PC5 RLC Channel Mapping for U2U Relay Bearer Configuration
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Solution Overview
Problem
The challenge in existing technologies is configuring an effective mapping relationship between a bearer identifier and an egress PC5 RLC channel in U2U relay scenarios, where direct communication between terminals is facilitated through a relay terminal, which is not adequately addressed.
Innovation Solution
A method and apparatus for configuring a mapping relationship between a bearer identifier and an egress PC5 RLC channel, involving various entities like terminals, network devices, and relay terminals, through the acquisition and determination of configuration information to establish the necessary mappings, and the exchange of configuration information to facilitate communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a relay terminal is introduced to enable direct communication between terminals, then communication capability is improved, but system complexity increases
Solution Approach 1:
The patent segments the communication system into distinct functional entities: relay terminals, remote terminals, and network devices. Each entity has specific responsibilities for establishing and maintaining mapping relationships, which divides the complex relay communication problem into manageable parts and reduces overall system complexity.
Solution Approach 2:
The patent introduces configuration information as an intermediary mechanism that mediates between the relay terminal and remote terminals. This configuration information carries the mapping relationships between bearer identifiers and egress PC5 RLC channels, enabling indirect configuration and reducing direct communication complexity between multiple terminals.
2Reliability
If mapping relationship configuration is implemented in U2U relay scenarios, then communication reliability is improved, but configuration complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring the mapping relationships between bearer identifiers and egress PC5 RLC channels before actual data transmission occurs. The configuration information is established in advance through signaling from network devices or relay terminals, ensuring that the mapping relationships are ready and verified before communication begins, thereby improving reliability without adding runtime complexity.
3Manufacturing precision
If configuration information is sent via signaling, then mapping accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by sending configuration information selectively to specific terminals that need it. Rather than broadcasting to all terminals, the configuration information is targeted to relay terminals and remote terminals involved in specific U2U relay scenarios. This ensures accurate mapping configuration for affected terminals while minimizing unnecessary signaling overhead to other terminals.
Data Source
AI summary
A method for configuring a mapping relationship between a bearer identifier and an egress PC5 radio link control (PC5 RLC) channel is performed by a first terminal. The method includes: acquiring first configuration information; and determining a first mapping relationship according to the first configuration information, wherein the first mapping relationship is a mapping relationship among an identifier of a second terminal, the bearer identifier and the egress PC5 RLC channel.