Mobile Station Response Time Window for Uplink Access
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Solution Overview
Problem
In wireless communication systems, mobile stations face power consumption and processing resource issues due to extended monitoring periods for assignment messages after transmitting access requests, leading to reduced battery life and increased processing overhead.
Innovation Solution
Implementing a method where mobile stations delay initiating a response time window after transmitting an access request, allowing them to look for assignment messages only during a specified interval, reducing the duration of monitoring and thereby minimizing power consumption and processing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile stations monitor for assignment messages continuously after transmitting access requests, then access reliability is improved, but power consumption increases and battery life decreases
Solution Approach 1:
The mobile station implements periodic monitoring of assignment messages rather than continuous monitoring. A response time window is defined with a specific duration during which the mobile station monitors for assignment messages corresponding to its access requests. After this window expires, monitoring stops until the next access request is transmitted. This periodic action reduces power consumption while maintaining access reliability by ensuring that monitoring occurs during the critical period when responses are expected.
2Reliability
If mobile stations extend monitoring periods to cover multiple retransmission intervals, then access reliability is improved, but processing resource consumption increases
Solution Approach 1:
The mobile station performs preliminary identification of assignment messages by checking for matching access request identifiers before full processing. When an assignment message is detected within the response time window, the mobile station first verifies whether it corresponds to one of its transmitted access requests by comparing identifiers. This preliminary action reduces processing overhead by avoiding full processing of irrelevant assignment messages while ensuring that relevant messages are captured for successful access.
Data Source
AI summary
A method of operating a mobile station requesting uplink access from a base station subsystem may include transmitting an access request to the base station subsystem, and delaying looking for a response matching the access request according to a delay interval. A response time window (RTW) may be initiated after the delay interval. During the response time window, the mobile station may look for an assignment message transmitted from the base station subsystem and matching the access request without looking for an assignment message matching the access request during the delay interval.