Distributed Antenna Timing Alignment via Base Station Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in V2X scenarios, communication performance degradation occurs due to timing misalignment among distributed antennas, which affects the reliability and latency of sidelink communications.
Innovation Solution
A method is introduced where user equipment (UE) transmits and receives signals to and from a base station (BS) to obtain timing offsets, using time gap information to align the timings of distributed antennas, thereby minimizing communication performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distributed antennas are used to increase communication capacity, then communication capacity is improved, but timing misalignment occurs causing performance degradation
Solution Approach 1:
The base station measures timing offsets of signals received from distributed antennas and feeds back timing gap information to the user equipment. The user equipment then adjusts transmission timings based on this feedback, creating a closed-loop control system that resolves timing misalignment while maintaining the benefits of distributed antenna configuration
Solution Approach 2:
The system dynamically changes transmission timing parameters based on measured timing offsets. By adjusting the timing gap parameter according to feedback from the base station, the system optimizes synchronization across distributed antennas, resolving the contradiction between maintaining spatial diversity and achieving timing alignment
2Area of stationary object
If distributed antennas are deployed to support V2X communication, then communication coverage is improved, but timing synchronization difficulty increases
Solution Approach 1:
The base station acts as an intermediary that centralizes timing measurement and calculation functions. Instead of requiring complex peer-to-peer synchronization between distributed antennas, the base station measures timing offsets and provides centralized timing gap information, simplifying the synchronization mechanism while maintaining wide coverage
3Device complexity
If timing alignment is performed without feedback mechanism, then system complexity is reduced, but timing accuracy deteriorates
Solution Approach 1:
A feedback mechanism is implemented where the base station measures actual timing offsets of signals from distributed antennas and transmits timing gap information back to the user equipment. This feedback loop enables precise timing alignment by using actual measured values rather than theoretical calculations, achieving high timing accuracy without excessive system complexity
Data Source
AI summary
Disclosed are a method for transmitting and receiving, by user equipment, signals by using a plurality of distributed antennas in a wireless communication system supporting sidelink according to various embodiments, and an apparatus therefor. Disclosed are the method and the apparatus therefor, the method comprising the steps of: transmitting a first signal by using the plurality of distributed antennas; and receiving a second signal from a base station by using the plurality of distributed antennas, wherein the second signal includes time gap information for the alignment of timings between the plurality of distributed antennas, and the timings of the plurality of distributed antennas are aligned on the basis of the time gap information.