Multi-Hop Relay Authorization for Proximity Communication
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Solution Overview
Problem
Existing communication systems lack the capability for multi-hop relay communication through multiple relay UEs, limiting connectivity in scenarios where direct or single-hop relay is not feasible.
Innovation Solution
A proximity communication policy is introduced that includes a Relay Service Code (RSC) and multi-hop relay authorization information, enabling terminal devices to authorize and establish connections through multiple relay UEs using discovery methods Mode A and Mode B, allowing multi-hop relay communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If single relay UE is used for relay communication, then the system complexity is low, but the connectivity coverage and flexibility are limited
Solution Approach 1:
The patent segments the relay communication function into discoverable units by introducing hop count parameters (HopCount in discovery messages, MaxHopCount in authorization information) that divide the multi-hop relay process into manageable hops. Each relay UE can independently evaluate and process each hop based on these segmented parameters, enabling scalable multi-hop support without overwhelming system complexity.
Solution Approach 2:
The patent introduces an intermediary authorization mechanism where the network device provides proximity communication policy information containing multi-hop relay authorization information to relay UEs. This intermediary authorization layer mediates between the need for multi-hop connectivity and system complexity by providing pre-configured authorization rules that relay UEs can automatically evaluate, reducing the need for complex real-time negotiation protocols.
2Adaptability or versatility
If multi-hop relay authorization is implemented, then the connectivity flexibility is improved, but the authorization management complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure and distribute proximity communication policy information containing multi-hop relay authorization information to relay UEs before actual relay operations. This pre-authorization approach allows relay UEs to automatically evaluate authorization based on pre-set rules (such as RSC matching and hop count limits) without requiring complex real-time authorization negotiations, thereby improving flexibility while managing complexity through advance preparation.
Solution Approach 2:
The patent enables self-service by designing the authorization mechanism where relay UEs autonomously evaluate whether to accept relay tasks based on received proximity communication policy information and their own capabilities. The relay UE independently determines authorization status by comparing RSC values and checking hop count constraints without needing continuous network intervention, allowing flexible multi-hop relay establishment while reducing authorization management complexity through decentralized autonomous decision-making.
Data Source
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AI summary
The present application relates to a relay communication method, a terminal device, and a network device. The relay communication method comprises: a terminal device receives a near-field communication rule, the near-field communication rule comprising an RSC and multi-hop relay authorization information corresponding to the RSC. The present application can realize multi-hop relay communication by means of a plurality of relay UEs.