Communication Device Frequency Division for Multicast Acknowledgments
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently using resources for transmission acknowledgment of multicast frames, leading to resource wastage and difficulty in allocating resources to other communications until all terminals complete their acknowledgment.
Innovation Solution
A communication device and method that employs frequency division multiplexing for transmission acknowledgment, dynamically allocating center frequencies and bandwidths based on reception characteristics and congestion, reducing resource waste by optimizing resource allocation for multiple destinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission acknowledgment is performed chronologically for each terminal, then communication reliability is improved, but wireless communication resources cannot be allocated to other communications until all acknowledgments are completed
Solution Approach 1:
The patent transitions from chronological (time-based) acknowledgment to frequency-based acknowledgment by introducing multiple center frequencies. Multiple terminals transmit acknowledgment frames simultaneously on different frequencies, resolving the contradiction between maintaining reliability through individual acknowledgments and improving resource utilization by enabling parallel communications.
Solution Approach 2:
The patent segments the acknowledgment process by assigning different center frequencies to different terminals. This segmentation allows multiple acknowledgments to occur simultaneously without interference, improving both reliability (each terminal receives individual acknowledgment) and productivity (resources are not blocked sequentially).
2Reliability
If wireless communication resources are allocated to each terminal chronologically, then transmission acknowledgment reliability is improved, but resource waste occurs and other communications are delayed
Solution Approach 1:
By introducing frequency as an additional dimension for resource allocation, the patent enables parallel acknowledgment transmissions. Terminals are assigned different center frequencies, allowing simultaneous acknowledgments that reduce total time while maintaining individual reliability through dedicated frequency resources for each terminal.
Solution Approach 2:
The patent enables continuous utilization of wireless resources by allowing multiple terminals to transmit acknowledgments simultaneously on different frequencies. This eliminates idle time between sequential acknowledgments, ensuring continuous productive use of the communication channel while maintaining reliable individual acknowledgment delivery.
Data Source
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AI summary
[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources. [Solution] The communication device includes: a communication unit configured to perform communication of a frame. The communication unit transmits a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and receives the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information.