CN111065113B

CN111065113B - Method and equipment for sending data packet

Info

Publication number: CN111065113B
Application number: CN201811207810.9A
Authority: CN
Inventors: 王莹莹; 孙军帅; 黄学艳; 韩星宇; 易芝玲
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2023-05-05
Anticipated expiration: 2038-10-17
Also published as: CN111065113A

Abstract

The embodiment of the invention discloses a method and equipment for sending a data packet, which are used for solving the problems of longer time delay and larger system overhead in the data transmission process. When the embodiment of the invention is used for data transmission, firstly, an SDAP layer in the sending equipment maps SDAP data on Qos flow to SRB; then determining SRB capable of bearing SDAP data to be transmitted in SRB by SDAP layer in transmitting device; and finally, the SDAP layer in the transmitting device transmits the SDAP data to the PDCP layer through the determined SRB. After the SRB which can bear SDAP data to be transmitted in the SRB connected between the transmitting equipment and the receiving equipment is determined, the SRB transmits the data, so that the processes of establishing and deleting the DRB are reduced, the system resources are better saved, and the time delay and the system overhead are reduced.

Description

Method and equipment for sending data packet

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a method and apparatus for sending a data packet.

Background

With the introduction of the 5G concept, the current requirements for data transmission are also increasing. Because the 5G technology will achieve ultra low latency and high reliability, it is more desirable to reduce latency and reduce overhead.

At present, in the Data transmission process, an SDAP (Simple DFS Access Protocol, simple distributed file transmission system access protocol) layer is introduced, the SDAP layer is used for transmitting Data of a user plane, mapping from uplink and downlink Data Qos flows (Quality of Service flow, quality of service flows) to a DRB is achieved, qos Identifiers (IDs) are added in the uplink and downlink Data flows, mapping of reflective Qos is completed, when the current SDAP layer processes the Data of the Qos flows, corresponding DRBs (Data RB) are required to be established, the Data of the Qos flows can be transmitted after the Data between a terminal and a base station are carried out, and the Data are mapped to the DRBs for processing. Therefore, when handling bursty traffic and low-latency traffic, frequent DRB puncturing may affect the transmission latency of data, resulting in increased signaling overhead.

In summary, the time delay is longer and the system overhead is larger in the current data transmission process.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for sending a data packet, which are used for solving the problems of longer time delay and larger system overhead in the data transmission process.

In a first aspect, a method for sending a data packet provided by an embodiment of the present invention includes:

firstly, mapping SDAP data on Qos flow to SRB (Signal RB) by an SDAP layer in a sending device; then determining SRB capable of bearing SDAP data to be transmitted in SRB by SDAP layer in transmitting device; finally, the SDAP layer in the sending device sends the SDAP data to a PDCP (Packet Data Convergence Protocol ) layer through the determined SRB.

According to the method, after the SDAP layer determines that the SRB capable of bearing the SDAP data to be transmitted exists in the SRB, the SRB transmits the data, so that the processes of establishing and deleting the DRB are reduced, system resources are better saved, and time delay and system overhead are reduced.

In one possible implementation, the SDAP layer in the sending device determines an SRB that matches the Qos flow of SDAP data that needs to be sent.

According to the method, when data transmission is carried out, the SDAP layer in the transmitting equipment determines the SRB matched with the Qos flow of the SDAP data to be transmitted, so that the data transmission is carried out through the matched SRB, the data transmission process is smoother, and the success rate is higher.

In one possible implementation manner, the SDAP layer in the sending device selects an SRB capable of carrying SDAP data to be sent from SRBs with transmission indication marks; or determining the SRB capable of bearing the SDAP data to be transmitted according to the RRC layer transmission instruction by the SDAP layer in the transmitting equipment.

According to the method, the sending equipment can better determine that the selected SRB has a data transmission function by selecting the SRB with the transmission indication mark, and meanwhile, the SRB for transmission can be determined in two ways, so that the adaptability is better.

In a possible implementation manner, for any one selected SRB, the SDAP layer in the sending device determines a Qos flow corresponding to the SRB according to configuration information of the SRB in RRC configuration; and the SDAP layer in the transmitting equipment determines the SRB with the same Qos flow as that of the SDAP data to be transmitted according to the configuration information of the SRB in the RRC configuration.

According to the method, the sending device determines the Qos flow corresponding to the SRB according to the configuration information of any selected SRB, and determines the SRB with the same Qos flow corresponding to the SDAP data to be sent, so that the SRB suitable for data transmission is found, and the data transmission is better performed and completed.

In one possible implementation, the SDAP layer in the transmitting device determines the SRB with the transmission indication flag according to the flag information of the RRC configuration.

According to the method, the SRB with the transmission indication mark is determined through the mark information configured by the RRC, so that the SDAP layer in the sending equipment can better determine the SRB with the transmission capability according to the indication mark.

In a possible implementation manner, the SDAP layer in the sending device determines, according to the correspondence between the SRBs and the Qos flows, the SRBs corresponding to the Qos flows of the SDAP data to be sent.

According to the method, the sending equipment determines the SRB corresponding to the Qos flow of the SDAP data to be sent according to the corresponding relation between the SRB and the Qos flow, so that the SRB suitable for data transmission is found, and the data transmission is better performed and completed.

In a second aspect, a method for sending a data packet provided by an embodiment of the present invention includes:

firstly, a PDCP layer in receiving equipment sends SDAP data to an SDAP layer through a determined SRB; and finally, the SDAP layer in the receiving equipment determines Qos flow corresponding to the SDAP data borne by the SRB.

According to the method, the PDCP layer in the receiving device sends the SDAP data to the SDAP layer through the determined SRB, the SDAP layer determines the Qos flow corresponding to the SDAP data borne by the SRB, and the SRB sends the data, so that the processes of establishing and deleting the DRB are reduced, system resources are better saved, and time delay and system overhead are reduced.

In a possible implementation manner, the SDAP layer in the receiving device determines, through RRC (Radio Resource Control ) signaling or a packet header of an SDAP PDU (Protocol Data Unit ) in the received SDAP data, a Qos flow corresponding to the SDAP data carried by the SRB.

According to the method, the SDAP layer in the receiving equipment can determine the Qos flow corresponding to the SDAP data borne by the SRB in two ways, and the adaptability is higher.

In a third aspect, an embodiment of the present invention provides a device for sending a data packet, including: processor and transceiver:

the processor is configured to map, by the transceiver, the SDAP data on the Qos flow to the SRB; determining SRB capable of bearing SDAP data to be transmitted in the SRB; and sending the SDAP data to the PDCP layer through the determined SRB.

In a fourth aspect, an embodiment of the present invention provides a device for sending a data packet, including: processor and transceiver:

the processor is used for sending the SDAP data to an SDAP layer through the determined SRB; and determining Qos flow corresponding to the SDAP data borne by the SRB.

In a fifth aspect, an embodiment of the present invention further provides a device for sending a data packet, where the device includes:

at least one processing unit and at least one storage unit, wherein the storage unit stores program code which, when executed by the processing unit, causes the processing unit to perform the functions of the embodiments of the first aspect described above.

In a sixth aspect, an embodiment of the present invention further provides a device for sending a data packet, where the device includes:

at least one processing unit and at least one storage unit, wherein the storage unit stores program code which, when executed by the processing unit, causes the processing unit to perform the functions of the embodiments of the second aspect described above.

In a seventh aspect, a computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the above method.

In an eighth aspect, the present application also provides a computer storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method of any of the first to second aspects.

In addition, technical effects caused by any implementation manner of the third aspect to the eighth aspect may be referred to technical effects caused by different implementation manners of the first aspect to the second aspect, and are not described herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a system structure for transmitting a data packet according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a data transmission device according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an apparatus for transmitting a first data packet according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an apparatus for transmitting a second data packet according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an apparatus for transmitting a third data packet according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an apparatus for transmitting a fourth data packet according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a method for transmitting a first data packet according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a method for sending a second data packet according to an embodiment of the present invention;

fig. 9 is a flowchart of a method for transmitting a data packet according to an embodiment of the present invention.

Detailed Description

For the purpose of promoting an understanding of the principles and advantages of embodiments of the invention, reference will now be made in detail to the embodiments of the invention, some but not all of which are illustrated in the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the embodiments of the present invention.

Some words appearing hereinafter are explained:

(1) The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

(2) "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

(3) The SDAP refers to a service discovery application specification defined for investigation of services. It is responsible for searching for known or specific services, and for performing some general service searches and browses.

(4) The PDCP referred to in the embodiment of the present invention is a short term for packet data convergence protocol.

As shown in fig. 1, an embodiment of the present invention provides a system for transmitting a data packet, where the system includes:

a transmitting device 100, configured to map the SDAP data on the Qos flow to the SRB; determining SRB capable of bearing SDAP data to be transmitted in the SRB; transmitting the SDAP data to the PDCP layer through the determined SRB;

a receiving device 101, configured to send the SDAP data to an SDAP layer through the determined SRB; and determining the Qos flow in the SRB according to the RRC signaling or the packet header of the received SDAP PDU.

By the method, after the SDAP layer determines that the SRB capable of bearing the SDAP data to be transmitted exists in the SRB, the SRB transmits the data, so that the processes of establishing and deleting the DRB are reduced, system resources are better saved, and time delay and system overhead are reduced.

As shown in fig. 2, the transmitting device in the embodiment of the present invention may be a terminal or a base station, and the receiving device may be a terminal or a base station.

Specifically, when uplink data transmission is performed, the sending device is a terminal, and the receiving device is a base station; when downlink data transmission is performed, the sending device is a base station, and the receiving device is a terminal.

The embodiment of the invention mainly realizes data transmission by mapping the data on the SRB, so that the mapping relation between the SRB and the Qos flow is firstly required to be configured.

In the embodiment of the invention, the SRB is configured mainly through the RRC layer, and the information for configuring the SRB by the RRC layer mainly comprises the following steps:

(1) Mapping relation of SRB and Qos flow;

the embodiment of the invention adopts two methods to configure the mapping relation between the SRB and the Qos flow, and the mapping relation is respectively described below.

Configuration mode 1: and configuring the mapping relation between the SRB and the Qos flow through the SRB.

Configuration mode 2: and uniformly configuring the mapping relation of SRB and Qos flow in the SDAP layer.

(2) The SRB may perform an indication of the transmission data.

The information of the configuration of the SRB by the RRC layer may further include a transmission instruction, where the transmission instruction is used to specify that the configured SRB performs data transmission.

(3) The Qos Flow id transmitted on a certain SRB is added, along with the attributes of the corresponding Qos Flow.

The QOS flow attributes include parameters of whether it is refelc (reflective QOS), GBR (Guranteed Bit Rate, guaranteed bit rate) or NGBR (Non Guranteed Bit Rate, network does not provide minimum transmission rate guarantee), and are used to assist SDAP in mapping QOS flow.

In the embodiment of the invention, when transmitting data, a transmitting device transmits the data to be transmitted to a receiving device, firstly, an SDAP layer in the transmitting device determines an SRB capable of bearing the SDAP data to be transmitted in the SRB.

In the embodiment of the present invention, the result of determining, according to the SDAP layer in the sending device, that the SRB can carry the SDAP data that needs to be sent in the SRB may be divided into multiple cases, which are described below respectively.

Case 1: the SDAP layer in the transmitting device determines that there is an SRB capable of bearing SDAP data to be transmitted in the SRB connected with the PDCP layer.

In case 1, there may be a plurality of SRBs capable of carrying the SDAP data in the SRBs connected between the SDAP layer and the PDCP layer in the transmitting device, so the SDAP layer in the transmitting device needs to determine which SRB to select for data transmission.

The SDAP layer may determine the SRB used for transmission in a variety of ways, as described below.

Determination mode 1: the SDAP layer in the transmitting device selects SRB capable of bearing SDAP data to be transmitted from SRB with transmission indication mark.

Determination mode 2: and the SDAP layer in the transmitting device determines SRB capable of bearing SDAP data to be transmitted according to the RRC layer transmission instruction.

The information of the configuration of the SRB by the RRC layer may further include a transmission instruction, which is used to specify the SRB that performs data transmission in the configured SRB. Therefore, the SDAP layer may determine the SRB specified in the RRC layer transmission instruction as the SRB used for transmission directly according to the transmission instruction of the RRC layer.

The methods for configuring the mapping relationship between the SRB and the Qos flow are different, and the manners for determining the SRB matching the Qos flow of the to-be-transmitted SDAP data by the SDAP layer in the transmitting device in the embodiment of the present invention are also different, which are described below.

Determining a matching SRB in the case of configuration 1:

specifically, the SDAP layer in the transmitting device selects an SRB with a transmission indication mark from SRBs connected with the PDCP layer; for any one selected SRB, determining a Qos flow corresponding to the SRB by an SDAP layer in the sending equipment according to configuration information of the SRB; and the SDAP layer in the sending equipment determines the SRB with the same corresponding Qos flow as that of the SDAP data to be sent.

Through the method, the sending device can better determine that the selected SRB has a data transmission function by selecting the SRB with the transmission indication mark, and meanwhile, the sending device determines the Qos flow corresponding to the SRB according to the configuration information of any selected SRB, and determines the SRB with the same Qos flow as the Qos flow of SDAP data to be sent, so that the SRB suitable for data transmission is found, and the data transmission is better performed and completed.

Determining a matching SRB in configuration 2:

specifically, the SDAP layer in the sending device determines, according to the correspondence between the SRB and the Qos flow, the SRB corresponding to the Qos flow of the SDAP data to be sent.

Through the method, the sending device determines the SRB corresponding to the Qos flow of the SDAP data to be sent according to the corresponding relation between the SRB and the Qos flow, so that the SRB suitable for data transmission is found, and the data transmission is better performed and completed.

After determining the SRB used for transmission, the SDAP layer in the sending device sends the SDAP data to the PDCP layer through the determined SRB.

Case 2: the SDAP layer in the transmitting device determines that there is no SRB capable of carrying SDAP data to be transmitted among SRBs connected with the PDCP layer.

And if the SDAP layer in the transmitting device determines that the SRB capable of bearing the SDAP data to be transmitted is not available in the SRB connected with the PDCP layer, the SDAP layer in the transmitting device transmits the SDAP data to the PDCP layer by establishing the DRB.

When the embodiment of the invention is used for data transmission, after receiving the data sent by the sending device, the PDCP layer in the receiving device determines whether the received data is transmitted through SRB.

If the data received in the receiving device is transmitted through SRB, the PDCP layer in the receiving device sends the SDAP data to the SDAP layer through the determined SRB;

and after receiving the SDAP data, the SDAP layer in the receiving equipment determines Qos flow corresponding to the SDAP data borne by the SRB.

The SDAP layer may determine Qos flows corresponding to the SDAP data carried by the SRB in a plurality of manners, which are described below.

Determination mode 1: and the SDAP layer in the receiving equipment determines Qos flow corresponding to the SDAP data borne by the SRB through RRC signaling.

The RRC determines Qos flow corresponding to the SDAP data borne by the SRB according to the corresponding relation between the SDAP data and the Qos flow, and sends the Qos flow to an SDAP layer in the receiving equipment through a transmission instruction, and the SDAP layer in the receiving equipment determines Qos flow corresponding to the SDAP data borne by the SRB according to the received RRC layer transmission instruction.

Determination mode 2: and the SDAP layer in the receiving equipment determines Qos flow corresponding to the SDAP data borne by the SRB through the packet header of the SDAP PDU in the received SDAP data.

And after the SDAP layer in the receiving equipment receives the SDAP data, determining the Qos flow corresponding to the SDAP data borne by the SRB according to the corresponding relation between the SDAP data and the Qos flow in the packet header of the SDAP PDU.

If the data received in the receiving device is not transmitted through SRB, the PDCP layer in the receiving device sends the SDAP data to the upper layer through establishing DRB.

According to the method, the SRB sends the data, so that the processes of establishing and deleting DRB are reduced, system resources are better saved, and time delay and system overhead are reduced.

In some possible implementations, aspects of a method for sending a data packet provided by the embodiments of the present invention may also be implemented as a program product, which includes program code for causing a computer device to perform the steps of the method for sending a data packet according to the various exemplary embodiments of the present invention described in this specification, when the program code is run on the computer device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A program product for data forwarding control according to an embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program code and may run on a server device. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an information transmission, apparatus, or device.

The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. The readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with a periodic network action system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device.

As shown in fig. 3, an embodiment of the present invention provides a device for sending a data packet, including: processor 300 and transceiver 301:

the processor 300 is configured to map, by the transceiver, the SDAP data on the Qos flow to the SRB; determining SRB capable of bearing SDAP data to be transmitted in the SRB; and sending the SDAP data to the PDCP layer through the determined SRB.

Optionally, the SRB capable of carrying the SDAP data to be sent is an SRB matching with Qos flow of the SDAP data to be sent.

Optionally, the processor 300 is specifically configured to:

selecting an SRB capable of bearing SDAP data to be transmitted from SRBs with transmission indication marks; or alternatively, the first and second heat exchangers may be,

and determining SRB capable of bearing SDAP data to be transmitted according to the RRC layer transmission instruction.

Optionally, the processor 300 is specifically configured to:

for any one selected SRB, determining Qos flow corresponding to the SRB according to configuration information of the SRB in RRC configuration;

and determining the SRB with the same Qos flow as the Qos flow of the SDAP data to be transmitted according to the configuration information of the SRB in the RRC configuration.

Optionally, the processor 300 is specifically configured to:

and determining the SRB with the transmission indication mark according to the mark information of the RRC configuration.

Optionally, the processor determines the SRB matching the Qos flow of the SDAP data to be sent by:

and determining the SRB corresponding to the SDAP PDU corresponding to the Qos flow to be transmitted according to the corresponding relation between the SRB and the Qos flow.

As shown in fig. 4, the present invention provides a device for transmitting a data packet, the device comprising:

at least one memory unit 400 and at least one processing unit 401, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following process:

for mapping SDAP data on the Qos flow to SRB by the transceiver; determining SRB capable of bearing SDAP data to be transmitted in the SRB; and sending the SDAP data to the PDCP layer through the determined SRB.

Optionally, the processing unit 401 is specifically configured to:

Optionally, the processing unit 401 determines the SRB matching the Qos flow of the SDAP data to be sent by:

As shown in fig. 5, an embodiment of the present invention provides a device for sending a data packet, including: processor 500 and transceiver 501:

the processor: for sending the SDAP data to an SDAP layer through the determined SRB; and determining Qos flow corresponding to the SDAP data borne by the SRB.

Optionally, the processor 500 is specifically configured to:

and determining the Qos flow corresponding to the SDAP data borne by the SRB through RRC signaling or the packet header of the SDAP PDU in the received SDAP data.

As shown in fig. 6, the present invention provides a device for transmitting a data packet, the device comprising:

at least one memory unit 600 and at least one processing unit 601, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following process:

for sending the SDAP data to an SDAP layer through the determined SRB; and determining Qos flow corresponding to the SDAP data borne by the SRB.

Optionally, the processing unit 601 is specifically configured to:

Embodiments of the present invention also provide a non-transitory readable storage medium comprising program code for causing a computing device to perform the steps of the method of data packet transmission when the program code is run on the computing device.

Based on the same inventive concept, the embodiment of the present invention further provides a method for sending a data packet, and because the device corresponding to the method is the device for sending a data packet in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, implementation of the method can refer to implementation of a system, and repeated parts are not repeated.

As shown in fig. 7, a method for sending a data packet according to an embodiment of the present invention specifically includes the following steps:

step 700, mapping SDAP data on Qos flow to SRB by an SDAP layer in the sending equipment;

step 701, determining, by an SDAP layer in a transmitting device, an SRB capable of bearing SDAP data to be transmitted in the SRB;

step 702, the SDAP layer in the sending device sends the SDAP data to the PDCP layer through the determined SRB.

Optionally, the determining, by the SDAP layer in the sending device, the SRB capable of carrying the SDAP data to be sent includes:

the SDAP layer in the transmitting device selects SRB capable of bearing SDAP data to be transmitted from SRB with transmission indication mark; or alternatively, the first and second heat exchangers may be,

and the SDAP layer in the transmitting device determines SRB capable of bearing SDAP data to be transmitted according to the RRC layer transmission instruction.

Optionally, the SDAP layer in the sending device selects an SRB for transmission from SRBs with transmission indication marks, including:

for any one selected SRB, the SDAP layer in the sending device determines Qos flow corresponding to the SRB according to configuration information of the SRB in RRC configuration;

and the SDAP layer in the transmitting equipment determines the SRB with the same Qos flow as that of the SDAP data to be transmitted according to the configuration information of the SRB in the RRC configuration.

Optionally, the method further comprises:

the SDAP layer in the transmitting device determines the SRB with the transmission indication mark according to the mark information of the RRC configuration.

Optionally, the SDAP layer in the sending device determines the SRB that matches the Qos flow of the SDAP data to be sent by:

and the SDAP layer in the sending equipment determines the SRB corresponding to the SDAP PDU corresponding to the Qos flow to be sent according to the corresponding relation between the SRB and the Qos flow.

As shown in fig. 8, an embodiment of the present invention further provides a method for sending a data packet, where the method includes:

step 800, the PDCP layer in the receiving device sends the SDAP data to the SDAP layer through the determined SRB;

step 801, the SDAP layer in the receiving device determines Qos flow corresponding to the SDAP data carried by the SRB.

Optionally, the determining, by the SDAP layer in the receiving device, a Qos flow corresponding to the SDAP data carried by the SRB includes:

and the SDAP layer in the receiving equipment determines the Qos flow corresponding to the SDAP data borne by the SRB through RRC signaling or the packet header of the SDAP PDU in the received SDAP data.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the point of view that the terminal and the base station are the execution subjects. In order to implement the functions in the methods provided in the embodiments of the present application, the terminal and the base station may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

As shown in fig. 9, in the method for sending a data packet according to the embodiment of the present invention, a selected terminal is a sending device, a base station is a receiving device, and the case of determining an SRB for transmission by an SDAP layer is illustrated, which specifically includes the following steps:

step 900, mapping SDAP data on Qos flow to SRB by SDAP layer in the sending device;

step 901, determining, by the SDAP layer in the sending device, whether there is an SRB capable of carrying SDAP data to be sent in the SRB, if so, executing step 902, and if not, executing step 903;

step 902, the SDAP layer in the sending device selects an SRB capable of bearing SDAP data to be sent from SRBs with transmission indication marks;

step 903, the SDAP layer in the sending device sends the SDAP data to an upper layer by establishing a DRB;

step 904, the SDAP layer in the sending device sends the SDAP data to an upper layer through the determined SRB;

step 905, an upper layer in the transmitting device transmits the received data through an air interface;

step 906, the receiving device receives the data sent by the sending device through the air interface;

step 907, the PDCP layer in the receiving device determines whether the received data is transmitted through the SRB, if yes, step 908 is executed, and if not, step 909 is executed;

step 908, the PDCP layer in the receiving device sends the SDAP data to an SDAP layer through the determined SRB;

step 909, the PDCP layer in the receiving device sends the SDAP data to an upper layer by establishing a DRB;

step 910, the SDAP layer in the receiving device determines a Qos flow corresponding to the SDAP data carried by the SRB, and sends the Qos flow to an upper layer.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the present application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Still further, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method of data packet transmission, the method comprising:

the SDAP layer in the sending equipment maps SDAP data on Qos flow to a signaling bearing SRB between the terminal and the base station;

an SDAP layer in the transmitting device determines SRB which can bear SDAP data to be transmitted in the SRB;

the SDAP layer in the transmitting device transmits the SDAP data to the packet data convergence protocol PDCP layer through the determined SRB;

the determining, by the SDAP layer in the sending device, the SRB capable of carrying SDAP data to be sent includes:

the SDAP layer in the transmitting device selects SRB capable of bearing SDAP data to be transmitted from SRB with transmission indication mark.

2. The method of claim 1, wherein the SRB capable of carrying the SDAP data to be transmitted is an SRB that matches a Qos flow of the SDAP data to be transmitted.

3. The method of claim 1, wherein the SDAP layer in the transmitting device selects an SRB for transmission from SRBs having transmission indication flags, comprising:

4. A method according to any one of claims 1 to 3, wherein the method further comprises:

the SDAP layer in the transmitting device determines the SRB with the transmission indication mark according to the mark information of the Radio Resource Control (RRC) configuration.

5. A method of data packet transmission, the method comprising:

the PDCP layer in the receiving device transmits SDAP data to the SDAP layer through the determined SRB selected from SRBs having a transmission indication flag;

and the SDAP layer in the receiving equipment determines Qos flow corresponding to the SDAP data borne by the SRB.

6. The method of claim 5, wherein the determining, by the SDAP layer in the receiving device, a Qos flow corresponding to the SDAP data carried by the SRB, comprises:

and the SDAP layer in the receiving equipment determines the Qos flow corresponding to the SDAP data borne by the SRB through RRC signaling or the packet header of the SDAP protocol data unit PDU in the received SDAP data.

7. An apparatus for transmitting data packets, comprising: processor and transceiver:

the processor is configured to map, by the transceiver, the SDAP data on the Qos flow to the SRB; determining SRB capable of bearing SDAP data to be transmitted in the SRB; transmitting the SDAP data to the PDCP layer through the determined SRB;

wherein, the processor is specifically configured to:

an SRB capable of carrying SDAP data to be transmitted is selected from SRBs having transmission indication marks.

8. The apparatus of claim 7, wherein the SRB capable of carrying the SDAP data to be transmitted is an SRB that matches a Qos flow of the SDAP data to be transmitted.

9. The apparatus of claim 7, wherein the processor is specifically configured to:

10. The apparatus of any of claims 7-9, wherein the processor is further configured to:

11. An apparatus for transmitting data packets, comprising: processor and transceiver:

the processor is configured to send the SDAP data to the SDAP layer through the determined SRB, where the SRB is selected from the SRBs having the transmission indication flag; and determining Qos flow corresponding to the SDAP data borne by the SRB.

12. The apparatus of claim 11, wherein the processor is specifically configured to:

13. An apparatus for transmitting data packets, the apparatus comprising: at least one processing unit and at least one storage unit, wherein the storage unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of the method of any one of claims 1 to 4 or the steps of the method of any one of claims 5 to 6.

14. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4 or the steps of the method according to any one of claims 5 to 6.