Relay Entity VPLMN Session Management
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Solution Overview
Problem
Existing wireless communication systems struggle to enable seamless wireless communication sessions for relay entities operating in visited public land mobile networks (VPLMNs), particularly in scenarios where access node functions are not permitted to roam, leading to reduced coverage and increased radio link failures.
Innovation Solution
A method and apparatus for wireless communication that allow a relay entity to establish a wireless communication session with a network entity associated with a VPLMN, enabling both access node functions and UE functions to communicate via the VPLMN. This involves determining if access node functions are permitted to operate in the VPLMN, selecting the appropriate VPLMN based on priority, and establishing a wireless communication session to maintain coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access node functions are not permitted to roam in VPLMN, then network security and control are maintained, but coverage is reduced and radio link failures increase
Solution Approach 1:
The relay entity is segmented into two distinct functional components: access node functions (ANF) for providing relay services and UE functions for accessing the VPLMN. This segmentation allows the ANF to operate in the VPLMN while the UE functions handle the roaming procedures, resolving the contradiction between maintaining network control and enabling roaming capability.
Solution Approach 2:
The UE functions act as an intermediary between the access node functions and the VPLMN network. The UE functions establish the wireless communication session with the VPLMN on behalf of the access node functions, enabling the ANF to provide relay services without directly performing roaming operations, thus maintaining both security control and roaming capability.
2Area of stationary object
If relay entities establish wireless communication sessions in VPLMN, then coverage is maintained and radio link failures are reduced, but network complexity increases
Solution Approach 1:
The relay entity is designed with multi-functionality, where the same entity can operate both as an access node providing relay services and as a UE accessing the VPLMN. This universal design allows the relay entity to maintain coverage in VPLMN while using standardized UE procedures for session management, reducing overall system complexity.
3Ease of operation
If access node functions operate in VPLMN, then seamless wireless communication is enabled, but permission verification and session management become more complex
Solution Approach 1:
The relay entity performs self-service by autonomously determining whether access node functions are permitted to operate in the VPLMN and by autonomously selecting the appropriate VPLMN based on priority. The UE functions handle permission verification and session establishment without requiring complex external coordination, enabling seamless communication while managing permission complexity internally.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a relay entity may establish a wireless communication session with a network entity associated with a visited public land mobile network (VPLMN), wherein the relay entity is configured to perform access node functions and user equipment (UE) functions, and wherein establishing the wireless communication session includes enabling wireless communication for both the access node functions and the UE functions via the VPLMN. The relay entity may perform a relay service via the access node functions. Numerous other aspects are described.