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US 2012/0257530 A1Published application
Communication Method and Devices for High Density Wireless Networks
AssigneeAmbient Holding B.V.
InventorsDennis Bijwaard, Paul Havinga, Lodewijk Van Hoesel
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Abstract
This document describes a method for wireless communication in large-scale monitoring and actuation applications. Typically, these networks must be designed to use efficiently available bandwidth in the wireless communication channel and to be able to deal with high node densities. The method mitigates the effects of co-channel interference, while allowing spatially distributed simultaneous transmissions.
Claims20
Communication method for high density wireless networks, comprising the steps of:
- providing a terminal comprising a radio receiver, the terminal being comprised by one cluster comprising at least one terminal, and wherein the cluster is associated with a geographical area wherein the terminal is located;
- for each cluster,
- providing a cluster master device associated with the cluster, the cluster master device comprising a radio transmitter and a radio receiver;
- and
- providing a central node associated with at least one cluster, the central node comprising a radio transmitter and a radio receiver;
- wherein a plurality of clusters are associated with a super cluster;
- wherein communication slots are delimited in time and frequency;
- further comprising the steps of:
- within a super cluster, allocating unique communication slots to clusters, such that the super cluster and its neighboring super clusters are aligned such that the distance between clusters with identical communication slots is maximal, in order to minimize the co-channel interference;
- the cluster master device determining a schedule allocating communication slots allocated to the cluster, to the terminals comprised in the cluster;
- the cluster master device communicating the schedule to the terminals comprised in the cluster.
8 more elements
Terminal comprising:
- a radio receiver, and an actuator;
- wherein the terminal is associated with a cluster comprising at least a terminal and a cluster master device;
- and
- wherein the terminal is configured to:
- receive a schedule comprising allocations allocating a communication slot, delimited in time and frequency, to the terminal;
- and
- receive a command to be executed by the actuator during the communication slot allocated to the terminal.
4 more elements
Terminal comprising:
- a radio receiver, a radio transmitter, and a sensor;
- wherein the terminal is associated with a cluster comprising at least a terminal and a cluster master device;
- and
- wherein the terminal is configured to:
- receive a schedule comprising allocations allocating a communication slot, delimited in time and frequency, to the terminal;
- and
- transmit measurement data acquired by the sensor during the communication slot allocated to the terminal.
4 more elements
Cluster master device comprising:
- a radio receiver, and a radio transmitter;
- wherein the cluster master device is comprised by a cluster, further comprising at least a terminal;
- and
- wherein the cluster master device is configured to determine a schedule comprising allocations allocating a communication slot, delimited in time and frequency, to each terminal associated with the cluster;
- and
- wherein the cluster master device is configured to:
- transmit to a terminal in its associated cluster, the terminal comprising an actuator, a command to be executed by the actuator, the transmission of the command being scheduled during the communication slot allocated to the terminal according to the transmitted schedule;
- and/or
- receive from a terminal in its associated cluster, the terminal comprising a sensor, measurement data acquired by the sensor, the transmission of the measurement data being scheduled during the communication slot allocated to the terminal according to the transmitted schedule.
6 more elements
Central node comprising:
- a radio receiver, and a data storage;
- wherein the central node is configured to receive measurement data from a cluster master device, and to store the received measurement data in the data storage.
Central node comprising:
- a radio transmitter for communicating with at least one cluster master device, the cluster master device being comprised in a cluster further comprising at least one terminal, the cluster being comprised in a super cluster comprising at least one further cluster;
- means for determining for each cluster in the super cluster, an allocation of communication slots, delimited in time and frequency, such that the super cluster and its neighboring super clusters are aligned such that the distance between clusters with identical communication slots is maximal, in order to minimize the co-channel interference;
- wherein the central node is configured to transmit the allocation of communication slots to the cluster master device of each cluster in the super cluster.
System comprising a terminal comprising:
- a radio receiver, and an actuator;
- wherein the terminal is associated with a cluster comprising at least a terminal and a cluster master device;
- and
- wherein the terminal is configured to:
- receive a schedule comprising allocations allocating a communication slot, delimited in time and frequency, to the terminal;
- and
- receive a command to be executed by the actuator during the communication slot allocated to the terminal;
- a cluster master device comprising a radio receiver, and a radio transmitter;
- wherein the cluster master device is comprised by a cluster, further comprising at least a terminal;
- and
- wherein the cluster master device is configured to determine a schedule comprising allocations allocating a communication slot, delimited in time and frequency, to each terminal associated with the cluster;
- and
- wherein the cluster master device is configured to:
- transmit to a terminal in its associated cluster, the terminal comprising an actuator, a command to be executed by the actuator, the transmission of the command being scheduled during the communication slot allocated to the terminal according to the transmitted schedule;
- and/or
- receive from a terminal in its associated cluster, the terminal comprising a sensor, measurement data acquired by the sensor, the transmission of the measurement data being scheduled during the communication slot allocated to the terminal according to the transmitted schedule;
- and
- a central node comprising:
- a radio receiver, and a data storage;
- wherein the central node is configured to receive measurement data from a cluster master device, and to store the received measurement data in the data storage.
17 more elements
Dependencies are inferred from the claim text.