Wireless Adaptive Packet Control Message Code Rate Adjustment
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Solution Overview
Problem
In wireless packet-switched networks, particularly those operating under the IEEE 802.16e standard, the broadcast of frame allocation information and control parameters in map messages results in a large bandwidth overhead due to low-rate coding, which is necessary for reliability but inefficient.
Innovation Solution
The system employs a variable-rate encoder and packet error counter to dynamically adjust the code rate of map messages based on packet error conditions and CINR feedback, allowing for more efficient allocation of map information to sub-maps, thereby reducing overhead by assigning the most suitable code rate for reliable transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If low-rate coding is used to improve map message reliability, then the reliability of control messages is improved, but the bandwidth overhead increases significantly
Solution Approach 1:
The system dynamically adjusts the code rate of map messages based on real-time packet error conditions and CINR feedback. The base station monitors packet error rates and channel quality, then adapts the coding rate accordingly - using lower code rates when errors are detected and higher code rates when channel conditions are good, thereby optimizing both reliability and bandwidth efficiency
Solution Approach 2:
The invention changes the code rate parameter of map messages based on measured packet error conditions and CINR values. By adjusting this critical parameter dynamically rather than using a fixed low-rate coding scheme, the system achieves reliable transmission only when necessary while reducing bandwidth overhead during good channel conditions
Data Source
AI summary
Embodiments of wireless adaptive control message apparatus, systems, and methods are described generally herein. Other embodiments may be described and claimed.