UE Policy Segmentation Across Access Channels for Reliable Updates
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Solution Overview
Problem
Existing UE policy update procedures in wireless communication networks face issues when policy sizes exceed predefined limits, leading to multiple requests over different access channels and potential delivery failures, without prioritized access selection.
Innovation Solution
The system splits UE policies into logical segments within specified limits, using HTTP multipart content type, and steers these segments over multiple access channels with priority indications for efficient delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the UE policy size exceeds the predefined limit, then the PCF splits the policy into multiple logical policies and sends multiple requests to the AMF, but this leads to increased complexity in access type selection and multiple failure messages
Solution Approach 1:
The patent applies segmentation by dividing the large UE policy into multiple logical policies with different priority levels (first priority and second priority). The AMF processes these segmented policies in priority order, selecting access types based on priority rather than evaluating all options equally, which reduces the complexity of access type selection while handling multiple policy segments.
2Reliability
If multiple requests are sent over multiple access channels, then the policy delivery can be attempted through different paths, but this increases the number of failure messages and processing overhead
Solution Approach 1:
The patent implements preliminary action by having the AMF determine and select the access type for each logical policy before actual transmission. The AMF uses priority information to pre-determine which access channel (3GPP or non-3GPP) will be used for each policy segment, avoiding the need to attempt multiple access channels and reducing processing time while maintaining reliable delivery.
3Ease of operation
If the AMF selects access type without priority indication, then all access channels are treated equally, but this results in inefficient resource utilization and increased delivery failures
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different logical policies. The AMF treats each policy segment differently based on its priority level, selecting access channels according to the specific requirements of each policy segment. This differentiated approach improves ease of operation while increasing delivery success rate by routing high-priority policies through more reliable channels.
Data Source
AI summary
Embodiments disclosed herein relate to a method performed by an access and mobility management function (AMF), comprises transmitting, to a policy control function (PCF), a request for updating a user equipment (UE) policy transmitted from a UE. The method comprises receiving, from the PCF, a message bundled a plurality of logical UE policies based on the UE policy. The method comprises generating a plurality of N1 requests based on the message. The method comprises transmitting, to the UE, the plurality of N1 requests to delivery of the UE policy.