System and method for selecting stable routes in wireless networks
First Claim
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1. A system for selecting a route through a wireless network, the system comprising:
- an access point and at least one subscriber device;
the access point being configured to respond to receipt of a first route request message including a first route request identifier value by sending to a source of the first route request message a first route response message including bi-directional route metrics from the first route request message, and the access point is adapted to respond to a second route request message including the first route request identifier value by sending a second route response message including bi-directional route metrics from the subsequent route request message if the route metrics from the second route request message are better than the route metrics from the first route request message; and
the subscriber device being configured to send along a first route to the access point the first route request message including the first route request identifier value, and the subscriber device is also configured to send the second route request message along a second route to the access point, the second route request including the route request identifier value that is the same as that included in the first route request.
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Abstract
A system and method for selecting a route from multiple potential routes in wireless network is shown. The present invention sends multiple route requests with the same route request identifier value concurrently to multiple candidate routes to obtain accurate bi-directional route metrics for candidate routes. The route having the best route metrics among the candidate routes is selected as the new route for communication through the wireless network.
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20 Claims
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1. A system for selecting a route through a wireless network, the system comprising:
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an access point and at least one subscriber device;
the access point being configured to respond to receipt of a first route request message including a first route request identifier value by sending to a source of the first route request message a first route response message including bi-directional route metrics from the first route request message, and the access point is adapted to respond to a second route request message including the first route request identifier value by sending a second route response message including bi-directional route metrics from the subsequent route request message if the route metrics from the second route request message are better than the route metrics from the first route request message; and
the subscriber device being configured to send along a first route to the access point the first route request message including the first route request identifier value, and the subscriber device is also configured to send the second route request message along a second route to the access point, the second route request including the route request identifier value that is the same as that included in the first route request. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A subscriber device for communicating with an access point device via a wireless network, the subscriber device comprising:
a controller, adapted to control the subscriber device to send along a first route to the access point a first route request message including a first route request identifier value, send along a second route to the access point a second route request message including the first route request identifier, receive route response messages from the access point that each include respective bi-directional route metrics, and select the second route for communication with the access point if the bi-directional route metrics for the second route are better than the bi-directional route metrics for the first route. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for selecting a route from a subscriber device of a wireless network to an access point, the method comprising:
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operating the access point to respond to receipt of a first route request message including a first route request identifier value by sending to a source of the first route request message a first route response message including bi-directional route metrics from the first route request message, and the access point is adapted to respond to a second route request message including the first route request identifier value by sending a second route response message including bi-directional route metrics from the subsequent route request message if the route metrics from the second route request message are better than the route metrics from the first route request message; and
operating the subscriber device to send along a first route to the access point the first route request message including the first route request identifier value, and the subscriber device is also configured to send the second route request message along a second route to the access point, the second route request including the route request identifier value that is the same as that included in the first route request. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification