Wireless Resource Partitioning for Interference Mitigation
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Solution Overview
Problem
Conventional wireless communication systems face interference issues due to differences in power levels between base stations, leading to jamming and failed access requests, especially in scenarios where a mobile terminal is located between base stations of varying power levels, resulting in dominant interference conditions that hinder communication.
Innovation Solution
The method involves identifying communication channels, constructing interference reduction request messages, and transmitting them to terminals to reserve uplink communication resources when interference exceeds a threshold, using resource coordination modules to manage and partition resources in time, frequency, or code to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If base stations transmit at high power levels to cover large areas, then coverage area is improved, but interference to neighboring base stations increases
Solution Approach 1:
The patent segments communication resources into different types (access resources, coordination resources, data resources) and allocates them to different base stations in overlapping coverage areas. This allows high-power transmission for coverage while preventing interference through resource partitioning.
Solution Approach 2:
The patent applies different resource allocation strategies to different geographic locations and base station types. Macro base stations use certain resource sets while pico/femto base stations use other resource sets, allowing each to operate at optimal power levels without causing interference to others.
2Reliability
If a mobile terminal connects to a low power base station, then connection is established, but the terminal becomes jammed by higher power neighboring base stations
Solution Approach 1:
The patent establishes resource coordination messages before actual data transmission begins. The serving base station identifies potential interfering base stations and pre-arranges resource allocation to prevent jamming before it occurs, ensuring reliable connection to low-power base stations.
Solution Approach 2:
The patent introduces coordination messages as an intermediary mechanism between the serving base station and interfering base stations. These messages facilitate resource coordination and prevent jamming by ensuring that resource allocations are compatible across different power levels.
3Ease of operation
If regular access requests are transmitted in dominant interference conditions, then access attempts are made, but requests fail to be received or responses cannot be received
Solution Approach 1:
The patent extracts access requests and response messages from the general data communication resources and places them in dedicated coordination resources. This separation ensures that access signaling can occur reliably even when data resources are subject to dominant interference conditions.
Data Source
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AI summary
Systems and methodologies are described that facilitate improved resource partitioning and interference management in a wireless communication system. Techniques are described herein for the transmission and use of various types of signaling, such as Access Request commands, Reverse Link Special Resource Utilization Message (R-SRUM) signaling, Forward Link Special Resource Utilization Message (F-SRUM) signaling, and the like, for managing interference associated with range extension, restricted association networks, and other jamming scenarios. As described herein, downlink resource coordination and interference management are accomplished through the use of Access Request or R-SRUM signaling conducted in a unicast or broadcast fashion, and uplink resource coordination and interference management are accomplished through the use of F-SRUM signaling. As further described herein, a clean communication channel such as a Low Reuse Preamble (LRP) channel can be utilized for interference management signaling and/or leveraged for determining timing of various signaling messages.