US6549779B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for improving the performance of inter-systems handovers
Assignee: Lenovo Innovations Ltd Hong Kong
•
Filing: 2000-01-17
•
Granted: 2003-04-15
•
Expires: 2020-01-17
Abstract
Abstract A preferred embodiment of an invention is disclosed, whereby the size of certain (e.g., S-RNTI and scrambling code number) Information Elements (IEs) in the UTRAN RRC “HANDOVER TO UTRAN COMMAND” message can be reduced, by reserving a subrange of the IE parameter values for exclusive use by the User Equipment (UE) which is performing an inter-Radio Access Technology (RAT) handover to a UTRAN. For example, the lowest values of scrambling code number or S-RNTI number can be reserved for initial assignment to a UE performing a handover from one system network to the UTRAN. Upon completion of the handover procedure, the UTRAN can assign another scrambling code number or S-RNTI number to that UE. Consequently, by significantly reducing the size of the IEs used in the HANDOVER TO UTRAN COMMAND message, additional (e.g., optional) parameters may also be used in the same message.
Inventors
- 👤 Walter Müller
- 👤 Pontus Wallentin
- 👤 Himke van der Velde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:58
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/0005; H04W36/0055; H04W36/0066
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
78 words
A method for improving the performance of a handover procedure from a first system network to a UTRAN, comprising: generating a handover command message for initiating a handover from said first system network to said UTRAN; reducing a size of at least one information element in said handover command message; adding at least one optional parameter to said handover command message; and transferring said handover command message to a user equipment for said performance of said handover procedure.
Claim 2
Independent Claim
78 words
A method for improving the performance of a handover procedure from a first system network to a UTRAN, comprising: generating a handover command message for initiating a handover from said first system network to said UTRAN; reducing a size of at least one information element in said handover command message; adding at least one optional parameter to said handover command message; and transferring said handover command message to a user equipment for said performance of said handover procedure.
Claim 3
Dependent Claim
15 words
The method of claim 1 , wherein said first system network comprises a GSM network.
Claim 4
Dependent Claim
18 words
The method of claim 1 , wherein said at least one information element comprises an S-RNTI information element.
Claim 5
Dependent Claim
20 words
The method of claim 1 , wherein said at least one information element comprises a scrambling code number information element.
Claim 6
Dependent Claim
18 words
The method of claim 1 , wherein said handover command message comprises a HANDOVER TO UTRAN COMMAND message.
Claim 7
Dependent Claim
21 words
The method of claim 1 , wherein said transferring comprises transmitting said handover command message over a GSM radio air interface.
Claim 8
Independent Claim
92 words
A system for improving the performance of a handover procedure, comprising: a first system network; a UTRAN; and a user equipment, said system further comprising: means for generating a handover command message for initiating a handover from said first system network to said UTRAN; means for reducing a size of at least one information element in said handover command message; means for adding at least one optional parameter to said handover command message; and means for transferring said handover command message to said user equipment for said performance of said handover procedure.
Claim 9
Independent Claim
92 words
A system for improving the performance of a handover procedure, comprising: a first system network; a UTRAN; and a user equipment, said system further comprising: means for generating a handover command message for initiating a handover from said first system network to said UTRAN; means for reducing a size of at least one information element in said handover command message; means for adding at least one optional parameter to said handover command message; and means for transferring said handover command message to said user equipment for said performance of said handover procedure.
Claim 10
Dependent Claim
15 words
The system of claim 7 , wherein said first system network comprises a GSM network.
Claim 11
Dependent Claim
18 words
The system of claim 7 , wherein said at least one information element comprises an S-RNTI information element.
Claim 12
Dependent Claim
20 words
The system of claim 7 , wherein said at least one information element comprises a scrambling code number information element.
Claim 13
Dependent Claim
18 words
The system of claim 7 , wherein said handover command message comprises a HANDOVER TO UTRAN COMMAND message.
Claim 14
Dependent Claim
25 words
The system of claim 7 , wherein said means for transferring comprises means for transmitting said handover command message over a GSM radio air interface.
Claim 15
Independent Claim
98 words
A method for transmitting a handover to UTRAN command from a GSM network to a user equipment, said method comprising: reducing a size of said handover to UTRAN command into a reduced size handover to UTRAN command such that a S-RNTI or scrambling code number within said reduced size handover to UTRAN command is reduced by a predetermined number of bits; and incorporating at least one optional parameter into said reduced size handover to UTRAN command; and transmitting said reduced size handover to UTRAN command from said GSM to said user equipment within a non-segmented air interface message.
Claim 16
Independent Claim
98 words
A method for transmitting a handover to UTRAN command from a GSM network to a user equipment, said method comprising: reducing a size of said handover to UTRAN command into a reduced size handover to UTRAN command such that a S-RNTI or scrambling code number within said reduced size handover to UTRAN command is reduced by a predetermined number of bits; and incorporating at least one optional parameter into said reduced size handover to UTRAN command; and transmitting said reduced size handover to UTRAN command from said GSM to said user equipment within a non-segmented air interface message.
Claim 17
Dependent Claim
27 words
The method of claim 13 , wherein said at least one optional parameter to one of a downlink DPCH compressed mode information and a SSDT indicator information.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-04-14 | 2006-10-14 | 2007-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-14 | 2010-10-14 | 2011-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-14 | 2014-10-14 | 2015-04-15 | $7700.00 | Window Closed / Lapsed |