Methodology for base station assisted channel selection for interference handling in mobile networks

• US 20100091738A1
• Filed: 08/24/2009
• Published: 04/15/2010
• Est. Priority Date: 10/11/2008
• Status: Active Grant

• Current Assignee: Vislink Technologies, Inc.
• Original Assignee: xG Technology, Inc.
• Inventors: Shukla, Amit, Gandham, Shashidhar R.
• Granted Patent: US 8,355,373 B2
• Time in Patent Office: Days
• US Class Current: 370/331
• CPC Class Codes: H04W 36/0061 of neighbour cell information
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

A mechanism is disclosed where a Base Station provides assistance to a mobile device in the channel-switch process because a mobile device might have to perform frequent channel switches to overcome adverse channel conditions due to interference in the 900 MHz ISM band. The Base Station broadcasts channel-specific information that will be used by all mobile devices to accurately select prospective channels for future channel-switches, thereby cutting down the latency that is experienced during an actual switch.

Claims

1. A method for base station assisted channel selection used for mobile node handset scanning and handoff between multiple base stations having each having multiple channels and a medium access control protocol for forwarding Internet Protocol packets between multiple base stations and mobile nodes in voice over the Internet protocol systems on a wireless network comprising:

multiple base stations in electrical communication with the Internet and each of said multiple base stations periodically calculating channel conditions;

one or more mobile nodes in wireless electrical communication with one of said multiple base stations;

said multiple base stations and said one or more mobile nodes each having a medium access control protocol containing hyperframes made up of multiple superframes;

each of said multiple base stations transmitting a beacon signal at the start of each said superframe on each of said multiple base stations'"'"' multiple channels;

said beacon signal containing a base station identifier, the position of said superframe in said hyperframe containing said beacon signal, and channel information containing channel interference, voice capacity, data capacity, and mobile node registration information; and

,

wherein each of said one or more mobile nodes uses the base station identifier, the position of said superframe in said hyperframe containing said beacon signal, and channel information containing channel interference, voice capacity, data capacity, and mobile node registration information contained in said beacon signal to determine the most suitable of said multiple channels for scanning and handoff.