CN114205262A

CN114205262A - Data processing method and related device

Info

Publication number: CN114205262A
Application number: CN202111462635.XA
Authority: CN
Inventors: 周希
Original assignee: Unisoc Chongqing Technology Co Ltd
Current assignee: Unisoc Chongqing Technology Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-03-18

Abstract

The embodiment of the application provides a data processing method and a related device. The data processing method comprises the steps of judging whether N packet data convergence protocol PDCP protocol data units (protocol data units) are abnormal or not, wherein the N PDCP PDUs are continuously received data units; and when the N PDCP PDUs are abnormal, notifying the radio resource control RRC link to be abnormal, and initiating link reconstruction or link release. Wherein N is a positive integer greater than or equal to the first threshold. Therefore, the data processing method can initiate link reconstruction or link release in time when the N continuous PDCP PCUs are abnormal, and further can avoid the influence on data service interaction caused by the fact that the transmission link is in an abnormal state for a long time.

Description

Data processing method and related device

Technical Field

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

Background

In the process of transmitting data between the terminal device and the network device, a Packet Data Convergence Protocol (PDCP) Layer, a Radio Link Control (RLC) Layer, a Medium Access Control (MAC) Layer, and a Physical Layer (PHY) at the transmitting end and the receiving end respectively process the transmitted data.

When the receiving end determines that the PDCP PDU is located in the reordering window according to the PDCP sequence number of the received PDCP Protocol Data Unit (PDU), the receiving end submits the PDCP PDU to the upper layer. And the upper layer discards the PDCP PDU when the data obtained by analyzing the PDCP PDU has abnormality. If the upper layer analyzes the data packet for a long time, the data packet is discarded for a long time, so that transmission links at the receiving and transmitting ends are in an abnormal state for a long time, and data service interaction between the receiving and transmitting ends is influenced.

Disclosure of Invention

The embodiment of the application provides a data processing method and a related device, which can avoid that a transmission link is in an abnormal state for a long time.

In a first aspect, an embodiment of the present application provides a data processing method, where the method includes: judging whether N Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) are abnormal, wherein the N PDCP PDUs are continuously received data units; when the N PDCP PDUs are abnormal, notifying a Radio Resource Control (RRC) link to be abnormal, and initiating link reconstruction or link release; n is a positive integer greater than or equal to the first threshold.

Therefore, the data processing method can initiate link reconstruction or link release in time when the N continuous PDCP PCUs are abnormal, and further can avoid the influence on data service interaction caused by the fact that the transmission link is in an abnormal state for a long time.

In an optional embodiment, the determining whether N PDCP PDUs are abnormal includes: determining whether one or more fields in a header of an Internet Protocol (IP) data packet in each of the N PDCP PDUs belong to a preset range; if the PDCP PDU belongs to the preset range, determining that the PDCP PDU is not abnormal; and if the data does not belong to the preset range, determining that the PDCP PDU is abnormal. The embodiment can actively identify whether the IP data packet is abnormal or not based on one or more fields in the packet head of the IP data packet, and is favorable for avoiding that the transmission link is in an abnormal state for a long time.

In an alternative embodiment, the method further comprises: respectively judging whether each PDCP PDU is data in a PDCP reordering window according to the PDCP sequence number of each PDCP PDU in the N PDCP PDUs; and when the N PDCP PDUs are all data in the PDCP reordering window, executing a step of judging whether the N PDCP PDUs are abnormal.

In an alternative embodiment, the method further comprises: respectively judging whether each PDCP PDU in the N PDCP PDUs is a data PDU according to the code stream of the data; and when the N PDCP PDUs are all data PDUs, executing a step of judging whether the N PDCP PDUs are abnormal or not.

In an alternative embodiment, the method further comprises: determining a Radio Link Control (RLC) mode mapped by a Data Radio Bearer (DRB) corresponding to each PDCP PDU in the N PDCP PDUs; and when the RLC modes mapped by the DRB corresponding to each PDCP PDU in the N PCDP PDUs are all RLC confirmation modes, executing a step of judging whether the N PDCP PDUs are abnormal.

In a second aspect, an embodiment of the present application provides a data processing apparatus, including:

a judging unit, configured to judge whether N packet data convergence protocol PDCP protocol data units PDUs are abnormal, where the N PDCP PDUs are data units that are continuously received;

the processing unit is used for notifying the radio resource control RRC link to be abnormal and initiating link reconstruction or link release when the N PDCP PDUs are abnormal; n is a positive integer greater than or equal to the first threshold.

In addition, in this aspect, reference may be made to the related matters of the first aspect described above for other alternative embodiments of the data processing apparatus, and details are not described here.

In a third aspect, an embodiment of the present application provides a communication apparatus, which includes a processor and a memory, where the processor and the memory are connected to each other, where the memory is used to store a computer program, and the computer program includes program instructions, and the processor is configured to invoke the program instructions to execute the method according to the first aspect.

In a fourth aspect, an embodiment of the present application provides a module device, where the module device includes a communication module, a power module, a storage module, and a chip module, where: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment.

In an optional implementation, the chip module is configured to: judging whether N packet data convergence protocol PDCP Protocol Data Units (PDUs) are abnormal, wherein the N PDCP PDUs are continuously received data units; when the N PDCP PDUs are abnormal, notifying the radio resource control RRC link to be abnormal, and initiating link reconstruction or link release; n is a positive integer greater than or equal to the first threshold.

In addition, in this implementation, other optional implementations of the chip module can be referred to the relevant content of the first aspect, and are not described in detail here.

In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes: a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above-described method embodiments.

In a sixth aspect, embodiments of the present application provide a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, causes the processor to execute the method according to the first aspect.

In a seventh aspect, the present application provides a computer program product, which includes computer instructions that, when executed on a computer, cause the computer to perform the method according to the first aspect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1a is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 1b is a schematic diagram of a user plane protocol stack for transmitting data according to an embodiment of the present application;

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

FIG. 3 is a schematic diagram of an IP packet structure in an IP protocol;

FIG. 4 is a schematic diagram of an exemplary data processing scheme provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a module apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the following embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the listed items.

It should be noted that the terms "first," "second," "third," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The data processing method provided by the embodiment of the application can be applied to a Long Term Evolution (LTE) system, a fourth-Generation mobile communication technology (4th-Generation, 4G) system, and a fifth-Generation mobile communication technology (5th-Generation, 5G) system. With the continuous development of communication technology, the technical solution of the embodiment of the present application can also be used in communication systems of subsequent evolution, such as a sixth Generation mobile communication technology (6th-Generation, 6G) system, a seventh Generation mobile communication technology (7th-Generation, 7G) system, and so on.

Referring to fig. 1a, fig. 1a is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device, a terminal device. The communication system may also include a channel, such as a transmission medium such as fiber, cable, or air, for transmitting data between the network device and the terminal device. The number and form of the devices shown in fig. 1a are for example and do not constitute a limitation to the embodiments of the present application, and in practical applications, two or more network devices and two or more terminal devices may be included. The communication system shown in fig. 1a is illustrated by way of example as a network device and a terminal device. In fig. 1a, the network device takes a base station as an example, and the terminal device takes a mobile phone as an example.

In the process of transmitting data between the terminal equipment and the network equipment, the user plane protocol stacks at the receiving and transmitting ends respectively process the transmitted data. Based on the communication system shown in fig. 1a, a schematic diagram of a user plane protocol stack for transmitting data according to the embodiment of the present application is shown in fig. 1 b. The user plane protocol stack in the LTE system mainly includes: a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a physical layer (PHY). The PDCP layer may be configured to perform header compression and decompression on an Internet Protocol (IP) packet, perform encryption and decryption, perform integrity protection on data, use a discard (discard) timer to time, perform retransmission when reestablishing, and perform reordering. The RLC layer may be used to perform segmentation, reassembly, concatenation, or padding on data, and may also be used to parse Protocol Data Units (PDUs). The MAC layer may be used to provide access control functions for the physical layer such as addressing mode, access coordination, frame check sequence generation and checking, etc. The physical layer may be used to complete transport block packetization and air interface transmission and reception, among other things.

Specifically, in the process of data transmission between the network device and the terminal device, the PDCP layer, the RLC layer, the MAC layer, and the PHY of the transmitting end respectively process data, and then the PHY of the transmitting end transmits the data to the PHY of the receiving end; after the PHY of the receiving end receives the data from the transmitting end, the PHY of the receiving end, the MAC layer, the RLC layer and the PDCH layer process the data in sequence.

The data processing method provided by the embodiment of the application can be executed by a data processing device. The data processing device may be a receiving end in the communication system shown in fig. 1 a. That is, when the network device transmits data to the terminal device, the data processing apparatus is the terminal device; when the terminal equipment sends data to the network equipment, the data processing device is the network equipment.

In this embodiment, the network device may be a device with a wireless transceiving function or a chip disposed on the device, and the network device includes but is not limited to: a base station in LTE, a 5G base station gNB, an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a network equipment controller (BSC), a Base Transceiver Station (BTS), a home network equipment (e.g., a home Node B or a home Node B), a baseband unit (BBU), an Access Point (AP) in a wireless fidelity (WIFI) system, etc., and may also be a network equipment (NR network equipment for short) in an NR system, even equipment used in a 6G system, for example, an evolved Node B (NodeB or eNB or e-NodeB) in LTE, a base station in NR (gnnodeb or gNB), a transmitting/receiving point, or a transmission point (TRP or TP), etc., which is not limited in this embodiment.

In this embodiment, a terminal device may also be referred to as a terminal, and may refer to various types of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, a user equipment, or the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in transportation safety, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like, which are not limited in this embodiment of the present application.

In the process of transmitting data between the terminal device and the network device, the receiving end submits the PDCP PDUs located in the PDCP reordering window to an upper layer (also referred to as a higher layer), and the upper layer discards the PDCP PDUs when there is an abnormality in the data obtained by analyzing the PDCP PDUs.

For example, the data obtained by the upper layer parsing the PDCP PDU may have an anomaly due to mismatch between a Hyper Frame Number (HFN) used by the receiving end to decrypt the PDCP PDU and an HFN used by the transmitting end to encrypt the PDCP PDU. In this case, the receiving end may also determine that the PDCP PDU is located within the reordering window according to the PDCP sequence number of the received PDCP PDU, so that the receiving end may still submit the data decrypted from the PDCP PDU to the upper layer as normal data. The upper layer analyzes the data submitted by the receiving end, and an exception exists, so that the PDCP PDU can be discarded.

Therefore, if the upper layer analyzes the data packet for a long time, the data packet is discarded for a long time, so that the transmission links at the transmitting and receiving ends are in an abnormal state for a long time, and data service interaction between the transmitting and receiving ends is influenced.

The embodiment of the application provides a data processing method, wherein in the data processing method, whether N PDCP PDUs are abnormal or not is judged, and the N PDCP PDUs are data units which are continuously received; when the N PDCP PDUs are abnormal, notifying a Radio Resource Control (RRC) link to be abnormal, and initiating link reconstruction or link release; wherein N is a positive integer greater than or equal to the first threshold. The data processing method can initiate link reconstruction or link release in time when N continuous PDCP PCUs are abnormal, and avoids the influence on data service interaction caused by the fact that a transmission link is in an abnormal state for a long time.

Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a data processing method according to an embodiment of the present disclosure. The data processing method may be performed by a data processing apparatus. The data processing method comprises the following steps:

s101, the data processing device judges whether N PDCP PDUs are abnormal, wherein the N PDCP PDUs are data units which are continuously received.

In an optional embodiment, the determining, by the data processing apparatus, whether N PDCP PDUs are abnormal includes: determining whether one or more fields in a packet header of an IP data packet in the PDCP PDU belong to a preset range or not aiming at each PDCP PDU in the N PDCP PDUs; if the PDCP PDU belongs to the preset range, determining that the PDCP PDU is not abnormal; and if the data does not belong to the preset range, determining that the PDCP PDU is abnormal. Optionally, the preset range may be a range specified by each field in a packet header of an IP data packet in an IP protocol, or may be a range customized by the data processing apparatus for each field in the IP data packet, which is not limited herein. That is, the data processing apparatus can determine whether the PDCP PDU is abnormal according to the validity of each field in the header of the IP packet in the PDCP PDU, that is, whether each field belongs to a specified range. Therefore, the data processing device can actively identify whether the PDCP PDU is abnormal or not based on one or more fields in the packet header of the IP data packet in the PDCP PDU, so that the transmission link is favorably prevented from being in an abnormal state for a long time.

With reference to fig. 3, in the IP protocol, fields in the IP packet include: version (occupy 4 bits (bits))), header length (occupy 4 bits), type of service (term of service, TOS) (occupy 8 bits), total length (bytes) (occupy 16 bits), identifier (occupy 16 bits), flag (occupy 3 bits), slice offset (occupy 13 bits), Time To Live (TTL) (occupy 8 bits), protocol (occupy 8 bits), header checksum (occupy 16 bits), source IP address (occupy 32 bits), destination IP address (occupy 32 bits), options (options) (if any), and IP data. And fields except the IP data in the IP data packet are all contained in the packet header of the IP data packet. Then, the data processing apparatus may determine whether the PDCP PDU is abnormal based on one or more fields in a header of an IP packet as shown in fig. 3 in the PDCP PDU.

Optionally, the data processing apparatus performs exception judgment based on the version number of the IP packet in the PDCP PDU. Optionally, the data processing apparatus may perform exception judgment based on a version number in a header of an IP packet in the PDCP PDU through the PDCP entity.

For example, the preset range includes: 0100 corresponding to internet protocol version 4 (IPV 4) and 0110 corresponding to IPV 6. Then, the data processing apparatus determines whether a binary number corresponding to the version number of the IP packet in the PDCP PDU is 0100 or 0110. If the binary number corresponding to the version number of the IP data packet in the PDCP PDU is 0100 or 0110, determining that the PDCP PDU is not abnormal; and if the binary number corresponding to the version number of the IP data packet in the PDCP PDU is neither 0100 nor 0110, determining that the PDCP PDU is abnormal.

Optionally, the data processing apparatus performs an exception judgment based on a header checksum of an IP packet in the PDCP PDU. The header checksum is used to check the header of the IP packet, but not the IP data, which reduces the amount of checking work. If some fields (e.g., time-to-live, flags, slice offsets, etc.) in an IP packet may change every time the IP packet passes through a router, the router should recalculate a header checksum to prevent passing of erroneous information.

Specifically, after receiving the PDCP PDU, the data processing apparatus may divide a packet header of an IP packet in the PDCP PDU into a plurality of units according to 16 bits, wherein if the length of the packet header is not a multiple of 16 bits, the packet header is filled with 0bit until the length of the packet header is a multiple of 16 bits. Then, the data processing apparatus performs an inverse code addition operation on each unit, and checks whether the sums obtained by the inverse code addition operation are all 1 (a preset range); if yes, determining that the PDCP PDU is not abnormal; otherwise, determining that the PDCP PDU is abnormal. Or the data processing device performs the addition operation on the inversed codes to obtain the sum and the inversed codes, and then judges whether the final values are all 0 (a preset range); if yes, determining that the PDCP PDU is not abnormal; otherwise, determining that the PDCP PDU is abnormal.

Optionally, the data processing apparatus performs exception judgment based on the total length of the IP packets in the PDCP PDU. The total length in the header of the IP data packet is the sum of the header length (also referred to as header length) and the IP data length. Optionally, when the total length in the header of the IP packet in the PDCP PDU is less than or equal to a Maximum Transmission Unit (MTU) value of a data link layer, the data processing apparatus determines that the PDCP PDU is not abnormal; otherwise, determining that the PDCP PDU is abnormal.

If the total length in the packet header of the IP data packet is greater than the MTU value, the sending end fragments the IP data packet, and then sends each IP data packet obtained by fragmentation respectively. And the total length of each fragmented IP data packet is less than or equal to the MTU value. Then, when the data processing apparatus as the receiving end detects that the total length of the IP packets in the received PDCP PDU is greater than the MTU value, it indicates that the PDCP PDU is abnormal.

Optionally, the data processing apparatus performs an exception judgment based on the flag of the IP packet in the PDCP PDU. Wherein, the middle bit in the flag field of the IP data packet is marked as Don't Fragment (DF); when the DF is 1, it indicates that fragmentation of the IP packet is not allowed; when DF is 0, this indicates that fragmentation of the IP packet is allowed. The lowest bit in the flag field of the IP packet is marked as More Fragment (MF); when the MF is 1, it indicates that the IP data packet is not the last data packet of the plurality of fragmented data packets, that is, other fragmented data packets corresponding to the IP data packet are also subsequently present; when the MF is 0, it indicates that the IP packet is the last packet in the plurality of fragmented packets.

Optionally, the data processing apparatus may perform, by the higher layer entity, for each PDCP PDU of the N PDCP PDUs, determining whether one or more fields in a header of an IP data packet in the PDCP PDU belong to a preset range; if the PDCP PDU belongs to the preset range, determining that the PDCP PDU is not abnormal; and if the packet data convergence protocol data unit does not belong to the preset range, determining that the PDCP PDU is abnormal. For example, the higher layer entity may be an RRC entity. In addition, the higher layer entities for performing the anomaly determination on different PDCP PDUs in the N PDCP PDUs may be the same or different.

Optionally, for each PDCP PDU of the N PDCP PDUs, an exception may be determined by one or more higher layer entities. The data processing apparatus may determine that the PDCP PDU is abnormal when there is a higher layer entity among the one or more higher layer entities that determines that the PDCP PDU is abnormal.

As can be seen, for each PDCP PDU of the N PDCP PDUs, the PDCP entity in the data processing apparatus may determine whether the PDCP PDU is abnormal; alternatively, it may be determined by a higher layer entity of the data processing apparatus whether the PDCP PDU is abnormal. Or, the PDCP entity in the data processing apparatus may determine whether the PDCP PDU is abnormal, and send the PDCP PDU to the higher layer entity, and then the higher layer entity further determines whether the PDCP PDU is abnormal. For example, after performing an exception determination based on the version number of the IP packet in the PDCP PDU, the PDCP entity in the data processing apparatus sends the PDCP PDU to the higher layer entity, and the higher layer entity further performs an exception determination based on the header checksum in the header of the IP packet in the PDCP PDU.

In an optional implementation, the data processing method may further include: the data processing device decrypts the PDCP PDU by using the HFN; after deciphering the PDCP PDU by the HFN, aiming at the deciphered PDCP PDU, executing a step of judging whether the PDCP PDU is abnormal or not. The embodiment can actively identify whether the decrypted PDCP PDU has abnormity or not under the condition that the HFN adopted by the data processing device for decrypting the PDCP PDU is not matched with the HFN adopted by the sending terminal for encrypting the PDCP PDU, thereby being beneficial to avoiding the transmission link from being in an abnormal state for a long time.

S102, when the N PDCP PDUs are abnormal, the data processing device notifies the RRC link to be abnormal and initiates link reconstruction or link release; n is a positive integer greater than or equal to the first threshold.

In an optional implementation, the data processing method further includes: the data processing device respectively judges whether each PDCP PDU is data in a PDCP reordering window according to a PDCP Sequence Number (SN) of each PDCP PDU in the N PDCP PDUs; and the data processing device executes the step of judging whether the N PDCP PDUs are abnormal or not when the N PDCP PDUs are all data in the PDCP reordering window.

Optionally, for each PDCP PDU of the N PDCP PDUs, the determining, by the data processing apparatus, whether the PDCP PDU is data in a PDCP reordering window may include: when the value obtained by subtracting the sequence number of the PDCP PDU submitted to the upper layer last time from the sequence number of the PDCP PDU is less than or equal to the number of PDCP reordering windows, the data processing device determines that the PDCP PDU is data in the PDCP reordering windows; or, when the value obtained by subtracting the sequence number of the PDCP PDU from the sequence number of the PDCP PDU submitted to the higher layer last time by the data processing apparatus is greater than or equal to the number of PDCP reordering windows, determining that the PDCP PDU is data in the PDCP reordering window.

For example, the number of reordering windows is 4, and the sequence number of the PDCP PDU that the data processing apparatus previously submitted to the higher layer is 1. Then, the data processing apparatus may determine that the received PDCP PDU #1 with sequence number 3 is data within the PDCP reordering window; the received PDCP PDU #2 with sequence number 6 is not data within the PDCP reordering window, i.e., the PDCP PDU #2 is data outside the PDCP reordering window.

Optionally, the data processing apparatus may perform, by using the PDCH entity, a step of determining whether each PDCP PDU is data in the PDCP reordering window according to the PDCP sequence number of each PDCP PDU of the N PDCP PDUs. In this embodiment, the PDCP sequence number of each PDCP PDU of the N PDCP PDUs (which may also be referred to as the Next PDCP sequence number (Next _ PDCP _ RX _ SN) of the PDU to be received Next), and the sequence number of the PDCP PDU Last Submitted to the higher layer (which may also be referred to as the Last PDCP sequence number (Last _ committed _ PDCP _ RX _ SN)) all belong to a status variable of the PDCP entity in the data processing apparatus, and the status variable may be used for controlling the receiving or discarding of data according to the requirement of the previous appointment by the PDCP entity. In addition, the state variable of the PDCP entity in the data processing apparatus further includes a hyper frame number (also referred to as a receiver sequence number rollover counter (RX _ HFN)).

In an optional implementation, the data processing method further includes: the data processing device respectively judges whether each PDCP PDU in the N PDCP PDUs is a data PDU according to the code stream of the data; and the data processing device executes the step of judging whether the N PDCP PDUs are abnormal or not when the N PDCP PDUs are all data PDUs. Optionally, the data processing apparatus may perform, by using the PDCP entity, a step of determining, according to the code stream of the data, whether each PDCP PDU of the N PDCP PDUs is a data PDU.

In an optional implementation, the data processing method may further include: the data processing device determines an RLC mode mapped by a Data Radio Bearer (DRB) corresponding to each PDCP PDU in the N PDCP PDUs; when the RLC mode mapped by the DRB corresponding to each of the N PCDP PDUs is an RLC Acknowledged Mode (AM), the data processing apparatus performs a step of determining whether the N PDCP PDUs are abnormal. Optionally, the data processing apparatus may determine, by the PDCP entity, an RLC mode mapped to the DRB corresponding to each PDCP PDU of the N PDCP PDUs.

In summary, in the data processing method, the data processing apparatus determines whether N PDCP PDUs are abnormal, where the N PDCP PDUs are data units received continuously; and when the N PDCP PDUs are abnormal, informing the RRC link to be abnormal, and initiating link reconstruction or link release. Therefore, the data processing method can actively identify whether the PDCP PDU is abnormal or not, and initiate link reconstruction or link release in time when the N continuous PDCP PCUs are abnormal, so as to avoid that the data service interaction cannot be carried out due to the fact that the transmission link is in an abnormal state for a long time.

Based on the data processing method shown in fig. 2, an exemplary data processing scheme is further provided in the embodiment of the present application as shown in fig. 4, and the data processing scheme is executed by a PDCP entity in the data processing apparatus. Specifically, after the RLC entity in the data processing apparatus has analyzed the PDU data, the RLC entity sends the PDCP PDU obtained by the analysis to the PDCP entity. The PDCP entity determines the RLC mode mapped by the DBR corresponding to the received PDCP PDU; when the RLC mode mapped by the DBR corresponding to the PDCP PDU is an RLC Acknowledged Mode (AM), whether the PDCP PDU is the data PDU is judged according to code stream analysis of data; and when the PDCP PDU is the data PDU, judging whether the PDCP PDU is the data in the PDCP reordering window. When the PDCP PDU is data in a PDCP reordering window, the PDCP entity judges whether the PDCP PDU is abnormal; if the PDCP PDU is determined to be abnormal, adding one to the abnormal value (the initial value of the abnormal value is 0), namely counting 1 abnormal data packet; otherwise, clearing the abnormal value. When the abnormal value is smaller than N, the PDCP entity continues to wait for receiving the PDCP PDU from the RLC layer and executes the operation on the received PDCP PDU; when the abnormal value is larger than or equal to N, namely the N PDCP PDUs are monitored to be abnormal, the PDCP entity informs the RRC link to be abnormal, and the RRC initiates link reconstruction or release.

Wherein, the PDCP entity determining whether the PDCP PDU is abnormal may include: the PDCP entity analyzes the packet head of the IP data packet in the PDCP PDU to obtain the version number of the IP data packet; when the obtained version number is IPV4 or IPV6, determining that the PDCP PDU is not abnormal; otherwise, determining that the PDCP PDU is abnormal.

Or, the PDCP entity determining whether the PDCP PDU is abnormal may include: the PDCP entity sends the PDCP PDU to a higher layer entity; the higher layer entity judges whether the PDCP PDU is abnormal or not based on the field in the packet header of the IP data packet in the PDCP PDU and feeds back the judgment result to the PDCP entity; and when the received judgment result is that the PDCP PDU is abnormal, the PDCP entity determines that the PDCP PDU is abnormal.

Or, the PDCP entity determining whether the PDCP PDU is abnormal may include: the PDCP entity analyzes the packet head of the IP data packet in the PDCP PDU to obtain the version number of the IP data packet. And the PDCP entity sends the PDCP PDU to a higher layer entity, and the higher layer entity judges whether the PDCP PDU is abnormal or not based on a field in a packet header of an IP data packet in the PDCP PDU and feeds back a judgment result to the PDCP entity. And when the obtained version numbers of the PDCP entity are not IPV4 and IPV6 and the received judgment result from the higher layer entity is the PDCP PDU abnormity, determining that the PDCP PDU abnormity exists.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present application. The data processing apparatus 500 shown in fig. 5 may include a determination unit 501 and a processing unit 502. The data processing device 500 shown in fig. 5 may be used to perform some or all of the functions of the data processing device in the above-described method embodiments. Wherein:

a determining unit 501, configured to determine whether N packet data convergence protocol PDCP protocol data units PDUs are abnormal, where the N PDCP PDUs are data units that are continuously received;

a processing unit 502, configured to notify the RRC link for radio resource control to be abnormal when the N PDCP PDUs are abnormal, and initiate link reestablishment or link release; n is a positive integer greater than or equal to the first threshold.

In an optional embodiment, the determining unit 501 determines whether N PDCP PDUs are abnormal, and is specifically configured to:

determining whether one or more fields in a packet header of an Internet Protocol (IP) data packet of an Internet Protocol (IP) in each of the N PDCP PDUs belong to a preset range; if the PDCP PDU belongs to the preset range, determining that the PDCP PDU is not abnormal; and if the data does not belong to the preset range, determining that the PDCP PDU is abnormal.

In an optional embodiment, the determining unit 501 is further configured to respectively determine whether each PDCP PDU is data in a PDCP reordering window according to a PDCP sequence number of each PDCP PDU in the N PDCP PDUs;

the determining unit 501 is further configured to, when the N PDCP PDUs are all data in the PDCP reordering window, perform an operation of determining whether the N PDCP PDUs are abnormal.

In an optional implementation manner, the determining unit 501 is further configured to respectively determine, according to the code stream of the data, whether each PDCP PDU of the N PDCP PDUs is a data PDU;

the determining unit 501 is further configured to, when the N PDCP PDUs are all data PDUs, perform an operation of determining whether the N PDCP PDUs are abnormal.

In an alternative embodiment, the data processing apparatus 500 further comprises a determining unit 503;

a determining unit 503, configured to determine a radio link control RLC mode mapped by a data radio bearer DRB corresponding to each PDCP PDU of the N PDCP PDUs;

the determining unit 501 is further configured to, when the RLC mode mapped by the DRB corresponding to each PDCP PDU of the N PCDP PDUs is an RLC acknowledged mode, perform an operation of determining whether the N PDCP PDUs are abnormal.

For a more detailed description of the data processing apparatus 500 and the technical effects thereof, reference may be made to the related description of the above method embodiments, which are not repeated herein.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure. The communication device 600 may be a data processing device in the above-described method embodiments. The communication device 600 comprises a transceiver 601, a memory 602 and a processor 603. The processor 603 and memory 602 are connected by one or more communication buses.

The transceiver 601 is used for transmitting data or receiving data. The memory 602 is used to store instructions or computer programs, and the memory 602 may include read-only memory and random access memory, and provides instructions and data to the processor 603. A portion of the memory 602 may also include non-volatile random access memory.

The processor 603 may be a Central Processing Unit (CPU), and the processor 603 may also be other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor, and optionally, the processor 603 may be any conventional processor or the like.

The processor 603 may be used to execute computer programs or instructions stored by the memory 602 to cause the communication device 600 to perform:

judging whether N packet data convergence protocol PDCP Protocol Data Units (PDUs) are abnormal, wherein the N PDCP PDUs are continuously received data units; when the N PDCP PDUs are abnormal, notifying the radio resource control RRC link to be abnormal, and initiating link reconstruction or link release; n is a positive integer greater than or equal to the first threshold.

In an optional implementation manner, the communication device 600 determines whether N PDCP PDUs are abnormal, specifically: determining whether one or more fields in a packet header of an Internet Protocol (IP) data packet of an Internet Protocol (IP) in each of the N PDCP PDUs belong to a preset range; if the PDCP PDU belongs to the preset range, determining that the PDCP PDU is not abnormal; and if the data does not belong to the preset range, determining that the PDCP PDU is abnormal.

In an alternative embodiment, the processor 603 may be configured to execute computer programs or instructions stored in the memory 602 to cause the communication apparatus 600 to perform:

respectively judging whether each PDCP PDU is data in a PDCP reordering window according to the PDCP sequence number of each PDCP PDU in the N PDCP PDUs; and when the N PDCP PDUs are all data in the PDCP reordering window, executing a step of judging whether the N PDCP PDUs are abnormal.

respectively judging whether each PDCP PDU in the N PDCP PDUs is a data PDU according to the code stream of the data; and when the N PDCP PDUs are all data PDUs, executing a step of judging whether the N PDCP PDUs are abnormal or not.

determining a Radio Link Control (RLC) mode mapped by a Data Radio Bearer (DRB) corresponding to each PDCP PDU in the N PDCP PDUs; and when the RLC modes mapped by the DRB corresponding to each PDCP PDU in the N PCDP PDUs are all RLC confirmation modes, executing a step of judging whether the N PDCP PDUs are abnormal.

For a more detailed description of the communication device 600 and the technical effects thereof, reference may be made to the related description of the above method embodiments, which are not repeated herein.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a module apparatus according to an embodiment of the present disclosure. The modular apparatus 700 can perform the steps related to the computer apparatus in the foregoing method embodiments, and the modular apparatus 700 includes: a communication module 701, a power module 702, a memory module 703 and a chip module 704.

The power module 702 is used for providing power for the module device. The memory module 703 is used for storing data and instructions. The communication module 701 is used for performing module device internal communication, or for performing communication between the module device and an external device, such as sending data or receiving data.

In an alternative embodiment, the chip module 704 is configured to: judging whether N packet data convergence protocol PDCP Protocol Data Units (PDUs) are abnormal, wherein the N PDCP PDUs are continuously received data units; when the N PDCP PDUs are abnormal, notifying the radio resource control RRC link to be abnormal, and initiating link reconstruction or link release; n is a positive integer greater than or equal to the first threshold.

Other implementations of the module device 700 can be found in the related contents of the above method embodiments. And will not be described in detail herein.

For each device and product applied to or integrated in the chip module, each module included in the device and product may be implemented by using hardware such as a circuit, and different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules may be implemented by using a software program running on a processor integrated in the chip module, and the rest (if any) of the modules may be implemented by using hardware such as a circuit.

An embodiment of the present application further provides a chip, where the chip includes: a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above-described method embodiments.

Embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is executed on a processor, the method flow of the above method embodiments is implemented.

Embodiments of the present application further provide a computer program product, where when the computer program product runs on a processor, the method flow of the above method embodiments is implemented.

Each device and product described in the above embodiments includes modules/units, which may be software modules/units, or hardware modules/units, or may be partly software modules/units and partly hardware modules/units. For example, for each device or product of an application or integrated chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the modules/units may be implemented by a software program, which runs on an integrated processor inside the chip, and the rest of the modules/units may be implemented by hardware such as a circuit; for each device and product corresponding to or integrating the chip module, each module/unit included in the device and product can be implemented by adopting hardware such as a circuit, different modules/units can be positioned in the same piece (such as a chip, a circuit module and the like) or different components of the chip module, at least part of/unit can be implemented by adopting a software program, and the software program runs in the chip module, and the rest of the modules/units of the integrated processor can be implemented by adopting hardware such as a circuit; for each device or product corresponding to or integrating the terminal, the modules/units included in the device or product may all be implemented by hardware such as circuits, different modules/units may be located in the same component (e.g., chip, circuit module, etc.) or different components in the terminal, or at least some of the modules/units may be implemented by software programs, the programs run on a processor integrated in the terminal, and the remaining sub-modules/units may be implemented by hardware such as circuits.

It is noted that, for simplicity of explanation, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some acts may, in accordance with the present application, occur in other orders and/or concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and operations performed by the devices and apparatuses provided in the embodiments of the present application may refer to the related descriptions of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of data processing, the method comprising:

judging whether N packet data convergence protocol PDCP Protocol Data Units (PDUs) are abnormal, wherein the N PDCP PDUs are continuously received data units;

when the N PDCP PDUs are abnormal, notifying the radio resource control RRC link to be abnormal, and initiating link reconstruction or link release; and N is a positive integer greater than or equal to a first threshold value.

2. The method of claim 1, wherein the determining whether the N PDCP PDUs are abnormal comprises:

3. The method according to claim 1 or 2, characterized in that the method further comprises:

respectively judging whether each PDCP PDU is data in a PDCP reordering window according to the PDCP sequence number of each PDCP PDU in the N PDCP PDUs;

and when the N PDCP PDUs are all data in a PDCP reordering window, executing the step of judging whether the N PDCP PDUs are abnormal.

4. The method according to claim 1 or 2, characterized in that the method further comprises:

respectively judging whether each PDCP PDU in the N PDCP PDUs is a data PDU according to the code stream of the data;

and when the N PDCP PDUs are all data PDUs, executing the step of judging whether the N PDCP PDUs are abnormal or not.

5. The method according to claim 1 or 2, characterized in that the method further comprises:

determining a Radio Link Control (RLC) mode mapped by a Data Radio Bearer (DRB) corresponding to each PDCP PDU in the N PDCP PDUs;

and when the RLC modes mapped by the DRB corresponding to each PDCP PDU in the N PCDP PDUs are all RLC confirmation modes, executing the step of judging whether the N PDCP PDUs are abnormal.

6. A data processing apparatus, characterized in that the apparatus comprises:

a processing unit, configured to notify a radio resource control RRC link failure when the N PDCP PDUs are abnormal, and initiate link reestablishment or link release; and N is a positive integer greater than or equal to a first threshold value.

7. The apparatus according to claim 6, wherein the determining unit determines whether the N PDCP PDUs are abnormal, and is specifically configured to:

8. The apparatus according to claim 6 or 7,

the judging unit is further configured to respectively judge whether each PDCP PDU is data in a PDCP reordering window according to a PDCP sequence number of each PDCP PDU of the N PDCP PDUs;

the judging unit is further configured to execute the operation of judging whether the N PDCP PDUs are abnormal when the N PDCP PDUs are all data in the PDCP reordering window.

9. The apparatus according to claim 6 or 7,

the judging unit is further configured to respectively judge whether each PDCP PDU of the N PDCP PDUs is a data PDU according to a code stream of the data;

the judging unit is further configured to execute the operation of judging whether the N PDCP PDUs are abnormal when the N PDCP PDUs are all data PDUs.

10. The apparatus according to claim 6 or 7, characterized in that the apparatus further comprises a determining unit;

the determining unit is configured to determine a radio link control RLC mode mapped by a data radio bearer DRB corresponding to each of the N PDCP PDUs;

the judging unit is further configured to execute the operation of judging whether the N PDCP PDUs are abnormal when the RLC mode mapped by the DRB corresponding to each of the N PCDP PDUs is an RLC acknowledged mode.

11. A communication apparatus, comprising a processor and a memory, the processor and the memory being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of any of claims 1 to 5.

12. The utility model provides a module equipment, module equipment includes communication module, power module, storage module and chip module, wherein:

the power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and instructions;

the communication module is used for carrying out internal communication of module equipment or is used for carrying out communication between the module equipment and external equipment;

the chip module is used for:

13. A computer-readable storage medium, in which a computer program is stored which, when executed by a processor, causes the processor to carry out the method according to any one of claims 1 to 5.

14. A computer program product comprising computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 5.