WO2019153109A1

WO2019153109A1 - Method, apparatus and device for realizing re-mapping of quality of service flow, and storage medium

Info

Publication number: WO2019153109A1
Application number: PCT/CN2018/075361
Authority: WO
Inventors: 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-02-06
Filing date: 2018-02-06
Publication date: 2019-08-15
Also published as: CN109804660B; CN109804660A

Abstract

Disclosed are a method, apparatus and device for realizing the re-mapping of a quality of service flow, and a storage medium. The method comprises: for any one QoS flow, when it is determined that the QoS flow needs to be re-mapped from a first DRB to a second DRB, continuously transmitting, on the first DRB, an SDAP PDU that has been transmitted; and when it is determined that the transmission of the SDAP PDU transmitted on the first DRB is successful, transmitting an untransmitted SDAP SDU on the second DRB. By applying the scheme of the present invention, the sequential submission, etc. of QoS flow data can be realized.

Description

Method, device, device and storage medium for implementing service quality flow re-mapping

Technical field

The present invention relates to a wireless network technology, and in particular, to a method, an apparatus, a device, and a storage medium for implementing a quality of service flow re-mapping.

Background technique

Quality of Service (QoS) of 5G New Radio (NR) consists of two parts: Non-Access Stratum Mapping (NAS Mapping) and Access Stratum Mapping (AS Mapping). ). It includes the process of mapping data packets from IP flow (Internet Protocol flow) to QoS flow and mapping from QoS flow to Data Radio Bearer (DRB).

In addition, a Service Data Adaptation Protocol (SDAP) is newly introduced on the Radio Access Network (RAN) side. Figure 1 is a schematic diagram of the location and function of the existing SDAP sublayer. As shown in Figure 1, the SDAP sublayer can be used to complete the mapping of QoS flow to DRB.

When the RRC (Radio Resource Control) connection is initially established, the RAN side only establishes the default bearer, that is, the default DRB. Then, data from different QoS flows is mapped to the default DRB. After the DRB corresponding to a certain QoS flow is established, the data of the QoS flow needs to be remapped to the new DRB.

2 is a schematic diagram of an existing QoS flow remapping. As shown in Figure 2, initially, the data of QoS flow1 and QoS flow2 are mapped to DRB1. When DRB2 with higher priority is established (more in line with the requirements of QoS flow2), the data of QoS flow 2 needs to be remapped to On the DRB2.

In addition to the above scenarios, QoS flow remapping may also occur in scenarios such as handover and dual connectivity.

However, there is no practical implementation in the prior art for how to complete QoS flow remapping.

Summary of the invention

In view of this, the present invention provides a method, an apparatus, a device, and a storage medium for implementing a quality of service flow re-mapping.

The specific technical solutions are as follows:

A method for implementing quality of service flow re-mapping includes:

For any QoS flow, when it is determined that the first DRB needs to be remapped to the second DRB, the already transmitted SDAP PDU continues to be transmitted on the first DRB;

After determining that the SDAP PDU transmission on the first DRB is successfully transmitted, the untransmitted SDAP SDU is transmitted on the second DRB.

A service quality flow re-mapping implementation device includes: a first transmission unit and a second transmission unit;

The first transmission unit is configured to continue to transmit the already transmitted SDAP PDU on the first DRB when it is determined that it is required to remap from the first DRB to the second DRB for any QoS flow;

The second transmission unit is configured to: when it is determined that the SDAP PDU transmitted on the first DRB is successfully transmitted, transmit the untransmitted SDAP SDU on the second DRB.

A computer apparatus comprising a memory, a processor, and a computer program stored on the memory and operative on the processor, the processor implementing the method as described above.

A computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements a method as described above.

Based on the foregoing description, it can be seen that, by using the solution of the present invention, for any QoS flow, when it is determined that the first DRB needs to be remapped from the first DRB to the second DRB, the already transmitted SDAP PDU can continue to be transmitted on the first DRB. After the SDAP PDU transmitted on the first DRB is successfully transmitted, the untransmitted SDAP SDU is transmitted on the second DRB, thereby providing a feasible QoS flow remapping implementation method and ensuring QoS flow data. Submit in order, etc.

DRAWINGS

FIG. 1 is a schematic diagram of the position and function of a conventional SDAP sublayer.

2 is a schematic diagram of an existing QoS flow remapping.

FIG. 3 is a flowchart of a first embodiment of a method for implementing QoS flow remapping according to the present invention.

FIG. 4 is a flowchart of a second embodiment of a method for implementing QoS flow remapping according to the present invention.

FIG. 5 is a schematic diagram of a process for implementing QoS flow remapping according to the present invention.

FIG. 6 is a schematic structural diagram of an embodiment of an apparatus for implementing QoS flow re-mapping according to the present invention.

FIG. 7 shows a block diagram of an exemplary computer system/server 12 suitable for use in implementing embodiments of the present invention.

Detailed ways

In order to make the technical solutions of the present invention clearer and clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

It is apparent that the described embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 3 is a flowchart of a first embodiment of a method for implementing QoS flow remapping according to the present invention. As shown in FIG. 3, the following specific implementation manners are included.

In 301, for any QoS flow, when it is required to remap from the first DRB to the second DRB, the already transmitted SDAP Protocol Data Unit (PDU) continues to be transmitted on the first DRB.

In 302, when it is determined that the transmission of the SDAP PDU transmitted on the first DRB is successful, the untransmitted SDAP Service Data Unit (SDU, Service Data Uni) is transmitted on the second DRB.

The execution bodies of the above 301 and 302 are both senders. In a practical application, the sending end may be a user equipment (UE, User Equipment) side or a base station side.

For any QoS flow, when it is required to remap from the first DRB to the second DRB, the transmission of the already transmitted SDAP PDU in the QoS flow may continue on the first DRB. And, a timer may be started for the last transmitted SDAP PDU on the first DRB, so that if the transmission of the last transmitted SDAP PDU is determined to be successful before the timer reaches a preset timing, the determinable/determined The transmission of the SDAP PDU transmitted on a DRB is successful.

When the data arrives at the SDAP sublayer, it is a SDAP SDU. The SDAP SDU can be added with a packet header to obtain a SDAP PDU. The transmission is accurate, and the SDAP PDU can be transmitted on the first DRB. When the SDAP PDU arrives at the packet data. When the PDCP (Packet Data Convergence Protocol) sublayer is formed, it becomes a PDCP SDU.

For the already transmitted SDAP PDU, its transmission on the first DRB may be continued, and for the last transmitted SDAP PDU in the already transmitted SDAP PDU, a timer may also be started. Preferably, the timer may be PDCP. Discard timer.

The timing of the timer can be preset, and the specific value can be determined according to actual needs. In addition, the timer can be started when the last transmitted SDAP PDU starts transmission.

During the running of the timer, that is, before the timer reaches the preset timing, if it is determined that the transmission of the last transmitted SDAP PDU is successful, it may be determined that the transmission of the SDAP PDU transmitted on the first DRB is successful. The successful transmission of the last transmitted SDAP PDU may refer to receipt of an acknowledgment (ACK) feedback for the last transmitted SDAP PDU, and the like.

Thereafter, the untransmitted SDAP SDU in the QoS flow can be transmitted on the second DRB. For the receiving end, the received SDAP SDU can be submitted to the upper layer.

If the last transmitted SDAP PDU is not successfully transmitted before the timer expires, the PDCP SDU corresponding to the timer may be discarded, and the PDCP SDU corresponding to the last transmitted SDAP PDU may be discarded, and the untransmitted SDAP SDU in the QoS flow may be discarded. Transmitted on the second DRB. For the receiving end, the received SDAP SDU can be submitted to the upper layer.

When performing uplink data transmission, the transmitting end may be the UE side, and correspondingly, the receiving end may be the base station side. When performing downlink data transmission, the transmitting end may be the base station side, and correspondingly, the receiving end is the UE side.

By setting a timer, it is ensured that the data on the first DRB has sufficient time to transmit, so that the QoS flow data transmitted on the first DRB and the second DRB are separated before and after, avoiding the simultaneous presence of the first DRB and the second DRB. The data caused by the transmission of QoS flow data is confusing, thereby ensuring the sequential delivery of QoS flow data.

Based on the above description, FIG. 4 is a flowchart of a second embodiment of a method for implementing QoS flow remapping according to the present invention. As shown in FIG. 4, the following specific implementation manners are included.

In 401, for any QoS flow, when it is required to remap from the first DRB to the second DRB, the already transmitted SDAP PDU continues to be transmitted on the first DRB, and for the last transmitted SDAP on the first DRB PDU, start timer.

The timer can be a PDCP discard timer.

In 402, before the timer reaches the timing duration, it is determined whether the last transmitted SDAP PDU is successfully transmitted, and if so, 403 is performed, otherwise, 404 is performed.

The successful transmission of the last transmitted SDAP PDU may refer to receiving ACK feedback for the last transmitted SDAP PDU, and the like.

In 403, the untransmitted SDAP SDU in the QoS flow is transmitted on the second DRB, and then the flow ends.

That is, the SDAP SDU in the remaining QoS flow can be started to be transmitted on the second DRB.

The receiving end can deliver the received SDAP SDU to the upper layer.

In 404, the PDCP SDU corresponding to the timer is discarded, and the untransmitted SDAP SDU in the QoS flow is transmitted on the second DRB, and then the process ends.

That is, if the timer expires, the PDCP SDU corresponding to the timer may be discarded, and the SDAP SDU in the remaining QoS flow may be started to be transmitted on the second DRB.

The receiving end can deliver the received SDAP SDU to the upper layer.

Based on the above description, FIG. 5 is a schematic diagram of a QoS flow remapping implementation process according to the present invention. As shown in Figure 5, initially, the data of QoS flow 1 and QoS flow 2 are mapped to DRB1, and the data of QoS flow 3 is mapped to DRB2. Then, QoS flow 2 needs to be remapped from DRB1 to DRB2. The already transmitted SDAP PDU in QoS flow 2 continues to be transmitted on DRB1, and the timer can be started for the last transmitted SDAP PDU in DRB1 in QoS flow 2, if the last transmitted SDAP before the timer expires If the PDU is successfully transmitted, the untransmitted SDAP SDU in QoS flow 2 can be transmitted on DRB2. If the last transmitted SDAP PDU is not successfully transmitted before the timer expires, the PDCP SDU corresponding to the timer can be discarded and the QoS is discarded. The untransmitted SDAP SDU in flow 2 is transmitted on DRB2. After remapping, the data of QoS flow 2 and QoS flow 3 are mapped to DRB2.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are all focused, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In summary, by adopting the solution described in the foregoing method embodiments, the on-demand delivery of QoS flow data can be realized, and the transmission of QoS flow data is not interrupted as much as possible and no packet loss is ensured.

The above is a description of the method embodiment, and the solution of the present invention will be further described below by means of the device embodiment.

FIG. 6 is a schematic structural diagram of an embodiment of an apparatus for implementing QoS flow re-mapping according to the present invention. As shown in FIG. 6, the first transmission unit 601 and the second transmission unit 602 are included.

The first transmission unit 601 is configured to, for any QoS flow, continue to transmit the already transmitted SDAP PDU on the first DRB when it is determined that the first DRB needs to be remapped to the second DRB.

The second transmission unit 602 is configured to: when it is determined that the SDAP PDU transmitted on the first DRB is successfully transmitted, transmit the untransmitted SDAP SDU on the second DRB.

For any QoS flow, when it is required to remap from the first DRB to the second DRB, the first transmission unit 601 may continue its transmission on the first DRB for the already transmitted SDAP PDU in the QoS flow. Moreover, the first transmission unit 601 can start a timer for the last transmitted SDAP PDU on the first DRB, so that if the timer reaches a preset timing, it determines that the last transmitted SDAP PDU is successfully transmitted, and second. Transmission unit 602 can then determine/determine that the transmission of the SDAP PDU transmitted on the first DRB was successful.

Preferably, the timer may be a PDCP discard timer.

During the running of the timer, that is, before the timer reaches the preset timing, the second transmission unit 602 may determine that the transmission of the SDAP PDU transmitted on the first DRB is successful if it determines that the transmission of the last transmitted SDAP PDU is successful. The successful transmission of the last transmitted SDAP PDU may refer to receiving ACK feedback for the last transmitted SDAP PDU, and the like. Further, the second transmission unit 602 can transmit the untransmitted SDAP SDU in the QoS flow on the second DRB. For the receiving end, the received SDAP SDU can be submitted to the upper layer.

If the last transmitted SDAP PDU is not successfully transmitted before the timer expires, the second transmission unit 602 may discard the PDCP SDU corresponding to the timer, and may discard the PDCP SDU corresponding to the last transmitted SDAP PDU, and may The untransmitted SDAP SDU is transmitted on the second DRB. For the receiving end, the received SDAP SDU can be submitted to the upper layer.

For the specific working process of the device embodiment shown in FIG. 6, please refer to the related description in the foregoing method embodiments, and details are not described herein again.

FIG. 7 shows a block diagram of an exemplary computer system/server 12 suitable for use in implementing embodiments of the present invention. The computer system/server 12 shown in FIG. 7 is merely an example and should not impose any limitation on the function and scope of use of the embodiments of the present invention.

As shown in Figure 7, computer system/server 12 is embodied in the form of a general purpose computing device. The components of computer system/server 12 may include, but are not limited to, one or more processors (processing units) 16, memory 28, and a bus 18 that connects different system components, including memory 28 and processor 16.

Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of a variety of bus structures. For example, these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA Bus, a Video Electronics Standards Association (VESA) local bus, and peripheral component interconnects ( PCI) bus.

Computer system/server 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer system/server 12, including both volatile and non-volatile media, removable and non-removable media.

Memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and/or cache memory 32. Computer system/server 12 may further include other removable/non-removable, volatile/non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (not shown in Figure 7, commonly referred to as "hard disk drives"). Although not shown in FIG. 7, a disk drive for reading and writing to a removable non-volatile disk (such as a "floppy disk"), and a removable non-volatile disk (such as a CD-ROM, DVD-ROM) may be provided. Or other optical media) read and write optical drive. In these cases, each drive can be coupled to bus 18 via one or more data medium interfaces. Memory 28 can include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more applications, other programs Modules and program data, each of these examples or some combination may include an implementation of a network environment. Program module 42 typically performs the functions and/or methods of the described embodiments of the present invention.

Computer system/server 12 may also be in communication with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), and may also be in communication with one or more devices that enable a user to interact with the computer system/server 12. And/or in communication with any device (e.g., network card, modem, etc.) that enables the computer system/server 12 to communicate with one or more other computing devices. This communication can take place via an input/output (I/O) interface 22. Also, computer system/server 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet) through network adapter 20. As shown in FIG. 7, network adapter 20 communicates with other modules of computer system/server 12 via bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be utilized in conjunction with computer system/server 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, Tape drives and data backup storage systems.

The processor 16 executes various functional applications and data processing by running a program stored in the memory 28, for example, implementing the method in the embodiment shown in Fig. 2 or 3.

The present invention also discloses a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the method of the embodiment shown in Figures 2 or 3.

Any combination of one or more computer readable media can be utilized. The computer readable medium can be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive lists) of computer readable storage media include: electrical connections having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read only memory (ROM), Erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disk read only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium can be any tangible medium that can contain or store a program, which can be used by or in connection with an instruction execution system, apparatus or device.

A computer readable signal medium may include a data signal that is propagated in the baseband or as part of a carrier, carrying computer readable program code. Such propagated data signals can take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing. The computer readable signal medium can also be any computer readable medium other than a computer readable storage medium, which can transmit, propagate, or transport a program for use by or in connection with the instruction execution system, apparatus, or device. .

Program code embodied on a computer readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including an object oriented programming language such as Java, Smalltalk, C++, and conventional A procedural programming language - such as the "C" language or a similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer, partly on the remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (eg, using an Internet service provider) Internet connection).

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method and the like may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division, and the actual implementation may have another division manner.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims

A method for implementing quality of service flow re-mapping, comprising:

For any quality of service flow QoS flow, when it is determined that the first data radio bearer DRB needs to be remapped to the second DRB, the already transmitted service data adaptation protocol protocol data unit SDAP PDU continues to be transmitted on the first DRB. ;

When it is determined that the transmission of the SDAP PDU transmitted on the first DRB is successful, the untransmitted service data adaptation protocol service data unit SDAP SDU is transmitted on the second DRB.
The method of claim 1 wherein

The method further includes: starting a timer for the last transmitted SDAP PDU on the first DRB;

Determining that the transmission of the SDAP PDU transmitted on the first DRB is successful includes:

If it is determined that the transmission of the last transmitted SDAP PDU is successful before the timer reaches a preset timing, it is determined that the transmission of the SDAP PDU transmitted on the first DRB is successful.
The method of claim 2 wherein:

The determining that the last transmitted SDAP PDU transmission succeeds comprises:

An acknowledgement ACK feedback is received for the last transmitted SDAP PDU.
The method of claim 2 wherein:

The timer includes: a packet data convergence protocol discarding timer PDCP discard timer.
The method of claim 2 wherein:

The method further includes:

If the last transmitted SDAP PDU is not successfully transmitted before the timer expires, the packet data convergence protocol service data unit PDCP SDU corresponding to the timer is discarded, and the untransmitted SDAP SDU is in the second Transfer on the DRB.
A service quality flow re-mapping implementation device, comprising: a first transmission unit and a second transmission unit;

The first transmission unit is configured to, for any quality of service flow QoS flow, when it is determined that the first data radio bearer DRB needs to be remapped to the second DRB, the service data that has been transmitted is adapted to the protocol data unit SDAP PDU. Continue to transmit on the first DRB;

The second transmission unit is configured to, after determining that the SDAP PDU transmitted on the first DRB is successfully transmitted, transmit the untransmitted service data adaptation protocol service data unit SDAP SDU on the second DRB.
The device of claim 6 wherein:

The first transmission unit is further configured to start a timer for a last transmitted SDAP PDU on the first DRB;

If it is determined that the transmission of the last transmitted SDAP PDU is successful before the timer reaches a preset timing, the second transmission unit determines that the transmission of the SDAP PDU transmitted on the first DRB is successful.
The device of claim 7 wherein:

The second transmission unit receives an acknowledgement ACK feedback for the last transmitted SDAP PDU, and determines that the last transmitted SDAP PDU transmission is successful.
The device of claim 7 wherein:

The timer includes: a packet data convergence protocol discarding timer PDCP discard timer.
The device of claim 7 wherein:

The second transmission unit is further configured to: if the last transmitted SDAP PDU is not successfully transmitted before the timer expires, discard the packet data convergence protocol service data unit PDCP SDU corresponding to the timer, and The untransmitted SDAP SDU is transmitted on the second DRB.
A computer device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor executes the program as claimed in claims 1 to 5 The method of any of the preceding claims.
A computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement the method of any one of claims 1 to 5.