Patent US6771962B2 successfully refreshed from Google Patents.
US6771962B2
Expired / Lapsed
US
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Apparatus, and an associated method, by which to provide temporary identifiers to a mobile node involved in a communication handover
Assignee: Nokia Oyj
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Filing: 2001-03-30
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Granted: 2004-08-03
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Expires: 2021-03-30
Abstract
Abstract Apparatus, and an associated method, for a mobile communication system in which handovers of communications are effectuated between access points of the communication system as a mobile node travels there through. A manner is provided by which to perform handover evaluation functions more efficiently by performing at least some of the handover evaluations at the access point to which a mobile node is attached. And, a manner is provided by which to provide care-of-addresses formed of temporary identifiers to temporarily identify a mobile node to permit the routing of packet data thereto during a communication session.
Inventors
- 👤 Yousuf Saifullah
- 👤 Basavaraj Patil
- 👤 Shavantha Kularatna
- 👤 Rene Purnadi
- 👤 Stefano Faccin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:11
CPC Classifications
H; H04; H04L; H04L61/00; H04L61/50; H04L61/5084; H04W; H04W36/00; H04W36/08; H04W36/087; H04W60/00; H04W60/005; H04W36/0005; H04W36/0011; H04W36/0019; H04W80/00; H04W80/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
240 words
In a wireless communication system having a mobile node operable to communicate by way of a network infrastructure with another communication node, the mobile node movable between a first position and at least a second position, when positioned at the first position, the mobile node is operable to communicate by way of a first subnetwork defined by a first radio access point of the network infrastructure, and when positioned at the at least the second position, communication handover is effectuated such that the mobile node is operable to communicate by way of a second subnetwork defined by a second radio access point, an improvement of apparatus for providing a temporary identifier to the mobile node to identify the mobile node, thereby to permit routing of data packets thereto, said apparatus comprising: a detector having at least a portion embodied at the first radio access point and coupled to detect indications of a decision to handover communications of the mobile node between the first and second subnetworks; a radio-access-point cache positioned at the first radio access point, said radio-access-point cache for cacheing temporary identifiers thereat; and an assignor having at least a portion embodied at the first radio-access-point and coupled to said detector, said assignor for assigning the a selected temporary identifier from the radio-access-point cache to the mobile node subsequent to detection by said detector of when the handover is to be effectuated and prior to effectuation of the handover.
Claim 2
Dependent Claim
240 words
In a wireless communication system having a mobile node operable to communicate by way of a network infrastructure with another communication node, the mobile node movable between a first position and at least a second position, when positioned at the first position, the mobile node is operable to communicate by way of a first subnetwork defined by a first radio access point of the network infrastructure, and when positioned at the at least the second position, communication handover is effectuated such that the mobile node is operable to communicate by way of a second subnetwork defined by a second radio access point, an improvement of apparatus for providing a temporary identifier to the mobile node to identify the mobile node, thereby to permit routing of data packets thereto, said apparatus comprising: a detector having at least a portion embodied at the first radio access point and coupled to detect indications of a decision to handover communications of the mobile node between the first and second subnetworks; a radio-access-point cache positioned at the first radio access point, said radio-access-point cache for cacheing temporary identifiers thereat; and an assignor having at least a portion embodied at the first radio-access-point and coupled to said detector, said assignor for assigning the a selected temporary identifier from the radio-access-point cache to the mobile node subsequent to detection by said detector of when the handover is to be effectuated and prior to effectuation of the handover.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 wherein the indications of the decision to handover communications are generated, at least in part, responsive to initiation by the mobile node.
Claim 4
Dependent Claim
44 words
The apparatus of claim 1 wherein the network infrastructure comprises a radio access network and a core network, the radio access network having a network-infrastructure cache device of caching temporary identifiers, at least a portion of said assignor located at the network-infrastructure cache device.
Claim 5
Dependent Claim
55 words
The apparatus of claim 3 wherein the temporary identifiers are initially stored at the portion of said assignor located at the network-infrastructure cache device and at least some of the temporary identifiers are at least copied to the radio-access-point cache, accessible therefrom by the portion of the said assignor located at the second cache device.
Claim 6
Dependent Claim
39 words
The apparatus of claim 4 wherein each subnetwork comprises a portion of the radio access network, each subnetwork including a radio-access-point, and wherein said radio-access-point cache device comprises radio-access-point cache device portions embodied at each base transceiver station radio-access-point.
Claim 7
Dependent Claim
34 words
The apparatus of claim 5 wherein the radio access network includes a server and wherein the network-infrastructure cache device at which the portion of the said assignor is located is embodied at the server.
Claim 8
Dependent Claim
42 words
The apparatus of claim 1 wherein one of the first and at least second subnetworks forms an active subnetwork and wherein the decision to handover communications of the mobile node between the first and second subnetworks is made at the active network.
Claim 9
Dependent Claim
80 words
The apparatus of claim 7 wherein the first and at least second subnetworks are intercoupled, wherein one of the fist and at least second subnetworks forms a target subnetwork to which the handover of communications is to be effectuated, wherein indications of communication conditions at the target subnetwork are provided to the active subnetwork, and wherein the decision to handover communications made at the active subnetwork is further responsive to the indications of the communication conditions at the target subnetwork.
Claim 10
Dependent Claim
89 words
The apparatus of claim 7 wherein the network infrastructure comprises a radio access network and a core network coupled thereto, wherein the first and at least second subnetwork forms portions of the radio access networks one of the first and at least second subnetworks forming an active subnetwork, wherein the mobile node provides indications of communication conditions at the active subnetwork, and wherein the indications of the decision to handover communications are generated, at least in part, responsive to the indications of the communication conditions at the active subnetwork.
Claim 11
Dependent Claim
62 words
The apparatus of claim 9 wherein at least a portion of said assignor is located at the active subnetwork and wherein, further responsive to the indications of the communication conditions provided by the mobile node, a request is made for indications of communication conditions at a target subnetwork, the target subnetwork formed of another of the first and at least second subnetworks.
Claim 12
Dependent Claim
50 words
The apparatus of claim 10 wherein indications of the communication conditions at the target subnetwork are provided to the portion of the assignor located at the active subnetwork, and wherein the indications of the decision to handover communications are generated, in part, responsive to the indications of the communication conditions.
Claim 13
Dependent Claim
218 words
In a method for communicating in a wireless communication system having a mobile node operable to communicate by way of a network infrastructure with another communication ode, the mobile node movable between a first positioned and at least a second position, when positioned at the first position, the mobile node is operable to communicate by way of a first subnetwork defined by a first radio-access-point of the network infrastructure, and when positioned at the at least the second position, communication handover is effectuated such that the mobile node is operable to communicate by way of a second subnetwork defined by a second radio-access-point of the network infrastructure, an improvement of a method for providing a selected temporary identifier to the mobile node to identify the mobile node, thereby to permit routing of data packets thereto, said method comprising: cacheing, at the first radio-access-point, temporary identifiers usable to identify the mobile node; detecting at the first radio access point when a decision to handover communications of the mobile node between the first and second subnetworks is made; and assigning the selected temporary identifier, selected from the temporary identifiers cached during said operation of cacheing, to the mobile node subsequent to detection by said detector of when the handover is to be effectuated and prior to effectuation of the handover.
Claim 14
Dependent Claim
218 words
In a method for communicating in a wireless communication system having a mobile node operable to communicate by way of a network infrastructure with another communication ode, the mobile node movable between a first positioned and at least a second position, when positioned at the first position, the mobile node is operable to communicate by way of a first subnetwork defined by a first radio-access-point of the network infrastructure, and when positioned at the at least the second position, communication handover is effectuated such that the mobile node is operable to communicate by way of a second subnetwork defined by a second radio-access-point of the network infrastructure, an improvement of a method for providing a selected temporary identifier to the mobile node to identify the mobile node, thereby to permit routing of data packets thereto, said method comprising: cacheing, at the first radio-access-point, temporary identifiers usable to identify the mobile node; detecting at the first radio access point when a decision to handover communications of the mobile node between the first and second subnetworks is made; and assigning the selected temporary identifier, selected from the temporary identifiers cached during said operation of cacheing, to the mobile node subsequent to detection by said detector of when the handover is to be effectuated and prior to effectuation of the handover.
Claim 15
Dependent Claim
26 words
The method of claim 12 further comprising the operation, prior to said operation of detecting of: requesting, by the mobile node, the handover of the communications.
Claim 16
Dependent Claim
32 words
The method of claim 13 wherein the selected temporary identifier assigned during said operation of assigning is retrieved from a cache at which temporary identifiers are cached during said operation of cacheing.
Claim 17
Dependent Claim
35 words
The method of claim 14 wherein the network infrastructure comprises a radio access network and a core network and wherein said operation of assigning is performed at the first radio-access-point of the radio access network.
Claim 18
Dependent Claim
32 words
The method of claim 12 wherein the first subnetwork forms an active subnetwork and wherein the decision, detected during said operation of detecting, to handover communications is made at the active subnetwork.
Claim 19
Dependent Claim
26 words
The method of claim 16 wherein the decision, detected during said operation of detecting, is further responsive to indications of communication conditions at the target subnetwork.
Claim 20
Dependent Claim
26 words
The method of claim 17 further comprising the additional operation of providing the indications of the communication conditions at the target subnetworks to the active network.
Claim 21
Dependent Claim
37 words
The method of claim 18 , wherein the active subnetwork and the target subnetwork are intercoupled and wherein the indications of the communication conditions at the target subnetwork provided to the active subnetwork are provided directly thereto.
References Cited (Backward Citations)
US4833701A
Cited
EP0446318B1
Cited
US5408683A
Cited
US5457680A
Cited
US6212380B1
Cited
US6058311A
Cited
US6073016A
Cited
EP0859531A2
Cited
US6397065B1
Cited
US6172986B1
Cited
US6553227B1
Cited
US6385451B1
Cited
US6577874B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-08-03 | 2008-02-02 | 2008-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-03 | 2012-02-02 | 2012-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-03 | 2016-02-02 | 2016-08-03 | $7700.00 | Window Closed / Lapsed |