Wireless Resource Reuse via SINR Threshold Evaluation
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Solution Overview
Problem
In wireless communications systems lacking centralized control, there is a challenge in determining whether a wireless resource in use by one connection can be reused by another without compromising communication quality due to limited air link resources and potential interference.
Innovation Solution
A method where a wireless device evaluates the Signal to Interference plus Noise Ratio (SINR) based on control signals received from existing connections to decide whether it can reuse a resource, ensuring that both connections can maintain acceptable communication quality by setting threshold criteria for SINR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless resources are reused concurrently by multiple connections, then system efficiency and throughput are improved, but interference between connections increases and communication reception quality deteriorates
Solution Approach 1:
The patent applies preliminary action by having the second connection evaluate estimated SINRs before actually reusing the resource. The device determines whether to reuse the resource based on predicted interference levels calculated from control signals received during the first connection's transmission, preventing harmful interference before it occurs
Solution Approach 2:
The patent implements feedback mechanisms where the second connection receives control signals from the first connection's devices, measures received power, and uses this information to estimate SINR values. This feedback loop allows the system to adaptively decide on resource reuse based on actual interference conditions observed during preliminary signal exchange
2Ease of operation
If centralized control is used to manage resource reuse, then interference management is simplified, but system complexity and control overhead increase
Solution Approach 1:
The patent applies self-service by enabling each wireless device to autonomously evaluate whether it can reuse a resource based on local measurements and estimated SINRs. The second connection independently determines resource reuse eligibility using control signals received from the first connection's devices, eliminating the need for centralized control while maintaining interference management capability
Solution Approach 2:
The patent uses control signals as intermediaries that carry information about the first connection's transmission parameters. These control signals enable the second connection to estimate interference levels without requiring direct coordination or centralized control, facilitating decentralized resource reuse decisions
Data Source
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AI summary
Methods and apparatus related to reuse of a wireless resource are described. Various methods and apparatus are well suited to wireless communications systemslacking centralized control, e.g., an ad hoc peer to peer wireless communicationssystem. A wireless device, corresponding to a second connection, evaluates whether ornot it can reuse a resource associated with a first connection. The first connection is,e.g., an existing active connection and the second connection is, e.g., a potentialconnection. The wireless device receives one or more control signals from one or morefirst connection devices. The wireless device determines, based on the received controlsignals, one or more estimated SINRs characterizing expected results in the system ifthe two connections should use the same resource concurrently. The wireless devicemakes a resource reuse decision based on the determined estimated one or more SINRsand a threshold criteria.