Wireless Sector Load Balancing via Offset-Adjusted Server Selection
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Solution Overview
Problem
Wireless communication systems face challenges in load balancing, where heavily loaded sectors often adjacent to lightly loaded sectors, leading to performance degradation due to inefficient distribution of terminals across sectors.
Innovation Solution
The technique involves server selection based on load-balancing information, where terminals or network entities use server selection information comprising offsets, DRCLock, and metrics to select the best sector for communication, adjusting received signal quality measurements and prioritizing sectors with lighter loads and better backhaul capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are served by the sector with the highest received signal quality, then communication quality is improved, but load imbalance occurs causing performance degradation
Solution Approach 1:
The patent modifies the server selection criterion by introducing a load-based offset parameter. Instead of selecting solely based on received signal quality, the system adjusts the selection metric by adding an offset that reflects sector load conditions, thereby balancing communication quality with load distribution
Solution Approach 2:
The system implements feedback by having sectors report their load status to terminals. Terminals use this feedback information to adjust their server selection decisions, choosing sectors not only based on signal quality but also considering current load conditions to achieve better system-wide performance
2Productivity
If load balancing is implemented through server selection, then system capacity is improved, but measurement precision requirements increase
Solution Approach 1:
The patent introduces server selection information as an intermediary element that mediates between raw signal quality measurements and final server selection decisions. This intermediary layer processes and adjusts the selection criteria based on load conditions, reducing the direct impact of measurement variations on system performance
Data Source
AI summary
Techniques for selecting a serving sector for a terminal based on server selection information in order to balance the load of sectors in a wireless communication system are described. The server selection information for each sector may be set based on the load of the sector and may be used to rank the sector for selection as a serving sector. In one design, a terminal may receive server selection information for multiple sectors. The server selection information for each sector may include an offset used to adjust a measurement made by the terminal for the sector, a priority of the sector for selection as a serving sector, a DRCLock set based on the load of the sector, etc. The terminal may determine received signal qualities of the sectors. The terminal may then select one of the sectors as a serving sector based on the server selection information and the received signal qualities of the sectors.