Resource Mapping for Wireless Data Transmission
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Solution Overview
Problem
In wireless communication systems, the existing methods for data transmission and reception by user equipment (UE) supported by multiple transmission points (TPs) face challenges in optimizing resource mapping, especially when resource regions are partially overlapped, leading to inefficiencies in retransmissions and difficulties in blind detection due to incomplete control information reception.
Innovation Solution
A method for resource mapping that involves receiving control information from multiple TPs, decoding it to obtain resource allocation information, and mapping data based on a configured order for transmission units such as code blocks or transmission blocks, optimizing resource usage and enabling blind detection in partially overlapped resource regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TPs transmit data to UE using non-coherent joint transmission with partially overlapped resource regions, then data transmission reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The patent segments the resource regions into first resource regions (commonly allocated by both TPs) and second resource regions (allocated by only one TP). This segmentation allows the UE to separately decode control information for each region type, simplifying the overall resource allocation complexity while maintaining reliable transmission through diversified resource usage.
Solution Approach 2:
The patent applies preliminary action by performing blind detection to identify NCJT resource regions before actual data transmission. By pre-identifying which resource regions will be used for non-coherent joint transmission, the system prepares the UE in advance, reducing the complexity of real-time resource allocation and improving transmission reliability.
2Measurement precision
If control information from multiple TPs is received and decoded, then resource allocation accuracy is improved, but detection difficulty increases when control information is incomplete
Solution Approach 1:
The patent applies partial action by allowing the UE to successfully decode resource allocation information even when control information from only one TP is received. The UE can identify first resource regions from the received control information and perform blind detection for second resource regions, achieving sufficient resource allocation accuracy without requiring complete control information from all TPs.
Solution Approach 2:
The patent uses preliminary blind detection to identify NCJT resource regions before data transmission. This preliminary identification reduces the detection difficulty during actual reception, as the UE already knows which resource regions to expect data in, even if control information from some TPs is missing.
3Productivity
If data is mapped based on transmission unit configuration, then retransmission efficiency is improved, but mapping complexity increases
Solution Approach 1:
The patent applies local quality by configuring different mapping orders for different transmission units (code blocks vs. transmission blocks). For code blocks, the mapping order is layer→frequency domain→time domain→second resource region, while for transmission blocks, it is layer→first resource region order→second resource region order→frequency domain→time domain. This localized adaptation to different data unit types improves retransmission efficiency without requiring a completely complex mapping system.
Data Source
AI summary
A method for receiving data by user equipment in a wireless communication system comprises: receiving first control information from a first apparatus and second control information from a second apparatus; obtaining resource allocation information by decoding the first control information and the second control information; and receiving the data from at least one of the first apparatus and the second apparatus, based on the resource allocation information, wherein the resource allocation information comprises information for resource regions comprising (i) a first resource region commonly allocated from the first apparatus and the second apparatus, and (ii) a second resource region allocated from one of the first apparatus and the second apparatus, and the data is mapped to at least one of the first resource region and the second resource region, on the basis of a resource mapping order set according to a transmission unit of the data.