Dynamic Bearer Setup Timing for Base Station Load Management
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Solution Overview
Problem
In cellular wireless access networks, setting up a dedicated bearer before the called party answers can waste resources if they do not answer, particularly when the base station is heavily loaded, potentially restricting resource assignment and throughput for other users.
Innovation Solution
Dynamically controlling the timing of dedicated bearer setup based on the base station's load, invoking it before the called party answers if the load is low and only after they answer if the load is high, to optimize resource allocation and avoid unnecessary resource reservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated bearer setup is invoked before the called party answers, then call setup reliability is improved, but resource waste increases when the called party does not answer
Solution Approach 1:
The patent applies dynamics by making the dedicated bearer setup timing flexible rather than fixed. The system dynamically adjusts whether to invoke bearer setup before or after the called party answers based on real-time base station load conditions. When load is high, setup occurs after answer to avoid waste; when load is low, setup occurs before answer to ensure reliability. This dynamic adaptation resolves the contradiction between reliability and resource waste.
2Reliability
If dedicated bearer setup is invoked before the called party answers, then resource reservation is ensured early, but base station throughput for other users decreases when the base station is heavily loaded
Solution Approach 1:
The patent changes the timing parameter of dedicated bearer setup based on base station load conditions. When load exceeds a threshold, the system changes the setup timing from 'before answer' to 'after answer', effectively adjusting the resource reservation strategy. This parameter change allows the system to maintain resource reservation when necessary while preserving throughput during high-load periods, resolving the contradiction between resource assurance and system productivity.
3Loss of energy
If dedicated bearer setup is delayed until after the called party answers, then resource waste is reduced, but call setup time increases
Solution Approach 1:
The system dynamically adjusts bearer setup timing based on load conditions. When load is low, setup occurs before answer to minimize call setup time. When load is high, setup occurs after answer to avoid resource waste. This dynamic timing adjustment resolves the contradiction between reducing resource waste and minimizing call setup time by adapting to real-time system conditions.
4Reliability
If dedicated bearer setup is performed early, then quality of service is ensured, but resource allocation flexibility is reduced during peak loads
Solution Approach 1:
The system changes the bearer setup timing parameter based on load conditions to balance QoS assurance with resource flexibility. During peak loads, the parameter changes from early setup to delayed setup, preserving resource allocation flexibility for multiple users. During low-load periods, early setup restores QoS assurance. This adaptive parameter change resolves the contradiction between QoS reliability and resource allocation flexibility.
Data Source
AI summary
In a wireless communication system where a wireless access network includes a base station providing coverage in which to serve devices and where the wireless access network provides connectivity with an Internet Multimedia Subsystem (IMS), a method and system to help manage network resources by dynamically controlling when setup of a dedicated bearer will be invoked for a packet-based call placed by a device served by the base station. If the base station is lightly loaded, then setup of dedicated bearer could be invoked before the called party answers the call. Whereas, if the base station is heavily loaded, then setup of the dedicated bearer could be invoked if and when the called party has answered.