Reconnection of wireless calls to mobile units in border cells
First Claim
1. A method of performing a network-initiated reconnect of a mobile unit having experienced a service interruption during a call session controlled by a first mobile switching center (MSC) and not responding to a page attempt from the first MSC, the method comprising a second MSC:
- receiving from the first MSC, a suspended call page request;
paging the mobile unit;
setting up a bearer channel to the mobile unit; and
sending to the first MSC a suspended call page response including indicia of the bearer channel set up by the second MSC to the mobile unit.
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Accused Products
Abstract
Reconnection of a mobile unit to a call session controlled by a first MSC is supported responsive to a network-initiated or mobile-originated reconnect attempt even in instances where the mobile unit has roamed to a border cell controlled by a second MSC. In a network-initiated reconnect attempt, the first MSC sends a suspended call page request to a second MSC. The second MSC pages the mobile unit, sets up a bearer channel to the mobile unit, and sends to the first MSC a suspended call page response including indicia of the bearer channel set up by the second MSC. The first MSC establishes a bearer channel to the second MSC thereby reconnecting the mobile unit to the call session. In a mobile-originated reconnect attempt, the mobile unit sends a mobile-originated reconnect message to the second MSC. If the second MSC does not find session information associated with the call, it sends a suspended call handoff request to the first MSC causing the first MSC to query a database to find indicia of the call session, establish a bearer channel to the second MSC and send to the second MSC a suspended call handoff acknowledgement including information associated with the call session. The second MSC establishes a bearer channel to the mobile unit thereby reconnecting the mobile unit to the call session.
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Citations
13 Claims
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1. A method of performing a network-initiated reconnect of a mobile unit having experienced a service interruption during a call session controlled by a first mobile switching center (MSC) and not responding to a page attempt from the first MSC, the method comprising a second MSC:
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receiving from the first MSC, a suspended call page request;
paging the mobile unit;
setting up a bearer channel to the mobile unit; and
sending to the first MSC a suspended call page response including indicia of the bearer channel set up by the second MSC to the mobile unit. - View Dependent Claims (2)
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3. A method of performing a mobile-originated reconnect of a mobile unit having experienced a service interruption during a call session controlled by a first mobile switching center (MSC), the method comprising the first MSC:
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receiving, from a second MSC, a suspended call handoff request;
querying a database to find indicia of the call session;
sending to the second MSC a suspended call handoff acknowledgement including information associated with the call session; and
establishing a bearer channel to the second MSC. - View Dependent Claims (4, 5)
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6. In a wireless communication system wherein a call is established between a mobile unit and one or more participating units, the mobile unit being served by a first mobile switching center (MSC) when a service interruption is detected to the mobile unit, a method comprising:
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maintaining bearer channels from the first MSC to the one or more participating units, at least temporarily, while awaiting possible reconnection of the mobile unit;
determining that the mobile unit has roamed to a location served by a second MSC;
establishing a bearer channel from the second MSC to the mobile unit; and
establishing a bearer channel between the first and second MSC, thereby completing a reconnect of the mobile unit to the call. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification