Sidelink Relay Routing Options for Network Coverage
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently routing data from wireless communication devices to a network, particularly in scenarios where direct device-to-device communication is preferred or necessary, without relying on intermediary base stations.
Innovation Solution
Implementing sidelink relay routing options that allow wireless communication devices to select data routing paths based on policy control information, establishing protocol data unit (PDU) sessions with other devices or base stations for data relay and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct device-to-device communication is implemented, then data transmission efficiency is improved, but network coverage and reliability deteriorate
Solution Approach 1:
The patent introduces a relay device as an intermediary between the first wireless communication device and the network. The relay device receives data from the first device via sidelink and forwards it to the network, enabling extended coverage while maintaining efficient direct communication where available. This resolves the contradiction by providing a mediator that bridges direct D2D communication and network connectivity.
2Adaptability or versatility
If multiple routing options are provided, then adaptability and reliability are improved, but device complexity increases
Solution Approach 1:
The patent implements self-service through autonomous routing selection where the first wireless communication device independently evaluates multiple routing options (direct network access vs. relay via second device) and selects the optimal path based on current network conditions. The device autonomously manages routing decisions without requiring complex centralized control, thereby improving adaptability while keeping device complexity manageable.
Solution Approach 2:
The routing selection is dynamic, allowing the device to switch between different routing options based on real-time network conditions, policy control information, and availability of relay devices. This dynamic adaptation enables the system to respond to changing conditions without requiring permanently complex routing infrastructure.
3Reliability
If relay communication is established, then network coverage is improved, but transmission latency increases
Solution Approach 1:
The system dynamically selects between direct network access and relay communication based on real-time conditions. When direct access is available and optimal, it is used to minimize latency. When coverage requires relay communication, the system switches to relay mode. This dynamic switching resolves the contradiction by optimizing for low latency when possible while ensuring coverage when necessary.
Solution Approach 2:
The system performs preliminary evaluation of routing options and establishes optimal routes in advance when possible. By pre-assessing available relay devices and network conditions, the system can prepare routing paths before data transmission begins, reducing the actual transmission latency even when relay communication is required.
Data Source
AI summary
In one aspect, a remote device generates data for transmission to a network based on an application, selects one of a set of data routing options for routing the data to the network based on policy control information; each of the set of data routing options includes routing the data via a relay device; and transmits the data to the relay device for routing the data via the selected data routing option. In another aspect, a relay establishes a protocol data unit (PDU) session with a network for relaying data received from a remote device based on policy control information, receives data from the remote device, and transmits the data to a base station coupled to the network via the PDU session. Another aspect relates to the base station operation with respect to the above aspects.