Method of performing handoff in wireless asynchronous transfer mode network
First Claim
Patent Images
1. A network structure, comprising;
- a first server managing a first area including a portion of first subcells of a first cell; and
a second server managing a second area including another portion of the first subcells and a portion of second subcells of a second cell.
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Abstract
Disclosed is a handoff method in a wireless ATM network. A method of performing a handoff in a network system having a first server managing a first area including a portion of first subcells of a first cell, and a second server managing a second area including another portion of the first subcells, comprises the steps of requesting, at the first server, for setting up a new communication path for a terminal which moves from the first area to the second area, setting up the new communication path at the second server, and performing a first handoff between the servers using the set-up communication path.
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Citations
14 Claims
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1. A network structure, comprising;
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a first server managing a first area including a portion of first subcells of a first cell; and
a second server managing a second area including another portion of the first subcells and a portion of second subcells of a second cell. - View Dependent Claims (2, 3)
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4. A network structure, comprising;
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a first server managing a first area including a portion of first subcells of a first cell; and
a second server managing a second area including another portion of the first subcells and a portion of second subcells of a second cell, wherein handoffs are performed between the subcells of the areas and between the servers. - View Dependent Claims (5)
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6. A method of performing a handoff in a network system having a first server managing a first area including a portion of first subcells of a first cell, and a second server managing a second area including another portion of the first subcells, comprising:
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requesting, at the first server, for setting up a new communication path for a terminal which moves from the first area to the second area;
setting up the new communication path at the second server; and
performing a first handoff between the servers using the set-up communication path. - View Dependent Claims (7)
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8. A method of performing a handoff in a network system having a first server managing a first area including a portion of first subcells of a first cell, and a second server managing a second area including another portion of the first subcells, each of the first sever and the second server includes asynchronous transmission mode (ATM) for establishing a communication path of each cell, comprising:
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requesting, at the first server, for setting up a new communication path for a terminal which moves from the first area to the second area;
setting up, at the second server, the new communication path using a corresponding ATM switch; and
performing a first handoff between the servers using the set-up communication path. - View Dependent Claims (9)
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10. A method of performing a handoff in a wireless asynchronous transfer mode (WATM) network, comprising:
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dividing a network configuration into an intra domain having an intra domain server for processing the handoff inside a cell and an inter domain having an inter domain server for connecting subcells located on a bound area between the cell and another cell;
connecting the subcells to form one cell by the inter domain server;
if an additional procedure for one crust cell is completed according to a moving path of a terminal, transmitting a re-routing path setup request message from the intra domain server to the inter domain server;
after the inter domain server performs an ATM path setup procedure for the added crust cell, transmitting a re-routing path setup completion acknowledgement message to the intra domain server; and
performing a soft handoff as the terminal successively moves through the inter domain region. - View Dependent Claims (11)
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12. A method of performing a handoff in a wireless asynchronous transfer mode (WATM) network including a first intra domain region having a first intra domain server, a second intra domain region having a second intra domain server, and a second inter domain region having a second inter domain server, comprising:
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connecting crust cells to form one cluster at the inter domain server;
adding a first crust base station according to a request of a terminal at the first intra domain server;
transmitting a first re-routing path setup request message to the inter domain server for the handoff between the domain servers at the first intra domain server;
setting the re-routing path to support the handoff without interruption at the inter domain server;
transmitting a re-routing path setup completion acknowledgement message to the first intra domain server at the inter domain server;
setting the re-routing path to support the handoff without interruption at the inter domain server; and
performing a soft handoff as the terminal successively moves through the inter domain region. - View Dependent Claims (13, 14)
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Specification