CN109996207B

CN109996207B - Data sending method, device and computer program product

Info

Publication number: CN109996207B
Application number: CN201711476598.1A
Authority: CN
Inventors: 李明超; 曹振臻
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2021-01-29
Anticipated expiration: 2037-12-29
Also published as: CN109996207A; WO2019128860A1

Abstract

The embodiment of the invention provides a data transmission method, which comprises the following steps: the first equipment acquires configuration information; receiving first data and indication information in a first flow transmitted by a second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information; selecting a radio bearer for the second data in the first flow as the second radio bearer according to the indication information and the configuration information; transmitting the second data to the third device over the second radio bearer. Therefore, the mapping relation between the radio bearers during data transmission is established through the configuration information, and the indication information indicates the first device to select the proper radio bearer for the data transmission, so that the data transmission performance is ensured. In addition, the embodiment of the application also provides a corresponding data transmission device and related equipment.

Description

Data sending method, device and computer program product

Technical Field

The present application relates to the field of communications, and in particular, to a data transmission method, apparatus, and computer program product.

Background

At present, a cellular network-based vehicle networking communication technology is continuously developed, and a V2X communication technology has become a research hotspot of 5G; V2X communication refers to communication means between a Vehicle and other things, for example, the Vehicle can timely acquire road condition information or receive information service through Vehicle-to-Vehicle communication (V2V) or Vehicle-to-Infrastructure communication (V2I) or Vehicle-to-Pedestrian communication (V2P) or Vehicle-to-Network communication (V2N), which may be collectively referred to as V2X communication (where X represents anything).

In the V2X communication, the vehicle needs to perform data transmission, and the vehicle can not only interact with the surrounding devices through the V2X communication to exchange information such as the vehicle speed, the driving direction, the specific location, whether the emergency brake is applied, etc., but also share sensor data, video data, map data with the surrounding vehicles, etc. For example, in the context of vehicle grouping (vehicle), vehicle grouping refers to grouping a plurality of vehicles into a fleet, and relatively small distances are maintained between vehicles through interaction of control information and data information. For the head node of the platoning, the head node needs to receive data sent by the base station and then forwards the data to other member terminals in the platoning group. It is of course also possible to receive data from the member terminals and then transmit to the base station. Of course, the vehicles are sometimes required to relay data for different vehicles.

In V2X communication technology communication of a 5G cellular network, Data is carried in a flow (flow), each flow has a flow ID (flow ID), after the flow enters an access layer, there exists a Service Data Adaptation Protocol (SDAP) Protocol layer, the SDAP layer learns the correspondence between the flow ID and a Data Radio Bearer (DRB), and when the SDAP receives Data from an upper layer, the Data is placed in the corresponding DRB according to the corresponding flow ID for transmission. Because different devices are the corresponding relationship between the independently configured flow identifier and the radio bearer, the radio bearer is independently selected for data according to the corresponding relationship for data transmission. However, in actual transmission, the transmission requirement of data may change dynamically, if one device side changes the corresponding relationship adaptively to adapt to the data transmission requirement, but the device on the other side cannot sense the dynamic change in time, and still performs data transmission according to the preset corresponding relationship, which results in that the data transmission performance cannot be guaranteed; for example, the base station side and the device side both configure the corresponding relationship between the flow identifier and the radio bearer independently; in the data transmission process, as the service needs to change, the base station transfers the data in flow1 from the first radio bearer to another radio bearer for transmission, so as to ensure the data transmission performance requirement of flow1, but when the device receives the data in flow1, the device still determines that the radio bearer transmits the data in flow1 according to the preset corresponding relationship between the flow identifier and the radio bearer, and the device cannot timely sense the change of the data transmission performance in flow1, and cannot ensure the transmission quality of the data.

Disclosure of Invention

Based on the above technical problem, the present application provides a data transmission method, and the method can dynamically instruct, according to actual requirements of data transmission, a first device to select a radio bearer that meets requirements of data transmission when transmitting data, so as to ensure data transmissibility.

In order to ensure the realization and the application of the method in practical application, the application also provides a data transmission device, related equipment and a computer program product.

In a first aspect of the present application, a data transmission method is provided, including:

the first equipment acquires configuration information, wherein the configuration information is used for indicating a mapping relation between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device;

the first device receives first data and indication information in a first flow transmitted by the second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information;

the first device selects a radio bearer of the second data in the first flow as the second radio bearer according to the indication information and the configuration information;

the first device sends the second data to the third device over the second radio bearer.

With reference to the first aspect, in a first possible implementation manner, the acquiring, by the first device, the configuration information includes:

the first device acquires the configuration information by receiving a dedicated Radio Resource Control (RRC) message sent by the base station; or,

the first device acquires the configuration information by receiving system information sent by the base station; or,

the first equipment acquires the configuration information through the pre-configuration information; or,

and the first equipment acquires the configuration information through a protocol.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the configuration information includes:

the configuration information of the first radio bearer, the configuration information of the second radio bearer, and a mapping relationship between the configuration information of the first radio bearer and the configuration information of the second radio bearer; or,

an identification of the first radio bearer and a quality of service identification of the second radio bearer; or,

an identification of the first radio bearer and an identification of the second radio bearer; or

A quality of service identification of the first radio bearer and an identification of the second radio bearer.

With reference to the first or second possible implementation manner of the first aspect, in a third possible implementation manner, the selecting, by the first device, the radio bearer for the second data in the first flow as the second radio bearer according to the indication information and the configuration information includes:

the first device determines a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer according to the indication information and the configuration information;

the first device selects a radio bearer for the second data as the second radio bearer.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the determining, by the first device, a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer according to the indication information and the configuration information includes:

and the first device sets the bearing mapping relation of the first flow between the first device and the third device as the mapping relation of the first flow and the second wireless bearing according to the indication information and the configuration information.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the selecting, by the first device, the radio bearer for the second data as the second radio bearer includes:

and the first equipment acquires the second data in the first flow, and selects the radio bearer of the second data as the second radio bearer according to the mapping relation between the first flow and the second radio bearer.

With reference to the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner, the indication information is included in a header of an SDAP PDU carrying the first data.

With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the SDAP PDU includes a version number;

the first device parses the version number of the SDAP PDU;

and if the version number identifies the domain containing the indication information in the SDAP PDU, the first equipment acquires the indication information from the SDAP PDU packet header.

With reference to the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner, the second device is a base station or a terminal, and the third device is a base station or a terminal.

With reference to the first to eighth possible implementation manners of the first aspect, in a ninth possible implementation manner, when both the second device and the third device are terminals, the second device and the third device are the same device.

With reference to the first to ninth possible implementation manners of the first aspect, in a tenth possible implementation manner, the indication information is at least one of a dedicated indication symbol, a priority of the first data, a quality of service identifier, or a bearer identifier.

With reference to the first to tenth possible implementation manners of the first aspect, in an eleventh possible implementation manner, before the first device receives the first data and the indication information in the first flow transmitted by the second device through the first radio bearer, the method further includes:

and the first device sends capability indication information to the second device, wherein the capability indication information is used for identifying the capability of the first device for selecting the second radio bearer as the transmission radio bearer for the second data in the first flow according to the indication information.

A second aspect of the present application provides a data transmission apparatus, including:

an obtaining module, configured to obtain configuration information, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device;

a receiving module, configured to receive first data and indication information in a first flow transmitted by the second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information;

a selecting module, configured to select a radio bearer of the second data in the first flow as the second radio bearer according to the indication information and the configuration information;

a sending module, configured to send the second data to the third device through the second radio bearer.

With reference to the second aspect, in a first possible implementation manner, the obtaining module is specifically configured to obtain the configuration information by receiving a dedicated radio resource control RRC message sent by the base station; or,

the obtaining module is specifically configured to obtain the configuration information by receiving system information sent by the base station; or,

the obtaining module is specifically configured to obtain the configuration information through preconfigured information; or,

the obtaining module is specifically configured to obtain the configuration information through a protocol.

With reference to the second aspect, in a first possible implementation manner, in a second possible implementation manner, the configuration information includes:

A quality of service identifier of the first radio bearer and a quality of service identifier of the second radio bearer; or

With reference to the first or second possible implementation manner of the second aspect, in a third possible implementation manner, the selecting module includes:

a determining submodule, configured to determine, according to the indication information and the configuration information, a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer;

a selection submodule configured to select a radio bearer for the second data in the first stream as the second radio bearer.

With reference to the second aspect, in a third possible implementation manner, in a fourth possible implementation manner, the determining sub-module is specifically configured to set, according to the indication information and the configuration information, a bearer mapping relationship of the first flow between the first device and the third device to be a mapping relationship between the first flow and the second radio bearer.

With reference to the second aspect, in a fourth possible implementation manner, in a fifth possible implementation manner, the selecting sub-module is specifically configured to acquire the second data in the first flow, and select a radio bearer of the second data as the second radio bearer according to a mapping relationship between the first flow and the second radio bearer.

With reference to the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner, the indication information is included in a header of an SDAP PDU carrying the first data.

With reference to the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner, the SDAP PDU includes a version number;

the receiving module is further configured to parse the version number of the SDAP PDU; and if the version number identifies the domain containing the indication information in the SDAP PDU, acquiring the indication information from the SDAP PDU header.

With reference to the first to seventh possible implementation manners of the second aspect, in an eighth possible implementation manner, the second device is a base station or a terminal, and the third device is a base station or a terminal.

With reference to the first to eighth possible implementation manners of the second aspect, in a ninth possible implementation manner, when both the second device and the third device are terminals, the second device and the third device are the same device.

With reference to the first to ninth possible implementation manners of the second aspect, in a tenth possible implementation manner, the indication information is at least one of a dedicated indication symbol, a priority of the first data, a quality of service identifier, or a bearer identifier.

With reference to the first to tenth possible implementation manners of the second aspect, in an eleventh possible implementation manner, the sending module is further configured to send capability indication information to the second device, where the capability indication information is used to identify, to the second device, that the first device has a capability of selecting the second radio bearer as the radio bearer for the second data in the first flow according to the capability indication information.

A third aspect of the present application provides a first device comprising:

a processor and a memory; the memory stores computer instructions, wherein the processor is configured to perform the following steps when the computer instructions in the memory are executed:

acquiring configuration information, wherein the configuration information is used for indicating a mapping relation between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device;

receiving first data and indication information in a first flow transmitted by the second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information;

selecting a radio bearer for the second data in the first flow as the second radio bearer according to the indication information and the configuration information;

transmitting the second data to the third device over the second radio bearer.

With reference to the third aspect, in a first possible implementation manner, the obtaining configuration information includes:

acquiring the configuration information by receiving a dedicated Radio Resource Control (RRC) message sent by the base station; or,

acquiring the configuration information by receiving system information sent by the base station; or,

acquiring the configuration information through pre-configuration information; or,

and acquiring the configuration information through a protocol.

With reference to the third aspect, in a first possible implementation manner, in a second possible implementation manner, the configuration information includes:

With reference to the first or second possible implementation manner of the third aspect, in a third possible implementation manner, the selecting, according to the indication information and the configuration information, a radio bearer of the second data in the first flow as the second radio bearer includes:

determining a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer according to the indication information and the configuration information;

selecting a radio bearer for the second data as the second radio bearer.

With reference to the third aspect, in a fourth possible implementation manner, the determining, according to the indication information and the configuration information, a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer includes:

and setting the bearing mapping relation of the first flow between the first equipment and the third equipment as the mapping relation of the first flow and the second radio bearing according to the indication information and the configuration information.

With reference to the third aspect in a fourth possible implementation manner, in a fifth possible implementation manner, the selecting the radio bearer for the second data as the second radio bearer includes:

and after the second data in the first flow is acquired, selecting the radio bearer of the second data as the second radio bearer according to the mapping relation between the first flow and the second radio bearer.

With reference to the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner, the indication information is included in a header of an SDAP PDU carrying the first data.

With reference to the third aspect, in a sixth possible implementation manner, in a seventh possible implementation manner, the SDAP PDU includes a version number;

said resolving said version number of said SDAP PDU;

and if the version number identifies the domain containing the indication information in the SDAP PDU, acquiring the indication information from the SDAP PDU header.

With reference to the first to seventh possible implementation manners of the third aspect, in an eighth possible implementation manner, the second device is a base station or a terminal, and the third device is a base station or a terminal.

With reference to the first to eighth possible implementation manners of the third aspect, in a ninth possible implementation manner, when both the second device and the third device are terminals, the second device and the third device are the same device.

With reference to the first to ninth possible implementation manners of the third aspect, in a tenth possible implementation manner, the indication information is at least one of a dedicated indication symbol, a priority of the first data, a quality of service identifier, or a bearer identifier.

With reference to the first to tenth possible implementation manners of the third aspect, in an eleventh possible implementation manner, the processor is further configured to execute the following instructions:

and sending capability indication information to the second device, where the capability indication information is used to identify, to the second device, that the first device has a capability of selecting the second radio bearer as a transport radio bearer for the second data in the first flow according to the indication information.

In a fourth aspect of the present application, there is provided a computer-readable storage medium, characterized in that it comprises instructions which, when run on a first device, cause the first device to perform the data transmission method as provided above in the first aspect.

A fifth aspect of the present application provides another data transmission method, including:

a base station sends configuration information to first equipment, wherein the configuration information is used for indicating the mapping relation between a first radio bearer and a second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects the radio bearer of the second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device.

With reference to the fifth aspect, in a first possible implementation manner, the sending, by the base station, the configuration information to the first device includes:

the base station sends a Radio Resource Control (RRC) message carrying configuration information to first equipment; or,

and the base station sends system information carrying configuration information to the first equipment.

With reference to the fifth aspect, in a second possible implementation manner, when the base station is the second device, the method further includes:

the base station transmits first data and indication information in a first flow to the first equipment through the first radio bearer; wherein the indication information is used to instruct the first device to select a radio bearer for the second data in the first flow according to the configuration information.

With reference to the fifth aspect, in a third possible implementation manner, when the transmission requirement of the first flow changes, the base station further performs the following steps: the base station transmits first data and indication information in a first flow to the first device through the first radio bearer.

With reference to any one of the first to third possible implementation manners of the fifth aspect, in a fourth possible implementation manner, the indication information is included in a header of an SDAP PDU carrying the first data.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner, the SDAP PDU includes a version number; and the base station indicates the first equipment to acquire the indication information from the SDAP PDU packet header by identifying the version number identifier of the domain containing the indication information in the SDAP PDU.

A sixth aspect of the present application provides another data transmission apparatus, including:

a sending module, configured to send configuration information to a first device, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects the radio bearer of the second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

With reference to the sixth aspect, in a first optional implementation manner, the sending module is specifically configured to send a dedicated radio resource control RRC message carrying configuration information to the first device; or, the method is used for sending the system information carrying the configuration information to the first device.

With reference to the sixth aspect, in a second optional implementation manner, when the apparatus is configured in the second device, the sending module is further configured to transmit the first data and the indication information in the first flow to the first device through the first radio bearer; wherein the indication information is used to instruct the first device to select a radio bearer for the second data in the first flow according to the configuration information.

With reference to the sixth aspect, in a third optional implementation manner, when the transmission requirement of the first stream changes, the sending module further performs the following steps: transmitting first data in a first flow and indication information to the first device over the first radio bearer.

With reference to any one of the first to third optional implementation manners of the sixth aspect, in a fourth optional implementation manner, the indication information is included in a header of an SDAP PDU carrying the first data.

With reference to the sixth aspect, in a fourth optional implementation manner, in a fifth optional implementation manner, the SDAP PDU includes a version number; the sending module indicates the first device to obtain the indication information from the SDAP PDU header by specifically identifying a version number identifier of a domain including the indication information in the SDAP PDU. A seventh aspect of the present application provides a base station, including:

sending configuration information to the first device, wherein the configuration information is used for indicating a mapping relation between the first radio bearer and the second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects the radio bearer of the second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

With reference to the seventh aspect, in a first optional implementation manner, the sending configuration information to the first device includes:

sending a Radio Resource Control (RRC) message carrying configuration information to first equipment; or,

and sending system information carrying configuration information to the first equipment.

With reference to the seventh aspect, in a second optional implementation manner, when the base station is the second device, the processor is further configured to execute the following instructions:

transmitting first data in a first flow and indication information to the first device over the first radio bearer; wherein the indication information is used to instruct the first device to select a radio bearer for the second data in the first flow according to the configuration information.

With reference to the seventh aspect, in a third optional implementation manner, the processor is further configured to execute the following instructions:

monitoring whether the transmission demand of the first flow changes, and executing the instructions when the transmission demand of the first flow changes: transmitting first data in a first flow and indication information to the first device over the first radio bearer.

With reference to the first to third optional implementation manners of the seventh aspect, in a fourth optional implementation manner, the indication information is included in a packet header of an SDAP PDU carrying the first data.

With reference to the seventh aspect, in a fourth optional implementation manner, in a fifth optional implementation manner, the SDAP PDU includes a version number; the processor is further configured to execute the following instructions:

and indicating the first equipment to acquire the indication information from the SDAP PDU header by identifying the version number identifier of the domain containing the indication information in the SDAP PDU.

An eighth aspect of the present application provides a computer-readable storage medium, which is characterized by comprising instructions that, when run on a base station, cause the base station to perform the data transmission method as provided in the fifth aspect.

Compared with the prior art, the technical scheme provided by the application has the following advantages:

in the present application, a first device obtains configuration information, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device; the first device receives first data and indication information in a first flow transmitted by the second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information; that is, when receiving the indication information, the first device selects the radio bearer of the second data in the first flow as the second radio bearer according to the indication information and the configuration information, and further sends the second data to the third device through the second radio bearer. The present application relates to a method for processing a semiconductor wafer. Therefore, the mapping relation of the radio bearers on the two sides during data transmission is established through the configuration information, and dynamic mapping control of the radio bearers during data transmission is realized through the indication information, so that the first device is indicated to select the proper radio bearer for data transmission according to the actual requirement condition of the data transmission, and the data transmissibility is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a diagram illustrating an example of a practical application of the present application;

fig. 2 is a flowchart of a data transmission method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a data packet structure format of an SDAP PDU according to an embodiment of the present application;

fig. 4 is a structural diagram of a data transmission device according to an embodiment of the present application;

fig. 5 is a schematic hardware structure diagram of a first device according to an embodiment of the present disclosure;

fig. 6 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 7 is a structural diagram of another data transmission device according to an embodiment of the present application;

fig. 8 is a schematic diagram of a hardware structure of a base station according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to facilitate those skilled in the art to understand the technical solution of the present invention, a technical scenario to which the technical solution of the present application is applied is described below with reference to fig. 1. As shown in fig. 1, the scenario includes a first device UE1, a second device UE2 (base station gNB), and a third device UE2, in which the base station gNB transmits data to the first device UE1, and the first device UE1 transmits data to the second device UE 2; specifically, the base station gNB transmits the zeroth data0 in the first Flow1 to the first device UE1 through the RB11 corresponding to the first Flow1 in the initial stage, and the first device UE1 transmits the data in the first Flow to the third device UE3 through the RB31 corresponding to the first Flow 1.

When the data transmission quality requirement of the first Flow1 changes, the RB11 cannot meet the traffic transmission requirement, and at this time, the base station gNB selects a first radio bearer RB12 meeting the transmission performance for the first data1 in the first Flow1 according to the configuration information, switches the data in the first Flow from the RB11 to the RB12, and then transmits the first data1 in the first Flow1 to the first device UE1 through the RB12, and in order to ensure the data transmission performance, the base station gNB further instructs the first device UE1 to select an adapted second radio bearer having a mapping relationship with the first radio bearer RB12 for the second data2 in the first Flow1 according to the configuration information through the indication information, wherein the configuration information is used to indicate the mapping relationship between the first radio bearer and the second radio bearer, and the mapping relationship can ensure the data transmission performance when the data is transmitted in the first radio bearer and the second radio bearer, for example, RB12 between the base station gNB and the first device UE1 has a mapping relationship with RB32 between the first device UE1 and the third device UE3, namely RB12-RB 32; based on this, the first device UE1 does not use RB31 any more when subsequently transmitting the second data2 in the first stream, but transmits the second data2 through RB32 through radio bearer mapping, thereby ensuring the transmission performance of the traffic data of the first stream, wherein the second data can be understood as the first data1, and can also be understood as other data subsequently transmitted through the first stream.

The following describes a data processing method on the first device side provided by the present application.

Referring to fig. 2, a flowchart of a data transmission method provided by an embodiment of the present application is shown, where the method may include the following steps:

step 101, a first device obtains configuration information, wherein the configuration information is used for indicating a mapping relation between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device;

in this embodiment of the application, the first device refers to a terminal device, and optionally, the first device is a terminal device based on a V2X communication technology of LTE, a terminal device based on a V2X communication technology of 5G, or a vehicle-mounted terminal device; for example, the first device is a vehicle or the first device is an integrated device that may be vehicle-mounted; the second device and the third device which communicate with the first device may be base stations, or terminal devices which are the same as or similar to the first device; the base station may be a macro station, a micro base station, a repeater, a radio remote base station, or the like. Specifically, the first device may obtain the configuration information through the following several optional implementation manners:

in a first optional implementation manner, the first device obtains the configuration information by receiving a dedicated radio resource control RRC message sent by the base station; optionally, the base station and the first device transmit the configuration information in a point-to-point communication manner, so as to ensure reliability of transmission of the configuration information.

In a second optional implementation manner, the first device obtains the configuration information by receiving system information sent by the base station; optionally, the configuration information is transmitted between the base station and the first device through broadcast communication, so as to save signaling overhead.

In a third optional implementation manner, the first device obtains the configuration information through pre-configuration information; the preconfigured information may be stored in the first device, and may be generated in a factory configuration manner or a post-factory dynamic configuration manner, where the preconfigured information at least includes configuration information, and the preconfigured information may also be generated by configuring in a network signaling manner.

In a fourth optional implementation manner, the first device obtains the configuration information through a protocol. That is, the configuration information is information defined in a protocol, and the first device is a terminal device that operates based on the protocol.

In the embodiment of the present application, the configuration information may have the following several optional implementation manners:

in a first optional implementation manner, the configuration information includes:

the configuration information of the first radio bearer, the configuration information of the second radio bearer, and a mapping relationship between the configuration information of the first radio bearer and the configuration information of the second radio bearer; through the configuration information in the form, the first equipment can be more effectively controlled to configure the second radio bearer for the data in the first flow according to the mapping relation, and the data transmission performance is ensured.

The configuration information of the first Radio bearer may include at least one of PDCP (Packet Data Convergence Protocol) configuration, RLC (Radio Link Control, Radio Link failure) configuration, a logical channel identifier, a logical channel configuration, a first Radio bearer identifier, a flow identifier, a quality of service identifier, a service type identifier, and carrier frequency information corresponding to the first Radio bearer. Optionally, the first Radio Bearer identifier may be a DRB (Date Radio Bearer) identifier or an SLRB (Sidelink Radio Bearer) identifier; the QoS Identifier is capable of identifying transmission performance of the radio bearer, and may be at least one of a QCI (QoS Class Identifier) Identifier, a PPPP (ProSe Per-Packet Priority) Identifier, a reliability Identifier, a delay jitter Identifier, a transmission rate Identifier, and a transmission frequency Identifier.

Likewise, the configuration information of the second radio bearer may include at least one of a PDCP configuration, an RLC configuration, a logical channel identifier, a logical channel configuration, a second radio bearer identifier, a flow identifier, a quality of service identifier, a service type identifier, and carrier frequency information corresponding to the second radio bearer. Alternatively, the second radio bearer identity may be a DRB identity or an SLRB identity. The qos flag may identify transmission performance of the radio bearer, and may be at least one of a QCI flag, a PPPP flag, a reliability flag, a delay jitter flag, a transmission rate flag, and a transmission frequency flag. Optionally, the mapping relationship between the configuration information of the second radio bearer may be a mapping relationship between at least one of the configuration information of the first radio bearer and at least one of the configuration information of the first radio bearer. Such as a mapping of the first radio bearer identity to the second radio bearer identity.

In a second optional implementation manner, the configuration information includes:

an identification of the first radio bearer and a quality of service identification of the second radio bearer; the service quality identifier may be at least one of a QCI identifier, a PPPP identifier, a reliability identifier, a delay jitter identifier, a transmission rate identifier, and a transmission frequency identifier. Through the configuration information in the form, the first device can flexibly select the second radio bearer for the data in the first flow according to the mapping relation.

In a third optional implementation manner, the configuration information includes:

an identification of the first radio bearer and an identification of the second radio bearer.

In a fourth optional implementation manner, the configuration information includes:

a quality of service identification of the first radio bearer and a quality of service identification of the second radio bearer. The service quality identifier may be at least one of a QCI identifier, a PPPP identifier, a reliability identifier, a delay jitter identifier, a transmission rate identifier, and a transmission frequency identifier.

In this embodiment, in order to ensure the quality of data transmission, the second device transmits first data in a first Flow to the first device through the first radio bearer, and in order to ensure the data transmissibility in the first Flow, the second device is instructed by the indication information to select a second radio bearer having a mapping relationship with the first radio bearer for the data in the first Flow, and specifically, the second device transmits the first data in the first Flow1 and the indication information to the first device UE1 through the first radio bearer; correspondingly, the first device UE1 performs step 102.

102, the first device receives first data and indication information in a first flow transmitted by the second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information;

optionally, the indication information is used to instruct the first device to select a radio bearer between the first device and the third device for the second data in the first flow according to the configuration information;

in this embodiment of the application, the indication information may be encapsulated in a packet header of an SDAP PDU (Protocol Data Unit) that carries the first Data, and the first device obtains the indication information by analyzing the packet header of the SDAP PDU.

Furthermore, in order to be compatible with the traditional SDAP PDU data packet transmission processing mode, the application also provides a novel SDAP PDU data packet format, and the SDAP PDU comprises a version number; the first device parses the version number of the SDAP PDU; and if the version number identifies the domain containing the indication information in the SDAP PDU, the first equipment acquires the indication information from the SDAP PDU packet header.

The format of the SDAP PDU is illustrated by FIG. 3.

Referring to fig. 3, the format of the SDAP PDU packet is shown, the SDAP PDU including a version number; identifying whether the SDAP PDU contains the domain of the indicating information or not through different version numbers, on the basis, receiving the SDAP PDU by first equipment, analyzing the version number, then identifying whether the SDAP PDU contains the domain of the indicating information or not on the basis of the version number, and if so, analyzing the indicating information from the SDAP PDU packet header by the first equipment; otherwise, the first device does not need to parse the SDAP PDU.

Specifically, the indication information may be at least one of a dedicated indication symbol, a priority of the first data, a quality of service identifier, or a bearer identifier. For example, the indication information is specifically a dedicated indication symbol, and the dedicated indication symbol occupies a bit field of at least 1bit, and takes a value as a specified value, for example, takes a value of 1, so as to indicate that the first device selects a radio bearer for the second data in the first flow according to the configuration information. For another example, the indication information is specifically a qos identifier of the first data, for example, PPPP or QCI, or priority, and the second device may encapsulate the qos identifier or priority of the first data in the first flow as the indication information in scheduling signaling, and the scheduling signaling sends the indication information to the first device.

It should be noted that, transmitting the indication information through the SDAP PDU is only one implementation form listed in the embodiments of the present application, and the indication information may also be included in PDUs or information of other protocol layers, such as MAC PDU, RLC PDU, PDCP PDU, PDU of the first protocol layer, or sa (scheduling assignment) of the physical layer. The first protocol layer refers to a protocol layer above the PDCP, and the first protocol layer may be located at or above the access layer. When included in the MAC PDU, the indication information may be a MAC CE (MAC Control Element). The indication information may also be carried in RRC signaling or nas (non Access stratum) signaling. As an implementation, the indication information may be included in the configuration information either explicitly or implicitly.

It should be further noted that, the first terminal may obtain the first data in the first flow and the indication information simultaneously; first, first data in the first stream is acquired, and then the indication information is acquired; or the indication information may be acquired first, and then the first data in the first stream may be acquired.

In this implementation, the second device only changes the transmission path of the first flow, that is, the first flow is mapped from one first radio bearer to another first radio bearer, in this case, the second device instructs, through the indication information, the first device to perform bearer mapping according to the configuration information, so as to ensure the transmission performance of the data in the first flow; correspondingly, the first device executes

steps

103 and 104 only after receiving the indication information, otherwise, the first device may perform data transmission in a conventional manner, that is, perform data transmission according to a preset correspondence between "stream and radio bearer".

In addition, in a specific implementation, in order to ensure reliability of data transmission, the first device may actively report its capability indication information to the second device, or the first device may also send the capability indication information of the first device to the second device in response to an inquiry request of the second device, based on which, before the first device performs step 102, the first device sends the capability indication information to the second device, where the capability indication information is used to identify, to the second device, that the first device has a capability of selecting the second radio bearer as the radio bearer for transmission according to the indication information for the second data in the first flow. Correspondingly, after receiving the capability indication information of the first device, the second device sends the indication information to the first device, so as to ensure the implementation of the bearer mapping.

Step 103, the first device selects a radio bearer of the second data in the first flow as the second radio bearer according to the indication information and the configuration information;

in this embodiment of the application, the second data may include first data in the first stream sent by the first device, or may not include the first data, but refer to other data that is determined by the first device to need to be transmitted through the first stream after receiving the indication information. For example, the second data may be data received by the first device that the second device subsequently transmitted over the first stream; for example, the first device receives the first data1 and the indication information in the first stream sent by the second device through the first radio bearer, and then the second device continues to send the second data2 in the first stream to the first device through the first radio bearer, and then the first device acquires the second data2 in the first stream. Here, the second data does not mean any data, but means data transmitted by the first stream. For another example, the second data may be data that the first device generates by itself and needs to be transmitted through the first stream, and data in the first stream that the first device acquires from an upper layer (for example, an application layer above an access layer). The second data may also be data received by the first device from a fourth device.

It should be noted that, in the embodiment of the present application, the first data may refer to data of a user plane, or may be data of a control plane; the second data may refer to data of a user plane or data of a control plane.

In a specific implementation, the first device determines, according to the indication information and the configuration information, a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer; the first device selects a radio bearer for the second data as the second radio bearer.

For example: the configuration information acquired by the first device records that a mapping relationship exists between the first radio bearer RB12 and the second radio bearer RB32, and then after receiving the second data of the first stream, the first device determines, according to the configuration information and the indication information, the radio bearer of the first stream between the first device and the third device as the second radio bearer RB32 corresponding to the first radio bearer RB12, that is, determines that the radio bearer of the first stream between the first device and the third device is specifically RB 32; the first device then acquires the second data in the first stream and selects the radio bearer for the second data as the second radio bearer RB 32.

It should be noted that, in the embodiment of the present application, the first Radio Bearer may be in any form, such as a DRB, an SRB (signaling Radio Bearer), or an SLRB. Similarly, the second radio bearer may be any type such as DRB, SRB, or SLRB.

Further, the first device sets a bearer mapping relationship of the first flow between the first device and the third device to a mapping relationship between the first flow and the second radio bearer according to the indication information and the configuration information. That is, the first device sets a mapping relationship, specifically a mapping relationship between the first flow and the second radio bearer, for the transmission path of the first flow between the first device and the third device according to the indication information and the configuration information, and based on this, after the first device acquires the second data in the first flow, the first device selects the radio bearer of the second data as the second radio bearer according to the mapping relationship between the first flow and the second radio bearer.

And step 104, the first device sends the second data to the third device through the second radio bearer.

After the first device selects a radio bearer, specifically a second radio bearer, for the second data in the first stream in step 103, the first device transmits the second data to the third device through the second radio bearer, so as to ensure the data transmission performance. It should be noted here that, in the embodiment of the present application, the second device and the third device may be independent devices, or may be the same device; for example, in practical applications, if the second device and the third device in the embodiment of the present application are both terminals, the second device and the third device refer to the same device. That is, the second device sends the first data in the first flow to the first device, and instructs the first device to select the radio bearer for the second data in the first flow according to the configuration information through the indication information; the first device sends the second data to the second device through the second radio bearer when acquiring the second data of the first stream.

In the embodiment of the application, a mapping relation between radio bearers meeting data transmission performance during data transmission through the first device is established through the configuration information, and in an actual transmission process, the second device can dynamically instruct the first device to select the radio bearer meeting the data transmission performance for the data in the first stream according to the configuration information in real time through the indication information, the first device selects the radio bearer meeting the data transmission performance for the data in the first stream according to the indication information and the configuration information during the data transmission process, and performs data transmission through the selected radio bearer, thereby ensuring the data transmission performance. In the conventional technology, a mapping relationship between a flow and a radio bearer is established only on different transmission sides, and no matter which device is transmitting data, the radio bearer is selected for the data in the flow for transmission only according to the pre-configured mapping relationship between the flow and the radio bearer; compared with the prior art, the technical scheme provided by the embodiment of the application establishes the mapping relation between the radio bearers across the transmission sides through the configuration information, lays a data foundation for dynamically adjusting the radio bearers according to the actual transmission of the data service, can realize the dynamic mapping of the radio bearers through the indication information, and ensures that the data transmission meets the service performance.

The present invention also provides a data transmission apparatus corresponding to the method shown in fig. 2, and the apparatus 400 is described below with reference to fig. 4. Referring to fig. 4, which shows a block diagram of a data transmission apparatus according to an embodiment of the present invention, the apparatus 400 includes:

an obtaining module 401, configured to obtain configuration information, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between the first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device;

a receiving module 402, configured to receive first data and indication information in a first flow transmitted by the second device through the first radio bearer; wherein the indication information is used for indicating the first device to select a radio bearer for second data in the first flow according to the configuration information;

a selecting module 403, configured to select a radio bearer of the second data in the first flow as the second radio bearer according to the indication information and the configuration information;

a transmission module 404, configured to send the second data to the third device through the second radio bearer.

In an optional implementation manner, the obtaining module is specifically configured to obtain the configuration information by receiving a dedicated radio resource control RRC message sent by the base station; or,

In an optional implementation manner, the configuration information includes:

In an optional implementation manner, the selecting module includes:

In an optional implementation manner, the determining sub-module is specifically configured to set, according to the indication information and the configuration information, a bearer mapping relationship of the first flow between the first device and the third device to be a mapping relationship between the first flow and the second radio bearer.

In an optional implementation manner, the selecting sub-module is specifically configured to acquire the second data in the first flow, and select a radio bearer of the second data as the second radio bearer according to a mapping relationship between the first flow and the second radio bearer.

In an optional implementation manner, the indication information is included in a header of an SDAP PDU carrying the first data.

In an alternative implementation, the SDAP PDU includes a version number;

In an optional implementation manner, the second device is a base station or a terminal, and the third device is a base station or a terminal.

In an optional implementation manner, when both the second device and the third device are terminals, the second device and the third device are the same device.

In an optional implementation manner, the indication information is at least one of a dedicated indicator, a priority of the first data, a quality of service identifier, or a bearer identifier.

In an optional implementation manner, the sending module is further configured to send capability indication information to the second device, where the capability indication information is used to identify, to the second device, that the first device has a capability of selecting the second radio bearer as the radio bearer for the second data in the first flow according to the indication information.

The present invention also provides a first apparatus corresponding to the method shown in fig. 2, and the first apparatus 500 is described below with reference to fig. 5. Referring to fig. 5, which shows a block diagram of a first device according to an embodiment of the present invention, fig. 5 only shows a part of the structure of the first device 500, and the first device 500 includes:

radio Frequency (RF) circuitry 510, memory 520, input unit 530, display unit 540, sensor 550, audio circuitry 560, WiFi module 570, processor 580, and power supply 590. Those skilled in the art will appreciate that the configuration of the first device shown in fig. 5 does not constitute a limitation of the first device and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

The following specifically describes each constituent component of the first apparatus with reference to fig. 5:

RF circuitry 510 may be used to transmit or receive data;

the memory 520 may be used to store software programs and modules, and the processor 580 may execute various functional applications and data processing of the mobile device by operating the software programs and modules stored in the memory 520. The memory 520 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the mobile device, and the like. Further, the memory 520 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 530 may be used to receive an operation instruction of a user and generate a key signal input related to user setting and function control of the first device 500. Specifically, the input unit 530 may include a touch panel 531 and other input devices 532. The touch panel 531, which may also be referred to as a touch screen, may collect touch operations (e.g., operations of a user on or near the touch panel 531 by using any suitable object or accessory such as a finger or a stylus) of a user on or near the touch panel 531, and drive corresponding connection terminals according to a preset program. Alternatively, the touch panel 531 may include two parts, a touch detection terminal and a touch controller. The touch detection terminal detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing terminal, converts it into touch point coordinates, and then provides the touch point coordinates to the processor 580, and can receive and execute commands from the processor 580. In addition, the touch panel 531 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. Optionally, the input unit 530 may further include other input devices 532. Other input devices 532 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 540 may be used to display an interface. The Display unit 540 may include a Display panel 541, and optionally, the Display panel 541 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 531 can cover the display panel 541, and when the touch panel 531 detects a touch operation on or near the touch panel 531, the touch panel can transmit the touch operation to the processor 1180 to determine the type of the touch event, and then the processor 580 can provide a corresponding visual output on the display panel 1141 according to the type of the touch event. Although in fig. 5, the touch panel 531 and the display panel 541 are implemented as two separate components to implement the input and output functions of the mobile device, in some embodiments, the touch panel 531 and the display panel 541 may be integrated to implement the input and output functions of the mobile device.

The first device 500 may also include at least one sensor 550.

Audio circuitry 560, speaker 561, and microphone 562 may provide an audio interface between a user and the mobile device. The audio circuit 560 may transmit the electrical signal converted from the received audio data to the speaker 561, and convert the electrical signal into a sound signal by the speaker 561 for output; on the other hand, the microphone 562 converts the collected sound signals into electrical signals, which are received by the audio circuit 560 and converted into audio data, which are then processed by the audio data output processor 580, and then sent to, for example, another mobile device via the camera 510, or output to the memory 520 for further processing.

The WiFi module 570 may be used for communication.

The processor 580 is the control center of the mobile device, connects various parts of the entire mobile device using various interfaces and lines, performs various functions of the mobile device and processes data by running or executing software programs and/or modules stored in the memory 520 and calling data stored in the memory 520, thereby monitoring the mobile device as a whole. Alternatively, processor 580 may include one or more processing units; preferably, the processor 580 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 580. Optionally, the processor 580 may further include a function module such as display control.

The first device 500 further includes a power supply 590 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 580 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown, the first device 500 may further include a camera, a bluetooth module, etc., which are not described in detail herein.

In this embodiment of the present invention, the processor 580 included in the first device further has the following functions:

transmitting the second data to the third device over the second radio bearer.

In an optional implementation manner, the obtaining the configuration information includes:

and acquiring the configuration information through a protocol.

In an optional implementation manner, the configuration information includes:

In an optional implementation manner, the selecting, according to the indication information and the configuration information, a radio bearer of the second data in the first flow as the second radio bearer includes:

selecting a radio bearer for the second data as the second radio bearer.

In an optional implementation manner, the determining, according to the indication information and the configuration information, a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer includes:

In an optional implementation manner, the selecting the radio bearer for the second data as the second radio bearer includes:

In an alternative implementation, the SDAP PDU includes a version number;

said resolving said version number of said SDAP PDU;

In an alternative implementation, the processor is further configured to execute the following instructions:

In addition, an embodiment of the present application also provides a computer-readable storage medium, which includes instructions that, when executed on a first device, cause the first device to execute the data transmission method shown in fig. 1.

The embodiment of the present application further provides another data transmission method, which is applied to the base station side and is described below with reference to fig. 6.

Referring to fig. 6, which shows a flowchart of another data transmission method provided in the embodiment of the present application, the method may include the following steps:

601, the base station sends configuration information to the first device, wherein the configuration information is used for indicating a mapping relationship between a first radio bearer and a second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects the radio bearer of the second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

In the embodiment of the present application, two alternative implementations are provided as to how the base station sends the configuration information to the first device, which are respectively as follows:

in an optional implementation manner, the sending, by the base station, the configuration information to the first device includes:

the base station sends a Radio Resource Control (RRC) message carrying configuration information to first equipment;

in another optional implementation manner, the sending, by the base station, the configuration information to the first device includes:

In practical applications, when a base station needs to perform data transmission with a first device, that is, if the base station is the second device, the method may further include the following steps (see the dotted line portion shown in fig. 6):

step 602, the base station transmits first data and indication information in a first flow to the first device through the first radio bearer; wherein the indication information is used to instruct the first device to select a radio bearer for the second data in the first flow according to the configuration information.

More specifically, in order to be compatible with the conventional data transmission method and reduce unnecessary mapping operations, in this embodiment of the present application, when the transmission quality requirement of the first stream changes, the base station specifically performs the following steps: the base station transmits first data and indication information in a first flow to the first device through the first radio bearer. That is, the base station instructs the first device to perform the radio bearer mapping operation only if the transmission quality requirement of the first stream changes.

Optionally, the indication information may be included in a header of an SDAP PDU carrying the first data, and transmitted through an SDAP PDU data packet. Optionally, the SDAP PDU includes a version number; and the base station indicates the first equipment to acquire the indication information from the SDAP PDU packet header by identifying the version number identifier of the domain containing the indication information in the SDAP PDU.

According to the method provided by the embodiment of the application, the base station sends the configuration information to the first equipment, the mapping relation between the radio bearers across the transmission sides is established through the configuration information, and a data base is established for the first equipment to dynamically carry out the radio bearers according to the data transmission requirements when carrying out data transmission on the basis, so that the first equipment can respond to the dynamic change of the data transmission requirements in time when carrying out data transmission, a proper radio bearer is dynamically selected, and the data transmission quality requirement is met.

Corresponding to the method shown in fig. 6, an embodiment of the present application further provides a data transmission apparatus. The apparatus 700 is explained below with reference to fig. 7.

Referring to fig. 7, which shows a block diagram of another data transmission apparatus provided in an embodiment of the present invention, the apparatus 700 includes:

a sending module 701, configured to send configuration information to a first device, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects the radio bearer of the second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

In an optional implementation manner, the sending module is specifically configured to send a dedicated radio resource control RRC message carrying configuration information to the first device; or, the method is used for sending the system information carrying the configuration information to the first device.

In an optional implementation manner, when the apparatus is configured in the second device, the sending module is further configured to transmit the first data and the indication information in the first flow to the first device through the first radio bearer; wherein the indication information is used to instruct the first device to select a radio bearer for the second data in the first flow according to the configuration information.

In an optional implementation manner, when the transmission demand of the first stream changes, the sending module further performs the following steps: transmitting first data in a first flow and indication information to the first device over the first radio bearer.

In an alternative implementation, the SDAP PDU includes a version number; the sending module indicates the first device to obtain the indication information from the SDAP PDU header by specifically identifying a version number identifier of a domain including the indication information in the SDAP PDU. For details of the implementation of the apparatus shown in fig. 7, please refer to the description of the method embodiment shown in fig. 6, which is not repeated herein.

Corresponding to the method shown in fig. 6, an embodiment of the present application further provides a base station. The base station 800 is explained below with reference to fig. 8.

Referring to fig. 8, which shows a schematic structural diagram of a base station 800, the base station 800 may include:

a processor 801, a memory 802, a network interface 803, a bus system 804.

The bus system 804 is used for connecting the processor 801, the memory 802 and the network interface 803.

The network interface 803 is used for implementing communication connection between the base station and other network devices. The network interface 803 may be implemented by an optical transceiver, an electrical transceiver, a wireless transceiver, or any combination thereof. For example, the optical transceiver may be a small form-factor pluggable (SFP) transceiver, an enhanced SFP transceiver, or a 10Gigabit SFP transceiver. The electrical transceiver may be an Ethernet (Ethernet) Network Interface Controller (NIC). The wireless transceiver may be a Wireless Network Interface Controller (WNIC).

The memory 802 is used to store program instructions and data. The memory 802 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a hard disk (english: hard disk drive, abbreviated: HDD) or a solid-state drive (english: SSD); the memory may also comprise a combination of memories of the kind described above.

The processor 801 is a Central Processing Unit (CPU), or a combination of a CPU and a hardware chip. The hardware chip can be one or more of the following combinations: an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a Complex Programmable Logic Device (CPLD), and a Network Processor (NP). The processor 801 is configured to read the program instructions and data stored in the memory 802, and perform the following operations:

For details of the implementation of the base station shown in fig. 8, please refer to the description in the embodiment of the method shown in fig. 6, which is not repeated herein.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A method of data transmission, comprising:

2. The method of claim 1, wherein the first device obtains configuration information, comprising:

the first equipment acquires the configuration information by receiving a dedicated Radio Resource Control (RRC) message sent by a base station; or,

3. The method according to claim 1 or 2, wherein the configuration information comprises:

4. The method according to any one of claims 1 to 2, wherein the selecting, by the first device, the radio bearer for the second data in the first flow as the second radio bearer according to the indication information and the configuration information comprises:

the first device selects a radio bearer for the second data in the first flow as the second radio bearer.

5. The method according to claim 4, wherein the first device determines, according to the indication information and the configuration information, a corresponding radio bearer of the first flow between the first device and a third device as the second radio bearer corresponding to the first radio bearer, including:

6. The method of claim 5, wherein the selecting, by the first device, the radio bearer for the second data as the second radio bearer comprises:

7. The method of claim 1, wherein the indication information is included in a header of an SDAP PDU carrying the first data.

8. The method of claim 7 wherein the SDAP PDU includes a version number;

the first device parses the version number of the SDAP PDU;

9. The method of claim 1, wherein the second device is a base station or a terminal, and wherein the third device is a base station or a terminal.

10. The method according to claim 1, wherein when the second device and the third device are both terminals, the second device and the third device are the same device.

11. The method of claim 1, wherein the indication information is at least one of a dedicated indicator, a priority of the first data, a quality of service identifier, or a bearer identifier.

12. The method of claim 1, wherein before the first device receives the first data and the indication information in the first stream transmitted by the second device over the first radio bearer, the method further comprises:

and the first device sends capability indication information to the second device, wherein the capability indication information is used for identifying the capability of the first device for selecting the second radio bearer as the radio bearer for the second data in the first flow according to the indication information.

13. A data transmission apparatus, comprising:

an obtaining module, configured to obtain configuration information, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; wherein the first radio bearer belongs to a radio bearer between a first device and a second device; the second radio bearer belongs to a radio bearer between the first device and a third device;

14. The apparatus according to claim 13, wherein the obtaining module is specifically configured to obtain the configuration information by receiving a dedicated radio resource control RRC message sent by a base station; or,

15. The apparatus according to claim 13 or 14, wherein the configuration information comprises:

16. The apparatus according to any one of claims 13 to 14, wherein the selection module comprises:

17. The apparatus according to claim 16, wherein the determining sub-module is specifically configured to set, according to the indication information and the configuration information, a bearer mapping relationship of the first flow between the first device and a third device to a mapping relationship between the first flow and the second radio bearer.

18. The apparatus according to claim 17, wherein the selecting sub-module is specifically configured to obtain the second data in the first flow, and select the radio bearer of the second data as the second radio bearer according to a mapping relationship between the first flow and the second radio bearer.

19. The apparatus of claim 13, wherein the indication information is included in a header of an SDAP PDU carrying the first data.

20. The apparatus of claim 19, wherein the SDAP PDU comprises a version number;

21. The apparatus of claim 13, wherein the second device is a base station or a terminal, and the third device is a base station or a terminal.

22. The apparatus according to claim 13, wherein when the second device and the third device are both terminals, the second device and the third device are the same device.

23. The apparatus of claim 13, wherein the indication information is at least one of a dedicated indicator, a priority of the first data, a quality of service identifier, or a bearer identifier.

24. The apparatus of claim 13, wherein the sending module is further configured to send capability indication information to the second device, and the capability indication information is used to identify, to the second device, that the first device is capable of selecting the second radio bearer as the radio bearer for the second data in the first flow according to the capability indication information.

25. A computer-readable storage medium comprising instructions which, when run on a first device, cause the first device to perform the data transmission method of any one of claims 1 to 12.

26. A method of data transmission, comprising:

a base station sends configuration information to first equipment, wherein the configuration information is used for indicating the mapping relation between a first radio bearer and a second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects a radio bearer of second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

27. The method of claim 26, wherein the base station sends configuration information to the first device, and wherein the configuration information comprises:

the base station sends a special Radio Resource Control (RRC) message carrying configuration information to first equipment; or,

28. The method of claim 26, wherein if the base station is the second device, the method further comprises:

29. The method of claim 26, wherein the base station performs the following steps when the transmission requirement of the first stream changes: the base station transmits first data and indication information in a first flow to the first device through the first radio bearer.

30. The method according to any of claims 26 to 29, wherein the indication information is included in a header of an SDAP PDU carrying the first data.

31. The method of claim 30 wherein the SDAP PDU includes a version number; and the base station indicates the first equipment to acquire the indication information from the SDAP PDU packet header by identifying the version number identifier of the domain containing the indication information in the SDAP PDU.

32. A data transmission apparatus, comprising:

a sending module, configured to send configuration information to a first device, where the configuration information is used to indicate a mapping relationship between a first radio bearer and a second radio bearer; when receiving first data and indication information in a first flow transmitted by a second device through a first radio bearer, the first device selects a radio bearer of second data in the first flow as a second radio bearer according to the indication information and the configuration information, and sends the second data to a third device through the second radio bearer;

33. The apparatus according to claim 32, wherein the sending module is specifically configured to send a dedicated radio resource control RRC message carrying the configuration information to the first device; or, the method is used for sending the system information carrying the configuration information to the first device.

34. The apparatus of claim 32, wherein the sending module, when configured in the second device, is further configured to transmit the first data and the indication information in the first flow to the first device through the first radio bearer; wherein the indication information is used to instruct the first device to select a radio bearer for the second data in the first flow according to the configuration information.

35. The apparatus according to claim 34, wherein the sending module, when the transmission requirement of the first stream changes, further performs the steps of: transmitting first data in a first flow and indication information to the first device over the first radio bearer.

36. The apparatus of any of claims 32 to 35, wherein the indication information is included in a header of an SDAP PDU carrying the first data.

37. The apparatus of claim 36 wherein the SDAP PDU includes a version number; the sending module is specifically configured to instruct the first device to obtain the indication information from the SDAP PDU header by identifying a version number identifier of a domain including the indication information in the SDAP PDU.

38. A computer readable storage medium comprising instructions which, when run on a base station, cause the base station to perform the data transmission method of any one of claims 26 to 31.