Access Terminal Transmit Rate Control for Macro Interference Mitigation
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Solution Overview
Problem
In wireless networks, access terminals communicating with private access points can cause interference at macro access points, which existing technologies fail to effectively mitigate, leading to performance degradation in macro networks.
Innovation Solution
A method to determine and enforce a maximum allowable transmit rate for access terminals to communicate with private access points, constraining interference at macro access points by estimating path gains and transmit power limits, using equations such as ∑i=1NPiATGiM≤ΔPI,max, and adjusting packet sizes through attributes like PermittedPayload to manage interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access terminals communicate with private access points at high transmit rates, then communication performance with private access points is improved, but interference at macro access points increases
Solution Approach 1:
The system dynamically adjusts the transmit rate parameter of access terminals based on channel conditions and interference levels. By changing this parameter adaptively, the system optimizes communication performance while controlling interference at macro access points through calculated maximum allowable transmit rates.
Solution Approach 2:
The system implements a feedback mechanism where macro access points report interference levels to a coordinator, which then determines maximum allowable transmit rates and communicates them back to access terminals. This closed-loop feedback enables continuous optimization of transmit rates to balance performance and interference control.
2Object-affected harmful factors
If maximum allowable transmit rate is enforced to limit interference, then interference at macro access points is reduced, but communication performance with private access points deteriorates
Solution Approach 1:
The maximum allowable transmit rate is not fixed but dynamically adjusted based on real-time channel conditions, path gains, and interference levels. This dynamic adaptation allows the system to maximize transmit rates when conditions permit while ensuring interference limits are never exceeded, thus resolving the performance-interference tradeoff.
Solution Approach 2:
The system changes the transmit rate parameter adaptively based on calculated maximum allowable values that satisfy interference constraints. By continuously adjusting this parameter according to current system state, the system achieves optimal performance within acceptable interference boundaries.
3Reliability
If transmit power is increased to improve communication reliability, then communication reliability is improved, but interference at macro access points increases
Solution Approach 1:
The system adjusts the transmit power parameter based on calculated maximum allowable values that satisfy interference constraints at macro access points. By changing this parameter adaptively rather than using fixed high power, the system achieves reliable communication while controlling harmful interference to the macro network.
Data Source
AI summary
An access terminal is enabled to communicate with a private access point while interference caused by the access terminal is mitigated. A maximum allowable transmit rate of the access terminal for communication with the private access point is determined. The access terminal is caused to communicate at a transmit rate at or below the maximum allowable transmit rate.