Relay UE Traffic Distribution in Wireless Communication
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face challenges in efficiently managing traffic distribution across cells, leading to inefficient resource use and interference, particularly when one cell has high data traffic while another has low traffic, resulting in reduced resource efficiency and increased interference.
Innovation Solution
A network cooperative communication method is introduced, where a relay UE in one cell receives and forwards downlink data from another cell through a backhaul link, using precoding and channel state information to minimize interference and optimize resource use, allowing for efficient traffic distribution and offloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traffic is concentrated in one cell, then service availability increases for that cell, but resource efficiency decreases and interference increases
Solution Approach 1:
The patent segments traffic distribution across multiple cells using relay UEs. Instead of concentrating all traffic in one cell, the system divides traffic load by enabling relay UEs to receive data from a source cell and forward it to destination UEs in a target cell, thereby distributing traffic负荷 across multiple cells and improving overall resource efficiency while maintaining service availability
Solution Approach 2:
The patent introduces relay UEs as intermediary nodes between source and target cells. These relay UEs act as mediators that receive downlink data from the source cell via backhaul link and forward it to destination UEs in the target cell, enabling efficient traffic distribution and reducing interference between cells
2Reliability
If traffic is concentrated in one cell, then service availability increases for that cell, but interference increases
Solution Approach 1:
The patent segments traffic distribution across multiple cells using relay UEs. Instead of concentrating all traffic in one cell, the system divides traffic load by enabling relay UEs to receive data from a source cell and forward it to destination UEs in a target cell, thereby distributing traffic负荷 across multiple cells and improving overall resource efficiency while maintaining service availability
Solution Approach 2:
The patent introduces relay UEs as intermediary nodes between source and target cells. These relay UEs act as mediators that receive downlink data from the source cell via backhaul link and forward it to destination UEs in the target cell, enabling efficient traffic distribution and reducing interference between cells
3Loss of energy
If relay UE forwards data from another cell, then resource efficiency improves, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where relay UEs autonomously perform traffic distribution functions. The relay UEs independently receive downlink data from source cells, determine forwarding destinations, and transmit data to target cells without requiring complex centralized control, thereby reducing overall system complexity while improving resource efficiency
Solution Approach 2:
The patent enables relay UEs to perform multiple functions: receiving downlink data from source cells, buffering data, determining forwarding destinations, and transmitting to target cells. This multi-functionality reduces the need for separate dedicated infrastructure components, simplifying the overall system architecture while improving resource utilization
Data Source
AI summary
The present application discloses a method of transmitting, by a relay terminal of a second cell, downlink data for a receiving cell of a first cell in a wireless communication system. Specifically, the method comprises the steps of: receiving downlink data for the receiving terminal of the first cell from the second cell; transmitting control information for the downlink data to the receiving terminal; and transmitting the downlink data to the receiving terminal on the basis of the control information, wherein the downlink data is delivered from the first cell to the second cell via a backhaul link. In particular, the control information is characterized by comprising: data grant which indicates a plurality of resource areas for communication between the relay terminal and the receiving terminal; and a request message for channel state information between the relay terminal and the receiving terminal.