Multicast Relay Devices for Direct, Low-Latency Terminal Transmission
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Solution Overview
Problem
Existing communication devices face challenges in improving communication quality and reducing latency and power consumption when transmitting data to multiple terminals, particularly in multi-antenna communication systems.
Innovation Solution
A communication device with a transfer unit that determines whether data received from a first terminal needs to be multicast and directly transmits it to a second terminal without passing through another communication device, and includes modes for intermittent and relay transmission to optimize latency and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data is transmitted through another communication device for multicast, then routing flexibility is improved, but latency increases
Solution Approach 1:
The patent segments the multicast transmission path into two types: relay mode (through communication devices) and direct mode (direct terminal-to-terminal). This segmentation allows the system to choose the appropriate path based on requirements, resolving the contradiction between routing flexibility and latency by providing both options.
Solution Approach 2:
The patent implements dynamic path selection where the transmission mode (relay or direct) can be switched based on application requirements, terminal capabilities, and network conditions. This dynamic adaptability allows the system to optimize for either routing flexibility or latency depending on the situation.
2Ease of operation
If data is relayed through communication devices, then transmission control is improved, but power consumption increases
Solution Approach 1:
The patent segments power consumption into two modes: relay mode (higher control, higher consumption) and direct mode (lower control, lower consumption). This allows terminals to select direct mode for power-sensitive applications while maintaining the option to use relay mode when enhanced control is needed.
Solution Approach 2:
The system dynamically adjusts the transmission mode based on power requirements and control needs. Terminals can switch between relay and direct modes, enabling power-saving operation when possible while maintaining transmission control capability when required.
3Loss of time
If direct transmission between terminals is implemented, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent makes communication devices universal by enabling them to perform both relay function and direct transmission function. This multi-functionality reduces the need for separate dedicated direct-transmission hardware, thereby limiting the increase in device complexity while still achieving lower latency.
Solution Approach 2:
The patent enables terminals to self-determine whether to use direct or relay mode based on their own requirements and capabilities. This self-service approach distributes the decision-making complexity to individual terminals rather than requiring complex centralized control, thereby limiting overall system complexity.
Data Source
AI summary
A controller, which is a communication device, includes: a transfer unit including a function of transferring data received from a first terminal to another communication device via wireless communication; and a determination unit configured to determine whether first information is included in the data received by the transfer unit, the first information indicating that the data is to be multicast. The transfer unit is further configured to multicast the data to a second terminal when the determination unit determines that the first information is included in the data, the second terminal and the first terminal being different terminals.