CHANNEL MANAGEMENT METHOD IN A DISTRIBUTED SPECTRUM COGNITIVE RADIO NETWORK
First Claim
1. A source assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data using a current channel and having a plurality of communicating devices forming a group, the method comprising the steps of:
- configuring said source of multimedia stream to track traffic schedule of said data;
proactively scanning for back-up channels which could be used in lieu of the current channel;
identifying certain communicating devices (1, 2, 3) in the network which should vacate a current channel when any one device from the group of communicating devices detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule; and
,ensuring that no interference is caused to existing users and QoS is maintained.
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Accused Products
Abstract
A source-assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data handles a plurality of communicating devices (1, 2, 3) forming a group, and manages channels with no separate controller that is referenced in applicable IEEE standard. The source makes the reservation on behalf of the device group knows traffic schedule, and determines out-of-band channel scanning, back up channel and channel vacation. The method uses a flexible MAC superframe structure and proactively scans for back-up channels which could be used in lieu of the current channel, identifies devices in the group which should vacate a current channel when any one device from the group of communicating devices (1, 2, 3) detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule. The method ensures that no interference is caused to existing users and maintains QoS.
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Citations
20 Claims
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1. A source assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data using a current channel and having a plurality of communicating devices forming a group, the method comprising the steps of:
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configuring said source of multimedia stream to track traffic schedule of said data; proactively scanning for back-up channels which could be used in lieu of the current channel; identifying certain communicating devices (1, 2, 3) in the network which should vacate a current channel when any one device from the group of communicating devices detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule; and
,ensuring that no interference is caused to existing users and QoS is maintained. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A source assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data using a current channel and having a plurality of communicating devices (1, 23) forming a group, without using a separate controller that is referenced in applicable IEEE standard, the method comprising the steps of:
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configuring said source of multimedia stream to track traffic schedule of said data; proactively scanning for back-up channels which could be used in lieu of the current channel; identifying certain communicating devices in the network which should vacate a current channel when any one device from the group of communicating devices detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule; and
,ensuring that no interference is caused to existing users and QoS is maintained. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data using a current channel and having a plurality of communicating devices (1, 2, 3) forming a group, without using a separate controller that is referenced in applicable IEEE standard, the method comprising the steps of:
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configuring said source of multimedia stream to track traffic schedule of said data; proactively scanning for back-up channels which could be used in lieu of the current channel; identifying certain communicating devices in the network which should vacate a current channel when any one device from the group of communicating devices detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule;
ensuring that no interference is caused to existing users and QoS is maintained,the method using a signaling window for exchanging network entry messages and channel reservation requests;
the method including the step of synchronizing the devices to resume transmission in a selected back-up channel after channel switch, retaining for the selected back-up channel unchanged settings/states as used in said current channel.
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Specification