Acknowledgment Frame Transmission via Time-Frequency Multiplexing
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Solution Overview
Problem
In wireless local area networks, the asymmetrical antenna configuration in MIMO technology limits system throughput and degree of freedom, leading to increased ACK transmission time, channel resource wastage, and higher packet error rates when communicating with multiple receive ends.
Innovation Solution
A communication method that sends indication information with timeslot and frequency band indication to user equipment, allowing multiple user equipment to send acknowledgment frames simultaneously, thereby reducing transmission time and conserving channel resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple user equipment send acknowledgment frames sequentially, then channel resource conflict is avoided, but transmission time increases and channel resources are wasted
Solution Approach 1:
The patent introduces frequency band dimension to resolve the time dimension conflict. Multiple user equipment send acknowledgment frames simultaneously in the same timeslot but on different frequency bands, transforming a one-dimensional time sequence into a two-dimensional time-frequency resource allocation scheme. This eliminates sequential waiting time while avoiding channel conflicts through frequency separation.
2Loss of time
If multiple user equipment send acknowledgment frames simultaneously in the same timeslot, then transmission time is reduced, but channel resource conflict occurs without frequency band differentiation
Solution Approach 1:
The patent resolves the channel conflict by adding frequency band as a new dimension for resource allocation. When multiple user equipment need to send acknowledgments in the same timeslot, the system assigns them to different frequency bands, enabling simultaneous transmission without interference. This transforms a conflicting one-dimensional time resource into a conflict-free two-dimensional time-frequency resource structure.
3Device complexity
If asymmetrical antenna configuration is used in MIMO, then device complexity is reduced, but system throughput and degree of freedom are limited
Solution Approach 1:
The patent changes the resource allocation parameters from traditional time-sequential to time-frequency parallel allocation. By introducing frequency band indication information and allowing simultaneous acknowledgments on different frequency bands, the system effectively increases the degree of freedom without changing the physical antenna configuration. This parameter change enables the system to achieve higher throughput with the same asymmetrical antenna setup.
Data Source
AI summary
Embodiments of the present invention disclose a communication method: sending indication information to two or more user equipments, where the indication information includes timeslot indication information and frequency band indication information of the two or more user equipments, at least two user equipments in the two or more user equipments have same timeslot indication information, and the user equipments that have the same timeslot indication information have different frequency band indication information; and obtaining an acknowledgment frame sent by one or more user equipments of the two or more user equipments in a timeslot indicated by respective timeslot indication information and by using a frequency band indicated by respective frequency band indication information. The present invention is used for acknowledgment frame sending.