Telecommunications Repeater Node Time Slot Allocation
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Solution Overview
Problem
Repeater nodes in telecommunication networks introduce finite delays in data transmission, which is undesirable in applications requiring timely data receipt, such as alarm systems, and existing methods to reduce delays increase cost and complexity by requiring simultaneous data transmission and reception capabilities.
Innovation Solution
A telecommunications system using a time frame divided into slots, where each repeater node transmits data during its designated slot, minimizing power consumption and allowing for reduced delay in data transmission by allocating adjacent time slots for downstream data, while potentially increasing delay in upstream data, with the option to reverse the time frame order to prioritize either direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If repeater nodes use two channels for simultaneous data transmission and reception, then data transmission delay is reduced, but device complexity and power consumption increase
Solution Approach 1:
The patent implements periodic time-division multiplexing where repeater nodes alternate between transmission and reception modes in sequential time slots. Each repeater node transmits data in one time slot and receives data in another time slot within a repeating cycle, eliminating the need for simultaneous transmit/receive capabilities while maintaining efficient data flow through the network.
2Loss of time
If repeater nodes use two channels for simultaneous data transmission and reception, then data transmission delay is reduced, but power consumption increases
Solution Approach 1:
The system employs periodic time-division multiplexing where each repeater node activates transmission circuitry in one time slot and reception circuitry in another time slot within a repeating cycle. This periodic switching allows repeater nodes to use lower-power single-mode circuitry instead of maintaining both transmit and receive circuitry simultaneously, significantly reducing power consumption while maintaining data flow efficiency.
3Speed
If time slots are allocated to minimize delay in one direction, then data transmission speed is improved in that direction, but delay increases in the opposite direction
Solution Approach 1:
The patent implements dynamic time frame reversal where the sequence of time slots allocated to repeater nodes can be inverted based on traffic conditions. When downstream traffic dominates, time slots are arranged to minimize downstream delay; when upstream traffic dominates, the entire time frame sequence is reversed to prioritize upstream transmission, allowing the system to adapt to varying traffic patterns in real-time.
Data Source
AI summary
A telecommunications system including a plurality of repeater nodes, each repeater node having a transceiver unit operable to transmit and receive data to or from one or more other of the repeater nodes or a control node or a mobile device within a predetermined range. The control node operable to transmit data to and receive data from the mobile device via the repeater nodes using a time frame divided into a plurality of time slots. The time slots of the time frame are allocated to the repeater nodes to the effect that each repeater node transmits to another repeater node in one of the upstream or the downstream directions in a time slot which is a minimal time from the time slot in which the other repeater node transmits in the upstream or downstream direction.