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EP-4740638-A1 - METHOD AND SYSTEM FOR PERFORMING TIMEOUT HANDLING IN IDLE MODE PROCEDURE

EP4740638A1EP 4740638 A1EP4740638 A1EP 4740638A1EP-4740638-A1

Abstract

The present disclosure relates to a method and a system for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF) The method comprising receiving, by a transceiver unit [302], a first idle mode request comprising a first Serving Temporary Mobile Subscriber Identity (S-TMSI), transmitting, by the transceiver unit [302], a first registration accept message comprising a second S-TMSI; detecting, by a processing unit [304], a registration failure status; receiving, by the transceiver unit [302], a second idle mode request comprising the first S-TMSI; transmitting, by the transceiver unit [302], a second registration accept message comprising a third S-TMSI; detecting, by the processing unit [304], a registration success status; and performing, by the processing unit [304], a target action comprising deallocating the first S-TMSI at the AMF [106] and storing the third S-TMSI at the AMF [106].

Inventors

  • BISHT, BIRENDRA
  • BHATNAGAR, AAYUSH
  • BHATNAGAR, PRADEEP KUMAR
  • Singh, Harbinder Pal
  • MISHRA, SOMYA
  • SHARMA, Smridhi
  • GUPTA, AMIT KUMAR
  • Bhatt, Naresh
  • Bansal, Amrish

Assignees

  • Jio Platforms Limited

Dates

Publication Date
20260513
Application Date
20240612

Claims (12)

  1. 1. A method [400] for performing a timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF), the method comprising: - receiving, by a transceiver unit [302] at the AMF [106] from a user equipment (UE), a first idle mode request comprising a first Serving Temporary Mobile Subscriber Identity (S-TMSI); - transmitting, by the transceiver unit [302] from the AMF [106] to the UE, a first registration accept message comprising a second S-TMSI in response to the first idle mode request; - detecting, by a processing unit [304] at the AMF [106], a registration failure status associated with the first registration accept message; - receiving, by the transceiver unit [302] at the AMF [106] from the UE, a second idle mode request comprising the first S-TMSI based on the registration failure status; - transmitting, by the transceiver unit [302] from the AMF [106] to the UE, a second registration accept message comprising a third S-TMSI in response to the second idle mode request; - detecting, by the processing unit [304] at the AMF [106], a registration success status associated with the second registration accept message; and - performing, by the processing unit [304] at the AMF [ 106] , a target action based on the registration success status, wherein the target action comprises deallocating the first S- TMSI at the AMF [106] and storing the third S-TMSI at the AMF [106],
  2. 2. The method as claimed in claim 1, wherein each of the first idle mode request and the second idle mode request is one of a Mobility Request (MR), a Periodic Request (PR) and a Service Request (SR).
  3. 3. The method as claimed in claim 1, wherein the registration failure status is detected by the processing unit [304] at the AMF [106], in an event, receiving by the UE the first registration accept message is unsuccessful.
  4. 4. The method as claimed in claim 1, wherein the receiving by the processing unit [304] at the AMF [106] from the UE the second idle mode request comprising the first S-TMSI based on the registration failure status further comprises at least deallocating by the processing unit [304] the second S-TMSI at the AMF [106], and allocating the third S-TMSI by the AMF [106] based on deallocating the second S-TMSI at the AMF [106],
  5. 5. The method as claimed in claim 1, wherein detecting by the processing unit [304] at the AMF [106] the registration success status associated with the second registration accept message further comprises detecting at the AMF [106] deallocation of the first S-TMSI from the UE and storing the third S-TMSI at the UE based on transmitting the second registration accept message.
  6. 6. A system [300] for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF), the system [300] comprises: • a transceiver unit [302], wherein the transceiver unit [302] is configured to: o receive, at the AMF [106] from a user equipment (UE), a first idle mode request comprising a first Serving Temporary Mobile Subscriber Identity (S-TMSI); o transmit, from the AMF [106] to the UE, a first registration accept message comprising a second S-TMSI in response to the first idle mode request; • a processing unit [304] connected to the transceiver unit [302], wherein the processing unit [304] is configured to: o detect, at the AMF [ 106] , a registration failure status associated with the first registration accept message; wherein the transceiver unit [302] is further configured to: o receive, at the AMF [106] from the UE, a second idle mode request comprising the first S-TMSI based on the registration failure status associated with the first registration accept message; o transmit, from the AMF [106] to the UE, a second registration accept message comprising a third S-TMSI in response to the second idle mode request; wherein the processing unit [304] is further configured to: o detect, at the AMF [106], a registration success status associated with the second registration accept message; and o perform, at the AMF [106], a target action based on the registration success message, wherein the target action comprises deallocating the first S-TMSI at the AMF [106] and storing the third S-TMSI at the AMF [106],
  7. 7. The system [300] as claimed in claim 6, each of the first idle mode request and the second idle mode request is one of a Mobility Request (MR), a Periodic Request (PR) and a Service Request (SR).
  8. 8. The system [300] as claimed in claim 6, wherein the registration failure status is detected by the processing unit [304] at the AMF [106], in an event, receiving by the UE the first registration accept message is unsuccessful.
  9. 9. The system [300] as claimed in claim 6, wherein the processing unit [304] is further configured to deallocate the second S-TMSI at the AMF [106] and allocate the third S-TMSI by the AMF [106] based on deallocation of the second S-TMSI at the AMF [106],
  10. 10. The system [300] as claimed in claim 6, wherein the processing unit [304] is further configured to detect at the AMF [106] at least deallocation of the first S-TMSI from the UE and store the third S-TMSI at the UE based on transmitting the second registration accept message.
  11. 11. A user equipment for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF), the user equipment comprises: a memory; and a processor coupled to the memory, the processor is configured to - transmitting, to a system, a first idle mode request comprising a first Serving Temporary Mobile Subscriber Identity (S-TMSI), - receiving, from the system a first registration accept message comprising a second S- TMSI in response to the first idle mode request, - transmitting, to the system, a second idle mode request comprising the first S-TMSI based on a registration failure status, - receiving, from the system, a second registration accept message comprising a third S- TMSI in response to the second idle mode request, and - detecting, a target action performance based on a registration success message, wherein the target action comprises deallocating the first S-TMSI at the AMF [106] and storing the third S-TMSI at the AMF [106],
  12. 12. A non-transitory computer readable storage medium storing instructions for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF), the instructions include executable code which, when executed by one or more units of a system, causes: a transceiver unit [302] to receive from a user equipment (UE), a first idle mode request comprising a first Serving Temporary Mobile Subscriber Identity (S-TMSI), the transceiver unit [302] to transmit to the UE, a first registration accept message comprising a second S-TMSI in response to the first idle mode request, a processing unit [304] to detect, a registration failure status associated with the first registration accept message, the transceiver unit [302] to receive from the UE, a second idle mode request comprising the first S-TMSI based on the registration failure status, the transceiver unit [302] to transmit to the UE, a second registration accept message comprising a third S-TMSI in response to the second idle mode request, the processing unit [304] to detect, a registration success status associated with the second registration accept message, and the processing unit [304] to perform, a target action based on the registration success message, wherein the target action comprises deallocating the first S-TMSI at the AMF [106] and storing the third S-TMSI at the AMF [106],

Description

METHOD AND SYSTEM FOR PERFORMING TIMEOUT HANDLING IN IDLE MODE PROCEDURE TECHNICAL FIELD [0001] Embodiments of the present disclosure generally relate to network performance management systems. More particularly, embodiments of the present disclosure relate to methods and systems for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF). BACKGROUND [0002] The following description of the related art is intended to provide background information pertaining to the field of the disclosure. This section may include certain aspects of the art that may be related to various features of the present disclosure. However, it should be appreciated that this section is used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of the prior art. [0003] Wireless communication technology has rapidly evolved over the past few decades, with each generation bringing significant improvements and advancements. The first generation of wireless communication technology was based on analog technology and offered only voice services. However, with the advent of the second-generation (2G) technology, digital communication and data services became possible, and text messaging was introduced. 3G technology marked the introduction of high-speed internet access, mobile video calling, and location-based services. The fourth-generation (4G) technology revolutionized wireless communication with faster data speeds, better network coverage, and improved security. Currently, the fifth generation (5G) technology is being deployed, promising even faster data speeds, low latency, and the ability to connect multiple devices simultaneously. With each generation, wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users. [0004] Further, in the field of wireless communication technology, a registration process involves the User Equipment (UE) signalling its presence and capabilities to the network. This registration process generally involves transmission of an initial registration request from the UE to the network and transmission of acceptance or rejection to the request from the network to the UE. The registration completes when both the UE and the network exchange necessary messages to establish the UE's connection to the network. However, if the network does not receive the expected registration complete message from the UE within a predefined time frame after sending the registration acceptance message, it indicates a failure in the registration process. This type of failure may be due to various reasons such as communication errors, decoding issues, or network congestion. [0005] Furthermore, the network follows a specific procedure when the UE fails to complete the registration process. Initially, when the UE initiates an Idle mode procedure to transition to the connected state, the Access and Mobility Management Function (AMF) allocates a new S- Temporary Mobile Subscriber Identity (S-TMSI) in the registration accept message. [0006] However, if the UE does not receive the registration accept message or encounters decoding errors, it does not acquire the new S-TMSI. Consequently, the AMF retains both the old and new S-TMSI, as it awaits the Registration Complete message from the UE. [0007] When the UE retries the Idle mode procedure with the older S-TMSI, the standard requirement mandates the AMF to deliver the newer S-TMSI using a Configuration Update Command (CUC) before processing the new Idle mode procedure. However, this action of sending CUC before registration or service acceptance does not serve any practical purpose and only adds unnecessary signalling messages to the existing call flow. This inefficiency leads to the wastage of resources, burdens the network with futile transactions, and causes delays for the UE. [0008] Therefore, there is a need to provide a method and system for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF). SUMMARY [0009] This section is provided to introduce certain aspects of the present disclosure in a simplified form that are further described below in the detailed description. This summary is not intended to identify the key features or the scope of the claimed subject matter. [0010] An aspect of the present disclosure may relate to a method for performing timeout handling in an idle mode procedure at an Access and Mobility Management Function (AMF). The method comprises receiving, by a transceiver unit at the AMF from a user equipment (UE), a first idle mode request comprising a first Serving Temporary Mobile Subscriber Identity (S-TMSI). The method comprises transmitting, by the transceiver unit from the AMF to the UE, a first registration accept message comprising a second S-TMSI in response to the first idle mode request. The method comprises detecting, by a proces