CN117082005A

CN117082005A - Data packet discarding processing method, device, terminal and readable storage medium

Info

Publication number: CN117082005A
Application number: CN202210532378.0A
Authority: CN
Inventors: 张艳霞; 杨晓东
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2023-11-17
Also published as: WO2023217014A1

Abstract

The application discloses a processing method, a device, a terminal and a readable storage medium for discarding data packets, which belong to the technical field of communication, and the processing method for discarding the data packets in the embodiment of the application comprises the following steps: the terminal starts a target timer under the condition that the starting condition is met; under the condition that the target timer is overtime, the terminal executes discarding operation on the cascade data packet; the cascade data packet is formed by cascading at least two sub data packets, and the cascade data packet is associated with an encapsulation packet header.

Description

Data packet discarding processing method, device, terminal and readable storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a processing method, a device, a terminal and a readable storage medium for discarding data packets.

Background

Currently, a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer processes each data packet received from an upper layer separately, and each separately processed data packet requires a separately associated PDCP encapsulation header, resulting in a large processing load and header overhead for a terminal. The terminal may need to perform a discard operation on the received packet, but how to process the discard of the PDCP packet is still unclear, resulting in confusion of the discard process of the PDCP packet by the terminal.

Disclosure of Invention

The embodiment of the application provides a processing method, a device, a terminal and a readable storage medium for discarding data packets, which can solve the problem that the discarding process of the terminal for processing PDCP data packets is still not clear in the related technology.

In a first aspect, a method for processing packet discarding is provided, including:

the terminal starts a target timer under the condition that the starting condition is met;

under the condition that the target timer is overtime, the terminal executes discarding operation on the cascade data packet;

the cascade data packet is formed by cascading at least two sub data packets, and the cascade data packet is associated with an encapsulation packet header.

In a second aspect, a processing apparatus for discarding a data packet is provided, including:

the starting module is used for starting the target timer under the condition that the starting condition is met;

the discarding module is used for executing discarding operation on the cascade data packet under the condition that the target timer is overtime;

In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of handling packet dropping according to the first aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to start a target timer when a start condition is met, and perform a discard operation on a concatenated data packet when the target timer times out;

In a fifth aspect, a communication system is provided, comprising: the terminal and the network side device, the terminal can be used for executing the steps of the processing method for discarding the data packet according to the first aspect.

In a sixth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method of handling packet dropping according to the first aspect.

In a seventh aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method for processing packet discarding according to the first aspect.

In an eighth aspect, a computer program/program product is provided, the computer program/program product being stored in a storage medium, the computer program/program product being executed by at least one processor to implement a method of handling packet dropping according to the first aspect.

In the embodiment of the application, the terminal starts the target timer under the condition that the starting condition is met, and the terminal executes the discarding operation on the cascade data packet under the condition that the target timer is overtime. Therefore, the terminal can determine when to discard the cascade data packet through the timing of the target timer, so that the management of the cascade data packet can be better realized, and the extra resource expense caused by the continuous transmission of unnecessary data packets is avoided.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic diagram of an NR User Plane (UP) protocol architecture suitable for use in embodiments of the present application;

fig. 3 is a flowchart of a processing method for discarding a data packet according to an embodiment of the present application;

fig. 4 is a block diagram of a processing device for discarding a data packet according to an embodiment of the present application;

fig. 5 is a block diagram of a communication device according to an embodiment of the present application;

fig. 6 is a block diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, 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 terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system。

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in the NR system is described as an example, and the specific type of the base station is not limited.

In order to better understand the technical solutions provided by the embodiments of the present application, the following explains related concepts possibly related to the embodiments of the present application.

Packet data convergence protocol (Packet Data Convergence Protocol, PDCP) functional profile

Referring to fig. 2, fig. 2 is a schematic diagram of an NR User Plane (UP) protocol architecture, where the NR UP protocol architecture is composed of a service data adaptation protocol (Service Data Adaptation Protocol, SDAP), PDCP, radio link control (Radio Link Control, RLC), medium access control (Medium Access Control, MAC), and Physical layer (PHY) according to an embodiment of the present application. The PDCP packets received from the upper SDAP are PDCP service data units (Service Data Unit, SDU), and the PDCP protocol data units (Protocol Data Unit, PDU) are PDCP packets processed by and associated with the PDCP layer encapsulation header. The PDCP layer needs to process (e.g., security process, associate PDCP header (header), etc.) each received PDCP SDU to generate PDCP PDUs. NR also introduces a preprocessing function, so PDCP PDUs processed and generated for PDCP can be directly delivered to RLC.

The following describes in detail, with reference to the accompanying drawings, a processing method for discarding a data packet provided by an embodiment of the present application through some embodiments and application scenarios thereof.

Referring to fig. 3, fig. 3 is a flowchart of a processing method for discarding a data packet according to an embodiment of the present application, as shown in fig. 3, the method includes the following steps:

step 301, starting a target timer by the terminal under the condition that a starting condition is met;

step 302, the terminal performs a discard operation on the concatenated data packet when the target timer expires.

It should be noted that, the terminal may perform a concatenation operation on a packet of the target service, for example, the PDCP layer of the terminal may concatenate three PDCP SDU packets received from an upper layer into one PDCP SDU concatenation packet, where the concatenation packet is associated with only one encapsulation header, so that the processing load and header overhead of the terminal may be effectively reduced.

In addition, in the embodiment of the present application, the sub-packet refers to a packet received by the terminal PDCP from an upper layer (e.g., an SDAP layer). Since the UE concatenates a plurality of packets received from an upper layer to form one concatenated packet, the plurality of packets are referred to as sub-packets of the concatenated packet in order to facilitate understanding of the relationship between the plurality of packets (e.g., the three PDCP SDU packets) and the concatenated packet.

In the embodiment of the application, the terminal counts time by starting the target timer, and when the target timer is overtime, the terminal executes the discarding operation on the cascade data packet. The target timer may be a timer associated with the concatenated data packet, that is, the timer is counted by a specific timer to perform the discarding operation of the concatenated data packet.

Alternatively, a target timer may be associated with all the concatenated data packets of the terminal, or each concatenated data packet may be associated with a target timer, or each sub-data packet forming the concatenated data packet may be associated with a target timer. For example, if the concatenated data packet is associated with a target timer, when the target timer expires, the terminal may perform a discard operation on the concatenated data packet associated with the target timer; if the sub-packets of the concatenated data packet are each associated with a target timer, when the target timer expires, the terminal may perform a discard operation on the sub-packet associated with the target timer. It should be noted that, the discarding operation of the terminal on the concatenated data packet may be other possible cases, and the subsequent embodiments will be described herein without further details.

In addition, it should be noted that the target timer may be set based on the delay requirement of the service data packet. The timer value of the target timer may be configured by the network side and provided to the UE, for example. The network side may set the timer value of the target timer based on the latency requirement (e.g., 5 ms) of the traffic data transmission over the air.

Optionally, in an implementation manner of the embodiment of the present application, the concatenated data packet is associated with a target timer. For example, the target timer may also be called a concatenation timer, all concatenation data packets of the terminal may be associated with the concatenation timer, or one concatenation data packet is associated with one concatenation timer, and by means of timing of the concatenation timer, it is determined when to perform a discard operation on the associated concatenation data packet, so as to better implement management on the concatenation data packet.

Optionally, in this embodiment, the starting condition includes any one of the following:

the cascade data packet is submitted to the RLC layer;

a first sub-packet associated with the concatenated packet arrives at the PDCP layer of the terminal;

an Mth sub-packet associated with the concatenated packet arrives at the PDCP layer of the terminal; wherein, the M can be a protocol contract or configured by a network side.

The last subpacket associated with the concatenated packet arrives at the PDCP layer of the terminal.

For example, when a concatenated data packet is submitted to the RLC layer (or bottom layer as well), the terminal starts a target timer associated with the concatenated data packet. Illustratively, PDCP concatenates three data packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated data packet), and when a PDCP PDU corresponding to the concatenated PDCP SDU is delivered to a lower layer (e.g., RLC layer), a target timer associated with the concatenated PDCP SDU is started.

Or when the first sub-data packet associated with the cascade data packet reaches the PDCP layer of the terminal, the terminal starts a target timer associated with the cascade data packet. Illustratively, PDCP concatenates three data packets received from an upper layer into one PDCP SDU (concatenated data packet), and when the first PDCP SDU (e.g., PDCP SDU # 1) corresponding to the concatenated PDCP SDU reaches the PDCP layer, the terminal starts a target timer associated with the concatenated PDCP SDU. As another example, assuming that the network side configures the number of packets that PDCP can concatenate to be 3, PDCP starts a target timer associated with the concatenated packet when receiving 3n-2 (n is a positive integer) packets from an upper layer. It should be noted that, the target timer may be a newly defined timer (such as a cascading timer), or may be an existing discard timer (discard timer); if the PDCP layer is configured to discard the timer, the PDCP layer starts the discard timer when receiving the first sub-packet (e.g., PDCP SDU # 1) of the concatenated packet from the upper layer, and does not start the discard timer when the PDCP layer receives the other sub-packets (e.g., PDCP SDU #2, PDCP SDU # 3) of the concatenated packet from the upper layer.

Alternatively, when the mth (e.g., network side configuration m=2) sub-packet associated with the concatenated packet reaches the PDCP layer of the terminal, the terminal starts a target timer associated with the concatenated packet. Illustratively, PDCP concatenates three data packets received from an upper layer into one PDCP SDU (concatenated data packet), and when a second PDCP SDU (e.g., PDCP SDU # 2) corresponding to the concatenated PDCP SDU arrives at the PDCP layer, the terminal starts a target timer associated with the concatenated PDCP SDU. As another example, assuming that the network side configures the number of packets that PDCP can concatenate to be 3, PDCP starts a target timer associated with the concatenated packet when receiving 3n-1 (n is a positive integer) packets from an upper layer. It should be noted that, the target timer may be a newly defined timer (such as a cascading timer), or may be an existing discard timer (discard timer); if the PDCP layer is configured to discard the timer, the PDCP layer starts the discard timer when receiving a second sub-packet (e.g., PDCP SDU # 2) of the concatenated packet from the upper layer, and does not start the discard timer when the PDCP layer receives other sub-packets (e.g., PDCP SDU #1, PDCP SDU # 3) of the concatenated packet from the upper layer.

Alternatively, the terminal may start a target timer associated with the concatenated data packet when the last subpacket associated with the concatenated data packet reaches the PDCP layer. Illustratively, PDCP concatenates three data packets received from an upper layer into one PDCP SDU (concatenated data packet), and when the last PDCP SDU (e.g., PDCP SDU # 3) corresponding to the concatenated PDCP SDU reaches the PDCP layer, the terminal starts a target timer associated with the concatenated PDCP SDU. As another example, assuming that the network side configures the number of packets that PDCP can concatenate to be 3, PDCP starts a target timer associated with the concatenated packets when receiving 3n (n is a positive integer) packets from an upper layer. It should be noted that, the target timer may be a newly defined timer (such as a cascading timer), or may be an existing discard timer (discard timer); if the PDCP layer is configured to discard the timer, the PDCP layer starts the discard timer when the last sub-packet (e.g., PDCP SDU # 3) of the concatenated packet is received from the upper layer, and does not start the discard timer when the PDCP layer receives other sub-packets (e.g., PDCP SDU #1, PDCP SDU # 2) of the concatenated packet from the upper layer.

Optionally, the terminal performs a discard operation on the concatenated data packet, including at least one of:

the terminal discards the cascading SDU corresponding to the cascading data packet;

the terminal discards the cascade PDU corresponding to the cascade data packet;

the terminal discards all sub-packets associated with the concatenated packet.

In the embodiment of the application, under the condition that the cascade data packet is associated with one target timer, if the target timer is overtime, the terminal can discard the data packet associated with the cascade data packet. Wherein the data packets associated with the concatenated data packet include one or more of: concatenated SDUs corresponding to concatenated data packets (e.g., concatenated PDCP SDUs), concatenated PDUs corresponding to concatenated data packets (e.g., PDCP PDUs corresponding to concatenated PDCP SDUs), and all sub-packets associated with concatenated data packets (i.e., all sub-packets forming the concatenated data packets).

Illustratively, PDCP concatenates three packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated packet), and when a target timer associated with the concatenated packet expires, the PDCP layer discards at least one of the concatenated PDCP SDU, PDCP PDUs corresponding to the concatenated PDCP SDU, and sub-packets constituting the concatenated PDCP SDU (i.e., PDCP SDU #1, PDCP SDU #2, PDCP SDU # 3).

Optionally, the terminal performs a discard operation on the concatenated data packet, and may further include:

in the case where the concatenated data packet has been delivered to the bottom layer (RLC layer), the PDCP layer of the terminal provides discard indication information to the RLC layer associated with the PDCP layer; the discard indication information is used for assisting the RLC layer to discard the received concatenated data packet.

Illustratively, PDCP concatenates three data packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated data packet), when a target timer associated with the concatenated data packet expires, if a PDCP PDU corresponding to the concatenated PDCP SDU has been delivered to the RLC layer, the PDCP layer provides discard indication information to the RLC layer to instruct the RLC layer to discard the received PDCP PDU.

In the embodiment of the application, the time is counted by associating the cascade data packet with a target timer, so that the terminal can clearly determine when to execute the discarding operation on the cascade data packet, and clearly determine how the terminal executes the discarding operation on the cascade data packet, thereby effectively improving the management of the terminal on the cascade data packet, avoiding the resource expenditure caused by the continuous transmission of unnecessary data packets and further saving the terminal expenditure.

Optionally, in another implementation manner of the embodiment of the present application, the concatenated data packet is associated with at least two target timers, where one target timer corresponds to one sub-data packet. That is, each of the word packets forming the concatenated packet is associated with a respective destination timer.

Optionally, in this embodiment, the terminal starts a target timer if a start condition is satisfied, including:

in case that a sub-packet associated with the concatenated packet arrives at the PDCP layer of the terminal, the terminal starts a target timer corresponding to the sub-packet.

For example, assuming that the network side configures the number of data packets that PDCP can concatenate to be 3, when PDCP receives a first sub-packet (e.g., PDCP SDU # 1) from an upper layer, the terminal starts a target timer associated with the PDCP SDU # 1; when the PDCP receives a second sub-data packet (such as PDCP SDU#2) from an upper layer, the terminal starts a target timer associated with the PDCP SDU#2; when the PDCP receives the last subpacket (e.g., PDCP SDU # 3) from the upper layer, the terminal starts a target timer associated with the PDCP SDU # 3. In this way, the terminal is also able to start the respective associated destination timer for each sub-packet based on the arrival time of the sub-packet forming the concatenated packet, to

Optionally, in this embodiment, in a case that the target timer expires, the terminal performs a discard operation on the concatenated data packet, including any one of the following:

under the condition that all the at least two target timers are overtime, the terminal executes discarding operation on the cascade data packet;

and discarding the first sub-data packet by the terminal under the condition that a first target timer corresponding to the first sub-data packet is overtime.

For example, in one embodiment, in the event that all of the target timers corresponding to the sub-packets associated with a concatenated packet have timed out, the terminal performs a discard operation on the concatenated packet. Wherein the dropped concatenated data packet comprises one or more of: SDUs corresponding to concatenated data packets (e.g., concatenated PDCP SDUs), PDUs corresponding to concatenated data packets (e.g., PDCP PDUs corresponding to PDCP SDUs). For example, PDCP concatenates three packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated packet), and when all the target timings corresponding to the sub-packets associated with the concatenated packet are timed out, that is, when all of the target timers #1, #2, and #3 corresponding to PDCP SDU #1, and PDCP SDU #2 and PDCP SDU #3 are timed out, the terminal discards the PDCP SDU and PDCP PDU corresponding to the PDCP SDU.

Or in another embodiment, if the first target timer corresponding to the first sub-packet associated with the concatenated packet expires, the terminal discards the first sub-packet. Illustratively, PDCP concatenates three packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated packet), and if the target timer #1 corresponding to PDCP SDU #1 expires, the terminal discards the PDCP SDU #1 packet. Additionally, if PDCP PDUs corresponding to the concatenated PDCP SDU have been generated, PDCP may also discard the PDCP PDUs that have been generated.

Optionally, the method further comprises:

and the terminal reorganizes the cascade data packet under the condition that the cascade data packet associated with the first sub-data packet is not submitted to the lower layer.

Wherein the lower layer may be an RLC layer. For example, if the concatenated data packet is not yet submitted to the RLC layer, the terminal may reassemble the concatenated data packet, for example, update header information of the concatenated data packet to implement reassembly.

Optionally, the terminal reassembles the concatenated data packet, including at least one of:

the terminal deletes the data corresponding to the first sub-data packet in the cascade data packet;

The terminal updates the packet header information of the cascade data packet after deleting the corresponding data of the first sub data packet;

and the terminal executes the safe updating operation on the cascade data packet after deleting the corresponding data of the first sub data packet.

For example, in one embodiment, if the first target timer corresponding to the first sub-packet is overtime, if the concatenated packet associated with the first sub-packet is not submitted to the RLC layer, the terminal may delete the data corresponding to the first sub-packet in the concatenated packet, so as to implement the reassembly of the concatenated packet. Illustratively, PDCP concatenates three data packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated data packet), and when a target timer corresponding to a sub-data packet (e.g., PDCP SDU # 1) associated with the concatenated PDCP SDU expires, PDCP deletes data corresponding to PDCP SDU #1 in the concatenated PDCP SDU.

Or in another embodiment, if the first target timer corresponding to the first sub-packet is overtime, if the concatenated data packet associated with the first sub-packet is not submitted to the RLC layer, the terminal deletes the data corresponding to the first sub-packet in the concatenated data packet, and updates the header information of the concatenated data packet from which the data corresponding to the first sub-packet is deleted, thereby realizing the reassembly of the concatenated data packet.

Or in another embodiment, if the first target timer corresponding to the first sub-packet is overtime, if the concatenated packet associated with the first sub-packet is not submitted to the RLC layer, the terminal deletes the data corresponding to the first sub-packet in the concatenated packet, and performs a security update operation on the concatenated packet from which the data corresponding to the first sub-packet is deleted, so as to implement the reassembly of the concatenated packet. Illustratively, PDCP concatenates three data packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated data packet), when a target timer corresponding to a sub-data packet (e.g., PDCP SDU # 1) associated with the concatenated PDCP SDU expires, PDCP deletes data corresponding to PDCP SDU #1 from the concatenated PDCP SDU, and re-performs security processing operations, such as integrity protection operations, such as recalculating integrity protection parameters (Message Authentication Code for Integrity, MAC-I), on the concatenated PDCP SDU from which the data corresponding to PDCP SDU #1 was deleted.

Optionally, the updating, by the terminal, header information of the concatenated data packet after deleting the data corresponding to the first sub data packet includes:

The terminal updates a first information field of the cascade data packet after deleting the data corresponding to the first sub data packet, where the first information field is used to indicate the size of the cascade data packet after deleting the data corresponding to the first sub data packet.

For example, if the first target timer corresponding to the first sub-packet is overtime, if the concatenated packet associated with the first sub-packet is not submitted to the RLC layer, the terminal deletes the data corresponding to the first sub-packet in the concatenated packet and updates the first information field of the concatenated packet, where the first information field may be carried in header information of the concatenated packet, so as to update header information of the concatenated packet. It can be understood that, after deleting the data corresponding to the first sub-packet, the packet size of the concatenated packet is changed, and the first information field is used to indicate the size of the concatenated packet after deleting the data corresponding to the first sub-packet, so that the bottom layer can accurately obtain the packet size of the received concatenated packet based on the first information field, thereby facilitating the processing of the concatenated packet by the bottom layer.

In the embodiment of the present application, when the concatenated data packet is associated with at least two target timers, and one of the target timers corresponds to one of the sub-data packets, the terminal performs a discard operation on the concatenated data packet, where the discard operation includes at least one of the following:

the terminal discards the cascade PDU corresponding to the cascade data packet;

the terminal discards all sub-packets associated with the concatenated packet.

For example, in the case that the respective target timers of the sub-packets associated with the concatenated data packet are both timed out, the terminal may discard the concatenated SDU (e.g., concatenated PDCP SDU) corresponding to the concatenated data packet and/or discard the concatenated PDU (e.g., concatenated PDCP PDU corresponding to the concatenated PDCP SDU) corresponding to the concatenated data packet; alternatively, the terminal may discard all sub-packets associated with the concatenated packet.

Specifically, if the respective target timers of the sub-packets associated with the concatenated data packet are overtime, if the concatenated data packet has already been submitted to the RLC layer, the PDCP layer may provide discard indication information for the RLC layer to assist the RLC layer to discard the received concatenated data packet. Illustratively, PDCP concatenates three data packets of PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 received from an upper layer into one PDCP SDU (concatenated data packet), and when all target timers corresponding to all sub-data packets respectively time out, i.e., the target timers corresponding to PDCP SDU #1, PDCP SDU #2, PDCP SDU #3 respectively time out, PDCP provides discard indication information for the RLC layer, which is used for assisting the RLC layer to discard the entire concatenated data packet, i.e., discard the concatenated PDCP SDU.

In the embodiment of the application, under the condition that the cascade data packet is submitted to the RLC layer, the terminal can send the discarding indication information to the RLC layer through the PDCP layer so as to assist the RLC layer to discard the received cascade data packet, and further, the discarding operation can be carried out on the cascade data packet submitted to the RLC layer, so that the management of the cascade data packet is better realized, and the resource cost caused by the continuous sending of unnecessary data packets is avoided, thereby saving the terminal cost and the resource.

According to the processing method for discarding the data packet, provided by the embodiment of the application, the execution main body can be a processing device for discarding the data packet. In the embodiment of the present application, a processing method for performing packet discard by a processing device for packet discard is taken as an example, and the processing device for packet discard provided by the embodiment of the present application is described.

Referring to fig. 4, fig. 4 is a block diagram of a processing device for discarding a data packet according to an embodiment of the present application. As shown in fig. 4, the processing apparatus 400 for packet discard includes:

a starting module 401, configured to start the target timer if a starting condition is satisfied;

a discarding module 402, configured to perform a discarding operation on the concatenated data packet if the target timer expires;

Optionally, the concatenated data packet is associated with a target timer.

Optionally, the starting condition includes any one of the following:

the cascade data packet is submitted to a Radio Link Control (RLC) layer;

a first sub-packet associated with the concatenated packet arrives at a packet data convergence protocol PDCP layer;

an Mth sub-data packet associated with the concatenated data packet arrives at the PDCP layer, wherein the M can be protocol convention or network side configuration;

the last subpacket associated with the concatenated packet arrives at the PDCP layer.

Optionally, the discarding module 402 is further configured to perform at least one of:

discarding the cascading service data unit SDU corresponding to the cascading data packet;

discarding a cascade protocol data unit PDU corresponding to the cascade data packet;

all sub-packets associated with the concatenated packet are discarded.

Optionally, the discarding module 402 is further configured to:

providing discard indication information to an RLC layer associated with the PDCP layer based on the PDCP layer in case the concatenated data packet has been delivered to the bottom layer;

The discard indication information is used for assisting the RLC layer to discard the received concatenated data packet.

Optionally, the concatenated data packet is associated with at least two target timers;

wherein one target timer corresponds to one sub-packet.

Optionally, the starting module 401 is further configured to:

in case that a sub-packet associated with the concatenated packet arrives at the PDCP layer of the apparatus, a target timer corresponding to the sub-packet is started.

Optionally, the discarding module 402 is further configured to perform any one of the following:

executing discarding operation on the cascade data packet under the condition that all of the at least two target timers are overtime;

and discarding the first sub-data packet when a first target timer corresponding to the first sub-data packet is overtime.

Optionally, in the case that the first target timer corresponding to the first sub-packet expires, the apparatus further includes:

and the reorganization module is used for reorganizing the cascade data packet under the condition that the cascade data packet associated with the first sub data packet is not submitted to the bottom layer.

Optionally, the reorganization module is further configured to perform at least one of:

Deleting data corresponding to the first sub-data packet in the cascade data packet;

updating the header information of the cascade data packet after deleting the corresponding data of the first sub data packet;

and executing the safe updating operation on the cascade data packet after deleting the corresponding data of the first sub data packet.

Optionally, the reorganization module is further configured to:

updating a first information field of the cascade data packet after deleting the data corresponding to the first sub data packet, wherein the first information field is used for indicating the size of the cascade data packet after deleting the data corresponding to the first sub data packet.

In the embodiment of the present application, the starting module 401 starts a target timer when a starting condition is met, and the discarding module 402 performs a discarding operation on the concatenated data packet when the target timer is overtime. Therefore, the device can determine when to discard the cascade data packet through the timing of the target timer, so that the management of the cascade data packet can be better realized, and the extra resource expense caused by the continuous transmission of unnecessary data packets is avoided.

The processing device 400 for discarding a data packet in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The processing device 400 for discarding a data packet according to the embodiment of the present application can implement each process implemented by the terminal in the embodiment of the method of fig. 3, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 5, the embodiment of the present application further provides a communication device 500, including a processor 501 and a memory 502, where the memory 502 stores a program or instructions that can be executed on the processor 501, for example, when the communication device 500 is a terminal, the program or instructions implement each step of the method embodiment of fig. 2 when executed by the processor 501, and the same technical effects can be achieved, so that repetition is avoided, and further description is omitted herein.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for starting a target timer under the condition that a starting condition is met, and executing discarding operation on the cascade data packet under the condition that the target timer is overtime; the cascade data packet is formed by cascading at least two sub data packets, and the cascade data packet is associated with an encapsulation packet header. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 6 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 600 includes, but is not limited to: at least some of the components of the radio frequency unit 601, the network module 602, the audio output unit 603, the input unit 604, the sensor 605, the display unit 606, the user input unit 607, the interface unit 608, the memory 609, and the processor 610, etc.

Those skilled in the art will appreciate that the terminal 600 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 610 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 6 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 604 may include a graphics processing unit (Graphics Processing Unit, GPU) 6041 and a microphone 6042, with the graphics processor 6041 processing image data of still pictures or video obtained by an image capturing apparatus (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts of a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 601 may transmit the downlink data to the processor 610 for processing; in addition, the radio frequency unit 601 may send uplink data to the network side device. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 609 may be used to store software programs or instructions and various data. The memory 609 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 609 may include volatile memory or nonvolatile memory, or the memory 609 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 609 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

Wherein the processor 610 is configured to start the target timer if a start condition is satisfied; the method comprises the steps of,

under the condition that the target timer is overtime, performing discarding operation on the cascade data packet;

Optionally, the concatenated data packet is associated with a target timer.

Optionally, the starting condition includes any one of the following:

the cascade data packet is submitted to a Radio Link Control (RLC) layer;

a first sub-packet associated with the concatenated data packet arrives at a packet data convergence protocol PDCP layer of the terminal;

an Mth sub-data packet associated with the cascade data packet reaches a PDCP layer of the terminal, wherein the M can be protocol convention or network side configuration;

Optionally, the processor 610 is further configured to perform at least one of:

all sub-packets associated with the concatenated packet are discarded.

Optionally, the processor 610 is further configured to:

wherein one target timer corresponds to one sub-packet.

Optionally, the processor 610 is further configured to:

and starting a target timer corresponding to the sub-data packet when the sub-data packet associated with the cascade data packet reaches the PDCP layer of the terminal.

Optionally, the processor 610 is further configured to perform any one of the following:

Optionally, in the case that the first target timer corresponding to the first sub-packet expires, the processor 610 is further configured to:

and recombining the cascade data packet associated with the first sub-data packet under the condition that the cascade data packet is not submitted to the bottom layer.

Optionally, the processor 610 is further configured to perform at least one of:

Optionally, the processor 610 is further configured to:

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned processing method embodiment for discarding a data packet, and can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the processing method embodiment of data packet discarding are realized, the same technical effects can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned processing method embodiment of packet discarding, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: the terminal and the network side equipment can be used for executing the steps of the processing method for discarding the data packets.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for processing packet discard, comprising:

2. The method of claim 1, wherein the concatenated packet is associated with a destination timer.

3. The method of claim 2, wherein the initiation condition comprises any one of:

the cascade data packet is submitted to a Radio Link Control (RLC) layer;

4. The method of claim 1, wherein the terminal performs a discard operation on concatenated data packets, comprising at least one of:

The terminal discards the cascading service data unit SDU corresponding to the cascading data packet;

the terminal discards the cascade protocol data unit PDU corresponding to the cascade data packet;

the terminal discards all sub-packets associated with the concatenated packet.

5. The method of claim 1, wherein the terminal performs a discard operation on concatenated data packets, comprising:

providing, by the PDCP layer of the terminal, discard indication information to an RLC layer associated with the PDCP layer in case the concatenated data packet has been delivered to the bottom layer;

6. The method of claim 1, wherein the concatenated packet is associated with at least two target timers;

wherein one target timer corresponds to one sub-packet.

7. The method according to claim 6, wherein the terminal starts a target timer if a start condition is satisfied, comprising:

8. The method according to claim 6, wherein the terminal performs a discard operation on the concatenated data packet in case of expiration of the target timer, comprising any one of:

9. The method of claim 8, wherein in the event that a first target timer corresponding to a first subpacket expires, the method further comprises:

and under the condition that the cascade data packet associated with the first sub-data packet is not submitted to the bottom layer, the terminal reorganizes the cascade data packet.

10. The method of claim 9, wherein the terminal reassembles the concatenated data packet including at least one of:

11. The method according to claim 10, wherein the updating, by the terminal, header information of the concatenated packet after deleting the corresponding data of the first sub-packet includes:

12. A processing apparatus for packet dropping, comprising:

13. The apparatus of claim 12, wherein the concatenated packet is associated with a target timer.

14. The apparatus of claim 13, wherein the activation condition comprises any one of:

The cascade data packet is submitted to a Radio Link Control (RLC) layer;

15. The apparatus of claim 12, wherein the discard module is further configured to perform at least one of:

all sub-packets associated with the concatenated packet are discarded.

16. The apparatus of claim 12, wherein the discard module is further configured to:

17. The apparatus of claim 12, wherein the concatenated packet is associated with at least two target timers;

Wherein one target timer corresponds to one sub-packet.

18. The apparatus of claim 17, wherein the start-up module is further configured to:

19. The apparatus of claim 17, wherein the discard module is further configured to perform any one of:

20. The apparatus of claim 19, wherein in the event that a first target timer corresponding to a first subpacket expires, the apparatus further comprises:

21. The apparatus of claim 20, wherein the reorganization module is further configured to perform at least one of:

22. The apparatus of claim 21, wherein the reorganization module is further to:

23. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of handling packet dropping as claimed in any one of claims 1 to 11.

24. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the method for handling packet discarding according to any one of claims 1-11.