TW202027478A - Method for processing data packet, entity and storage medium - Google Patents

Abstract

Disclosed are a method for processing a data packet. The method comprises: a first protocol layer entity dividing a first SDU into at least two SDU segments based on the size of the received first SDU; and the first protocol layer entity indicating that the SDU segment is a data segment of the first SDU. Also provided are another data packet processing method, an entity and a storage medium.

Description

Data packet processing method, entity and storage medium

The present invention relates to the field of wireless communication technology, in particular to a data packet processing method, entity and storage medium.

In the wireless (New Radio, NR) Rel-15 system, the size of the largest Service Data Unit (SDU) that the Packet Data Convergence Protocol (PDCP) layer can support is 9K bytes; therefore When the data sent from the Radio Resource Control (Radio Resource Control, RRC) layer or the application layer to the PDCP layer exceeds the size of the largest SDU supported by the PDCP layer, the data cannot be effectively transmitted.

In order to solve the above technical problems, the embodiments of the present invention provide a data packet processing method, entity and storage medium, so that when the data sent from the radio resource control RRC layer or the application layer to the PDCP layer exceeds the size of the largest SDU supported by the PDCP layer, Data can be effectively transmitted.

In a first aspect, an embodiment of the present invention provides a data packet processing method, including: a first protocol layer entity divides the first SDU into at least two SDU fragments based on the size of the received first SDU; A protocol layer entity indicates that the SDU segment is a data segment of the first SDU.

Specifically, the method further includes:

The first protocol layer entity submits at least two SDU fragments added with the header of the first protocol layer to the second protocol layer entity;

The second protocol layer is a lower layer of the first protocol layer.

Specifically, the first protocol layer includes:

The PDCP layer of the packet data aggregation protocol;

Or, the service data adapts to the SDAP layer of the agreement;

Or, a third protocol layer located above the PDCP layer and below the SDAP layer;

Or, the fourth protocol layer located above the SDAP layer.

In a second aspect, an embodiment of the present invention provides a data packet processing method, including: a first protocol layer entity receives at least two SDU fragments, where the at least two SDU fragments are data fragments obtained based on the size of the first SDU.

Specifically, the size of each SDU segment in the at least two SDU segments is equal, and the size of each SDU segment is less than or equal to the first threshold;

Alternatively, the size of the first SDU fragment in the at least two SDU fragments is less than the first threshold, and the size of the SDU fragments other than the first SDU fragment in the at least two SDU fragments is equal to the The first threshold.

Specifically, the method further includes:

The first protocol layer entity determines that the second SDU segment of the at least two SDU segments is the first protocol layer header corresponding to each SDU segment of the at least two SDU segments. When the first data fragment of the SDU is used, the first protocol layer entity performs header decompression processing on the second SDU fragment.

Specifically, after performing header decompression processing on the second SDU segment, the method further includes:

Merging processing is performed on the at least two SDU segments to obtain the first SDU.

Specifically, the header of the first protocol layer corresponding to each of the at least two SDU segments includes: first indication information, the first indication information being used to indicate at least one of the following:

The position of the SDU segment in the first SDU;

The first bit of the SDU fragment corresponds to the position in the first SDU;

Serial SN number.

Specifically, the SN number corresponding to each of the at least two SDU segments is the same;

Or, the SN number corresponding to each SDU segment in the at least two SDU segments is different.

Specifically, when the SN number corresponding to each of the at least two SDU segments is different,

The header of each of the at least two SDU fragments includes: second indication information;

The second indication information is used to indicate the SDU to which the SDU segment belongs.

Specifically, the first protocol layer includes:

The PDCP layer of the packet data aggregation protocol;

Or, the service data adapts to the SDAP layer of the agreement;

Or, a third protocol layer located above the PDCP layer and below the SDAP layer;

Or, the fourth protocol layer located above the SDAP layer.

In a third aspect, an embodiment of the present invention provides a first protocol layer entity, including: a first processing unit configured to divide the first SDU into at least two SDU segments based on the size of the received first SDU, and Indicating that the SDU segment is a data segment of the first SDU.

Specifically, the first processing unit is configured to: when the size of the first SDU is greater than a first threshold, the first agreement layer entity divides the first SDU into at least two SDU segments;

The size of each SDU segment in the at least two SDU segments is equal, and the size of each SDU segment is less than or equal to the first threshold;

Alternatively, the size of a first SDU segment in the at least two SDU segments is less than the first threshold, and in the at least two SDU segments, the sizes of SDU segments other than the first SDU segment are all equal to all sizes. Mentioned first threshold.

Specifically, each of the at least two SDU fragments includes a corresponding header of the first protocol layer;

The header of the first protocol layer includes: first indication information, and the first indication information is used to indicate at least one of the following:

The position of the SDU segment in the first SDU;

The first byte of the SDU fragment corresponds to the position in the first SDU;

Serial SN number.

Specifically, the SN number corresponding to each of the at least two SDU segments is the same;

Or, the SN number corresponding to each SDU segment in the at least two SDU segments is different.

Specifically, when the SN number corresponding to each of the at least two SDU segments is different,

The header of each of the at least two SDU fragments includes: second indication information;

The second indication information is used to indicate the SDU to which the SDU segment belongs.

Specifically, the first protocol layer is the PDCP layer of the Packet Data Convergence Protocol, and when the second SDU fragment in the at least two SDU fragments is the first data fragment of the first SDU, the first processing A unit configured to perform header compression processing on the second SDU segment;

When the third SDU segment of the at least two SDU segments is not the first data segment of the first SDU, the processing unit is configured to not perform header compression processing on the third SDU segment.

Specifically, the first processing unit is configured to perform compression processing on the header of the second SDU segment.

Specifically, the first SDU is user profile data;

Alternatively, the first SDU is control plane data.

In a fourth aspect, an embodiment of the present invention provides a first protocol layer entity, including: a receiving unit configured to receive at least two SDU fragments, where the at least two SDU fragments are data fragments obtained by segmentation based on the size of the first SDU .

Specifically, the size of each SDU segment in the at least two SDU segments is equal, and the size of each SDU segment is less than or equal to the first threshold;

Alternatively, the size of the first SDU fragment in the at least two SDU fragments is less than the first threshold, and the size of the SDU fragments other than the first SDU fragment in the at least two SDU fragments is equal to the The first threshold.

Specifically, the first agreement layer entity further includes:

The second processing unit is configured to determine, based on the header of the first protocol layer corresponding to each of the at least two SDU fragments, that the second SDU fragment of the at least two SDU fragments is the first When the first data fragment of the SDU is used, the first protocol layer entity performs header decompression processing on the second SDU fragment.

Specifically, the second processing unit is configured to perform merging processing on the at least two SDU segments to obtain the first SDU.

Specifically, the header of the first protocol layer corresponding to each of the at least two SDU segments includes: first indication information, the first indication information being used to indicate at least one of the following:

The position of the SDU segment in the first SDU;

The first bit of the SDU fragment corresponds to the position in the first SDU;

Serial SN number.

Specifically, the SN number corresponding to each of the at least two SDU segments is the same;

Or, the SN number corresponding to each SDU segment in the at least two SDU segments is different.

Specifically, when the SN number corresponding to each of the at least two SDU segments is different,

The header of each of the at least two SDU fragments includes: second indication information;

The second indication information is used to indicate the SDU to which the SDU segment belongs.

Specifically, the first protocol layer includes:

The PDCP layer of the packet data aggregation protocol;

Or, the service data adapts to the SDAP layer of the agreement;

Or, a third protocol layer located above the PDCP layer and below the SDAP layer;

Or, the fourth protocol layer located above the SDAP layer.

In a fifth aspect, an embodiment of the present invention provides a first protocol layer entity, including: a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used for running the computer program , Execute the steps of the data packet processing method executed by the first protocol layer entity corresponding to the terminal device.

In a sixth aspect, an embodiment of the present invention provides a first protocol layer entity, including: a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used for running the computer program , Execute the steps of the data packet processing method executed by the first protocol layer entity corresponding to the network device.

In a seventh aspect, an embodiment of the present invention provides a storage medium that stores an executable program, and when the executable program is executed by a processor, the above-mentioned data packet processing method executed by the first protocol layer entity corresponding to the network device is implemented.

In an eighth aspect, an embodiment of the present invention provides a storage medium storing an executable program that, when executed by a processor, implements the aforementioned data packet processing method corresponding to the first protocol layer entity of the network device.

In the data packet processing method provided by the embodiment of the present invention, the first protocol layer entity corresponding to the terminal device side divides the first SDU into at least two SDU fragments based on the size of the received first SDU. The SDU is divided into at least two SDU segments, so that data transmission is not restricted by the maximum data that the protocol layer can support transmission, and effective data transmission is realized.

In order to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and explanation purposes only, and are not used to limit the embodiments of the present invention.

Before describing the embodiments of the present invention in detail, a brief description of the protocol stack for data transmission will be given. As shown in Figure 1, on the terminal device side and on the network device side, the protocol stack is the service in order from top to bottom according to the layer relationship. Data Adaptation Protocol (Service Data Adaptation Protocol, SDAP) layer, PDCP layer, radio link control (Radio Link Control, RLC) layer, media access control (MAC) layer and physical (PHY) layer , The layer relationship is: the SDAP layer is the upper layer of the PDCP layer, the PDCP layer is the upper layer of the RLC layer, the RLC layer is the upper layer of the MAC layer, and the MAC layer is the upper layer of the PHY layer. Correspondingly, a protocol layer has a corresponding relationship between the network equipment side and the terminal equipment side.

Based on the above-mentioned problems, the present invention provides a data packet processing method. The data packet processing method in the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system , LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access, WiMAX) communication system or 5G system, etc.

Illustratively, the communication system 100 applied in the embodiment of the present application is shown in FIG. 2. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or a terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a NodeB (NodeB, NB) in a WCDMA system, or a base station in an LTE system. Evolutional Node B (eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, or a storage device. Pick-up points, in-vehicle devices, wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN) Wait.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cables, and direct cable connections. And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks A device that is configured to receive/send communication signals from another terminal device; and/or Internet of Things (IoT) equipment. A terminal device set to communicate through a wireless interface can be called a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include but are not limited to satellite or mobile phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, and the Internet /Intranet access, Web browser, note book, calendar and/or PDA with Global Positioning System (GPS) receiver; and conventional laptop and/or palm-type receiver or including radio phone transceiver Other electronic devices. Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless Communication equipment, user agent or user device. Access terminals can be mobile phones, wireless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA), with wireless communication functions Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.

Optionally, direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.

Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Figure 2 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This embodiment of the application does not limit this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 2 as an example, the communication equipment may include a network equipment 110 with communication functions and a terminal equipment 120. The network equipment 110 and the terminal equipment 120 may be the specific equipment described above. To repeat; the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiment of the present application.

An optional processing flow of a data packet processing method provided by an embodiment of the present invention, as shown in FIG. 3, includes the following steps:

Step S201: The first agreement layer entity divides the first SDU into at least two SDU segments based on the received size of the first SDU.

In the embodiment of the present invention, the first SDU may be sent by the RRC layer to the first agreement layer entity, or may be sent by the application layer to the first agreement layer entity.

In some embodiments, when the size of the first SDU is greater than a first threshold, the first agreement layer entity divides the first SDU into at least two SDU segments. When the first SDU is segmented, when the size of the first SDU is an integer multiple of the first threshold, the size of each of the at least two SDU segments after the first SDU is segmented Both are equal to the first threshold. When the first SDU is segmented, when the size of the first SDU is not an integer multiple of the first threshold, the size of the last SDU segment of the at least two SDU segments is less than the first threshold, and the size is divided by The size of the SDU fragments other than the last SDU fragment is equal to the first threshold. Or, when the size of the first SDU is not an integer multiple of the first threshold, the first SDU is equally divided, and the size of each SDU segment obtained by the segmentation is the same, and the size of each SDU segment Less than the first threshold.

In the embodiment of the present invention, the first threshold is the maximum value of data that the first protocol layer can support transmission. Optionally, the first threshold is the maximum data size that the PDCP layer can support, such as 9K bytes.

In some embodiments, each of the at least two SDU segments includes a corresponding header of the first protocol layer, and the header of the first protocol layer includes: first indication information, and the first indication information is used to indicate At least one of the following:

The position of the SDU fragment in the first SDU, and the first byte of the SDU fragment corresponds to the position and serial number (SN) in the first SDU.

Here, the position of the SDU segment in the first SDU refers to the SDU segment in the front, middle, or rear of the first SDU. Taking the division of the first SDU into 4 SDU fragments as an example, the position of the SDU fragment in the first SDU is schematic diagram. As shown in FIG. The SDU segment is located in the middle of the first SDU, and the fourth SDU segment is located at the rear of the first SDU. It can be understood that the front part of the first SDU refers to the first byte of the first SDU.

The SN number corresponding to each of the at least two SDU segments divided into the first SDU segment may be the same or different. When the SN number corresponding to each SDU segment in at least two SDU segments is different, the header of each SDU segment includes: second indication information, and the second indication information is used to indicate the SDU to which the SDU segment belongs; That is, the second indication information indicates which SDU segment is obtained by segmenting the SDU segment.

In the embodiment of the present invention, the first protocol layer is the PDCP layer, or the SDAP layer, or the third protocol layer above the PDCP layer, below the SDAP layer, or the fourth protocol layer above the SDAP layer. Protocol layer. Here, the third agreement layer and the fourth agreement layer may be new agreement layers other than the existing agreement layers in related technologies.

Based on the fact that the first protocol layer is a different layer, the first protocol layer entity in the embodiment of the present invention has different functions. In the following description, the first protocol layer is the PDCP layer and the first protocol layer is a layer above the PDCP layer as examples.

When the first protocol layer is the PDCP layer, the first protocol layer entity performs header compression processing on the SDU segment corresponding to the first data segment of the first SDU. Here, the first data segment of the first SDU is located at the front of the first SDU. Taking FIG. 4 as an example, the first SDU segment is the first data segment of the first SDU. Optionally, the first protocol layer entity further buffers the at least two SDU fragments, and receives a discard timer configured by a higher layer. When the discard Timer reaches a preset time value, the buffered The at least two SDU fragments are discarded; optionally, after the at least two SDU fragments are first cached, the discard timer is not started. Here, the discard Timer is a shorter value, which may be different from the existing discard Timer in the related art.

When the first protocol layer is a layer above the PDCP layer, for example, the first protocol layer is a SDAP layer, or a third protocol layer above the PDCP layer, below the SDAP layer, or above the SDAP layer In the fourth protocol layer of the PDU, the first protocol layer entity carries third indication information in the header of the first PDU, and the third indication information is used to instruct the PDCP layer to determine whether to perform header compression on the first PDU Or decompression processing; the first PDU includes a data fragment of the first SDU; the first PDU is formed by adding the header of the first protocol layer to the first SDU. Here, the first PDU includes a data fragment of the first SDU, and the first PDU is formed by adding a header of the first protocol layer to the first SDU.

In the embodiment of the present invention, the first agreement layer entity further indicates that the SDU segment is a data segment of the first SDU. In specific implementation, it can be indicated in the header of the first protocol layer corresponding to the SDU fragment; or when the first protocol layer entity transmits the SDU fragment to the protocol layer below the first protocol layer, it can be indicated by means of signals Give instructions.

It should be noted that the first protocol layer entity involved in the embodiment of the present invention corresponds to the first protocol layer entity on the terminal device side.

The embodiment of the present invention also provides another data packet processing method. The optional processing flow of the data packet processing method, as shown in FIG. 5, includes:

Step S301: The first protocol layer entity receives at least two SDU fragments, where the at least two SDU fragments are data fragments obtained by segmentation based on the size of the first SDU.

In the embodiment of the present invention, when the size of the first SDU is greater than a first threshold, the first agreement layer entity divides the first SDU into at least two SDU segments. When the first SDU is segmented, when the size of the first SDU is an integer multiple of the first threshold, the size of each of the at least two SDU segments after the first SDU is segmented Both are equal to the first threshold. When the first SDU is segmented, when the size of the first SDU is not an integer multiple of the first threshold, the size of the last SDU segment of the at least two SDU segments is less than the first threshold, and the size is divided by The size of the SDU fragments other than the last SDU fragment is equal to the first threshold. Or, when the size of the first SDU is not an integer multiple of the first threshold, the first SDU is equally divided, and the size of each SDU segment obtained by the segmentation is the same, and the size of each SDU segment Less than the first threshold.

In the embodiment of the present invention, the first threshold is the maximum value of data that the first protocol layer can support transmission. Optionally, the first threshold is the maximum data size that the PDCP layer can support, such as 9K bytes.

In some optional embodiments, the method further includes:

Step S302: The first protocol layer entity determines that the second SDU segment of the at least two SDU segments is the first protocol layer header corresponding to each of the at least two SDU segments. When the first data segment of an SDU is used, the first protocol layer entity performs header decompression processing on the second SDU segment.

Here, the header of the first protocol layer corresponding to each SDU segment includes: first indication information, where the first indication information is used to indicate at least one of the following: the position of the SDU segment in the first SDU, The first bit of the SDU segment corresponds to the position and SN number in the first SDU.

In specific implementation, the SN number corresponding to each SDU segment may be the same or different; when the SN number corresponding to each of the at least two SDU segments is different, each of the at least two SDU segments The header of each SDU segment includes: second indication information; the second indication information is used to indicate the SDU to which the SDU segment belongs; through the second indication information, the network device can determine each SDU after an SDU is split Fragment, SDU is obtained through each SDU fragment. Correspondingly, the method further includes:

Step S303: The first agreement layer entity merges the at least two SDU segments to obtain the first SDU.

It should be noted that the first protocol layer entity involved in the embodiment of the present invention corresponds to the first protocol layer entity on the network device side.

The embodiment of the present invention also provides a first agreement layer entity. The composition structure of the first agreement layer entity 400, as shown in FIG. 6, includes:

The first processing unit 401 is configured to divide the first SDU into at least two SDU segments based on the size of the received first SDU, and indicate that the SDU segment is a data segment of the first SDU.

In some embodiments, the size of each SDU segment in the at least two SDU segments is equal to the first threshold;

Alternatively, the size of the first SDU fragment in the at least two SDU fragments is less than the first threshold, and among the at least two SDU fragments, the size of the SDU fragments other than the first SDU fragment is equal, and each The size of each SDU segment is less than or equal to the first threshold.

In some embodiments, each of the at least two SDU fragments includes a corresponding header of the first protocol layer;

The header of the first protocol layer includes: first indication information, the first indication information is used to indicate at least one of the following: the position of the SDU segment in the first SDU, the first SDU segment The byte group corresponds to the position and SN number in the first SDU.

In some embodiments, the SN number corresponding to each SDU segment in the at least two SDU segments is the same, or the SN number corresponding to each SDU segment in the at least two SDU segments is different.

When the SN number corresponding to each SDU segment in the at least two SDU segments is different, the header of each SDU segment in the at least two SDU segments includes: second indication information; and the second indication information Used to indicate the SDU to which the SDU segment belongs.

In some embodiments, the first agreement layer entity further includes:

The sending unit 402 is configured to deliver at least two SDU fragments added with a header of the first protocol layer to a second protocol layer entity; the second protocol layer is a lower layer of the first protocol layer.

In some embodiments, the first protocol layer includes: a PDCP layer, or a SDAP layer, or a third protocol layer located above the PDCP layer and below the SDAP layer, or located above the SDAP layer On the fourth protocol layer.

In some embodiments, the first protocol layer is a PDCP layer, and when the second SDU segment of the at least two SDU segments is the first data segment of the first SDU, the first processing unit 401. Configure to perform header compression processing on the second SDU segment.

When the third SDU segment of the at least two SDU segments is not the first data segment of the first SDU, the processing unit is configured to not perform header compression processing on the third SDU segment.

In some embodiments, the first processing unit 401 is configured to perform compression processing on the header of the second SDU segment.

In some embodiments, when the first protocol layer is the PDCP layer, the first processing unit 401 is further configured to start a discarding timer, and the discarding timer is used by the first agreement entity to pair the at least two Discarding is performed on one SDU fragment; or the first processing unit 401 is configured to not start the discarding timer.

In some embodiments, the first processing unit 401 is further configured to receive a discard timer configured by a higher layer.

In some embodiments, the first protocol layer entity further includes a storage unit 403 configured to cache the at least two SDU fragments.

In some embodiments, the first protocol layer is a SDAP layer, or a third protocol layer above the PDCP layer, below the SDAP layer, or a fourth protocol layer above the SDAP layer Time,

The first processing unit 401 is further configured to carry third indication information in the header of the first PDU, and the third indication information is used to instruct the PDCP layer to determine whether to perform header compression or decompression on the first PDU The first PDU includes a data fragment of the first SDU; the first PDU is formed by adding the header of the first protocol layer to the first SDU.

In some embodiments, the first SDU is user plane data or control plane data.

It should be noted that the first protocol layer entity involved in the embodiment of the present invention corresponds to the first protocol layer entity on the terminal device side.

The embodiment of the present invention also provides another first agreement layer entity. The composition structure of the first agreement layer entity 500, as shown in FIG. 7, includes:

The receiving unit 501 is configured to receive at least two SDU fragments, where the at least two SDU fragments are data fragments obtained by segmentation based on the size of the first SDU.

In some embodiments, the size of each SDU segment in the at least two SDU segments is equal, and the size of each SDU segment is less than or equal to the first threshold;

Alternatively, the size of the first SDU fragment in the at least two SDU fragments is less than the first threshold, and the size of the SDU fragments other than the first SDU fragment in the at least two SDU fragments is equal to the The first threshold.

In some embodiments, the first agreement layer entity further includes:

The second processing unit 502 is configured to determine that the second SDU segment of the at least two SDU segments is the first protocol layer header corresponding to each of the at least two SDU segments When the first data segment of an SDU is used, the first protocol layer entity performs header decompression processing on the second SDU segment.

In some embodiments, the second processing unit is configured to merge the at least two SDU segments to obtain the first SDU.

In some embodiments, the header of the first protocol layer corresponding to each of the at least two SDU fragments includes: first indication information, the first indication information being used to indicate at least one of the following :

The position of the SDU segment in the first SDU, and the first bit of the SDU segment corresponds to the position and the SN number in the first SDU.

In some embodiments, the SN number corresponding to each of the at least two SDU segments is the same or different.

When the SN number corresponding to each SDU segment in the at least two SDU segments is different, the header of each SDU segment in the at least two SDU segments includes: second indication information; To indicate the SDU to which the SDU segment belongs.

In some embodiments, the first protocol layer includes: a PDCP layer, or a SDAP layer, or a third protocol layer located above the PDCP layer and below the SDAP layer, or located above the SDAP layer On the fourth protocol layer.

It should be noted that the first protocol layer entity involved in the embodiment of the present invention corresponds to the first protocol layer entity on the network device side.

An embodiment of the invention also provides a first protocol layer entity, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to run the computer program to execute the aforementioned terminal device Perform the steps of the power distribution method.

The embodiment of the present invention also provides another first protocol layer entity, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the computer program when the computer program is running. The steps of the power distribution method performed by the network equipment.

8 is a schematic diagram of the hardware composition structure of a first protocol layer entity according to an embodiment of the present invention. The first protocol layer entity 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The components in the first protocol layer entity 700 are coupled together through the bus system 705. It can be understood that the busbar system 705 is used to implement connection and communication between these components. In addition to the data bus, the bus system 705 also includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various bus bars are marked as bus bar system 705 in FIG. 8.

It is understandable that the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory. Among them, non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electronic Erasable Programmable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory, Magnetic Surface Memory , CD, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be magnetic disk memory or tape memory. The volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache memory. By way of exemplary but not restrictive description, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), and dynamic random access memory. Access memory (DRAM, Dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random) Access Memory), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), direct memory bus random access Memory (DRRAM, Direct Rambus Random Access Memory). The memory 702 described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

The memory 702 in the embodiment of the present invention is used to store various types of data to support the operation of the first protocol layer entity 700. Examples of such data include: any computer program used to operate on the first protocol layer entity 700, such as application program 7022. The program for implementing the method of the embodiment of the present invention may be included in the application 7022.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 701 or implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method can be completed through the integrated logic circuit of the hardware in the processor 701 or instructions in the form of software. The aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 701 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, and the storage medium is located in the memory 702. The processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the first protocol layer entity 700 may be configured by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD), and complex Programmable logic device (CPLD, Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components are implemented to implement the aforementioned methods.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, I won't repeat them here.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, here is No longer.

The present invention is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, dedicated computers, embedded processors, or other programmable data processing equipment to generate a machine that can be executed by the processor of the computer or other programmable data processing equipment A device for realizing the functions specified in one flow or multiple flows in the flowchart and/or one block or multiple blocks in the block diagram is generated.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including the instruction device , The instruction device realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment The instructions executed above provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

The above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in Within the protection scope of the present invention.

100: Communication system 110: network equipment 120: terminal equipment S201, S301: steps 400: The first agreement layer entity 401: first processing unit 402: sending unit 403: storage unit 500: The first agreement layer entity 501: receiving unit 502: second processing unit 700: first agreement layer entity 701: processor 702: Memory 7022: Application 704: network interface 705: bus system

Figure 1 is a schematic diagram of the protocol stack in related technologies;

2 is a schematic diagram of the composition structure of a communication system according to an embodiment of the present invention;

3 is a schematic diagram of an optional processing flow of a data packet processing method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the position of an SDU segment in the first SDU according to an embodiment of the present invention;

5 is a schematic diagram of an optional processing flow of another data packet processing method according to an embodiment of the present invention;

6 is a schematic diagram of the composition structure of a first protocol layer entity provided by an embodiment of the present invention;

7 is a schematic diagram of the composition structure of another first protocol layer entity provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of the hardware composition structure of the first protocol layer entity provided by an embodiment of the present invention.

S201: Step

Claims (20)

A data packet processing method, the method includes: The first protocol layer entity divides the first SDU into at least two SDU segments based on the received size of the first service data unit SDU; The first agreement layer entity indicates that the SDU segment is a data segment of the first SDU. The method according to item 1 of the scope of patent application, wherein the first agreement layer entity divides the first SDU into at least two SDU fragments based on the received first SDU size, including: When the size of the first SDU is greater than a first threshold, the first agreement layer entity divides the first SDU into at least two SDU segments; The size of each SDU segment in the at least two SDU segments is the same, and the size of each SDU segment is less than or equal to the first threshold; Alternatively, the size of a first SDU segment in the at least two SDU segments is less than the first threshold, and in the at least two SDU segments, the sizes of SDU segments other than the first SDU segment are all equal to all sizes. Mentioned first threshold. The method according to item 1 or 2 of the scope of patent application, wherein each of the at least two SDU fragments includes a corresponding header of the first protocol layer; The header of the first protocol layer includes: first indication information, and the first indication information is used to indicate at least one of the following: The position of the SDU segment in the first SDU; The first byte of the SDU fragment corresponds to the position in the first SDU; Serial SN number. The method according to item 3 of the scope of patent application, wherein each of the at least two SDU segments corresponds to the same SN number; Or, the SN number corresponding to each SDU segment in the at least two SDU segments is different. The method according to item 4 of the scope of patent application, wherein, when the SN number corresponding to each of the at least two SDU segments is different, The header of each of the at least two SDU fragments includes: second indication information; The second indication information is used to indicate the SDU to which the SDU segment belongs. The method according to item 1 of the scope of patent application, wherein, when the first protocol layer is a PDCP layer of a packetized data aggregation protocol, the method further includes: When the second SDU segment of the at least two SDU segments is the first data segment of the first SDU, the first protocol layer entity performs header compression processing on the second SDU segment; When the third SDU segment of the at least two SDU segments is not the first data segment of the first SDU, the first protocol layer entity does not perform header compression processing on the third SDU segment. The method according to item 8 of the scope of patent application, wherein the first agreement layer entity performs header compression processing on the second SDU segment, including: The first agreement layer entity compresses the header of the second SDU segment. The method according to item 1 of the scope of patent application, wherein, when the first protocol layer is a PDCP layer of a packetized data aggregation protocol, the method further includes: The first agreement layer entity starts a discard timer, where the discard timer is used by the first agreement entity to discard the at least two SDU fragments; Or the first protocol layer entity does not start the discard timer. The method according to item 10 of the scope of patent application, wherein the method further includes: The first protocol layer entity receives a discard timer configured by a higher layer. The method according to claim 10, wherein, before the first agreement layer entity starts the discard timer, the method further includes: The first agreement layer entity buffers the at least two SDU fragments. The method according to claim 1, wherein the first protocol layer is a service data adaptation protocol SDAP layer, or a third protocol layer located above the PDCP layer and below the SDAP layer, or When the fourth protocol layer is located above the SDAP layer, the method further includes: The first protocol layer entity carries third indication information in the header of the first PDU, and the third indication information is used to instruct the packetized data aggregation protocol PDCP layer to determine whether to perform header compression or decompression on the first PDU Processing; The first PDU includes a data fragment of the first SDU, and the first PDU is formed by adding the header of the first protocol layer to the first SDU. The method according to item 1 of the scope of patent application, wherein the first SDU is user-facing data; Alternatively, the first SDU is control plane data. A data packet processing method, the method includes: The first protocol layer entity receives at least two service data unit SDU fragments, where the at least two SDU fragments are data fragments obtained by segmentation based on the size of the first SDU. The first agreement layer entity according to item 23 of the scope of patent application, wherein the first agreement layer entity further includes: The sending unit is configured to deliver at least two SDU fragments with the header of the first protocol layer to the second protocol layer entity; The second protocol layer is a lower layer of the first protocol layer. The first protocol layer entity according to item 23 of the scope of patent application, wherein the first protocol layer includes: The PDCP layer of the packet data aggregation protocol; Or, the service data adapts to the SDAP layer of the agreement; Or, a third protocol layer located above the PDCP layer and below the SDAP layer; Or, the fourth protocol layer located above the SDAP layer. The first protocol layer entity according to item 23 of the scope of patent application, wherein, when the first protocol layer is the PDCP layer of the packet data aggregation protocol, the first processing unit is further configured to start a discard timer, and A discard timer is used by the first agreement entity to discard the at least two SDU fragments; Or the first processing unit is configured to not start the discard timer. The first agreement layer entity according to the 32nd patent application, wherein the first processing unit is further configured to receive a discard timer configured by a higher layer. The first agreement layer entity according to item 32 of the scope of patent application, wherein the first agreement layer entity further includes: The storage unit is configured to buffer the at least two SDU segments. The first protocol layer entity according to item 23 of the scope of patent application, wherein the first protocol layer is a service data adaptation protocol SDAP layer, or a third layer located above the PDCP layer and below the SDAP layer When the protocol layer or the fourth protocol layer located above the SDAP layer, The first processing unit is further configured to carry third indication information in the header of the first PDU, and the third indication information is used to instruct the packetized data convergence protocol PDCP layer to determine whether to perform header compression on the first PDU Or decompression; the first PDU includes a data fragment of the first SDU; the first PDU is formed by adding the header of the first protocol layer to the first SDU. A first agreement layer entity, including: The receiving unit is configured to receive at least two service data unit SDU fragments, where the at least two SDU fragments are data fragments obtained by segmentation based on the size of the first SDU.

Images