HARQ Buffer Management for Carrier Aggregation Decoding
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Solution Overview
Problem
In carrier aggregation or sub-band aggregation scenarios, improving the decoding rate is a challenge due to the limited availability of radio spectrum resources and the difficulty in finding continuous large bandwidth for mobile communication.
Innovation Solution
The method involves using control information with a new carrier indicator field and HARQ process identifier to indicate the HARQ buffer for combining initially transmitted and retransmitted data, allowing for soft combination across different frequency bands, thereby enhancing decoding success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation or sub-band aggregation is used to increase spectrum resources, then data throughput is improved, but decoding success rate deteriorates
Solution Approach 1:
The patent segments the aggregation of carriers or sub-bands into separate HARQ entities, with each entity managing its own HARQ processes independently. This segmentation allows data from different frequency bands to be organized into distinct buffers, enabling separate decoding processes that can successfully handle the aggregated spectrum resources while maintaining individual decoding integrity for each segment.
2Adaptability or versatility
If multiple continuous or discontinuous spectrums are aggregated, then radio spectrum utilization is improved, but resource scheduling complexity increases
Solution Approach 1:
The patent divides the aggregated spectrum resources into multiple HARQ entities, where each entity independently manages its own set of HARQ processes and buffers. This segmentation simplifies resource scheduling by allowing each entity to handle its own resources autonomously, reducing the overall scheduling complexity despite utilizing multiple continuous or discontinuous spectrums.
Solution Approach 2:
Each HARQ entity is designed with universal functionality to manage multiple HARQ processes and handle both initial transmissions and retransmissions across different carriers or sub-bands. This multi-functionality allows the system to efficiently utilize aggregated spectrum resources while maintaining a standardized management approach that reduces complexity.
Data Source
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AI summary
This application provides a data processing method and apparatus. The method includes: receiving, by a first device, control information, where the control information includes information about a first resource and information about a HARQ process; further receiving, by the first device on a second resource, data associated with the control information; and placing the data into a buffer of the HARQ process of a HARQ entity associated with the first resource. The associated data is sent on the plurality of resources. For example, the initially transmitted data and the retransmitted data are stored in the buffer of the specified process of the specified HARQ entity by using an indication of the control information, to implement combination and improve a decoding success rate.