Centralized Spectrum Chunk Construction for Wireless Remote Units
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Solution Overview
Problem
Current wireless distributed communications systems (WDCS) require remote units to process and construct entire frequency bandwidths for individual communications channels, leading to increased complexity, cost, and power consumption, as well as inefficient data transmission rates due to the need to transmit unused portions of the frequency bandwidth.
Innovation Solution
Implementing a centralized spectrum chunk construction method where individual communications channels are grouped into spectrum chunks at a central unit, reducing the need for remote units to perform band-level signal construction and allowing for channel-level granularity conditioning, thereby reducing transmission data rates and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If remote units process and construct entire frequency bandwidths for individual communications channels, then channel-level control is maintained, but device complexity and power consumption increase
Solution Approach 1:
The frequency bandwidth is segmented into multiple spectrum chunks, each containing a subset of communications channels. Remote units receive and process only the specific spectrum chunks they need, rather than processing entire frequency bandwidths. This segmentation reduces the processing complexity at remote units while maintaining the ability to control individual channels within their assigned spectrum chunks.
Solution Approach 2:
The system introduces a new dimension of organization by grouping channels into spectrum chunks rather than processing channels individually or as complete bandwidths. This chunk-based organization creates an intermediate layer between individual channels and full bandwidths, allowing remote units to operate with reduced complexity while preserving channel-level control within their assigned chunks.
2Reliability
If remote units process and construct entire frequency bandwidths, then complete signal construction is achieved, but power consumption increases
Solution Approach 1:
The system extracts and processes only the necessary spectrum chunks at remote units, rather than processing entire frequency bandwidths. The central unit prepares and distributes specific spectrum chunks containing only the communications channels needed by each remote unit, reducing the processing load and power consumption at remote units while maintaining complete signal construction for their assigned channels.
Solution Approach 2:
Remote units perform partial processing by handling only specific spectrum chunks rather than complete frequency bandwidths. This partial action is sufficient to achieve reliable signal construction for their assigned channels while significantly reducing power consumption compared to processing entire bandwidths.
3Adaptability or versatility
If entire frequency bandwidth is transmitted to remote units, then all communications channels are available, but transmission data rates are reduced due to unused portions
Solution Approach 1:
The frequency bandwidth is divided into multiple spectrum chunks that are selectively transmitted to different remote units based on their specific needs. Each remote unit receives only the spectrum chunks containing the communications channels it requires, eliminating transmission of unused bandwidth portions and improving overall transmission data rates while maintaining adaptability to different service requirements.
Solution Approach 2:
Different remote units receive different spectrum chunks tailored to their local requirements and coverage areas. This localized allocation ensures that each remote unit has access to the specific communications channels needed for its area while avoiding the transmission overhead of sending complete frequency bandwidths to all units, thereby improving transmission efficiency.
4Productivity
If centralized spectrum chunk construction is implemented, then transmission data rates improve, but central unit complexity increases
Solution Approach 1:
The central unit consolidates the spectrum chunk construction function, combining multiple individual channel processing operations into unified spectrum chunks. By merging the processing of multiple communications channels into organized spectrum chunks at the central unit, the system improves transmission efficiency while the modular chunk-based approach manages the increased complexity through standardized processing blocks.
Data Source
AI summary
Digital wireless distributed communications systems (WDCS) employing a centralized spectrum chunk construction of communications channels for distribution to remote units are disclosed. Individual, discrete communications channels received from one or more signal sources are centrally constructed into spectrum chunks before being distributed to remote units. When the communications channels are constructed into spectrum chunks, the individual communications channels are positioned in their respective defined center radio frequency (RF) frequencies of their respective communications band before being distributed to the remote units. Thus, the remote units do not have to include the additional cost and associated power consumption of processing circuitry to construct the communications bands for individual communications channels. The remote units can up-convert the received spectrum chunks, which have already been centrally band constructed, to their respective frequencies according to their communication band(s).