TDMA Repeater Frame Construction for Low-Power Communication
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Solution Overview
Problem
Existing radio communication systems face challenges in providing efficient communication in environments without pre-installed infrastructure, such as open spaces and long, narrow tunnels, due to high power requirements and inefficient use of bandwidth and time slots.
Innovation Solution
A TDMA-type radio communication system with repeaters that receive and forward packets from all time slots, using a controller to construct a single frame with different recipient identifiers for transmission in a single time slot, reducing the need for dedicated downlink channels and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional radio repeater systems are used to extend communication range in environments without infrastructure, then communication coverage is improved, but power consumption increases significantly
Solution Approach 1:
The patent combines uplink and downlink transmissions into a single bidirectional communication phase where multiple stations transmit simultaneously in one time slot, and all stations receive and process signals from all transmitters. This merging eliminates the need for separate downlink time slots and reduces the number of transmission phases, thereby reducing power consumption while maintaining communication coverage.
Solution Approach 2:
Each station in the system is equipped with both transmission and reception capabilities that operate simultaneously. Stations can function as both transmitters and receivers in the same time slot, and the receiver is configured to receive signals from all time slots except its own transmit slot. This multi-functionality allows the system to operate efficiently with reduced power requirements compared to traditional repeater systems.
2Reliability
If separate downlink channels are allocated for each station, then communication reliability is improved, but bandwidth utilization decreases
Solution Approach 1:
The patent merges the downlink functionality into the general transmission phase. Instead of allocating separate downlink channels, all stations transmit their downlink data simultaneously during the bidirectional communication phase. The receiver at each station processes signals from all transmitters, including its own and others', thereby maintaining reliable communication while efficiently utilizing available bandwidth.
3Object-generated harmful factors
If dedicated time slots are assigned for each transmission direction, then interference between transmissions is reduced, but time slot utilization efficiency decreases
Solution Approach 1:
The system employs periodic bidirectional communication phases where transmission and reception occur in a structured sequence. Each station transmits during its assigned time slot and receives during the same phase, creating a periodic pattern that manages interference while maximizing time slot utilization. This periodic structure allows efficient use of time resources compared to separate dedicated slots for each direction.
Data Source
AI summary
A radio communication repeater for operating in a Time Division Multiple Access radio communication system with a plurality of time slots to transmit packets. The repeater includes a transmitter to transmit a plurality of the packets in a transmit time slot assigned to that repeater and a receiver to receive a plurality of the packets from all other time slots of the TDMA radio communication system other than the transmit time slot assigned to that repeater. The repeater also includes a controller to process the received packets from all other time slots of the TDMA radio communication system other than the transmit time slot assigned to that repeater and, if the received packets have different recipient identifiers, to forward the received packets for transmission by the transmitter in the transmit time slot assigned to that repeater as a frame comprising a plurality of packets having different recipient identifiers.