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Patent US6944146B1 successfully refreshed from Google Patents.
US6944146B1
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Communications of signaling in a mobile communications system with reduced interference
Assignee: Apple Inc
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Filing: 1999-08-04
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Granted: 2005-09-13
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Expires: 2019-08-04
Abstract
Abstract A method and apparatus for use in a mobile communications system having a plurality of cell segments includes allocating a plurality of channels to perform communications and defining a plurality of time groups. A channel reuse pattern is provided that is based on the plurality of channel frequencies and the plurality of time groups. Control channels are carried in a different time slot of a frame in each time group. Predetermined time slots are allocated as guard periods to reduce likelihood of interference of signaling due to overlap of time slots in neighboring cell segments. In one arrangement, three channel frequencies are allocated. Further, three or four time groups are defined to provide an effective 3/9 or 4/12 channel reuse pattern. In each time group, control channels are carried in odd time slots of a time-division multiple access (TDMA) frame. The even time slots are employed as guard periods to reduce likelihood of interference caused by overlapping time slots, which may occur in relatively large cells because of propagation delays in communications between mobile units and base stations.
Inventors
- 👤 Peter A. Barany
- 👤 Shavantha Kularatna
- 👤 Eric N. Johnson
- 👤 Shamim Akbar Rahman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:20
CPC Classifications
H; H04; H04W; H04W72/00; H04W72/20
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
103 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein transmitting the control signaling includes transmitting the control signaling in every other time slot of frames.
Claim 2
Independent Claim
103 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein transmitting the control signaling includes transmitting the control signaling in every other time slot of frames.
Claim 3
Independent Claim
104 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein communicating the control and traffic signaling includes communicating the control signaling in odd time slots of frames.
Claim 4
Independent Claim
104 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein communicating the control and traffic signaling includes communicating the control signaling in odd time slots of frames.
Claim 5
Independent Claim
128 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein time frames includes time slots 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 , and wherein the transmitting includes transmitting the control signaling in time slots 1 , 3 , and 5 .
Claim 6
Independent Claim
128 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein time frames includes time slots 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 , and wherein the transmitting includes transmitting the control signaling in time slots 1 , 3 , and 5 .
Claim 7
Independent Claim
130 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein time frames includes time slots 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 , and wherein the transmitting includes transmitting the control signaling in time slots 1 , 3 , 5 , and 7 .
Claim 8
Independent Claim
130 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein time frames includes time slots 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 , and wherein the transmitting includes transmitting the control signaling in time slots 1 , 3 , 5 , and 7 .
Claim 9
Independent Claim
103 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein transmitting the control signaling includes transmitting one of a synchronization burst and a frequency correction burst.
Claim 10
Independent Claim
103 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: communicating control and traffic signaling in a frame having a plurality of time slots in each cell segment, the time slots being time synchronized among the cell segments; and transmitting control signaling in time slots adjacent time slots allocated as guard periods to protect the control signaling in a time slot of a first cell segment from interference by traffic signaling in another time slot of a neighboring cell segment, wherein transmitting the control signaling includes transmitting one of a synchronization burst and a frequency correction burst.
Claim 11
Independent Claim
113 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: defining a plurality of channels and a frame having a plurality of time slots; providing a channel reuse pattern that is based on a plurality of channel frequencies and a plurality of time groups, wherein signaling is transmitted in different time slots of the frame in corresponding time groups; providing predetermined time slots as guard periods to reduce likelihood of interference of signaling due to overlap of time slots in neighboring cell segments, wherein the defining includes defining a frame having eight time slots; and allocating control signaling to be carried in odd time slots of frames.
Claim 12
Independent Claim
113 words
A method for use in a mobile communications system having a plurality of cell segments, comprising: defining a plurality of channels and a frame having a plurality of time slots; providing a channel reuse pattern that is based on a plurality of channel frequencies and a plurality of time groups, wherein signaling is transmitted in different time slots of the frame in corresponding time groups; providing predetermined time slots as guard periods to reduce likelihood of interference of signaling due to overlap of time slots in neighboring cell segments, wherein the defining includes defining a frame having eight time slots; and allocating control signaling to be carried in odd time slots of frames.
Claim 13
Dependent Claim
20 words
The method of claim 6 , wherein providing time slots as guard periods includes the time slots to be idle.
Claim 14
Independent Claim
86 words
A method for use in a mobile communications system, comprising: carrying control signaling in a multiframe that includes a plurality of frames, each frame including a plurality of time slots; communicating control signaling in predetermined time slots of predetermined frames; and communicating idle periods in time slots allocated as guard periods adjacent the predetermined time slots of the predetermined frames, wherein each frame includes eight time slots, and wherein communicating the control signaling includes communicating the control signaling in odd time slots of the predetermined frames.
Claim 15
Independent Claim
86 words
A method for use in a mobile communications system, comprising: carrying control signaling in a multiframe that includes a plurality of frames, each frame including a plurality of time slots; communicating control signaling in predetermined time slots of predetermined frames; and communicating idle periods in time slots allocated as guard periods adjacent the predetermined time slots of the predetermined frames, wherein each frame includes eight time slots, and wherein communicating the control signaling includes communicating the control signaling in odd time slots of the predetermined frames.
Claim 16
Dependent Claim
24 words
The method of claim 8 , wherein communicating the idle periods includes communicating the idle periods in even time slots of the predetermined frames.
Claim 17
Dependent Claim
70 words
The method of claim 9 , wherein each frame includes time slots 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 , and wherein communicating the control signaling includes communicating the control signaling in time slots 1 , 3 , and 5 , and communicating the idle periods includes communicating the idle periods in time slots 0 , 2 , and 4 .
Claim 18
Dependent Claim
75 words
The method of claim 9 , wherein each frame includes time slots 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 , and wherein communicating the control signaling includes communicating the control signaling in time slots 1 , 3 , 5 , and 7 , and wherein communicating the idle periods includes communicating the idle periods in time slots 0 , 2 , 4 , and 6 .
Claim 19
Dependent Claim
22 words
The method of claim 8 , further comprising communicating traffic in at least some of the frames other than the predetermined frames.
References Cited (Backward Citations)
US4866710A
Cited
US5093928A
Cited
US5396539A
Cited
US6430417B1
Cited
US5570352A
Cited
WO1995012936A1
Cited
US5901144A
Cited
US5805633A
Cited
US6038455A
Cited
US5818829A
Cited
US5999818A
Cited
US5946624A
Cited
US5974323A
Cited
US6069885A
Cited
US6011786A
Cited
US6272117B1
Cited
US6497599B1
Cited
US6438115B1
Cited
US6493539B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-09-12 | 2009-03-14 | 2009-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-09-12 | 2013-03-14 | 2013-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-09-12 | 2017-03-14 | 2017-09-13 | $7700.00 | Window Closed / Lapsed |