Coordinated Base Station Error Correction via Soft-Combined HARQ
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Solution Overview
Problem
Current wireless networks with coordinated base stations face challenges in minimizing interference and optimizing error correction, leading to increased transmit power and latency, especially at cell edges, due to the independent nature of error correction processes across multiple connections.
Innovation Solution
The implementation of methods and apparatus that allow for coordinated error correction among multiple base stations, including the transmission of partial backward error correction data packets based on received transmission parameters, and the use of bundled acknowledgments to reduce transmission power and latency by soft-combining redundant data transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If independent error correction processes are used across multiple coordinated base stations, then each base station can operate autonomously, but transmit power increases and latency is introduced
Solution Approach 1:
The patent combines error correction processes across multiple coordinated base stations by implementing joint encoding where a first base station encodes a first code block and a second base station encodes a second code block, with both code blocks being soft-combined at the receiver. This merging of encoding operations allows the base stations to operate cooperatively rather than independently, reducing the transmit power required while maintaining autonomous operation capabilities.
2Ease of operation
If independent error correction processes are used across multiple coordinated base stations, then each base station can operate autonomously, but latency increases
Solution Approach 1:
The patent merges error correction operations across multiple base stations through joint encoding and soft-combining, where the receiver combines code blocks from multiple base stations to improve decoding efficiency. This coordinated approach reduces latency compared to independent error correction processes while preserving autonomous operation capabilities.
3Use of energy by stationary object
If coordinated error correction is implemented among multiple base stations, then transmit power is reduced, but interference between base stations must be minimized
Solution Approach 1:
The patent segments the error correction process into separate encoding operations at different base stations, where each base station independently encodes its own code block. This segmentation allows coordinated error correction to reduce transmit power while minimizing interference, as each base station operates semi-independently rather than requiring full coordination that would increase interference.
4Productivity
If coordinated error correction is implemented among multiple base stations, then spectral efficiency is enhanced, but device complexity increases
Solution Approach 1:
The patent segments the coordinated error correction system into independent encoding modules at each base station, where the first base station performs first encoding on a first code block and the second base station performs second encoding on a second code block. This segmentation enhances spectral efficiency through coordination while managing device complexity by maintaining modular, semi-independent operation at each base station.
Data Source
AI summary
Methods and apparatus for coordinated error correction among a set of wireless base stations in communication with one another. In one embodiment, the wireless base stations are part of a cellular network having various cellular base stations (including a serving base station, and multiple supplemental base stations), and transmit multiple redundant versions of a transport block using a Hybrid Automatic Repeat Request (HARQ) based scheme. The aggregate of the multiple redundant versions of the transport block are soft combined and acknowledged (ACK) or not-acknowledged (NACK) by the cellular equipment. The serving base station and supplemental base station devices dynamically configure the bundled acknowledgment operation based on various desired operational attributes relating to the operational parameters of the network.


