US6122270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communications system and a method therefor
Assignee: Google Technology Holdings LLC
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Filing: 1996-01-25
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Granted: 2000-09-19
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Expires: 2016-01-25
Abstract
Abstract An apparatus and method enabling a mobile station to transfer its communications between two dissimilar communications systems, for example, between a first communications system having a time continuous structure, such as a CDMA system, and an alternate communications system having a time discontinuous structure, such as a TDMA system. In one embodiment, the mobile station initiates a time-compressed mode of operation of the first system in which, for a portion of each frame, transmission is disabled, accesses the second system during the disabled periods and specifies to the first system frame structure information of the second system. The first system adjusts the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the widths and positions of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Inventors
- 👤 Nicholas William Whinnett
- 👤 William Neil Robinson
- 👤 Joanthan Alastair Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/28; H04W52/283; H04W36/00; H04W36/0005; H04W36/0055; H04W36/0061; H04W52/288; H04W36/0066; H04W36/0083; H04W36/0085; H04W36/0088
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
157 words
A communications apparatus comprising a first communications system having a time continuous frame structure and a mobile station for communication therewith, wherein the mobile station is able to communicate with a second communication system having a time discontinuous frame structure, the apparatus further including: means in the mobile station for initiating a time compressed mode of operation of the first system in which for a portion of each frame, transmission is disabled; means in the mobile station for accessing, during the disabled periods, the second system; means in the mobile station for specifying to the first system frame structure information of the second system; and means in the first system for adjusting the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the width and position of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Claim 2
Dependent Claim
157 words
A communications apparatus comprising a first communications system having a time continuous frame structure and a mobile station for communication therewith, wherein the mobile station is able to communicate with a second communication system having a time discontinuous frame structure, the apparatus further including: means in the mobile station for initiating a time compressed mode of operation of the first system in which for a portion of each frame, transmission is disabled; means in the mobile station for accessing, during the disabled periods, the second system; means in the mobile station for specifying to the first system frame structure information of the second system; and means in the first system for adjusting the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the width and position of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Claim 3
Dependent Claim
22 words
The communications apparatus of claim 1 wherein the first system is a CDMA system and the second system is a TDMA system.
Claim 4
Dependent Claim
34 words
The communications apparatus of claim 1 wherein the frame structure information includes a position of the first downlink slot of the second system in the relation to the frame structure of the first system.
Claim 5
Dependent Claim
31 words
The communications apparatus of claim 1 wherein the mobile station includes means for informing the first system of the number of time slots `N` per frame during which communications will occur.
Claim 6
Dependent Claim
17 words
The communications apparatus of claim 1 further comprising means for processing the `N` highest energy received time-slots.
Claim 7
Dependent Claim
35 words
The communications apparatus of claim 1 further comprising means for arranging adjustment of power transmitted by the mobile station and the first system, by the mobile station, to a power level inversely proportional to `N`.
Claim 8
Independent Claim
141 words
A method of facilitating handing-off a mobile station between a first communications system having a time continuous frame structure and a second communications system having a time discontinuous frame structure, the method comprising the steps of: initiating a time compressed mode of operation of the first system by the mobile station in which for a portion of each frame, transmission is disabled; accessing in the mobile station during the disabled periods, the second system; specifying to the first system by the mobile station, frame structure information of the second system; and adjusting in the first system, the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the widths and position of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Claim 9
Independent Claim
141 words
A method of facilitating handing-off a mobile station between a first communications system having a time continuous frame structure and a second communications system having a time discontinuous frame structure, the method comprising the steps of: initiating a time compressed mode of operation of the first system by the mobile station in which for a portion of each frame, transmission is disabled; accessing in the mobile station during the disabled periods, the second system; specifying to the first system by the mobile station, frame structure information of the second system; and adjusting in the first system, the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the widths and position of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Claim 10
Dependent Claim
32 words
The method of claim 7 including the further step of by the mobile station informing the first system of the number of time slots `N` per frame during which communications will occur.
Claim 11
Dependent Claim
21 words
The method of claim 7 wherein the first system is a CDMA system and the second system is a TDMA system.
Claim 12
Dependent Claim
33 words
The method of claim 7 wherein the frame structure information includes a position of the first downlink slot of the second system in the relation to the frame structure of the first system.
Claim 13
Dependent Claim
15 words
The method of claim 7 further comprising processing the `N` highest energy received time slots.
Claim 14
Dependent Claim
32 words
The method of claim 7 further comprising arranging adjustment of power transmitted by the mobile station and the first system, by the mobile station, to a power level inversely proportional to `N`.
Claim 15
Dependent Claim
173 words
A communications apparatus comprising a first communications system having a time continuous frame structure and a mobile station for communication therewith, wherein the mobile station is able to communicate with a second communication system having a time discontinuous frame structure, the apparatus further including: a time compressed operation mode initiator in the mobile station operable to initiate a time compressed mode of operation of the first system in which for a portion of each frame, transmission is disabled; an access unit in the mobile station operable to access, during the disabled periods, the second system; a frame structure information unit in the mobile station operable to specify to the first system frame structure information of the second system; and an adjuster in the first system operable to adjust the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the width and position of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Claim 16
Dependent Claim
173 words
A communications apparatus comprising a first communications system having a time continuous frame structure and a mobile station for communication therewith, wherein the mobile station is able to communicate with a second communication system having a time discontinuous frame structure, the apparatus further including: a time compressed operation mode initiator in the mobile station operable to initiate a time compressed mode of operation of the first system in which for a portion of each frame, transmission is disabled; an access unit in the mobile station operable to access, during the disabled periods, the second system; a frame structure information unit in the mobile station operable to specify to the first system frame structure information of the second system; and an adjuster in the first system operable to adjust the time-compressed mode of operation so that communication with the mobile station occurs during `N` time slots of each frame, the width and position of each slot within each frame being set in order to avoid contention with communications to and from the second system.
Claim 17
Dependent Claim
22 words
The communications apparatus of claim 13 wherein the first system is a CDMA system and the second system is a TDMA system.
Claim 18
Dependent Claim
34 words
The communications apparatus of claim 13 wherein the frame structure information includes a position of the first downlink slot of the second system in the relation to the frame structure of the first system.
Claim 19
Dependent Claim
37 words
The communications apparatus of claim 13 further including a time slot information unit in the mobile station operable to inform the first system of the number of time slots `N` per frame during which communications will occur.
Claim 20
Dependent Claim
19 words
The communications apparatus of claim 13 further comprising a processor operable to process the `N` highest energy received time-slots.
Claim 21
Dependent Claim
39 words
The communications apparatus of claim 13 further comprising a power level adjuster operable to arrange adjustment of power transmitted by the mobile station and the first system, by the mobile station, to a power level inversely proportional to `N`.
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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) | 2003-09-19 | 2004-03-20 | 2004-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-19 | 2008-03-20 | 2008-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-19 | 2012-03-20 | 2012-09-19 | $7700.00 | Window Closed / Lapsed |