US6301485B1
Expired / Lapsed
US
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Transmission power control method in mobile communication system
Assignee: Ericsson Korea Partners Co Ltd
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Filing: 1998-12-31
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Granted: 2001-10-09
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Expires: 2018-12-31
Abstract
Abstract A transmission power control method in a mobile communication system using a code division multiple access (CDMA) method includes: a power control process in an access mode having: a step of measuring a transmission power of an initial access channel transmitted from a terminal; a step of comparing the measured transmission power level with a pre-setted adequate power level; a step of transmitting a transmission power adjusting message to the terminal according to the comparison result; and a step of the terminal adjusting the transmitting power of the traffic channel to the adequate power level according to the transmission power adjusting message transmitted from a base station; and a power control process in a traffic mode having: a step of measuring the transmission power level of the traffic channel transmitted from the terminal; a step of comparing the measured transmission power level with the pre-setted adequate power level; a step of transmitting an one-bit power control bit to the terminal according to the comparison result; and a step of the terminal increasing/decreasing the transmitting power of the traffic channel by 1 dB according to the power control bit transmitted from the base station.
Inventors
- 👤 Kyung Kuk Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:36
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/06; H04W52/08; H04W52/18; H04W52/22; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/216; H04W52/38; H04W52/50; H04W52/30; H04W52/36
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
105 words
A transmission power control method in a code division multiple access (CDMA) mobile communication system, comprising: computing a deviation between a transmission power value of an initial access channel transmitted from a terminal and a prescribed adequate power value; adjusting a transmission power of a terminal traffic channel to the adequate power level at one time by inserting the deviation value into a transmission power adjusting message for the terminal from a base station; and comparing the transmission power value of the traffic channel transmitted from the terminal with the prescribed adequate power value and incrementally adjusting the transmission power value of the traffic channel.
Claim 2
Dependent Claim
105 words
A transmission power control method in a code division multiple access (CDMA) mobile communication system, comprising: computing a deviation between a transmission power value of an initial access channel transmitted from a terminal and a prescribed adequate power value; adjusting a transmission power of a terminal traffic channel to the adequate power level at one time by inserting the deviation value into a transmission power adjusting message for the terminal from a base station; and comparing the transmission power value of the traffic channel transmitted from the terminal with the prescribed adequate power value and incrementally adjusting the transmission power value of the traffic channel.
Claim 3
Dependent Claim
48 words
The method of claim 1 , wherein the step for computing the deviation comprises: measuring the transmission power of the initial access channel transmitted from the terminal; and comparing the measured transmission power level of the access channel with the prescribed adequate power level and computing the deviation.
Claim 4
Dependent Claim
36 words
The method of claim 1 , further comprising adjusting the transmission power in the terminal of the traffic channel to the adequate power level according to the transmission power adjusting message transmitted from the base station.
Claim 5
Dependent Claim
34 words
The method of claim 1 , wherein the transmission power adjusting message is formed by converting the deviation between the measured transmission power level and the adequate power level to a n-bits digital signal.
Claim 6
Dependent Claim
21 words
The method of claim 1 , wherein the transmission power adjusting message is transmitted to the terminal through a paging channel.
Claim 7
Dependent Claim
90 words
The method of claim 1 , wherein the step of incrementally adjusting the transmission power of the terminal traffic channel comprises: measuring the transmission power of the traffic channel transmitted from the terminal; comparing the measured transmission power level with the prescribed adequate power level; transmitting an one-bit power control bit to the terminal accordingly to the comparison result; and one of increasing and decreasing the transmission power in the terminal of the traffic channel by 1 dB according to a power control bit value transmitted from the base station.
Claim 8
Dependent Claim
61 words
The method of claim 6 , wherein the power control bit is a binary number for increasing the transmission power by 1 dB when the measured transmission power level is smaller than the adequate power level, and for decreasing the transmission power by 1 dB when the measured transmission power level is greater than or equal to the adequate power level.
Claim 9
Dependent Claim
20 words
The method of claim 6 , wherein the power control bit is transmitted to the terminal through the traffic channel.
Claim 10
Dependent Claim
43 words
The method of claim 1 , wherein the transmission power of the initial access channel signal transmitted from the terminal is controlled by the average power at which the terminal receives a signal transmitted from the base station and the message transmitted therefrom.
Claim 11
Dependent Claim
37 words
The method of claim 1 , wherein the adequate power level is adjusted by a mobile speed of the mobile station, a circumstantial state thereof and an error rate of the data received by the base station.
Claim 12
Dependent Claim
40 words
The method of claim 1 , wherein one transmission power adjusting message causes the transmission power of the terminal traffic channel to be adjusted from the transmission power value of the initial access channel to the prescribed adequate power value.
Claim 13
Dependent Claim
22 words
The method of claim 1 , wherein the power adjustment cause by the transmission power adjusting message is greater than 1 dB.
Claim 14
Dependent Claim
15 words
The method of claim 1 , wherein the deviation value comprises a n-bit digital signal.
Claim 15
Dependent Claim
21 words
The method of claim 13 , wherein a transmission power of an initial traffic channel is determined by the n-bit data.
Claim 16
Dependent Claim
12 words
The method of claim 13 , wherein n is greater than 1.
Claim 17
Dependent Claim
12 words
The method of claim 4 , wherein n is greater than 1.
Claim 18
Dependent Claim
103 words
A transmission power control method in a code division multiple access (CDMA) mobile communication system, comprising: computing a deviation between a transmission power value of an initial access channel transmitted from a terminal and a prescribed adequate power value; adjusting a transmission power of a terminal traffic channel to the adequate power level at one time by inserting the deviation value into a transmission power adjusting message for the terminal from a base station; and adjusting the transmission power of the traffic channel of the terminal to the adequate power level according to the transmission power adjusting message transmitted from the base station.
Claim 19
Dependent Claim
103 words
A transmission power control method in a code division multiple access (CDMA) mobile communication system, comprising: computing a deviation between a transmission power value of an initial access channel transmitted from a terminal and a prescribed adequate power value; adjusting a transmission power of a terminal traffic channel to the adequate power level at one time by inserting the deviation value into a transmission power adjusting message for the terminal from a base station; and adjusting the transmission power of the traffic channel of the terminal to the adequate power level according to the transmission power adjusting message transmitted from the base station.
Claim 20
Dependent Claim
47 words
The method of claim 17 , wherein the step for computing the deviation comprises: measuring the transmission power of the initial access channel transmitted from the terminal; and comparing the measured transmission power level of the access channel with the adequate power level and computing the deviation.
Claim 21
Dependent Claim
34 words
The method of claim 17 , wherein the transmission power adjusting message is formed by converting the deviation between the measured transmission power level and the adequate power level to a n-bits digital signal.
Claim 22
Dependent Claim
12 words
The method of claim 19 , wherein n is greater than 1.
Claim 23
Dependent Claim
21 words
The method of claim 17 , wherein the transmission power adjusting message is transmitted to the terminal through a paging channel.
Claim 24
Dependent Claim
38 words
The method of claim 17 , further comprising comparing the transmission power value of the traffic channel transmitted from the terminal with the prescribed adequate power value and incrementally adjusting the transmission power value of the traffic channel.
Claim 25
Dependent Claim
87 words
The method of claim 15 , wherein incrementally adjusting the transmission power of the terminal traffic channel comprises: measuring the transmission power of the traffic channel transmitted from the terminal; comparing the measured transmission power level with the prescribed adequate power level; transmitting an one-bit power control bit to the terminal according to the comparison result; and one of increasing and decreasing the transmission power of the traffic channel by the terminal by 1 dB according to the power control bit value transmitted from the base station.
Claim 26
Dependent Claim
61 words
The method of claim 16 , wherein the power control bit is a binary number for increasing the transmission power by 1 dB when the measured transmission power level is less than the adequate power level, and for decreasing the transmission power by 1 dB when the measured transmission power level is greater than or equal to the adequate power level.
Claim 27
Dependent Claim
20 words
The method of claim 23 , wherein the power control bit is transmitted to the terminal through the traffic channel.
Claim 28
Dependent Claim
43 words
The method of claim 17 , wherein the transmission power of the initial access channel signal transmitted from the terminal is controlled by the average power at which the terminal receives a signal transmitted from the base station and the message transmitted therefrom.
Claim 29
Dependent Claim
37 words
The method of claim 21 , wherein the adequate power level is adjusted by a mobile speed of the mobile station, a circumstantial state thereof and an error rate of the data received by the base station.
Claim 30
Dependent Claim
40 words
The method of claim 17 , wherein one transmission power adjusting message causes the transmission power of the terminal traffic channel to be adjusted from the transmission power value of the initial access channel to the prescribed adequate power value.
Claim 31
Dependent Claim
22 words
The method of claim 17 , wherein the power adjustment cause by the transmission power adjusting message is greater than 1 dB.
Claim 32
Dependent Claim
23 words
The method of claim 17 , wherein the power adjustment caused by the transmission power adjusting message is fully made in one step.
Claim 33
Dependent Claim
15 words
The method of claim 17 , wherein the deviation value comprises a n-bit digital signal.
Claim 34
Dependent Claim
21 words
The method of claim 31 , wherein a transmission power of an initial traffic channel is determined by the n-bit data.
Claim 35
Dependent Claim
12 words
The method of claim 31 , wherein n is greater than 1.
Claim 36
Independent Claim
83 words
A method of controlling transmission power in a code division multiple access (CDMA) mobile communication system, comprising: computing a deviation between a transmission power value of an initial access channel transmitted from a terminal and a prescribed adequate power value; converting the deviation to a n-bit digital signal; and adjusting a transmission power of a terminal traffic channel to the adequate power level at once by inserting the n-bit digital deviation value into a transmission power adjusting message to send to the terminal.
Claim 37
Independent Claim
83 words
A method of controlling transmission power in a code division multiple access (CDMA) mobile communication system, comprising: computing a deviation between a transmission power value of an initial access channel transmitted from a terminal and a prescribed adequate power value; converting the deviation to a n-bit digital signal; and adjusting a transmission power of a terminal traffic channel to the adequate power level at once by inserting the n-bit digital deviation value into a transmission power adjusting message to send to the terminal.
Claim 38
Dependent Claim
77 words
The method of claim 34 , further comprising: measuring the transmission power of the traffic channel transmitted from the terminal; comparing the measured transmission power level with the prescribed adequate power level; transmitting an one-bit power control bit to the terminal accordingly to the comparison result; and one of increasing and decreasing the transmission power in the terminal of the traffic channel by 1 dB according to a power control bit value transmitted from the base station.
Claim 39
Dependent Claim
36 words
The method of claim 34 , further comprising adjusting the transmission power of the traffic channel of the terminal to the adequate power level according to the transmission power adjusting message transmitted from the base station.
Claim 40
Dependent Claim
18 words
The method of claim 34 , wherein the transmission power adjusting message is transmitted through a paging channel.
Claim 41
Dependent Claim
12 words
The method of claim 34 , wherein n is greater than 1.
Claim 42
Dependent Claim
19 words
The method of claim 34 , wherein the transmission power is at once adjusted by more than 1 dB.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-10-08 | 2005-04-09 | 2005-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-08 | 2009-04-09 | 2009-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-08 | 2013-04-09 | 2013-10-09 | $7700.00 | Window Closed / Lapsed |