PDSCH Time Domain Resource Allocation for High-Frequency Wireless
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently allocating time domain resources for high-frequency channels, particularly in ensuring omnidirectional coverage and reducing the 'absolute overhead' of system broadcast messages, due to limited spectrum resources and high propagation losses.
Innovation Solution
A method and apparatus for time domain resource allocation in a physical downlink shared channel (PDSCH) that involves acquiring and determining configuration information such as search space, control resource set, and bandwidth part type, and using this information to create a PDSCH time domain resource allocation table that corresponds with the multiplexing pattern between synchronization signals and control resource sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming method is used to improve antenna gain for high frequency communication, then coverage performance is improved, but the number of beams increases to several tens or hundreds, causing the absolute overhead of system broadcast message to increase
Solution Approach 1:
The patent segments the system broadcast message transmission by associating different messages with specific beams. Instead of transmitting all system broadcast messages in every beam direction, the patent divides the broadcast messages across multiple beams, reducing the overhead in each individual beam while maintaining omnidirectional coverage capability.
2Reliability
If more antenna elements are accommodated in unit area for high frequency communication, then antenna gain is improved, but the complexity of resource allocation increases
Solution Approach 1:
The patent introduces dynamic resource allocation mechanisms that adapt to the increased number of antenna elements. By making resource allocation dynamic rather than static, the system can efficiently manage the complexity introduced by more antenna elements while maintaining high antenna gain for improved coverage.
Data Source
AI summary
Provided are a time domain resource allocation method and apparatus. The method includes the following operations. A terminal acquires at least one of first information including search space configuration information, control resource set (CORESET) configuration information, and a bandwidth part type. A PDSCH time domain resource allocation table is subsequently determined according to the first information and a multiplexing pattern between a synchronization signal/physical broadcast channel block (SSB) and a CORESET.