Patent US6697640B1 successfully refreshed from Google Patents.
US6697640B1
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US
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Method and apparatus for directional radio communication
Assignee: Nokia Oyj
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Filing: 2000-07-10
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Granted: 2004-02-24
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Expires: 2020-07-10
Abstract
Abstract A method of directional radio communication between a first station and a second station comprises the steps of transmitting signals from the second station to the first station via a radio channel. At least one parameter indicative of the speed of change in the radio channel is measured. A rate with which the second station should send signals to the first station is determined from the at least one parameter and the second station sends signals to the first station with at least the rate.
Inventors
- 👤 Marcus Katz
- 👤 Juha Ylitalo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:46
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/24; H04W16/28
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits signals to said first station such that said direction can be determined; and causing said second station to transmit signals to said first station with at least said determined rate.
Claim 2
Independent Claim
136 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits signals to said first station such that said direction can be determined; and causing said second station to transmit signals to said first station with at least said determined rate.
Claim 3
Dependent Claim
31 words
The method as claimed in claim 1 , wherein more signals are transmitted form the first station to said second station than are transmitted to said first from said second station.
Claim 4
Dependent Claim
23 words
The method as claimed in claim 1 , wherein said determined rate is higher with higher speeds of change in said radio channel.
Claim 5
Dependent Claim
27 words
The method as claimed in claim 1 , wherein said first and second stations communicate using a time division multiple access method with frames divided into slots.
Claim 6
Dependent Claim
23 words
The method as claimed in claim 1 , wherein the first and second stations use a same frequency range for transmitting the signals.
Claim 7
Dependent Claim
20 words
The method in claim 1 , wherein the first and second stations use different frequency ranges to transmit the signals.
Claim 8
Dependent Claim
26 words
The method as claimed in claim 1 , wherein a reference signal is sent from the second station to said first station with said determined rate.
Claim 9
Dependent Claim
16 words
The method as claimed in claim 1 , wherein the second station is a mobile station.
Claim 10
Dependent Claim
17 words
The method as claimed in claim 1 , wherein said first station is a base transceiver station.
Claim 11
Dependent Claim
123 words
A first station for directional radio communication between a second station, said first station comprising: means for receiving signals transmitted from a second station to a first station via a radio channel; means for transmitting signals to said second station; means for determining a direction for transmitting the signals to said second station based on the signals received from the second station; means for measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; means for determining from said at least one parameter a determined rate with which said second station transmits signals to said first station such that said direction can be determined; and means for transmitting said determined rate to said second station.
Claim 12
Dependent Claim
123 words
A first station for directional radio communication between a second station, said first station comprising: means for receiving signals transmitted from a second station to a first station via a radio channel; means for transmitting signals to said second station; means for determining a direction for transmitting the signals to said second station based on the signals received from the second station; means for measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; means for determining from said at least one parameter a determined rate with which said second station transmits signals to said first station such that said direction can be determined; and means for transmitting said determined rate to said second station.
Claim 13
Independent Claim
165 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a speed of the second station relative to the first station and said measuring step measures the speed of the second station relative to the first station; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 14
Independent Claim
165 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a speed of the second station relative to the first station and said measuring step measures the speed of the second station relative to the first station; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 15
Independent Claim
159 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a distance between the first and second stations and said measuring step measures the distance between the first and second stations; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 16
Independent Claim
159 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a distance between the first and second stations and said measuring step measures the distance between the first and second stations; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 17
Independent Claim
157 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a coherence time of the radio channel and the measuring step measures the coherence time of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 18
Independent Claim
157 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a coherence time of the radio channel and the measuring step measures the coherence time of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 19
Independent Claim
123 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is an angular spread of the signals received by the first station from the second station and the measuring step measures said angular spread; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 20
Independent Claim
123 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is an angular spread of the signals received by the first station from the second station and the measuring step measures said angular spread; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 21
Independent Claim
114 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a height of an antenna array of the first station above an environment; determining from said at least one parameter a determined rate with which said second station should transmit the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 22
Independent Claim
114 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel, wherein the at least one parameter is a height of an antenna array of the first station above an environment; determining from said at least one parameter a determined rate with which said second station should transmit the signals to said first station; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 23
Independent Claim
131 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station, wherein the determined rate is proportional to: (the speed of the second station)×(angular spread of the signal received from the second station by the first station)/(the distance between the first and second stations)×(the coherence time of said channel); and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 24
Independent Claim
131 words
A method of directional radio communication between a first station and a second station, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station, wherein the determined rate is proportional to: (the speed of the second station)×(angular spread of the signal received from the second station by the first station)/(the distance between the first and second stations)×(the coherence time of said channel); and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 25
Independent Claim
167 words
A method of directional radio communication between a first station and a second station using a time division multiple access method with frames divided into slots, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station, wherein said determined rate is defined as one signal to be transmitted from said second station to said first station is, I an integer; and causing said second station to transmit the signals to said first station with at least said determined rate.
Claim 26
Independent Claim
167 words
A method of directional radio communication between a first station and a second station using a time division multiple access method with frames divided into slots, said method comprising the steps of: transmitting signals from a second station to a first station via a radio channel; transmitting signals from said first station to said second station; determining a direction for transmitting the signals from said first station to said second station based on the signals transmitted from the second station to the first station; measuring at least one parameter indicative of a rate of change in a characteristic of said radio channel; determining from said at least one parameter a determined rate with which said second station transmits the signals to said first station, wherein said determined rate is defined as one signal to be transmitted from said second station to said first station is, I an integer; and causing said second station to transmit the signals to said first station with at least said determined rate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2007-02-23 | 2007-08-25 | 2008-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-23 | 2011-08-25 | 2012-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-02-23 | 2015-08-25 | 2016-02-24 | $7700.00 | Window Closed / Lapsed |