US5537434A — Frequency hopping control channel in a radio comm…

Claim 1

Independent Claim 125 words

A frequency hopping cellular radio communication system comprising: at least one base station and at least one mobile station, the base station using a frequency hop sequence for transmitting at least one first control channel; and means, disposed in said base station, for inserting special synchronization bursts into said frequency hop sequence, such that said special synchronization bursts are transmitted as part of said at least one control channel wherein at least one of said special synchronization bursts comprise a synchronization word and a pointer indicating at least a frequency for at least a next synchronization burst, wherein said at least one mobile station uses said at least one of said special synchronization bursts to initially synchronize to said at least one first control channel.

Claim 2

Dependent Claim 125 words

A frequency hopping cellular radio communication system comprising: at least one base station and at least one mobile station, the base station using a frequency hop sequence for transmitting at least one first control channel; and means, disposed in said base station, for inserting special synchronization bursts into said frequency hop sequence, such that said special synchronization bursts are transmitted as part of said at least one control channel wherein at least one of said special synchronization bursts comprise a synchronization word and a pointer indicating at least a frequency for at least a next synchronization burst, wherein said at least one mobile station uses said at least one of said special synchronization bursts to initially synchronize to said at least one first control channel.

Claim 3

Dependent Claim 23 words

The cellular radio communication system of claim 1, wherein said inserting means inserts said special synchronization bursts periodically into said frequency hop sequence.

Claim 4

Dependent Claim 23 words

The cellular radio communication system of claim 1, wherein said inserting means inserts said special synchronization bursts randomly into said frequency hop sequence.

Claim 5

Dependent Claim 25 words

The cellular radio communication system of claim 1, wherein a blocked sequence of said special synchronization bursts further comprise information defining said frequency hop sequence.

Claim 6

Dependent Claim 25 words

The cellular radio communication system of claim 4, wherein said frequency hop sequence is defined as one of a set of predetermined frequency hop sequences.

Claim 7

Dependent Claim 35 words

The cellular radio communication system of claim 4, further comprising: means, disposed in said mobile station, for receiving said special synchronization bursts and for determining said frequency hop sequence from said frequency hop sequence information.

Claim 8

Dependent Claim 49 words

The cellular radio communication system of claim 1, wherein said at least one base station and at least one mobile station have means for communicating with one another using time-hopping TDMA and first time hop sequences, whereby time slots comprising at least one channel change from frame to frame.

Claim 9

Dependent Claim 39 words

The cellular radio communication system of claim 7, wherein the first time hop sequences are designed such that time slots of said at least first control channel do not always coincide with time slots of any particular traffic channel.

Claim 10

Dependent Claim 72 words

The cellular radio communication system of claim 7, further comprising: at least one second base station in an adjacent cell having means for using second time hop sequences for transmitting at least one second control channel, wherein said second time hop sequences are designed such that time slots of said at least one second control channel do not always coincide with time slots of any traffic channel of said first base station.

Claim 11

Dependent Claim 16 words

The cellular radio communication system of claim 7, wherein said control channels do not time hop.

Claim 12

Dependent Claim 16 words

The cellular radio communication system of claim 7, wherein said traffic channels do not time hop.

Claim 13

Dependent Claim 36 words

The cellular radio communication system of claim 1, wherein frequency hop sequences used at said at least one base station are orthogonal to each other but pseudo-random relative to hop sequences used at other base stations.

Claim 14

Dependent Claim 39 words

The cellular radio communication system of claim 7, wherein combined frequency and time hop sequences used at said at least one base station are orthogonal to each other but pseudo-random relative to hop sequences used at other base stations.

Claim 15

Dependent Claim 42 words

The cellular radio communication system of claim 7, wherein said first time hop sequences are determined such that a spacing between any two time slots in adjacent frames used by a traffic channel is at least a predetermined number of time slots.

Claim 16

Dependent Claim 73 words

A frequency hopping cellular radio communication system comprising: at least one first base station and at least one mobile station, the base station using a frequency hop sequence for transmitting at least one first control channel; and means, disposed in said base station, for inserting special synchronization bursts into said frequency hop sequence, wherein at least one of said special synchronization bursts comprise a synchronization word and information defining said frequency hop sequence.

Claim 17

Dependent Claim 73 words

A frequency hopping cellular radio communication system comprising: at least one first base station and at least one mobile station, the base station using a frequency hop sequence for transmitting at least one first control channel; and means, disposed in said base station, for inserting special synchronization bursts into said frequency hop sequence, wherein at least one of said special synchronization bursts comprise a synchronization word and information defining said frequency hop sequence.

Claim 18

Dependent Claim 23 words

The cellular radio communication system of claim 15, wherein said inserting means inserts said special synchronization bursts periodically into said frequency hop sequence.

Claim 19

Dependent Claim 23 words

The cellular radio communication system of claim 15, wherein said inserting means inserts said special synchronization bursts randomly into said frequency hop sequence.

Claim 20

Dependent Claim 25 words

The cellular radio communication system of claim 15, wherein said frequency hop sequence is defined as one of a set of predetermined frequency hop sequences.

Claim 21

Dependent Claim 31 words

The cellular radio communication system of claim 15, wherein said special synchronization bursts further comprise at least one pointer indicating at least a frequency for at least a next synchronization burst.

Claim 22

Dependent Claim 35 words

The cellular radio communication system of claim 15, further comprising: means, disposed in said mobile station, for receiving said special synchronization bursts and for determining said frequency hop sequence from said frequency hop sequence information.

Claim 23

Dependent Claim 49 words

The cellular radio communication system of claim 15, wherein said at least one base station and at least one mobile station have means for communicating with one another using time-hopping TDMA and first time hop sequences, whereby time slots comprising at least one channel change from frame to frame.

Claim 24

Dependent Claim 37 words

The cellular radio communication system of claim 21, wherein said first time hop sequences are designed such that said time slots of said control channel do not always coincide with time slots of any particular traffic channel.

Claim 25

Dependent Claim 71 words

The cellular radio communication system of claim 21, also comprising: at least one second base station in an adjacent cell having means for using a second time hop sequence for transmitting at least one second control channel, wherein said hop sequences are designed such that time slots of said control channel do not always coincide with time slots of any particular traffic channel of said at least one first base station.

Claim 26

Dependent Claim 16 words

The cellular radio communication system of claim 21, wherein said control channels do not time hop.

Claim 27

Dependent Claim 16 words

The cellular radio communication system of claim 21, wherein said traffic channels do not time hop.

Claim 28

Dependent Claim 36 words

The cellular radio communication system of claim 15, wherein frequency hop sequences used said at least one first base station are orthogonal to each other but pseudo-random to frequency hop sequences used at other base stations.

Claim 29

Dependent Claim 39 words

The cellular radio communication system of claim 21, wherein combined frequency and time hop sequences used said at least one first base station are orthogonal to each other but pseudo-random to frequency hop sequences used at other base stations.

Claim 30

Dependent Claim 43 words

The cellular radio communication system of claim 21, wherein said first time hop sequences are determined such that a spacing between any two time slots in adjacent frames used by any particular traffic channel is at least a predetermined number of time slots.

Claim 31

Dependent Claim 76 words

A frequency hopping cellular radio communication system comprising: at least one base station and at least one mobile station, the base station having means for using a frequency hop sequence for transmitting at least one control channel; and means, disposed in said base station, for transmitting using Code Division Multiple Access overlaid on at least one frequency used by said base station, special synchronization information comprising a synchronization word and information defining said frequency hop sequence.

Claim 32

Dependent Claim 76 words

A frequency hopping cellular radio communication system comprising: at least one base station and at least one mobile station, the base station having means for using a frequency hop sequence for transmitting at least one control channel; and means, disposed in said base station, for transmitting using Code Division Multiple Access overlaid on at least one frequency used by said base station, special synchronization information comprising a synchronization word and information defining said frequency hop sequence.

Claim 33

Dependent Claim 25 words

The cellular radio communication system of claim 29, wherein said frequency hop sequence is defined as one of a set of predetermined frequency hop sequences.

Claim 34

Dependent Claim 35 words

The cellular radio communication system of claim 29, further comprising: means, disposed in said mobile station, for receiving said special synchronization information and for determining said frequency hop sequence from said frequency hop sequence information.

Claim 35

Dependent Claim 51 words

The cellular radio communication system of claim 29, wherein said at least one base station and said at least one mobile station also have means for communicating with one another using time-hopping TDMA and first time hop sequences, whereby time slots comprising at least one channel change from frame to frame.

Claim 36

Dependent Claim 40 words

The cellular radio communication system of claim 32, wherein said first time hop sequences are means for controlling transmission such that said time slots of said control channel do not always coincide with time slots of any particular traffic channel.

Claim 37

Dependent Claim 77 words

The cellular radio communication system of claim 32, also comprising: at least one second base station in an adjacent cell having means for using a second time hop sequence for transmitting at least one second control channel, wherein said second time hop sequences are designed such that time slots of said at least one second control channel do not always coincide with time slots of any particular traffic channel of said at least one first base station.

Claim 38

Dependent Claim 16 words

The cellular radio communication system of claim 32, wherein said control channels do not time hop.

Claim 39

Dependent Claim 16 words

The cellular radio communication system of claims 32, wherein said traffic channels do not time hop.

Claim 40

Dependent Claim 37 words

The cellular radio communication system of claim 29, wherein frequency hop sequences used at said at least one first base station are orthogonal to each other but pseudo-random to frequency hop sequences used at other base stations.

Claim 41

Dependent Claim 40 words

The cellular radio communication system of claim 32, wherein combined frequency and time hop sequences used at said at least one first base station are orthogonal to each other but pseudo-random to frequency hop sequences used at other base stations.

Claim 42

Dependent Claim 43 words

The cellular radio communication system of claim 34, wherein said first time hop sequences are determined such that the spacing between any two time slots in adjacent frames used by any particular traffic channel is at least a predetermined number of time slots.

Claim 43

Dependent Claim 108 words

A Time Division Multiple Access cellular radio communication system comprising: at least one base station having means for transmitting using at least one control channel; means, disposed in said at least one base station, for communicating with at least one mobile station using at least one traffic channel; and means for using time slot hopping, wherein time slots comprising at least one of said control channel and said traffic channel change from frame to frame, and including time hop sequence means for controlling hopping of time slots of said at least one control channel to not always coincide with time slots of said at least one traffic channel.

Claim 44

Dependent Claim 108 words

A Time Division Multiple Access cellular radio communication system comprising: at least one base station having means for transmitting using at least one control channel; means, disposed in said at least one base station, for communicating with at least one mobile station using at least one traffic channel; and means for using time slot hopping, wherein time slots comprising at least one of said control channel and said traffic channel change from frame to frame, and including time hop sequence means for controlling hopping of time slots of said at least one control channel to not always coincide with time slots of said at least one traffic channel.

Claim 45

Dependent Claim 19 words

The cellular radio communication system of claim 40, wherein said at least one control channel does not time hop.

Claim 46

Dependent Claim 19 words

The cellular radio communication system of claim 40, wherein said at least one traffic channel does not time hop.

Claim 47

Dependent Claim 41 words

The cellular radio communication system of claim 40, wherein time hop sequences are determined such that a spacing between any two time slots in adjacent frames used by any particular traffic channel is at least a predetermined number of time slots.

Claim 48

Dependent Claim 29 words

The cellular communication system of claim 40, also comprising means for frequency hopping at least one of said at least one control channel and at least one traffic channel.

Claim 49

Dependent Claim 42 words

The cellular radio communication system of claim 44, wherein frequency hop sequences for said at least one traffic channel at said at least one base station are orthogonal to each other but pseudo-random to frequency hop sequences used at other base stations.

Claim 50

Dependent Claim 49 words

The cellular radio communication system of claim 40, wherein information of time hop sequences for adjacent base stations control channels are transmitted to said at least one mobile station from said at least one base station using one of said at least one traffic channel and said control channel.

Claim 51

Dependent Claim 23 words

The cellular radio communication system of claim 4, wherein the information defining the frequency hop sequence is repeated in a subsequent blocked sequence.

Claim 52

Dependent Claim 38 words

The cellular radio communication system of claim 15, wherein a blocked sequence of said special synchronization bursts comprises information defining the frequency hop sequence, said information being repeated in a subsequent blocked sequence of said special synchronization bursts.

Claim 53

Dependent Claim 42 words

The cellular radio communication system of claim 40, wherein time hop sequences for said at least one traffic channel at said at least one base station are orthogonal to each other and pseudo-random to time hop sequences used at other base stations.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1999-07-16	2000-01-15	2000-07-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2003-07-16	2004-01-15	2004-07-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2007-07-16	2008-01-15	2008-07-16	$7700.00	Window Closed / Lapsed

Frequency hopping control channel in a radio communication system

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