UE Policy Sections Management via ePCO Capability Exchange
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Solution Overview
Problem
In wireless communications, user equipment (UE) cannot determine at the time of attachment to an Evolved Packet System (EPS) network whether the network entities support the extended protocol configuration options (ePCO) information element, which is necessary for UE policy sections management, leading to uncertainty in communication quality and performance.
Innovation Solution
The method involves transmitting a request message with an ePCO information element to a network node and receiving a response message indicating whether the EPS supports UE policy sections management, allowing the UE to perform network-requested policy management procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the UE transmits a request message with ePCO information element to determine network support for UE policy sections management, then the UE can acquire policy sections earlier during registration, but the signaling overhead and message complexity increase
Solution Approach 1:
The UE performs the ePCO capability exchange during the initial attachment procedure to EPS, before actual data transmission begins. This preliminary action allows the UE to determine network support for UE policy sections management in advance, enabling earlier acquisition of policy sections during registration rather than waiting until later in the connection establishment process
Solution Approach 2:
The network node responds to the UE's ePCO capability indication with feedback information indicating whether the network supports UE policy sections management. This feedback mechanism enables the UE to adapt its subsequent behavior based on network capabilities, allowing efficient policy section acquisition when supported while maintaining compatibility when not supported
2Adaptability or versatility
If the network node responds with ePCO information element to indicate support for UE policy sections management, then the UE can perform network-requested policy management procedures, but the signaling overhead increases
Solution Approach 1:
The ePCO information element serves multiple functions: it indicates UE capability for extended protocol configuration options, triggers capability exchange for UE policy sections management, and enables adaptive policy management procedures. By making the signaling element universal, the patent avoids introducing separate dedicated signaling messages, thereby reducing overall signaling overhead while maintaining full policy management capability
Solution Approach 2:
The patent utilizes the existing ePCO parameter within the attach request and attach accept messages to convey capability information. By changing the usage context and interpretation of this existing parameter rather than creating new message structures, the solution enables policy management adaptability while minimizing additional signaling overhead
Data Source
AI summary
Various aspects of the present disclosure relate to transmitting a request message comprising a first extended protocol configuration options (ePCO) information element (IE). Aspects of the present disclosure relate to receiving a response message comprising a second ePCO IE and determining that an evolved packet system (EPS) supports UE policy sections management based on the second ePCO IE. Aspects of the present disclosure relate to performing a network-requested UE policy management procedure based on the EPS supporting the UE policy sections management.