Medium Access Control in Industrial and Automotive Wireless with Combined Wired and Wireless Sensor Networks
First Claim
1. A sensor network, comprising:
- a plurality of gateways configured to communicate over wired and wireless portions of a network;
a wireless node configured to communicate with at least one gateway of the plurality of gateways; and
a central unit configured to communicate with the plurality of gateways over the wired portion of the network, the central unit configured to receive a plurality of link quality indicators from the plurality of gateways for respective wireless paths from the wireless node to the plurality of gateways, the central unit further configured to select a gateway of the plurality of gateways for relaying a message from the central unit to the wireless node.
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Abstract
An embodiment of the invention relates to a local area sensor network including a central unit configured to receive a resource allocation request from a priority network sensor in a reserved timeslot and in response to designate a shared timeslot allocation. The priority network sensor transmits a resource allocation request in a reserved timeslot, and the sensor transmits data in the allocated shared timeslot. A sensor network can be formed with multiple gateways that each communicate over wired and wireless portions of the network. The central unit communicates with the gateways over the wired portion of the network. Wireless nodes communicate wirelessly with the gateways. The central unit receives a plurality of link quality indicators from the gateways for respective wireless paths to the wireless sensors, and selects a gateway for relaying a message from the central unit to a wireless sensor based on the link quality indicators.
34 Citations
20 Claims
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1. A sensor network, comprising:
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a plurality of gateways configured to communicate over wired and wireless portions of a network; a wireless node configured to communicate with at least one gateway of the plurality of gateways; and a central unit configured to communicate with the plurality of gateways over the wired portion of the network, the central unit configured to receive a plurality of link quality indicators from the plurality of gateways for respective wireless paths from the wireless node to the plurality of gateways, the central unit further configured to select a gateway of the plurality of gateways for relaying a message from the central unit to the wireless node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a sensor network, the method comprising:
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configuring a plurality of gateways to communicate over wired and wireless portions of the sensor network; configuring a central unit to communicate with the plurality of gateways over the wired portion of the sensor network; receiving by the central unit a plurality of link quality indicators from the plurality of gateways for respective wireless paths from a wireless node to the plurality of gateways; and selecting a gateway of the plurality of gateways by the central unit for relaying a message from the central unit to the wireless node. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A sensor network, comprising:
a central transceiver configured to communicate with a plurality of gateways over a wired portion of the sensor network, receive a plurality of link quality indicators from the plurality of gateways for respective wireless paths from a wireless sensor node to the plurality of gateways, and select a gateway of the plurality of gateways for relaying a message from the central transceiver to the wireless sensor node. - View Dependent Claims (19, 20)
Specification