CN113452487B

CN113452487B - Data transmission method and device

Info

Publication number: CN113452487B
Application number: CN202010210405.3A
Authority: CN
Inventors: 韩立锋
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2022-09-13
Anticipated expiration: 2040-03-25
Also published as: CN113452487A; WO2021190233A1

Abstract

The embodiment of the application provides a data transmission method and a device, wherein the method comprises the following steps: and receiving target data in at least one Radio Bearer (RB), wherein the target data in the at least one RB is data of a target service. By adopting the embodiment of the application, the reliability of data transmission can be improved.

Description

Data transmission method and device

Technical Field

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

Background

In a communication system, data transmission is required between a network device and a terminal device to achieve the purpose of communication, however, when the reliability of data transmission between the network device and the terminal device is not high, a delay or loss of transmitted data may occur, thereby affecting the quality of communication, and thus the reliability of data transmission is a problem to be solved urgently.

Disclosure of Invention

The embodiment of the application provides a data transmission method and device, which are used for improving the reliability of terminal equipment in the aspect of data transmission.

In a first aspect, an embodiment of the present application provides a data transmission method, which is applied to a terminal device, and the method includes:

and receiving target data in at least one RB, wherein the target data in the at least one RB is data of a target service.

In a second aspect, an embodiment of the present application provides a data transmission apparatus, which is applied to a terminal device, where the apparatus includes:

a communication unit, configured to receive target data in at least one RB, where the target data in the at least one RB is data of a target service.

In a third aspect, an embodiment of the present application provides a terminal device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing steps in the method according to the first aspect of the embodiment of the present application.

In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the method according to the first aspect of the present application.

In a fifth aspect, the present application provides a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps described in the method according to the first aspect of the present application. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present application, the target data in the at least one RB is received, and since the content of the target data transmitted by the network device through the at least one RB is the same, the terminal device receives the target data in the at least one RB, which is beneficial to improving the reliability of data transmission.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a data transmission mode provided in an embodiment of the present application;

fig. 2 is a schematic diagram of another mode of data transmission provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of another data transmission mode provided by an embodiment of the present application;

fig. 4 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

FIG. 5 is a diagram of a protocol stack provided by an embodiment of the application;

FIG. 6 is a diagram of another protocol stack provided by an embodiment of the application;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a data transmission device according to an embodiment of the present application.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different elements and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

For example, please refer to fig. 1 to fig. 3, where fig. 1 to fig. 3 are schematic diagrams of data transmission modes provided in an embodiment of the present application, and the data transmission modes shown in fig. 1 to fig. 3 are all that a network device transmits data to a terminal device through a Radio Bearer (RB). It should be understood that the forms and the numbers of the network devices and the terminal devices shown in fig. 1 to fig. 3 are only used for example, and do not limit the embodiments of the present application.

The data transmission mode in the embodiment of the present application may be applied to different network architectures, including but not limited to a relay network architecture, a dual link network architecture, a Vehicle-to-event (V2X) network architecture, and the like.

The data transmission mode in this embodiment may be applied to a global system for mobile Communication (CSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a Worldwide Interoperability for Microwave Access (WiMAX) system, a Long Term Evolution (LTE) system, a 5G communication system (e.g., new radio, NR)), a communication system in which multiple communication technologies are integrated (e.g., a communication system in which an LTE technology and an NR technology are integrated), or a communication system in which subsequent evolution progresses.

The terminal device in the embodiment of the application is a device with a wireless communication function, and can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in smart home (smart home), and the like. The terminal device may also be a handheld device with wireless communication capabilities, a vehicle mounted device, a wearable device, a computer device or other processing device connected to a wireless modem, etc.

The network device in the embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a base station function in a 3G network includes a node b (nodeb), apparatuses for providing a base station function in a 4G network include evolved node bs (enbs), which, in a Wireless Local Area Network (WLAN), the devices providing the base station function are Access Point (AP), gNB providing the base station function in New Radio (NR), and node B for continuing evolution (ng-eNB), the gNB and the terminal communicate with each other by adopting NR technology, the ng-eNB and the terminal communicate with each other by adopting E-UTRA (evolved Universal Terrestrial Radio Access) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.

In fig. 1, an RB connection is established between a network device and a terminal device, thereby implementing data transmission. In fig. 1, the Radio Bearer directly established between the network device 2 and the terminal device is a Data Radio Bearer (DRB), which is a Data Radio Bearer in a unicast manner. The Radio Bearer directly established between the network device 3 and the terminal device is a Point-to-Multipoint Radio Bearer (MRB) for carrying Multicast or Broadcast Service (MBS) Service.

In fig. 2, an RB connection is established between a network device and a terminal device, thereby implementing data transmission. In fig. 2, the radio bearers respectively established by the network device 2 and the network device 3 with the terminal device are MRBs.

In fig. 3, an RB connection is established between a network device and a terminal device, thereby implementing data transmission. In fig. 3, the radio bearers established by the network device 2 and the terminal device are DRB and MRB.

Currently, communication networks allow network devices to transmit data using at least one of unicast, multicast, and broadcast data transmission modes. Unicast, i.e. a network device can only transmit data traffic to one terminal device, and multicast or broadcast, i.e. a network device can transmit data traffic to multiple terminal devices simultaneously. However, when data transmission is performed by unicast, the transmission function of the wireless air interface includes a Hybrid Automatic Repeat reQuest (HARQ) function, which causes additional overhead, and when data transmission is performed by multicast or broadcast, the transmission function of the wireless air interface does not include the HARQ function, which cannot meet the requirement of high reliability of new services (e.g., internet of vehicles, internet of things, etc.).

Referring to fig. 4, fig. 4 is a schematic flow chart of a data transmission method according to an embodiment of the present application, including the following steps:

step 401: and receiving target data in at least one RB, wherein the target data in the at least one RB is data of a target service.

Wherein the target service comprises one or more services.

Wherein the content of the target data transmitted by the network device in each RB may be the same.

Wherein the target data comprises one or more data packets.

For example, if the target service includes 3 services (service 1, service 2, and service 3), there are 3 RBs (RB1, RB2, and RB3), the data to be transmitted corresponding to service 1 includes 2 packets (#11 and #12), the data to be transmitted corresponding to service 2 includes 2 packets (#21 and #22), and the data to be transmitted corresponding to service 3 includes 3 packets (#31, #32, and #33), the target data is packets #11, #12, #21, #22, #31, #32, and #33, and the target data in RB1, RB2, and RB3 is all packets #11, #12, #21, #22, #31, #32, and # 33.

The type of each RB in at least one RB may be the same or different, and is not limited herein.

Among them, the types of RB are DRB and MRB, for example.

Each cell includes at least one RB, and if there is only one RB in a cell, the only one RB may be a DRB or an MRB; if the cell includes a plurality of RBs, the cell may include one DRB and a plurality of MRBs, or may include a plurality of MRBs.

The target data in each RB may be all data of the target service or may be partial data of the target service.

For example, if the network device needs to transmit 5 data packets (#1, #2, #3, #4, and #5) of the target service, the data amount of each data packet is 100M, and the maximum data amount that can be transmitted in the RB is 400M, the 5 data packets are transmitted twice, that is, the data packets #1, #2, #3, and #4 are transmitted first, and then the data packet #5 is transmitted, the RB transmits the target data #1, #2, #3, and #4 to the terminal device first, and then transmits the target data #5 to the terminal device.

For example, if the network device needs to transmit 3 packets (#1, #2 and #3) of the target service, the data size of each packet is 100M, and the maximum data size transmittable in the RB is 400M, the RB can transmit 300M of target data to the terminal device at a time.

It can be seen that, in the embodiment of the present application, the target data in the at least one RB is received, and since the target data transmitted by the network device through the at least one RB is the same, the terminal device receives the target data in the at least one RB, which is beneficial to improving the reliability of data transmission.

In one implementation of the present application, the at least one RB is a different type of RB in the same cell;

or, the at least one RB is an RB of the same type in different cells;

alternatively, the at least one RB is a different type of RB in a different cell.

One RB may exist in one cell, or a plurality of RBs may exist in the cell.

When the data transmission method of the present application is applied to the data transmission mode shown in fig. 1, the RB used for transmitting the target data in the serving cell is DRB, and the RB used for transmitting the target data in the neighboring cell is MRB.

When the data transmission method of the present application is applied to the data transmission mode shown in fig. 2, the RB used for transmitting the target data in the serving cell is MRB, and the RB used for transmitting the target data in the neighboring cell is MRB.

When the data transmission method of the present application is applied to the data transmission mode shown in fig. 3, the RB used for transmitting the target data in the serving cell is DRB, and the RB used for transmitting the target data in the neighboring cell is MRB.

One or more neighbor cells may be used.

It can be seen that, in the embodiment of the present application, at least one RB may be at least one of different types of RBs in the same cell, the same type of RB in different cells, and different types of RBs in different cells, and the at least one RB may be applied to different communication scenarios, which is beneficial to improving the flexibility of the terminal device.

In an implementation manner of the present application, the at least one RB includes at least one of a primary RB and a secondary RB.

Wherein the primary RB may be one of the at least one RB.

Wherein, there may be only one auxiliary RB or a plurality of auxiliary RBs.

The primary RB may be a DRB or an MRB.

In different data transmission modes, the primary RB may be the same or different.

The primary RB may be configured by the network device, may be default by the terminal device, may be determined by the terminal device based on the priority of the RB, or may be determined by the terminal device based on the communication quality of the RB.

It can be seen that, in the embodiment of the present application, dividing at least one RB into a main RB and an auxiliary RB is beneficial to a terminal device to deactivate the auxiliary RB and activate the auxiliary RB based on a reliability requirement on target data, and is beneficial to reducing complexity of the terminal device in terms of target data reception.

In one implementation of the present application, the primary RB is configured by a network device; or, the primary RB is default for the terminal device, the primary RB is an RB used for transmitting the target data in a serving cell, and the secondary RB is an RB used for transmitting the target data in an adjacent cell.

When the data transmission method of the present application is applied to the data transmission mode shown in fig. 1, an RB used for transmitting target data in a serving cell is a DRB, and an RB used for transmitting target data in an adjacent cell is an MRB, and if the primary RB is configured by a network device, the DRB may be a primary RB, the MRB is a secondary RB, or the MRB may be a primary RB, and the DRB is a secondary RB; if the primary RB is default by the terminal equipment, the DRB is the primary RB, and the MRB is the secondary RB.

When the data transmission method of the present application is applied to the data transmission mode shown in fig. 2, an RB used for transmitting target data in a serving cell is an MRB, and an RB used for transmitting target data in an adjacent cell is an MRB, if the primary RB is configured by a network device, the MRB in the serving cell may be the primary RB, the MRB in the adjacent cell may be the secondary RB, or the MRB in the adjacent cell may be the primary RB, and the MRB in the serving cell may be the secondary RB; if the primary RB is defaulted by the terminal device, the MRB in the serving cell is the primary RB, and the MRB in the neighboring cell is the secondary RB.

When the data transmission method of the present application is applied to the data transmission mode shown in fig. 3, RBs used for transmitting target data in the serving cell are a DRB and an MRB, and if the primary RB is configured by the network device, the DRB may be the primary RB, the MRB may be the secondary RB, or the MRB may be the primary RB, and the DRB may be the secondary RB.

Alternatively, the terminal device may default the DRB as the primary RB, the MRB as the secondary RB, or default the MRB as the primary RB, and the DRB as the secondary RB, or may determine the primary RB in at least one RB based on the priority of the RBs in the serving cell, or may determine the primary RB in at least one RB based on the communication quality of the RBs.

For example, if there are 3 RBs (# RB1, # RB2, and # RB3), # RB1 has a priority of 1, # RB2 has a priority of 2, and # RB3 has a priority of 3, the terminal apparatus determines # RB1 as the main RB.

Wherein the communication quality of the RB may be determined based on at least one of a reference signal received power, a received signal strength indication, a signal to interference plus noise ratio, and a data transmission rate.

The communication quality of the RB may be obtained by the terminal device directly performing measurement, or may be obtained by the terminal device performing measurement through an external server.

It can be seen that, in the embodiment of the present application, the primary RB may be configured by the network device or may be default by the terminal device, so that the flexibility of determining the primary RB is ensured, and the calculation complexity of the terminal device in determining the primary RB is reduced.

In an implementation manner of the present application, before the receiving the target data in the at least one RB, the method includes:

receiving a first message sent by a network device, where the first message carries receiving configuration information, and the first message includes at least one of a dedicated Radio Resource Control (RRC) message, a system message, a Media Access Control (MAC) Control Element (CE), and Downlink Control Information (DCI).

The system message includes, but is not limited to, at least one of a main system information block (MIB), a System Information Block (SIB), and at least one of Minimum System Information (MSI), minimum reserved system information (RMSI), or other system information.

The dedicated RRC message includes, but is not limited to, any one of an RRC Release (Release) message, an RRC connection reconfiguration (connection reconfiguration) message, an RRC connection reestablishment (connection reestablishment) message, an RRC connection setup (connection setup) message, an RRC connection resume (connection resume) message, or other RRC messages.

It can be seen that, in the embodiment of the present application, the network device may send the first message to the terminal device through at least one of the radio resource control RRC message, the system message, the media access control MAC control element CE, and the downlink control information DCI, which indicates that the manner of sending the first message has diversity, and is beneficial to improving the reliability of the network device in sending the first message.

In an implementation manner of the present application, the receiving configuration information includes at least one of:

an indication of whether a first receiving mode is supported, wherein the first receiving mode is used for the terminal equipment to receive data in a main RB and an auxiliary RB;

supporting the service identification of the first receiving mode;

an RB identifier supporting the first receiving mode;

a primary RB identifier;

a mode of the first reception mode;

activating a first receiving condition of the first receiving mode;

deactivating a second reception condition of the first reception mode;

a cell list supporting the first receiving mode;

the status of the terminal device.

Optionally, the indication whether the first receiving mode is supported occupies 1 bit, where a value of the 1 bit is 1 indicates that the first receiving mode is supported, and a value of the 1 bit is 0 indicates that the first receiving mode is not supported; or, the value of the 1 bit is 0 to indicate that the first reception mode is supported, and the value of the 1 bit is 1 to indicate that the first reception mode is not supported. Of course, the first receiving mode can also occupy multiple bits, and the indication of multiple bits is similar to the indication of 1 bit, and will not be described here.

Optionally, the number of bits occupied by the service identifier supporting the first receiving method may be fixed, or may be determined according to the number of services supporting the first receiving method.

For example, the number of bits occupied by the service identifier supporting the first receiving scheme is fixed, and is 4 bits, where a value of the 4 bits is 0001 indicates that the first receiving scheme is supported by the first service, a value of the 4 bits is 0010 indicates that the first receiving scheme is supported by the second service, and a value of the 4 bits is 0011 indicates that the first receiving scheme is supported by the third service, and so on.

For example, if there are 4 services supporting the first receiving scheme, the number of bits occupied by the service identifier supporting the first receiving scheme is 2, where a value of the 2 bits is 00, it indicates that the first receiving scheme is supported by the first service, where a value of the 2 bits is 01, it indicates that the first receiving scheme is supported by the second service, where a value of the 2 bits is 10, it indicates that the first receiving scheme is supported by the third service, and where a value of the 2 bits is 11, it indicates that the first receiving scheme is supported by the fourth service.

Optionally, the number of bits occupied by the RB identity supporting the first receiving scheme may be fixed, or may be determined according to the number of RBs supporting the first receiving scheme.

Alternatively, the number of bits occupied by the identifier of the primary RB may be the same as or different from the number of bits occupied by the RB identifier supporting the first reception scheme.

For example, if the number of bits occupied by the RB identity supporting the first reception scheme is fixed and 3 bits, the RB supporting the first reception scheme has 3 (# RB1, # RB2, and # RB3), the 3-bit value of 001 indicates # RB1, the 3-bit value of 010 indicates # RB2, the 3-bit value of 011 indicates # RB3, and the primary RB is any one of # RB1, # RB2, and # RB3, the number of bits occupied by the identity of the primary RB is 2, and it can indicate # RB1, # RB2, and # RB 3.

Wherein the mode of the first receiving mode includes at least one of fig. 1-3.

Optionally, the mode of the first receiving manner occupies 2 bits, where a value of the 2 bits is 00 indicates that the mode of the first receiving manner is fig. 1, a value of the 2 bits is 01 indicates that the mode of the first receiving manner is fig. 2, and a value of the 2 bits is 10 indicates that the mode of the first receiving manner is fig. 3; or, the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 01, the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 10, and the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 11;

or, the mode indicating the first reception manner is fig. 1 when the value of the 2 bits is 00, the mode indicating the first reception manner is fig. 3 when the value of the 2 bits is 01, and the mode indicating the first reception manner is fig. 2 when the value of the 2 bits is 10; or, the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 01, the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 10, and the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 11;

or, the mode indicating the first reception manner is fig. 3 when the value of the 2 bits is 00, the mode indicating the first reception manner is fig. 2 when the value of the 2 bits is 01, and the mode indicating the first reception manner is fig. 1 when the value of the 2 bits is 10; or, the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 01, the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 10, and the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 11;

or, the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 00, the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 01, and the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 10; or, the mode indicating the first reception manner is fig. 3 when the value of the 2 bits is 01, the mode indicating the first reception manner is fig. 1 when the value of the 2 bits is 10, and the mode indicating the first reception manner is fig. 2 when the value of the 2 bits is 11;

or, the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 00, the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 01, and the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 10; or, the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 01, the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 10, and the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 11;

or, the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 00, the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 01, and the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 10; or the mode indicating the first reception scheme is fig. 2 when the value of the 2 bits is 01, the mode indicating the first reception scheme is fig. 1 when the value of the 2 bits is 10, and the mode indicating the first reception scheme is fig. 3 when the value of the 2 bits is 11; of course, the first receiving mode may occupy multiple bits, and the indication of multiple bits is similar to the indication of 1 bit, and will not be described herein.

Optionally, the number of bits occupied by the cell list supporting the first receiving method may be fixed, or may be determined according to the number of cells supporting the first receiving method.

The state of the terminal device may be an RRC INACTIVE (INACTIVE) state, an RRC CONNECTED (CONNECTED) state, or an RRC IDLE (IDLE) state.

The terminal device in fig. 1 and 3 may be in an RRC-CONNECTED state, and the terminal device in fig. 2 may be in an RRC-IDLE state, may also be in an RRC-CONNECTED state, and may also be in an RRC-INACTIVE state.

The RRC-INACTIVE state is different from the RRC-IDLE state and the RRC CONNECTED (CONNECTED) state.

In an implementation manner of the present application, the first receiving condition includes at least one of:

the signal quality of the serving cell is greater than or equal to a first threshold;

the signal quality of the serving cell is less than a second threshold;

the signal quality of the adjacent cell is greater than or equal to a third threshold;

the signal quality of the adjacent cell is less than a fourth threshold;

the difference between the signal quality of the neighbor cell and the signal quality of the serving cell is greater than or equal to a fifth threshold.

The first threshold, the second threshold, the third threshold, the fourth threshold, and the fifth threshold may be preset.

Wherein the second threshold may be greater than the first threshold and the fourth threshold may be greater than the third threshold.

In an implementation manner of the present application, the second receiving condition includes at least one of:

the signal quality of the serving cell is greater than or equal to a sixth threshold;

the signal quality of the serving cell is less than a seventh threshold;

the signal quality of the adjacent cell is greater than or equal to an eighth threshold;

the signal quality of the adjacent cell is less than a ninth threshold;

the difference between the signal quality of the neighbor cell and the signal quality of the serving cell is greater than or equal to a tenth threshold.

The sixth threshold, the seventh threshold, the eighth threshold, the ninth threshold, and the tenth threshold may be preset.

Wherein the seventh threshold may be greater than the sixth threshold, and the ninth threshold may be greater than the eighth threshold.

In an implementation manner of the present application, the method further includes:

receiving a second message sent by the network device, where the second message carries reception configuration update information, the reception configuration update information is used to update the reception configuration information, and the second message includes at least one of a dedicated RRC message, a system message, a MAC CE, and DCI.

The dedicated RRC message includes, but is not limited to, any one of an RRC Release message, an RRC connection reconfiguration message, an RRC connection reestablishment message, an RRC connection setup message, an RRC connection resume message, or other RRC messages.

The system message includes, but is not limited to, at least one of MIB, SIB, and at least one of MSI, RMSI, or other system information.

The receiving configuration update information may update the content in the receiving configuration information, or update information corresponding to the content in the receiving configuration information.

In an implementation manner of the present application, the receiving target data in the at least one RB includes:

if at least one condition in the first receiving condition is met, the terminal equipment receives target data in the main RB and the auxiliary RB;

or, if at least one of the second receiving conditions is satisfied, the terminal device only receives the target data in the primary RB.

The target data in the primary RB received by the terminal device may be the same as or different from the target data in the secondary RB received by the terminal device.

For example, the target data in the primary RB is the target data sent by the network device, and the target data in the secondary RB is lost, which results in being different from the target data sent by the network device, so the target data in the primary RB is different from the target data in the secondary RB.

It can be seen that, in the embodiment of the present application, the terminal device determines whether to receive the target data in the secondary RB according to the first receiving condition and the second receiving condition, which not only ensures the reliability of data transmission, but also is beneficial to reducing the energy consumption of the terminal device under the condition that the target data in the secondary RB does not need to be received.

In an implementation manner of the present application, the receiving target data in at least one radio bearer RB includes:

receiving a third message sent by the network device, where the third message is used to instruct the terminal device to receive target data in the primary RB and the secondary RB, and the third message includes at least one of a dedicated RRC message, a system message, a MAC CE, and a DCI;

or receiving a fourth message sent by the network device, where the fourth message is used to instruct the terminal device to receive the target data in the primary RB, and the fourth message includes at least one of a dedicated RRC message, a system message, a MAC CE, and DCI.

In an implementation manner of the present application, before receiving target data in at least one radio bearer RB, the method includes:

sending first information to a network device, the first information being used for the network device to determine whether to instruct the terminal device to receive target data in the primary RB and the secondary RB, the first information including at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the eleventh threshold, and second information used for indicating that the terminal equipment is interested in receiving target data in the RB of the adjacent cell.

sending third information to a network device, where the third information is used for the network device to determine whether to instruct the terminal device to receive target data in the primary RB, and the third information includes at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the twelfth threshold, and fourth information used for indicating that the terminal equipment is not interested in receiving the target data in the RB of the adjacent cell.

And the network equipment feeds back a third message according to the first information sent by the terminal equipment, and feeds back a fourth message according to the third information sent by the terminal equipment.

After receiving the first information, the network device sends fifth information to a network device of a neighboring cell, where the fifth information is used to indicate that the terminal device is interested in receiving target data in an RB of the neighboring cell.

After receiving the third information, the network device sends sixth information to the network device of the neighboring cell, where the sixth information is used to indicate that the terminal device is not interested in receiving the target data in the RB of the neighboring cell.

Wherein, the twelfth threshold and the eleventh threshold can be preset or network configured.

Wherein, the twelfth threshold may be equal to or different from the eleventh threshold.

Wherein, the twelfth threshold may be-90 dB, or-80 dB, etc.

Wherein, the eleventh threshold may be-90 dB, or-80 dB, or-89 dB, etc.

In an implementation manner of the present application, the receiving target data in at least one RB includes:

receiving target data in a protocol entity corresponding to each RB of the at least one RB, and merging the target data, where the protocol entity corresponding to each RB is a protocol entity of a first protocol layer, and the first protocol layer includes at least one of: a Radio Link Control (RLC) layer, a Packet Data Convergence Protocol (PDCP) layer, a protocol layer above the RLC layer and a protocol layer above the PDCP layer;

or receiving target data in a protocol entity corresponding to each RB of the at least one RB, and merging the target data in a target function entity in the terminal device.

If the first Protocol layer is an RLC layer, the Data packets in the target Data are all RLC Protocol Data Units (PDUs), if the first Protocol layer is an PDCP layer, the Data packets in the target Data are all PDCP PDUs, if the first Protocol layer is a Protocol layer above the RLC layer, the Data packets in the target Data are all Protocol layer PDUs above the RLC layer, and if the first Protocol layer is a Protocol layer above the PDCP layer, the Data packets in the target Data are all Protocol layer PDUs above the PDCP layer.

Fig. 5 is a schematic diagram of a protocol stack corresponding to the DRB, fig. 6 is a schematic diagram of a protocol stack corresponding to the MRB, and if the first protocol layer is the PDCP layer, x in the MRB protocol stack is the PDCP layer.

The protocol layer above the RLC layer is a protocol layer above the RLC layer in the protocol stack corresponding to the MRB.

Wherein, the protocol layer above the PDCP layer is the protocol layer above the PDCP layer in the protocol stack corresponding to the DRB.

The target function entity is a function entity preset by the terminal equipment.

The target function entity may be different from an entity in a protocol stack corresponding to the terminal device, or may be the same as an entity in a protocol stack corresponding to the terminal device.

the first protocol layer is determined by the primary RB.

If the primary RB is a DRB, the first protocol layer may be an RLC layer, a PDCP layer, or a protocol layer above the PDCP layer.

Wherein, the main RB is DRB, the first protocol layer is PDCP layer, and x in the MRB protocol stack is PDCP.

If the primary RB is an MRB, the first protocol layer may be an RLC layer or a protocol layer above the RLC layer; if the primary RB is MRB and x in the MRB protocol stack is PDCP, the first protocol layer may be RLC or PDCP.

In an implementation manner of the present application, after receiving the target data in the at least one RB, the method further includes:

based on the SN associated with the target data, discarding the target data corresponding to the repeated SN in the SN, and uploading the target data corresponding to the non-repeated SN to an upper protocol layer of the first protocol layer;

transmitting a reception status report in the at least one RB, the reception status report indicating a reception situation where the terminal device receives the target data.

Wherein, the contents of the reception status report transmitted in at least one RB are the same.

Wherein, the receiving condition comprises that the target data is successfully received or the target data is unsuccessfully received.

If the target data is composed of a plurality of data packets, each data packet corresponds to one SN.

It can be seen that, in the embodiment of the present application, the content of the reception status report sent in at least one RB is the same, which is favorable for the reliability of data transmission.

Referring to fig. 7, fig. 7 is a terminal device according to an embodiment of the present application, including: one or more processors, one or more memories, one or more communication interfaces, and one or more programs;

the one or more programs are stored in the memory and configured to be executed by the one or more processors;

the program includes instructions for performing the steps of:

and receiving target data in at least one Radio Bearer (RB), wherein the target data in the at least one RB is data of a target service.

In one implementation manner of the present application, the at least one RB is a different type of RB in the same cell;

or, the at least one RB is an RB of the same type in different cells;

In an implementation of the present application, before the receiving the target data in the at least one RB, the program includes instructions further for:

supporting the service identification of the first receiving mode;

an RB identifier supporting the first receiving mode;

a primary RB identifier;

a mode of the first reception mode;

activating a first receiving condition of the first receiving mode;

deactivating a second reception condition of the first reception mode;

a cell list supporting the first receiving mode;

the status of the terminal device.

the signal quality of the serving cell is less than a second threshold;

the signal quality of the adjacent cell is less than a fourth threshold;

the signal quality of the serving cell is less than a seventh threshold;

the signal quality of the adjacent cell is less than a ninth threshold;

In an implementation manner of the present application, a second message sent by the network device is received, where the second message carries reception configuration update information, the reception configuration update information is used to update the reception configuration information, and the second message includes at least one of a dedicated RRC message, a system message, a MAC CE, and DCI.

In an implementation of the present application, in said receiving target data in the at least one RB, the program comprises instructions for further performing the steps of:

In an implementation manner of the present application, in terms of the receiving target data in at least one radio bearer RB, the program includes instructions for further performing the following steps:

receiving a third message sent by the network device, where the third message is used to instruct the terminal device to receive target data in the primary RB and the secondary RB, and the third message includes at least one of a dedicated RRC message, a system message, a MAC CE, and DCI;

or receiving a fourth message sent by the network device, where the fourth message is used to instruct the terminal device to receive target data in the primary RB, and the fourth message includes at least one of a dedicated RRC message, a system message, a MAC CE, and DCI.

In an implementation of the present application, before the receiving target data in at least one radio bearer RB, the program includes instructions further for:

sending third information to a network device, the third information being used for the network device to determine whether to instruct the terminal device to receive target data in the primary RB, the third information including at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the twelfth threshold, and fourth information used for indicating that the terminal device is not interested in receiving the target data in the RB of the adjacent cell.

In an implementation of the present application, in said receiving target data in at least one RB, the program comprises instructions for further performing the steps of:

receiving target data in a protocol entity corresponding to each RB in the at least one RB, and merging the target data, wherein the protocol entity corresponding to each RB is a protocol entity of a first protocol layer, and the first protocol layer comprises at least one of the following: a Radio Link Control (RLC) layer, a Packet Data Convergence Protocol (PDCP) layer, a protocol layer above the RLC layer and a protocol layer above the PDCP layer;

In an implementation of the present application, the first protocol layer is determined by the primary RB.

In an implementation of the present application, after receiving the target data in the at least one RB, the program includes instructions for performing the following steps:

based on the SN related to the target data, discarding the target data corresponding to the repeated SN in the SN, and uploading the target data corresponding to the unrepeated SN to an upper protocol layer of the first protocol layer;

and sending a receiving status report in the at least one RB, wherein the receiving status report is used for indicating the receiving condition of the terminal equipment for receiving the target data.

It should be noted that, for the specific implementation process of the present embodiment, reference may be made to the specific implementation process described in the above method embodiment, and a description thereof is omitted here.

Referring to fig. 8, fig. 8 is a data transmission apparatus provided in an embodiment of the present application, which is applied to a terminal device, and the apparatus includes:

a communication unit 801, configured to receive target data in at least one radio bearer RB, where the target data in the at least one RB is data of a target service.

or, the at least one RB is an RB of the same type in different cells;

In one implementation of the present application, the primary RB is configured by a network device; or the primary RB is default by the terminal device, the primary RB is an RB used for transmitting the target data in a serving cell, and the secondary RB is an RB used for transmitting the target data in an adjacent cell.

In an implementation manner of this application, the communication unit 801 is further configured to receive a first message sent by a network device before the target data in the at least one RB is received, where the first message carries reception configuration information, and the first message includes at least one of a dedicated radio resource control RRC message, a system message, a media access control MAC control element CE, and downlink control information DCI.

supporting the service identification of the first receiving mode;

an RB identifier supporting the first receiving mode;

a primary RB identifier;

a mode of the first reception mode;

activating a first receiving condition of the first receiving mode;

deactivating a second reception condition of the first reception mode;

a cell list supporting the first receiving mode;

the status of the terminal device.

the signal quality of the serving cell is less than a second threshold;

the signal quality of the adjacent cell is less than a fourth threshold;

the signal quality of the serving cell is less than a seventh threshold;

the signal quality of the adjacent cell is less than a ninth threshold;

In an implementation manner of this application, the communication unit 801 is further configured to receive a second message sent by the network device, where the second message carries reception configuration update information, the reception configuration update information is used to update the reception configuration information, and the second message includes at least one of a dedicated RRC message, a system message, a MAC CE, and DCI.

In an implementation manner of the present application, the apparatus further includes a processing unit 802, and in terms of the receiving the target data in the at least one RB, the communication unit 801 is further configured to determine, by the processing unit 802, that a terminal device satisfies at least one of the first receiving conditions before the terminal device receives the target data in the primary RB and the secondary RB;

alternatively, the communication unit 801 is further configured to determine, by the processing unit 802, that at least one of the second reception conditions is satisfied before the terminal device receives only the target data in the primary RB.

In an implementation manner of the present application, in terms of the receiving target data in at least one radio bearer RB, the communication unit 801 is further configured to:

In an implementation manner of the present application, the communication unit 801 is further configured to send, to a network device, first information before the receiving of the target data in the at least one radio bearer RB, where the first information is used by the network device to determine whether to instruct the terminal device to receive the target data in the primary RB and the secondary RB, and the first information includes at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the eleventh threshold, and second information used for indicating that the terminal equipment is interested in receiving the target data in the RB of the adjacent cell.

In an implementation manner of this application, the communication unit 801 is further configured to, before the receiving of the target data in the at least one radio bearer RB, send third information to a network device, where the third information is used by the network device to determine whether to instruct the terminal device to receive the target data in the primary RB, and the third information includes at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the twelfth threshold, and fourth information used for indicating that the terminal equipment is not interested in receiving the target data in the RB of the adjacent cell.

In an implementation manner of the present application, after receiving target data in at least one RB, the processing unit 802 is further configured to discard, based on a serial number SN associated with the target data, target data corresponding to a repeated SN in the SNs, and upload the target data corresponding to the non-repeated SN to an upper protocol layer of the first protocol layer;

a communication unit 801, further configured to send a reception status report in the at least one RB, where the reception status report is used to indicate a reception situation where the terminal device receives the target data.

It should be noted that, in the apparatus, the communication unit 801 may be implemented by a communication interface, and the processing unit 802 may be implemented by a processor.

Embodiments of the present application also provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, the computer program enabling a computer to execute part or all of the steps of any one of the methods as described in the above method embodiments, and the computer includes a user equipment.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising user equipment.

It should be noted that for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art will recognize that the embodiments described in this specification are preferred embodiments and that acts or modules referred to are not necessarily required for this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, 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 of some interfaces, devices or units, and may be an electric 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 position, or may be distributed on multiple 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 may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several 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 above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A data transmission method is applied to a terminal device, and the method comprises the following steps:

receiving target data in at least one Radio Bearer (RB), wherein the target data in the at least one RB is data of a target service;

the receiving target data in at least one RB comprises:

2. The method of claim 1, wherein the at least one RB is a different type of RB in the same cell;

or, the at least one RB is an RB of the same type in different cells;

3. The method of claim 1 or 2, wherein the at least one RB comprises at least one of a primary RB and a secondary RB.

4. The method of claim 3, wherein the primary RB is configured by a network device; or the primary RB is default by the terminal device, the primary RB is an RB used for transmitting the target data in a serving cell, and the secondary RB is an RB used for transmitting the target data in an adjacent cell.

5. The method of claim 1, 2 or 4, wherein prior to said receiving the target data in the at least one RB, the method comprises:

6. The method of claim 5, wherein the receiving the configuration information comprises at least one of:

supporting the service identification of the first receiving mode;

an RB identifier supporting the first receiving mode;

a primary RB identifier;

a mode of the first reception mode;

activating a first receiving condition of the first receiving mode;

deactivating a second reception condition of the first reception mode;

a cell list supporting the first receiving mode;

the status of the terminal device.

7. The method of claim 6, wherein the first receiving condition comprises at least one of:

the signal quality of the serving cell is less than a second threshold;

the signal quality of the adjacent cell is less than a fourth threshold;

8. The method of claim 6, wherein the second receiving condition comprises at least one of:

the signal quality of the serving cell is less than a seventh threshold;

the signal quality of the adjacent cell is less than a ninth threshold;

9. The method according to any one of claims 6-8, further comprising:

10. The method of claim 6, wherein the receiving the target data in the at least one RB comprises:

11. The method of claim 4, wherein the receiving target data in at least one Radio Bearer (RB) comprises:

12. The method of claim 11, wherein before receiving the target data in the at least one Radio Bearer (RB), the method comprises:

sending first information to a network device, the first information being used for the network device to determine whether to instruct the terminal device to receive target data in the primary RB and the secondary RB, the first information including at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the eleventh threshold, and second information used for indicating that the terminal equipment is interested in receiving the target data in the RB of the adjacent cell.

13. The method of claim 11, wherein before receiving the target data in the at least one Radio Bearer (RB), the method comprises:

sending third information to a network device, the third information being used for the network device to determine whether to instruct the terminal device to receive target data in the primary RB, the third information including at least one of: the signal quality of the adjacent cell, the adjacent cell with the signal quality larger than or equal to the twelfth threshold, and fourth information used for indicating that the terminal equipment is not interested in receiving the target data in the RB of the adjacent cell.

14. The method of claim 4, 6, 10, 11, 12 or 13, further comprising:

the first protocol layer is determined by the primary RB.

15. The method of claim 1, 2, 4, 6, 7, 8, 10, 11, 12, or 13, wherein after receiving the target data in the at least one RB, the method further comprises:

and discarding the target data corresponding to the repeated SN in the SNs based on the SN associated with the target data, and uploading the target data corresponding to the unrepeated SN to an upper protocol layer of the first protocol layer.

16. The method of claim 15, wherein after receiving the target data in the at least one RB, the method further comprises:

17. A data transmission apparatus, applied to a terminal device, the apparatus comprising:

a communication unit, configured to receive target data in at least one radio bearer RB, where the target data in the at least one RB is data of a target service;

the receiving target data in at least one RB comprises:

or receiving target data in a protocol entity corresponding to each RB in the at least one RB, and combining the target data in a target functional entity in the terminal equipment.

18. A terminal device, characterized in that the terminal device comprises a processor, a memory, a communication interface, the memory being configured to store one or more programs, the processor being configured to invoke the one or more programs so that the terminal device performs the method according to any of claims 1-16.

19. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-16.