WO2020207126A1 - 一种数据发送方法、装置及计算机可读存储介质 - Google Patents

一种数据发送方法、装置及计算机可读存储介质 Download PDF

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Publication number
WO2020207126A1
WO2020207126A1 PCT/CN2020/076228 CN2020076228W WO2020207126A1 WO 2020207126 A1 WO2020207126 A1 WO 2020207126A1 CN 2020076228 W CN2020076228 W CN 2020076228W WO 2020207126 A1 WO2020207126 A1 WO 2020207126A1
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Prior art keywords
address
addressing
data
information
adaptation layer
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PCT/CN2020/076228
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English (en)
French (fr)
Inventor
刘航
李明超
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华为技术有限公司
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Priority to KR1020217036109A priority Critical patent/KR102552951B1/ko
Priority to EP20787083.3A priority patent/EP3952351A4/en
Priority to JP2021559667A priority patent/JP7177287B2/ja
Publication of WO2020207126A1 publication Critical patent/WO2020207126A1/zh
Priority to US17/496,928 priority patent/US20220030400A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/321—Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/10—Mapping addresses of different types
    • H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
    • 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
    • H04W4/30—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
    • 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
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • This application relates to the field of communication technology, and in particular to a data sending method, device and computer-readable storage medium.
  • V2V Vehicle-to-vehicle
  • V2I vehicle-to-infrastructure
  • V2P vehicle-to-pedestrian
  • V2P vehicle-to-network
  • V2N vehicle-to-network
  • the 3rd Generation Partnership Project (3rd Generation Partner Project, 3GPP) standardized Long Term Evolution (Long Term Evolution, LTE)-V2X communication protocol can support V2X communication based on the direct link, that is, it does not need to be forwarded through a relay device (such as a base station) You can communicate directly.
  • 3rd Generation Partner Project 3rd Generation Partner Project, 3GPP
  • LTE Long Term Evolution
  • LTE-V2X communication protocol can support V2X communication based on the direct link, that is, it does not need to be forwarded through a relay device (such as a base station) You can communicate directly.
  • the embodiments of the present application provide a data sending method, device, and computer-readable storage medium to solve the technical problem that V2X communication based on direct link cannot support unicast or multicast communication in the prior art.
  • an embodiment of the present application provides a data sending method, including: an adaptation layer obtains first data and attribute information corresponding to the first data from a network layer, wherein the attribute information includes destination address information; The adaptation layer generates a first access layer address according to the destination address information; the adaptation layer transmits the first data and the first access layer address to the access layer; the access layer is based on The first access layer address sends the first data through a through link.
  • the foregoing adaptation layer, network layer, and access layer are all protocol stacks of the first device.
  • the first access layer address since the first access layer address is generated by the adaptation layer according to the destination address information, the first access layer address can indicate the destination device corresponding to the first data, so that the destination device is receiving data At this time, it is possible to determine whether the first data is data sent to itself according to the first access layer address, and receive the first data when it is determined that the own address matches the first access layer address. Furthermore, when the destination address information indicates the address of a single destination device, unicast communication is realized, and when the destination address information indicates the addresses of multiple destination devices at the same time, multicast communication is realized. It effectively solves the technical problem that the V2X communication based on the direct link cannot support unicast or multicast communication in the prior art.
  • the adaptation layer may also determine that the addressing type corresponding to the first data is address-based.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based addressing. At least the following four implementation solutions are possible:
  • Solution 1 The adaptation layer determines the addressing type as address-based addressing according to the destination address information
  • Solution 2 The adaptation layer determines the addressing type as address-based addressing according to the service type information
  • Solution 3 The adaptation layer determines that the addressing type corresponding to the first data is address-based addressing according to the service type information and the destination address information;
  • Solution 4 The adaptation layer determines, according to the transmission mode indication information, that the addressing type corresponding to the first data is address-based.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based addressing, and there may be at least the following three specific types: Method to realize:
  • Type 1 The adaptation layer determines that the addressing type is address-based addressing according to the value of the destination address information
  • the adaptation layer determines that the addressing type is address-based; or, when the value of the destination address information is less than or equal to the first threshold, When the threshold is two, the adaptation layer determines that the addressing type is address-based; or, when the value of the destination address information is greater than or equal to the third threshold and less than or equal to the fourth threshold, so The adaptation layer determines that the addressing type is address-based.
  • Type 2 The adaptation layer determines that the addressing type is address-based addressing according to the number of bits of the destination address information
  • the adaptation layer determines that the addressing type is address-based; or, when the number of bits of the destination address information is less than or equal to the second number of bits, the adaptation layer The allocation layer determines that the addressing type is address-based; or, when the number of bits of the destination address information is greater than or equal to the third bit number and less than or equal to the fourth bit number, the adaptation layer determines the addressing type as address-based addressing .
  • Type 3 The adaptation layer determines that the addressing type is address-based addressing according to a preset field in the destination address information.
  • the preset field indicates that the addressing type of the first data is address-based addressing.
  • the preset field indicates that the transmission mode corresponding to the first data is non-broadcast, and accordingly, when the adaptation layer determines that the preset field in the destination address information indicates the first data When the corresponding transmission mode is non-broadcast, the adaptation layer determines that the addressing type is address-based.
  • the preset field indicates that the transmission mode corresponding to the first data is unicast or multicast, and correspondingly, when the adaptation layer determines that the preset field in the destination address information indicates the When the transmission mode corresponding to the first data is unicast or multicast, the adaptation layer determines that the addressing type is address-based.
  • the attribute information obtained by the adaptation layer from the network layer may include not only destination address information, but also service type information, where the service The type information indicates the service type corresponding to the first data.
  • the adaptation layer determines, according to the service type information, that the addressing type corresponding to the first data is address-based addressing, and there may be at least the following three specific implementation manners:
  • Type 1 The adaptation layer determines that the addressing type is address-based addressing according to the value of the service type information
  • the adaptation layer determines that the addressing type is address-based; or, when the value of the service type information is less than or equal to the first
  • the threshold is six
  • the adaptation layer determines that the addressing type is address-based; or, when the value of the service type information is greater than or equal to the seventh threshold and less than or equal to the eighth threshold, so The adaptation layer determines that the addressing type is address-based.
  • Type 2 The adaptation layer determines that the addressing type is address-based addressing according to the number of bits of the service type information
  • the adaptation layer determines that the addressing type is address-based; or, when the number of bits of the service type information is less than or equal to the sixth bit number, the adaptation layer The allocation layer determines that the addressing type is address-based; or, when the number of service type information bits is greater than or equal to the seventh bit number and less than or equal to the eighth bit number, the adaptation layer determines that the addressing type is address-based addressing. site.
  • Type 3 The adaptation layer determines that the addressing type is address-based addressing according to a preset field in the service type information.
  • the preset field indicates that the addressing type of the first data is address-based addressing.
  • the preset field indicates that the transmission mode corresponding to the first data is non-broadcast, and accordingly, when the adaptation layer determines that the preset field in the service type information indicates the first data When the corresponding transmission mode is non-broadcast, the adaptation layer determines that the addressing type is address-based.
  • the preset field indicates that the transmission mode corresponding to the first data is unicast or multicast. Accordingly, when the adaptation layer determines that the preset field in the service type information indicates that the When the transmission mode corresponding to the first data is unicast or multicast, the adaptation layer determines that the addressing type is address-based.
  • the adaptation layer determines the addressing type corresponding to the first data according to the service type information and the destination address information as a specific implementation method based on address addressing It can be a combination of any of the above-mentioned scheme one and/or scheme two.
  • the adaptation layer determines that the addressing type is address-based. For another example, when the value of the destination address information is greater than or equal to the first threshold threshold, and the value of the service type information is greater than or equal to the fifth threshold threshold, the adaptation layer determines that the addressing type is based on address Addressing.
  • address Addressing For example, only two exemplary descriptions are given here, and there may be other combinations in specific implementation.
  • the service type information in the foregoing solution 2 and solution 3 may be an application ID (application ID, AID)/provider service identifier (provider service identifier, PSID).
  • the attribute information obtained by the adaptation layer from the network layer may include not only destination address information, but also transmission mode indication information.
  • the transmission mode indication information indicates the transmission mode corresponding to the first data.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based, and there are at least the following three implementation manners:
  • Type 1 When the transmission mode indication information indicates address-based addressing, the adaptation layer determines that the addressing type corresponding to the first data is address-based addressing;
  • Type 2 When the transmission mode indication information indicates that the transmission mode corresponding to the first data is unicast or multicast, the adaptation layer determines that the addressing type corresponding to the first data is address-based;
  • Type 3 When the transmission mode indication information indicates that the transmission mode corresponding to the first data is non-broadcast, the adaptation layer determines that the addressing type corresponding to the first data is address-based.
  • the adaptation layer can obtain the first access layer address by intercepting a preset field in the destination address information, where the preset field can be anywhere on the destination address information
  • the field of this application is not specifically limited.
  • the adaptation layer may use the field on the upper 24 bits or the field on the lower 24 bits in the destination address information as the first access layer address.
  • the adaptation layer may splice the first preset field and the second preset field in the destination address information as the first access layer address.
  • the specific splicing method is not specifically limited in the embodiment of this application.
  • the adaptation layer may also determine that the addressing type is not based on address addressing, such as addressing based on service type. Then, the adaptation layer can generate the second access layer address according to the service type information, and then the adaptation layer transfers the first data and the second access layer address to the access layer, so that the access layer passes through the second access layer address based on the The through link sends the first data.
  • the receiving end device can only identify the service type corresponding to the first data according to the second access layer address, and cannot identify the first data corresponding Therefore, only broadcast communication can be realized in this way.
  • an embodiment of the present application provides a data sending device, including:
  • An adaptation layer module configured to obtain first data and attribute information corresponding to the first data from the network layer, where the attribute information includes destination address information; and generate a first access layer address according to the destination address information; Passing the first data and the first access layer address to the access layer module;
  • the access layer module is configured to send the first data through a through link based on the first access layer address.
  • the adaptation layer module is further configured to: before generating the first access layer address according to the destination address information, determine that the addressing type corresponding to the first data is address-based addressing.
  • the specific implementation manners of operations performed by the adaptation layer module and the access layer module may refer to the specific implementation manners when the adaptation layer and the access layer execute corresponding method steps in the first aspect, respectively, which will not be repeated here.
  • an embodiment of the present application provides a data sending device, which includes at least one processor, and a memory and a communication interface communicatively connected with the at least one processor; wherein the memory stores the An instruction executed by at least one processor, and the at least one processor executes the method described in the first aspect or any one of the possible implementation manners of the first aspect by executing the instruction stored in the memory.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program includes program instructions that, when executed by a computer, cause the The computer executes the method described in the foregoing first aspect or any one of the possible implementations of the first aspect.
  • Figure 1 is a schematic diagram of V2X communication based on a through link
  • Figure 2 is a schematic diagram of V2X communication based on cellular network (eNB) transit;
  • eNB cellular network
  • Figure 3 is a schematic diagram of the ITS system data transmission protocol stack architecture
  • Figure 4 is a schematic diagram of a possible specific ITS system data transmission protocol stack architecture
  • Figure 5 is a schematic diagram of the header structure of a through link MAC layer data packet
  • 6A and 6B are schematic diagrams of two application scenarios in an embodiment of the application.
  • FIG. 7 is a flowchart of a service data transmission method provided by an embodiment of the application.
  • Figure 8 is a possible schematic diagram of destination address information
  • FIG. 9 is a schematic structural diagram of a possible data sending device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of another possible data sending device provided by an embodiment of this application.
  • a terminal refers to a device that provides voice and/or data connectivity to a user, such as a handheld device with a wireless connection function, or a processing device connected to a wireless modem.
  • the terminal can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • the terminal may include a vehicle, user equipment (UE), wireless terminal equipment, mobile terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), Remote station (remote station), access point (access point, AP), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), or User equipment (user device), etc.
  • NB-IoT narrowband internet of things
  • PCS personal communication service
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal may also include a V2X device, for example, an on-broad unit (OBU) in a vehicle, and the following mainly uses a V2X device as an example.
  • a V2X device for example, an on-broad unit (OBU) in a vehicle, and the following mainly uses a V2X device as an example.
  • OBU on-broad unit
  • the base station involved in the embodiment of this application can be used to convert the received air frame and IP packet to each other, as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can be Including Internet Protocol (IP) network equipment.
  • IP Internet Protocol
  • the base station can also coordinate the attribute management of the air interface.
  • a base station can be a network device in a 5G system, such as a next generation Node B (gNB), or a global system for mobile communication (GSM) or code division multiple access (code division multiple access).
  • the base transceiver station (BTS) in access, CDMA) can also be the base station (NodeB) in wideband code division multiple access (WCDMA), or the evolutional base station (evolutional base station) in LTE.
  • Node B, eNB or e-NodeB the embodiment of this application is not limited.
  • V2X Vehicles can obtain road condition information or receive information in time through V2V, V2I, V2P, or V2N. These communication methods can be collectively referred to as V2X communication. Take the most common V2V and V2I as an example: through V2V communication, a vehicle can broadcast its own speed, driving direction, specific location, and whether emergency brakes are stepped on to surrounding vehicles. The surrounding vehicles can obtain such information to enable the driver It can better perceive the traffic conditions outside the line of sight, so as to predict dangerous conditions in advance, and then make timely avoidance.
  • roadside infrastructure can also provide vehicles with various service information and data network access. Functions such as non-stop toll collection and in-car entertainment have greatly improved traffic intelligence. ⁇ .
  • the network used for V2X communication is generally called the Internet of Vehicles.
  • the PC5 interface is a direct communication interface between the terminal device and the terminal device introduced in the D2D project of the 3rd generation partnership project (3rd generation partnership project, 3GPP) version 12 (Rel-12).
  • Neighboring terminals can transmit data through direct links within the effective communication range of PC5, without forwarding through central nodes (such as base stations), or transmitting information through traditional cellular links, making communication faster convenient.
  • the direct link communication between V2X devices is also carried out through the PC5 interface.
  • the technology described in this article can be used in various communication systems, such as long term evolution (LTE) systems, fifth-generation mobile communication systems (5G), and other such communication systems.
  • LTE long term evolution
  • 5G fifth-generation mobile communication systems
  • the technical solutions in the embodiments of the present application are not limited to V2X communication, and can also be used for other device-to-device communication, machine-to-machine communication, or communication in other IoT systems.
  • the vehicle network aims to improve road safety, improve traffic operation efficiency and provide users with rich streaming media services through communication technologies such as V2V, V2I, V2P, and V2N.
  • Intelligent transportation system has strict requirements for low-latency and high-reliability communication.
  • the LTE-V2X technology standardized by 3GPP has the advantages of short delay, fast speed, wide coverage, and high reliability. It is a very good Internet of Vehicles technology.
  • LTE-V2X supports two-way communication between cars, cars and pedestrians, cars and infrastructure, and cars and networks. In the following, V2V communication is mainly used as an example for description.
  • LTE-V2X communication supports two communication modes, including V2X communication based on direct link as shown in FIG. 1 and V2X communication based on cellular network (eNB) relay as shown in FIG. 2.
  • eNB cellular network
  • the terminal in FIG. 1 is implemented by taking a vehicle as an example. In practical applications, it may also be other types of terminals, such as mobile phones, computers, etc., which are not specifically limited in the embodiments of the present application.
  • V2X communication based on direct link refers to the direct communication between the terminal sending data and the terminal receiving data through a direct link.
  • the link through which the terminal realizes direct communication is called a sidelink (SL), which is also called a side link.
  • Uplink; V2V communication based on cellular network relay refers to the communication between the terminal and the terminal through the base station relay, that is, the data sent by the terminal sending the data needs to be forwarded to the terminal receiving the data through the base station.
  • the specific UE sends data to the base station through the uplink with the base station, and the base station sends the data to other UEs through the downlink with other UEs.
  • V2X communication based on the direct link is divided into two communication modes: base station scheduling mode (mode3) and autonomous resource selection scheduling (mode 4).
  • the terminal accesses the LTE network, and the base station is responsible for allocating resources for direct link transmission of vehicle-to-vehicle direct communication, and the terminal uses the resources scheduled by the base station for direct link communication.
  • the base station configures a resource pool for the terminal through radio resource control (RRC) signaling (including dedicated RRC signaling or system information block (system information block, SIB) messages), and the terminal autonomously follows Obtain resources from the resource pool for direct link communication.
  • RRC radio resource control
  • SIB system information block
  • the terminal obtains resources from the pre-configured resource pool to perform direct link communication.
  • the manner in which the terminal autonomously obtains resources from the resource pool may be a random resource selection method, a resource selection method based on interception, or other methods, which is not limited in the embodiment of the present application.
  • Figure 3 is a schematic diagram of the ITS system data transmission protocol stack architecture. As shown in Figure 3, the protocol stack architecture at least includes an application layer, a network layer, an adaptation layer, and an access layer.
  • the access layer is used to provide communication network node addressing, communication media access control, data transmission communication physical connection establishment, maintenance, and maintenance layer.
  • the access layer can provide communication interfaces for communication between devices.
  • the entry layer may include a variety of different access technologies, such as LTE-V2X PC5 interface, wireless network (wireless fidelity, Wi-Fi) interface, etc. Different access technologies may correspond to different communication interfaces.
  • the network layer is located above the access layer and is used to implement network topology control, data routing, and device data transmission and application communication services;
  • the application layer is located above the network layer and is used to provide users with various applications and service methods;
  • the adaptation layer is used to provide different access technologies and different network and/or transmission protocols Transmission adaptation function between.
  • the adaptation layer receives the data packet delivered by the upper layer (above the adaptation layer), distinguishes the underlying (below the adaptation layer) access technology (such as LTE-V2X PC5 or Wi-Fi) used by the data packet, and Submit the data packet to the bottom layer (under the adaptation layer) conforming to the corresponding access technology for transmission; or, receive the data packet from the bottom layer (under the adaptation layer), and distinguish the upper layer (adaptation layer) to which the data packet belongs Above) protocol type, and submit the data packet to the corresponding upper layer protocol for processing.
  • different networks and/or transmission protocols and different access layer technologies may use different address information.
  • the adaptation layer generates the access layer address according to the destination address information corresponding to the data packet, and submits the access layer address to the access layer. Into the layer.
  • the adaptation layer is a logical layer, and its function can exist as an independent layer, and also contained in the "generalized network layer” or “generalized access layer” (for example, as a sublayer).
  • the "generalized network layer” includes at least the functions of the network layer and the adaptation layer in the present invention.
  • the "generalized access layer” includes at least the functions of the access layer and the adaptation layer in the present invention.
  • FIG. 4 is a schematic diagram of a possible specific ITS system data transmission protocol stack architecture, in which the adaptation layer serves as a sublayer of the "generalized network layer".
  • the access layer protocol stack includes the packet data convergence protocol (PDCP) layer, the radio link control protocol (radio link control, RLC) layer, and the media from top to bottom.
  • PDCP packet data convergence protocol
  • RLC radio link control
  • Access control protocol medium access control, MAC
  • PHY physical layer
  • the PDCP layer can be used to process the data of the upper layer (above the PDCP layer). For example, in the user plane, the PDCP layer can perform header compression and encryption on the data after receiving the data from the upper layer, and then submit it to the RLC layer. In addition, the PDCP layer can also provide sequential submission and repeated packet detection functions to the upper layer. For example, in the control plane, the PDCP layer can provide RRC signaling transmission services for the upper layer, and implement encryption and consistency protection of RRC signaling.
  • the MAC layer provides data transmission services on logical channels. Logical channels can generally be divided into two categories: control channels and traffic channels. The control channel is used to transmit control plane information, and the traffic channel is used to transmit user plane information. In addition, the MAC layer can also be responsible for mapping logical channels to transport channels. Below the MAC layer is the PHY layer. The PHY layer is mainly responsible for mapping transmission channels to physical channels.
  • the network layer may include the network protocol and/or transmission protocol of the open systems interconnection model (OSI), which is responsible for data interaction with different applications, and provides connection-oriented services and/or data forwarding.
  • OSI open systems interconnection model
  • the network layer can include dedicated short message protocol (DSMP), geographic location-based network protocol (GeoNetworking), and wireless access short message protocol (WAVE short message protocol, WSMP; wireless access) in the car networking environment.
  • DSMP dedicated short message protocol
  • GeoNetworking geographic location-based network protocol
  • WAVE short message protocol WAVE short message protocol
  • WSMP wireless access short message protocol
  • at least one of non-IP (non-IP) network protocols such as in vehicle environment (WAVE), fast network and transport layer protocol (FNTP), and/or IP network protocol.
  • the network layer may also include transmission protocols such as user datagram protocol (UDP)/transmission control protocol (TCP).
  • UDP user datagram protocol
  • TCP transmission control protocol
  • the network layer transmits data packets of interest to
  • the network layer may only include one of the non-IP protocols, for example, dedicated short message protocol (dedicated short message protocol, DSMP).
  • dedicated short message protocol dedicated short message protocol, DSMP
  • the network layer can be used to distinguish different application layer services through the application ID (AID)/provider service identifier (PSID).
  • AID application ID
  • PSID provider service identifier
  • Information can be transferred between layers through interfaces (also known as Service Access Point (SAP)).
  • interfaces also known as Service Access Point (SAP)
  • the application layer and the network layer can communicate information in the form of service primitives (SP) (primitives for short) through the interface SAP1
  • SP service primitives
  • the network layer and the adaptation layer can use primitives through the interface SAP2.
  • Information is transferred in the form of, the adaptation layer and the access layer can transfer information in the form of primitives through the interface SAP3.
  • the request is sent from the upper layer to the lower layer, requesting the lower layer to provide specified services, such as data transmission.
  • the instructions are sent from the lower layer to the upper layer to notify the upper layer that something has happened, for example, the lower layer receives data sent by a remote peer entity.
  • the response is sent from the upper layer to the lower layer, which is a response to the instructions sent by the lower layer to the upper layer.
  • the confirmation is sent from the lower layer to the upper layer, indicating that the service requested by the upper layer has been completed and is confirmed.
  • the primitives (also called service primitives) passed between the network layer and the adaptation layer through SAP2 can include:
  • ProtocolType Network and/or transmission protocol type information
  • the primitives transmitted by the adaptation layer and the access layer through SAP3 can include:
  • Source_address //Access layer source address information
  • primitives contain one or more primitive parameters.
  • the ApplicationIdentifier, NetworkProtocolType, Data, etc. contained in the above primitive are all primitive parameters.
  • the destination address information indicates the destination address of the data transmission
  • the network and/or transmission protocol type information indicates the network and/or transmission protocol corresponding to the data, such as IP, Non-IP.
  • the destination address information can also indicate which Non-ip protocol the data corresponds to.
  • WSMP, DSMP, FNTP, and GeoNetworking are all typical Non-IP protocols.
  • the network and/or transmission protocol type information may indicate that the data corresponds to the DSMP protocol.
  • V2X communication based on direct link only supports broadcast communication mode, and does not support unicast or multicast communication mode. The main reasons are as follows:
  • the access layer uses the version number information carried in the MAC layer data packet header to indicate the communication mode.
  • FIG. 5 is a schematic diagram of the header structure of a through-link MAC layer data packet, and the V in the field (Oct) 1 represents the version number.
  • the current LTE V2X protocol only defines the use of "0011" to represent the broadcast transmission mode, and currently does not define the unicast transmission mode or multicast transmission mode;
  • the header of the MAC layer data packet contains a 24-bit source address (source_address, SRC) and destination address (destination_address, DST).
  • This address is called the access layer address, also known as It is a layer 2 address or MAC address.
  • DST is generated based on the application ID (AID) or provider service identifier (PSID) delivered by the upper layer (that is, the layer above the access layer), so it can only be used to indicate the corresponding data
  • AID application ID
  • PSID provider service identifier
  • the service type cannot identify the destination device corresponding to the data (the destination device may also be referred to as the peer device in this article), so it cannot support unicast or multicast communication.
  • the V2X communication based on the direct link has a technical problem that it cannot support unicast or multicast communication.
  • an embodiment of the present application provides a data sending method, which obtains data and attribute information corresponding to the data from the network layer through the adaptation layer, where the attribute information includes destination address information; then the adaptation layer Generate the first access layer address according to the destination address information; then, the adaptation layer transfers the data and the first access layer address to the access layer, so that the access layer sends through the through link based on the first access layer address The data. Since the first access layer address is generated by the adaptation layer according to the destination address information obtained from the network layer, the first access layer address can indicate the destination device corresponding to the data, which can effectively support V2X communication based on the through link Realize unicast or multicast communication.
  • Figure 6A may be an application scenario of an embodiment of this application.
  • Figure 6A includes a first device, a second device, and a base station.
  • the first device and the second device are based on a direct link, for example, the first device sends data to the second device through the direct link.
  • the destination device corresponding to the first device may also have other devices, which are not specifically limited in the embodiment of the present application.
  • FIG. 6B may be another application scenario of an embodiment of this application.
  • the first device may simultaneously communicate with multiple devices (such as the second device and the third device) based on a direct link.
  • the second device and the third device in FIG. 6B are only an example.
  • the number of devices in the embodiment of this application is different. Make specific restrictions.
  • the terminals in FIG. 6A and FIG. 6B are all examples of vehicles.
  • An embodiment of the present application provides a service data transmission method, which can be executed by the first device in FIG. 6A and FIG. 6B. Please refer to Figure 7 for a flowchart of this method.
  • the adaptation layer of the first device obtains the first data and the attribute information corresponding to the first data from the network layer of the first device.
  • the adaptation layer may obtain the first data and the attribute information corresponding to the first data from the network layer through the SAP2 primitive of the interface between the adaptation layer and the network layer.
  • the attribute information includes at least destination address information.
  • the destination address information may indicate one destination device or multiple destination devices, which is not specifically limited in the embodiment of the present application.
  • the destination address information may be a unicast address, such as the address of the second device, and the destination device corresponding to the first device may only have the second device.
  • the destination address information may be a multicast address, and then the destination address information may correspond to multiple destination devices, such as the second device and the third device.
  • the attribute information may also have other information, such as source address information corresponding to the first data, network and/or transmission protocol type information (used to indicate the network and/or transmission protocol , Such as IP, WSMP, FNTP, DSMP, etc.), AID, PSID, etc., which are not specifically limited in the embodiment of this application.
  • the corresponding relationship between the first data and the attribute information may be implicit or explicit, which is not specifically limited in the embodiment of the present application.
  • the destination address information and the source address information may be indicated by two different primitives respectively, or may be indicated by one primitive, which is not specifically limited in the embodiment of the present application.
  • the primitive needs to be parsed to obtain the destination address information.
  • the destination address information and the source address information are spliced to form a primitive, and the adaptation layer obtains the destination address information by parsing the low-order field of the primitive.
  • the embodiments of this application do not limit the specific methods and rules for the adaptation layer to resolve the destination address information.
  • the adaptation layer generates a first access layer address according to the destination address information
  • the adaptation layer can obtain the first access layer address by intercepting a preset field in the destination address, where the preset field can be a field at any position on the destination address information.
  • the application embodiment does not make specific restrictions.
  • the adaptation layer may use the field on the upper 24 bits or the field on the lower 24 bits in the destination address information as the first access layer address.
  • the adaptation layer may concatenate the first preset field and the second preset field in the destination address information as the first access layer address.
  • the specific splicing method is not limited in the embodiment of this application.
  • the adaptation layer may also generate the first access layer address according to the destination address information when determining that the addressing type corresponding to the first data is address-based addressing.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based.
  • the specific solutions include but are not limited to the following four solutions:
  • Solution 1 The adaptation layer determines the addressing type as address-based addressing according to the destination address information.
  • the adaptation layer determines that the addressing type is based on the address based addressing according to the destination address information.
  • the specific implementation may further include the following three types:
  • the destination address information can have multiple bits, and the adaptation layer determines the addressing type as address-based addressing according to the value of the destination address information.
  • the adaptation layer may determine that the addressing type is address-based when determining that the value of the destination address information is within a predetermined numerical range.
  • the adaptation layer determines that the addressing type is address-based; or, when the value of the destination address information is less than or equal to the second threshold threshold, the adaptation layer The addressing type is determined to be address-based; or, when the value of the destination address information is greater than or equal to the third threshold and less than or equal to the fourth threshold, the adaptation layer determines that the addressing type is address-based.
  • the above are only examples of some possible forms of the numerical interval. In a specific embodiment, the numerical interval may also have other expression forms, which are not specifically limited in the embodiment of the present application.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based.
  • the above-mentioned threshold thresholds may be pre-configured on the first device (for example, pre-configured on the SIM card of the first device), or may be transmitted to the first device by the base station through RRC signaling.
  • the application embodiment does not make specific restrictions. Among them, dedicated RRC signaling and SIB messages are both called RRC signaling.
  • the destination address information can have multiple bits, and the adaptation layer can determine the addressing type as address-based addressing according to the number of bits of the destination address information.
  • the adaptation layer may determine that the addressing type is address-based when determining that the number of bits of the destination address information is within a predetermined number of bits interval.
  • the adaptation layer determines that the addressing type is address-based; or, when the number of bits of the destination address information is less than or equal to the second number of bits, the adaptation layer The allocation layer determines that the addressing type is address-based; or, when the number of bits of the destination address information is greater than or equal to the third bit number and less than or equal to the fourth bit number, the adaptation layer determines the addressing type as address-based addressing .
  • the bit number interval may also have other manifestations, which are not specifically limited in the embodiment of the present application.
  • the adaptation layer determines that the addressing type is address-based.
  • the above-mentioned preset number of bits may be pre-configured on the first device (such as but not limited to pre-configured on the SIM card of the first device), or may be transmitted to the base station through RRC signaling.
  • the first device the embodiment of this application does not make specific restrictions. Among them, dedicated RRC signaling and SIB messages are both called RRC signaling.
  • the destination address information can have multiple bits, and different bits on the destination address information can have different meanings.
  • the adaptation layer can determine the addressing type as address-based addressing according to the preset field in the destination address information .
  • Figure 8 is a possible schematic diagram of the destination address information.
  • the destination address information has a total of 64 bits.
  • the first 24 bits can be used to identify the company identification (company_id; identification, ID) corresponding to the destination device.
  • 40bits is an extension identifier, and the two together determine the address of the destination device.
  • the preset field on the destination address information indicates that the transmission mode corresponding to the first data is unicast or multicast.
  • the adaptation layer determines that the addressing type is address-based;
  • the first preset field in the destination address information contains 2 bits, where 00 means unicast, 01 means multicast, and 10 means broadcast. Then when the adaptation layer parses that the first preset field is 00, the adaptation layer determines that the addressing type corresponding to the first data is address-based. Among them, the specific position of the first preset field and the meaning represented by the different values can be specified by agreement.
  • the preset field indicates that the addressing type of the first data is address-based addressing.
  • the second preset field in the destination address information contains 1 bits, where 0 represents address-based addressing, and 1 represents service type-based addressing. Then, when the adaptation layer parses that the second preset field is 0, the adaptation layer determines that the addressing type corresponding to the first data is address-based addressing. Among them, the specific position of the second preset field and the meaning represented by the different values can be specified by agreement.
  • the preset field on the destination address information indicates that the transmission mode corresponding to the first data is non-broadcast.
  • the adaptation layer determines that the preset field in the destination address information indicates that the transmission mode corresponding to the first data is non-broadcast. Accordingly, when the adaptation layer determines that the addressing type is address-based.
  • the third preset field in the destination address information contains 1 bits, where 0 means broadcast and 1 means non-broadcast. Then when the adaptation layer parses that the third preset field is 1, the adaptation layer determines that the addressing type corresponding to the first data is address-based. Among them, the specific position of the third preset field and the meaning represented by different values can be stipulated by agreement.
  • Solution 2 The adaptation layer determines the addressing type as address-based addressing according to the service type information.
  • the attribute information obtained by the adaptation layer from the network layer in step S71 may include service type information in addition to destination address information.
  • the service type information is used to indicate the service type corresponding to the first data, such as collision Early warning business, formation driving business, etc.
  • the service type information may specifically be the above application identifier AID or provider service identifier PSID.
  • the service type information can also have multiple bits.
  • the specific implementation manner in which the adaptation layer determines the addressing type to be address-based based on the service type information can further include the following three types:
  • Type 1 The adaptation layer determines the addressing type as address-based addressing according to the value of the service type information.
  • the adaptation layer may determine that the addressing type is address-based when determining that the value of the service type information is within a predetermined numerical range.
  • the adaptation layer determines that the addressing type is address-based; or, when the value of the service type information is less than or equal to the sixth threshold, the adaptation layer The addressing type is determined to be address-based; or, when the value of the service type information is greater than or equal to the seventh threshold and less than or equal to the eighth threshold, the adaptation layer determines that the addressing type is address-based.
  • the above are only examples of some possible forms of the numerical interval. In a specific embodiment, the numerical interval may also have other expression forms, which are not specifically limited in the embodiment of the present application.
  • the adaptation layer determines that the first data corresponds to The addressing type is address-based.
  • the above thresholds may be pre-configured on the fifth device (such as but not limited to pre-configured on the SIM card of the fifth device), or they may be transmitted to the base station through RRC signaling.
  • the embodiment of this application does not make specific restrictions.
  • the adaptation layer can determine the addressing type as address-based addressing according to the number of bits of the service type information.
  • the adaptation layer may determine that the addressing type is address-based when determining that the number of bits of the service type information is within a predetermined bit number interval.
  • the adaptation layer determines that the addressing type is address-based; or, when the number of bits of the service type information is less than the sixth bit number, the adaptation layer determines The address type is address-based addressing; or, when the number of bits of the service type information is greater than or equal to the seventh bit number and less than or equal to the eighth bit number, the adaptation layer determines the addressing type as address-based addressing.
  • the bit number interval may also have other manifestations, which are not specifically limited in the embodiment of the present application.
  • the adaptation layer determines that the addressing type is address-based.
  • the above-mentioned preset number of bits can be pre-configured on the first device (for example, but not limited to pre-configured on the SIM card of the first device), or the base station can use RRC information. If the command is transmitted to the first device, the embodiment of this application does not make specific restrictions.
  • Type 3 Different bits on the service type information can have different meanings, and the adaptation layer can determine the addressing type as address-based addressing according to the preset field in the service type information.
  • the adaptation layer determines that the addressing type is address-based addressing according to the preset field in the service type information.
  • the specific implementation manners may further include the following three types:
  • the preset field on the service type information indicates that the transmission mode corresponding to the first data is unicast or multicast.
  • the adaptation layer determines that the addressing type is address-based addressing;
  • the fourth preset field in the service type information contains 2 bits, where 00 means unicast, 01 means multicast, and 10 means broadcast. Then when the adaptation layer parses that the fourth preset field is 00, the adaptation layer determines that the addressing type corresponding to the first data is address-based. Among them, the specific position of the fourth preset field and the meaning represented by the different values can be specified by agreement.
  • the preset field on the service type information indicates that the addressing type of the first data is address-based addressing.
  • the fifth preset field in the service type information contains 1 bits, where 1 represents address-based addressing, and 0 represents service type-based addressing. Then, when the adaptation layer parses the fifth preset field to be 1, the adaptation layer determines that the addressing type corresponding to the first data is address-based. Among them, the specific position of the fifth preset field and the meaning represented by different values can be specified by agreement.
  • the preset field on the service type information indicates that the transmission mode corresponding to the first data is non-broadcast.
  • the adaptation layer determines that the preset field in the service type information indicates that the transmission mode corresponding to the first data is fee-based broadcasting, the adaptation layer determines that the addressing type is address-based addressing;
  • the sixth preset field in the service type information contains 1 bits, where 0 means broadcast and 1 means non-broadcast. Then, when the adaptation layer parses that the sixth preset field is 1, the adaptation layer determines that the addressing type corresponding to the first data is address-based. Among them, the specific position of the sixth preset field and the meaning represented by different values can be specified by agreement.
  • Solution 3 The adaptation layer determines that the addressing type corresponding to the first data is address-based addressing according to the service type information and the destination address information.
  • the attribute information acquired by the adaptation layer from the network layer in step S71 may include service type information in addition to destination address information.
  • service type information in this embodiment, reference may be made to the specific implementation manner of the service type information in the foregoing manner 2, and details are not described herein again.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based addressing according to the service type information and the destination address information.
  • the specific implementation manner may be a combination of any implementation manners in the above scheme 1 and/or scheme 2.
  • the destination address information includes a seventh preset field, which specifically includes two bits, where 01 means unicast, 00 means multicast, and 11 means broadcast.
  • the first device is also configured with a threshold of 2 ⁇ 24.
  • the adaptation layer parses the seventh preset field as 00, and the value of the destination address information is greater than or equal to 2 ⁇ 24, the adaptation layer determines that the addressing type corresponding to the first data is address-based.
  • the service type information includes an eighth preset field, and the eighth preset field specifically includes one bits, where 0 represents address-based addressing, and 1 represents service type-based addressing.
  • the first device is also configured with a threshold of 2 ⁇ 64. When the adaptation layer parses the eighth preset field as 0, and the value of the service type information is less than or equal to the threshold 2 ⁇ 64, the adaptation layer determines that the addressing type corresponding to the first data is address-based.
  • the service type information includes a ninth preset field, which specifically includes two bits, where 01 means unicast, 00 means multicast, and 11 means broadcast.
  • the first device is also configured with thresholds 2 ⁇ 24 and 2 ⁇ 64.
  • the adaptation layer parses the ninth preset field to be 00 and the value of the destination address information is greater than 2 ⁇ 24 and less than 2 ⁇ 64, the adaptation layer determines that the addressing type corresponding to the first data is address-based.
  • Solution 4 The adaptation layer determines, according to the transmission mode indication information, that the addressing type corresponding to the first data is address-based.
  • the attribute information obtained by the adaptation layer from the network layer in step S71 may include destination address information and transmission mode indication information.
  • the adaptation layer determines that the addressing type corresponding to the first data is address-based addressing; or, when the transmission mode indication information indicates that the transmission mode corresponding to the first data is single When broadcasting or multicasting, the adaptation layer determines that the addressing type corresponding to the first data is address-based; or, when the transmission mode indication information indicates that the transmission mode corresponding to the first data is non-broadcast, the adaptation layer determines the first The addressing type corresponding to the data is address-based.
  • the transmission mode indication information may be a primitive parameter newly added to SAP2, which is specifically used to indicate the addressing type or transmission mode corresponding to the first data.
  • the adaptation layer transmits the first data and the first access layer address to the access layer of the first device
  • the adaptation layer may transfer the first data and the first access layer address to the access layer of the first device through the SAP3 primitive of the interface between the adaptation layer and the access layer.
  • the adaptation layer transmits the first data to the access layer, it may be transmitted in the form of a data packet, and the data packet contains the first data.
  • the first data passes through different protocol layers, each protocol layer will add the header information of the protocol layer.
  • the access layer sends the first data through the through link based on the first access layer address.
  • the access layer adds the first access layer address to the header of the MAC layer data packet carrying the first data.
  • the first device sends out the data packet whose header information contains the first access layer address.
  • the destination device can determine whether the first data in the data packet is data sent to itself according to the header information in the data packet, and when it determines that its own address matches the first access layer address in the data packet Receive the first data in the data packet. Furthermore, when the destination address information indicates the address of a single destination device, unicast communication is realized, and when the destination address information indicates the addresses of multiple destination devices at the same time, multicast communication is realized.
  • the adaptation layer of the first device in the embodiment of the present application obtains the first data and the attribute information corresponding to the first data from the network layer, where the attribute information includes destination address information; then the adaptation layer according to the purpose The address information generates the first access layer address; then, the adaptation layer transmits the first data and the first access layer address to the access layer, so that the access layer sends the first access layer address through the through link based on the first access layer address. data. Since the first access layer address is generated by the adaptation layer according to the destination address information, the first access layer address can indicate the destination device corresponding to the first data, so that when the destination device receives data, it can be based on the first data.
  • An access layer address determines whether the first data is data sent to itself, and receives the first data when it is determined that its own address matches the first access layer address. Furthermore, when the destination address information indicates the address of a single destination device, unicast communication is realized, and when the destination address information indicates the addresses of multiple destination devices at the same time, multicast communication is realized. It effectively solves the technical problem that the V2X communication based on the direct link cannot support unicast or multicast communication in the prior art.
  • the addressing type is not based on address addressing, for example, based on service type addressing.
  • the adaptation layer may generate the second access layer address according to the service type information, and then the adaptation layer will combine the first data and the second access layer The address is transferred to the access layer of the first device, so that the access layer sends the first data through the through link based on the second access layer address.
  • the receiving end device can only identify the service type corresponding to the first data according to the second access layer address, and cannot identify the first data corresponding Therefore, only broadcast communication can be realized in this way.
  • FIG. 9 is a schematic diagram of a possible structure of the data sending device.
  • the data sending device 900 includes:
  • the adaptation layer module 901 is configured to obtain first data and attribute information corresponding to the first data from the network layer, where the attribute information includes destination address information; and the first access layer address is generated according to the destination address information ; Pass the first data and the first access layer address to the access layer module 404;
  • the access layer module 902 is configured to send the first data through a through link based on the first access layer address.
  • the adaptation layer module 901 is further configured to: before generating the first access layer address according to the destination address information, determine that the addressing type corresponding to the first data is address-based.
  • the adaptation layer module 901 when the adaptation layer module 901 determines that the addressing type corresponding to the first data is address-based addressing, it may specifically determine that the addressing type is address-based addressing according to the value of the destination address information. ; Or it is determined that the addressing type is address-based addressing according to the number of bits of the destination address information; or it is determined that the addressing type is address-based addressing according to a preset field in the destination address information.
  • the adaptation layer module 901 determines that the addressing type is address-based based on the value of the destination address information, it is specifically used for: when the destination address information When the value of is greater than or equal to the first threshold, the addressing type is determined to be address-based; or, when the value of the destination address information is less than or equal to the second threshold, the addressing type is determined to be based on Address addressing; or, when the value of the destination address information is greater than or equal to the third threshold and less than or equal to the fourth threshold, determining that the addressing type is address-based.
  • the preset field may indicate that the addressing type of the first data is address-based addressing, that is, when the preset field indicates the addressing type of the first data
  • the adaptation layer module 901 determines that the addressing type is address-based addressing; or, the preset field may indicate that the transmission mode corresponding to the first data is non-broadcast, correspondingly
  • the adaptation layer module 901 determines that the addressing type is address-based addressing; or,
  • the preset field indicates that the transmission mode corresponding to the first data is unicast or multicast, and correspondingly, when the preset field in the destination address information indicates that the transmission mode corresponding to the first data is single When broadcasting or multicasting, it is determined that the addressing type is address-based.
  • the adaptation layer module 901 may determine, according to the service type information, that the addressing type corresponding to the first data is address-based addressing.
  • the attribute information may further include service type information corresponding to the first data, wherein the service type information indicates the service type corresponding to the first data.
  • the adaptation layer module 901 when the adaptation layer module 901 determines that the addressing type corresponding to the first data is address-based addressing according to the service type information, it may specifically determine the addressing according to the value of the service type information.
  • the type is address-based addressing; or the addressing type is determined to be address-based addressing according to the number of bits of the service type information; or the addressing type is determined according to a preset field in the service type information For address-based addressing.
  • the adaptation layer module 901 determines that the addressing type is address-based addressing according to the value of the service type information, it is specifically used for: when the service type information When the value of is greater than or equal to the fifth threshold, it is determined that the addressing type is address-based; or, when the value of the service type information is less than or equal to the sixth threshold, it is determined that the addressing type is based on Address addressing; or, when the value of the service type information is greater than or equal to the seventh threshold and less than or equal to the eighth threshold, determining that the addressing type is address-based.
  • the preset field may indicate that the addressing type of the first data is address-based addressing, that is, when the preset field indicates the addressing type of the first data
  • the adaptation layer module 901 determines that the addressing type is address-based addressing; or, the preset field indicates that the transmission mode corresponding to the first data is non-broadcast. Accordingly, When the preset field in the service type information indicates that the transmission mode corresponding to the first data is non-broadcast, it is determined that the addressing type is address-based addressing; or, the preset field indicates the The transmission mode corresponding to the first data is unicast or multicast. Accordingly, when the preset field in the service type information indicates that the transmission mode corresponding to the first data is unicast or multicast, it is determined The addressing type mentioned is address-based.
  • the above service type information may be AID or PSID.
  • the adaptation layer module 901 when the adaptation layer module 901 determines that the addressing type corresponding to the first data is address-based, it may determine the first data according to the transmission mode indication information.
  • the corresponding addressing type is address-based.
  • the attribute information may further include transmission mode indication information corresponding to the first data, wherein the transmission mode indication information indicates the transmission mode corresponding to the first data.
  • the adaptation layer module 901 determines that the addressing type is address-based.
  • the adaptation layer module 901 determines that the addressing type is address-based.
  • the adaptation layer module 901 is specifically configured to: use a field on the upper 24 bits or a field on the lower 24 bits in the destination address information as the first access layer address .
  • an embodiment of the present application also provides a data sending device 1000.
  • the apparatus 1000 includes at least one processor 1001, and a memory 1002 and a communication interface 1003 that are communicatively connected to the at least one processor 1001; wherein the memory 1002 stores data that can be used by the at least one processor. Instructions executed by 1001, the at least one processor 1001 executes the instructions stored in the memory 1002 and uses the communication interface 1003 to execute the data transmission method described in the embodiment of the present application.
  • the processor 1001 may specifically include a central processing unit (CPU), an application specific integrated circuit (ASIC), which may be one or
  • the multiple integrated circuits used to control program execution may be hardware circuits developed using field programmable gate arrays (FPGA), or baseband processors.
  • the processor 1001 may include at least one processing core.
  • the memory 1002 may include a read only memory (ROM), a random access memory (RAM), and a disk memory.
  • the memory 1002 is used to store data required by the processor 1001 during operation.
  • the method and device described in this application are based on the same technical concept, and because the principles of the method and device to solve the problem are similar, the specific implementation of the operation performed by the at least one processor 1001 above can refer to the corresponding steps in the above data transmission method in the embodiment of this application. Therefore, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program includes program instructions that, when executed by a computer, cause the computer to execute the The data transmission method described in the application embodiment.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another readable storage medium. For example, the computer instructions may be passed from a website, computer, server, or data center.
  • Wired such as coaxial cable, optical fiber, digital subscriber line (DSL)
  • wireless such as infrared, wireless, microwave, etc.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital versatile disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)). ))Wait.

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Abstract

本申请实施例提供一种数据发送方法、装置及计算机可读存储介质,本实施例提供的方法提升了电动汽车的自动驾驶或先进驾驶辅助系统(Advanced Driver Assistant System，ADAS)能力，可以应用于车联网。本实施例的方法中，适配层从网络层获取第一数据以及所述第一数据对应的属性信息，其中，所述属性信息包括目的地址信息。该适配层根据所述目的地址信息生成第一接入层地址。该适配层将所述第一数据和所述第一接入层地址传递到接入层。该接入层基于所述第一接入层地址通过直通链路发送所述第一数据。

Description

一种数据发送方法、装置及计算机可读存储介质
相关申请的交叉引用
本申请要求在2019年04月08日提交中国专利局、申请号为201910277864.0、申请名称为“一种数据发送方法、装置及计算机可读存储介质”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
本申请涉及通信技术领域，尤其涉及一种数据发送方法、装置及计算机可读存储介质。
背景技术
车载终端可以通过车辆与车辆(vehicle to vehicle，V2V)通信、车辆与路边基础设施(vehicle to infrastructure，V2I)通信、车辆与行人(vehicle to pedestrian，V2P)通信或者车辆与网络(vehicle to network，V2N)通信等通信技术来及时获取路况信息或接收信息服务，这些通信方式可以统称为V2X通信。
第三代合作伙伴计划(3rd Generation Partner Project，3GPP)标准化的长期演进(Long Term Evolution，LTE)-V2X通信协议可以支持基于直通链路的V2X通信，即不需要通过中转设备(例如基站)转发就可以直接进行通信。
但是，在目前LTE-V2X协议中，仅能支持直通链路上的广播传输方式，无法支持单播或者组播传输方式。
发明内容
本申请实施例提供一种数据发送方法、装置及计算机可读存储介质，用以解决现有技术中基于直通链路的V2X通信无法支持单播或组播通信的技术问题。
第一方面，本申请实施例提供一种数据发送方法，包括：适配层从网络层获取第一数据以及所述第一数据对应的属性信息，其中，所述属性信息包括目的地址信息；所述适配层根据所述目的地址信息生成第一接入层地址；所述适配层将所述第一数据和所述第一接入层地址传递到接入层；所述接入层基于所述第一接入层地址通过直通链路发送所述第一数据。
上述适配层、网络层、以及接入层均为第一设备的协议栈。
本申请实施例中，由于第一接入层地址是适配层根据目的地址信息生成的，所以第一接入层地址可以指示第一数据对应的目的端设备，这样使得目的端设备在接收数据时，可以根据该第一接入层地址确定第一数据是否是发给自身的数据，并在确定自身的地址和第一接入层地址匹配时接收该第一数据。进而，当上述目的地址信息指示单个目的端设备的地址时，就实现了单播通信，当上述目的地址信息同时指示了多个目的端设备的地址时，就实现了组播通信。有效地解决了现有技术中基于直通链路的V2X通信无法支持单播或组播通信的技术问题。
一种可能的设计中，所述适配层根据所述目的地址信息生成第一接入层地址之前，还可以确定所述第一数据对应的寻址类型为基于地址寻址。
为了提高方案的灵活性，在本申请实施例中，所述适配层确定所述第一数据对应的寻 址类型为基于地址寻址，至少可以有如下四种实现方案：
方案一、适配层根据目的地址信息确定寻址类型为基于地址寻址；
方案二、适配层根据业务类型信息确定寻址类型为基于地址寻址；
方案三、适配层根据业务类型信息和目的地址信息确定第一数据对应的寻址类型为基于地址寻址；
方案四、适配层根据传输模式指示信息确定第一数据对应的寻址类型为基于地址寻址。
为了进一步提高方案的灵活性，一种可能的设计中，在上述方案一中，所述适配层确定所述第一数据对应的寻址类型为基于地址寻址，至少可以有如下三种具体实现方式：
第1种：所述适配层根据所述目的地址信息的值确定所述寻址类型为基于地址寻址；
例如，当所述目的地址信息的值大于或者等于第一阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者，当所述目的地址信息的值小于或者等于第二阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者，当所述目的地址信息的值大于或者等于第三阈值门限且小于或者等于第四阈值门限时，所述适配层确定所述寻址类型为基于地址寻址。
第2种：所述适配层根据所述目的地址信息的比特数确定所述寻址类型为基于地址寻址；
例如，当目的地址信息的比特数大于或者等于第一比特数时，适配层确定寻址类型为基于地址寻址；或者，当目的地址信息的比特数小于或者等于第二比特数时，适配层确定寻址类型为基于地址寻址；或者，当目的地址信息的比特数大于或者等于第三比特数且小于或者等于第四比特数时，适配层确定寻址类型为基于地址寻址。
第3种：所述适配层根据所述目的地址信息中的预设字段确定所述寻址类型为基于地址寻址。
例如，所述预设字段指示所述第一数据的寻址类型为基于地址寻址。又如，所述预设字段指示所述第一数据对应的传输模式为非广播，相应的，当所述适配层确定所述目的地址信息中的所述预设字段指示所述第一数据对应的传输模式为非广播时，所述适配层确定所述寻址类型为基于地址寻址。又如，所述预设字段指示所述第一数据对应的传输模式为单播或组播，相应的，当所述适配层确定所述目的地址信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，所述适配层确定所述寻址类型为基于地址寻址。
为了进一步提高方案的灵活性，一种可能的设计中，在上述方案二中，适配层从网络层获取的属性信息除了包括目的地址信息外，还可以包括业务类型信息，其中，所述业务类型信息指示所述第一数据对应的业务类型。所述适配层根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址，至少可以有如下三种具体实施方式：
第1种：所述适配层根据所述业务类型信息的值确定所述寻址类型为基于地址寻址；
例如，当所述业务类型信息的值大于或者等于第五阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者，当所述业务类型信息的值小于或者等于第六阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者，当所述业务类型信息的值大于或者等于第七阈值门限且小于或者等于第八阈值门限时，所述适配层确定所述寻址类型为基于地址寻址。
第2种：所述适配层根据所述业务类型信息的比特数确定所述寻址类型为基于地址寻址；
例如，当业务类型信息的比特数大于或者等于第五比特数时，适配层确定寻址类型为基于地址寻址；或者，当业务类型信息的比特数小于或者等于第六比特数时，适配层确定寻址类型为基于地址寻址；或者，当业务类型信息的比特数大于或者等于第七比特数，且小于或者等于第八比特数时，适配层确定寻址类型为基于地址寻址。
第3种：所述适配层根据所述业务类型信息中的预设字段确定所述寻址类型为基于地址寻址。
例如，所述预设字段指示所述第一数据的寻址类型为基于地址寻址。又如，所述预设字段指示所述第一数据对应的传输模式为非广播，相应的，当所述适配层确定所述业务类型信息中的所述预设字段指示所述第一数据对应的传输模式为非广播时，所述适配层确定所述寻址类型为基于地址寻址。又如，所述预设字段指示所述第一数据对应的传输模式为单播或组播，相应的，当所述适配层确定所述业务类型信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，所述适配层确定所述寻址类型为基于地址寻址。
为了进一步提高方案的灵活性，一种可能的设计中，在上述方案三中，适配层根据业务类型信息和目的地址信息确定第一数据对应的寻址类型为基于地址寻址的具体实现方式可以是上述方案一和/或方案二中任意实施方式的组合。
例如，当所述目的地址信息的值大于或者等于第一阈值门限，并且所述目的地址信息中的预设字段指示所述第一数据的寻址类型为基于地址寻址时，所述适配层确定所述寻址类型为基于地址寻址。又如，当所述目的地址信息的值大于或者等于第一阈值门限，并且所述业务类型信息的值大于或者等于第五阈值门限时，所述适配层确定所述寻址类型为基于地址寻址。当然，这里只是给出两种示例性的描述，具体实施时还可以有其它组合方式。
示例性地，在上述方案二和方案三中的所述业务类型信息可以为应用标识(application ID，AID)/提供商服务标识(provider service identifier，PSID)。
为了进一步提高方案的灵活性，一种可能的设计中，在上述方案四中，适配层从网络层获取的属性信息除了包括目的地址信息外，还可以包括传输模式指示信息，其中，所述传输模式指示信息指示所述第一数据对应的传输模式。所述适配层确定所述第一数据对应的寻址类型为基于地址寻址，至少可以有如下三种实施方式：
第1种：当传输模式指示信息指示基于地址寻址时，适配层确定第一数据对应的寻址类型为基于地址寻址；
第2种：当传输模式指示信息指示第一数据对应的传输模式为单播或组播时，适配层确定第一数据对应的寻址类型为基于地址寻址；
第3种：当传输模式指示信息指示第一数据对应的传输模式为非广播时，适配层确定第一数据对应的寻址类型为基于地址寻址。
一种可能的设计中，所述适配层可以通过截取所述目的地址信息中的预设字段的方式获得第一接入层地址，其中该预设字段可以是目的地址信息上的任意位置处的字段，本申请实施例不做具体限制。
例如，适配层可以将目的地址信息中的高24比特位上的字段或者低24比特位上的字段作为第一接入层地址。
再例如,适配层可以将目的地址信息中的第一预设字段和第二预设字段拼接作为第一接入层地址。具体拼接方式，本申请实施例不作具体限制。
为了方案的完整性，在一种可能的设计中，所述适配层也可能确定寻址类型不是基于 地址寻址，比如是基于业务类型寻址。那么，适配层可以根据业务类型信息生成第二接入层地址，然后适配层将第一数据、第二接入层地址传递接入层，使得接入层基于第二接入层地址通过直通链路发送第一数据。在这种实施方式下，基于业务类型与第二接入层地址之间的对应关系，接收端设备只能根据第二接入层地址识别第一数据对应的业务类型,不能识别第一数据对应的目的端设备，因此这种方式下只能实现广播通信。
第二方面，本申请实施例提供一种数据发送装置，包括：
适配层模块，用于从网络层获取第一数据以及所述第一数据对应的属性信息，其中，所述属性信息包括目的地址信息；根据所述目的地址信息生成第一接入层地址；将所述第一数据和所述第一接入层地址传递到接入层模块；
接入层模块，用于基于所述第一接入层地址通过直通链路发送所述第一数据。
一种可能的设计中，所述适配层模块还用于：在根据所述目的地址信息生成第一接入层地址之前，确定所述第一数据对应的寻址类型为基于地址寻址。
其中，适配层模块、接入层模块所执行操作的具体实现方式可以分别参照上述第一方面中的适配层、接入层执行对应方法步骤时的具体实现方式，此处不再赘述。
第三方面，本申请实施例提供一种数据发送装置，该装置包括至少一个处理器，以及与所述至少一个处理器通信连接的存储器、通信接口；其中，所述存储器存储有可被所述至少一个处理器执行的指令，所述至少一个处理器通过执行所述存储器存储的指令，执行上述第一方面或第一方面的任意一种可能的实施方式中所述的方法。
第四方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令在被计算机执行时，使所述计算机执行上述第一方面或第一方面的任意一种可能的实施方式中所述的方法。
附图说明
图1为基于直通链路的V2X通信的示意图；
图2为基于蜂窝网络(eNB)中转的V2X通信的示意图；
图3为ITS系统数据传输协议栈架构的示意图；
图4为一种可能的具体的ITS系统数据传输协议栈架构的示意图；
图5为直通链路MAC层数据包的包头结构示意图；
图6A、图6B为本申请实施例中两种应用场景的示意图；
图7为本申请实施例提供的一种业务数据传输方法的流程图；
图8为目的地址信息的一种可能示意图；
图9为本申请实施例提供的一种可能的数据发送装置的结构示意图；
图10为本申请实施例提供的另一种可能的数据发送装置的结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
(1)终端，是指向用户提供语音和/或数据连通性的设备，例如包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端可以经无线接入网(radio  access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该终端可以包括车辆、用户设备(user equipment，UE)、无线终端设备、移动终端设备、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point，AP)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，窄带物联网(narrow band internet of things，NB-IoT)中的专用终端设备，便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。
在本申请实施例中，终端还可以包括V2X设备，例如为车辆中的车载单元(on broad unit，OBU)，且下文中主要以终端是V2X设备为例。
(2)本申请实施例所涉及基站，可用于将收到的空中帧与IP分组进行相互转换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(Internet Protocal，IP)网络设备。该基站还可协调对空中接口的属性管理。例如，基站可以是5G系统中的网络设备，如下一代基站(next generation Node B，gNB)，还可以是全球移动通信系统(global system for mobile Communication，GSM)或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的基站(NodeB)，还可以是LTE中的演进型基站(evolutional Node B，eNB或e-NodeB)，本申请实施例并不限定。
(3)V2X，目前，车辆可以通过V2V、V2I、V2P或者V2N等方式来及时获取路况信息或接收信息，这些通信方式可以统称为V2X通信。以最常见的V2V和V2I为例：车辆通过V2V通信，可以将自身的车速、行驶方向、具体位置、是否踩了紧急刹车等信息广播给周围车辆，周围车辆通过获取该类信息，使得驾驶员可以更好地感知视距外的交通状况，从而对危险状况作出提前预判，进而作出及时避让。而对于V2I通信，除了上述安全信息的交互外，路边基础设施还可以为车辆提供各类服务信息和数据网络的接入等，不停车收费、车内娱乐等功能都极大地提高了交通智能化。一般将V2X通信所使用的网络称为车联网。
(4)PC5接口，是在第三代合作伙伴计划(3rd generation partnership project，3GPP)版本12(Rel-12)的D2D项目中引入的终端设备到终端设备之间的直接通信接口。邻近的终端之间可以在PC5的有效通信范围内通过直连链路进行数据传输，不需要通过中心节点(例如基站)进行转发，也不需要通过传统的蜂窝链路进行信息传输，通信较为快捷便利。V2X设备之间的直通链路通信业也通过PC5接口进行。
(5)本申请实施例中的术语：“系统”和“网络”可被互换使用。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，字符“/”，如无特殊说明，一般表示前后关联对象是一种“或”的关系。“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。“多个”是指两个或两个以上。
本文中描述的技术可用于各种通信系统，例如长期演进(long term evolution，LTE) 系统，第五代移动通信系统(5G)，以及其他此类通信系统。本申请实施例中的技术方案不局限于V2X通信，也可用于其他设备与设备的通信、机器与机器之间的通信、或其他物联网系统中的通信。
为了更好地理解本申请实施例提供的技术方案，下面首先介绍本申请实施例的技术背景。
全球每年发生大量的交通事故，造成大量的人员伤亡和财产损失。发生交通事故的主要原因在于车辆之间缺乏及时可靠地信息交互。车联网系统(vehicle network)旨在通过V2V，V2I、V2P、V2N等通信技术来达到提高道路安全，提高交通运行效率和为用户提供丰富的流媒体服务的目的。
智能交通系统(intelligent transportation system，ITS)对于通信的低时延和高可靠性通信具有严格要求。3GPP标准化的LTE-V2X技术具有时延短、速度快、覆盖广泛、可靠性高等优势，是一种很好的车联网技术。LTE-V2X支持车与车之间、车与行人之间、车与基础设施之间以及车与网络之间进行双向通信。下面，主要以V2V通信为例进行说明。
目前LTE-V2X通信支持两种通信方式，包括如图1所示的基于直通链路的V2X通信和如图2所示的基于蜂窝网络(eNB)中转的V2X通信。其中，图1的终端是以车辆为例进行，在实际应用中，还可以是其它类型的终端，如移动电话、计算机等，本申请实施例不做具体限制。
基于直通链路的V2X通信是指发送数据的终端与接收数据的终端之间通过直通链路实现直接通信，其中终端实现直接通信的链路称为直通链路(sidelink，SL)又称为侧行链路；基于蜂窝网络中转的V2V通信是指终端与终端之间通过基站中转实现通信，即发送数据的终端发送的数据需要通过基站转发给接收数据的终端。具体的UE通过与基站之间的上行链路将数据发送给基站，基站再通过与其他UE之间的下链路将数据发送给其他UE。
进一步的，基于直通链路的V2X通信又分为基站调度模式(mode3)和自主资源选择调度(mode 4)两种通信模式。
其中，在基站调度模式下，终端接入LTE网络，由基站负责为车车直接通信的直通链路传输分配资源，终端利用基站为其调度的资源进行直通链路通信。在终端自主资源选择调度下，基站通过无线资源控制(radio resource control，RRC)信令(包括专用RRC信令或者系统信息块(system information block，SIB)消息)为终端配置资源池，终端自主从资源池中获取资源来进行直通链路通信。当终端不在网络覆盖下时，资源池可以是预配置的，此时，终端从预配置的资源池中获取资源来进行直通链路通信。其中，终端自主从资源池中获取资源的方式可以是随机资源选择方式,也可以是基于侦听的资源选择方式,也可以是其它方式，本申请实施例不对此进行限制。
图3为ITS系统数据传输协议栈架构的示意图，如图3所示，协议栈架构至少包括应用层、网络层、适配层和接入层。
接入层是用于提供通信网络节点寻址、通信媒体接入控制、数据传输通信物理连接建立、保持、和维护等功能的层，接入层可以为设备之间的通信提供通信接口，接入层可能包含多种不同的接入技术，如LTE-V2X PC5接口、无线网(wireless fidelity，Wi-Fi)接口等，不同的接入技术可能对应不同的通信接口。
网络层位于接入层之上，用于实现网络拓扑控制、数据路由，以及设备的数据传送和应用的通信服务；
应用层位于网络层之上，用于向用户提供各类应用及服务手段的层；
由于网络层可能存在不同的网络和/或传输协议，接入层也可能存在多种不同的接入技术，因此，适配层用于提供不同的接入技术与不同的网络和/或传输协议之间的传输适配功能。比如，适配层接收上层(适配层之上)传递的数据包，区分该数据包所使用的底层(适配层之下)接入技术(比如LTE-V2X PC5或Wi-Fi)，并将该数据包递交到符合对应接入技术的底层(适配层之下)进行传输；或者，接收来自底层(适配层之下)的数据包，区分该数据包所属的上层(适配层之上)协议类型，并将该数据包递交给对应的上层协议处理。再例如,不同网络和/或传输协议,不同接入层技术可能使用不同的地址信息,适配层根据该数据包对应的目的地址信息生成接入层地址,并将接入层地址递交到接入层。
需要说明的是，适配层是一个逻辑层，其功能可以作为独立的层存在,也包含在“广义网络层”中或“广义接入层”中(例如作为一个子层)。当适配层功能包含在“广义网络层”时,“广义网络层”至少包含本发明中网络层和适配层的功能。同理,当适配层功能包含在“广义接入层”时,“广义接入层”至少包含本发明中接入层和适配层的功能。
示例性地，图4为一种可能的具体的ITS系统数据传输协议栈架构的示意图,其中适配层作为“广义网络层”的一个子层。
当接入层技术为LTE-V2X时，接入层协议栈从上往下包含分组数据汇聚协议(packet date convergence protocol，PDCP)层,无线链路控制协议(radio link control，RLC)层，媒体接入控制协议(medium access control，MAC)层和物理层(physical layer，PHY)。
PDCP层可以用于处理上层(PDCP层之上)的数据，例如，在用户平面，PDCP层接收到来自上层的数据后，可以对数据进行头压缩和加密，然后递交(submit)到RLC层。另外，PDCP层还可以向上层提供按序提交和重复分组检测功能，例如，在控制平面，PDCP层可以为上层提供RRC信令传输服务，并实现RRC信令的加密和一致性保护。MAC层在逻辑信道(logical channels)上提供数据传送业务。逻辑信道通常可以分为两类：控制信道和业务信道。其中控制信道用于传输控制平面信息，而业务信道用于传输用户平面信息。此外，MAC层还可以负责将逻辑信道映射到传输信道。在MAC层之下是PHY层，PHY层主要负责将传输信道映射到物理信道。
示例性的，网络层可以包含开放系统互联模型(open systems interconnection model，OSI)的网络协议和/或传输协议，负责与不同应用的数据交互，提供面向连接的服务和/或数据转发。比如，网络层可以包含专用短消息协议(dedicated short message protocal，DSMP)、基于地理位置的网络协议(GeoNetworking)，车联网环境下的无线接入短消息协议(WAVE short message protocal，WSMP；wireless access in vehicleure enviroments，WAVE)、快速网络和传输层协议(fast network&transport layer protocal，FNTP)等非IP(non-IP)网络协议中的至少一种，和/或IP网络协议。此外，网络层还可以包括用户数据报协议(user datagram protocol，UDP)/传输控制协议(transmission control protocol，TCP)等传输协议。网络层将应用层感兴趣的数据包传输到应用层，并接收来自应用层的数据包。
在一种可能的实现形式中，网络层可以只包含非IP协议中的一种，例如，专用短消息协议(dedicated short message protocal，DSMP)。
网络层可以通过应用标识(application ID，AID)/提供商服务标识(provider service identifier，PSID)用来区分不同的应用层业务。
层与层之间可以通过接口(又称为服务接入点(Service Acess Point,SAP))进行信息传递。 具体的，应用层和网络层之间可通过接口SAP1，以服务原语(service primitive，SP)(简称原语)的形式传递信息，网络层和适配层之间可通过接口SAP2以原语的形式传递信息，适配层和接入层之间可通过接口SAP3以原语的形式传递信息。
一般的，原语存在四种类型，分别是请求(request)，指示(indication)、响应(response)和证实(confirm)。其中请求由上层发往下层，请求下层提供指定的服务，例如数据传送等。指示由下层发往上层，用于通知上层发生了某些事情，例如下层接收到一个远端对等实体发送的数据。响应由上层发往下层，是对下层发送给上层指示的响应。证实由下层发送给上层，表示上层请求的服务已经完成，予以确认。
以图4所示的协议架构为例，以上层请求底层进行数据发送为例，网络层与适配层之间通过SAP2传递的原语(又称服务原语，Service Primitive)可以包括：
ADAPTATION-LAYER.request(
ApplicationIdentifier     //AID或者PSID
ProtocolType      //网络和/或传输协议类型信息
Data      //数据(网络层递交到适配层的数据)
Peer address      //目的端地址信息
Source address       //发送端地址信息
)
以上层请求底层进行数据发送为例,适配层与接入层通过SAP3传输的原语可以包括：
ACCESS-LAYER.request(
Source_address       //接入层源地址信息
Destination_address       //接入层目的地址信息
Data      //数据(适配层递交到接入层的数据)
PDCP SDU type,       //接入层数据类型信息
)
一般原语中包含一个或者多个原语参数。例如，上面的原语中包含的ApplicationIdentifier、NetworkProtocolType、Data等都是原语参数。
需要说明的是,数据与其他原语参数信息存在一定的对应关系。例如,目的端地址信息指示该数据发送的目的端地址,网络和/或传输协议类型信息指示该数据对应的网络和/或传输协议,例如IP,Non-IP。可选的，对于Non-IP数据，目的端地址信息也可以指示该数据对应的是哪种Non-ip协议,例如WSMP协议、DSMP协议、FNTP协议以及GeoNetworking协议都是典型的Non-IP协议，网络和/或传输协议类型信息可能指示该数据对应DSMP协议。
需要说明的，这种对应关系可以隐式的，也可以是显示的。
目前，基于直通链路的V2X通信仅支持广播通信模式，不支持单播或组播通信模式，主要原因在以下两个方面：
1)当前LTE V2X协议中，在接入层通过MAC层数据包包头中携带的版本号信息来指示通信模式。例如，图5为直通链路MAC层数据包的包头结构示意图，字段(Oct)1中的V表示版本号。但是，当前LTE V2X协议只定义了用“0011”来表示广播传输方式，暂未定义有单播传输方式或组播传输方式的表示方式；
2)请继续参见图5，当前LTE V2X协议中，MAC层数据包的包头包含24bits的源地 址(source_address，SRC)和目的地址(destination_address，DST)，该地址称为接入层地址，又称为层二地址或者MAC地址。其中，DST是根据上层(即接入层之上的层)传递的应用标识(application ID，AID)或提供商服务标识(provider service identifier，PSID)生成的，因而只能用来指示数据对应的业务类型，无法标识出数据对应的目的端设备(在本文中目的端设备又可称为对端设备)，因而无法支持单播或者组播通信。
由此可见，现有技术中基于直通链路的V2X通信存在无法支持单播或组播通信的技术问题。
为了解决现有技术存在的上述问题，本申请实施例提供一种数据发送方法，通过适配层从网络层获取数据以及数据对应的属性信息，其中该属性信息包括目的地址信息；然后适配层根据该目的地址信息生成第一接入层地址；然后，适配层将数据和第一接入层地址传递到接入层，使得接入层基于该第一接入层地址通过直通链路发送该数据。由于第一接入层地址是适配层根据从网络层获取的目的地址信息生成的，所以第一接入层地址可以指示数据对应的目的端设备，进而能够有效支持基于直通链路的V2X通信实现单播或组播通信。
在介绍本申请实施例提供的技术方案之前，首先介绍一下本申请实施例的应用场景。
请参考图6A，可以为本申请实施例的一种应用场景。图6A中包括第一设备、第二设备和基站。其中，第一设备和第二设备基于直通链路，例如第一设备通过直通链路将数据发送给第二设备。
在具体实施时，第一设备对应的目的端设备除了第二设备外，还可以有其他设备，本申请实施例不做具体限制。例如，图6B，可以为本申请实施例的另一种应用场景，第一设备可以同时和多个设备(如第二设备和第三设备)基于直通链路通信。当然，图6B中的第二设备、第三设备仅仅是一种示例，在具体实施时，还可以有更多的设备与第一设备基于直通链路通信，本申请实施例对设备的数量不做具体限制。
其中，图6A、图6B中的终端都是以车辆为例。
接下来结合附图介绍本申请实施例提供的技术方案。
本申请一实施例提供一种业务数据传输方法，该方法可由图6A、图6B中的第一设备执行。请参考图7，为该方法的流程图。
S71、第一设备的适配层从第一设备的网络层获取第一数据以及第一数据对应的属性信息；
具体的，适配层可以通过适配层和网络层之间的接口SAP2原语从网络层获取第一数据以及第一数据对应的属性信息。
其中，所述属性信息至少包括目的地址信息。目的地址信息可以指示一个目的端设备，也可以指示多个目的端设备，本申请实施例不做具体限制。例如，图6A所示的应用场景中，目的地址信息可以为一个单播地址，例如第二设备的地址，则第一设备对应的目的端设备可以只有第二设备。又如，图6B所示的应用场景中，目的地址信息可以为一个组播地址，则此时目的地址信息可以对应多个目的端设备，例如第二设备和第三设备。
在具体实施时，所述属性信息除了包括目的地址信息外，还可以有其他信息，比如第一数据对应的源地址信息、网络和/或传输协议类型信息(用于指示网络和/或传输协议，例如IP，WSMP，FNTP、DSMP等)、AID以及PSID等，本申请实施例不做具体限制。其中第一数据与属性信息的对应关系可以是隐式的，也可以是显式的，本申请实施例不做 具体限制。
在具体实施时，目的地址信息和源地址信息可以分别通过两个不同的原语指示，也可以通过一个原语指示，本申请实施例不做具体限制。当目的地址信息和源地址信息通过一个原语指示时，需要对该原语进行解析才能获得该目的地址信息。比如，目的地址信息和源地址信息拼接形成一个原语，适配层通过解析该原语的低位字段获取目的地址信息。本申请实施例不限制适配层解析目的地址信息的具体方法和规则。
S72、适配层根据目的地址信息生成第一接入层地址；
在一种可能的设计中，适配层可以通过截取目的地址中的预设字段的方式获得第一接入层地址，其中该预设字段可以是目的地址信息上的任意位置处的字段，本申请实施例不做具体限制。
例如，适配层可以将目的地址信息中的高24比特位上的字段或者低24比特位上的字段作为第一接入层地址。
再例如，适配层可以将目的地址信息中的第一预设字段和第二预设字段拼接作为第一接入层地址。具体拼接方式，本申请实施例不作限制。
在一种可能的设计中，适配层还可以是在确定第一数据对应的寻址类型为基于地址寻址时，根据目的地址信息生成第一接入层地址。
在本申请实施例中，适配层确定第一数据对应的寻址类型为基于地址寻址的具体方案包括但不限于如下四种方案：
方案一、适配层根据目的地址信息确定寻址类型为基于地址寻址。
具体的，适配层根据目的地址信息确定寻址类型为基于地址寻址的具体实现方式进一步可包括如下三种：
第1种：目的地址信息可以有多个比特位，适配层根据目的地址信息的值确定寻址类型为基于地址寻址。
具体的，适配层可以是在确定目的地址信息的值处于预定的数值区间时，确定寻址类型为基于地址寻址。
例如，当目的地址信息的值大于或者等于第一阈值门限时，适配层确定寻址类型为基于地址寻址；或者，当目的地址信息的值小于或者等于第二阈值门限时，适配层确定寻址类型为基于地址寻址；或者，当目的地址信息的值大于或者等于第三阈值门限且小于或者等于第四阈值门限时，适配层确定寻址类型为基于地址寻址。当然，以上仅仅是数值区间一些可能的形式的示例，在具体实施例时，数值区间还可以有其他表现形式，本申请实施例不做具体限制。
举一个具体的例子进行说明：假定第一阈值门限为2^10，则当目的地址信息大于或者等于2^10时，适配层确定第一数据对应的寻址类型为基于地址寻址。
在具体实施时，上述这些阈值门限可以是预配置在第一设备上的(比如预配置在第一设备的SIM卡上的)，也可以是基站通过RRC信令传输给第一设备的，本申请实施例不做具体限制。其中,专用RRC信令和SIB消息都称为RRC信令。
第2种：目的地址信息可以有多个比特位，适配层可以根据目的地址信息的比特数确定寻址类型为基于地址寻址。
具体的，适配层可以是在确定目的地址信息的比特数处于预定的比特数区间时，确定寻址类型为基于地址寻址。
例如，当目的地址信息的比特数大于或者等于第一比特数时，适配层确定寻址类型为基于地址寻址；或者，当目的地址信息的比特数小于或者等于第二比特数时，适配层确定寻址类型为基于地址寻址；或者，当目的地址信息的比特数大于或者等于第三比特数且小于或者等于第四比特数时，适配层确定寻址类型为基于地址寻址。当然，以上仅仅是比特数区间一些可能的形式的示例，在具体实施例时，比特数区间还可以有其他表现形式，本申请实施例不做具体限制。
举一个具体的例子进行说明：假定第二比特数为48bit，则当目的地址信息的比特数小于或者等于48bit时，适配层确定寻址类型为基于地址寻址。
在具体实施时，上述这些预设的比特数可以是预配置在第一设备上的(比如但是不限于预配置在第一设备的SIM卡上的)，也可以是基站通过RRC信令传输给第一设备的，本申请实施例不做具体限制。其中,专用RRC信令和SIB消息都称为RRC信令。
第3种：目的地址信息可以有多个比特位，目的地址信息上不同的比特位可以有不同的含义，适配层可以根据目的地址信息中的预设字段确定寻址类型为基于地址寻址。
比如，图8为目的地址信息的一种可能示意图，如图8所示，目的地址信息总共有64bits，其中前面24bits可以用于标识目的端设备对应的公司标识(company_id；identification，ID)，后面40bits为扩展位标识(extension identifier)，二者共同决定目的设备的地址。
适配层根据目的地址信息中的预设字段确定寻址类型为基于地址寻址的具体实施方式进一步可包括如下三种：
(1)目的地址信息上的预设字段指示第一数据对应的传输模式为单播或组播。相应的，当适配层确定目的地址信息中的预设字段指示第一数据对应的传输模式为单播或组播时，适配层确定寻址类型为基于地址寻址；
例如，目的地址信息中的第一预设字段包含2bits，其中00表示单播，01表示组播，10表示广播。则当适配层解析第一预设字段为00时，适配层确定第一数据对应的寻址类型为基于地址寻址。其中，第一预设字段的具体位置和不同取值所表示的含义可以通过协议规定。
(2)预设字段指示第一数据的寻址类型为基于地址寻址。
例如，目的地址信息中的第二预设字段包含1bits，其中0表示基于地址寻址，1表示基于业务类型寻址。则当适配层解析第二预设字段为0时，适配层确定第一数据对应的寻址类型为基于地址寻址。其中，第二预设字段的具体位置和不同取值所表示的含义可以通过协议规定。
(3)目的地址信息上的预设字段指示第一数据对应的传输模式为非广播。
相应的，当适配层确定目的地址信息中的预设字段指示第一数据对应的传输模式为非广播时，适配层确定寻址类型为基于地址寻址。
例如，目的地址信息中的第三预设字段包含1bits，其中0表示广播，1表示非广播。则当适配层解析第三预设字段为1时，适配层确定第一数据对应的寻址类型为基于地址寻址。其中，第三预设字段的具体位置和不同取值所表示的含义可以通过协议规定。
方案二、适配层根据业务类型信息确定寻址类型为基于地址寻址。
在本实施方式下，上述步骤S71中适配层从网络层获取的属性信息除了包括目的地址信息外，还可以包括业务类型信息，业务类型信息用于指示第一数据对应的业务类型，例如碰撞预警类业务，编队行驶业务等。示例性地，在本申请实施例中，业务类型信息具体 可以为上文中的应用标识AID或提供商服务标识PSID。
与方案一类似，业务类型信息也可以有多个比特位，适配层根据业务类型信息确定寻址类型为基于地址寻址的具体实施方式可进一步可包括如下三种：
第1种：适配层根据业务类型信息的值确定寻址类型为基于地址寻址。
具体的，适配层可以是在确定业务类型信息的值处于预定的数值区间时，确定寻址类型为基于地址寻址。
例如，当业务类型信息的值大于或者等于第五阈值门限时，适配层确定寻址类型为基于地址寻址；或者，当业务类型信息的值小于或者等于第六阈值门限时，适配层确定寻址类型为基于地址寻址；或者，当业务类型信息的值大于或者等于第七阈值门限且小于或者等于第八阈值门限时，适配层确定寻址类型为基于地址寻址。当然，以上仅仅是数值区间一些可能的形式的示例，在具体实施例时，数值区间还可以有其他表现形式，本申请实施例不做具体限制。
举一个具体的例子进行说明：假定第七阈值门限为2^10，第八阈值门限为2^12则当业务类型信息大于2^10且小于2^12时，适配层确定第一数据对应的寻址类型为基于地址寻址。
类似的，在具体实施时，上述这些阈值门限可以是预配置在第五设备上的(比如但是不限于预配置在第五设备的SIM卡上的)，也可以是基站通过RRC信令传输给第五设备的，本申请实施例不做具体限制。
第2种：适配层可以根据业务类型信息的比特数确定寻址类型为基于地址寻址。
具体的，适配层可以是在确定业务类型信息的比特数处于预定的比特数区间时，确定寻址类型为基于地址寻址。
例如，当业务类型信息的比特数大于第五比特数时，适配层确定寻址类型为基于地址寻址；或者，当业务类型信息的比特数小于第六比特数时，适配层确定寻址类型为基于地址寻址；或者，当业务类型信息的比特数大于或者等于第七比特数，且小于或者等于第八比特数时，适配层确定寻址类型为基于地址寻址。当然，以上仅仅是比特数区间一些可能的形式的示例，在具体实施例时，比特数区间还可以有其他表现形式，本申请实施例不做具体限制。
举一个具体的例子进行说明：假定第五比特数为48bit，则当业务类型信息的比特数大于48bit时，适配层确定寻址类型为基于地址寻址。
类似的，在具体实施时，上述这些预设的比特数可以是预配置在第一设备上的(比如但是不限于预配置在第一设备的SIM卡上的)，也可以是基站通过RRC信令传输给第一设备的，本申请实施例不做具体限制。
第3种：业务类型信息上不同的比特位可以有不同的含义，适配层可以根据业务类型信息中的预设字段确定寻址类型为基于地址寻址。
类似的，适配层根据业务类型信息中的预设字段确定寻址类型为基于地址寻址的具体实施方式进一步可包括如下三种：
(1)业务类型信息上的预设字段指示第一数据对应的传输模式为单播或组播。相应的，当适配层确定业务类型信息中的预设字段指示第一数据对应的传输模式为单播或组播时，适配层确定寻址类型为基于地址寻址；
例如，业务类型信息中的第四预设字段包含2bits，其中00表示单播，01表示组播， 10表示广播。则当适配层解析第四预设字段为00时，适配层确定第一数据对应的寻址类型为基于地址寻址。其中，第四预设字段的具体位置和不同取值所表示的含义可以通过协议规定。
(2)业务类型信息上的预设字段指示第一数据的寻址类型为基于地址寻址。
例如，业务类型信息中的第五预设字段包含1bits，其中1表示基于地址寻址，0表示基于业务类型寻址。则当适配层解析第五预设字段为1时，适配层确定第一数据对应的寻址类型为基于地址寻址。其中，第五预设字段的具体位置和不同取值所表示的含义可以通过协议规定。
(3)业务类型信息上的预设字段指示第一数据对应的传输模式为非广播。
相应的，当适配层确定业务类型信息中的预设字段指示第一数据对应的传输模式为费广播时，适配层确定寻址类型为基于地址寻址；
例如，业务类型信息中的第六预设字段包含1bits，其中0表示广播，1表示非广播。则当适配层解析第六预设字段为1时，适配层确定第一数据对应的寻址类型为基于地址寻址。其中，第六预设字段的具体位置和不同取值所表示的含义可以通过协议规定。
方案三、适配层根据业务类型信息和目的地址信息确定第一数据对应的寻址类型为基于地址寻址。
在本实施方式下，上述步骤S71中适配层从网络层获取的属性信息除了包括目的地址信息外，还可以包括业务类型信息。本实施方式中业务类型信息的具体实现方式可以参照上述方式二中业务类型信息的具体实现方式，此处不再赘述。
适配层根据业务类型信息和目的地址信息确定第一数据对应的寻址类型为基于地址寻址的具体实现方式可以是上述方案一和/或方案二中任意实施方式的组合。
例如，目的地址信息中包含第七预设字段，第七预设字段具体包含两个bits，其中01表示单播，00表示组播，11表示广播。第一设备上还配置有阈值门限2^24。当适配层解析第七预设字段为00，且目的地址信息的值大于等于2^24时，适配层确定第一数据对应的寻址类型为基于地址寻址。
例如，业务类型信息中包含第八预设字段，第八预设字段具体包含一个bits，其中0表示基于地址寻址，1表示基于业务类型寻址。第一设备上还配置有阈值门限2^64。当适配层解析第八预设字段为0，且业务类型信息的值小于或者等于阈值门限2^64时，适配层确定第一数据对应的寻址类型为基于地址寻址。
例如，业务类型信息中包含第九预设字段，第九预设字段具体包含两个bits，其中01表示单播，00表示组播，11表示广播。第一设备上还配置有阈值门限2^24和2^64。当适配层解析第九预设字段为00，且目的地址信息的值大于2^24且小于2^64时，适配层确定第一数据对应的寻址类型为基于地址寻址。
当然，上述三种组合方式仅仅是一种示例，在具体实施时的具体组合方式不限于以上三种，本申请实施例不一一赘述。
方案四、适配层根据传输模式指示信息确定第一数据对应的寻址类型为基于地址寻址。
在本实施方式下，上述步骤S71中适配层从网络层获取的属性信息除了包括目的地址信息外，还可以包括传输模式指示信息。
具体的，当传输模式指示信息指示基于地址寻址时，适配层确定第一数据对应的寻址类型为基于地址寻址；或者，当传输模式指示信息指示第一数据对应的传输模式为单播或 组播时，适配层确定第一数据对应的寻址类型为基于地址寻址；或者，当传输模式指示信息指示第一数据对应的传输模式为非广播时，适配层确定第一数据对应的寻址类型为基于地址寻址。
其中，传输模式指示信息可以是SAP2上新增加的一种原语参数，专门用来指示第一数据对应的寻址类型或者传输模式。
S73、适配层将第一数据和第一接入层地址传递到第一设备的接入层；
具体的，适配层可以通过适配层和接入层之间的接口SAP3原语将第一数据和第一接入层地址传递到第一设备的接入层。
需要说明的是，适配层传递第一数据给接入层时，可能是以数据包的形式传递，数据包中包含第一数据。一般来说，第一数据在经过不同协议层的时候，每个协议层都会添加该协议层的包头信息。
S74、接入层基于第一接入层地址通过直通链路发送第一数据。
具体的，接入层在携带第一数据的MAC层数据包的包头中添加第一接入层地址，这样，第一设备在将包头信息包含有第一接入层地址的数据包发送出去后，目的端设备就可以根据该数据包中的包头信息确定该数据包中的第一数据是否是发给自身的数据，并在确定自身的地址和数据包中的第一接入层地址匹配时接收该数据包中的第一数据。进而，当上述目的地址信息指示单个目的端设备的地址时，就实现了单播通信，当上述目的地址信息同时指示了多个目的端设备的地址时，就实现了组播通信。
通过上述描述可知，本申请实施例中的第一设备的适配层从网络层获取第一数据以及第一数据对应的属性信息，其中该属性信息包括目的地址信息；然后适配层根据该目的地址信息生成第一接入层地址；接着，适配层将第一数据和第一接入层地址传递到接入层，使得接入层基于第一接入层地址通过直通链路发送第一数据。由于第一接入层地址是适配层根据目的地址信息生成的，所以第一接入层地址可以表示第一数据对应的目的端设备，这样使得目的端设备在接收数据时，可以根据该第一接入层地址确定第一数据是否是发给自身的数据，并在确定自身的地址和第一接入层地址匹配时接收该第一数据。进而，当上述目的地址信息指示单个目的端设备的地址时，就实现了单播通信，当上述目的地址信息同时指示了多个目的端设备的地址时，就实现了组播通信。有效地解决了现有技术中基于直通链路的V2X通信无法支持单播或组播通信的技术问题。
为了方案的完整性，在一种可能的设计中，本申请实施例中在执行步骤S71后，也可能确定寻址类型不是基于地址寻址，比如是基于业务类型寻址。
进一步的，当第一数据对应的寻址类型为基于业务类型寻址时，适配层可以根据业务类型信息生成第二接入层地址，然后适配层将第一数据、第二接入层地址传递到第一设备的接入层，使得接入层基于第二接入层地址通过直通链路发送第一数据。
在这种实施方式下，基于业务类型与第二接入层地址之间的对应关系，接收端设备只能根据第二接入层地址识别第一数据对应的业务类型，不能识别第一数据对应的目的端设备，因此这种方式下只能实现广播通信。
基于同一技术构思，本申请实施例还提供一种数据发送装置。图9为该数据发送装置的一种可能的结构示意图。数据发送装置900包括：
适配层模块901，用于从网络层获取第一数据以及所述第一数据对应的属性信息，其中，所述属性信息包括目的地址信息；根据所述目的地址信息生成第一接入层地址；将所 述第一数据和所述第一接入层地址传递到接入层模块404；
接入层模块902，用于基于所述第一接入层地址通过直通链路发送所述第一数据。
一种可能的设计，所述适配层模块901还用于：在根据所述目的地址信息生成第一接入层地址之前，确定所述第一数据对应的寻址类型为基于地址寻址。
其中，所述适配层模块901在确定所述第一数据对应的寻址类型为基于地址寻址时，具体可以是根据所述目的地址信息的值确定所述寻址类型为基于地址寻址；或者是根据所述目的地址信息的比特数确定所述寻址类型为基于地址寻址；又或者是根据所述目的地址信息中的预设字段确定所述寻址类型为基于地址寻址。
示例性地，在本申请实施例中，所述适配层模块901在根据所述目的地址信息的值确定所述寻址类型为基于地址寻址时，具体用于：当所述目的地址信息的值大于或者等于第一阈值门限时，确定所述寻址类型为基于地址寻址；或者，当所述目的地址信息的值小于或者等于第二阈值门限时，确定所述寻址类型为基于地址寻址；或者，当所述目的地址信息的值大于或者等于第三阈值门限且小于或者等于第四阈值门限时，确定所述寻址类型为基于地址寻址。
示例性地，在本申请实施例中，所述预设字段可以指示所述第一数据的寻址类型为基于地址寻址，即当所述预设字段指示所述第一数据的寻址类型为基于地址寻址时，所述适配层模块901确定所述寻址类型为基于地址寻址；或者，所述预设字段可以指示所述第一数据对应的传输模式为非广播，相应的，当所述目的地址信息中的所述预设字段指示所述第一数据对应的传输模式为非广播时，所述适配层模块901确定所述寻址类型为基于地址寻址；或者，所述预设字段指示所述第一数据对应的传输模式为单播或组播，相应的，当所述目的地址信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，确定所述寻址类型为基于地址寻址。
一种可替换的设计中，所述适配层模块901可以根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址。相应的，所述属性信息还可以包括所述第一数据对应的业务类型信息，其中，所述业务类型信息指示所述第一数据对应的业务类型。
其中，所述适配层模块901在根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址时，具体可以是根据所述业务类型信息的值确定所述寻址类型为基于地址寻址；或者是根据所述业务类型信息的比特数确定所述寻址类型为基于地址寻址；又或者是根据所述业务类型信息中的预设字段确定所述寻址类型为基于地址寻址。
示例性地，在本申请实施例中，所述适配层模块901在根据所述业务类型信息的值确定所述寻址类型为基于地址寻址时，具体用于：当所述业务类型信息的值大于或者等于第五阈值门限时，确定所述寻址类型为基于地址寻址；或者，当所述业务类型信息的值小于或者等于第六阈值门限时，确定所述寻址类型为基于地址寻址；或者，当所述业务类型信息的值大于或者等于第七阈值门限且小于或者等于第八阈值门限时，确定所述寻址类型为基于地址寻址。
示例性地，在本申请实施例中，所述预设字段可以指示所述第一数据的寻址类型为基于地址寻址，即当所述预设字段指示所述第一数据的寻址类型为基于地址寻址时，所述适配层模块901确定所述寻址类型为基于地址寻址；或者，所述预设字段指示所述第一数据对应的传输模式为非广播，相应的，当所述业务类型信息中的所述预设字段指示所述第一数据对应的传输模式为非广播时，确定所述寻址类型为基于地址寻址；或者，所述预设字 段指示所述第一数据对应的传输模式为单播或组播，相应的，当所述业务类型信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，确定所述寻址类型为基于地址寻址。
一种可能的设计中，上述业务类型信息可以为AID或PSID。
又一种可替换的设计中，所述适配层模块901在确定所述第一数据对应的寻址类型为基于地址寻址时，可以是根据所述传输模式指示信息确定所述第一数据对应的寻址类型为基于地址寻址。相应的，所述属性信息还可以包括所述第一数据对应的传输模式指示信息，其中，所述传输模式指示信息指示所述第一数据对应的传输模式。
示例性地，当所述传输模式指示信息指示所述第一数据对应的传输模式为单播或组播时，所述适配层模块901确定所述寻址类型为基于地址寻址。
示例性地，当传输模式指示信息指示所述第一数据对应的传输模式为非广播时，所述适配层模块901确定所述寻址类型为基于地址寻址。
一种可能的设计中，所述适配层模块901具体用于：将所述目的地址信息中的高24比特位上的字段或者低24比特位上的字段作为所述第一接入层地址。
本申请所述方法和装置基于同一技术构思，由于方法及装置解决问题的原理相似，以上各个模块所执行操作的具体实现方式可以参照本申请实施例上述数据传输方法中对应的步骤，因此装置与方法的实施可以相互参见，重复之处不再赘述。
基于同一技术构思，本申请实施例还提供一种数据发送装置1000。请参见图10，该装置1000包括至少一个处理器1001，以及与所述至少一个处理器1001通信连接的存储器1002、通信接口1003；其中，所述存储器1002存储有可被所述至少一个处理器1001执行的指令，所述至少一个处理器1001通过执行所述存储器1002存储的指令，利用所述通信接口1003执行本申请实施例所述的数据传输方法。
作为一种可选的实施方式，在本申请实施例中，处理器1001具体可以包括中央处理器(central processing unit，CPU)、特定应用集成电路(application specific integrated circuit，ASIC)，可以是一个或多个用于控制程序执行的集成电路，可以是使用现场可编程门阵列(field programmable gate array，FPGA)开发的硬件电路，可以是基带处理器。
作为一种可选的实施方式，在本申请实施例中，处理器1001可以包括至少一个处理核心。
作为一种可选的实施方式，在本申请实施例中，存储器1002可以包括只读存储器(read only memory，ROM)、随机存取存储器(random access memory，RAM)和磁盘存储器。存储器1002用于存储处理器1001运行时所需的数据。
本申请所述方法和装置基于同一技术构思，由于方法及装置解决问题的原理相似，以上至少一个处理器1001所执行操作的具体实现方式可以参照本申请实施例上述数据传输方法中对应的步骤，因此装置与方法的实施可以相互参见，重复之处不再赘述。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令在被计算机执行时，使所述计算机执行本申请实施例所述的数据传输方法。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些 计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字通用光盘(digital versatile disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (28)

  1. 一种数据发送方法，其特征在于，包括：
    适配层从网络层获取第一数据以及所述第一数据对应的属性信息，其中，所述属性信息包括目的地址信息；
    所述适配层根据所述目的地址信息生成第一接入层地址；
    所述适配层将所述第一数据和所述第一接入层地址传递到接入层；
    所述接入层基于所述第一接入层地址通过直通链路发送所述第一数据。
  2. 如权利要求1所述的方法，其特征在于，所述适配层根据所述目的地址信息生成第一接入层地址之前，还包括：
    所述适配层确定所述第一数据对应的寻址类型为基于地址寻址。
  3. 如权利要求2所述的方法，其特征在于，所述适配层确定所述第一数据对应的寻址类型为基于地址寻址，包括：
    所述适配层根据所述目的地址信息的值确定所述寻址类型为基于地址寻址；或者
    所述适配层根据所述目的地址信息中的预设字段确定所述寻址类型为基于地址寻址。
  4. 如权利要求3所述的方法，其特征在于，所述适配层根据所述目的地址信息的值确定所述寻址类型为基于地址寻址，包括：
    当所述目的地址信息的值大于或者等于第一阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者
    当所述目的地址信息的值小于或者等于第二阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者
    当所述目的地址信息的值大于或者等于第三阈值门限且小于或者等于第四阈值门限时，所述适配层确定所述寻址类型为基于地址寻址。
  5. 如权利要求3所述的方法，其特征在于，
    所述预设字段指示所述第一数据的寻址类型为基于地址寻址；或者
    所述预设字段指示所述第一数据对应的传输模式为单播或组播，其中，所述适配层根据所述目的地址信息中的预设字段确定所述寻址类型为基于地址寻址，包括：当所述适配层确定所述目的地址信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，所述适配层确定所述寻址类型为基于地址寻址。
  6. 如权利要求2所述的方法，其特征在于，所述属性信息还包括所述第一数据对应的业务类型信息，其中，所述业务类型信息指示所述第一数据对应的业务类型；
    所述适配层确定所述第一数据对应的寻址类型为基于地址寻址，包括：
    所述适配层根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址。
  7. 如权利要求6所述的方法，其特征在于，所述适配层根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址，包括：
    所述适配层根据所述业务类型信息的值确定所述寻址类型为基于地址寻址；或者
    所述适配层根据所述业务类型信息中的预设字段确定所述寻址类型为基于地址寻址。
  8. 如权利要求7所述的方法，其特征在于，所述适配层根据所述业务类型信息的值确定所述寻址类型为基于地址寻址，包括：
    当所述业务类型信息的值大于或者等于第五阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者
    当所述业务类型信息的值小于或者等于第六阈值门限时，所述适配层确定所述寻址类型为基于地址寻址；或者
    当所述业务类型信息的值大于或者等于第七阈值门限且小于或者等于第八阈值门限时，所述适配层确定所述寻址类型为基于地址寻址。
  9. 如权利要求7所述的方法，其特征在于，
    所述预设字段指示所述第一数据的寻址类型为基于地址寻址；或者
    所述预设字段指示所述第一数据对应的传输模式为单播或组播，其中，所述适配层根据所述业务类型信息中的预设字段确定所述寻址类型为基于地址寻址，包括：当所述适配层确定所述业务类型信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，所述适配层确定所述寻址类型为基于地址寻址。
  10. 如权利要求6-9任一项所述的方法，其特征在于，所述业务类型信息为应用标识AID或提供商服务标识PSID。
  11. 如权利要求2所述的方法，其特征在于，所述属性信息还包括所述第一数据对应的传输模式指示信息，其中，所述传输模式指示信息指示所述第一数据对应的传输模式；
    所述适配层确定所述第一数据对应的寻址类型为基于地址寻址，包括：
    所述适配层根据所述传输模式指示信息确定所述第一数据对应的寻址类型为基于地址寻址。
  12. 如权利要求11所述的方法，其特征在于，所述适配层根据所述传输模式指示信息确定所述第一数据对应的寻址类型为基于地址寻址，包括：
    当所述传输模式指示信息指示所述第一数据对应的传输模式为单播或组播时，所述适配层确定所述寻址类型为基于地址寻址。
  13. 如权利要求1～12中任一项所述的方法，其特征在于，所述适配层根据所述目的地址信息生成第一接入层地址，包括：
    所述适配层将所述目的地址信息中的高24比特位上的字段或者低24比特位上的字段作为所述第一接入层地址。
  14. 一种数据发送装置，其特征在于，包括：
    适配层模块，用于从网络层获取第一数据以及所述第一数据对应的属性信息，其中，所述属性信息包括目的地址信息；根据所述目的地址信息生成第一接入层地址；将所述第一数据和所述第一接入层地址传递到接入层模块；
    接入层模块，用于基于所述第一接入层地址通过直通链路发送所述第一数据。
  15. 如权利要求14所述的装置，其特征在于，所述适配层模块还用于：
    在根据所述目的地址信息生成第一接入层地址之前，确定所述第一数据对应的寻址类型为基于地址寻址。
  16. 如权利要求15所述的装置，其特征在于，所述适配层模块在确定所述第一数据对应的寻址类型为基于地址寻址时，具体用于：
    根据所述目的地址信息的值确定所述寻址类型为基于地址寻址；或者
    根据所述目的地址信息中的预设字段确定所述寻址类型为基于地址寻址。
  17. 如权利要求16所述的装置，其特征在于，所述适配层模块在根据所述目的地址 信息的值确定所述寻址类型为基于地址寻址时，具体用于：
    当所述目的地址信息的值大于或者等于第一阈值门限时，确定所述寻址类型为基于地址寻址；或者
    当所述目的地址信息的值小于或者等于第二阈值门限时，确定所述寻址类型为基于地址寻址；或者
    当所述目的地址信息的值大于或者等于第三阈值门限且小于或者等于第四阈值门限时，确定所述寻址类型为基于地址寻址。
  18. 如权利要求16所述的装置，其特征在于，
    所述预设字段指示所述第一数据的寻址类型为基于地址寻址；或者
    所述预设字段指示所述第一数据对应的传输模式为单播或组播，其中，所述适配层模块在根据所述目的地址信息中的预设字段确定所述寻址类型为基于地址寻址时，具体用于：当所述目的地址信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，确定所述寻址类型为基于地址寻址。
  19. 如权利要求15所述的装置，其特征在于，所述属性信息还包括所述第一数据对应的业务类型信息，其中，所述业务类型信息指示所述第一数据对应的业务类型；
    所述适配层模块在确定所述第一数据对应的寻址类型为基于地址寻址时，具体用于：
    根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址。
  20. 如权利要求19所述的装置，其特征在于，所述适配层模块在根据所述业务类型信息确定所述第一数据对应的寻址类型为基于地址寻址时，具体用于：
    根据所述业务类型信息的值确定所述寻址类型为基于地址寻址；或者
    根据所述业务类型信息中的预设字段确定所述寻址类型为基于地址寻址。
  21. 如权利要求20所述的装置，其特征在于，所述适配层模块在根据所述业务类型信息的值确定所述寻址类型为基于地址寻址时，具体用于：
    当所述业务类型信息的值大于或者等于第五阈值门限时，确定所述寻址类型为基于地址寻址；或者
    当所述业务类型信息的值小于或者等于第六阈值门限时，确定所述寻址类型为基于地址寻址；或者
    当所述业务类型信息的值大于或者等于第七阈值门限且小于或者等于第八阈值门限时，确定所述寻址类型为基于地址寻址。
  22. 如权利要求20所述的装置，其特征在于，
    所述预设字段指示所述第一数据的寻址类型为基于地址寻址；或者
    所述预设字段指示所述第一数据对应的传输模式为单播或组播，其中，所述适配层模块在根据所述业务类型信息中的预设字段确定所述寻址类型为基于地址寻址时，具体用于：当所述业务类型信息中的所述预设字段指示所述第一数据对应的传输模式为单播或组播时，确定所述寻址类型为基于地址寻址。
  23. 如权利要求19-22任一项所述的装置，其特征在于，所述业务类型信息为AID或PSID。
  24. 如权利要求15所述的装置，其特征在于，所述属性信息还包括所述第一数据对应的传输模式指示信息，其中，所述传输模式指示信息指示所述第一数据对应的传输模式；
    所述适配层模块在确定所述第一数据对应的寻址类型为基于地址寻址时，具体用于：
    根据所述传输模式指示信息确定所述第一数据对应的寻址类型为基于地址寻址。
  25. 如权利要求24所述的装置，其特征在于，所述适配层模块在根据所述传输模式指示信息确定所述第一数据对应的寻址类型为基于地址寻址时，具体用于：
    当所述传输模式指示信息指示所述第一数据对应的传输模式为单播或组播时，确定所述寻址类型为基于地址寻址。
  26. 如权利要求14～25中任一项所述的装置，其特征在于，所述适配层模块具体用于：
    将所述目的地址信息中的高24比特位上的字段或者低24比特位上的字段作为所述第一接入层地址。
  27. 一种数据发送装置，其特征在于，包括：
    至少一个处理器；以及
    与所述至少一个处理器通信连接的存储器、通信接口；
    其中，所述存储器存储有可被所述至少一个处理器执行的指令，所述至少一个处理器通过执行所述存储器存储的指令，执行如权利要求1-13任一项所述的方法。
  28. 一种计算机可读存储介质，其特征在于，
    所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令在被计算机执行时，使所述计算机执行如权利要求1-13任一项所述的方法。
PCT/CN2020/076228 2019-04-08 2020-02-21 一种数据发送方法、装置及计算机可读存储介质 WO2020207126A1 (zh)

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