Power Distributor for DSL Beamforming Power Sharing
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Solution Overview
Problem
Existing reverse-power allocation systems in communications networks are inadequate for modern DSL technologies, such as beamforming, where unused twisted pair lines are used to increase bit-rate, leading to complexities in power sharing and inefficient power distribution, as they assume a direct association between twisted pair connections and customer premises equipment.
Innovation Solution
A power distributor system that controls electrical power delivery across multiple connections, using a vectoring unit for fair power apportionment and a beamforming unit to modify power distribution, allowing inactive lines to contribute power for beamforming, ensuring active users provide additional power required for enhanced services without burdening nominal users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming techniques are used to increase bit-rate by utilizing unused twisted pair lines, then network capacity and data transmission performance are improved, but power distribution complexity increases and existing power allocation algorithms become inadequate
Solution Approach 1:
The power allocation algorithm is made dynamic by continuously monitoring which twisted pair lines are actively carrying traffic and automatically adjusting power distribution accordingly. The system dynamically identifies active lines versus unused lines participating in beamforming, and reallocates power burden to match current operational status rather than relying on static nominal associations.
Solution Approach 2:
The system changes the parameter of power allocation from being based on nominal line-customer associations to being based on real-time traffic activity detection. By monitoring whether lines are actively carrying traffic or participating in beamforming operations, the system adapts power distribution parameters to match actual operational requirements.
2Productivity
If inactive twisted pair lines are used for beamforming to enhance active lines, then downstream data capacity increases, but it becomes unclear which customer premises equipment should bear the power burden
Solution Approach 1:
The system implements feedback mechanisms where the network equipment monitors traffic patterns and beamforming participation of each twisted pair line, then uses this information to determine appropriate power allocation. The feedback loop ensures that power burden is assigned based on actual line utilization and beamforming contribution rather than nominal associations.
Solution Approach 2:
The system performs preliminary identification of which lines are actively carrying traffic versus which are unused but participating in beamforming. By detecting active lines first and excluding them from the power-sharing pool, the system preliminarily determines the correct subset of equipment that should bear the power burden before allocation occurs.
3Ease of operation
If traditional fair power sharing algorithms are applied to all lines in a vector group, then power is distributed equally, but inactive lines used for beamforming are incorrectly burdened with power contribution
Solution Approach 1:
The system applies different power allocation rules to different subsets of lines based on their operational status. Active lines that are nominally associated with customers are treated differently from inactive lines participating in beamforming. This local differentiation ensures that only appropriately responsible customers bear the power burden while maintaining fairness among the correct group.
Solution Approach 2:
The system segments the vector group into two distinct subsets: active lines carrying nominal traffic and inactive lines participating in beamforming. By dividing the group and applying separate power allocation logic to each segment, the system avoids incorrectly burdening customers associated with inactive beamforming lines while maintaining fair distribution among active line customers.
Data Source
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Figure 2
AI summary
A power distributor (61) for a communications system for controlling delivery of electrical power drawn over a plurality of electrical communications connections (20-24) allocated to respective customer premises equipment, to provide electrical power to network components (5, 9) within a network is arranged to control collection of electrical power to be drawn from each connection in accordance with power requirements of services operated by or for its respective customer premises equipment, independent of the identities of the electrical connections used to deliver those services. In particular when electrical connections (20, 22) are not being used by their respective customers they may instead be used by a beam- forming system (9) to support improved service to a customer associated with a different connection (21), and the additional electrical power to power the beam-former (9) is drawn from the connection (21) associated with the customer receiving the enhanced service.