Relay Wireless Communication Power Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in V2X scenarios, the limited transmit power of User Equipment (UE) and interference issues can result in inadequate communication range, failing to meet the requirements for traffic transmission, especially in scenarios like Relay networks and Device-to-Device (D2D) networks where UE has limited power and is subjected to interference.
Innovation Solution
A method is introduced where a first node receives signaling indicating location information and communication range, determining a second communication range by adjusting the transmit power based on the first communication range and location information, and transmitting a second signaling with reduced power when the second communication range exceeds a threshold, thereby optimizing the communication range and meeting traffic transmission requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If UE transmits radio signal with maximum power to satisfy communication range requirements, then communication range is improved, but power consumption increases and interference to base station occurs
Solution Approach 1:
The patent introduces a relay node as an intermediary to forward signals between UEs. Instead of UE directly transmitting at maximum power to reach distant targets, the signal is transmitted to a relay node which then forwards it, thereby extending communication range without requiring UE to consume excessive power or cause interference to base stations.
Solution Approach 2:
The patent applies different transmit power levels locally - UE transmits at appropriate power to reach relay nodes, and relay nodes transmit at appropriate power to reach target UEs. This localized power management ensures each transmission uses only the necessary power, avoiding the need for any single UE to transmit at maximum power continuously, thus reducing overall power consumption and interference.
2Area of stationary object
If UE increases transmit power to meet traffic transmission requirements, then communication range is expanded, but interference to base station increases
Solution Approach 1:
The relay node serves as a mediator that receives signals from UEs and forwards them to base stations or other UEs. This intermediary approach allows coverage area to be expanded through coordinated transmissions at moderate power levels, rather than requiring any single UE to transmit at high power that would cause interference to the base station.
3Adaptability or versatility
If IP layer forwarding is used for data forwarding between UE and eNB, then relay functionality is achieved, but IP overhead increases
Solution Approach 1:
The patent changes the operational parameters of the relay node to operate at layer 2 (data link layer) instead of layer 3 (network layer/IP layer). This parameter change in the protocol layer eliminates the need for IP header processing and routing decisions at the relay node, thereby achieving relay functionality while significantly reducing IP overhead associated with packet forwarding.
Data Source
AI summary
The present disclosure provides a method and a device for Relay wireless communications. A first node receives a first signaling, and the first signaling indicates first location information and a first communication range; determines a second communication range according to the first location information and the first communication range; and when the second communication range is greater than a first threshold, transmits a second signaling, and the second signaling indicates second location information and the second communication range; wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than 0, receives first information, and the first information indicates the second location information; determines a first distance according to the first location information and the second location information. In case of limited transmit power, the present disclosure can expand communication range through forwarding by the first node.