5G Relay Terminal Routing Tables for Flexible PDU Forwarding
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Solution Overview
Problem
Existing relay solutions in 5G wireless systems are less flexible as they require complete configuration of the mapping relationship between remote terminals and radio bearers by a base station, limiting the flexibility of communication between remote terminals and network devices.
Innovation Solution
A relay method and apparatus that includes a relay protocol stack between the PDCP layer and layer 2 protocol stack, featuring a relay receiver and sender entity to process and forward relay PDUs, and a method for generating a routing table based on terminal identifiers, enabling flexible communication without complete base station configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station completely configures the mapping relationship between remote terminals and radio bearers, then the communication reliability is improved, but the adaptability deteriorates
Solution Approach 1:
The patent implements dynamic routing by allowing relay terminals to autonomously determine next hops based on routing tables rather than static base station configuration. The relay terminal dynamically selects the appropriate radio bearer and next node based on the destination identifier and routing table entries, enabling flexible adaptation to different network conditions and topologies while maintaining reliable communication.
Solution Approach 2:
The relay terminal performs self-service by autonomously managing its own routing decisions. The relay terminal maintains its own routing table, independently determines next hops based on destination identifiers, and selects appropriate radio bearers without requiring complete base station configuration. This self-service capability enables the relay terminal to adapt to various communication scenarios while ensuring reliable data transmission.
2Stability of the object's composition
If the base station configures the mapping relationship, then the communication stability is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the routing decision-making capability from the base station and assigns it to the relay terminal. The relay terminal maintains its own routing table and independently determines next hops based on destination identifiers, eliminating the need for complex base station configuration while maintaining stable communication. This extraction reduces the complexity of device operation and configuration.
Solution Approach 2:
The patent changes the parameter of routing control from base station-centric to relay terminal-centric. Instead of the base station configuring mapping relationships, the relay terminal uses destination identifiers and routing tables to dynamically determine next hops. This parameter change simplifies the configuration process while maintaining communication stability through reliable routing decisions.
3Reliability
If the relay terminal uses complete mapping configuration, then the communication reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The patent implements dynamic routing operations where the relay terminal autonomously determines next hops based on routing tables and destination identifiers. This dynamic operation mode allows the relay terminal to adapt to different communication scenarios without requiring complex base station configuration, improving ease of operation while maintaining reliable communication through consistent routing decisions.
Solution Approach 2:
The relay terminal performs self-service by autonomously managing routing decisions and selecting next hops based on its routing table. This self-service capability eliminates the need for complex base station configuration and mapping relationships, significantly improving ease of operation while ensuring reliable communication through intelligent autonomous routing.
Data Source
AI summary
A relay terminal includes a relay protocol stack, the relay protocol stack being located between a packet data convergence protocol (PDCP) layer and a layer 2 protocol stack, or the relay protocol stack being a media access control (MAC) layer protocol stack. The relay method includes: a relay receiving entity receiving a relay protocol data unit (PDU) sent by a previous hop node, and transmitting the relay PDU to a relay sending entity; and the relay sending entity sending the relay PDU to a next hop node.