AP Sectorization for Coordination Group Interference Control
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Solution Overview
Problem
Existing wireless networks struggle with determining which client devices belong to which sector around multiple Access Points (APs), leading to inefficiencies in spatial reuse and interference management.
Innovation Solution
Implementing sectorization by determining sectors around APs and associating client devices with specific sectors based on Received Signal Strength Indicator (RSSI) thresholds, using a centralized controller to manage transmissions to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sectorization is implemented to improve spatial reuse efficiency, then simultaneous transmissions to sector-specific client devices are enabled, but device complexity increases due to the need for centralized controller coordination and RSSI threshold management
Solution Approach 1:
The patent divides the wireless network into multiple sectors around each Access Point, with each sector assigned to a specific coordination group. This segmentation enables simultaneous transmissions to different sectors without interference, improving spatial reuse efficiency. The controller manages these segmented sectors independently, allowing parallel operations that would otherwise conflict.
Solution Approach 2:
A centralized controller is introduced as an intermediary between multiple Access Points and client devices. The controller receives RSSI measurements, determines sector assignments, and coordinates transmission timing to minimize interference. This intermediary manages the complexity of coordination centrally, allowing distributed APs to operate simultaneously without direct peer-to-peer coordination overhead.
2Object-affected harmful factors
If client devices are associated with specific sectors based on RSSI thresholds, then interference management is improved, but measurement precision requirements increase due to the need for accurate RSSI determination
Solution Approach 1:
The patent uses RSSI (Received Signal Strength Indicator) as a parameter to determine sector assignments and transmission coordination. By establishing RSSI thresholds and using signal strength measurements, the system can reliably identify which client devices should be served by which coordination groups, enabling effective interference management without requiring complex measurement systems.
Data Source
AI summary
Improved granularity of Coordination Groups (CGs) using sectorization may be provided. A plurality of sectors around a plurality of Access Points (APs) may be determined. Then, for each of the plurality of APs, it may be determined which sector client devices associated with each of the plurality of APs are in. Next, each of the plurality of APs may be caused to transmit to client devices in a first one of the plurality of sectors.