Head Mounted Display Communication System Latency Reduction
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Solution Overview
Problem
Current communication systems experience high latency during handovers in interactive video streaming applications, particularly in edge computing environments like cloud extended reality, leading to poor user experiences due to delays in video streaming.
Innovation Solution
A communication system that creates a signal quality distribution map based on historical measurement reports from access points, allowing the base station to predict and switch user equipment to optimal transmission modes proactively, reducing latency by managing signal quality ranges and handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handover decision procedures are used based on signal quality measurement, then communication reliability is maintained, but latency increases significantly for interactive video streaming applications
Solution Approach 1:
The base station creates a signal quality distribution map in advance by collecting historical measurement reports from multiple access points. This pre-computed map allows the base station to predict signal quality at future user equipment locations without waiting for actual signal degradation, enabling proactive transmission mode switching that reduces handover latency while maintaining communication reliability
Solution Approach 2:
The system prepares multiple transmission modes in advance corresponding to different signal quality ranges in the distribution map. When predicting that user equipment will enter a new signal quality range, the base station has the appropriate transmission mode ready, cushioning against the latency that would otherwise occur during mode switching
2Reliability
If signal quality measurement and handover decisions are performed in real-time, then transmission reliability is ensured, but user experience deteriorates due to video streaming delay
Solution Approach 1:
The base station performs preliminary analysis by creating a signal quality distribution map that correlates geographical locations with signal quality ranges. This allows the system to predict future signal conditions and proactively switch transmission modes before actual signal degradation occurs, maintaining video streaming quality without sacrificing transmission reliability
Solution Approach 2:
The system dynamically switches transmission modes based on predicted user equipment location and corresponding signal quality ranges. Instead of static or reactive mode selection, the system adaptively adjusts transmission parameters in advance based on the dynamic movement patterns of user equipment, improving video streaming performance while ensuring reliable transmission
3Device complexity
If transmission mode switching is performed reactively based on current signal quality, then system complexity remains low, but latency increases due to delayed response
Solution Approach 1:
The base station pre-computes a signal quality distribution map by collecting historical measurement reports from multiple access points and organizing them by geographical location and signal quality range. This preliminary action eliminates the need for complex real-time signal analysis during handover, reducing system complexity while enabling low-latency proactive mode switching
Solution Approach 2:
The signal quality distribution map serves as an intermediary data structure that simplifies the handover decision process. Instead of directly analyzing complex signal measurements in real-time, the base station queries the pre-organized distribution map based on predicted user equipment location, reducing computational complexity while enabling fast mode switching
Data Source
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AI summary
The present disclosure provides a communication system and a head mounted display. The head mounted display is configured for: obtaining first geological information of the head mounted display at present based on a positioning technology; forwarding the first geological information to a base station through an access point; and in response to the head mounted display changing from the first geological information to second geological information, switching to a specific transmission mode according to a control signal from the base station.