Technical field
[0001]
This application relates to the field of communications, and in particular to a method, device and communication system for sending data in a vehicle communication (V2X) service.
Background technique
[0002]
Automobile communication business is expressed as V2X business. V2X services can include multiple types, such as: Vehicle-to-Vehicle (V2V) communication services, Vehicle-to-Infrastructure (V2I) communication services, and Vehicle-to-Pedestrian (Vehicle-to-Pedestrian) communication services. , V2P) communication services, etc.
[0003]
The V2X service can be provided through the PC5 interface and/or Uu interface. The V2X service transmitted through the PC5 interface can be provided by V2X sidelink communication. V2X sidelink communication is a communication mode in which terminal devices can directly communicate with each other through the PC5 interface.
[0004]
It should be noted that the above introduction to the technical background is only for the convenience of a clear and complete description of the technical solutions of the present application, and to facilitate the understanding of those skilled in the art. It should not be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of this application.
[0005]
Summary of the invention
[0006]
The inventor of this application found that: in the long-term evolution (LTE), the data transmission mode of V2X sidelink communication is mainly broadcast in the physical layer (PHY); in the new radio (NR, New Radio) technology, V2X is for Supports more usage scenarios, and may adopt unicast or groupcast transmission methods in the physical layer; in the prior art, although the physical (PHY) layer of the terminal device may be notified of which Data is sent in a sending mode, but there is still a lack of in-depth research in the prior art on how other layers of the terminal device need to work so that the physical layer can send data in a corresponding sending mode.
[0007]
The embodiments of the present application provide a data transmission method, device, and communication system. The media access layer of the terminal device generates at least the same transmission mode as the service data unit (SDU) contained in a protocol data unit (PDU). A PDU, therefore, the PDU can correspond to the transmission mode, so it is convenient for the physical layer to send data in the corresponding transmission mode after receiving the PDU (that is, the transmission block).
[0008]
According to a first aspect of the embodiments of the present application, there is provided a communication device, which is provided in a terminal device, and the communication device includes: a first obtaining unit configured to obtain or select a vehicle communication (V2X) service and communication resource parameter-based A communication resource determined by the mapping relationship; and a communication unit that uses the communication resource to send the target V2X service.
[0009]
According to a second aspect of the embodiments of the present application, a communication device is provided, which is provided in a network device. The communication device includes: a second obtaining unit that obtains or determines the mapping relationship between the vehicle communication (V2X) service and the communication resource parameter.
[0010]
According to a third aspect of the embodiments of the present application, a communication system is provided. The communication system includes a terminal device and a network device. The terminal device includes the communication device described in the first aspect of the above-mentioned embodiment, and the network device includes: The communication device described in the second aspect of the above embodiment.
[0011]
The beneficial effect of the embodiments of the present application is that the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU), and thus, the PDU It can correspond to the sending mode, so it is convenient for the physical layer to send data in the corresponding sending mode.
[0012]
With reference to the following description and drawings, specific implementations of the present application are disclosed in detail, and the ways in which the principles of the present application can be adopted are indicated. It should be understood that the scope of the embodiments of the present application is not limited thereby. Within the scope of the terms of the appended claims, the implementation of the present application includes many changes, modifications and equivalents.
[0013]
Features described and/or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or substituted for features in other embodiments .
[0014]
It should be emphasized that the term "comprising/comprising" when used herein refers to the existence of a feature, a whole, a step or a component, but does not exclude the existence or addition of one or more other features, a whole, a step or a component.
Description of the drawings
[0015]
The elements and features described in one drawing or one implementation of the embodiment of the present application may be combined with the elements and features shown in one or more other drawings or implementations. In addition, in the drawings, similar reference numerals indicate corresponding parts in several drawings, and may be used to indicate corresponding parts used in more than one embodiment.
[0016]
The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the embodiments of the present application, and together with the text description, explain the principle of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the attached picture:
[0017]
Figure 1 is a schematic diagram of the communication system of the present application;
[0018]
FIG. 2 is a schematic diagram of a data transmission method of a vehicle communication (V2X) service in Embodiment 1 of the present application;
[0019]
Figure 3 is a schematic diagram of the partial composition of the terminal device of the present application;
[0020]
4 is a schematic diagram of a data sending method in an implementation of Embodiment 2 of the present application;
[0021]
FIG. 5 is a schematic diagram of a data sending method in another implementation of Embodiment 2 of the present application;
[0022]
FIG. 6 is a schematic diagram of a data sending device of an automobile communication service according to Embodiment 3 of the present application;
[0023]
FIG. 7 is a schematic diagram of a data sending device for a vehicle communication (V2X) service according to Embodiment 4 of the present application;
[0024]
FIG. 8 is a schematic diagram of the structure of a terminal device according to Embodiment 5 of the present application;
[0025]
FIG. 9 is a schematic diagram of the structure of a network device according to Embodiment 6 of the present invention.
detailed description
[0026]
With reference to the drawings, the foregoing and other features of this application will become apparent through the following description. In the specification and drawings, specific implementations of the application are specifically disclosed, which indicate some implementations in which the principles of the application can be adopted. It should be understood that the application is not limited to the described implementations. On the contrary, the present application is not limited to the described implementations. The application includes all modifications, variations and equivalents falling within the scope of the appended claims. Hereinafter, various embodiments of the present application will be described with reference to the accompanying drawings. These implementation manners are only exemplary, and not a limitation of the present application.
[0027]
In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the terms, but they do not indicate the spatial arrangement or temporal order of these elements. These elements should not be used by these terms. Limited. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having" and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
[0028]
In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms, which should be broadly understood as "a" or "a type" rather than being limited to the meaning of "a"; in addition, the term "the" "Should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "based on" should be understood as "based at least in part on...", and the term "based on" should be understood as "based at least in part on...", unless the context clearly dictates otherwise.
[0029]
In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed ​​Packet Access (HSPA, High-Speed ​​Packet Access), etc.
[0030]
In addition, the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
[0031]
In the embodiments of the present application, the term “network device” refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network equipment may include but is not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
[0032]
Among them, the base station may include, but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femto, pico, etc.). And the term "base station" can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and/or its coverage area, depending on the context in which the term is used.
[0033]
In the embodiments of the present application, the term "User Equipment" (UE, User Equipment) or "Terminal Equipment" (TE, Terminal Equipment), for example, refers to a device that accesses a communication network through a network device and receives network services. The terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
[0034]
Among them, terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
[0035]
For another example, in scenarios such as the Internet of Things (IoT, Internet of Things), the terminal device can also be a machine or device that performs monitoring or measurement. For example, it can include but is not limited to: Machine Type Communication (MTC) terminals, Vehicle-mounted communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
[0036]
The following uses examples to illustrate the scenarios of the embodiments of the present application, but the present application is not limited to this.
[0037]
FIG. 1 is a schematic diagram of the communication system of the present application, which schematically illustrates a case where a terminal device and a network device are taken as an example. As shown in FIG. 1, the communication system 100 may include a network device 101 and multiple terminal devices 102. The multiple terminal devices are, for example, a terminal device 1021, a terminal device 1022, a terminal device 1023, and a terminal device 1024.
[0038]
In the embodiment of the present application, existing services or services that can be implemented in the future can be performed between the network device 101 and the terminal device 102. For example, these services include but are not limited to: enhanced mobile broadband (eMBB, enhanced Mobile Broadband), massive machine type communication (mMTC, massive machine type communication), and high-reliability and low-latency communication (URLLC, Ultra-Reliable and Low- Latency Communication), etc.
[0039]
The terminal device 102 can send data to the network device 101 and receive feedback information from the network device 101. The network device 101 may also send data to one or more terminal devices 102 and receive feedback sent by the terminal device 102.
[0040]
In addition, the terminal device 102 may send V2X service-related messages to one or more other terminal devices 102, or the terminal device 102 may receive V2X service-related messages from other terminal devices 102. For example, the terminal device 1021 sends V2X service related messages to the terminal device 1022, or the terminal device 1021 receives V2X service related messages from the terminal device 1022; for another example, the terminal device 1021 sends to the terminal device 1022, the terminal device 1023, and the terminal device 1024. V2X business related news.
[0041]
The following description takes the terminal device in the communication system as the sending end and the terminal device as the receiving end as an example for description, but the application is not limited to this, and the sending end and/or the receiving end may also be other devices. For example, this application is not only applicable to signal transmission between two terminal devices, but also applicable to signal transmission between network devices and terminal devices.
[0042]
Example 1
[0043]
Embodiment 1 of the present application provides a communication method, which can be executed by a terminal device.
[0044]
FIG. 2 is a schematic diagram of the data transmission method of the vehicle communication (V2X) service of this embodiment. As shown in FIG. 2, the method includes:
[0045]
Step 201: The media access control (MAC) layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in one protocol data unit (PDU);
[0046]
Step 202: The MAC layer sends the PDU to the physical layer of the terminal device, and notifies the physical layer of the sending mode corresponding to the PDU.
[0047]
According to this embodiment, the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU). Therefore, the PDU can be the same as the transmission mode. Correspondence, therefore, it is convenient for the physical layer to send data in a corresponding sending mode.
[0048]
For example, the SDU in a PDU corresponds to the same transmission mode, and the physical layer receives the PDU (and is instructed to send the PDU corresponding to the transmission mode. The physical layer can process the PDU to generate the data to be sent. The data corresponds to the sending mode, that is, the data to be sent can be sent in this sending mode. Among them, the PDU received by the physical layer is also called a transport block (TB).
[0049]
In this embodiment, the transmission method includes broadcast, unicast, or groupcast.
[0050]
For example, data can be transmitted between a terminal device and a roadside unit (RSU, roadside unit) or between two terminal devices, and the data can be transmitted through unicast; for example, terminal devices in close proximity can form a group, such as a fleet , The terminal device can send data to group members through multicast.
[0051]
In this embodiment, as shown in FIG. 2, the method may further include:
[0052]
Step 203: The terminal device determines or sets the sending mode.
[0053]
Therefore, in step 201, the SDU contained in the PDU generated by the media access control (MAC) layer of the terminal device can correspond to the transmission mode determined or set in step 203.
[0054]
In step 203 of this embodiment, in one embodiment, the upper layer of the terminal device determines the transmission mode; or, in another embodiment, the access (AS) layer of the terminal device determines the transmission mode; or, In yet another embodiment, the terminal device may set the transmission mode according to the instruction information used to configure or indicate the transmission mode.
[0055]
Hereinafter, each of the above-mentioned embodiments in step 203 will be described separately.
[0056]
Embodiment 1: The upper layer of the terminal device determines the transmission mode.
[0057]
In this embodiment, the upper layer of the terminal device refers to the V2X application layer or the non-access (NAS) layer.
[0058]
In Embodiment 1, the upper layer of the terminal device may determine the transmission mode in two ways. Among them, method 1, the upper layer of the terminal device instructs the data packet (data packet(s)) of the V2X service, and the corresponding transmission mode of the data packet of the V2X service; method 2, the non-access (s) of the terminal device The packet filter of the (NAS) layer determines the corresponding transmission mode of the data in the quality of service stream.
[0059]
Fig. 3 is a schematic diagram of the partial composition of the terminal device, in which 301 and 302 are optional. Hereinafter, in conjunction with FIG. 3, how the corresponding parts of the terminal device in Embodiment 1 work will be explained.
[0060]
In method 1, the upper layer of the terminal device indicates the data packet (s) of the V2X service and the corresponding sending mode of the data packet of the V2X service. The sending mode may be indicated to the packet filter unit (packet filter), and/or the Service Data Adaptation Protocol (SDAP) layer, and/or the Packet Data Convergence Protocol (PDCP) layer.
[0061]
Wherein, when the sending mode is indicated to the packet filter, the packet filter of the terminal device can map the data packet to the QoS flow according to the indicated sending mode, Among them, the data packets corresponding to a quality of service flow are sent in the same manner.
[0062]
The following first describes the case where the transmission mode is instructed to the packet filter unit (packet filter). The corresponding part of the terminal equipment works as follows:
[0063]
Step 1.1. As shown in Figure 3, the packet filter unit (packet filter) 301 of the terminal device can map the data packet to a quality of service flow (QoS flow(s)) according to the data packet and sending mode indicated by the upper layer, where: The corresponding sending modes of data packets in a QoS flow are the same. Therefore, there is a corresponding relationship between the QoS flow and the sending mode. In addition, the packet filtering unit 301 may also mark the sending mode of the quality of service flow.
[0064]
Step 1.2: The service data adaptation protocol (SDAP) layer 302 of the terminal device can map QoS flows to data radio bearers (DRBs), and the result of the mapping can be that the corresponding transmission modes of the quality of service flows on a DRB are the same. Therefore, DRB corresponds to the transmission mode.
[0065]
Step 1.3. The Packet Data Convergence Protocol (PDCP) layer 303 of the terminal device can map QoS flows to data radio bearers (DRB). Among them, the quality of service flow on a DRB corresponds to the same transmission mode. Therefore, the DRB is the same as the transmission mode. correspond. It should be noted that since the SDAP layer 302 is optional, the above step 1.2 is also optional. In the case of step 1.2, the SDAP layer 302 maps QoS flows to DRB, therefore, step 1.3 may not exist; in the absence of step 1.2, there may be step 1.3, and the PDCP layer 303 maps QoS flows to DRB.
[0066]
Step 1.4. The data in the data radio bearer (DRB) is sent to the radio link control (RLC) layer 304 through the corresponding radio link control (RLC) channel, and sent to the media access control through the corresponding logical channel (LCH) (MAC) layer 305. The SDU of the MAC layer 305 comes from a logical channel (LCH). In this process, the data radio bearer (DRB) corresponds to the logical channel (LCH), so the logical channel (LCH) corresponds to the transmission mode, and the SDU from the MAC layer 305 of the logical channel also forms a corresponding relationship with the transmission mode.
[0067]
Step 1.5: The MAC layer 305 may assemble the PDU according to the transmission mode corresponding to the SDU, so that the transmission modes corresponding to the SDU included in the PDU are all the same, as shown in step 201 in FIG. 2. In addition, the MAC layer 305 may also send the PDU (that is, the transmission block) to the physical layer 306, and notify the physical layer 306 of the corresponding transmission mode of the PDU (that is, the transmission block).
[0068]
Regarding the above step 1.1-step 1.5, there can be the following specific examples:
[0069]
For example, the upper layer of the terminal device indicates that packets 1/2/3/4 of the V2X service are unicast transmission, and packet 5/6 is multicast transmission. In the packet filter unit (packet filter) 301, packet 1/2 can be mapped to QoS flow1 (corresponding transmission mode is unicast), packet 3 can be mapped to QoS flow2 (corresponding transmission mode is unicast), and packet 4 Map to QoS flow 3 (the corresponding transmission method is unicast), and map packet 5/6 to QoS flow 4 (the corresponding transmission method is multicast). At the SDAP layer 302 of the terminal device, QoS flow 1/2 can be mapped to the data radio bearer DRB1 (corresponding transmission mode is unicast), QoS flow3 can be mapped to DRB2 (corresponding transmission mode is unicast), and the QoS flow can be mapped to DRB2 (corresponding transmission mode is unicast). 4 is mapped to DRB3 (the corresponding transmission mode is multicast). In this way, the transmission modes corresponding to the logical channels corresponding to DRB1, DRB2, and DRB3 are unicast, unicast, and multicast, respectively. The MAC layer 305 performs logical channel priority processing, and the generated MAC PDU includes the data of the logical channel corresponding to DRB1 and DRB2, that is, the MAC SDU comes from the logical channel corresponding to DRB1 and DRB2 (the corresponding transmission mode is unicast), in this case The corresponding transmission mode of the next MAC PDU is unicast; or the generated MAC PDU includes the data of the logical channel corresponding to DRB3, that is, the MAC SDU comes from the logical channel corresponding to DRB3 (the corresponding transmission mode is multicast). In this case, the MAC The transmission mode corresponding to the PDU is multicast. The MAC layer 305 notifies the physical layer 306 of the transmission mode corresponding to the MAC PDU, and sends the MAC PDU to the physical layer 306 for the subsequent processing of the physical layer 306. For example, the physical layer 306 processes the MAC PDU to generate the to-be-sent The data to be sent corresponds to the sending mode, that is, the data to be sent can be sent in this sending mode.
[0070]
In the above, in Method 1 of Embodiment 1, the case where the transmission method is instructed to the packet filter has been described.
[0071]
In the case that the sending mode is indicated to the SDAP layer 302, the service data adaptation protocol (SDAP) layer maps the quality of service flow or V2X service data packets to the data radio bearer (DRB) according to the indicated sending mode, Among them, the quality of service flow on a DRB or the corresponding sending mode of the data packet of the V2X service is the same. In addition, the processing of the PDCP layer 303, the RLC layer 304, and the MAC layer 305 can refer to the description of the above step 1.3, step 1.4, and step 1.5.
[0072]
In the case that the transmission mode is indicated to the packet data convergence protocol (PDCP) layer 303 of the terminal device, the packet data convergence protocol (PDCP) layer maps the quality of service flow or the data packets of the V2X service according to the indicated transmission mode To the data radio bearer (DRB), the corresponding transmission mode of the quality of service flow or V2X service data packet on a DRB is the same. In addition, the processing of the RLC layer 304 and the MAC layer 305 can refer to the description of the above step 1.4 and step 1.5.
[0073]
In the method 2 of the first embodiment, the packet filter unit (packet filter) 301 of the non-access (NAS) layer of the terminal device determines the transmission method corresponding to the data in the quality of service flow.
[0074]
For example, the packet filter unit of the terminal device maps the data packets of the V2X service to the quality of service flow (QoS flow), where the data packets in a quality of service flow correspond to the same sending mode, and the packet filter unit decides The sending method corresponding to a quality of service flow. In addition, the packet filtering unit may also notify SDAP of the sending mode. In addition, the processing of the SDAP layer 302, the PDCP layer 303, the RLC layer 304, and the MAC layer 305 can refer to the description of the above step 1.2, step 1.3, step 1.4, and step 1.5.
[0075]
Embodiment 2: The access layer of the terminal device determines the transmission mode.
[0076]
In this embodiment, the access (AS) layer of the terminal device may include an SDAP layer 302, a PDCP layer 303, an RLC layer 304, and a MAC layer 305. In Embodiment 2, the transmission method can be determined by the SDAP layer 302, the PDCP layer 303, the RLC layer 304, or the MAC layer 305.
[0077]
For the case where the SDAP layer 302 decides the sending mode: The Service Data Adaptation Protocol (SDAP) layer can determine the sending mode corresponding to the QoS flow or V2X service data packet, and map the QoS flow or the V2X service data packet To a data radio bearer (DRB), where the QoS flow on a DRB or the corresponding transmission mode of the V2X service data packet is the same; or, the service data adaptation protocol (SDAP) layer transfers the QoS flow Or the data packet of the V2X service is mapped to a data radio bearer (DRB), and the transmission mode corresponding to the DRB is determined.
[0078]
For example, the data packet(s) of the V2X service is mapped to QoS flows by the Packet filter layer 301. The SDAP layer 302 determines the transmission mode corresponding to the QoS flow, and maps the QoS flow to the DRB, so that the corresponding transmission modes of the QoS flow corresponding to a DRB are all the same; or, the SDAP layer 302 maps the QoS flow to the DRB, and, The SDAP layer determines the transmission mode corresponding to the DRB. In addition, the processing of the PDCP layer 303, the RLC layer 304, and the MAC layer 305 can refer to the description of the above step 1.3, step 1.4, and step 1.5.
[0079]
For the case where the PDCP layer 303 determines the transmission mode: the Packet Data Convergence Protocol (PDCP) layer determines the transmission mode corresponding to the DRB or the radio link control channel (RLC channel) corresponding to the DRB or the transmission mode corresponding to the logical channel corresponding to the DRB.
[0080]
For example, the data packet(s) of the V2X service is mapped to QoS flows by the Packet filter layer 301, the SDAP layer 302 maps the QoS flow to the DRB, and the PDCP layer 303 determines the transmission mode corresponding to the DRB or the RLC channel corresponding to the DRB or the logic corresponding to the DRB The sending mode corresponding to the channel. In addition, the processing of the RLC layer 304 and the MAC layer 305 can refer to the description of the above step 1.4 and step 1.5.
[0081]
For the case where the RLC layer 304 determines the transmission method: the radio link control (RLC) layer 304 determines the transmission method corresponding to the radio link control channel (RLC channel) or the transmission method corresponding to the logical channel.
[0082]
For example, the data packet(s) of the V2X service is mapped to QoS flows by the Packet filter layer 301, and the SDAP layer 302 maps the QoS flow to the DRB. The RLC layer 304 determines the transmission mode corresponding to the RLC channel corresponding to the DRB or the transmission corresponding to the logical channel. the way. In addition, the processing of the MAC layer 305 can refer to the description of step 1.5 above.
[0083]
For the case where the transmission mode is determined by the MAC layer 305: the media access control (MAC) layer 305 determines the transmission mode corresponding to the logic channel or the transmission mode of the MAC PDU.
[0084]
For example, the data packet(s) of the V2X service is mapped to QoS flows by the Packet filter layer 301, and the SDAP layer 302 maps the QoS flow to the DRB. The data of the logical channel corresponding to the DRB is sent to the MAC layer as a MAC SDU, and the MAC passes through the logical channel. Priority processing process, generating MAC PDU including MAC SDU. The MAC layer 305 determines the transmission method corresponding to the logic channel or the transmission method corresponding to the MAC PDU. In addition, the MAC layer 305 may notify the physical layer 306 of the MAC PDU and its corresponding transmission mode.
[0085]
In the first and second embodiments of this embodiment, the terminal device determines the transmission mode, and each layer of the terminal device can learn the transmission mode in at least one method.
[0086]
In an example, the method for knowing the sending mode may be: the higher layer of the terminal device notifies the lower layer of the sending mode, for example, the SDAP layer notifies the PDCP layer of the DRB corresponding transmission mode, and/or the PDCP layer notifies the RLC The layer is about the sending mode corresponding to the RLC channel, and/or the RLC notifies the MAC about the sending mode of the logical channel. In addition, it can also be cross-layer notification, for example, the PDCP layer directly notifies the MAC layer about the sending mode of the logical channel.
[0087]
In another example, the method for knowing the sending mode may be: the terminal device responds to the V2X service data packet, and/or the quality of service flow (QoS flow), and/or the data radio bearer (DRB), and/or the wireless link Mark the control (RLC) channel and/or the transmission mode corresponding to the logical channel, for example, mark the transmission mode of the V2X service data packet and/or the quality of service flow and/or the data radio bearer, and each layer reads the flow/DRB /RLC/Logical channel transmission mode.
[0088]
In the above-mentioned Embodiment 1 and Embodiment 2 of this embodiment, the terminal device determines the sending mode. Therefore, the terminal device can notify the network device of the sending mode, so that the network device can allocate appropriate sidelink resources to send data, such as when When the terminal device processes the network coverage, it is convenient for the network device to allocate appropriate sidelink resources to send data.
[0089]
Among them, the terminal device can notify the network device of the sending method through the radio resource control (RRC) message of the sidelink UE information (sidelink UE information), or the sidelink buffer status report (BSR), or schedule The request (Scheduling request, SR) informs the network device of the sending mode.
[0090]
For example, in the case that the terminal device informs the network device of the sending mode through the RRC message of sidelink UE information, the RRC message includes the UE’s V2X service, and/or QoS flow, and/or DRB , And/or the transmission mode corresponding to the logical channel;
[0091]
In the case that the terminal device notifies the network device of the transmission mode through the BSR, the BSR includes the transmission mode corresponding to the logical channel and/or logical channel group;
[0092]
In the case that the terminal device notifies the network device of the transmission mode through the SR, the SR includes the transmission mode corresponding to the logical channel corresponding to the SR, or the SR includes the logical channel identifier and the transmission mode corresponding to the logical channel.
[0093]
Correspondingly, when the network device receives the transmission mode notification message of the terminal device, it can allocate a sidelink resource pool (sidelink resource pool) and/or a sidelink grant (sidelink grant) suitable for the transmission mode to the UE.
[0094]
Embodiment 3: The terminal device sets the sending mode according to the instruction information used to configure or instruct the sending mode.
[0095]
In Embodiment 3, the indication information may be provided by a network device, and the network device may be a network device of a core network or a network device of an access network; the indication information may also be pre-configured to the terminal device; in addition, the The indication information can also be provided by the roadside unit (RSU) for the terminal device.
[0096]
In Embodiment 3, in the case where the indication information is provided by the network equipment of the core network, the terminal equipment may receive the indication information through dedicated RRC signaling or system information.
[0097]
The instruction information provided by the network equipment of the core network can be used to configure the corresponding sending mode of data packets and/or QoS flows on the side link.
[0098]
The indication information includes the configuration of the sending mode used by each of the data packets of the V2X service on one or more side links (for example, indicating the sending mode for the V2X service type), or the sending mode of one or more QoS flows. Configuration (this configuration includes QoS flow ID and its corresponding sending mode).
[0099]
For example, when the terminal device is in the coverage of the network device of the core network, after receiving the instruction information, the terminal device can configure the sending mode corresponding to data packets and/or QoS flows on the side link according to the instruction information. After the sending mode is set, the behavior of each layer of the terminal device can be referred to the description in Embodiment 1.
[0100]
In Embodiment 3, in the case that the indication information is provided by the network equipment of the access network, the terminal equipment may receive the indication information through dedicated RRC signaling or system information or MAC control signaling or physical layer control signaling. .
[0101]
In the case that the terminal device receives the indication information through dedicated RRC signaling or system information, the indication information can be used to configure the DRB, and/or RLC channel, and/or the corresponding transmission mode of the logical channel on the side link. The indication information includes the DRB identification (ID) and/or the RLC channel identification and/or the logical channel identification and the corresponding transmission mode on the side link.
[0102]
For example, when the terminal device is in the coverage of the network device of the access network, after receiving the indication information, the terminal device can configure the DRB, and/or RLC channel, and/or logic on the side link according to the indication information The transmission mode of the channel. After the transmission mode is set, the behavior of each layer of the terminal device can be referred to the description in the second embodiment.
[0103]
In the case that the terminal device receives the indication information through MAC control signaling, the indication information can be used to configure the transmission mode corresponding to the logical channel or logical channel group on the side link. The indication information includes the logical channel identifier or logical channel group identifier on the side link and its corresponding transmission mode, or the indication information includes a bitmap file (bitmap) used to indicate which logical channels or logic are included in the MAC CE of the terminal device The transmission mode corresponding to the channel group and the transmission mode corresponding to the included logical channel or logical channel group.
[0104]
In the case that the terminal device receives the indication information through the physical layer control signaling, the indication information may also include the sending mode corresponding to the scheduled side link data, for example, the sending corresponding to the scheduled side link MAC PDU (that is, the transmission block) the way.
[0105]
For example, the indication information may be included in downlink control information (DCI), such as a sidelink grant, and the indication information can indicate the side link data scheduled this time or N (N is a positive integer) times. Corresponding transmission mode, such as the transmission mode corresponding to the side link MAC PDU (that is, transmission block) scheduled this time or N times, the terminal device can set the side link to be sent this time or N times according to the instruction information The corresponding transmission mode of the data is broadcast, multicast or unicast. For example, the corresponding transmission mode of the side link MAC PDU (i.e. transport block) to be sent this time or N times is set to broadcast, multicast or unicast. Among them, N times means this time and the next few times this time.
[0106]
In Embodiment 3, the pre-configured indication information can be used to configure data packets, and/or QoS flows, and/or DRB, and/or RLC channels, and/or logical channels corresponding to the transmission mode on the side link.
[0107]
For example, the terminal device configures the DRB, and/or RLC channel, and/or logical channel transmission mode on the side link according to the pre-configured instruction information. When the transmission mode is set, the behavior of each layer of the terminal device can be See the description in Embodiment 1 or 2.
[0108]
In step 203 of this embodiment, according to Embodiment 1 and Embodiment 2, the upper layer or access layer of the terminal device determines the transmission mode. The following describes the basis for the terminal device to determine the transmission method in Embodiment 1 and Embodiment 2.
[0109]
In this embodiment, the upper layer or access layer of the terminal device may be based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the data contained in the The content of the information and/or the geographic location of the terminal device determine the corresponding sending mode of the data.
[0110]
In this embodiment, the QoS characteristics include: the priority of the data, and/or the time delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the communication range of the data.
[0111]
For example, the sending mode of high-priority data with a priority higher than the first threshold may be unicast or multicast, and the sending mode of low-priority data with a priority lower than the second threshold may be broadcast; the delay requirement is higher than the first threshold. The three-threshold high-delay data transmission method can be unicast or multicast, and the data transmission method with the loose delay requirement lower than the fourth threshold can be broadcast; the reliability requirement is higher than the fifth threshold The sending method of data with high reliability requirements can be unicast or multicast, and the sending method of data with low reliability requirements whose reliability requirements are lower than the sixth threshold can be broadcast; high data whose data rate is higher than the seventh threshold The data transmission method of the rate can be broadcast. The data transmission method of the low data rate whose data rate is higher than the eighth threshold can be unicast; the data transmission method of the small communication range whose communication range is less than the ninth threshold can be unicast. The data transmission mode of the large communication range whose communication range is greater than the tenth threshold may be multicast or broadcast.
[0112]
In this embodiment, there may be a mapping relationship between the QoS level indication of the data and the transmission mode, so that the transmission mode can be determined based on the QoS level indication. Among them, the QoS level indication of the data may correspond to the values ​​of more than two QoS characteristics. For example, when the QoS level indication is a certain level, the level indication corresponds to the first value of each of the multiple QoS characteristics, and the QoS level indication When it is another level, the level indication corresponds to the second value of each of the multiple QoS characteristics. Among them, a QoS feature includes: the priority of the data, or the delay of the data, or the reliability of the data, or the data rate of the data, or the communication range of the data, etc.
[0113]
In this embodiment, the sending method of the data is determined based on the destination terminal device to which the data to be sent is to be sent. For example, it can be: in a group, the terminal device as a group member sends to other terminal devices as other group members The data can be sent in multicast mode, the data sent to the specific terminal device as a group member or the terminal device as the group head can be sent in unicast mode, and the data sent to the terminal equipment in and outside the group can be sent in broadcast mode. .
[0114]
In this embodiment, the content of the information included in the data includes: road conditions, and/or environment, and/or accident information; or, includes business requests and/or feedback; or, group public information. The data transmission method is determined based on the content of the information contained in the data. For example, the data transmission method including road conditions, environment, accidents, etc. may be broadcast; the data transmission method including service requests, feedback, etc. may be Unicast: The sending mode of the data containing the group public information can be multicast, where the group public information can be, for example, group security information and/or fleet notification information.
[0115]
In this embodiment, the data transmission method is determined based on the geographic location of the terminal device. For example, when the geographic location of the terminal device is located in area A, the data transmission method may be multicast. When the geographic location is in area B, the data transmission method may be unicast or the like.
[0116]
In this embodiment, suitable unicast, multicast, or broadcast transmission methods can be used according to the characteristics of the data to be sent, which is conducive to data transmission meeting its QoS or being sent to a specific destination, while ensuring high Radio resource utilization.
[0117]
In addition, in step 203 of this embodiment, in Embodiment 3 where the terminal device sets the transmission mode according to the instruction information, the transmission mode indicated by the instruction information may also be determined based on the foregoing basis. For example, the network equipment of the core network, the network equipment of the access network, or the roadside unit is based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the data The content of the information contained in and/or the geographic location of the terminal device determines the sending method corresponding to the data to be sent, and the sending method is indicated to the terminal device through instruction information; or, in the instruction information pre-configured to the terminal device , Also according to the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the content of the information contained in the data, and/or the geographic location of the terminal device Decide the sending mode corresponding to the data to be sent.
[0118]
According to this embodiment, the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU). Therefore, the PDU can be compared with the transmission mode. Therefore, it is convenient for the physical layer to send data in the corresponding sending mode; in addition, in this embodiment, the terminal device decides or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement .
[0119]
Example 2
[0120]
This embodiment 2 provides a data sending method, which is executed by a network device.
[0121]
FIG. 4 is a schematic diagram of the data sending method in an embodiment of Embodiment 2 of the present application. This embodiment of Embodiment 2 corresponds to Embodiment 3 of step 203 of Embodiment 1. As shown in Figure 4, the method includes:
[0122]
Step 401: The network device generates instruction information for configuring or instructing the data transmission mode of the terminal device; and
[0123]
Step 402: The network device sends the instruction information to the terminal device.
[0124]
In this embodiment, the sending mode includes unicast, multicast or broadcast.
[0125]
In this embodiment, the network device may be a network device of a core network or a network device of an access network.
[0126]
In this embodiment, when the network device is the network device of the core network, the indication information sent by the network device is used to configure the corresponding sending mode of data packets and/or QoS flows on the side link of the terminal device.
[0127]
In this embodiment, when the network device is the network device of the access network, the instruction information sent by the network device of the access network is used to configure the DRB and/or RLC channel on the side link of the terminal device, and/or Or how the logical channel is sent.
[0128]
In this embodiment, when the network device is the network device of the access network, the indication information sent by the network device of the access network may also include the sending mode corresponding to the scheduled side link data.
[0129]
In this embodiment, the network device configures or instructs the terminal device to perform the data transmission mode of the car communication service. The terminal device can set the transmission mode according to the instruction information, and send the data transmission mode of the car communication service in the set transmission mode. data.
[0130]
FIG. 5 is a schematic diagram of the data sending method in another embodiment of Embodiment 2 of the present application, and this other embodiment corresponds to Embodiment 1 and Embodiment 2 of step 203 of Embodiment 1. As shown in Figure 5, the method includes:
[0131]
Step 501: The network device receives the notification of the sending mode of the data of the terminal device sent by the terminal device.
[0132]
In step 501, the network device can use the radio resource control (RRC) message of the side link UE information, or the sidelink buffer status report (BSR), or the scheduling request (Scheduling request). request, SR) to receive the notification.
[0133]
In this embodiment, in the instruction information described in the embodiment of FIG. 4, or in the received notification described in the embodiment of FIG. 5, the sending mode may be based on the QoS characteristics of the data to be sent, and/ Or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the content of the information contained in the data, and/or the geographic location of the terminal device.
[0134]
Among them, the QoS characteristics include: the priority of the data, and/or the delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the communication range of the data; the content of the information contained in the data Including: road conditions, and/or environment, and/or accident information; or, including business requests, and/or feedback; or, group public information.
[0135]
In addition, step 501 may also be combined with FIG. 4, that is, the method in FIG. 4 may include step 401, step 402, and step 501.
[0136]
According to this embodiment, it is convenient for the physical layer to send data in a corresponding sending mode; in addition, suitable unicast, multicast or broadcast sending modes can be used according to the characteristics of the data to be sent, which is beneficial for data transmission to meet its QoS or be Send to a specific destination while ensuring a high utilization rate of wireless resources.
[0137]
Example 3
[0138]
The third embodiment provides a data sending device for automobile communication service, which is set in a terminal device. Since the principle of the device to solve the problem is similar to the method of embodiment 1, its specific implementation can refer to the implementation of the method of embodiment 1, and the same contents will not be repeated.
[0139]
FIG. 6 is a schematic diagram of a data sending device of an automobile communication service according to Embodiment 3. As shown in FIG. 6, the device 600 includes:
[0140]
The first generating unit 601 is set at the media access control (MAC) layer of the terminal device, and the generating unit uses the same sending mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU) Means to generate at least one PDU; and
[0141]
The first sending unit 602, which is provided at the MAC layer, is configured to send the PDU to the physical layer of the terminal device, and notify the physical layer of the sending mode corresponding to the PDU.
[0142]
In this embodiment, the sending mode includes unicast, multicast or broadcast.
[0143]
As shown in FIG. 6, the device 600 further includes:
[0144]
The first deciding unit 603, which is arranged at the upper layer of the terminal device, is used to decide the transmission mode.
[0145]
In the first embodiment, the first determining unit 603 instructs the data packet (s) of the V2X service and the corresponding transmission mode of the data packet of the V2X service.
[0146]
In Embodiment 1, as shown in FIG. 6, the apparatus 600 further includes:
[0147]
The first mapping unit 604 is arranged in a packet filter of the terminal device, and the first mapping unit maps the data packet to a QoS flow, where one QoS flow The corresponding sending method of the data packet is the same.
[0148]
In Embodiment 1, as shown in FIG. 6, the device 600 further includes:
[0149]
The second mapping unit 605 is set at the service data adaptation protocol (SDAP) layer of the terminal device, and the second mapping unit maps the quality of service flow or the data packets of the V2X service to the data radio bearer (DRB) , Wherein the corresponding sending modes of the quality of service flow or the data packet of the V2X service on one DRB are the same.
[0150]
In Embodiment 1, as shown in FIG. 6, the device 600 further includes:
[0151]
The third mapping unit 606 is set at the packet data convergence protocol (PDCP) layer of the terminal device, and the third mapping unit maps the quality of service flow or the V2X service data packet to a data radio bearer (DRB), wherein The corresponding sending modes of the quality of service flow or the data packet of the V2X service on one DRB are the same.
[0152]
In Embodiment 1, the first determining unit 603 is provided in the packet filtering unit. Wherein, the packet filter unit (packet filter) maps the data packet to the quality of service flow (QoS flow), wherein the data packets in a quality of service flow correspond to the same transmission mode, and the transmission mode corresponding to the quality of service flow is determined by all The first decision unit decides.
[0153]
In Embodiment 2, as shown in FIG. 6, the device 600 further includes:
[0154]
The second determining unit 607, which is provided at the access (AS) layer of the terminal device, is used to determine the sending mode.
[0155]
Wherein, the second determining unit 607 is set in the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, or the medium access control (MAC) layer of the terminal device. Layer, and the second determining unit determines the transmission mode.
[0156]
For example, the second deciding unit 607 is set at the service data adaptation protocol (SDAP) layer, and the second deciding unit decides the sending mode corresponding to the data packet of the QoS flow or V2X service, and the service The Data Adaptation Protocol (SDAP) layer maps the QoS flow or the data packets of the V2X service to the data radio bearer (DRB), where the QoS flow on a DRB or the data packets of the V2X service corresponds to The sending method is the same; or the service data adaptation protocol (SDAP) layer maps the QoS flow or the V2X service data packet to the data radio bearer (DRB), and the second determining unit determines that the DRB corresponds to The said sending method.
[0157]
For another example, the second determining unit 607 is set at the Packet Data Convergence Protocol (PDCP) layer, and is used to determine the transmission mode corresponding to the DRB and the radio link control channel (RLC channel) corresponding to the DRB. The sending mode, or the sending mode corresponding to the logical channel corresponding to the DRB.
[0158]
For another example, the second determining unit 607 is set in the radio link control (RLC) layer, and is used to determine the transmission mode corresponding to the radio link control channel (RLC channel) or the transmission mode corresponding to the logical channel .
[0159]
For another example, the second determining unit 607 is provided at the medium access control (MAC) layer, and is configured to determine the transmission mode corresponding to a logic channel or the transmission mode corresponding to a MAC PDU.
[0160]
In Embodiment 1 and Embodiment 2, as shown in FIG. 6, the device 600 further includes:
[0161]
The second sending unit 608, which is provided at a higher layer of the terminal device, is used to notify the lower layer of the sending mode; or, the marking unit 609, which is used to send data packets of the V2X service and/or the quality of service The flow (QoS flow), and/or the data radio bearer (DRB), and/or the radio link control (RLC) channel, and/or the transmission mode corresponding to the logical channel are marked.
[0162]
In Embodiment 1 and Embodiment 2, as shown in FIG. 6, the device 600 further includes:
[0163]
The first notification unit 610 is configured to notify the network device of the sending mode.
[0164]
Wherein, the first notification unit 610 uses a radio resource control (RRC) message of side link UE information, or a sidelink buffer status report (BSR), or a scheduling request (Scheduling request, SR) Notifying the network device of the sending mode.
[0165]
In Embodiment 3, as shown in FIG. 6, the device 600 further includes:
[0166]
The first setting unit 611, which sets the transmission mode according to the instruction information used to configure or instruct the transmission mode, wherein the instruction information is provided by the network device of the core network or is provided by the network of the access network The equipment is provided, either by the roadside unit (RSU), or pre-configured.
[0167]
Wherein, the instruction information provided by the network device of the core network is used to configure the corresponding sending mode of data packets and/or QoS flows on the side link; the instruction information provided by the network device of the access network is used to configure the DRB on the side link And/or the sending mode corresponding to the RLC channel and/or the logical channel; the indication information provided by the network device of the access network includes the sending mode of the scheduled side link data.
[0168]
In Embodiment 3, the pre-configured indication information is used to configure the data packets, and/or QoS flows, and/or DRB, and/or RLC channel, and/or logical channel corresponding to the transmission mode on the side link.
[0169]
In this embodiment, the sending method is based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the content of the information contained in the data , And/or the geographic location of the terminal device.
[0170]
Wherein, the QoS characteristics include: the priority of the data, and/or the time delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the communication range of the data; the information contained in the data The content includes: road conditions, and/or environment, and/or accident information; or, includes business requests, and/or feedback; or, group public information.
[0171]
For the detailed description of each unit, please refer to the description of the corresponding steps in Embodiment 1, and the description will not be repeated here.
[0172]
According to this embodiment, the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU). Therefore, the PDU can be compared with the transmission mode. Therefore, it is convenient for the physical layer to send data in the corresponding sending mode; in addition, in this embodiment, the terminal device decides or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement .
[0173]
Example 4
[0174]
The fourth embodiment provides a data transmission device for a vehicle communication (V2X) service, which is set in a network device. Since the principle of the device to solve the problem is similar to the method of embodiment 2, its specific implementation can refer to the implementation of the method of embodiment 2, and the same content will not be repeated.
[0175]
FIG. 7 is a schematic diagram of the data transmission device of the vehicle communication (V2X) service of the fourth embodiment. As shown in FIG. 7, the apparatus 700 includes:
[0176]
A second generating unit 701, which generates instruction information for configuring or instructing the data transmission mode of the terminal device; and
[0177]
The third sending unit 702 sends the instruction information to the terminal device.
[0178]
In this embodiment, the network device is a network device of a core network or a network device of an access network.
[0179]
In this embodiment, when the network device is a core network network device, the instruction information is used to configure the sending mode of data packets and/or QoS flows on the side link.
[0180]
In this embodiment, when the network device is a network device of an access network, the indication information is used to configure the sending mode of the DRB, and/or RLC channel, and/or logical channel on the side link.
[0181]
As shown in FIG. 7, the apparatus 700 may further include:
[0182]
The first receiving unit 703 receives the notification of the sending mode of the data of the terminal device sent by the terminal device.
[0183]
Wherein, the first receiving unit uses a radio resource control (RRC) message of side link UE information, or a sidelink buffer status report (BSR), or a scheduling request (Scheduling request, SR). ) Receive the notification.
[0184]
In this embodiment, in the indication information generated by the second generating unit, or in the notification received by the first receiving unit:
[0185]
The sending method is based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the content of the information contained in the data, and/or The geographic location of the terminal device is determined.
[0186]
Wherein, the QoS characteristics include: the priority of the data, and/or the time delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the communication range of the data;
[0187]
The content of the information contained in the data includes: road conditions, and/or environment, and/or accident information; or, includes business requests and/or feedback; or, group public information.
[0188]
In addition, it should be noted that the device 700 in this embodiment may also have only the first receiving unit 703.
[0189]
In this embodiment, for the description of each unit, reference may be made to the description of each step in the second embodiment.
[0190]
According to this embodiment, it is convenient for the physical layer to send data in a corresponding sending mode; in addition, suitable unicast, multicast or broadcast sending modes can be used according to the characteristics of the data to be sent, which is beneficial for data transmission to meet its QoS or be Send to a specific destination while ensuring a high utilization rate of wireless resources.
[0191]
Example 5
[0192]
This embodiment 5 provides a terminal device. Since the principle of the device to solve the problem is similar to the method of embodiment 1, its specific implementation can refer to the method of embodiment 1, and the same content will not be repeated.
[0193]
FIG. 8 is a schematic diagram of the structure of a terminal device in an embodiment of the present application. As shown in FIG. 8, the terminal device 800 may include: a central processing unit (CPU) 801 and a memory 802; the memory 802 is coupled to the central processing unit 801. The memory 802 can store various data; in addition, it also stores a data processing program, and the program is executed under the control of the central processing unit 801 to instruct the terminal device according to the received signaling.
[0194]
In an embodiment, the functions of the apparatus 600 of Embodiment 3 may be integrated into the central processing unit 801 of the terminal device 800. Wherein, the central processing unit 801 may be configured to implement the data transmission method of the vehicle communication (V2X) service described in the first embodiment.
[0195]
For example, the central processing unit 801 may be configured to perform control so that the terminal device 800 executes the method of Embodiment 1.
[0196]
In addition, for other configurations of the central processing unit 801, please refer to Embodiment 1, which will not be repeated here.
[0197]
In another embodiment, the above-mentioned device 600 can be configured separately from the central processing unit 801. For example, the device 600 can be configured as a chip connected to the central processing unit 801, as shown in FIG. 8, through the central processing unit 801. Control to realize the functions of the device 600.
[0198]
According to this embodiment, the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU). Therefore, the PDU can be compared with the transmission mode. Therefore, it is convenient for the physical layer to send data in the corresponding sending mode; in addition, in this embodiment, the terminal device decides or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement .
[0199]
Example 6
[0200]
The sixth embodiment provides a network device. The principle of the device to solve the problem is similar to the method of the second embodiment. Therefore, the specific implementation can refer to the method of the second embodiment, and the same content will not be repeated.
[0201]
FIG. 9 is a schematic diagram of the structure of a network device according to an embodiment of the present invention. As shown in FIG. 9, the network device 900 may include: a central processing unit (CPU) 901 and a memory 902; the memory 902 is coupled to the central processing unit 901. The memory 902 can store various data; in addition, it also stores data processing programs, which are executed under the control of the central processing unit 901.
[0202]
In one embodiment, the functions of the device 500 may be integrated into the central processing unit 901. Wherein, the central processing unit 901 may be configured to implement the method of the second embodiment.
[0203]
For example, the central processing unit 901 may be configured to perform control so that the network device 900 executes the method of Embodiment 2.
[0204]
In addition, for other configurations of the central processing unit 901, please refer to Embodiment 2, which will not be repeated here.
[0205]
In another embodiment, the above-mentioned device 1000 can be configured separately from the central processing unit 901. For example, the device 700 can be configured as a chip connected to the central processing unit 901, such as the unit shown in FIG. Control to realize the functions of the device 700.
[0206]
In addition, as shown in FIG. 9, the network device 900 may also include: a transceiver 903 and an antenna 904, etc.; wherein the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the network device 900 does not necessarily include all the components shown in FIG. 9; in addition, the network device 900 may also include components not shown in FIG. 9, and reference may be made to the prior art.
[0207]
According to this embodiment, it is convenient for the physical layer to send data in a corresponding sending mode; in addition, suitable unicast, multicast or broadcast sending modes can be used according to the characteristics of the data to be sent, which is beneficial for data transmission to meet its QoS or be Send to a specific destination while ensuring a high utilization rate of wireless resources.
[0208]
Example 7
[0209]
The seventh embodiment provides a communication system, which includes at least the terminal device 800 in the fifth embodiment and the network device 900 in the sixth embodiment. The contents of Embodiment 5 and Embodiment 6 are combined here, and will not be repeated here.
[0210]
According to this embodiment, the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU). Therefore, the PDU can be compared with the transmission mode. Therefore, it is convenient for the physical layer to send data in the corresponding sending mode; in addition, in this embodiment, the terminal device decides or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement .
[0211]
The embodiment of the present invention also provides a storage medium storing a computer readable program, wherein the computer readable program enables the data sending device or terminal device of the vehicle communication (V2X) service to execute the vehicle communication (V2X) described in the first embodiment. The data transmission method of the business.
[0212]
The embodiment of the present invention also provides a computer readable program, wherein when the program is executed in the data transmission device or terminal device of the vehicle communication (V2X) service, the program causes the data transmission device or the data transmission device of the vehicle communication (V2X) service or The terminal device executes the data transmission method of the vehicle communication (V2X) service of the first embodiment.
[0213]
The embodiment of the present invention also provides a storage medium storing a computer-readable program, wherein the computer-readable program enables the data sending device or network device of the vehicle communication (V2X) service to execute the vehicle communication (V2X) service of the second embodiment. Data transmission method.
[0214]
The embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in the data transmission device or network device of the vehicle communication (V2X) service, the program enables the data transmission device or network of the vehicle communication (V2X) service The device executes the data sending method of the vehicle communication (V2X) service described in the second embodiment.
[0215]
The above devices and methods of the present invention can be implemented by hardware, or can be implemented by hardware combined with software. The present invention relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps. The present invention also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, and the like.
[0216]
The processing methods in each device described in conjunction with the embodiments of the present invention may be directly embodied in hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in FIGS. 5 and 6 and/or one or more combinations of the functional block diagrams may correspond to each software module of the computer program flow or each hardware module. These software modules can correspond to the steps shown in Figures 2 and 4 respectively. These hardware modules can be implemented, for example, by using a field programmable gate array (FPGA) to solidify these software modules.
[0217]
The software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. A storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor. The processor and the storage medium may be located in the ASIC. The software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a larger-capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
[0218]
One or more of the functional block diagrams described in FIGS. 5 and 6 and/or one or more combinations of the functional block diagrams can be implemented as a general-purpose processor or a digital signal processor (DSP) for performing the functions described in this application. , Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional block diagrams described in FIGS. 5 and 6 and/or one or more combinations of the functional block diagrams can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, and multiple micro-processing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
[0219]
The present invention has been described above in conjunction with specific embodiments, but it should be clear to those skilled in the art that these descriptions are all exemplary and do not limit the protection scope of the present invention. Those skilled in the art can make various variations and modifications to the present invention based on the principles of the present invention, and these variations and modifications are also within the scope of the present invention.
[0220]
This application also provides the following supplementary notes:
[0221]
1. A data transmission device for vehicle communication (V2X) service, which is set in a terminal device and includes:
[0222]
A first generating unit, which is set at the media access control (MAC) layer of the terminal device, and the generating unit uses the same manner as the transmission mode corresponding to the service data unit (SDU) contained in a protocol data unit (PDU) Generate at least one PDU; and
[0223]
The first sending unit, which is set at the MAC layer, is configured to send the PDU to the physical layer of the terminal device, and notify the physical layer of the sending mode corresponding to the PDU.
[0224]
2. The device as described in Supplement 1, wherein:
[0225]
The sending mode includes unicast, multicast or broadcast.
[0226]
3. The device according to Supplement 1, wherein the device further includes:
[0227]
The first deciding unit, which is arranged at the upper layer of the terminal device, is used to decide the sending mode.
[0228]
4. The device as described in appendix 3, wherein:
[0229]
The first determining unit indicates the data packet (data packet(s)) of the V2X service and the corresponding sending mode of the data packet of the V2X service.
[0230]
5. The device according to Supplement 4, wherein the device further comprises:
[0231]
A first mapping unit, which is provided in a packet filter of the terminal device, and the first mapping unit maps the data packet to a QoS flow, wherein the data packet in a QoS flow is The sending method corresponding to the data packet is the same.
[0232]
6. The device according to appendix 4, wherein the device further comprises:
[0233]
A second mapping unit, which is set at the service data adaptation protocol (SDAP) layer of the terminal device, and the second mapping unit maps the quality of service flow or the data packets of the V2X service to the data radio bearer (DRB), Wherein, the corresponding sending modes of the quality of service flow or the data packet of the V2X service on one DRB are the same.
[0234]
7. The device according to appendix 4, wherein the device further comprises:
[0235]
The third mapping unit is set at the packet data convergence protocol (PDCP) layer of the terminal device, and the third mapping unit maps the quality of service flow or the V2X service data packet to a data radio bearer (DRB), wherein: The corresponding sending modes of the quality of service flow or the data packet of the V2X service on one DRB are the same.
[0236]
8. The device as described in appendix 3, wherein:
[0237]
The packet filter unit (packet filter) of the terminal device maps the data packet to a quality of service flow (QoS flow), wherein the data packets in a quality of service flow correspond to the same sending mode,
[0238]
The first determining unit is provided in the packet filtering unit, and the sending mode corresponding to the quality of service flow is determined by the first determining unit.
[0239]
9. The device according to Supplement 1, wherein the device further comprises:
[0240]
The second decision unit is set at the access (AS) layer of the terminal device and is used to decide the sending mode.
[0241]
10. The device according to Supplement 9, wherein:
[0242]
The second deciding unit is set at a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, or a medium access control (MAC) layer of the terminal device And, the second determining unit determines the transmission mode.
[0243]
11. The device according to Supplement 10, wherein:
[0244]
The second determining unit is set at the service data adaptation protocol (SDAP) layer,
[0245]
The second determining unit determines the sending mode corresponding to the data packet of the QoS flow or the V2X service, and the service data adaptation protocol (SDAP) layer maps the data packet of the QoS flow or the V2X service to Data Radio Bearer (DRB), wherein the corresponding sending modes of the QoS flow or the data packets of the V2X service on one DRB are the same; or
[0246]
The service data adaptation protocol (SDAP) layer maps the QoS flow or the data packets of the V2X service to a data radio bearer (DRB), and the second determining unit determines the transmission mode corresponding to the DRB .
[0247]
12. The device according to Supplement 10, wherein:
[0248]
The second determining unit is set at the Packet Data Convergence Protocol (PDCP) layer, and is used to determine the transmission mode corresponding to the DRB, the transmission mode corresponding to the radio link control channel (RLC channel) corresponding to the DRB, or The sending mode corresponding to the logical channel corresponding to the DRB.
[0249]
13. The device according to Supplement 10, wherein:
[0250]
The second determining unit is provided in the radio link control (RLC) layer, and is used to determine the transmission mode corresponding to the radio link control channel (RLC channel) or the transmission mode corresponding to the logical channel.
[0251]
14. The device according to Supplement 10, wherein:
[0252]
The second determining unit is provided at the medium access control (MAC) layer, and is used to determine the transmission mode corresponding to a logic channel or the transmission mode corresponding to the MAC PDU.
[0253]
15. The device according to Supplement 3-14, wherein the device further comprises:
[0254]
The second sending unit, which is provided at a higher layer of the terminal device, and is used to notify the lower layer of the sending mode; or
[0255]
The marking unit is used for data packets of V2X services, and/or quality of service flow (QoS flow), and/or data radio bearer (DRB), and/or radio link control (RLC) channel, and/or logical channel The corresponding sending method is marked.
[0256]
16. The device according to any one of Supplements 3-15, wherein the device further comprises:
[0257]
The first notification unit is used to notify the network device of the sending mode.
[0258]
17. The device according to Supplement 16, wherein:
[0259]
The first notification unit uses a radio resource control (RRC) message of side link UE information, or a sidelink buffer status report (BSR), or a scheduling request (Scheduling request, SR). ) Notifying the network device of the sending mode.
[0260]
18. The device according to Supplement 1, wherein the device further comprises:
[0261]
The first setting unit, which sets the sending mode according to the instruction information used to configure or instruct the sending mode,
[0262]
Wherein, the indication information is provided by the network equipment of the core network, or provided by the network equipment of the access network, or provided by the roadside unit (RSU), or pre-configured.
[0263]
19. The device according to Supplement 18, wherein:
[0264]
The instruction information provided by the network device of the core network is used to configure the sending mode corresponding to data packets and/or QoS flows on the side link.
[0265]
20. The device according to Supplement 18, wherein:
[0266]
The indication information provided by the network device of the access network is used to configure the DRB and/or RLC channel on the side link, and/or the transmission mode corresponding to the logical channel.
[0267]
21. The device according to Supplement 18, wherein:
[0268]
The indication information provided by the network device of the access network includes the sending mode corresponding to the scheduled side link data.
[0269]
22. The device according to Supplement 18, wherein:
[0270]
The pre-configured indication information is used to configure data packets, and/or QoS flows, and/or DRB, and/or RLC channels, and/or logical channels corresponding to the transmission mode on the side link.
[0271]
23. The device according to any one of Supplementary Notes 1-22, wherein:
[0272]
The sending method is based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the content of the information contained in the data, and/or The geographic location of the terminal device is determined.
[0273]
24. The device according to Supplement 23, wherein:
[0274]
The QoS characteristics include: the priority of the data, and/or the time delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the communication range of the data;
[0275]
The content of the information contained in the data includes: road conditions, and/or environment, and/or accident information; or, includes business requests and/or feedback; or, group public information.
[0276]
25. A data sending device for vehicle communication (V2X) service, which is set in a network device and includes:
[0277]
A second generating unit, which generates instruction information for configuring or instructing the data transmission mode of the terminal device; and
[0278]
A third sending unit, which sends the instruction information to the terminal device,
[0279]
Wherein, the network device is a network device of a core network or a network device of an access network.
[0280]
26. The device according to Supplement 25, wherein:
[0281]
When the network device is a core network network device, the instruction information is used to configure the sending mode corresponding to data packets and/or QoS flows on the side link.
[0282]
27. The device according to Supplement 25, wherein:
[0283]
When the network device is a network device of an access network, the indication information is used to configure the sending mode of the DRB, and/or RLC channel, and/or logical channel on the side link.
[0284]
28. The device according to Supplement 25, wherein:
[0285]
When the network device is a network device of a core network, the indication information includes the sending mode corresponding to the scheduled side link data.
[0286]
29. A device for determining the data transmission mode in the vehicle communication (V2X) business, including:
[0287]
The first receiving unit receives the notification of the sending mode of the data of the terminal device sent by the terminal device.
[0288]
30. The device according to Supplement 29, wherein:
[0289]
The first receiving unit uses a radio resource control (RRC) message of side link UE information, or a sidelink buffer status report (BSR), or a scheduling request (Scheduling request, SR). ) Receive the notification.
[0290]
31. The device according to any one of Supplements 25-30, wherein:
[0291]
In the indication information generated by the second generating unit, or in the notification received by the first receiving unit:
[0292]
The sending method is based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the content of the information contained in the data, and/or The geographic location of the terminal device is determined.
[0293]
32. The device according to Supplement 31, wherein:
[0294]
The QoS characteristics include: the priority of the data, and/or the time delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the communication range of the data;
[0295]
The content of the information contained in the data includes: road conditions, and/or environment, and/or accident information; or, includes business requests and/or feedback; or, group public information.
[0296]
33. A communication system having network equipment and terminal equipment,
[0297]
Wherein, the network device has the device described in any one of Supplements 25-32, and the terminal device has the device described in any one of Supplements 1-24.
Claims
[Claim 1]
A data transmission device for vehicle communication (V2X) service is set in a terminal device and includes: a first generating unit, which is set in the media access control (MAC) layer of the terminal device, and the generating unit uses a protocol data The service data unit (SDU) contained in the unit (PDU) generates at least one PDU in the same manner as the corresponding transmission method; and a first transmission unit, which is set in the MAC layer and is used to send the PDU to the terminal The physical layer of the device, and notify the physical layer of the sending mode corresponding to the PDU.
[Claim 2]
The apparatus according to claim 1, wherein the transmission mode includes unicast, multicast or broadcast.
[Claim 3]
5. The apparatus according to claim 1, wherein the apparatus further comprises: a first determining unit, which is provided at an upper layer of the terminal device and used to determine the transmission mode.
[Claim 4]
The apparatus according to claim 3, wherein the first determining unit indicates a data packet (s) of the V2X service and a corresponding transmission mode of the data packet of the V2X service.
[Claim 5]
The apparatus according to claim 4, wherein the apparatus further comprises: a first mapping unit, which is provided in a packet filter of the terminal device, and the first mapping unit maps the data packet To the quality of service flow (QoS flow), where the data packets in a quality of service flow correspond to the same sending mode.
[Claim 6]
The apparatus according to claim 4, wherein the apparatus further comprises: a second mapping unit, which is provided at the service data adaptation protocol (SDAP) layer of the terminal device, and the second mapping unit converts the quality of service flow Or the data packets of the V2X service are mapped to a data radio bearer (DRB), wherein the corresponding sending modes of the quality of service flow or the data packets of the V2X service on one DRB are the same.
[Claim 7]
The apparatus according to claim 4, wherein the apparatus further comprises: a third mapping unit, which is provided at the packet data convergence protocol (PDCP) layer of the terminal device, and the third mapping unit divides the quality of service stream or The V2X service data packet is mapped to a data radio bearer (DRB), wherein the corresponding transmission mode of the service quality flow or the V2X service data packet on one DRB is the same.
[Claim 8]
5. The apparatus according to claim 1, wherein the apparatus further comprises: a second determining unit, which is provided at an access (AS) layer of the terminal device and used to determine the transmission mode.
[Claim 9]
The apparatus according to claim 8, wherein the second determining unit is set in a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, and a radio link control (RLC) layer of the terminal device Layer, or medium access control (MAC) layer, and the second determining unit determines the transmission mode.
[Claim 10]
The device according to claim 3, wherein the device further comprises: a second sending unit, which is provided at a higher layer of the terminal device and used to notify a lower layer of the sending mode; or a marking unit, For V2X service data packets, and/or quality of service flow (QoS flow), and/or data radio bearer (DRB), and/or radio link control (RLC) channel, and/or the corresponding transmission method of logical channel Mark it.
[Claim 11]
5. The apparatus according to claim 3, wherein the apparatus further comprises: a first notification unit, configured to notify a network device of the sending mode.
[Claim 12]
The apparatus according to claim 11, wherein, the first notification unit uses a radio resource control (RRC) message of side link UE information, or a sidelink buffer status report ( BSR), or a scheduling request (Scheduling request, SR) to notify the network device of the sending mode.
[Claim 13]
The device according to claim 1, wherein the device further comprises: a first setting unit, which sets the transmission mode according to instruction information used to configure or indicate the transmission mode, wherein the instruction The information is provided by the network equipment of the core network, or provided by the network equipment of the access network, or provided by the roadside unit (RSU), or pre-configured.
[Claim 14]
The apparatus according to claim 13, wherein the indication information provided by the network device of the core network is used to configure the sending mode corresponding to data packets and/or QoS flows on the side link.
[Claim 15]
The apparatus according to claim 13, wherein the indication information provided by the network device of the access network is used to configure the DRB and/or RLC channel on the side link, and/or the transmission mode corresponding to the logical channel.
[Claim 16]
The apparatus according to claim 13, wherein the indication information provided by the network device of the access network includes a sending mode corresponding to the scheduled side link data.
[Claim 17]
The apparatus according to claim 1, wherein the sending mode is based on the QoS characteristics of the data to be sent, and/or the QoS level indication, and/or the destination terminal device to which the data will be sent, and/or the The content of the information contained in the data and/or the geographic location of the terminal device are determined.
[Claim 18]
The apparatus according to claim 17, wherein the QoS characteristics include: the priority of the data, and/or the delay of the data, and/or the reliability of the data, and/or the data rate of the data, and/or the data Scope of communication; The content of the information contained in the data includes: road conditions, and/or environment, and/or accident information; or, includes business requests, and/or feedback; or, group public information.
[Claim 19]
A data transmission device for vehicle communication (V2X) service, which is set in a network device, and includes: a second generation unit, which generates indication information for configuring or instructing the transmission mode of data of a terminal device; and a third transmission unit, which Sending the instruction information to the terminal device, where the network device is a network device of a core network or a network device of an access network.
[Claim 20]
A communication system, the communication system has a network device and a terminal device, wherein the network device has the device according to claim 19, and the terminal device has the device according to any one of claims 1-18 Device.