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US 2009/0275338 A1Published application
Using wake-up receivers for soft hand-off in wireless communications
AssigneeTerahop Networks, Inc.
InventorRobert W. Twitchell, JR.
Life of this patent
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Abstract
Multiple standards based radio (“SBR”) devices, each having a high-gain directional antenna, are utilized in a remote sensor interface (“RSI”) unit to optimize detection and reception by the RSI of radio signals from gateway controllers, hopping radios, and other wireless devices.
Claims16
A method of facilitating a soft hand-off in wireless communications, comprising:
- (a) providing a first wireless component and a second wireless component, the second wireless component including a controller and first and second low power radio systems;
- (b) receiving, at a wake-up receiver of the first low power radio system in the second wireless component, a first wake-up signal;
- (c) in response to receiving the first wake-up signal, sending a first electronic signal to the controller;
- (d) in response to receiving the first electronic signal at the controller, activating a two-way wireless communication device of the first low power radio system, thereby facilitating two-way wireless communication with the first wireless component;
- (e) receiving, at a wake-up receiver of the second low power radio system in the second wireless component, a second wake-up signal;
- (f) in response to receiving the second wake-up signal, sending a second electronic signal to the controller;
- and
- (g) in response to receiving the second electronic signal at the controller, activating a two-way wireless communication device of the second low power radio system and deactivating the two-way wireless communication device of the first low power radio system, thereby facilitating two-way wireless communication with the first wireless component.
5 more elements
A remote sensor interface, comprising:
- (a) a sensor input adapted to receive data from a sensor device;
- (b) a plurality of low power radio systems, each including:
- (i) a two way wireless communication device, and
- (ii) a wake-up receiver;
- and
- (c) a controller, connected to each wake-up receiver to receive signals therefrom and further connected to each two-way wireless communications device to effect two-way communication therethrough, wherein the controller is adapted to select one of the plurality of two-way wireless communication devices for external two-way wireless communications, the selection being made on the basis of an electronic signal received from at least one of the plurality of wake-up receivers;
- (d) wherein the controller is adapted to wirelessly transmit data, received from the sensor device connected to the sensor input, via the selected two-way wireless communications device.
4 more elements
A remote sensor interface link, comprising:
- (a) a plurality of low power radio systems, each including:
- (i) a two way wireless communication device, and
- (ii) a wake-up receiver;
- and
- (b) a controller, connected to each wake-up receiver to receive signals therefrom and further connected to each two-way wireless communications device to effect two-way communication therethrough, wherein the controller is adapted to select one of the plurality of two-way wireless communication devices for external two-way wireless communications, the selection being made on the basis of an electronic signal received from at least one of the plurality of wake-up receivers;
- (c) wherein the controller is adapted to wirelessly transmit sensor data, received from a remote sensor interface, via the selected two-way wireless communications device.
3 more elements
16-26. (canceled)
Dependencies are inferred from the claim text.