Search

EP-4740640-A1 - METHOD AND SYSTEM FOR HANDLING INITIAL CONTEXT SETUP FAILURE MESSAGE

EP4740640A1EP 4740640 A1EP4740640 A1EP 4740640A1EP-4740640-A1

Abstract

The present disclosure relates to a method and a system for handling initial context setup (ICS) request failure message The disclosure encompasses: receiving, by an AMF module [106] from a user equipment (UE) [102], an ICS request; sending, by the AMF module [106] to a processing unit [202] at a connected network, the ICS request with one of a registration accept NAS message and a service accept NAS message, wherein the connected network is a wireless communication network with which the UE [102] is connected; receiving, by the AMF module [106] from the processing unit [202] at the connected network, one of a connection success indication and a connection failure indication; and performing, by the AMF module [106], one of: a success procedure in an event the AMF module [106] receives the connection success indication, and a failure procedure in an event the AMF module [106] receives the connection failure indication.

Inventors

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

Assignees

  • Jio Platforms Limited

Dates

Publication Date
20260513
Application Date
20240627

Claims (13)

  1. 1. A method for handling initial context setup (ICS) failure message, the method comprising: receiving, by an access and mobility management function (AMF) module [106] from a user equipment (UE) [102], an initial context setup (ICS) request; sending, by the AMF module [106] to a processing unit [202] at a connected network, the ICS request with one of a registration accept non-access stratum (NAS) message and a service accept NAS message, wherein the connected network is a wireless communication network with which the UE [102] is connected; receiving, by the AMF module [106] from the processing unit [202] at the connected network, one of a connection success indication and a connection failure indication; and performing, by the AMF module [106], one of: a success procedure in an event the AMF module [106] receives the connection success indication, and a failure procedure in an event the AMF module [106] receives the connection failure indication.
  2. 2. The method as claimed in claim 1, wherein the success procedure comprises registering a state of the UE [102] at the AMF module [106], as a connected state.
  3. 3. The method as claimed in claim 2, wherein the failure procedure comprises performing, reiteratively, following steps, in an event the AMF module [106] receives the connection failure indication: o stopping, an initiation of a network cleanup process at the AMF module [106]; o registering, the state of the UE at the AMF module [106], as an idle state; o sending, by the AMF module [ 106] to the processing unit [202] at the connected network, the ICS request with the one of the registration accept NAS message and the service accept NAS message; and o receiving, by the AMF module [106] from the processing unit [202] at the connected network, one of the connection success indication and the connection failure indication.
  4. 4. The method as claimed in claim 1, wherein the initial context setup (ICS) request is one of a periodic request, a service request, and a mobility request.
  5. 5. The method as claimed in claim 1, wherein the connection failure indication is received with cause UE Connectivity dropped.
  6. 6. The method as claimed in claim 1, wherein the connection failure indication is received, by the AMF module [106] from the processing unit [202], in an event the UE [102] performs handover from one generation of network to another generation of network.
  7. 7. A system for handling initial context setup (ICS) failure message, the system comprising: an access and mobility management function (AMF) module [106] configured to: o receive, from a user equipment (UE) [102], an initial context setup (ICS) request; o send, to a processing unit [202] at a connected network, the ICS request with one of a registration accept non-access stratum (NAS) message and a service accept NAS message, wherein the connected network is a wireless communication network with which the UE [102] is connected; o receive, from the processing unit [202] at the connected network, one of a connection success indication and a connection failure indication; and o perform one of: a success procedure in an event the AMF module [106] receives the connection success indication, and a failure procedure in an event the AMF module [106] receives a connection failure indication.
  8. 8. The system as claimed in claim 7, wherein the success procedure comprises registering a state of the UE [102] at the AMF module [106], as a connected state.
  9. 9. The system as claimed in claim 8, wherein to perform the failure procedure, the AMF module [106] is configured to perform, reiteratively, following steps, in an event the AMF module [106] receives a connection failure indication: ■ stop, an initiation of a network cleanup process at the AMF module [106]; ■ register, the state of the UE [102] at the AMF module [106], as an idle state; ■ send, by the AMF module [106] to the processing unit [202] at the connected network, the ICS request with the one of the registration accept NAS message and the service accept NAS message; and ■ receive, by the AMF module [106] from the processing unit [202] at the connected network, one of the connection success indication and the connection failure indication.
  10. 10. The system as claimed in claim 7, wherein the initial context setup (ICS) request is one of a periodic request, a service request, and a mobility request.
  11. 11. The system as claimed in claim 7, wherein the connection failure indication is received with cause UE Connectivity dropped.
  12. 12. The system as claimed in claim 7, wherein the connection failure indication is received, by the AMF module [106] from the processing unit [202], in an event the UE [102] performs handover from one generation of network to another generation of network.
  13. 13. A non-transitory computer-readable storage medium storing instructions for managing connection between two or more peer network entities, the instructions include executable code which, when executed by one or more units of a system, causes: an access and mobility management function (AMF) module [106] to: o receive, from a user equipment (UE) [102], an initial context setup (ICS) request; o send, to a connected network, the ICS request with one of a registration accept non-access stratum (NAS) message and a service accept NAS message, wherein the connected network is a wireless communication network with which the UE [102] is connected; o receive, at the connected network, one of a connection success indication and a connection failure indication; and o perform one of: a success procedure in an event the AMF module [106] receives the connection success indication, and a failure procedure in an event the AMF module [106] receives a connection failure indication.

Description

METHOD AND SYSTEM FOR HANDLING INITIAL CONTEXT SETUP FAILURE MESSAGE FIELD OF THE DISCLOSURE [0001] The present disclosure relates generally to the field of wireless communication systems. More particularly, the present disclosure relates to methods and systems for handling initial context setup (ICS) request failure message. BACKGROUND [0002] The following description of 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 be used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of 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] Existing technologies in the mobile communication networks, especially those transitioning between different network generations such as 4G and 5G, often face significant challenges with user equipment (UE) re-registration procedures. One of the primary issues in the prior art is the inefficient handling of the initial context setup (ICS) failures, which frequently occur due to fluctuating network signal strengths and the subsequent movement of UE between networks with varying coverage qualities. When a UE attempts to connect to the network through mobility, periodic, or service requests and transitions between 4G and 5G coverage due to differential signal strengths, ICS failures can be prompted. These failures traditionally lead to the network (specifically, the Access and Mobility Management Function, or AMF) initiating a cleanup process across multiple network functions, such as the Policy Control Function (PCF), the Short Message Service Function (SMSF), and the Session Management Function (SMF). [0005] This cleanup process is not only resource-intensive but also results in the UE being considered unreachable for mobile terminated (MT) data during the purge timer's duration. Consequently, when the UE reinitiates a service request, the AMF might respond with a rejection, compelling the UE to undergo a re-registration process. This repeated re-registration is not only a significant overhead in terms of signalling but also deteriorates the user experience by potentially causing service delays and interruptions. Furthermore, this approach does not optimally utilize network resources, as it involves unnecessary reiterations of registration processes that could otherwise be avoided. [0006] The existing approach thus lacks efficiency in handling transitions between network generations, especially in scenarios of signal variation, which is a common occurrence given the nature of mobile networks and their coverage areas. The emphasis on network cleanup and reregistration under such circumstances highlights a need for a more adaptable and resource-efficient method of managing ICS failures and UE state transitions, one that can maintain service continuity and optimize signalling in the face of network variability. [0007] Therefore, considering the foregoing discussion, there exists a need to overcome the aforementioned drawbacks. Thus, there exists an imperative need in the art to provide a method and system for handling initial context setup (ICS) request failure message. OBJECTS OF THE INVENTION [0008] Some of the objects of the present disclosure, which at least one embodiment disclosed herein satisfies are listed herein below. [0009] It is an object of the present disclosure to provide a system and a method for handling initial context setup (ICS) request failure message. [0010] It is another object of the present disclosure to provide a system and a method for handling initial context setup (ICS) request failure that is able to avoid loads on the servers due to increase in the rate of initial registrations being initiated by the user devices. [0011] It is yet another object of the present disclosure to provide a solut