US 9,094,837 B2 · Transmitting data in a wireless white space network

Abstract

There is provided a computer-implemented method for transmitting data over a wireless network using white spaces. A first white space transmission channel is determined for communicating with mobile client devices. Wireless communication takes place with the mobile client devices over the first white space transmission channel. If the first white space transmission channel becomes unavailable to one of the mobile client devices because of the presence of a primary user on the first white space transmission channel, a different white space transmission channel is determined for communicating with the mobile client device that is affected. The first white space transmission channel may become unavailable to the affected mobile client device, for example, because a primary user begins using the first white space transmission channel in proximity to the affected device. The primary user may be a wireless microphone. Thereafter, communication with the affected wireless device takes place on the different white space transmission channel, while unaffected devices continue to communicate on the first white space transmission channel. Also provided are an exemplary wireless base station and an exemplary mobile client device.

Claims19

Dependent claims

A computer-implemented method for transmitting data over a wireless network using white spaces, the method comprising:

determining one or more white space transmission channels for communicating with a plurality of mobile client devices, based on a quality of the white space transmission channels, a channel switching overhead associated with serving the mobile client devices on the white space transmission channels, and whether the mobile client devices are moving on a vehicle;
and
communicating with the mobile client devices via a first white space transmission channel or a second white space transmission channel, the first white space transmission channel being a very high frequency (VHF) channel used to transmit data when the mobile client devices are in motion on the vehicle, the second white space transmission channel being an ultra-high frequency (UHF) channel used to transmit data when the mobile client devices are not in motion on the vehicle.

A mobile client device comprising a computer processor, the mobile client device configured to transmit and receive data using white spaces, the mobile client device communicating with a wireless base station over a first white space communication channel when the first white space communication channel is not being used by a primary user and communicating with the wireless base station over a second white space communication channel when the first white space communication channel is being used by the primary user, the first white space transmission channel or the second white space transmission channel being a very high frequency (VHF) channel when the mobile client device is in motion on the vehicle, the first white space transmission channel or the second white space channel being an ultra-high frequency (UHF) channel when the mobile client device is not in motion on the vehicle, the first white space communication channel and the second white space communication channel being selected by the mobile client device based on:

a quality of the white space transmission channels;
a channel switching overhead associated with serving the mobile client device on the white space transmission channels;
whether the mobile client device is moving on a vehicle;
and
whether the mobile client device is in a local spectrum asymmetry (LSA) situation with a local wireless device.

2 more elements

Dependencies are inferred from the claim text.

Transmitting data in a wireless white space network

Life of this patent

Transmitting data in a wireless white space network

Life of this patent

Abstract

Claims19