Relay UE Resource Request Reporting for Remote UE Power Reduction
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Solution Overview
Problem
In device-to-device (D2D) communication, user equipment (UE) connected through a relay function experiences high power consumption when sending resource request information to a base station due to the need for uplink synchronization and resource assignment based on base station scheduling.
Innovation Solution
The remote UE reports resource request information to the base station through the relay UE, using configured resource pools and signaling mechanisms to minimize direct communication with the base station, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the remote UE directly sends resource request information to the base station, then the resource request can be reported in a timely manner, but the power consumption of the remote UE increases significantly
Solution Approach 1:
The relay UE acts as an intermediary between the remote UE and the base station. The remote UE sends resource request information to the relay UE, which then forwards it to the base station. This allows the remote UE to report resource requests without directly communicating with the base station, significantly reducing its power consumption while maintaining timely resource allocation through the relay path.
2Reliability
If the remote UE maintains uplink synchronization with the base station to send resource requests, then resource allocation can be achieved, but the complexity of synchronization procedures increases
Solution Approach 1:
The relay UE serves as a synchronization intermediary. Instead of the remote UE directly maintaining uplink synchronization with the base station through complex procedures, the relay UE handles the synchronization functions. The remote UE communicates with the relay UE, which manages the uplink synchronization state and coordinates resource allocation with the base station, thereby reducing the complexity of synchronization procedures for the remote UE while maintaining reliable resource allocation.
3Ease of operation
If the remote UE requests uplink grant through random access procedure, then uplink resources can be obtained, but the power consumption and access delay increase
Solution Approach 1:
The relay UE acts as an intermediary for uplink resource acquisition. Instead of the remote UE performing power-consuming random access procedures directly with the base station, the remote UE requests uplink resources through the relay UE. The relay UE manages the random access procedure with the base station and allocates uplink resources to the remote UE, thereby reducing the power consumption and access delay for the remote UE while maintaining ease of uplink resource acquisition.
Data Source
AI summary
A resource request method and system, and a device are provided, and relate to the field of communications technologies. The method may include: triggering, by remote UE, a buffer status report BSR, and sending the BSR to relay UE, where the BSR is used to provide a base station with a size of available to-be-transmitted data in a buffer of the remote UE.