Cooperative Wireless Data Transmission Reliability
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Solution Overview
Problem
Current wireless communication systems face challenges in ensuring reliable data and control signal transmission in cooperative communication networks, particularly in achieving high communication reliability and efficient resource management across different service types like eMBB, mMTC, and URLLC.
Innovation Solution
The proposed method involves a terminal and a base station communicating through control information to identify whether an initial transmission signal or a retransmission signal is being transmitted from at least one Transmission Reception Point (TRP). Based on this information, the terminal receives the appropriate signal from the TRP, enhancing communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cooperative communication is used to improve reliability, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The data transmission is divided into multiple portions (first portion and second portion) that can be transmitted separately through different TRPs. This segmentation allows the system to achieve diversity gain and improve reliability without requiring complete retransmission, thereby managing system complexity effectively.
Solution Approach 2:
A first TRP acts as an intermediary to transmit control information to the terminal, while a second TRP transmits data portions. This intermediary control mechanism coordinates the cooperative communication between multiple TRPs, enabling reliable data transmission through coordinated multi-point transmission without excessive system complexity.
2Reliability
If multiple data portions are transmitted through multiple TRPs, then communication reliability is improved, but control overhead increases
Solution Approach 1:
Control information for scheduling multiple data portions is merged into a single downlink control information (DCI) message transmitted by the first TRP. This combining of control signals reduces the total control overhead compared to separate control messages for each TRP and data portion.
Solution Approach 2:
The control information structure is designed to be universal, capable of scheduling multiple data portions from multiple TRPs using a single DCI format. This multi-functional control mechanism reduces control overhead by avoiding the need for separate control messages for each transmission.
3Reliability
If retransmission signaling is implemented, then communication reliability is improved, but processing complexity at terminal increases
Solution Approach 1:
The terminal is pre-configured with information about multiple data portions and their corresponding TRPs through control information received in advance. This preliminary configuration allows the terminal to efficiently process retransmissions without complex real-time decision-making, reducing terminal processing complexity while maintaining reliability.
Solution Approach 2:
The system implements feedback mechanisms where the terminal reports reception status of data portions to the network. This feedback enables targeted retransmissions only for failed portions, improving reliability while keeping terminal processing complexity manageable through selective rather than comprehensive retransmission handling.
Data Source
AI summary
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method and an apparatus for transmitting and receiving one or more pieces of data between a transmission node and a user equipment (UE) to perform cooperative communication in a wireless communication system, thereby improving communication reliability, are provided.