备#B，或者，群组#B或区域#B中的终端设备。
可选地，如果数据包#B2中携带上述信息#B～信息#E中的一种或多种信息，则转发设备#B还可以基于上述信息#B～信息#E中的一种或多种信息，发送该数据包#B1，并且，该过程可以与上述情况A-1中描述的过程相似，这里，为了避免赘述，省略其详细说明。
可选地，如果数据包##B2中未携带上述信息#B～信息#E中的一种或多种信息，则转发设备#B还可以例如，从其他设备(例如，运营商的服务器等)获取上述信息#B～信息#E中的一种或多种信息，并基于该信息#B～信息#E中的一种或多种信息发送数据包#B2，其中，该过程可以与接入网设备#A基于该信息#B～信息#E中的一种或多种信息发送数据包#B1的过程相似，这里，为了避免赘述，省略其详细说明。
情况B
如果接入网设备#A确定字段#A中未承载有信息#A，例如，该字段#A中承载的信息为空，或者，字段#A中承载了规定的信息#A’(例如，比特均为0或1的信息)，则接入网设备#A可以基于该终端设备#A的信息，确定信息#A。
作为示例而非限定，例如，该终端设备#A的信息可以包括终端设备#A的上下文信息，从而，接入网设备#A可以基于终端设备#A的上下文信息，确定信息#A，或者说，确定该 数据包#A需要发送至终端设备#B或区域#B。
再例如，该终端设备#A的信息可以包括终端设备#A的设备标识、终端设备#A所属于的群组的群组标识、终端设备#A所处于的小区的小区标识或终端设备#A所对应的承载的承载标识等。
此情况下，在接入网设备#A中可以预先存储多个终端设备的信息与多个转发设备之间的映射关系(记做，映射关系#B)，从而，接入网设备#A将该映射关系#B中指示的与该终端设备#A的信息相对应的转发设备确定为转发设备#B。
并且，作为实例而非限定，例如，接入网设备#A可以与终端设备#A预先协商与该终端设备#A的信息相对应的转发设备(即，转发设备#B)，从而，可以将该终端设备#A的信息与该转发设备#B的对应关系记录在映射关系#B中。
再例如，接入网设备#A可以基于终端设备#A的信息，预先确定与终端设备#A通信的终端设备#B，并基于该终端设备#B的信息，确定转发设备#B，进而将该终端设备#A的信息与转发设备#B的对应关系记录在映射关系#B中。
类似地，接入网设备#A可以确定其所服务的各终端设备的信息所对应的转发设备，进而确定映射关系#B。
或者，该映射关系#B也可以是管理员输入至接入网设备#A。
再或者，该映射关系#B也可以是接入网设备#A从制造商或运营商获得的。
由此，接入网设备#A在情况B下能够确定该数据包#A需要发送至终端设备#B或区域#B，并且，可以确定转发设备#B。
后续过程可以与上述情况A中描述的发送过程相似，这里，为了避免赘述，省略其详细说明。
图11示出了终端设备#α(即，第一终端设备的另一例)向终端设备#β(即，第二终端设备的另一例)发送数据#α(即，第一数据的另一例)的过程。其中，终端设备#α位于接入网设备#α提供的小区。并且，在图11所示的数据传输过程中，转发设备设置在与接入网设备#α通信连接的核心网设备#α中，即，核心网设备#α能够实现本申请的转发设备(例如，第一转发设备)的功能。
在S210，终端设备#α可以生成数据包#α，该数据包#α中携带有数据#α。并且，该数据包#α中包括字段#α(即，目标字段的另一例)。该字段#α用于承载信息#α(即，目标信息的一例)。
下面，对该信息#α进行详细说明。
在本申请实施例中，该信息#α可以用于使核心网设备#α确定数据#α所需要发送至的目标地。
作为实例而非限定，该信息#α可以包括以下至少一种信息：
α.终端设备#β的信息
例如，当该数据#β为需要发送给终端设备#β的单播数据时，该终端设备#β的信息可以包括终端设备#β的设备标识，其中，该终端设备#β的设备标识能够唯一地确定终端设备#β，例如，该终端设备#β的设备标识可以包括但不限于终端设备#β的网际协议(Internet Protocol，IP)地址、终端设备#β的MAC地址、终端设备#β的IMSI、终端设备#β的IMEI、终端设备#β的ESN、终端设备#β的手机号码、或移动网络分配给终端设备#β的临时标识 等中的至少一种信息。
再例如，当该数据#β为需要发送给所属于的群组(记做，群组#β)的组播数据时，该终端设备#β的信息可以包括该群组#β的群组标识。其中，该群组#β的群组标识能够唯一地指示该群组#β，例如，作为实例而非限定，该群组#β的群组标识可以包括但不限于群组#β的IP组播地址、群组#β的MAC组播地址或者群组#β的群组身ID等中的至少一种信息。
应理解，以上列举的终端设备#β的信息仅为示例性说明，本申请并未限定于此，其他能够用于确定终端设备#β或终端设备#β的群组的信息均落入本申请的保护范围内。
β.区域#β的信息
此情况下，该数据#β是需要广播至该区域#β(即，第一区域的另一例)的数据，并且，该终端设备#β可以是位于该区域#β的终端设备。
例如，作为实例而非限定，该区域#β的信息可以包括该区域#β的移动网络信息，并且，该移动网络信息可以包括但不限于小区标识(或者说，小区列表)、跟踪区标识(或者说，跟踪区列表)、接入网通知区标识(或者说，接入网通知区列表)，广播服务区标识(或者说，广播服务区列表)中的至少一种信息。
再例如，该区域#β的信息可以包括该区域#β的绝对地理信息，例如，该区域#β可以是圆形，此情况下，该绝对地理信息可以包括圆形地理区域的圆心的地理坐标的信息和半径大小的信息。再例如，该区域#β可以是多个地理坐标点连线组成的多边形地理区域，此情况下，该绝对地理信息可以包括该地理坐标点的信息。
再例如，该区域#β的信息可以包括区域#β的相对地理信息，该相对地理信息可以是指该区域#β相对于规定的区域#γ的相对位置的信息。
其中，该区域#γ可以是终端设备#α和核心网设备#α约定的区域，或者，该区域#γ可以是通信系统或通信协议规定的区域，即，该终端设备#α和核心网设备#α所确定的区域#γ的位置相同。
例如，该区域#γ可以是终端设备#α所处于的小区的地理位置确定的，或者，该区域#γ可以是终端设备#α的地理位置确定的，或者，该区域#γ可以是接入网设备#α的地理位置确定的。
作为实例而非限定，该相对地理信息可以包括该区域#β与区域#α之间的距离的信息，和/或区域#α的多个方位中该区域#β所在方位的信息。
应理解，以上列举的区域#β的信息信息仅为示例性说明，本申请并未限定于此，其他能够用于确定区域#β的信息均落入本申请的保护范围内。
并且，应理解，以上列举的区域#β的信息以及终端设备#β的信息仅为信息#α的示例性说明，本申请并未限定于此，其他能够使数据#α路由至终端设备#β或区域#β的信息均可以作为信息#α。
作为实例而非限定，在本申请实施例中，该字段#α可以是数据包#α对应的协议层#α的PDU中的字段。
另外，作为实例而非限定，该协议层#α可以包括终端设备与接入网设备之间的无线通信所使用的无线接口协议栈的层2中的至少一个协议层，例如，PDCP层、RLC层和MAC层。
应理解，以上列举的协议层#α仅为示例性说明，本申请并未限定于此，该协议层#α也可以是无线接口协议栈中的任一协议层。
可选地，在本申请实施例中，处上述信息#α以外，该数据包#α中还可以携带有以下至少一种信息：
信息#β：终端设备#α的信息，其中，该终端设备#α的信息的实现方式可以与上述终端设备#β的信息的实现方式相似，这里，为了避免赘述，省略其详细说明；
信息#γ：区域#α的信息，其中，该区域#α的信息可以包括该终端设备#α所处于的移动网络的信息，或者，该区域#α的信息可以包括该终端设备#α所处于的地理位置的信息，或者，该区域#α的信息可以包括该接入网设备#α所处于的地理位置的信息。
信息#ε：数据#α所属于的业务的QoS信息。
信息#θ：数据#α对应的时间信息，该时间信息可以用于指示以下至少一种时间：数据#α产生时间，数据#α预期发送的时间、数据#α最晚发送时间、数据#α的同步发送时间标识等。其中，上述“时间”可以通过多种方式进行表达，例如，该时间可以是绝对时间，如UTD时间，GPS时钟等；或者，该时间可以是相对时间，如GPS时钟计数偏移、以网络广播的SFN为参考的相对SFN偏移等。
另外，在本申请实施例中，上述信息#α～信息#θ可以承载于同一PDU(例如，上述协议层#α的PDU)中，具体地说，上述信息#α～信息#θ可以承载于同一PDU的header中。
应理解，以上列举的信息#α～信息#θ的承载方式仅为示例性说明，本申请并未限定于此，例如，信息#α～信息#θ中的某些信息也可以承载于不同协议层的PDU中。另外，在本申请实施例中，数据包#α中也可以不携带上述信息#β～信息#θ中的部分或全部。
在本申请实施例中，可能存在以下情况：
情况α：字段#α中承载有信息#α；
情况β：字段#α中未承载有信息#α，并且，此情况下，该字段#α中承载的信息可以为空，或者，字段#α中可以承载规定的信息#α’，例如，信息#α’可以包括多个比特位，每个比特位的比特均为0，或者，每个比特位的比特均为1。
情况X，当终端设备#α能够与核心网设备#α直接通信时，在S220，终端设备#α可以将数据包#α1发送给核心网设备#α。其中，该数据包#α1可以是上述数据包#α的符合终端设备与核心网设备之间的通信协议的形式。
情况Y，当终端设备#α不能够与核心网设备#α直接通信时，在S225，终端设备#α可以数据包#α2发送为该终端设备#α服务的接入网设备#α。其中，该数据包#α2可以是上述数据包#α的符合终端设备与接入网设备之间的通信协议的形式。
在S227，接入网设备#α可以对该数据包#α2中的数据进行封装，以生成符合接入网设备与核心网设备之间的传输协议的数据包β1，并将数据包β1转发至核心网设备#α。
可选地，如果数据包#α中携带上述信息#β～信息#θ中的一种或多种信息，则接入网设备#α还可以基于上述信息#β～信息#θ中的一种或多种信息，发送该数据包#β1。
例如，接入网设备#α可以在数据包#β1中携带信息#β，从而，能够使接收端终端设备基于该信息#β确定数据包#β1中的数据来自于终端设备#α。
再例如，接入网设备#α可以在数据包#β1中携带信息#γ，从而，能够使接收端终端设备基于该信息#β确定数据包#β1中的数据来自于区域#α中的终端设备。
再例如，接入网设备#α可以根据信息#ε，确定用于承载数据包#β1的传输资源，以满足数据#α的QoS要求。
例如，接入网设备#α可以根据信息#θ确定数据包#β1的发送时间。
可选地，如果数据包#α中未携带上述信息#β～信息#θ中的一种或多种信息，则接入网设备#α还可以例如，从其他设备(例如，该终端设备#α的运营商的服务器等)获取上述信息#β～信息#θ中的一种或多种信息，并基于上述信息#β～信息#θ中的一种或多种信息，发送该数据包#β1。
并且，可选地，接入网设备#α还可以将上述信息#β～信息#θ中的一种或多种信息封装入数据包#β1。
在本申请实施例中，接入网设备#α可以仅与一个核心网设备(例如，上述核心网设备#α)连接，此情况下，接入网设备#α可以直接将数据包#β1发送至核心网设备#α。
或者，如图12所示，在本申请实施例中，接入网设备#α可以与多个核心网设备(包括上述核心网设备#α)通信连接，并且，该多个核心网设备可以与多个转发设备具有对应关系，即，每个核心网设备可以与所对应的转发设备通信连接。
此情况下，接入网设备#α可以将该多个核心网设备中，与转发设备#β通信连接的核心网设备，确定为核心网设备#α。
其中，接入网设备#α确定转发设备#β的过程可以与上述接入网设备#A确定转发设备#B的过程相似，这里为了避免赘述，省略其详细说明。
作为实例而非限定，在接入网设备#α中可以存储有映射关系#1，该映射关系#1可以用于指示多个核心网设备与多个转发设备之间的对应关系，其中，每个核心网设备可以与所对应的转发设备通信，从而，接入网设备#α可以基于映射关系#1确定核心网设备#α。
作为示例而非限定，该映射关系#1可以是移动网络中的控制设备下发给接入网设备#α的。
例如，在本申请实施例中，该控制设备可以与通信系统中的各转发设备(例如，接入网设备或核心网设备)连接，并且，各转发设备可以向控制设备上报能够与其通信的终端设备的信息，或者，各转发设备可以向控制设备上报与其所覆盖的区域的信息。并且，各转发设备可以向控制设备上报能够与其通信的核心网设备的信息。从而，控制设备可以基于各转发设备上报的信息，生成上述映射关系#1。
应理解，以上列举的控制设备或接入网设备#α确定映射关系#1的方法仅为示例性说明，本申请并未限定于此，控制设备或接入网设备#α也可以基于管理员或运营商的输入确定映射关系#1。
在上述过程中，为了使接入网设备#α能够将数据包#α发送至核心网设备#α，需要使接入网设备#α能够确定转发设备β，其中，该过程可以与上述接入网设备#A确定转发设备#B的过程相似，这里，为了避免赘述，省略其详细说明。
在S230，核心网设备#α可以在协议层#α对数据包#β1进行解析，以确定目标字段#α中是否承载有信息#α的情况，即，上述情况α或情况β。
下面，分别对情况α和情况β下接入网设备#α的处理进行详细说明。
情况α
核心网设备#α可以基于信息#α确定该数据#α所需要发送至的目的地。
例如，如果该信息#α包括终端设备#β的信息，则核心网设备#α可以基于信息#α确定终端设备#β或群组#β。
再例如，如果该信息#α包括区域#β的信息，则核心网设备#α可以基于信息#α确定区域#β。
情况α-1
当核心网设备#α能够与终端设备#β或群组#β通信时，或者，当核心网设备#α的覆盖范围包括该区域#β时，在S240，核心网设备#α可以对该数据包#β1中承载的数据(即，数据#α)进行封装，以生成符合核心网设备#α与终端设备(包括终端设备#β)之间的通信协议的数据包#β2，并将该数据包#β2发送给终端设备#β，或者，群组#β或区域#β中的终端设备。
或者，当核心网设备#α所连接的接入网设备(记做：接入网设备γ)能够与终端设备#β或群组#β的接入网设备通信时，或者，核心网设备#α所连接的接入网设备(例如，接入网设备γ)的覆盖范围包括区域#β时，核心网设备#α可以对该数据包#β1中承载的数据(即，数据#α)进行封装，以生成符合核心网设备#α与接入网设备#γ之间的通信协议的数据包#β3，并将该数据包#β3发送给接入网设备#γ，从而，接入网设备#γ可以对该数据包#β3中承载的数据(即，数据#α)进行封装，以生成符合接入网设备#γ与终端设备(包括终端设备#β)之间的通信协议的数据包#β4，并将该数据包#β4发送给终端设备#β，或者，群组#β或区域#β中的终端设备。
可选地，核心网设备#α或接入网设备#γ还可以基于上述信息#β～信息#θ中的一种或多种信息，发送该数据包。其中，该过程可以与上述核心网设备#A基于信息#B至信息#E中的一种或多种信息发送数据包的过程相似，这里，为了避免赘述，省略其详细说明。
可选地，核心网设备#α还可以在数据包#β3中添加上述信息#β～信息#θ中的一种或多种信息。
情况α-2
当核心网设备#α不能够与终端设备#β或群组#β通信时，或者，当核心网设备#α的覆盖范围不包括该区域#β时，在S245，核心网设备#α可以基于该信息#α确定转发设备#β(即，第二转发设备的一例)。
例如，该转发设备#β可以包括接入网设备#β或核心网设备#β。
该接入网设备#β是能够与终端设备#β或群组#β通信的接入网设备，或者，接入网设备#β的覆盖范围包括该区域#β。
核心网设备#β是能够与接入网设备#β通信的核心网设备。
应理解，以上列举的转发设备#β仅为示例性说明，本申请并未限定于此，例如，该转发设备#β可以包括能够与终端设备#β或区域#β中的终端设备通信的移动网络的网元。
作为实例而非限定，在本申请实施例中，该核心网设备#α中可以保存有映射关系#2。
该映射关系#2可以用于指示多个终端设备中的每个终端设备所连接的转发设备(例如，接入网设备或核心网设备)，例如，该映射关系#2可以具体指示M个终端设备的信息与N个转发设备之间的对应关系，其中，每个终端设备与所对应的转发设备连接，其中，M和N为大于或等于1的整数。
或者，该映射关系#2可以用于指示多个转发设备(例如，接入网设备或核心网设备) 中的每个转发设备所覆盖的区域，例如，该映射关系#2可以具体指示K个终区域的信息与P个转发设备之间的对应关系，其中，每个转发设备能够覆盖所对应的区域，其中，K和P为大于或等于1的整数。
作为示例而非限定，该映射关系#2可以是移动网络中的控制设备下发给核心网设备#α的。
例如，在本申请实施例中，该控制设备可以与通信系统中的各转发设备(例如，接入网设备或核心网设备)连接，并且，各转发设备可以向控制设备上报能够与其通信的终端设备的信息，或者，各转发设备可以向控制设备上报与其所覆盖的区域的信息。从而，控制设备可以基于各转发设备上报的信息，生成上述映射关系#2。
应理解，以上列举的控制设备或核心网设备#α确定映射关系#2的方法仅为示例性说明，本申请并未限定于此，控制设备或核心网设备#α也可以基于管理员或运营商的输入确定映射关系#2。
在S247，核心网设备#α对该数据包#β1中承载的数据(即，数据#α)进行封装，以生成符合核心网设备#α与转发设备#β(例如，接入网设备#β或核心网设备#β)之间的通信协议的数据包#β5，并将该数据包#β5发送给转发设备#β。
在S249，转发设备#β对该数据包#β5中承载的数据(即，数据#α)进行封装以生成符合转发设备#β与终端设备(包括终端设备#β)之间的通信协议的数据包#β6，并将该数据包#β6发送给终端设备#β，或者，群组#β或区域#β中的终端设备。
可选地，如果数据包#β1中携带上述信息#β～信息#ε中的一种或多种信息，则核心网设备#α还可以基于上述信息#β～信息#θ中的一种或多种信息，发送该数据包#β5，并且，该过程可以与上述情况A-1中描述的过程相似。
可选地，如果数据包#β1中未携带上述信息#β～信息#θ中的一种或多种信息，则核心网设备#α还可以例如，从其他设备(例如，该终端设备#α的运营商的服务器等)获取上述信息#β～信息#θ中的一种或多种信息，并在数据包#β5中添加该上述信息#β～信息#ε中的一种或多种信息。
从而，转发设备#β可以基于该信息#β～信息#θ中的一种或多种信息发送数据包#β6，并且该过程可以与接入网设备#A基于该信息#B～信息#E中的一种或多种信息发送数据包的过程相似，这里，为了避免赘述，省略其详细说明。
以上列举的转发设备为接入网设备或核心网设备时基于本申请的通信方法的具体传输过程，下面，对转发设备为模块化的逻辑部件时的基于本申请的通信方法的具体传输过程。
不失一般性，将发送端的转发设备记做上行桥接(记做：U-bride)，将接收端的转发设备记做下行桥接(记做：D-Bbride)。
在本申请实施例中，可以将网元间桥接转发关系为三个阶段描述，第一阶段为桥接源终端(记做U-UE)到源桥接节点(即，U-bridge)；第二阶段为源桥接节点到目标桥接节点(即，D-bridge)；第三阶段为桥接目标节点到桥接目标终端(记做D-UE)。
下面，分别对上述三个阶段的具体传输过程进行详细说明
第一阶段
可选地，当U-bridge能够识别U-UE发送的PDU时，U-UE的接入网设备(记做， U-BS)可以透明转发U-UE发送的上行桥接适配协议(U-Bridge application protocol，UBAP)PDU到U-bridge，其中，UBAP PDU中可以携带用于确定D-bridge的信息(即，目标信息的一例)。
可选地，U-BS可以根据U-UE发送的UBAP PDU生成UBAP’PDU，其中，UBAP’PDU是符合U-BS和U-bridge之间的传输协议的PDU，并将其发送到U-bridge。并且，可选地，此情况下，U-BS可以对UBAP PDU中携带的信息进行修改，例如，添加QoS信息或发送时间信息等。
其中，UBAP PDU或UBAP’PDU的结构可以与图10所示结构相似，即，可以由header和SDU组成。SDU即终端间本地桥接传输的数据。header可以携带至少以下信息之一：源信息，目标信息，服务质量要求信息、时间信息。
源信息可以是源终端的地址信息如ip地址，L2 MAC地址，或终端标识信息：如IMSI或者其他可以确定终端的ID，如为了保护隐私网络可能分配给终端的临时标识；或源终端位置信息，如所处小区的标识，或者地理位置坐标信息等。
目标信息用于确定UBAP SDU需要发往的目的，包括目标终端的地址或者标识信息，目标群组的地址或标识信息，如IP组播地址，MAC组播地址，或者网络分配的群组ID，也可以包括移动网络位置信息，如小区标识(列表)、跟踪区标识(列表)、接入网通知区(列表)，广播服务区，或其它由小区组成的移动网络区域标识。也可以是地理位置信息，可以用地理区信息：如通过地理坐标和半径确定的圆形地理区域或通过若干个地理坐标点连线组成的多边形地理区域等。
服务质量要求信息用于确定UBAP SDU的服务等级，可以通过优先级表示。优先级也可以根据L1/L2不同的底层承载标识进行区分，如在空口可以用不同的逻辑信道ID区分，在空中接口可以用不同的隧道标识进行区分。
服务质量要求信息用于表示和该SDU相关的时间信息，如数据包产生时间，数据包预期发送的时间、数据包最晚发送时间、同步发送时间标识等。当PDU中可以携带多种类型的时间信息时，Time信息还需要携带额外的类型(type)信息由于指示时间信息的类型。PDU中也可以携带一个以上的时间信息。时间可以通过多种方式进行表达，可以是绝对时间，如UTC时间，GPS时钟等，或者相对时间，如GPS时钟计数偏移，网络广播的SFN为参考的相对SFN偏移等。
在本申请实施例中，可以在通信协议栈中新增一个协议层用于携带上述UBAP PDU或UBAP’PDU。或者，也可以通过扩展底层L2(如PDCP或者GTP-U)的协议头，用于携带上述目标信息，此时，UBAP header不再传输，只传输UBAP SDU。
可选地，U-UE发送的UBAP PDU的header中也可以不携带信息，或者，仅携带目标信息，从而，U-BS可以在U-UE发送的UBAP PDU的header中添加额外的信息，从而可以节省U-UE在空口发送的开销。
例如，如上述的源信息一般是U-BS已知的信息，另外服务质量要求信息可以通过U-Uu L1/L2携带的承载id信息中获取，如通过不同的逻辑信道id或者无线承载id区分不同的QoS。为了节省空口开销，U-UE可以只发送时间信息的短格式，如32Bit表示时间信息时，U-UE只在U-Uu接口上发送低位16bit或者8bit，而完整的32bit可以有U-BS补全。此外U-BS还可以携带一些测量信息如本地的负载信息，U-UE的信道测量信息，携 带在UBAP’SDU中，提供给U-bridge。
当U-BS和U-bridge是分离部署时，可以是n对1的关系，一个U-Bridge可以服务多个U-BS。U-BS和U-Bridge可以建立公共的接口连接用于UBAP SDU，也可以为每个UE建立不同的接口，通过不同的接口的L1/L2标识进行区分，这种情况下UBAP可以不携带元信息。
当U-BS和U-bridge共部署时，即基站自身支持U-bridge功能，则无需经过接口转发，基站内的U-bridge模块可以直接对UE发送的UBAP PDU进行处理。
第二阶段
由U-bridge将接收的UBAP PDU转换成BAP PDU发送到一个或多个D-Bridge。当U-Bridge和D-Bridge没有共部署时，一个U-Bridge可以连接多个D-Bridge，反之一个D-Bridge也可以连接多个U-Bridge。U-Bridge根据UBAP携带的包头信息，确定需要发送的D-Bridge。
当U-Bridge和D-Bridge共部署时，可以默认发给共部署的D-Bridge。UBAP PDU和BAP有类似的数据结构。U-Bridge可以对UBAP不做任何修改，当做BAP使用直接发送。U-Bridge也可以修改后生成新的BAP发送。例如修改目标信息为指定D-Bridge对应的信息。
图13示出了一种典型的D-Bridge配置，一个D-Bridge负责若干个D-BS，覆盖一片区域。U-Bridge根据上述Dst Info中的信息，确定将UBAP数据包发送给哪一个或者多个D-Bridge，当需要发送到多个D-Bridge时，U-Bridge可以通过组播方式发送)，或者复制多份UBAP PDU发送到D-Bridge。
其中，目标信息可以是以下任意一种表达方式
(1)当目标信息是包括目标终端标识时，U-Bridge需要根据目标终端标识和D-Bridge之间的对应关系信息，发送数据包给对应的D-Bridge。
(2)当目标信息是目标群组标识信息时，类似的U-Bridge需要根据目标终端群组标识和D-Bridge之间的对应关系信息，发送数据包给对应的D-Bridge。
(3)当目标信息是移动网络位置信息时，又分为绝对移动网络位置信息和相对移动网络位置。绝对移动网络位置信息表示的目标的小区ID，位置区ID，接入网通知区，广播服务区等，上述位置信息可以包括一个或者多个目标位置标识或者目标位置标识列表。相对位置信息可以是相对源信息的某个区域。如源信息可以是U-UE所在的小区、位置区、接入网通知区或广播服务区等，那相对位置可以是以源信息所示区域相关的Bridge发送区。特殊情况为Bridge发送区即源信息所示区域自身，如源信息指示一个位置区时，Bridge发送区就是该位置区。另如源信息是U-UE所在小区ID时，对应的Bridge发送区可以为该小区的邻区。U-Bridge通过源信息和Bridge发送区对应关系确定对应的D-bridge。
(4)当目标信息是地理位置信息时，也分为绝对位置和相对位置。绝对地理位置区域有多种标识方式，如地理位置坐标，若干个地理位置坐标连线组成的区域，或者地理位置坐标确定圆心和物理半径组成的地理区域。相对位置及以某一地理位置为参考点的相对区域，可以以源信息指示的位置为参考点，如U-UE所在地理位置为中心，规定距离(例如，200米)范围的区域。U-Bridge根据地理位置和D-Bridge的对应关系确定发送的D-Bridge。
(5)当目标信息没有配置时，或者，目标信息为规定的信息(例如，比特全部为0或1的信息)，U-Bridge可以根据网络的默认配置如上述相对位置，如以U-UE所在位置的规定范围(例如，200米)或者U-UE所在小区的邻区确定对应的D-Bridge。也可以根据U-UE的上下文，如U-UE所属的群组标识作为目标群组标识信息确定对应的D-Bridge。
上述D-Bridge的对应关系可以由D-bridge标识信息，接口连接号，D-Bridge地址，或者D-Bridge对应的组播地址等表示。
D-bridge可以通过IP地址、端口或隧道标识确定。U-Bridge和D-Bridge之间可以通过不同的隧道标识区分不同的QoS业务。
其中，隧道也可以称为承载。
第三阶段
由D-Bridge将接收的BAP PDU转换成DBAP PDU发送到一个或多个D-BS，再由D-BS发送到一个或多个D-UE。
D-Bridge和D-BS之间可能采用单播或者组播的方式发送DBAP PDU。
当采用单播方式发送到一个以上的D-BS时，D-Bridge需要复制DBAP PDU一一发送到对应的D-BS，可以基于IP地址或者承载标识确定目标D-BS。
当采用组播方式发送时，可以使用的组播MAC地址、IP地址或隧道标识来确定目标D-BS。
D-BS和D-UE之间空口也可以采用单播或者组播的方式发送。当采用单播发送时给一个以上的D-UE时，D-BS需要复制DBAP通过空口D-UE的专用无线承载，通过专用的空口标识(例如，C-RNTI)发送给D-UE。如果D-BS采用的组播方式发送时，则可以通过对应的组播承载，可以通过空口组播标识(例如，G-RNTI)发送给一组D-UE。
DBAP PDU和BAP有类似的数据格式。D-Bridge可以对BAP不做任何修改，当做DBAP使用直接发送。类似上述，D-Bridge可以通过BAP里的Dst Info确定对应的D-BS，并通过接口，采用组播或者单播方式发送到对应的D-BS。
D-BS接收到DBAP，根据DBAP中携带的Dst info，选择单播或者组播的方式发送其下管理的D-UE。D-BS可以根据目标信息进一步确定是否和本节点属性相符，如目标信息是目标终端标识或者目标群组标识时，D-BS根据其下管理的终端列表信息或者终端群组列表信息判断是否有和目标信息相匹配。如果有，则D-BS可以根据目标信息中指示的标识信息，确定空口发送的标识，如发给一个目标终端时，采用的该终端指定的空口标识(如C-RNTI)指示的信道发送给该终端。如果是同时发给多个目标终端或者是一组目标终端时，D-BS可以复制DBAP，分别以终端各自的空口标识指示的信道分别发送给各个终端，也可以采用组播或者广播的方式，采用空口组标识或者广播标识指示组播信道或者广播信道发送一次，目标终端组内的终端会同时在相同的空口资源上接收该信息，从而可以节省空口资源。同时根据DBAP中携带的服务质量要求信息或时间信息中如携带最晚发送时间等指示信息时，D-BS可以采取相应的调度优先级保障按其要求进行发送。如果时间信息中如携同步发送时间，则多个D-BS会在相同的时间同时发送，从而增加处于多个D-BS重叠覆盖的D-UE的接收信号强度。
如图14所示，不同的D-bridge可以负责不同区域的桥接转发，两个D-bridge管理两块不同的区域的D-BS，区域间允许重叠(有公共的D-BS)。
或者，如图15所示，不同的D-bridge管理的是不同粒度的空间划分，一个D-bridge是管理小粒度的(如小区级)的空间区域划分，另一个D-bridge则可能是这一整片区域的的桥接业务(多个小区的连续覆盖组成)。U-bridge和D-bridge在建立接口时，可以获知不同D-bridge负责的区域，并按UE的桥接数据的业务要求，选择合适D-bridge桥接数据。
U-bridge可以根据管理平台获取D-bridge的桥接区域信息。根据D-bridge的区域构建对应的DNS域名，如U-bridge希望在cell1桥接对应的数据，则可以构建DNS域名为cell1.bridge.network1，表征希望连接负责网络network1下的cell1桥接的D-bridge，由DNS映射至相应的的D-bridge IP地址。
下面具体描述了两类典型的低时延高可靠通讯场景。
场景1、UE需要向其周围200米范围的内的终端发送一个消息。比如S-UE是一辆汽车，发生紧急情况，需要临时停靠。或者S-UE是工厂的一个自动机器人，突发事故。
场景2、UE属于一个通讯组，需要向其组员发送一个消息。典型的例子有高速公路上汽车编队行驶，组成一个组。组内测量需要快速交互前后的刹车加速等控制信息，或者前后测量传感器检测到的数据信息。或者在工业互联网场景，一组机器人协同完成一个货物加工的操作，需要在组内交互各种定位控制信息。
图16是一种典型的5G部署场景gNB同时具有U-BS和D-BS的功能。U-Bridge和D-Bridge作为逻辑功能分离部署，可以在UPF的逻辑功能上扩展。Bridge control作为控制面对U-Bridge，D-bridge和gNB完成配置工作，可以做为独立的逻辑功能部署，也可以在SMF逻辑功能上扩展。
图17描述是图16架构下的Bridge会话(session)建立过程，为了简化描述图中省略了如AMF逻辑功能，gNB和控制器(Bridge control)之间的信令需要经过AMF转发，此外Bridge control可能需要先和PCF协商确定用户策略后才进行响应的用户面配置，以及可能的额外的鉴权加密过程在图17中都省略描述。首先UE需要进入连接态，激活PDU session。通过PDU session UE可以访问互联网internet。通过和高层应用服务器协商，触发需要本地的低时延高可靠通讯业务，应用层过程不在本申请中详述。
步骤(1)经应用层触发，UE底层通讯模块发送桥接会话创建请求(Bridge session establish req)消息通过gNB已建立的信令连接发送到Bridge control(可能经过AMF转发)，其中可以携带桥接业务的类型，可以是至少以下三类中的一类，typeA:周边广播类型(bridged broadcasting)，type B:群组通讯类型(bridged group communication)，或者是type C:点到点通讯类型(bridged ptp)。还可以携带桥接业务的业务特性要求，如发送的范围，QoS要求(包括时延，可靠性，丢包率，速率等)。对于群组通讯，还可以携带需要创建群组或加入的群组请求，加入群组需要携带加入群组对应的标识。还可以携带UE的需要进行业务的位置信息。
步骤(2)Bridge control收到桥接会话创建请求后，根据UE请求的桥接会话(Bridge session)的业务类型，为UE分配桥接标识和/或桥接组标识，这个标识可以是移动网内定义的链路层标识信息，也可以用内网的IP地址代替。并且，Bridge control可以发起和U-bridge的参数配置流程，Bridge control可以基于桥接会话的业务类型或UE所在的位置(如小区、地理坐标或者位置区信息)确定U-bridge。U-bridge配置请求消息可以携带如下信息之一：桥接业务的类型，UE对应的桥接标识信息，D-bridge桥接规则，U-bridge 与gNB的接口传输配置信息和U-bridge与D-bridge的接口传输配置信息，业务的QoS信息等。业务桥接规则为上述目标信息和D-Bridge之间的映射法则。如在该U-bridge上已经配有相应的业务桥接规则，则可以不用配置。U-Bridge接收后返回U-bridge配置响应消息，可以携带U-bridge与gNB和D-Bridge的接口的传输配置信息。
步骤(3)对于D-Bridge和U-Bridge分离部署的场景，Bridge control可以发起对一个或者多个D-Bridge的配置过程。如果D-Bridge已经配置完成，给U-bridge配置的D-bridge桥接规则可以找到对应的桥接D-Bridge，则可以不进行D-Bridge配置。通常D-Bridge负责一个或者多个D-BS区域，不同的D-Bridge之间可以有部分的D-BS是重叠的。D-Bridge和D-BS之间的配置，和D-Bridge之间的重叠关系属于网络规划问题，本申请不做限制。如果给U-bridge配置的业务桥接规则可能需要重新配置一个D-Bridge，则Bridge control通过发送D-Bridge配置消息给对应的D-Bridge来完成配置，消息中至少包含一个以下信息：U-bridge与gNB的接口的配置信息，U-bridge与D-bridge的接口的配置信息，D-BS业务桥接规则，一个或多个D-BS(本图中即gNB)的接口传输配置信息(用于单播发送)，需要支持的桥接组标识，需要支持的QoS类型等。
图18示出了U-bridge和D-bridge共部署的典型场景，U-Bridge和D-Bridge功能合一组成RGW节点。U-bridge和D-bridge的配置过程可以合并为一个过程。
图19示出了是gNB在CU/DU分离后的，高层协议的CU和RGW合一的场景，此时DU完成D-BS和U-BS的功能。
图20示出了gNB和RGW整体合一的场景。
步骤(4)Bridge control同时可以通过建立请求#1配置D-bridge对应的D-BS(即图中的gNB#2)。如果采用的是组播方式，则传输配置包括IP组播目的地址，IP源地址(D-bridge的IP地址)和下行组播隧道标识。如果采用的是单播方式，则只需发送D-bridge的IP地址和U-bridge的隧道标识即可。然后由D-BS进行应答。如果是单播方式还需携带D-BS的接口配置信息，由Bridge control通过D-Bridge更新消息对D-bridge进行更新。如果U-Bridge对应多个D-bridge，则可以重复执行(3)和(4)。
步骤(5)Bridge control在配置完U-bridge，D-bridge和对应的D-BS后，可以通过建立请求响应#1消息，完成U-BS和U-Bridge的接口配置，其中携带U-Bridge接口对应的传输配置，还携带U-Uu对应的QoS信息，以及携带UE的桥接标识。U-BS通过上行接口建立请求消息返回其对应的上行接口传输配置。可选的UE所在的gNB(即，gNB#1)也是对应N-bridge对应的D-DS，则Bridge可以通过上述(4)中所述的过程实现gNB对应下行接口的配置。也可以将对应下行接口建立请求中的配置信息在上行接口建立请求一起发送给gNB。
步骤(6)由Bridge control向UE发送桥接会话创建应答。其中携带UE的桥接(组)标识，以及可能的UBAP/DBAP数据包格式，包括包头可能携带的信息。同时gNB会触发相应的Uu接口RRC配置，用于配置Uu上对应的U-Uu和D-Uu的专用无线承载。U-Uu是基于专用单播的承载方式进行发送(RRC消息可以携带UE专用的空口标识)，D-Uu可以是单播承载也可以组播或者广播承载(RRC消息会携带相应的空口组播标识)。以及对应的U-Uu和D-Uu的无线空口视频资源配置。不同QoS的业务可以通过不同的无线承载发送，空口配置不同的逻辑信道区分，对于D-Uu以组播方式发送的不同QoS业务， 可以通过空口组播标识进行区分。
对于区域组播，UE通过上行桥接专用无线承载发送UBAP PDU，UBAP header中源信息为UE的桥接标识，目标信息为组播区域指示以UE为中心规定距离(例如，100m)范围内进行组播。gNB接收后通过Nx接口发送给U-bridge。U-bridge根据UE所在位置及规定距离(例如，100m)的组播范围，确定对应的D-Bridge。D-bridge再根据其Dst info确定对应的组播gNB，通过组播方式将对应的PDU发送到gNB，可选的携带同步发送时间标识。多个gNB按照同步发送时间标识，在相应的组播空口信道中，以相同的空口组播标识发送数据给其覆盖范围内的UE接收。
对于群组组播，UE在上行UBAP header的dst info中可以携带群组标识，如果UBAP中不携带组标识，也可以由U-bridge在BAP中添加。U-Bridge根据组成员所在的D-Bridge信息，发送到对应的D-Bridge。组成员所在的D-Bridge的桥接关系由Bridge control在U-bridge配置的时候发送，后续发生变更再进行更新。
图21是切换导致目标信息发生变化时的U-bridge变更和组桥接关系更新的过程当群组UE中的一个UE发生移动后，可能由其负责的基站负责发送bridge control，桥接区域变更的指示，通常UE会发送测量报告到gNB，报告一个新的小区信号比当前坐在的服务小区更好，由gNB判决是否要发起切换，更换到信号更好的小区。gNB判决需要切换后，可以在切换过程发生前(如向新的基站发起切换请求前)或者切换完成后(新的基站指示UE已经接入其下小区后)向bridge control发送桥接区域更新(bridge area update)消息，用于指示群组桥接区的变更。另一种触发机制是由UE直接通知bridge control，当UE认为其所在小区或者位置发生变化时，通过桥接区域更新消息通知bridge control。Bridge control通过桥接区域更新消息通知该group对应的u-bridge需要更新桥接区域，以便这个UE到了新的区域后，也能接收到该组的桥接数据。可选的如果该UE的移动，导致需要新增一个U-bridge或者删除其原有的U-bridge，则有bridge control控制。如果更新前的U-bridge还有数据未发完可以转发到更新后的U-bridge。
根据本申请实施例的方案，通过使第一转发设备根据该第一终端设备的信息获取该第一数据所需要发送至的终端设备或区域的信息，能够使第一转发设备将该第一数据发送至该终端设备或区域，从而，无需使该第一转发设备将该第一数据发送至用于实现路由寻址功能的服务器等设备，从而，能够减小传输时延。
根据前述方法，图22为本申请实施例提供的通信装置10的示意图一，如图22所示，该通信装置10可以为终端设备(例如，上述终端设备#A或终端设备#α)，也可以为芯片或电路，比如可设置于终端设备的芯片或电路。其中，该终端设备可以对应上述方法中的终端设备。
该通信装置10可以包括处理器11(即，处理单元的一例)和存储器12。该存储器12用于存储指令，该处理器11用于执行该存储器12存储的指令，以使该装置20实现如图2中对应的方法中终端设备(例如，上述终端设备#A或终端设备#α)执行的步骤。
进一步的，该通信装置10还可以包括输入口13(即，通信单元的一例)和输出口14(即，通信单元的另一例)。进一步的，该处理器11、存储器12、输入口13和输出口14可以通过内部连接通路互相通信，传递控制和/或数据信号。该存储器12用于存储计算机程序，该处理器11可以用于从该存储器12中调用并运行该计算计程序，以控制输入口 13接收信号，控制输出口14发送信号，完成上述方法中终端设备的步骤。该存储器12可以集成在处理器11中，也可以与处理器11分开设置。
可选地，若该通信装置10为终端设备，该输入口13为接收器，该输出口14为发送器。其中，接收器和发送器可以为相同或者不同的物理实体。为相同的物理实体时，可以统称为收发器。
可选地，若该通信装置10为芯片或电路，该输入口13为输入接口，该输出口14为输出接口。
作为一种实现方式，输入口13和输出口14的功能可以考虑通过收发电路或者收发的专用芯片实现。处理器11可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
作为另一种实现方式，可以考虑使用通用计算机的方式来实现本申请实施例提供的终端设备。即将实现处理器11、输入口13和输出口14功能的程序代码存储在存储器12中，通用处理器通过执行存储器12中的代码来实现处理器11、输入口13和输出口14的功能。
在本申请实施例中，处理器11用于生成第一数据包，所述第一数据包携带有第一数据，并且，所述第一数据包中包括目标字段，所述目标字段中承载的信息用于确定目标信息，所述目标信息包括至少一个第二终端设备的信息或第一区域的信息，所述第二终端设备是所述第一数据需要发送至的终端设备，所述第一区域所述第一数据需要广播至的区域；并且，处理器11用于通过输出口14向移动网络中的第一转发设备发送所述第一数据包。
可选地，所述目标字段位于所述第一数据包对应的第一协议层的协议数据单元PDU中，所述第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
可选地，所述目标字段中携带有所述目标信息。
可选地，所述目标字段中承载的信息为空或规定的预设值，所述目标信息是所述第一转发设备根据所述第一终端设备的信息确定的，所述第一终端设备的信息包括所述第一终端设备的上下文信息、所述第一终端设备的位置信息，所述第一终端设备所处于的小区的小区信息中的至少一种信息。
可选地，第二终端设备的信息包括所述第二终端设备的设备标识或所述第二终端设备所属于的终端设备群组的群组标识。
可选地，所述第一区域的信息包括所述第一区域的移动网络信息或所述第一小区的地理位置信息。
其中，以上列举的通信装置10中各模块或单元的功能和动作仅为示例性说明，通信装置10中各模块或单元可以用于执行上述方法中终端设备所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
该装置10所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法或其他实施例中关于这些内容的描述，此处不做赘述。
图23为本申请提供的一种终端设备20的结构示意图。为了便于说明，图23仅示出了终端设备的主要部件。如图23所示，终端设备20包括处理器、存储器、控制电路、天线以及输入输出装置。
处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于支持终端设备执行上述传输预编码矩阵的指示方法实施例中所描述的动作。存储器主要用于存储软件程序和数据，例如存储上述实施例中所描述的码本。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图23仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图23中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
示例性的，在本申请实施例中，可以将具有收发功能的天线和控制电路视为终端设备20的收发单元201，将具有处理功能的处理器视为终端设备20的处理单元202。如图23所示，终端设备20包括收发单元201和处理单元202。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元201中用于实现接收功能的器件视为接收单元，将收发单元201中用于实现发送功能的器件视为发送单元，即收发单元201包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
根据前述方法，图24为本申请实施例提供的用于通信的装置30的示意图二，如图24所示，该装置30可以为网络设备(例如，上述网络设备#A)，也可以为芯片或电路，如可设置于网络设备内的芯片或电路。其中，该网络设备对应上述方法中的转发设备(例如，上述接入网设备#A或核心网设备#α)。
该装置30可以包括处理器31(即，处理单元的一例)和存储器32。该存储器32用于存储指令，该处理器31用于执行该存储器32存储的指令，以使该装置30实现前述方 法中转发设备(例如，接入网设备#A或核心网设备#α)执行的步骤。
进一步的，该装置30还可以包括输入口33(即，通信单元的一例)和输出口33(即，处理单元的另一例)。再进一步的，该处理器31、存储器32、输入口33和输出口34可以通过内部连接通路互相通信，传递控制和/或数据信号。该存储器32用于存储计算机程序，该处理器31可以用于从该存储器32中调用并运行该计算计程序，以控制输入口33接收第一数据包，所述第一数据包携带有来自第一终端设备的第一数据，并且，所述第一数据包中包括目标字段，所述目标字段中承载的信息用于确定目标信息，所述目标信息包括至少一个第二终端设备的信息或第一区域的信息，所述第二终端设备是所述第一数据需要发送至的终端设备，所述第一区域所述第一数据需要广播至的区域；并且，该处理器31还用于控制输出口34根据所述目标信息发送第二数据包，所述第二数据包携带有所述第一数据。
可选地，所述目标字段位于所述第一数据包对应的第一协议层的协议数据单元PDU中，所述第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
可选地，所述目标字段中携带有所述目标信息。
可选地，当所述目标字段中承载的信息为空或规定的预设值时，所述方法还包括：所述第一转发设备根据所述第一终端设备的信息确定所述目标信息，所述第一终端设备的信息包括所述第一终端设备的上下文信息、所述第一终端设备的位置信息，所述第一终端设备所处于的小区的小区信息中的至少一种信息。
可选地，第二终端设备的信息包括所述第二终端设备的设备标识或所述第二终端设备所属于的终端设备群组的群组标识。
可选地，所述第一区域的信息包括所述第一区域的移动网络信息或所述第一小区的地理位置信息。
可选地，该处理器31还用于控制输出口34根据所述目标信息，向移动网络中的第二转发设备发送所述第二数据包，其中，所述第二转发设备能够与所述第二终端设备通信，或所述第二转发设备的覆盖范围包括所述第一区域。
可选地，该处理器31还用于将所述第一数据对应的服务质量QoS信息和/或所述第一数据的发送时间信息封装入所述第二数据包。
可选地，该处理器31还用于将配置信息指示的为所述第二终端设备服务的转发设备确定为所述第二转发设备，其中，所述配置信息用于指示包括所述第二转发设备在内的多个转发设备中的每个转发设备所服务的终端设备。
可选地，该处理器31还用于将配置信息指示的覆盖范围包括所述第一区域的转发设备确定为所述第二转发设备，所述配置信息用于指示包括所述第二转发设备在内的多个转发设备中的每个转发设备所覆盖的区域。
可选地，所述配置信息是所述装置30从控制设备获取的，所述配置信息是所述控制设备根据所述多个转发设备中的每个转发设备上报的状态信息确定的，其中，每个转发设备上报的状态信息用于指示所述转发设备所服务的终端设备或所述转发设备覆盖的区域。
可选地，所述装置30中配置有多个端口，其中，每个端口用于所述第一转发设备与至少一个转发设备之间的通信，可选地，该处理器31还用于根据所述目标信息，从所述 多个端口中确定第一端口，其中，所述第一端口是所述第一转发设备与所述第二转发设备之间的通信；可选地，该处理器31还用于控制输出口34通过所述第一端口，向所述第二转发设备发送所述第二数据包。
可选地，所述装置30包括与所述第一终端设备通信连接的接入网设备或核心网设备。
作为一种实现方式，输入口33和输出口34的功能可以考虑通过收发电路或者收发的专用芯片实现。处理器31可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
作为另一种实现方式，可以考虑使用通用计算机的方式来实现本申请实施例提供的网络设备。即将实现处理器31、输入口33和输出口34功能的程序代码存储在存储器中，通用处理器通过执行存储器中的代码来实现处理器31、输入口33和输出口34的功能。
其中，以上列举的通信装置30中各模块或单元的功能和动作仅为示例性说明，通信装置30中各模块或单元可以用于执行上述方法中转发设备所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
该装置30所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法或其他实施例中关于这些内容的描述，此处不做赘述。
图25为本申请实施例提供的一种转发设备40的结构示意图，可以用于实现上述方法中的转发设备(例如，接入网设备#A或核心网设备#α)的功能。转发设备40包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)401和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)402。所述RRU 401可以称为收发单元、收发机、收发电路、或者收发器等等，其可以包括至少一个天线4011和射频单元4012。所述RRU 401部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送上述实施例中所述的信令消息。所述BBU 402部分主要用于进行基带处理，对基站进行控制等。所述RRU 401与BBU 402可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 402为基站的控制中心，也可以称为处理单元，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如该BBU(处理单元)402可以用于控制基站40执行上述方法实施例中关于网络设备的操作流程。
在一个示例中，所述BBU 402可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE系统，或5G系统)，也可以分别支持不同接入制式的无线接入网。所述BBU 402还包括存储器4021和处理器4022。所述存储器4021用以存储必要的指令和数据。例如存储器4021存储上述实施例中的码本等。所述处理器4022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器4021和处理器4022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
在一种可能的实施方式中，随着片上系统(System-on-chip，SoC)技术的发展，可以将402部分和401部分的全部或者部分功能由SoC技术实现，例如由一颗基站功能芯片实现，该基站功能芯片集成了处理器、存储器、天线接口等器件，基站相关功能的程序存储在存储器中，由处理器执行程序以实现基站的相关功能。可选的，该基站功能芯片也能够 读取该芯片外部的存储器以实现基站的相关功能。
应理解，图25示例的转发设备的结构仅为一种可能的形态，而不应对本申请实施例构成任何限定。本申请并不排除未来可能出现的其他形态的基站结构的可能。
根据本申请实施例提供的方法，本申请实施例还提供一种通信系统，其包括前述的网络设备和一个或多于一个终端设备。
应理解，本申请实施例中，该处理器可以为中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、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、分立硬件组件等。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。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(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含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解，本文中术语“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。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的 先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
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。所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，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。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耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。另外，在本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。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，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，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(ROM)、随机存取存储器(RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (31)

  1. 一种通信方法，其特征在于，包括：
    移动网络中的第一转发设备接收第一数据包，所述第一数据包携带有来自第一终端设备的第一数据，并且，所述第一数据包中包括目标字段，所述目标字段中承载的信息用于确定目标信息，所述目标信息包括至少一个第二终端设备的信息或第一区域的信息，所述第二终端设备是所述第一数据需要发送至的终端设备，所述第一区域所述第一数据需要广播至的区域；
    所述第一转发设备根据所述目标信息发送第二数据包，所述第二数据包携带有所述第一数据。
  2. 根据权利要求1所述的通信方法，其特征在于，所述目标字段位于所述第一数据包对应的第一协议层的协议数据单元PDU中，所述第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
  3. 根据权利要求1或2所述的通信方法，其特征在于，所述目标字段中携带有所述目标信息；或者
    当所述目标字段中承载的信息为空或规定的预设值时，所述方法还包括：所述第一转发设备根据所述第一终端设备的信息确定所述目标信息，所述第一终端设备的信息包括所述第一终端设备的上下文信息、所述第一终端设备的位置信息，所述第一终端设备所处于的小区的小区信息中的至少一种信息。
  4. 根据权利要求1至3中任一项所述的通信方法，其特征在于，第二终端设备的信息包括所述第二终端设备的设备标识或所述第二终端设备所属于的终端设备群组的群组标识，
    所述第一区域的信息包括所述第一区域的移动网络信息或所述第一小区的地理位置信息。
  5. 根据权利要求1至4中任一项所述的通信方法，其特征在于，所述第一转发设备根据所述目标信息发送第二数据包，包括：
    所述第一转发设备根据所述目标信息，向移动网络中的第二转发设备发送所述第二数据包，其中，所述第二转发设备能够与所述第二终端设备通信，或所述第二转发设备的覆盖范围包括所述第一区域。
  6. 根据权利要求5所述的通信方法，其特征在于，在所述第一转发设备根据所述目标信息，向移动网络中的第二转发设备发送所述第二数据包之前，所述方法还包括：
    所述第一转发设备将所述第一数据对应的服务质量QoS信息和/或所述第一数据的发送时间信息封装入所述第二数据包。
  7. 根据权利要求5或6所述的通信方法，其特征在于，在所述第一转发设备根据所述目标信息发送第二数据包之前，所述方法还包括：
    所述第一转发设备将配置信息指示的为所述第二终端设备服务的转发设备确定为所述第二转发设备，其中，所述配置信息用于指示包括所述第二转发设备在内的多个转发设备中的每个转发设备所服务的终端设备；或者
    所述第一转发设备将配置信息指示的覆盖范围包括所述第一区域的转发设备确定为所述第二转发设备，所述配置信息用于指示包括所述第二转发设备在内的多个转发设备中的每个转发设备所覆盖的区域。
  8. 根据权利要求7所述的通信方法，其特征在于，所述配置信息是所述第一转发设备从控制设备获取的，所述配置信息是所述控制设备根据所述多个转发设备中的每个转发设备上报的状态信息确定的，其中，每个转发设备上报的状态信息用于指示所述转发设备所服务的终端设备或所述转发设备覆盖的区域。
  9. 根据权利要求5至8中任一项所述的通信方法，其特征在于，所述第一转发设备中配置有多个端口，其中，每个端口用于所述第一转发设备与至少一个转发设备之间的通信，以及
    所述第一转发设备根据所述目标信息，向移动网络中的第二转发设备发送所述第二数据包，包括：
    所述第一转发设备根据所述目标信息，从所述多个端口中确定第一端口，其中，所述第一端口是所述第一转发设备与所述第二转发设备之间的通信；
    所述第一转发设备通过所述第一端口，向所述第二转发设备发送所述第二数据包。
  10. 根据权利要求1至9中任一项所述的通信方法，其特征在于，所述第一转发设备包括与所述第一终端设备通信连接的接入网设备或核心网设备。
  11. 一种通信方法，其特征在于，包括：
    第一终端设备生成第一数据包，所述第一数据包携带有第一数据，并且，所述第一数据包中包括目标字段，所述目标字段中承载的信息用于确定目标信息，所述目标信息包括至少一个第二终端设备的信息或第一区域的信息，所述第二终端设备是所述第一数据需要发送至的终端设备，所述第一区域所述第一数据需要广播至的区域；
    所述第一终端设备向移动网络中的第一转发设备发送所述第一数据包。
  12. 根据权利要求11所述的通信方法，其特征在于，所述目标字段位于所述第一数据包对应的第一协议层的协议数据单元PDU中，所述第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
  13. 根据权利要求11或12所述的通信方法，其特征在于，所述目标字段中携带有所述目标信息；或者
    所述目标字段中承载的信息为空或规定的预设值，所述目标信息是所述第一转发设备根据所述第一终端设备的信息确定的，所述第一终端设备的信息包括所述第一终端设备的上下文信息、所述第一终端设备的位置信息，所述第一终端设备所处于的小区的小区信息中的至少一种信息。
  14. 根据权利要求11至13中任一项所述的通信方法，其特征在于，第二终端设备的信息包括所述第二终端设备的设备标识或所述第二终端设备所属于的终端设备群组的群组标识；
    所述第一区域的信息包括所述第一区域的移动网络信息或所述第一小区的地理位置信息。
  15. 一种通信设备，其特征在于，配置在移动网络中，所述装置包括：
    收发器，用于接收第一数据包，所述第一数据包携带有来自第一终端设备的第一数据， 并且，所述第一数据包中包括目标字段，所述目标字段中承载的信息用于确定目标信息，所述目标信息包括至少一个第二终端设备的信息或第一区域的信息，所述第二终端设备是所述第一数据需要发送至的终端设备，所述第一区域所述第一数据需要广播至的区域；
    处理器，用于根据所述目标信息控制所述收发器发送第二数据包，所述第二数据包携带有所述第一数据。
  16. 根据权利要求15所述的通信设备，其特征在于，所述目标字段位于所述第一数据包对应的第一协议层的协议数据单元PDU中，所述第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
  17. 根据权利要求15或16所述的通信设备，其特征在于，所述目标字段中携带有所述目标信息；或者
    当所述目标字段中承载的信息为空或规定的预设值时，所述处理器具体用于根据所述第一终端设备的信息确定所述目标信息，所述第一终端设备的信息包括所述第一终端设备的上下文信息、所述第一终端设备的位置信息，所述第一终端设备所处于的小区的小区信息中的至少一种信息。
  18. 根据权利要求15至17中任一项所述的通信设备，其特征在于，第二终端设备的信息包括所述第二终端设备的设备标识或所述第二终端设备所属于的终端设备群组的群组标识，
    所述第一区域的信息包括所述第一区域的移动网络信息或所述第一小区的地理位置信息。
  19. 根据权利要求15至18中任一项所述的通信设备，其特征在于，所述处理器具体用于根据所述目标信息控制所述收发器向移动网络中的第二转发设备发送所述第二数据包，其中，所述第二转发设备能够与所述第二终端设备通信，或所述第二转发设备的覆盖范围包括所述第一区域。
  20. 根据权利要求19所述的通信设备，其特征在于，所述处理单元还用于将所述第一数据对应的服务质量QoS信息和/或所述第一数据的发送时间信息封装入所述第二数据包。
  21. 根据权利要求19或20所述的通信设备，其特征在于，所述处理单元具体用于将配置信息指示的为所述第二终端设备服务的转发设备确定为所述第二转发设备，其中，所述配置信息用于指示包括所述第二转发设备在内的多个转发设备中的每个转发设备所服务的终端设备；或者
    所述处理单元具体用于将配置信息指示的覆盖范围包括所述第一区域的转发设备确定为所述第二转发设备，所述配置信息用于指示包括所述第二转发设备在内的多个转发设备中的每个转发设备所覆盖的区域。
  22. 根据权利要求21所述的通信设备，其特征在于，所述收发器还用于从控制设备接收所述配置信息，所述配置信息是所述控制设备根据所述多个转发设备中的每个转发设备上报的状态信息确定的，其中，每个转发设备上报的状态信息用于指示所述转发设备所服务的终端设备或所述转发设备覆盖的区域。
  23. 根据权利要求19至22中任一项所述的通信设备，其特征在于，所述通信设备包括多个端口，其中，每个端口用于所述通信设备与至少一个转发设备之间的通信，以及
    所述处理器具体用于根据所述目标信息，从所述多个端口中确定第一端口，其中，所述第一端口是所述通信设备与所述第二转发设备之间的通信；并控制所述收发器通过所述第一端口，向所述第二转发设备发送所述第二数据包。
  24. 根据权利要求15至23中任一项所述的通信设备，其特征在于，所述通信设备包括与所述第一终端设备通信连接的接入网设备或核心网设备。
  25. 一种通信设备，其特征在于，包括：
    处理单元，用于生成第一数据包，所述第一数据包携带有第一数据，并且，所述第一数据包中包括目标字段，所述目标字段中承载的信息用于确定目标信息，所述目标信息包括至少一个第二终端设备的信息或第一区域的信息，所述第二终端设备是所述第一数据需要发送至的终端设备，所述第一区域所述第一数据需要广播至的区域；
    收发单元，用于向移动网络中的第一转发设备发送所述第一数据包。
  26. 根据权利要求25所述的通信设备，其特征在于，所述目标字段位于所述第一数据包对应的第一协议层的协议数据单元PDU中，所述第一协议层包括分组数据汇聚协议PDCP层、无线链路控制RLC层和媒体访问控制MAC层中的至少一层。
  27. 根据权利要求25或26所述的通信设备，其特征在于，所述目标字段中携带有所述目标信息；或者
    所述目标字段中承载的信息为空或规定的预设值，所述目标信息是所述第一转发设备根据所述第一终端设备的信息确定的，所述第一终端设备的信息包括所述第一终端设备的上下文信息、所述第一终端设备的位置信息，所述第一终端设备所处于的小区的小区信息中的至少一种信息。
  28. 根据权利要求25至27中任一项所述的通信设备，其特征在于，第二终端设备的信息包括所述第二终端设备的设备标识或所述第二终端设备所属于的终端设备群组的群组标识；
    所述第一区域的信息包括所述第一区域的移动网络信息或所述第一小区的地理位置信息。
  29. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至14中任意一项所述的方法。
  30. 一种芯片系统，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片系统的通信设备执行如权利要求1至14中任意一项所述的方法。
  31. 一种通信系统，其特征在于，包括：
    如权利要求15至24中任一项所述的通信设备；和/或
    如权利要求25至28中任一项所述的通信设备。
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