Mobile Station Bandwidth Request Timer for QoS Resource Allocation
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Solution Overview
Problem
Current wireless communication systems lack the ability to set a proper resource allocation standby time based on Quality of Service (QoS) and fail to minimize the overhead of ACK/NACK messages in broadband wireless access systems, leading to inefficient resource allocation and increased latency.
Innovation Solution
A method where a mobile station transmits a bandwidth request indicator and quick access message to a base station, with a timer value determined by the acknowledgement from the base station, allowing for differentiated resource allocation standby times based on QoS levels and priorities, and enabling efficient retransmission of messages if resources are not allocated within the specified time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed resource allocation standby time is used for all mobile stations, then the system operation is simple, but the resource allocation efficiency is reduced due to inability to accommodate different QoS requirements
Solution Approach 1:
The patent implements dynamic resource allocation standby time by allowing the base station to set different standby time values (e.g., first standby time for high-priority QoS, second standby time for low-priority QoS) based on the mobile station's QoS level. This dynamic adjustment resolves the contradiction by adapting the standby time to specific service requirements rather than using a fixed value for all stations.
Solution Approach 2:
The patent applies different resource allocation standby time parameters to different mobile stations or different service flows based on their QoS levels. High-priority traffic receives a first standby time while low-priority traffic receives a second standby time, allowing local optimization of resource allocation for each QoS category rather than uniform treatment.
2Reliability
If ACK/NACK messages are transmitted for every bandwidth request, then the reliability of resource allocation is improved, but the message overhead increases
Solution Approach 1:
The patent implements partial ACK/NACK transmission by sending acknowledgment messages only when necessary (e.g., when resource allocation decisions need to be confirmed or when mobility management requires it). This partial action approach maintains reliability for critical operations while reducing overall message overhead compared to transmitting ACK/NACK for every single bandwidth request.
3Productivity
If the mobile station waits for a long time for resource allocation, then the resource allocation accuracy is improved, but the latency increases
Solution Approach 1:
The patent dynamically adjusts the resource allocation standby time based on QoS levels, allowing high-priority traffic to use shorter standby times (reducing latency) while low-priority traffic uses longer standby times (improving allocation accuracy). This dynamic parameter adjustment resolves the contradiction by making the waiting time adaptive rather than fixed.
Solution Approach 2:
The patent changes the standby time parameter according to QoS requirements, using different time values for different service priorities. This parameter change allows the system to optimize between latency and allocation accuracy by selecting appropriate time values based on the specific service requirements.
Data Source
AI summary
A random access method in a wireless communication system is disclosed. The present invention includes transmitting a bandwidth request indicator and a quick access message from a mobile station to a base station and starting a timer having a timer value determined according to an acknowledgement from the base station.