IoT Relay Routing for Power Consumption Reduction
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Solution Overview
Problem
In multihop communication systems, the use of the same relay for both data upload and down-link communication from an IoT device to a base station leads to increased power consumption in the relay.
Innovation Solution
Implementing a controller that manages multihop routing for data uploads via relays while using a different route for down-link communications from the base station to the IoT device, potentially reducing the number of relays involved and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same relay is used for both data upload and down-link communication, then routing simplicity is maintained, but power consumption in the relay increases
Solution Approach 1:
The patent divides the communication path into separate uplink and downlink routes. The uplink uses multihop routing through relays while the downlink uses a direct route, segmenting the traffic flow to reduce relay power consumption while maintaining routing functionality.
Solution Approach 2:
The system dynamically selects different routes for uplink and downlink communications based on traffic direction. The downlink route is changed from the default relay path to a direct path, making the routing adaptive and dynamic rather than static and symmetric.
2Reliability
If multihop routing via relay is used for data upload, then connectivity is achieved in low-bit-rate regions, but the relay experiences increased power consumption
Solution Approach 1:
The communication traffic is segmented into uplink and downlink components with different routing requirements. Uplink traffic uses multihop relay routing for reliable connectivity, while downlink traffic uses direct routing to reduce relay power consumption, achieving both reliability and energy efficiency.
Solution Approach 2:
Different quality characteristics are applied to different parts of the communication system. The uplink path maintains high reliability through relay assistance, while the downlink path optimizes for energy efficiency through direct transmission, creating locally optimized solutions for each direction.
3Use of energy by moving object
If a direct route is used for down-link communication, then power consumption in relay is reduced, but routing complexity increases
Solution Approach 1:
The routing system implements dynamic path selection where the downlink route is changed from the default relay path to a direct path based on traffic direction. This dynamic adaptation reduces relay power consumption while the routing complexity is managed through automated route selection mechanisms.
Solution Approach 2:
The base station acts as an intermediary that manages the different routing paths for uplink and downlink. It coordinates the direct downlink transmission while maintaining the relay-based uplink path, simplifying the overall routing complexity by centralizing the routing decision-making function.
Data Source
AI summary
An information processing apparatus that suppresses a power consumption problem in a relay terminal includes a first controller that controls an IoT device to perform multihop routing via at least one relay on an upload of data from the IoT device to a base station, and a second controller that controls the base station to use, on a down-link from the base station to the IoT device, a route different from a route that uses at least one relay.