Relay UE Uplink Feedback to Prevent Buffer Overflow
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Solution Overview
Problem
The uplink communication band between a relay user equipment and a base station may be insufficient, leading to buffer overflow and communication disconnection in a mobile communication system.
Innovation Solution
The relay user equipment transmits restriction, desire, or request information to manage the data transmission amount of the remote user equipment, either directly to the remote user equipment or to the network node, to prevent buffer overflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay user equipment transmits data from the remote user equipment to the base station on the uplink, then communication relay function is achieved, but uplink buffer overflow occurs when communication band is insufficient
Solution Approach 1:
The relay user equipment transmits restriction information to the remote user equipment based on the status of the uplink communication band, creating a feedback mechanism that dynamically adjusts data transmission amounts to prevent buffer overflow while maintaining communication relay functionality
Solution Approach 2:
The system dynamically adjusts the data transmission amount by transmitting restriction information that changes based on real-time uplink band conditions, allowing the communication system to adapt to varying network conditions and prevent buffer overflow
2Reliability
If restriction information is transmitted to manage data transmission amount, then buffer overflow is prevented, but communication control complexity increases
Solution Approach 1:
The relay user equipment autonomously manages its own buffer status and transmits restriction information based on its internal state, eliminating the need for complex external control mechanisms and reducing overall system complexity while preventing buffer overflow
Data Source
AI summary
A communication control method comprises receiving, by a relay user equipment, data transmitted from a remote user equipment on a sidelink; transmitting, from the relay user equipment to a network node and on an uplink, the data received from the remote user equipment; and transmitting, from the relay user equipment to the remote user equipment, restriction information configured to restrict an amount of data to be transmitted by the remote user equipment. A relay user equipment comprises a receiver configured to receive data transmitted from a remote user equipment on a sidelink, and a transmitter configured to transmit to a network node and on an uplink, the data received from the remote user equipment. The transmitter is configured to transmit to the remote user equipment, restriction information configured to restrict an amount of data to be transmitted by the remote user equipment.