BTS Signal Sample Compression for Serial Link Capacity
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Solution Overview
Problem
Transceiver systems in wireless communication networks face challenges in managing increasing data volumes and evolving standards, requiring costly hardware upgrades due to limitations in physical size, power consumption, and geographic restrictions, with existing standards not addressing the need for compressing signal samples before transfer over serial data links.
Innovation Solution
Implementing a method for compressing signal samples at the RF unit or base station processor, formatting them for compatibility with data transfer protocols, and decompressing them at the receiving end to increase data transfer capacity and conserve resources, specifically using compression and decompression algorithms compatible with OBSAI and CPRI standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If signal samples are transferred uncompressed over serial data links, then data transfer capacity is limited by physical constraints, but hardware upgrades are required to handle increasing data volumes
Solution Approach 1:
The patent applies compression algorithms that transform signal samples from their original format to a compressed representation, changing the data parameters (bit depth, sampling rate, redundancy) to reduce the quantity of data transferred over the serial link. This allows existing hardware to handle larger effective data volumes without physical upgrades.
Solution Approach 2:
The patent creates a compressed copy of the signal samples that contains the essential information in a more compact form. This compressed copy is transmitted over the serial data link, allowing the same information to be conveyed using fewer physical resources.
2Quantity of substance
If more serial data links are added to increase data transfer capacity, then data volume handling improves, but physical size and power consumption increase
Solution Approach 1:
The patent combines multiple data streams into a compressed format that can be transmitted over existing serial links. By merging the functionality of multiple potential links into a single compressed stream, the system achieves equivalent or superior data transfer capacity without adding physical infrastructure, thereby reducing power consumption.
Solution Approach 2:
The compression process changes the data parameters to reduce the bandwidth requirement. This allows the system to maintain high data transfer capacity using existing links at lower power levels, avoiding the need to activate additional high-power transmission channels.
3Productivity
If uncompressed signal samples are transferred, then data processing requirements are high, but computing resources are consumed
Solution Approach 1:
The patent performs compression as a preliminary action before data transfer. By preprocessing the signal samples to remove redundancy and compact the information, the system reduces the computational burden during subsequent processing stages, thereby improving overall signal processing efficiency while conserving computing resources.
Data Source
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AI summary
[0090] A signal compression method and apparatus for a base transceiver system (BTS) in a wireless communication network provides efficient transfer of compressed signal samples over serial data links in the system. For the uplink, an RF unit of the BTS compresses signal samples resulting from analog to digital conversion of an analog signal received via an antenna. The RF unit transfers the compressed signal samples over the serial data link to the base station processor where they are decompressed prior to the normal signal processing operations. For the downlink, the base station processor compresses signal samples and transfers the compressed signal samples over the serial data link to the RF unit. The RF unit decompresses the compressed samples and converts the decompressed samples to an analog signal for transmission over an antenna. Compression and decompression can be incorporated into operations of conventional base stations and distributed antenna systems.