Control Channel Reliability via Multi-Link Diversity
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving high reliability and low latency, particularly in mission-critical applications like tele-surgery, where real-time feedback is essential and error rates and round trip times must be extremely low, which existing technologies struggle to meet due to limitations in transmission time intervals and control channel efficiency.
Innovation Solution
The implementation of a wireless communication system that utilizes a scheduling entity to manage time-frequency resources through thin control channels, allowing for dynamic multiplexing of low-latency data alongside high-latency data, and employs multi-link diversity and selection diversity to ensure reliable control channel transmission, enabling efficient re-allocation of resources and improved error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional transmission time intervals are used, then system compatibility is maintained, but latency cannot be reduced below a certain threshold
Solution Approach 1:
The patent segments the transmission time interval into multiple granular time units (e.g., mini-slots, sub-slots) that can be independently allocated. This allows the system to use shorter transmission intervals when low latency is required while maintaining compatibility with traditional longer intervals when not needed, thus resolving the contradiction between reducing latency and maintaining system compatibility.
2Reliability
If control channel resources are increased, then reliability of control information transmission is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent implements dynamic control channel resource allocation where the amount of resources dedicated to control channels varies based on current system conditions, traffic requirements, and reliability needs. During periods requiring high reliability (e.g., critical control information), more resources are allocated to control channels. During normal operation, resources are reduced to improve overall resource efficiency, thus resolving the contradiction between reliability and productivity.
3Reliability
If multiple physical links are used for control information transmission, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple physical links (e.g., different frequency carriers, spatial streams, or transmission paths) to transmit control information simultaneously or in parallel. By merging these links at the transmitter and coordinating them at the receiver, the system achieves improved reliability through diversity while managing complexity through unified resource management and coordinated processing across the combined links.
Data Source
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AI summary
One or more aspects of the present disclosure provide for the reliable transmission of control information utilizing a plurality of physical communication links or channels. In some aspects, multi-link diversity may be utilized, wherein control information is jointly encoded and transmitted across a plurality of physical links. In other aspects, selection diversity may be utilized, wherein control information is transmitted across one or more selected links based on a determination that the selected link or links have the best quality, and therefore reliability. Associated data information may be handled in the same way or in a different manner in various aspects of the disclosure.