US6741862B2
Expired / Lapsed
US
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Enhanced reverse-link rate control in wireless communication
Assignee: Ericsson EVDO Inc
•
Filing: 2001-02-07
•
Granted: 2004-05-25
•
Expires: 2021-02-07
Abstract
Abstract By controlling reverse rates among mobile stations to reduce reverse-link interference, reverse-link throughput can be increased.
Inventors
- 👤 Sae-Young Chung
- 👤 Dae-Young Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/69; H04B1/707; H04B1/7097; H04B1/7103; H04L; H04L1/00; H04L1/0001; H04L1/0015; H04L1/0022; H04L1/0023; H04L1/0025; H04B2201/00; H04B2201/69; H04B2201/707; H04B2201/70701; H04B2201/70703; H04B2201/7097; H04B2201/709709; H04L1/0002; H04L2001/0092
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
106 words
A method comprising determining a forward-link data rate at a mobile device at which the mobile device desires to receive its forward-link data packets from a base station, transmitting information conveying the forward-link data rate from the mobile station to the base station, determining a maximum reverse data rate at the base station based on the forward-link data rate, transmitting information conveying the maximum reverse data rate from the base station to the mobile device, determining at the mobile station its operational reverse rate between zero and the maximum reverse data rate, and transmitting data packets by the mobile station at the determined operational reverse rate.
Claim 2
Independent Claim
106 words
A method comprising determining a forward-link data rate at a mobile device at which the mobile device desires to receive its forward-link data packets from a base station, transmitting information conveying the forward-link data rate from the mobile station to the base station, determining a maximum reverse data rate at the base station based on the forward-link data rate, transmitting information conveying the maximum reverse data rate from the base station to the mobile device, determining at the mobile station its operational reverse rate between zero and the maximum reverse data rate, and transmitting data packets by the mobile station at the determined operational reverse rate.
Claim 3
Dependent Claim
46 words
The method of claim 1 further comprising averaging the forward-link data rate over a certain period of time, and wherein determining the maximum reverse data rate further comprises determining the maximum reverse data rate in a sector of the base station using the averaged forward-link data.
Claim 4
Dependent Claim
33 words
The method of claim 1 in which the transmitted information from the base station to the mobile device comprises one or more rate control bits from the base station to the mobile device.
Claim 5
Dependent Claim
43 words
The method of claim 3 in which the one or more reverse rate control bits comprise a first bit configuration indicating an increase to a maximum reverse data rate and a second bit configuration indicating a decrease to the maximum reverse data rate.
Claim 6
Dependent Claim
30 words
The method of claim 4 in which the one or more reverse rate control bits further comprise a third bit configuration indicating no change in the maximum reverse data rate.
Claim 7
Dependent Claim
39 words
The method of claim 4 further comprising transmitting, by the mobile device, data at a rate between zero and the maximum reverse data rate based on the one or more reverse rate control bits received from the base station.
Claim 8
Dependent Claim
36 words
The method of claim 1 wherein determining the maximum reverse data rate further comprises determining the maximum reverse rate so that an aggregate rate associated with all mobile devices in one or more sectors is maximized.
Claim 9
Dependent Claim
28 words
The method of claim 1 wherein determining the maximum reverse data rate further comprises determining the maximum reverse rate of the mobile device in accord with a condition.
Claim 10
Dependent Claim
14 words
The method of claim 8 in which the condition includes fairness among mobile devices.
Claim 11
Dependent Claim
20 words
The method of claim 9 in which the fairness is defined as a ratio of highest and lowest user throughputs.
Claim 12
Dependent Claim
15 words
The method of claim 1 in which the base station has one or more sectors.
Claim 13
Dependent Claim
28 words
The method of claim 1 wherein determining the operational reverse rate further comprises determining the operational reverse rate based on a current transmission rate of the mobile device.
Claim 14
Dependent Claim
30 words
The method of claim 1 wherein determining the operational reverse rate further comprises determining the operational reverse rate based on an amount of data to transmit at the mobile device.
Claim 15
Dependent Claim
41 words
The method of claim 1 wherein determining the operational reverse rate further comprises determining the operational reverse rate based on transition probabilities to increase or decrease the rate and on sector rate control information received from one or more base stations.
Claim 16
Dependent Claim
20 words
The method of claim 14 in which values of the transition probabilities are transmitted from one or more base stations.
Claim 17
Dependent Claim
49 words
The method of claim 14 in which the sector rate control information is defined per sector and comprises a first bit configuration indicating a probabilistic increase to the mobile device's operational reverse rate and a second bit configuration indicating a probabilistic decrease to the mobile device's operational reverse rate.
Claim 18
Dependent Claim
57 words
The method of claim 1 wherein the base station is a first base station, the method further comprising receiving, at one or more base stations other than the first base station, the information conveying the forward-link data rate and a requested reverse data rate from the mobile station; and relaying the information to the first base station.
Claim 19
Independent Claim
122 words
A method comprising determining a maximum reverse data rate based on an estimated amount of interference a mobile device is causing to one or more sectors other than the sectors serving the mobile device, transmitting reverse rate information conveying the maximum reverse data rate between a base station and the mobile device, the base station including one or more sectors, and transmitting sector rate control information from the one or more sectors to all mobile devices in that respective sector, determining an operational reverse rate at the mobile station between zero and the maximum rate based on the sector rate control information, and transmitting data packets by the mobile station at the determined operational reverse rate without further consulting the base station.
Claim 20
Independent Claim
122 words
A method comprising determining a maximum reverse data rate based on an estimated amount of interference a mobile device is causing to one or more sectors other than the sectors serving the mobile device, transmitting reverse rate information conveying the maximum reverse data rate between a base station and the mobile device, the base station including one or more sectors, and transmitting sector rate control information from the one or more sectors to all mobile devices in that respective sector, determining an operational reverse rate at the mobile station between zero and the maximum rate based on the sector rate control information, and transmitting data packets by the mobile station at the determined operational reverse rate without further consulting the base station.
Claim 21
Dependent Claim
29 words
The method of claim 18 wherein determining the maximum reverse data rate further comprises determining the estimated amount of interference based on a forward-link SIR for the mobile device.
Claim 22
Dependent Claim
16 words
The method of claim 19 further comprising averaging the forward-link SIR over a period of time.
Claim 23
Dependent Claim
25 words
The method of claim 19 further comprising determining the forward-link SIR based on received pilot power at the mobile device from one or more sectors.
Claim 24
Dependent Claim
20 words
The method of claim 19 further comprising determining the forward-link SIR based on total power received at the mobile device.
Claim 25
Dependent Claim
27 words
The method of claim 18 wherein determining the maximum reverse rate further comprises determining the maximum reverse rate based on a queue status of the mobile device.
Claim 26
Dependent Claim
32 words
The method of claim 18 wherein determining the maximum reverse rate further comprises determining the maximum reverse rate based on a status of the sector in which the mobile device is operating.
Claim 27
Dependent Claim
20 words
The method of claim 24 in which the status of the sector is associated with a number of mobile devices.
Claim 28
Dependent Claim
27 words
The method of claim 24 in which the status of the sector is associated with a set of reverse rates of other devices operating in the sector.
Claim 29
Dependent Claim
37 words
The method of claim 18 wherein transmitting the reverse rate information further comprises transmitting the reverse rate information comprising one or more rate control bit or bits from one or more base stations to the mobile device.
Claim 30
Dependent Claim
43 words
The method of claim 27 in which the one or more reverse rate control bit or bits comprise a first bit configuration indicating an increase to the maximum reverse rate and a second bit configuration indicating a decrease to the maximum reverse rate.
Claim 31
Dependent Claim
31 words
The method of claim 28 in which the one or more reverse rate control bit or bits further comprises a third bit configuration indicating no change in the maximum reverse rate.
Claim 32
Dependent Claim
48 words
The method of claim 27 wherein determining its operational reverse rate further comprises determining, by the mobile device, its operational reverse rate based on the rate control bits received from one or more base stations, the method further comprising, storing, by the mobile device, its operational reverse rate.
Claim 33
Dependent Claim
27 words
The method of claim 18 wherein determining the operational reverse rate further comprises determining the operational reverse rate based on a current rate of the mobile device.
Claim 34
Dependent Claim
30 words
The method of claim 18 wherein determining the operational reverse rate further comprises determining the operational reverse rate based on an amount of data to transmit at the mobile device.
Claim 35
Dependent Claim
41 words
The method of claim 18 wherein determining the operational reverse rate further comprises determining the operational reverse rate based on transition probabilities to increase or decrease the rate and on sector rate control information received from one or more base stations.
Claim 36
Dependent Claim
19 words
The method of claim 33 further comprising transmitting values of the transition probabilities from one or more base stations.
Claim 37
Dependent Claim
39 words
The method of claim 34 wherein determining the maximum reverse rate further comprises determining the maximum reverse rate of the mobile device so that an aggregate rate associated with all mobile devices in one or more sectors is maximized.
Claim 38
Dependent Claim
29 words
The method of claim 34 wherein determining the maximum reverse data rate further comprises determining the maximum reverse data rate of the mobile device in accord with a condition.
Claim 39
Dependent Claim
14 words
The method of claim 36 in which the condition includes fairness among mobile devices.
Claim 40
Dependent Claim
20 words
The method of claim 37 in which the fairness is defined as a ratio of highest and lowest user throughputs.
Claim 41
Independent Claim
128 words
A method comprising, determining a forward-link data rate at a mobile device at which the mobile device desires to receive its forward-link data packets from a base station, determining a requested reverse data rate at the mobile station at which the mobile device desires to transmit its reverse-link data packets to the base station, transmitting information conveying the forward-link data rate and the requested reverse data rate from the mobile station to the base station, determining at the base station a reverse data rate between zero and the requested reverse data rate based on the forward-link data rate information, transmitting information conveying the determined reverse data rate from the base station to the mobile device, and transmitting data packets by the mobile station at the determined reverse rate.
Claim 42
Independent Claim
128 words
A method comprising, determining a forward-link data rate at a mobile device at which the mobile device desires to receive its forward-link data packets from a base station, determining a requested reverse data rate at the mobile station at which the mobile device desires to transmit its reverse-link data packets to the base station, transmitting information conveying the forward-link data rate and the requested reverse data rate from the mobile station to the base station, determining at the base station a reverse data rate between zero and the requested reverse data rate based on the forward-link data rate information, transmitting information conveying the determined reverse data rate from the base station to the mobile device, and transmitting data packets by the mobile station at the determined reverse rate.
Claim 43
Dependent Claim
14 words
The method of claim 39 wherein the base station comprises one or more sectors.
Claim 44
Dependent Claim
57 words
The method of claim 39 wherein the base station is a first base station, the method further comprising receiving, at one or more base stations other than the first base station, the information conveying the forward-link data rate and the requested reverse data rate from the mobile station; and relaying the information to the first base station.
Claim 45
Dependent Claim
24 words
The method of claim 39 wherein one or more base stations including the base station receive the reverse-link data packets from the mobile station.
Claim 46
Dependent Claim
46 words
The method of claim 39 further comprising averaging the requested forward-link data rate over a certain period of time, and wherein determining at the base station a reverse data further comprises determining the reverse data rate at the base station using the averaged forward-link data rate.
Claim 47
Dependent Claim
31 words
The method of claim 39 wherein determining the requested reverse rate further comprises determining the requested reverse rate at the mobile device based on a queue status of the mobile device.
Claim 48
Dependent Claim
36 words
The method of claim 39 wherein determining the requested reverse rate further comprises determining the requested reverse rate at the mobile device based on a status of a sector in which the mobile device is operating.
Claim 49
Dependent Claim
20 words
The method of claim 45 in which the status of the sector is associated with a number of mobile devices.
Claim 50
Dependent Claim
27 words
The method of claim 46 in which the status of the sector is associated with a set of reverse rates of other devices operating in the sector.
Claim 51
Independent Claim
89 words
A method comprising determining a forward-link data rate at a mobile device at which the mobile device desires to receive its forward-link data packets from a base station, transmitting information conveying the desired forward-link data rate from the mobile station to the base station, determining at the base station a reverse data rate based on the desired forward-link data rate information, transmitting information conveying the determined reverse data rate from the base station to the mobile device, and transmitting data packets by the mobile station at the determined rate.
Claim 52
Independent Claim
89 words
A method comprising determining a forward-link data rate at a mobile device at which the mobile device desires to receive its forward-link data packets from a base station, transmitting information conveying the desired forward-link data rate from the mobile station to the base station, determining at the base station a reverse data rate based on the desired forward-link data rate information, transmitting information conveying the determined reverse data rate from the base station to the mobile device, and transmitting data packets by the mobile station at the determined rate.
Claim 53
Dependent Claim
14 words
The method of claim 48 wherein the base station comprises one or more sectors.
Claim 54
Dependent Claim
57 words
The method of claim 48 wherein the base station is a first base station, the method further comprising receiving, at one or more base stations other than the first base station, the information conveying the forward-link data rate and the requested reverse data rate from the mobile station; and relaying the information to the first base station.
Claim 55
Dependent Claim
24 words
The method of claim 48 wherein one or more base stations including the base station receive the reverse-link data packets from the mobile station.
Claim 56
Dependent Claim
43 words
The method of claim 48 further comprising averaging the requested forward-link data rate over a certain period of time, and wherein determining the reverse data rate further comprises determining the reverse data rate at the base station using the averaged forward-link data rate.
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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) | 2007-05-25 | 2007-11-24 | 2008-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-25 | 2011-11-24 | 2012-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-25 | 2015-11-24 | 2016-05-25 | $7700.00 | Window Closed / Lapsed |