NR Sidelink Relay for Small Data Transmission
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Solution Overview
Problem
Current mobile and wireless telecommunication systems, such as 5G NR, face inefficiencies in small data transmissions (SDT) due to unnecessary power consumption and signaling overhead when transitioning between RRC inactive and connected states for small data transfers, particularly in scenarios like instant messaging and IoT applications.
Innovation Solution
Implementing an apparatus and method that determines conditions for using SDT via relay user equipment, allowing for efficient transmission and reception of small data transmissions by assessing support, payload size, and link quality, and optimizing signaling through relay-assisted SDT to reduce the number of signaling messages and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system transitions between RRC inactive and connected states for small data transfers, then data transmission capability is improved, but power consumption and signaling overhead increase
Solution Approach 1:
The patent introduces a relay node as an intermediary entity that receives small data transmissions from remote UEs in RRC inactive state and forwards them to the network. This mediator enables data transmission without requiring the remote UE to transition to connected state, thus reducing power consumption while maintaining transmission capability. The relay node acts as a bridge between the inactive UE and the network infrastructure.
2Productivity
If the system transitions between RRC inactive and connected states for small data transfers, then data transmission capability is improved, but signaling overhead increases
Solution Approach 1:
The relay node serves as an intermediary that consolidates signaling operations. Instead of each remote UE performing individual state transitions and signaling exchanges with the network, the relay node performs these operations on behalf of multiple remote UEs, significantly reducing the overall signaling overhead in the system.
Solution Approach 2:
The patent merges multiple small data transmissions from different remote UEs through the relay node. By combining these transmissions and forwarding them collectively to the network, the system reduces the number of separate signaling messages that would otherwise be required if each UE transmitted individually from connected state.
3Use of energy by moving object
If relay user equipment is used for small data transmission, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The relay node is designed with multi-functionality, serving both as a regular network device and as a relay for remote UEs. This universal design allows the same infrastructure to handle both direct communications and relayed small data transmissions, minimizing the need for additional specialized components and reducing overall system complexity.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for new radio (NR) sidelink relay of small data transmissions (SDT) are provided. One method may include determining whether conditions to use SDT via at least one relay user equipment are met. When it is determined that the conditions to use the SDT are met, the method may include transmitting a SDT relaying request comprising a SDT payload to the at least one relay user equipment. The method may also include receiving a SDT response, from the at least one relay user equipment, based on how the SDT relaying request is transmitted.