UE Cooperation Relay Adaptation Protocol for Throughput
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Solution Overview
Problem
Current wireless communication networks face challenges in enhancing data throughput and coverage, particularly in scenarios requiring high data rates and low latency, such as public safety and industrial applications, due to unstable UE relaying functionality and channel conditions.
Innovation Solution
The implementation of UE cooperation with relay-based techniques that involve multiple relay UEs, multi-path connections, and adaptation protocols to process UC bearer traffic, including split or duplicated PDCP bearers, to enhance data rate and coverage by relaying traffic through multiple hops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay-based UE cooperation techniques are implemented with multiple relay UEs and multi-path connections, then data throughput and coverage reliability are improved, but device complexity and protocol processing overhead increase
Solution Approach 1:
The patent segments the protocol stack into distinct layers (PDCP, RLC, MAC, PHY) with specific adaptation protocols inserted at strategic points. Each layer handles specific processing tasks independently, allowing complex relay operations to be divided into manageable segments that can be processed in parallel across multiple relay UEs, thereby improving throughput while controlling complexity.
Solution Approach 2:
The patent introduces adaptation protocols as intermediary layers between standard protocol layers. These adaptation protocols act as mediators that manage the complexity of multi-path relay operations by providing standardized interfaces and processing rules, enabling seamless traffic forwarding through multiple relay UEs without overwhelming the core protocol stacks.
2Reliability
If adaptation protocols are used to process UC bearer traffic with split or duplicated PDCP bearers, then coverage and reliability are enhanced, but processing time and latency increase
Solution Approach 1:
The patent implements preliminary configuration and setup of adaptation protocols and multi-path connections before actual data transmission begins. Bearers are pre-established, routing paths are pre-determined, and adaptation rules are pre-configured, allowing data to flow through multiple relays with minimal real-time processing decisions, thus reducing latency while maintaining high reliability.
3Area of stationary object
If multiple relay UEs are deployed to improve coverage in out-of-coverage scenarios, then coverage area is extended, but system complexity and coordination overhead increase
Solution Approach 1:
The patent designs the adaptation protocol to be universally applicable across different relay scenarios (in-coverage, out-of-coverage, partial coverage). The same core adaptation mechanisms handle diverse situations including single-relay, multi-relay, and multi-path configurations, reducing the need for scenario-specific complexity while extending coverage area effectively.
Data Source
AI summary
Signaling to enable relay-based user equipment (UE) cooperation (UC) by a group of UEs, and a configuration including an adaptation protocol for processing of UC bearer traffic, are communicated in a wireless communication network. The UC bearer traffic includes a UC bearer and UC bearer attributes, and the UC bearer includes either a split bearer or a duplicated bearer indicated in the UC bearer attributes. In some embodiments, wireless network connectivity that is available for a relay link is determined, and the adaptation protocol is determined based on the determined connectivity. Signaling to enable configuration of the relay link in accordance with the connectivity and the adaptation protocol is communicated. A UE may receive signaling to configure the UE for such a relay link, and communicates traffic between a remote UE and the wireless communication network over the relay link.