Patent US6909899B2 successfully refreshed from Google Patents.
US6909899B2
Expired / Lapsed
US
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Method and apparatus for handoff in a communication system supporting multiple service instances
Assignee: Qualcomm Inc
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Filing: 2002-03-11
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Granted: 2005-06-21
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Expires: 2022-03-11
Abstract
Abstract Method and apparatus for effecting handoff in a system supporting both wireless and packet data service communications. In one embodiment, the serving network provides information to the target network sufficient to establish the Point-to-Point Protocol (PPP) connections for handoff. In an alternate embodiment, the serving network and the target network do not share capabilities with respect to concurrent multiple service instances. When the serving network knows the status of the target network, the serving network takes responsibility for the handoff.
Inventors
- 👤 Jun Wang
- 👤 Raymond T. Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:55
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/08; H04W36/0005; H04L; H04L65/00; H04L65/1066; H04L65/1069; H04L67/00; H04L67/14; H04L69/00; H04L69/14; H04L69/16; H04L69/165; H04L69/168; H04L65/1101; H04L69/30; H04L69/32; H04L69/322; H04L69/329; H04W36/0011; H04W36/0019; H04W36/16; H04W36/18; H04W80/00; H04W80/04; H04W92/00; H04W92/02
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
90 words
A method for handoff in a communication system, comprising: prior to initiation of a handoff, establishing a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; initiating the handoff from the serving radio network to a target radio network; and sending a message to a target packet data service node identifying the main link.
Claim 2
Independent Claim
90 words
A method for handoff in a communication system, comprising: prior to initiation of a handoff, establishing a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; initiating the handoff from the serving radio network to a target radio network; and sending a message to a target packet data service node identifying the main link.
Claim 3
Dependent Claim
28 words
The method as in claim 1 , further comprising: establishing a main link and a secondary link between the mobile unit and the target packet data service node.
Claim 4
Dependent Claim
27 words
The method as in claim 2 , further comprising: sending a Point-to-Point Protocol (PPP) configuration request from the target packet data service node to the mobile unit.
Claim 5
Dependent Claim
29 words
The method as in claim 1 , wherein the main link is associated with a first service instance, and the secondary link is associated with a second service instance.
Claim 6
Dependent Claim
19 words
The method as in claim 4 , wherein the second service instance is a Voice over Internet Protocol service.
Claim 7
Dependent Claim
24 words
The method as in claim 1 , wherein the serving packet data service node and the target packet data service node incorporate compatible protocols.
Claim 8
Dependent Claim
15 words
The method as in claim 6 , wherein the compatible protocols are a same protocol.
Claim 9
Dependent Claim
25 words
The method as in claim 1 , wherein the initiating further comprises: sending a pilot report from the mobile unit to the serving radio network.
Claim 10
Dependent Claim
23 words
The method as in claim 8 , further comprising: sending a handoff message form the service radio network to the target radio network.
Claim 11
Dependent Claim
16 words
The method as in claim 9 , wherein the pilot report identifies a pilot signal strength.
Claim 12
Dependent Claim
17 words
The method as in claim 1 , wherein the message is a reply to a registration request.
Claim 13
Independent Claim
140 words
A method for handoff in a communication system, comprising: initiating handoff from a serving radio network to a target radio network, wherein prior to initiation of the handoff, a first link and a second link are established between a mobile unit and a serving packet data service node via a serving radio network, the first link and the second link corresponding to separate connections between the serving packet data service node and the serving radio network; receiving a registration request from the target radio network; sending a link initiation message to the mobile unit on the first link via the target radio network, the first link associated with a first service instance; and sending the link initiation message to the mobile unit on the second link via the target radio network, the second link associated with a second service instance.
Claim 14
Independent Claim
140 words
A method for handoff in a communication system, comprising: initiating handoff from a serving radio network to a target radio network, wherein prior to initiation of the handoff, a first link and a second link are established between a mobile unit and a serving packet data service node via a serving radio network, the first link and the second link corresponding to separate connections between the serving packet data service node and the serving radio network; receiving a registration request from the target radio network; sending a link initiation message to the mobile unit on the first link via the target radio network, the first link associated with a first service instance; and sending the link initiation message to the mobile unit on the second link via the target radio network, the second link associated with a second service instance.
Claim 15
Dependent Claim
17 words
The method as in claim 12 , wherein the first link is a Point-to-Point Protocol (PPP) connection.
Claim 16
Dependent Claim
20 words
The method as in claim 13 , wherein the second link is an auxiliary link for Voice over Internet Protocol.
Claim 17
Dependent Claim
18 words
The method as in claim 12 , further comprising: requesting registration from a serving packet data service node.
Claim 18
Independent Claim
127 words
A method for handoff in a communication system, comprising: prior to initiation of a handoff, establishing a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving racket data service node and the serving radio network; initiating the handoff from the serving radio network to a target radio network, the serving radio network adapted to support multiple service instances, the target radio network adapted to support one service instance; terminating the secondary link to the serving radio network; sending main link information of the serving radio network to the target radio network; and performing the handoff to the target radio network.
Claim 19
Independent Claim
127 words
A method for handoff in a communication system, comprising: prior to initiation of a handoff, establishing a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving racket data service node and the serving radio network; initiating the handoff from the serving radio network to a target radio network, the serving radio network adapted to support multiple service instances, the target radio network adapted to support one service instance; terminating the secondary link to the serving radio network; sending main link information of the serving radio network to the target radio network; and performing the handoff to the target radio network.
Claim 20
Independent Claim
134 words
A method for handoff in a communication system, comprising: prior to initiation of a handoff, establishing a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; initiating the handoff from a serving radio network to a target radio network, the serving radio network coupled to a serving packet data service node adapted to support multiple service instances, the target radio network coupled to a target packet data service node adapted to support one service instance; sending main link information of the serving radio network to the target radio network; and performing the handoff to the target radio network.
Claim 21
Independent Claim
134 words
A method for handoff in a communication system, comprising: prior to initiation of a handoff, establishing a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; initiating the handoff from a serving radio network to a target radio network, the serving radio network coupled to a serving packet data service node adapted to support multiple service instances, the target radio network coupled to a target packet data service node adapted to support one service instance; sending main link information of the serving radio network to the target radio network; and performing the handoff to the target radio network.
Claim 22
Independent Claim
94 words
An apparatus in a communication system, comprising: means for establishing, prior to initiation of a handoff, a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; means for initiating the handoff from the serving radio network to a target radio network; and means for sending a message to a target packet data service node identifying the main link.
Claim 23
Independent Claim
94 words
An apparatus in a communication system, comprising: means for establishing, prior to initiation of a handoff, a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; means for initiating the handoff from the serving radio network to a target radio network; and means for sending a message to a target packet data service node identifying the main link.
Claim 24
Independent Claim
146 words
An apparatus in a communication system, comprising: means for initiating handoff from a serving radio network to a target radio network, wherein prior to initiation of the handoff, a first link and a second link are established between a mobile unit and a serving packet data service node via a serving radio network, the first link and the second link corresponding to separate connections between the serving packet data service node and the serving radio network; means for receiving a registration request from the target radio network; means for sending a link initiation message to the mobile unit on the first link via the target radio network, the first link associated with a first service instance; and means for sending the link initiation message to the mobile unit on the second link via the target radio network, the second link associated with a second service instance.
Claim 25
Independent Claim
146 words
An apparatus in a communication system, comprising: means for initiating handoff from a serving radio network to a target radio network, wherein prior to initiation of the handoff, a first link and a second link are established between a mobile unit and a serving packet data service node via a serving radio network, the first link and the second link corresponding to separate connections between the serving packet data service node and the serving radio network; means for receiving a registration request from the target radio network; means for sending a link initiation message to the mobile unit on the first link via the target radio network, the first link associated with a first service instance; and means for sending the link initiation message to the mobile unit on the second link via the target radio network, the second link associated with a second service instance.
Claim 26
Independent Claim
135 words
An apparatus in a communication system, comprising: means for establishing, prior to initiation of a handoff, a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; means for initiating the handoff from the serving radio network to a target radio network, the serving radio network adapted to support multiple service instances, the target radio network adapted to support one service instance; means for terminating the secondary link to the serving radio network; means for sending main link information of the serving radio network to the target radio network; and means for performing the handoff to the target radio network.
Claim 27
Independent Claim
135 words
An apparatus in a communication system, comprising: means for establishing, prior to initiation of a handoff, a main link and a secondary link between a mobile unit and a serving packet data service node via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; means for initiating the handoff from the serving radio network to a target radio network, the serving radio network adapted to support multiple service instances, the target radio network adapted to support one service instance; means for terminating the secondary link to the serving radio network; means for sending main link information of the serving radio network to the target radio network; and means for performing the handoff to the target radio network.
Claim 28
Dependent Claim
80 words
A packet data service node in a communication system, adapted to: establish, prior to initiation of a handoff, a main link and a secondary link with a mobile unit via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; initiate the handoff to a target radio network; and send a message to a target packet data service node identifying the main link.
Claim 29
Dependent Claim
80 words
A packet data service node in a communication system, adapted to: establish, prior to initiation of a handoff, a main link and a secondary link with a mobile unit via a serving radio network, the main link and the secondary link corresponding to separate connections between the serving packet data service node and the serving radio network; initiate the handoff to a target radio network; and send a message to a target packet data service node identifying the main link.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-06-20 | 2008-12-20 | 2009-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-06-20 | 2012-12-20 | 2013-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-06-20 | 2016-12-20 | 2017-06-21 | $7700.00 | Window Closed / Lapsed |