Multi-TRP Communication Timing Control for 5G Subband Optimization
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, the use of multiple transmission and reception points (TRPs) can lead to performance degradation due to short cyclic prefixes, especially when communicating with terminals in high-frequency bands.
Innovation Solution
A method and apparatus for controlling transmission and reception timings of multiple TRPs, allowing them to perform smooth communication with terminals by forming TRP groups, configuring subbands, setting timing references, and adjusting timings based on terminal movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple TRPs are used to expand communication coverage and support high data traffic, then communication coverage and throughput are improved, but performance degradation occurs due to short cyclic prefixes
Solution Approach 1:
The patent applies dynamics by making the cyclic prefix length adjustable rather than fixed. The system dynamically selects between a first cyclic prefix length for first subbands and a second cyclic prefix length for second subbands, allowing adaptation to different communication scenarios and TRP configurations to maintain reliability while achieving high throughput
Solution Approach 2:
The patent segments the communication system into multiple subbands with different cyclic prefix lengths. By dividing the frequency spectrum into first subbands and second subbands, each can be optimized independently - first subbands use one cyclic prefix length while second subbands use another, resolving the contradiction between coverage expansion and performance maintenance
2Reliability
If TRP groups are formed with multiple subbands, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by assigning different cyclic prefix lengths to different subbands based on their specific requirements. Instead of using a uniform cyclic prefix for all subbands, the system tailors the cyclic prefix length to local conditions - using a first cyclic prefix length for first subbands and a second cyclic prefix length for second subbands, thereby improving reliability without requiring complete system redesign
Data Source
AI summary
A method of a first transmission and reception point (TRP) may comprise: forming a TRP group including the first TRP and a second TRP; configuring at least one first subband in a first operating band of the first TRP by performing a role of a master TRP; generating at least one subband group including the at least one first subband; setting a transmission (TX) timing and reception (RX) timing for at least one constituent subband of the at least one subband group; and communicating with a terminal based on the set TX timing and RX timing by using the at least one constituent subband in cooperation with the second TRP.