Wireless UE HARQ-ACK Joint Encoding for Multi-TRP Resource Conflicts
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently managing overlapping resources of uplink channels between multiple transmission reception points (TRPs), leading to difficulties in prioritizing data transmission and receiving HARQ-ACK information effectively.
Innovation Solution
A method is proposed for a user equipment (UE) to receive control information from multiple TRPs, prioritize data transmission based on overlapping resources, and jointly encode HARQ-ACK information for multiple TRPs, using a Downlink Assignment Index (DAI) configured based on indices related to the TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink channels for multiple TRPs are transmitted simultaneously using overlapping resources, then data transmission capacity is improved, but resource conflict and interference occur
Solution Approach 1:
The patent segments uplink resources by introducing a priority field in DCI that divides uplink channels into different priority levels. This allows simultaneous transmission of multiple uplink channels to different TRPs by assigning different priorities, thereby resolving resource conflicts while maintaining high data transmission capacity.
Solution Approach 2:
The patent changes the parameter structure of DCI by adding a priority field and modifying the uplink grant structure to include priority information. This parameter change enables the system to dynamically adjust resource allocation and resolve conflicts between overlapping uplink channels from multiple TRPs.
2Measurement precision
If HARQ-ACK information for multiple TRPs is transmitted separately, then feedback accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent merges HARQ-ACK information from multiple TRPs into a single uplink transmission by allowing multiple DCIs to schedule a single PUSCH or PUCCH. This combining approach maintains feedback accuracy for each TRP while significantly reducing signaling overhead compared to separate transmissions.
Solution Approach 2:
The patent creates a universal uplink resource that can serve multiple TRPs simultaneously. The single PUSCH or PUCCH resource can carry HARQ-ACK information for multiple TRPs, making the uplink channel multi-functional and reducing the total quantity of signaling resources needed.
3Productivity
If priority-based resource allocation is implemented for overlapping uplink channels, then resource utilization is improved, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring priority levels and pre-determining resource allocation rules before uplink transmission. The priority field in DCI and the predefined conflict resolution mechanisms are established in advance, allowing the system to efficiently manage overlapping resources without complex real-time decision-making, thus improving resource utilization while keeping system complexity manageable.
Data Source
AI summary
In the present disclosure, disclosed are a method for transmitting and receiving data in a wireless communication system and an apparatus therefor. Particularly, a method by which a user equipment (UE) supported by a plurality of apparatuses comprising a first apparatus and a second apparatus transmits and receives data in a wireless communication system comprises the steps of: receiving first control information from the first apparatus and receiving second control information from the second apparatus; receiving data from at least one of the first apparatus or the second apparatus; and transmitting, to at least one of the plurality of apparatuses, first feedback information regarding the first apparatus and second feedback information regarding the second apparatus, wherein the first control information and the second control information each comprises a downlink assignment index (DAI), and the DAI may be set on the basis of an index related to the plurality of apparatuses.