Coordinated Multipoint Access Point Selection for Uplink Quality
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Solution Overview
Problem
Current wireless communication networks face challenges in determining the optimal selection of access points for Coordinated Multipoint (COMP) uplink reception, as existing methods do not effectively consider uplink quality and the number of transmission opportunities, leading to potential performance degradation due to backhaul delays and increased computational load.
Innovation Solution
A method and device that select access points for COMP uplink reception by obtaining uplink measurement results, combining candidate access points into sets, estimating uplink quality and transmission opportunities, and choosing the optimal set based on these metrics, taking into account backhaul delay and computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more access points are used for COMP uplink reception, then uplink quality is improved, but backhaul delay and computational load increase
Solution Approach 1:
The system dynamically changes the parameter of access point selection by evaluating multiple candidate sets with different compositions. Each set represents a different configuration of access points, and the system selects the optimal set based on current conditions, thereby adapting the system parameters to balance uplink quality against backhaul delay and computational load.
Solution Approach 2:
The access point selection is made dynamic through continuous evaluation of uplink measurement results and transmission opportunity metrics. The system can adaptively change which access points are included in the COMP reception set based on real-time channel conditions and backhaul status, rather than using a static configuration.
2Reliability
If more access points are used for COMP uplink reception, then uplink quality is improved, but device complexity increases
Solution Approach 1:
Instead of evaluating all possible combinations of access points, the system applies partial action by considering only a limited number of candidate sets. This reduces the computational complexity from evaluating the full combinatorial space to evaluating a manageable subset of pre-identified candidate sets, while still achieving near-optimal performance.
Solution Approach 2:
The system segments the complex task of access point selection by dividing it into distinct evaluation components: obtaining uplink measurements, forming candidate sets, estimating uplink quality for each set, determining transmission opportunities, and making the final selection. This segmentation allows each component to be processed independently and efficiently.
3Ease of operation
If access points are selected without considering transmission opportunities, then selection process is simpler, but user performance degrades
Solution Approach 1:
The system performs preliminary action by pre-obtaining uplink measurement results and pre-identifying candidate access point sets before making the final selection. This preliminary preparation of measurement data and candidate sets simplifies the actual selection process while ensuring that transmission opportunities are already factored into the evaluation, thereby maintaining both simplicity and performance.
Data Source
AI summary
The proposed technology involves a mechanism for selecting, for a user, access points for coordinated multipoint (COMP) uplink reception. The method comprises obtaining, for each of a number of candidate access points, at least one uplink measurement result. The method also involves combining candidate access points to form at least two different sets of access points from the candidate access points. The method comprises estimating, for each one of the at least two different sets of access points, an uplink quality measure based on the uplink measurement results of the considered set of access points, and determining, for each one of the at least two different sets of access points, a measure representative of the number of transmission opportunities available to the user for the considered set of access points over a given period of time. The method also comprises selecting which one of the at least two different sets of access points to use for COMP uplink reception based on the uplink quality measure and the measure representative of the number of transmission opportunities available to the user over the given period of time.