Low-Layer Processing Module for Distributed Base Station Bandwidth Reduction
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Solution Overview
Problem
Existing telecommunication systems face challenges in efficiently distributing base station functionality, particularly in large structures, which can lead to increased resource costs and bandwidth requirements.
Innovation Solution
The integration of a low-layer processing module within the telecommunication system, capable of performing secondary eNodeB (SeNB) functionality and physical layer processing, allows for the distribution of base station functionality across various units in the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base station functionality is distributed across multiple radio units in a DAS, then wireless coverage capacity is improved, but bandwidth requirements and resource costs increase
Solution Approach 1:
The patent segments the base station functionality by introducing a low-layer processing module that handles physical layer processing (such as FFT, IFFT, channel coding, and modulation) separately from higher layer processing. This segmentation allows radio units to receive pre-processed signals with reduced bandwidth requirements while maintaining distributed coverage capacity.
Solution Approach 2:
The low-layer processing module acts as an intermediary between the core network and distributed radio units. It receives full-bandwidth signals from the core network, performs physical layer processing to extract narrower bandwidth channels, and distributes these processed signals to multiple radio units, thereby reducing the bandwidth requirements for each radio unit while maintaining overall system capacity.
2Adaptability or versatility
If secondary eNodeB functionality is integrated into the DAS, then system versatility is improved, but device complexity increases
Solution Approach 1:
The low-layer processing module is designed to perform multiple functions including physical layer processing for both uplink and downlink directions, support for multiple carriers, and compatibility with existing DAS architectures. This multi-functionality achieves system versatility without proportionally increasing device complexity, as a single module handles diverse processing requirements.
Solution Approach 2:
The patent merges the low-layer processing module with existing DAS infrastructure components, allowing the secondary eNodeB functionality to be integrated into the current architecture rather than requiring completely separate systems. This merging approach achieves versatility while leveraging existing resources to minimize complexity increases.
Data Source
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AI summary
Examples of distributed base station functionality in a telecommunication system (e.g., a distributed antenna system) are disclosed. In some aspects, the telecommunication system can include an interface with circuitry configured to communicate with one or more base-station entities, base-station components (such as baseband units or remote radio heads), or core-network entities. The telecommunication system can also include radio units that are positioned in an area for providing wireless coverage to terminal devices. The telecommunication system can also include a head-end unit that is communicatively coupled between the interface and the radio units. One or more devices in the telecommunication system can include a low-layer processing module. In some aspects, the low-layer processing module can perform functionality of a secondary e NodeB, such as (but not limited to) radio transport layer processing.In additional or alternative aspects, the low-layer processing module can perform physical layer processing that is split between uplink physical layer processing and downlink physical layer processing and/or split between secondary and primary physical layer processing.