Method and a device for roaming in a local communication system
First Claim
1. A local communication network comprising a plurality of client communication units, each of said client communication units comprising:
- a first interface unit and a second interface unit, said first interface unit being operatively connected to said local communication network and said second interface unit being operatively connected to a remote communication networks;
a bridging network unit capable of transparently bridging traffic between said local communication network and said remote communication network; and
a roaming control unit comprising means for determining whether a communication path is preferred, wherein the preferred communication path exhibits improved transmission properties;
whereina first of the client communication units operates in a first mode, in which the first client communication unit bridges traffic between said local communication network and said remote communication network through a first communication path; and
a second of the client communication units operates in a second mode, in which the second client communication unit scans for a second communication path alternate to the first communication path;
whereinthe roaming control unit of said first client communication unit is operatively connected to the second client communication unit for establishing communication through said second communication path,said second client communication unit is operatively connected to said first client communication unit for checking operational status of the first client communication unit, andsaid first client communication unit arranged for switching mode from said first mode to said second mode and for switching mode of said second client communication unit from said second mode to said first mode when the second communication path is determined as preferred, and for activating said bridging network unit of said second client communication unit, now operating in said first mode, to transparently bridge traffic between said local communication network and said remote communication network so as to allow only one of the first client communication unit and second client communication unit to bridge traffic at a time.
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Accused Products
Abstract
A local communication network (16) comprising a first client communication unit (10) and at least one second communication unit (12), and a method of roaming. The client communication units comprise a first interface unit (14) and a second interface unit (18) for connecting to said local communication network (16) and a remote network (20), respectively, and a bridging unit (22). The client communication units are operative in a first mode, in which said first client communication unit (10) bridges traffic between said local communication network (16) and said remote communication network (20) through a first communication path, and in a second mode, in which said second communication unit (12) scans for an alternative second communication path. A roaming control unit (24) determines whether the alternative second communication path is preferred over said first communication path. If this is the case mode of operation is switched and bridging is taken over by said second client communication unit (12).
19 Citations
9 Claims
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1. A local communication network comprising a plurality of client communication units, each of said client communication units comprising:
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a first interface unit and a second interface unit, said first interface unit being operatively connected to said local communication network and said second interface unit being operatively connected to a remote communication networks; a bridging network unit capable of transparently bridging traffic between said local communication network and said remote communication network; and a roaming control unit comprising means for determining whether a communication path is preferred, wherein the preferred communication path exhibits improved transmission properties;
whereina first of the client communication units operates in a first mode, in which the first client communication unit bridges traffic between said local communication network and said remote communication network through a first communication path; and a second of the client communication units operates in a second mode, in which the second client communication unit scans for a second communication path alternate to the first communication path;
whereinthe roaming control unit of said first client communication unit is operatively connected to the second client communication unit for establishing communication through said second communication path, said second client communication unit is operatively connected to said first client communication unit for checking operational status of the first client communication unit, and said first client communication unit arranged for switching mode from said first mode to said second mode and for switching mode of said second client communication unit from said second mode to said first mode when the second communication path is determined as preferred, and for activating said bridging network unit of said second client communication unit, now operating in said first mode, to transparently bridge traffic between said local communication network and said remote communication network so as to allow only one of the first client communication unit and second client communication unit to bridge traffic at a time. - View Dependent Claims (2, 3)
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4. A method of roaming in a local communication system comprising a plurality of client communication units, said method comprising steps of:
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a) establishing a first communication path between a first of the client communication units and a remote communication network, said first client communication unit operating in a first mode, b) in a second of the client communication units, while operating in a second mod, continuously scanning for a second communication path for providing improved transmission properties as compared to the first communication path, c) in said second client communication unit, preparing and establishing the second communication path, d) executing roaming of communication from said first communication path to said second communication path upon a determination that the second communication path provides improved transmission properties as compared to the first communication path and said communication path with improved transmission properties is preferred, e) disrupting communication between said first client communication unit of said local communication system and said remote communication network so as to allow only one of the first client communication unit and second client communication unit to bridge traffic at a time, f) in said second client communication unit continuously monitoring said first client communication unit for fail detection and g) in said first client communication unit of said local communication system while operating in said second mode continuously scanning for a further communication path providing improved transmission properties as compared to said second communication path. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification