Non-Contiguous WDCS Routing for Lower Downlink Power and Uplink Noise
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Solution Overview
Problem
Existing wireless distributed communications systems (WDCS) face inefficiencies in downlink transmission power and uplink noise due to all remote units receiving and distributing signals for all user equipment, leading to unnecessary energy consumption and increased noise levels.
Innovation Solution
A non-contiguous WDCS configuration where remote units are assigned to different cells, selectively distributing and receiving downlink and uplink signals only for user equipment within their coverage area, using a selective router circuit to manage subcarrier assignments and block unnecessary signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If all remote units receive and distribute downlink signals for all user equipment, then comprehensive coverage is achieved, but downlink transmission power increases unnecessarily
Solution Approach 1:
The system segments the downlink signal distribution by creating non-contiguous remote unit clusters, where each cluster serves specific user equipment. The selective router circuit divides and directs downlink signals only to the necessary remote units based on user equipment location, preventing unnecessary power consumption while maintaining comprehensive coverage through coordinated clustering.
Solution Approach 2:
The patent implements local quality by assigning different signal distribution characteristics to different remote unit clusters. Each cluster receives and distributes signals locally to its associated user equipment, with the selective router ensuring that each remote unit only processes signals relevant to its geographic cluster, optimizing power efficiency while maintaining coverage quality.
2Adaptability or versatility
If all remote units distribute signals across all frequency bands, then all communications services are supported, but uplink noise increases
Solution Approach 1:
The system segments frequency band distribution by remote unit cluster, where each non-contiguous cluster is assigned specific frequency bands and communications services. The selective router circuit filters and directs uplink signals only from remote units operating in the relevant frequency bands, reducing cumulative noise while maintaining support for multiple communications services across different clusters.
3Stability of the object's composition
If remote units are assigned to the same cell for contiguous coverage, then seamless handover is achieved, but signal-to-noise ratio deteriorates
Solution Approach 1:
The patent inverts the conventional contiguous clustering approach by implementing non-contiguous remote unit clusters. Instead of grouping adjacent remote units together, the system assigns non-adjacent remote units to the same cell cluster, which reduces noise accumulation while maintaining coverage continuity through strategic spatial distribution and selective routing.
Data Source
AI summary
Selective distribution and/or reception of wireless communications signals in a non-contiguous wireless distributed communications systems (WDCS) for reducing downlink transmission power and/or uplink noise is disclosed. A non-contiguous WDCS is a WDCS in which the remote units are clustered such that remote units with contiguous coverage areas receive downlink communications signals serviced by different cells to provide non-contiguous cell coverage areas. In one example, the WDCS is configured to selectively distribute, through each remote unit, only downlink communication signals for the cell that are identified as servicing the user equipment (UE) to conserve downlink power. In another example, the WDCS is configured to selectively receive uplink communications signals from remote units that contain user data from UE. Noise and/or interference signals associated with portions of the uplink communications signals that are not selectively received (e.g., blocked) are not combined with the selectively received uplink communications signals, thus reducing uplink noise.