WO2019028880A1 - Data processing method and related device - Google Patents

Abstract

The present application discloses a data processing method and related apparatus for use in a communication device including a Service Data Adaptation Protocol (SDAP) layer, the method comprising: the communication device generating a first protocol data unit (PDU), The first PDU is used to indicate that the SDAP data PDU header size changes; the communication device sends the first PDU. The problem of RoHC error can be avoided by adopting the embodiment of the present application.

Description

Data processing method and related equipment Technical field

The present application relates to the field of communications technologies, and in particular, to a data processing method and related devices.

Background technique

At present, a new protocol layer is added to the new air interface NR/5G, namely the Service Data Adaptation Protocol (SDAP) layer. The SDAP layer is the Core Network (CN) to the Radio Access Network (Radio Access). NetWork, RAN) The first protocol layer. The SDAP layer is mainly responsible for mapping high-level Quality of Service (QoS) flows to different Data Radio Bearers (DRBs).

The SDAP layer can support a transparent transmission method. For example, the SDAP protocol data unit (PDU) can be directly delivered to the Packet Data Convergence Protocol (PDCP) or SDAP without adding the header of the SDAP layer. The header size of the data PDU changes dynamically. The PDCP layer has the Robust Header Compression (RoHC) function. In the Long Term Evolution (LTE), RoHC is for the Internet Protocol (IP) header. The RoHC design considers the IP header for a long time. It is a fixed-size header. In the NR/5G, due to the introduction of the SDAP layer, a SDAP header is added before the IP header. Since the SDAP header is a dynamically changing header, it may cause RoHC errors.

Summary of the invention

The embodiment of the present application provides a data processing method and related equipment, which are used to avoid the problem that the RoHC is erroneous.

In a first aspect, an embodiment of the present invention provides a data processing method, which is applied to a communications device that includes an SDAP layer, and includes:

The communication device generates a first PDU, where the first PDU is used to indicate that a size of a header of the SDAP data PDU changes;

The communication device transmits the first PDU.

In a second aspect, the embodiment of the present invention provides a data processing method, which is applied to a communication device including an SDAP layer, and includes:

The communication device receives a first PDU from another communication device;

The communication device determines that the size of the SDAP data PDU header changes according to the first PDU.

In a third aspect, an embodiment of the present invention provides a communications device, where the communications device includes a SDAP layer, including a processing unit and a communications unit, where:

The processing unit is configured to generate a first PDU, where the first PDU is used to indicate that a size of a header of the SDAP data PDU changes; and the first PDU is sent by the communication unit.

In a fourth aspect, an embodiment of the present invention provides a communications device, where the communications device includes a SDAP layer, including a processing unit and a communications unit, where:

The processing unit receives, by the communication unit, a first PDU from another communication device; and determines, according to the first PDU, that a size of a SDAP data PDU header changes.

In a fifth aspect, an embodiment of the present invention provides a communication device, including one or more processors, one or more memories, one or more transceivers, and one or more programs, the one or more programs being Stored in the memory and configured to be executed by the one or more processors, the program comprising instructions for performing the steps in the method of the first aspect.

In a sixth aspect, an embodiment of the present invention provides a communication device, including one or more processors, one or more memories, one or more transceivers, and one or more programs, the one or more programs being Stored in the memory and configured to be executed by the one or more processors, the program comprising instructions for performing the steps in the method of the second aspect.

In a seventh aspect, an embodiment of the present invention provides a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes the computer to perform the method of the first aspect.

In an eighth aspect, an embodiment of the present invention provides a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes the computer to perform the method of the first aspect.

In a ninth aspect, an embodiment of the present invention provides a computer program product, where the computer program product includes a non-transitory computer readable storage medium storing a computer program, the computer program being operable The computer is caused to perform the method as described in the first aspect.

In a tenth aspect, an embodiment of the present invention provides a computer program product, comprising: a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the first aspect The method described.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

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 embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the drawings without any creative work for those skilled in the art.

1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

2 is a schematic flowchart of a data processing method according to an embodiment of the present application;

3 is a schematic structural diagram of a communication device according to an embodiment of the present application;

4 is a schematic structural diagram of another communication device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is an embodiment of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope shall fall within the scope of the application.

The details are described below separately.

The terms "first", "second", "third", and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a specific order. . Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example contains one The processes, methods, systems, products, or devices of the series of steps or units are not limited to the listed steps or units, but optionally also include steps or units not listed, or alternatively also for such processes, Other steps or units inherent to the method, product or device.

References to "an embodiment" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.

Embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention. The network architecture shown in FIG. 1 includes a first communication device and a second communication device. The first communication device may be a user device or a The network device, the second communication device is also a user device or a network device. As shown in FIG. 1, the first communication device and the second communication device each include an SDAP layer, a PDCP layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer. .

The first communication device transmits data to the second communication device, where the specific process is: adding a packet header to the SDAP layer of the first communication device to generate a SDAP data PDU; and the SDAP layer of the first communication device sends the SDAP data PDU to the first The PDCP layer of the communication device, the SDAP data PDU adds a header to the PDCP layer of the first communication device to generate a PDCP data PDU; the PDCP layer of the first communication device transmits the PDCP data PDU to the RLC layer of the first communication device, the PDCP data PDU Adding a header to the RLC layer of the first communication device to generate an RLC PDU; the RLC layer of the first communication device sends the RLC PDU to the MAC layer of the first communication device, and the RLC PDU adds a header at the MAC layer of the first communication device to Generating a MAC PDU, the MAC layer of the first communication device sends a MAC PDU; the MAC layer of the second communication device receives the MAC PDU sent by the MAC layer of the first communication device, and the MAC PDU is decompressed at the MAC layer of the second communication device to obtain RLC PDU, the MAC layer of the second communication device sends the RLC PDU to the RLC layer of the second communication device; the RLC PDU is decompressed at the RLC layer of the second communication device to obtain the PDCP data PDU RLC layer of the second communication device transmits the PDCP data PDU to the PDCP layer of the second communication device; decompressed PDCP data PDU in the PDCP layer of the second communication device to obtain data PDU SDAP, the second The MAC layer of the communication device transmits the SDAP data PDU to the SDAP layer of the second communication device, and finally the SDAP data PDU is decompressed at the SDAP layer of the second communication device to obtain data transmitted by the first communication device to the second communication device.

The RoHC function of the PDCP layer is that the IP header is a fixed-size header for a long time. The PDCP layer of the second communication device has a RoHC function, and after receiving the PDCP data PDU, the PDCP layer of the second communication device considers that the PDCP data PDU received by the second communication device is consistent with the header size of the previous PDCP data PDU. Therefore, the PDCP layer of the second communication device decompresses the received PDCP data PDU based on the ROHC decompression algorithm used by the previous PDCP data PDU, and the SDAP header is a dynamically changing header. This will cause an error in RoHC. For example, after the PDCP layer of the second communication device successfully decompresses the PDCP data PDU-1, the PDCP layer of the second communication device receives the PDCP data PDU-2, and the header size of the PDCP data PDU-2 is different from the PDCP data PDU-1. The header size, if the PDCP layer of the second communication device decompresses the PDCP data PDU-1 based on the ROHC decompression algorithm 1, since the header size of the PDCP data PDU-2 is different from the header size of the PDCP data PDU-1, When the PDCP layer of the second communication device still decompresses the PDCP data PDU-2 using the ROHC decompression algorithm 1, an error occurs in the RoHC.

In order to solve the above problem, in the present solution, the first communication device generates a PDU different from the normal data PDU, and the PDU is used to indicate that the size of the SDAP data PDU header changes, and then the first communication device sends the PDU. After receiving the PDU, the second communication device may determine, according to the PDU, that the SDAP data PDU header size changes, so that the PDCP layer of the subsequent second communication device follows the new decompression after receiving the PDCP data PDU. The algorithm decompresses, thus avoiding the problem of RoHC error.

The user equipment is a device that provides voice and/or data connectivity to the user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like. Common user devices include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.

The network device refers to a node device on the network side. For example, the network device may be a radio access network (RAN) device on the access network side of the cellular network, and the so-called RAN device is a device device. Devices that enter the wireless network, including but not limited to: evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS) a home base station (for example, Home evolved NodeB, or Home Node B, HNB), a BaseBand Unit (BBU), and a Mobility Management Entity (MME); for example, the network device may also be a wireless local area network (Wireless Local) A node device in an Area Network (WLAN), such as an access controller (AC), a gateway, or a WIFI access point (AP).

The data processing method provided by the embodiment of the present application is described in detail below with reference to the network architecture shown in FIG.

Referring to FIG. 2, FIG. 2 is a schematic flowchart of a data processing method according to an embodiment of the present disclosure, where the method includes:

S201. The first communications device generates a first PDU, where the first PDU is used to indicate that a size of a header of the SDAP data PDU changes.

S202. The first communications device sends the first PDU.

S203. The second communications device receives the first PDU from the first communications device. The second communications device determines, according to the first PDU, that the SDAP data PDU header size changes.

The first PDU may be a SDAP Control PDU, or a PDCP Control PDU, or a PDCP Data PDU, and the like.

The first PDU is distinguished from the normal data PDU. For example, the header of the first PDU has one more D/C domain than the header of the normal data PDU. For another example, the first PDU is a PDCP data PDU, and the header of the normal PDCP data PDU includes a reserved bit of 0, then the at least one reserved bit included in the header of the first PDU is not 0, and so on.

Specifically, the first PDU is a SDAP control PDU. When the size of the SDAP PDU header changes, the first communication device generates an SDAP control PDU, where the SDAP control PDU is used to indicate that the SDAP data PDU header size changes, and the first communication device Sending the SDAP control PDU, after the second communication device receives the SDAP control PDU, the second communication device can determine that the size of the SDAP data PDU header changes according to the SDAP control PDU, so that the PDCP layer of the subsequent second communication device is After receiving the PDCP data PDU, it is decompressed according to the new decompression algorithm, thereby avoiding the problem of RoHC error.

In an example, the header of the first PDU includes a first indication field, and the first indication field is used to indicate that the first PDU is a SDAP Control PDU.

Specifically, in order for the SDAP layer of the second communication device to recognize that the first PDU is a SDAP Control PDU instead of a SDAP Data PDU. In this solution, an indication field (such as D/C) is added to the header of the first PDU with respect to the SDAP data PDU, and the indication field is used to indicate that the first PDU is a SDAP control PDU. For example, suppose D/C, 1 bit, if the value of D/C is 0 to indicate a data PDU, and if the value of D/C is 1 to indicate a control PDU. The PDU of the SDAP layer is a data PDU and has no control PDU. In this solution, the first PDU is a control PDU specifically for indicating the change of the header size of the SDAP layer data PDU, so as to avoid ambiguity of the receiving end device. After the SDAP layer of the second communication device receives the first PDU, the SDAP layer of the second communication device can know that the first PDU is a SDAP control PDU by using the indication field included in the packet header of the first PDU, and then the second communication device is It can be known that the header size of the SDAP data PDU changes.

In an example, the first PDU is a SDAP control PDU, the first PDU has a header size equal to a header size of the second PDU, and the second PDU is sent by the SDAP layer before the SDAP data PDU header size changes. The last SDAP data PDU.

Specifically, it is assumed that the header size of the SDAP data PDU sent by the SDAP layer of the first communication device is changed from 2 bytes to 0 bytes, and the SDAP data PDUs having a header size of 2 bytes are in the order of the transmission time: SDAP data PDU-1, SDAP data PDU. -2 and SDAP data PDU-3, SDAP data PDUs with a header size of 0 bytes are in the order of transmission time: SDAP data PDU-4, SDAP data PDU-5, and SDAP PD-6. It can be seen that the last header size of the first communication device is 2 bytes of SDAP data PDU-3 (ie, the second PDU). Since the header size of the SDAP data PDU-3 is 2 bytes, the header size of the first PDU is also It is 2byte.

Since the RoCH decompression is performed at the PDCP layer of the receiving device (ie, the second communication device), the PDCP layer can only send the packet to the SDAP layer after the compression is completed. Before that, the PDCP layer considers that the header size has not changed. If the header of the SDAP control PDU (that is, the first PDU) is inconsistent, the PDCP may still generate an error when decompressing. Therefore, in this solution, the header size of the first PDU is designed to be the same as the header size of the second PDU, thereby avoiding RoCH sent an error.

In an example, the sending time of the second PDU is adjacent to the sending time of the first PDU, and the sending time of the second PDU is earlier than the sending time of the first PDU.

Specifically, it is assumed that the header size of the SDAP data PDU sent by the SDAP layer of the first communication device is changed from 2 bytes to 0 bytes, and the SDAP data PDUs having a header size of 2 bytes are in the order of the transmission time: SDAP data PDU-1, SDAP data PDU. -2 and SDAP PD-3, SDAP data PDUs with a header size of 0 bytes are in the order of transmission time: SDAP data PDU-4, SDAP data PDU-5, and SDAP PD-6. Then the SDAP layer of the first communication device sends the PDU in the order of: SDAP data PDU-1 to SDAP data PDU-2 to SDAP PD-3 (ie second PDU) to the first PDU to SDAP data PDU-4 to SDAP data PDU -5 to SDAP PD-6.

In an example, the header of the first PDU includes at least one second indication field, and the at least one second indication field is used to indicate that the first PDU is a PDCP Control PDU.

Further, the header of the first PDU further includes a control PDU type field, where the control PDU type field is used to indicate that the first PDU is a PDCP control PDU for indicating a change in a header size of a SDAP data PDU.

Specifically, in order for the PDCP layer of the second communication device to recognize that the first PDU is a PDCP Control PDU instead of a PDCP Data PDU. In the present solution, at least one indication field (such as D/C) included in the header of the first PDU is set to 0 with respect to the PDCP data PDU to indicate that the first PDU is a PDCP Control PDU. In addition, the header of the first PDU further includes a control PDU type field (such as a 3-bit control PDU type field, and the 3-bit control PDU type field is used to indicate different types of control PDUs). In the present scheme, the first PDU is indicated by this control PDU type field to be a PDCP Control PDU for indicating a change in the header size of the SDAP Data PDU. The specific method includes: adding a mapping relationship in the 3-bit control PDU type field, for example, 011 corresponding to the defined control PDU type of the packet header size change. After the PDCP layer of the second communication device receives the first PDU, the PDCP layer of the second communication device can know that the first PDU is a PDCP control PDU by using at least one indication field included in the packet header of the first PDU, and then control the PDU type. The domain knows that the first PDU is a PDCP control PDU for indicating a change in the header size of the SDAP data PDU, and thus knows that the size of the header of the SDAP data PDU changes.

In an example, the first PDU includes a PDCP control PDU, a sending time of the first PDU is adjacent to a sending time of the third PDU, and a sending time of the third PDU is earlier than the first The transmission time of the PDU, which is the last SDAP data PDU sent by the SDAP layer before the size of the header of the SDAP data PDU changes.

Specifically, it is assumed that the header size of the SDAP data PDU sent by the SDAP layer of the first communication device is changed from 2 bytes to 0 bytes, and the SDAP data PDUs having a header size of 2 bytes are in the order of the transmission time: SDAP data PDU-1, SDAP data PDU. -2 and SDAP PD-3, SDAP data PDUs with a header size of 0 bytes are in the order of transmission time: SDAP data PDU-4, SDAP data PDU-5, and SDAP PD-6. Then the SDAP layer of the first communication device transmits the SDAP data PDU: SDAP data PDU-1 to SDAP data PDU-2 to SDAP PD-3 to SDAP data PDU-4 to SDAP data PDU-5 to SDAP PD-6. After the PDCP layer of the first communication device receives the last SDAP data PDU (ie, SDAP PD-3) with a header size of 2 bytes transmitted by the SDAP layer of the first communication device, the PDCP layer of the first communication device will receive the packet header size. The 2 byte SDAP data PDU is processed to generate a PDCP data PDU, which is then transmitted. The PDCP layer of the first communication device generates a first PDU and transmits the first PDU. The PDCP layer of the first communication device immediately processes the received SDAP data PDU (ie, SDAP PD-4) with a header size of 0 bytes to form a PDCP data PDU, and transmits the PDCP data PDU.

In an example, the first PDU includes a PDCP data PDU, and a header of the first PDU includes a third indication field, where the third indication field is used to indicate that a size of a header of the SDAP data PDU is changed.

Specifically, an R domain is replaced in the header of the PDCP data PDU, such as a 1-bit field indicating the change of the packet header (ie, the third indication field), if the PDCP layer of the second communication device receives the first PDU before receiving the first PDU. The value of this field of the PDCP data PDU is always 1, and if the value of this field of the first PDU becomes 0, it indicates that the header of the SDAP data PDU has changed.

In an example, the first PDU includes a PDCP Control PDU, a header of the first PDU is a fourth indication field, and the fourth indication field is used to indicate a size of a new SDAP Data PDU header.

Specifically, in order for the PDCP layer of the second communication device to recognize that the first PDU is a PDCP Control PDU instead of a PDCP Data PDU. In this solution, with respect to the PDCP data PDU, a certain domain (such as an R domain) included in the header of the first PDU is used as an indication domain, and the indication domain is used to indicate the size of the new SDAP data PDU header, and the second communication After receiving the first PDU, the PDCP layer of the second communication device can know the size of the new SDAP data PDU header by using the indication field included in the header of the first PDU, and thus can know that the SDAP data PDU header is large. Small changes.

In an example, the first PDU is a last PDCP data PDU sent by the PDCP layer before the SDAP data PDU header size changes, and the PDCP data PDU includes reserved bits, where the reserved bits are used. Indicates that the SDAP data PDU header size has changed.

Specifically, it is assumed that the header size of the SDAP data PDU sent by the SDAP layer of the first communication device is changed from 2 bytes to 0 bytes, and the SDAP data PDUs having a header size of 2 bytes are in the order of the transmission time: SDAP data PDU-1, SDAP data PDU. -2 and SDAP PD-3, SDAP data PDUs with a header size of 0 bytes are in the order of transmission time: SDAP data PDU-4, SDAP data PDU-5, and SDAP PD-6. Then the SDAP layer of the first communication device transmits the SDAP data PDU: SDAP data PDU-1 to SDAP data PDU-2 to SDAP PD-3 to SDAP data PDU-4 to SDAP data PDU-5 to SDAP PD-6. The SDAP layer of the first communication device sends a SDAP data PDU (ie, SDAP PD-4) with a header size of 0 bytes immediately after transmitting the last SDAP data PDU (ie, SDAP PD-3) with a header size of 2 bytes. After receiving the SDAP PD-3 by the PDCP layer of the first communication device, the PDCP layer of the first communication device processes the SDAP PD-3 to generate a PDCP data PDU (ie, the first PDU), and transmits the PDCP data PDU. The PDCP layer of the first communication device then processes the SDAP PD-4 to generate a PDCP Data PDU, which is transmitted.

The reserved bits are usually meaningless because the reserved bits are included in the header of the PDCP data PDU. In this solution, the reserved bits can be used to indicate that the size of the SDAP data PDU header changes. At least one of the reserved bits is used to indicate that the header size of the SDAP data PDU changes. When one reserved bit is used, only the scenario where the SDAP packet header changes only two options is indicated; when two reserved bits are used, the scenario of four SDAP packet header changes can be indicated, and so on.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in the figure, the communication device is the first method described in the foregoing method. a communication device comprising one or more processors, one or more memories, one or more transceivers, and one or more programs, wherein the one or more programs are stored in the memory, And configured to be executed by the one or more processors, the program comprising for performing the following Instruction of the step;

Generating a first protocol data unit (PDU), where the first PDU is used to indicate that a size of a header of the SDAP data PDU changes;

The communication device transmits the first PDU.

In an example, the header of the first PDU includes a first indication field, and the first indication field is used to indicate that the first PDU is a SDAP Control PDU.

In an example, the first PDU is a SDAP control PDU, the first PDU has a header size equal to a header size of the second PDU, and the second PDU is sent by the SDAP layer before the SDAP data PDU header size changes. The last SDAP data PDU.

In an example, the sending time of the second PDU is adjacent to the sending time of the first PDU, and the sending time of the second PDU is earlier than the sending time of the first PDU.

In an example, the header of the first PDU includes at least one second indication field, and the at least one second indication field is used to indicate that the first PDU is a Packet Data Convergence Protocol (PDCP) Control PDU.

In an example, the header of the first PDU further includes a control PDU type field, where the control PDU type field is used to indicate that the first PDU is a PDCP control PDU for indicating a change in a header size of a SDAP data PDU.

In an example, the sending time of the first PDU is adjacent to the sending time of the third PDU, and the sending time of the third PDU is earlier than the sending time of the first PDU, the third PDU Is the last SDAP data PDU sent by the SDAP layer before the SDAP data PDU header size changes.

In an example, the first PDU is a PDCP data PDU, and the first PDU header includes a third indication field, where the third indication field is used to indicate that the SDAP data PDU header size changes.

In an example, the first PDU is a last PDCP data PDU sent by the PDCP layer before the SDAP data PDU header size changes, and the PDCP data PDU includes reserved bits, where the reserved bits are used. Indicates that the SDAP data PDU header size has changed.

It should be noted that the specific implementation manner of the content described in this embodiment can be referred to the foregoing method, and is not described herein.

FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in the figure, the communication device is the second method described in the foregoing method. a communication device comprising one or more processors, one or more memories, one or more transceivers, and one or more programs, wherein the one or more programs are stored in the memory, And configured to be executed by the one or more processors, the program comprising instructions for performing the following steps;

Receiving a first PDU from another communication device;

Determining a change in the header size of the SDAP data PDU according to the first PDU.

In an example, the header of the first PDU includes a first indication field, and the first indication field is used to indicate that the first PDU is a SDAP Control PDU.

In an example, the first PDU is a SDAP control PDU, the first PDU has a header size equal to a header size of the second PDU, and the second PDU is sent by the SDAP layer before the SDAP data PDU header size changes. The last SDAP data PDU.

In an example, the sending time of the second PDU is adjacent to the sending time of the first PDU, and the sending time of the second PDU is earlier than the sending time of the first PDU.

In an example, the header of the first PDU includes at least one second indication field, and the at least one second indication field is used to indicate that the first PDU is a Packet Data Convergence Protocol (PDCP) Control PDU.

In an example, the header of the first PDU further includes a control PDU type field, where the control PDU type field is used to indicate that the first PDU is a PDCP control PDU for indicating a change in a header size of a SDAP data PDU.

In an example, the sending time of the first PDU is adjacent to the sending time of the third PDU, and the sending time of the third PDU is earlier than the sending time of the first PDU, the third PDU Is the last SDAP data PDU sent by the SDAP layer before the SDAP data PDU header size changes.

In an example, the first PDU is a PDCP data PDU, and the first PDU header includes a third indication field, where the third indication field is used to indicate that the SDAP data PDU header size changes.

In an example, the first PDU is a last PDCP data PDU sent by the PDCP layer before the SDAP data PDU header size changes, and the PDCP data PDU includes reserved bits, where the reserved bits are used. Indicates that the SDAP data PDU header size has changed.

It should be noted that the specific implementation manner of the content described in this embodiment can be referred to the foregoing method, and is not described herein.

The foregoing describes the solution of the embodiment of the present invention mainly from the perspective of interaction between the network elements. It can be understood that the communication device includes corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions. Those skilled in the art will readily appreciate that the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The embodiment of the present invention may divide the functional unit into the communication device according to the foregoing method example. For example, each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.

In the case of employing an integrated unit or module, FIG. 5 shows a block diagram of one possible functional unit composition of the communication device involved in the above embodiment. The communication device is the first communication device described in the foregoing method embodiment, and the communication device 500 includes: a processing unit 501, a communication unit 502, and a storage unit 503. The processing unit 501 is configured to control and manage the actions of the communication device, the communication unit 502 is configured to support communication between the communication device and other devices, and the storage unit 503 is configured to store program codes and data of the communication device. It should be noted that the processing unit 501, the communication unit 502, and the storage unit 503 are used to support the steps performed by the above method, and are not described herein.

The processing unit 501 can be a processor or a controller, and can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication unit 502 can be a transceiver, a transceiver circuit, a radio frequency chip, etc., and the storage unit 503 can be a memory.

When the processing unit 501 is a processor, the communication unit 502 is a communication interface, and the storage unit 503 is a memory, the communication device according to the embodiment of the present invention may be the communication device shown in FIG.

In the case of employing an integrated unit or module, FIG. 6 shows a block diagram of one possible functional unit configuration of the communication device involved in the above embodiment. The communication device is the second communication device described in the foregoing method embodiment, and the communication device 600 includes: a processing unit 601, a communication unit 602, and a storage unit 603. The processing unit 601 is configured to control and manage the actions of the communication device, the communication unit 602 is configured to support communication between the communication device and other devices, and the storage unit 603 is configured to store program codes and data of the communication device. It should be noted that the processing unit 601, the communication unit 602, and the storage unit 603 are used to support the steps performed by the above method, and are not described herein.

The processing unit 601 can be a processor or a controller, and can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication unit 602 can be a transceiver, a transceiver circuit, a radio frequency chip, etc., and the storage unit 603 can be a memory.

When the processing unit 601 is a processor, the communication unit 602 is a communication interface, and the storage unit 603 is a memory, the communication device according to the embodiment of the present invention may be the communication device shown in FIG.

The embodiment of the invention further provides a user equipment, as shown in FIG. 7 , for convenience of description, only For a part related to the embodiment of the present invention, the specific technical details are not disclosed, please refer to the method part of the embodiment of the present invention. The user equipment can be any user equipment including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a car computer, and the like:

FIG. 7 is a block diagram showing a partial structure of a mobile phone related to a user equipment provided by an embodiment of the present invention. Referring to FIG. 7, the mobile phone includes: a radio frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (WiFi) module 970, and a processor 980. And power supply 990 and other components. It will be understood by those skilled in the art that the structure of the handset shown in FIG. 7 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different components may be arranged.

The following describes the components of the mobile phone in detail with reference to FIG. 7:

The RF circuit 910 can be used for receiving and transmitting information. Generally, RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 910 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 920. The memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the mobile phone, and the like. Moreover, memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 930 may include fingerprint recognition Module 931 and other input devices 932. The fingerprint identification module 931 can collect fingerprint data of the user. In addition to the fingerprint recognition module 931, the input unit 930 may also include other input devices 932. Specifically, other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display unit 940 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 940 can include a display screen 941. Alternatively, the display screen 941 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Although in FIG. 7, the fingerprint recognition module 931 and the display screen 941 function as two separate components to implement the input and input functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 may be Integrated to achieve the input and playback functions of the phone.

The handset may also include at least one type of sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.

An audio circuit 960, a speaker 961, and a microphone 962 can provide an audio interface between the user and the handset. The audio circuit 960 can transmit the converted electrical data of the received audio data to the speaker 961 for conversion to the sound signal by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal by the audio circuit 960. After receiving, it is converted into audio data, and then processed by the audio data playback processor 980, sent to the other mobile phone via the RF circuit 910, or played back to the memory 920 for further processing.

WiFi is a short-range wireless transmission technology, and the mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970, which provides users with wireless broadband Internet access. Although FIG. 7 shows the WiFi module 970, it can be understood that it does not belong to the mobile phone. It must be constructed and can be omitted as needed within the scope of not changing the essence of the invention.

The processor 980 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 920, and invoking data stored in the memory 920, executing The phone's various functions and processing data, so that the overall monitoring of the phone. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 980.

The handset also includes a power source 990 (such as a battery) that supplies power to the various components. Preferably, the power source can be logically coupled to the processor 980 through a power management system to manage functions such as charging, discharging, and power management through the power management system.

Although not shown, the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.

In the foregoing embodiment shown in FIG. 2, the flow on the communication device side in each step method may be implemented based on the structure of the mobile phone.

In the foregoing embodiments shown in FIG. 5 and FIG. 6, each unit function can be implemented based on the structure of the mobile phone.

The embodiment of the present invention further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the first embodiment of the method as described above Some or all of the steps described in a communication device.

The embodiment of the present invention further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the first embodiment of the method as described above Part or all of the steps described in the communication device.

Embodiments of the present invention also provide a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the method as described above Some or all of the steps described in a communication device. The computer program product can be a software installation package.

The embodiment of the invention further provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the method embodiment as described above Some or all of the steps described in the second communication device. The computer program product can be a software installation package.

The steps of the method or algorithm described in the embodiments of the present invention may be implemented in a hardware manner, or may be implemented by a processor executing software instructions. The software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may also exist as discrete components in the access network device, the target network device, or the core network device.

Those skilled in the art should appreciate that in one or more of the above examples, the functions described in the embodiments of the present invention may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)). )Wait.

The specific embodiments described above, the objects, technical solutions and beneficial effects of the embodiments of the present invention The foregoing is a detailed description of the embodiments of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc., which are made above, are intended to be included within the scope of the present invention.

Claims (20)

A data processing method, which is applied to a communication device including a Service Data Adaptation Protocol (SDAP) layer, including: The communication device generates a first protocol data unit (PDU), where the first PDU is used to indicate that a size of a header of the SDAP data PDU changes; The communication device transmits the first PDU. The method according to claim 1, wherein the header of the first PDU comprises a first indication field, and the first indication field is used to indicate that the first PDU is a SDAP Control PDU. The method according to claim 1 or 2, wherein the first PDU is a SDAP Control PDU, the header size of the first PDU is equal to the header size of the second PDU, and the second PDU is in the SDAP data. The last SDAP data PDU sent by the SDAP layer before the PDU header size changes. The method according to claim 3, wherein a sending time of the second PDU is adjacent to a sending time of the first PDU, and a sending time of the second PDU is earlier than a first PDU. Send time. The method according to claim 1, wherein the header of the first PDU comprises at least one second indication field, and the at least one second indication field is used to indicate that the first PDU is a packet data convergence protocol ( PDCP) Controls the PDU. The method according to claim 5, wherein the header of the first PDU further comprises a control PDU type field, and the control PDU type field is used to indicate that the first PDU is used to indicate a header size of the SDAP data PDU. A changed PDCP Control PDU. Method according to claim 5 or 6, characterized in that the transmission of the first PDU The time is adjacent to the sending time of the third PDU, and the sending time of the third PDU is earlier than the sending time of the first PDU, and the third PDU is before the size of the header of the SDAP data PDU changes. The last SDAP data PDU sent by the SDAP layer. The method according to claim 1, wherein the first PDU is a PDCP data PDU, the header of the first PDU includes a third indication field, and the third indication field is used to indicate a header size of a SDAP data PDU. A change has occurred. The method according to claim 1, wherein the first PDU is a last PDCP data PDU sent by the PDCP layer before the header size of the SDAP data PDU changes, and the PDCP data PDU includes reserved bits. The reserved bit is used to indicate that the size of the header of the SDAP data PDU changes. A communication device, characterized in that the communication device comprises a Service Data Adaptation Protocol (SDAP) layer, comprising a processing unit and a communication unit, wherein: The processing unit is configured to generate a first protocol data unit (PDU), where the first PDU is used to indicate that a size of a header of the SDAP data PDU changes; and the first PDU is sent by the communication unit. The communication device according to claim 10, wherein the header of the first PDU comprises a first indication field, and the first indication field is used to indicate that the first PDU is a SDAP Control PDU. The communication device according to claim 10 or 11, wherein the first PDU is a SDAP Control PDU, the header size of the first PDU is equal to the header size of the second PDU, and the second PDU is in the SDAP. The last SDAP data PDU sent by the SDAP layer before the data PDU header size changes. The communication device according to claim 12, wherein said second PDU is transmitted The sending time is adjacent to the sending time of the first PDU, and the sending time of the second PDU is earlier than the sending time of the first PDU. The communication device according to claim 10, wherein the header of the first PDU includes at least one second indication field, and the at least one second indication field is used to indicate that the first PDU is a packet data convergence protocol. (PDCP) Controls the PDU. The communication device according to claim 14, wherein the header of the first PDU further comprises a control PDU type field, and the control PDU type field is used to indicate that the first PDU is used to indicate a SDAP data PDU header. A PDCP control PDU whose size changes. The communication device according to claim 14 or 15, wherein the transmission time of the first PDU is adjacent to the transmission time of the third PDU, and the transmission time of the third PDU is earlier than the The transmission time of a PDU, which is the last SDAP data PDU sent by the SDAP layer before the header size of the SDAP data PDU changes. The communication device according to claim 10, wherein the first PDU is a PDCP data PDU, the header of the first PDU includes a third indication field, and the third indication field is used to indicate a SDAP data PDU header. The size has changed. The communication device according to claim 10, wherein the first PDU is a last PDCP data PDU sent by the PDCP layer before the header size of the SDAP data PDU changes, and the PDCP data PDU includes a reservation. Bit, the reserved bit is used to indicate that the SDAP data PDU header size changes. A communication device, comprising: one or more processors, one or more memories, one or more transceivers, and one or more programs, the one or more programs being stored in the memory And configured to be executed by the one or more processors, the program comprising instructions for performing the steps in the method of any of claims 1-9. A computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method of any one of claims 1-9.

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