Control Channel Repetition Parameter Alignment
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Solution Overview
Problem
In wireless communications, the uncertainty about which repetitions of a message are received by wireless devices can lead to misalignment between base stations and devices, affecting reliability and efficiency.
Innovation Solution
Determining and using parameters such as spatial relations, beam, precoder, and transmission power before message repetitions, and employing time offsets to align transmissions and receptions, thereby reducing latency and retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repetitions of a message are sent via a plurality of wireless resources, then reliability is improved, but misalignment between base station and wireless device occurs due to uncertainty about which repetitions are received
Solution Approach 1:
The patent applies preliminary action by determining parameters (spatial relation, beam, precoder, transmission power) for repetitions before the repetitions are transmitted. The base station determines these parameters based on prior communication with the wireless device, ensuring that the repetitions are prepared and configured in advance to maintain alignment and reliability.
2Reliability
If parameters for transmission are determined before repetitions, then alignment is improved, but complexity of determining and tracking parameters increases
Solution Approach 1:
The patent applies universality by using the determined parameters (spatial relation, beam, precoder, transmission power) for multiple purposes: they are used for the initial transmission and then reused for the repetitions. This multi-functional use of parameters reduces the need for separate parameter determination for each transmission, thereby reducing overall system complexity while maintaining alignment.
3Loss of time
If time offsets are used for repetitions, then latency is reduced, but precision in timing and synchronization becomes more difficult to maintain
Solution Approach 1:
The patent applies feedback by using time offsets in the determination of parameters for repetitions. The base station determines parameters based on feedback information about the timing relationships between initial transmission and repetitions. This feedback mechanism allows the system to maintain precise timing synchronization while utilizing time offsets to reduce latency, as the parameters are adjusted based on actual timing conditions.
Data Source
AI summary
Control channel repetition may be used in wireless communications. One or more parameters may be communicated and/or used for transmission/reception occurring prior to repeated messages. A wireless device and/or a base station may use the one or more parameters for transmission/reception scheduled by the repeated messages.