Search

CN-122028225-A - User plane resource reconstruction method, device and chip

CN122028225ACN 122028225 ACN122028225 ACN 122028225ACN-122028225-A

Abstract

The application relates to a user plane resource reconstruction method, a device and a chip. The method comprises the steps of responding to data to be transmitted, sending a first connection request for a first data session to network side equipment, receiving a reply message returned by the network side equipment, responding to the reply message to meet a message exception condition to obtain a reconstruction failure event of the first data session, responding to the reconstruction failure event to meet a reconstruction failure condition, sending a session control request to the network side equipment, wherein the session control request is used for indicating the network side equipment to establish a second data session with user equipment and establishing user plane resources on the second data session. Thus, even if the session state of the first data session is out of step, the user equipment can still reestablish the user plane resource by establishing the second data session with the network side equipment, so that the data transmission is recovered, and the continuity of the data transmission is ensured.

Inventors

  • ZHANG NANFEI

Assignees

  • 展讯通信（上海）有限公司

Dates

Publication Date
20260512
Application Date
20260204

Claims (10)

  1. 1. A method for reconstructing user plane resources, applied to a user equipment, the method comprising: Responding to data to be transmitted, sending a first connection request for a first data session to network side equipment, and receiving a reply message returned by the network side equipment, wherein the first connection request is used for indicating the network side equipment to reconstruct user plane resources on the first data session and generating the reply message, and the user plane resources are used for transmitting the data to be transmitted; responding to the reply message meeting a message exception condition to obtain a reconstruction failure event of the first data session; And responding to the reestablishment failure event to meet the reestablishment failure condition, sending a session control request to the network side equipment, wherein the session control request is used for indicating the network side equipment to establish a second data session with the user equipment and establishing user plane resources on the second data session.
  2. 2. The method of claim 1, wherein the message exception condition comprises: And/or, the reply message indicates that the user plane resource on the first data session is successfully rebuilt, and the reconfiguration message does not carry data radio bearer configuration parameters, and the reconfiguration message is generated and issued for the network side equipment.
  3. 3. The method according to claim 1, wherein the method further comprises: Updating a preset count value in response to the reconstruction failure event; Returning the response to the data to be transmitted, sending a first connection request for a first data session to network side equipment, and receiving a reply message returned by the network side equipment; And setting the preset count value as an initial value in response to the reply message not meeting the message abnormal condition, or determining that the reconstruction failure event meets the reconstruction failure condition in response to the updated preset count value being greater than a count threshold.
  4. 4. The method according to claim 1, wherein the method further comprises: In response to the rebuild failure event, starting a timer; Returning the response to the data to be transmitted, sending a first connection request for a first data session to network side equipment, and receiving a reply message returned by the network side equipment; and in response to the reply message not meeting the message exception condition, canceling the timer, or in response to the current timing of the timer being greater than a timing threshold, determining that the reconstruction failure event meets a reconstruction failure condition.
  5. 5. The method of claim 1, wherein the session control request comprises a session establishment request, and wherein the sending the session control request to the network side device comprises: releasing the first data session and sending the session establishment request to the network side equipment, wherein the session establishment request is used for indicating the network side equipment to establish the data session with the user equipment.
  6. 6. The method of claim 5, wherein the method further comprises: and sending an air interface release message to the network side equipment, wherein the air interface release message is used for representing the user equipment to release the first data session.
  7. 7. The method of claim 1, wherein the session control request comprises a second connection request, the second connection request comprising a target information unit, the target information unit being used to indicate the first data session, the sending the session control request to the network-side device comprising: The second connection request is used for indicating the network side equipment to restore the first data session from a deactivated state to an activated state and taking the first data session in the activated state as the second data session.
  8. 8. A method for reconstructing user plane resources, which is applied to a network side device, the method comprising: Receiving a first connection request sent by user equipment; Reconstructing user plane resources on the corresponding first data session based on the first connection request; And based on the reconstruction result, generating and returning a reply message to the user equipment, so that the user equipment sends a session control request to the network side equipment based on the reply message, wherein the session control request is used for indicating the network side equipment to establish a second data session with the user equipment and establishing user plane resources on the second data session.
  9. 9. A user plane resource reconstruction apparatus, applied to a user equipment, the apparatus comprising: the request sending module is used for responding to data to be transmitted, sending a first connection request for a first data session to network side equipment and receiving a reply message returned by the network side equipment, wherein the first connection request is used for indicating the network side equipment to reconstruct user plane resources on the first data session and generating the reply message, and the user plane resources are used for transmitting the data to be transmitted; The event detection module is used for responding to the reply message to meet the message exception condition to obtain a reconstruction failure event of the first data session; And the session establishment module is used for responding to the reestablishment failure event to meet the reestablishment failure condition, sending a session control request to the network side equipment, wherein the session control request is used for indicating the network side equipment to establish a second data session with the user equipment and establishing user plane resources on the second data session.
  10. 10. A chip comprising a processor and a communication interface, the processor being configured to cause the chip to perform the steps of the method of any one of claims 1 to 7.

Description

User plane resource reconstruction method, device and chip Technical Field The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a chip for reconstructing a user plane resource. Background In an NR (New Radio) system, a UE (User Equipment) may apply for a User plane resource to a network side to establish a session of a specified PDU (Protocol Data Unit ) through a service request procedure or a registration procedure, so as to implement data transmission with the network side. On the premise that the UE and the network side keep synchronous to the session state of the PDU session, the network side can inform the UE that the reconstruction of the user plane resource of the PDU session fails through NAS (Non-Access Stratum) signaling, and if the UE still has a data packet to be sent, the network side can be requested again to establish the user plane resource of the PDU session. However, in some cases, the session state of the PDU session may be out of sync between the UE and the network side, for example, the network side has set the session state to a deactivated state or a released state, and the UE still regards it as an active state, where even if the UE requests the network side to establish the user plane resource of the PDU session again, the network side cannot reestablish the PDU session successfully, which results in interruption of data transmission. Disclosure of Invention Based on this, it is necessary to provide a method, device and chip for reconstructing user plane resources to solve the above technical problems, so as to timely recover data transmission between the UE and the network side, and ensure continuity of data service. In a first aspect, the present application provides a method for reconstructing user plane resources, which is applied to user equipment, and includes: Responding to data to be transmitted, sending a first connection request for a first data session to network side equipment, and receiving a reply message returned by the network side equipment, wherein the first connection request is used for indicating the network side equipment to reconstruct user plane resources on the first data session and generating the reply message, and the user plane resources are used for transmitting the data to be transmitted; responding to the reply message meeting a message exception condition to obtain a reconstruction failure event of the first data session; And responding to the reestablishment failure event to meet the reestablishment failure condition, sending a session control request to the network side equipment, wherein the session control request is used for indicating the network side equipment to establish a second data session with the user equipment and establishing user plane resources on the second data session. In one embodiment, the message exception condition includes: And/or, the reply message indicates that the user plane resource on the first data session is successfully rebuilt, and the reconfiguration message does not carry data radio bearer configuration parameters, and the reconfiguration message is generated and issued for the network side equipment. In one embodiment, the method further comprises: Updating a preset count value in response to the reconstruction failure event; Returning the response to the data to be transmitted, sending a first connection request for a first data session to network side equipment, and receiving a reply message returned by the network side equipment; And setting the preset count value as an initial value in response to the reply message not meeting the message abnormal condition, or determining that the reconstruction failure event meets the reconstruction failure condition in response to the updated preset count value being greater than a count threshold. In one embodiment, the method further comprises: In response to the rebuild failure event, starting a timer; Returning the response to the data to be transmitted, sending a first connection request for a first data session to network side equipment, and receiving a reply message returned by the network side equipment; and in response to the reply message not meeting the message exception condition, canceling the timer, or in response to the current timing of the timer being greater than a timing threshold, determining that the reconstruction failure event meets a reconstruction failure condition. In one embodiment, the session control request includes a session establishment request, and the sending the session control request to the network side device includes: releasing the first data session and sending the session establishment request to the network side equipment, wherein the session establishment request is used for indicating the network side equipment to establish the data session with the user equipment. In one embodiment, the method further comprises: and sending an air interface release mess