Wireless LAN Network Evaluation Scheduling for BTS Congestion
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Solution Overview
Problem
In wireless networks, the selection of base transceiver stations (BTSs) by client information handling systems often leads to congestion and interference due to the crowding onto high-RSSI access points, despite better data traffic conditions being available at other BTSs, which results in channel overloading, transmission delays, and increased power consumption.
Innovation Solution
An intelligent wireless network evaluation scheduling system that utilizes radiofrequency communications hardware to assess nearby BTSs during 'tune out' times, allowing for the selection of less congested BTSs with better quality of service (QoS) metrics, thereby minimizing collisions and optimizing data traffic levels without the need for additional antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If client information handling systems select BTSs based on highest RSSI signal strength, then signal quality is improved, but channel congestion and interference increase
Solution Approach 1:
The system performs preliminary evaluation of alternative BTSs during tune-out periods before actual data transmission is needed. By proactively assessing signal quality and congestion levels of candidate BTSs in advance, the client can switch to less congested channels before becoming overloaded, thus maintaining both signal quality and channel capacity.
Solution Approach 2:
The system continuously monitors RSSI levels, congestion indicators, and transmission success rates of available BTSs. This feedback mechanism allows dynamic adjustment of BTS selection strategy, switching from pure RSSI-based selection to a more sophisticated evaluation that considers both signal quality and current channel load, resolving the contradiction between signal quality and channel capacity.
2Productivity
If continuous evaluation of alternative BTSs is performed, then network optimization is improved, but power consumption increases
Solution Approach 1:
Instead of continuous evaluation, the system performs BTS assessments periodically during natural tune-out periods when the client is already not transmitting data. This periodic action during idle intervals provides network optimization benefits without requiring additional active transmission time, thus avoiding increased power consumption.
Solution Approach 2:
The system utilizes existing idle time periods (tune-out periods) when no data transmission is occurring to perform the evaluation of alternative BTSs. By self-service during already-wasted time, the system achieves network optimization without consuming additional energy that would be required for dedicated evaluation transmissions.
3Measurement precision
If additional antennas are deployed for network evaluation, then evaluation accuracy is improved, but device complexity increases
Solution Approach 1:
The existing antennas are designed to serve multiple functions: primary data transmission/reception and secondary network evaluation. By making the antennas universal, the system can perform BTS evaluation using the same hardware already present, eliminating the need for additional dedicated evaluation antennas and thus avoiding increased device complexity while maintaining evaluation accuracy.
Solution Approach 2:
The system combines the data transmission function and network evaluation function into a single antenna system. During tune-out periods, the same antennas used for data communication are repurposed for evaluating alternative BTSs, merging two functions into one hardware subsystem and avoiding the complexity of separate evaluation antennas.
Data Source
AI summary
An information handling system comprising a wireless interface for transmitting a data frame via a wireless link in a wireless neighborhood having a plurality of wireless base transceiver stations (BTSs), a plurality of antenna systems operating via the wireless interface executing code instructions for a carrier sense multiple access (CSMA) media access control protocol employing back-off time periods to avoid packet collision, a radio scanning modem for scanning a plurality of radio channels for the BTSs operating in the wireless neighborhood during a tune out time upon detection of carrier frequency operation by a carrier sense mechanism indicating transmission on the wireless link from another device and ending at a next distributed inter-frame space period of the CSMA protocol, a processor implementing a network evaluation scheduling system for detecting a BTS load for each detected BTS system operating in the wireless neighborhood and determining alternative wireless links with alternative BTSs based on BTS traffic load, and the wireless interface transmitting a data frame upon expiration of a back-off period assigned to the information handling system and detection of no carrier frequency by the carrier sense mechanism.