RRC XR Establishment Cause for Low-Latency Network Resource Setup
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Solution Overview
Problem
Existing telecommunication networks fail to recognize the unique latency and throughput requirements of Extended Reality (XR) applications, leading to insufficient resource allocation and poor user experiences due to high latencies and low throughputs.
Innovation Solution
Introduce an XR establishment cause value in Radio Resource Control (RRC) connection requests to indicate that the connection is for an XR application, enabling the base station to allocate appropriate resources that meet the specific latency and throughput goals of XR applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing telecommunication networks use standard connection requests without XR identification, then network simplicity is maintained, but XR applications receive insufficient resource allocation resulting in high latency and low throughput
Solution Approach 1:
The patent modifies the establishment cause parameter in RRC connection requests by introducing a new XR establishment cause value. This parameter change enables base stations to identify XR applications and allocate prioritized resources accordingly, resolving the contradiction between maintaining network simplicity and improving XR resource allocation without requiring fundamental structural changes to the connection request mechanism
2Reliability
If base stations allocate standard resources to all connections, then network operation simplicity is maintained, but XR application performance deteriorates due to high latency and low throughput
Solution Approach 1:
The patent implements preliminary action by having the UE indicate XR application type in the initial RRC connection request before actual data transmission begins. This allows the base station to pre-allocate prioritized resources and configure appropriate QoS parameters in advance, ensuring XR performance requirements are met from the start without requiring complex real-time resource management decisions during data flow
3Ease of operation
If XR applications use standard telecommunication connections, then network compatibility is maintained, but user experience deteriorates due to motion sickness caused by high latency
Solution Approach 1:
The patent establishes a feedback mechanism where the UE provides XR establishment cause information to the base station during connection setup. This feedback enables the base station to adjust resource allocation and transmission parameters specifically for XR applications, creating a closed-loop system that optimizes latency and throughput based on actual XR performance requirements rather than using generic connection settings
Data Source
AI summary
A user equipment (UE) can connect to a base station of a telecommunication network by sending a Radio Resource Control (RRC) connection request to the base station. When the UE engages in a virtual reality (VR) application, augmented reality (AR) application, or any other Extended Reality (XR) application via the telecommunication network, the UE can indicate a XR establishment cause within an RRC connection request sent to a base station. The base station can determine, based on the XR establishment cause in the RRC connection request, that the UE will be engaging in an XR application, and can set up bearers and/or otherwise allocate resources for an RRC connection that are associated with latency goals, throughput goals, and/or other target goals associated with XR applications.