Manifold Transmission Activation Indicator for Wireless Signal Reception
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Solution Overview
Problem
Next-generation wireless communication systems face challenges in transmitting highly reliable data within a short period of time, particularly in multi-cell environments where inter-cell interference is significant, and existing CoMP methods are limited in maximizing transmission sessions and diversity within a limited time.
Innovation Solution
The manifold transmission technique involves a UE receiving a manifold transmission activation indicator from multiple base stations, allowing it to collectively receive data through multiple paths without inter-cell cooperation, using two-level DCI and orthogonal sequences to enhance reliability and diversity, and transmitting ACK signals to all involved base stations to achieve macro diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CoMP operations are applied to reduce inter-cell interference, then communication reliability is improved, but the complexity of inter-cell cooperation increases
Solution Approach 1:
The patent segments the cooperative communication process into independent manifold transmission sessions, where each base station transmits independently without requiring complex inter-cell coordination. This segmentation allows reliability improvement through diversity while avoiding the complexity of traditional CoMP operations.
Solution Approach 2:
The manifold transmission activation indicator serves as an intermediary signal that enables coordinated transmission without requiring direct inter-cell cooperation. The indicator allows base stations to synchronize their transmissions indirectly, achieving CoMP-like reliability benefits while maintaining operational independence.
2Reliability
If multiple transmission paths are used to maximize diversity, then transmission reliability is improved, but the time required for coordination increases
Solution Approach 1:
The system performs preliminary action by pre-configuring manifold transmission parameters and activating them through the manifold transmission activation indicator. This allows multiple transmission paths to be established in advance without requiring real-time coordination during actual data transmission, thus reducing coordination time while maintaining reliability.
Solution Approach 2:
The manifold transmission activation indicator is transmitted periodically, allowing the system to establish multiple transmission paths at regular intervals. This periodic activation enables the system to maximize diversity through multiple paths while maintaining efficient timing without continuous coordination overhead.
3Reliability
If manifold transmission activation indicator is transmitted periodically, then transmission reliability is improved, but control signal overhead increases
Solution Approach 1:
The system applies partial action by transmitting the manifold transmission activation indicator periodically rather than continuously. This periodic transmission provides sufficient reliability for activation detection while minimizing control signal overhead, achieving the optimal balance between reliability improvement and overhead reduction.
Data Source
AI summary
A method and device for receiving a signal in a wireless communication system to which a multiplex transmission technique is applied are provided. The wireless communication system proposed herein suggests a method for increasing the receipt reliability of a terminal with respect to a multiplex transmission activation indicator indicating the start of multiplex transmission. Particularly, a terminal checks the receipt of a multiplex transmission activation indicator transmitted, from a first base station, for every predetermined subframe. If the terminal succeeds in receiving the multiplex transmission activation indicator, an ACK signal associated with the multiplex transmission activation indicator is transmitted to the first base station. Here, the multiplex transmission activation indicator indicates that the first base station and a second base station are capable of transmitting the same data for a predetermined time together.