Semi-Persistent Scheduling for Relay Communication
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing semi-persistent scheduling for relay communication in sidelink networks, particularly in extending base station coverage and improving transmission reliability, especially in scenarios with link blockages or fading.
Innovation Solution
The implementation of semi-persistent scheduling (SPS) designs for relay communication, where SPS information including periodic transmit occasions is configured and transmitted to relay devices, allowing for efficient packet relay between source and destination devices through relay sidelink tunnels, utilizing relaying types like decode and forward, amplify and forward, and compress and forward.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-persistent scheduling is implemented for relay communication, then transmission reliability is improved, but scheduling complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring semi-persistent scheduling parameters including periodicity, time resources, and frequency resources for relay communication before actual data transmission occurs. This allows the system to establish reliable transmission patterns in advance, reducing the need for complex real-time scheduling decisions while maintaining high transmission reliability through predetermined resource allocation.
2Productivity
If periodic transmit occasions are configured for SPS, then resource allocation efficiency is improved, but feedback overhead increases
Solution Approach 1:
The patent implements feedback mechanisms within the semi-persistent scheduling framework to monitor transmission quality and relay performance. Feedback information is collected at periodic intervals and used to adjust scheduling parameters, enabling the system to maintain resource allocation efficiency while managing feedback overhead through structured feedback occasions that align with the periodic transmission pattern.
3Reliability
If relay devices are used to extend coverage, then network reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing relay devices that can perform multiple functions including signal relay, scheduling execution, and feedback processing within a unified architecture. This multi-functional approach allows relay devices to extend network coverage and improve reliability without requiring separate specialized components for each function, thereby managing device complexity while achieving enhanced network reliability.
Data Source
AI summary
Aspects relate to semi-persistent scheduling (SPS) designs for relay communication in sidelink networks. A scheduling entity, such as a base station and/or sidelink device, may configure an SPS configuration for relaying a packet from a source device to a destination device (e.g., the base station or destination sidelink device) via at least one relay device in a relay sidelink tunnel. SPS information associated with the SPS configuration may be provided to the source device and relay device(s). The SPS information may include, for example, periodic transmit occasions for the source device and the relay device(s). The periodic transmit occasions may include periodic uplink occasions and/or periodic sidelink occasions for groupcast and/or unicast relay transmission. Periodic feedback occasions may further be configured for providing feedback information (e.g., an acknowledgement or negative acknowledgement).