UE Policy Determination Using Location and PLMN Context
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Solution Overview
Problem
There is no clear solution for how a terminal device determines a UE policy to be used and how to choose a rule by which a UE policy may be divided, leading to unclear scenarios for UE policy updates, including actively triggering or being triggered by the network side.
Innovation Solution
A method for determining a UE policy is provided, where the terminal device uses first information such as its location, registered PLMN, and usage duration to determine the policy, and the network sends the UE policy to the device based on these factors, allowing for policy updates when the device changes location or usage duration expires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal device uses a single UE policy for all scenarios, then the device complexity is reduced, but the adaptability to different scenarios deteriorates
Solution Approach 1:
The UE policy is segmented into multiple policy rules, each associated with specific scenario conditions (location, PLMN, usage duration). The terminal device divides the overall policy into condition-specific sub-policies, allowing selective application based on current scenario without managing excessive complexity.
Solution Approach 2:
The policy selection mechanism is made dynamic, where the terminal device automatically selects and switches between different policy rules based on real-time scenario changes. This dynamic adaptation allows the system to respond to varying conditions without requiring manual reconfiguration or complex static policy structures.
2Measurement precision
If the UE policy is updated frequently to maintain accuracy, then the policy accuracy is improved, but the loss of time for policy updates increases
Solution Approach 1:
The policy update mechanism operates periodically based on trigger conditions such as location changes, PLMN changes, or usage duration expiration. Instead of continuous updates, the system checks and updates policies at defined intervals or when specific events occur, reducing unnecessary update overhead while maintaining accuracy when needed.
Solution Approach 2:
The terminal device monitors scenario parameters (location, PLMN, usage duration) and provides feedback to the policy management function. When changes are detected, the device requests updated policies only when necessary, creating a feedback-driven update mechanism that balances accuracy with time efficiency by avoiding redundant updates.
3Reliability
If the terminal device actively requests policy updates, then the policy freshness is improved, but the use of energy for communication increases
Solution Approach 1:
The terminal device is pre-configured with policy rules and update conditions during initial policy establishment. This preliminary configuration allows the device to autonomously determine when updates are needed based on pre-defined triggers, reducing the need for frequent active communication requests while ensuring policy freshness when conditions warrant updates.
Solution Approach 2:
The terminal device autonomously monitors its own scenario parameters (location, PLMN, usage duration) and self-determines when policy updates are necessary. This self-service approach reduces unnecessary communication energy consumption by only initiating policy requests when actual scenario changes occur, rather than continuously querying the network.
Data Source
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AI summary
The present application provides a method and a device for determining and sending a policy, and provides a specific method for a terminal device to use a user equipment (UE) policy. Said method comprises: a terminal device determining, according to first information, a UE policy used by the terminal device, the first information including at least one piece of the following information: an area where the terminal device is located, a public land mobile network (PLMN) identity (ID) corresponding to the network in which the terminal device is registered or resides, and a usage duration of the UE policy.