5G Cooperative Data Transmission via Beam Switching and Default QCL
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Solution Overview
Problem
There is a need for a data transmission and reception scheme in wireless communication systems, particularly in 5G networks, to enhance network cooperative communication and improve communication reliability for various service types such as eMBB, mMTC, and URLLC.
Innovation Solution
A method and apparatus for determining default quasi co-located (QCL) in a wireless communication system, involving a base station and terminal, to manage beam switching and data transmission through control channels based on beam switching-related information and time offsets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple data transmission schemes are implemented to enhance communication reliability, then the reliability of data transmission is improved, but the complexity of the transmission system increases
Solution Approach 1:
The patent segments the data transmission process by dividing multiple data into separate transport blocks and assigning different redundancy versions to each block. This segmentation allows the system to achieve high reliability through diverse transmission attempts while maintaining manageable complexity by processing each segment independently through standard channel coding procedures.
Solution Approach 2:
The patent changes the redundancy version parameter across different transport blocks to achieve diversity in transmission. By varying this parameter, the system improves communication reliability without requiring complex system architecture changes, as each transport block can be processed using standard channel coding with different redundancy parameters.
2Productivity
If beam switching-related information and time offsets are used to manage beam switching, then the efficiency of data transmission is improved, but the complexity of beam management increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring beam switching-related information and time offset parameters before actual data transmission. This allows the terminal to proactively prepare for beam switching events, improving transmission efficiency by reducing latency while managing complexity through advance parameter setup rather than real-time complex calculations.
Solution Approach 2:
The terminal uses the configured time offset information to autonomously determine when to switch beams without requiring continuous network control. This self-service approach improves transmission efficiency by enabling fast autonomous beam switching while reducing beam management complexity by transferring decision-making from the network to the terminal.
3Measurement precision
If default QCL information is determined based on time offsets, then the accuracy of quasi co-location determination is improved, but the complexity of QCL management increases
Solution Approach 1:
The patent improves QCL determination accuracy by using time offset parameters to differentiate between QCL relationships. By changing and utilizing this time parameter, the system can accurately determine quasi co-location relationships while maintaining simple management procedures, as the time offset provides a clear, quantifiable criterion for QCL determination without requiring complex measurement procedures.
Data Source
AI summary
The disclosure relates to a communication technique for combining, with IoT technology, a 5th generation (5G) or pre-5G communication system to support a higher data transfer rate than a 4th generation (4G) communication system such as Long Term Evolution (LTE), and a system thereof. The disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety related services, etc.) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present invention, a method and apparatus for transmitting and receiving multiple data in a wireless cooperative communication system may be provided. In addition, a method for a terminal in the communication system of the present invention is characterized by comprising the steps of: sending UE capability information including beam switching-related information to a base station; receiving configuration information including information related to a control channel from the base station; receiving at least one of first control information or second control information from the base station on the basis of the information related to the control channel; identifying whether a first time offset between a first control channel and a first data channel corresponding to the first control information, and a second time offset between a second control channel and a second data channel corresponding to the second control information are smaller than the beam switching-related information; and receiving data over the first data channel or the second data channel by using default quasi co-located (QCL) information when the first time offset and the second time offset are smaller than the beam switching-related information.