Power control method for uplink in mobile communication and apparatus thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-007/00
H04B-017/00
출원번호
UP-0653764
(2007-01-16)
등록번호
US-7761112
(2010-08-09)
우선권정보
KR-10-2006-0003972(2006-01-13)
발명자
/ 주소
Lee, Yu-Ro
Hong, Een-Kee
Kim, Dong-Cheol
Shin, Hyun-Joon
Kwon, Dong-Seung
출원인 / 주소
Samsung Electronics Co., Ltd.
Electronics and Telecommunications Research Institute
KT Corporation
SK Telecom Co., Ltd.
Hanaro Telecom., Inc.
대리인 / 주소
The Farrell Law Firm, LLP
인용정보
피인용 횟수 :
3인용 특허 :
5
초록▼
A power controlling device in a mobile communication system, and a method thereof. A base station calculates an average interference of N previous frames, and broadcasts the average interference to subscriber stations. The subscriber stations determine transmission power based on the average interfe
A power controlling device in a mobile communication system, and a method thereof. A base station calculates an average interference of N previous frames, and broadcasts the average interference to subscriber stations. The subscriber stations determine transmission power based on the average interference. Noise and Interference (NI) of frames within a section corresponding to a setting size is calculated (the frames may include a current frame) so an estimated interference is close to the interference generated in the frame in which the subscriber station actually transmits a signal. In addition, to more precisely estimate the NI, the NI of the current frame is compensated according to a value and is broadcast.
대표청구항▼
What is claimed is: 1. A power controlling method for controlling uplink power in a mobile communication system, the power controlling method comprising: estimating, by a base station, average Noise and Interference (NI) of a current frame based on signals received in the current frame, and setting
What is claimed is: 1. A power controlling method for controlling uplink power in a mobile communication system, the power controlling method comprising: estimating, by a base station, average Noise and Interference (NI) of a current frame based on signals received in the current frame, and setting the estimated average NI as a first average NI; averaging, by the base station, NIs of previous frames within a section corresponding to a setting size, the previous frames excluding the current frame, and calculating a second average NI; comparing, by the base station, the first average NI and the second average NI; increasing, by the base station, the first average NI to compensate the first average NI when the first average NI is less than the second average NI; broadcasting, by the base station, the compensated first average NI to subscriber stations in a corresponding cell; and broadcasting, by the base station, the first average NI without compensating the first average NI to the subscriber stations in the corresponding cell when the first average NI is greater than the second average NI, wherein the subscriber stations determine transmission power for transmitting a signal to an uplink based on the broadcasted first average NI. 2. The power controlling method of claim 1, wherein the setting size is the size of a sliding window. 3. The power controlling method of claim 1, wherein the power controlling method is performed for each frame. 4. The power controlling method of claim 1, wherein the subscriber stations apply the received average NI to an open-loop power controlling method to determine the transmission power. 5. A power controlling device for broadcasting a signal for determining uplink transmission power to subscriber stations in a mobile communication system, the uplink transmission power determined by the subscriber station, the power controlling device comprising: a receiving unit for processing a received signal; a storage unit for storing Noise and Interference (NI) measured in a previous frame; an NI estimating unit for estimating a first average NI of a current frame based on signals received through the receiving unit in the current frame, averaging the NIs of previous frames within a section corresponding to a setting size, the previous frames excluding the current frame, and estimating a second average NI; an NI compensating unit for comparing the first average NI and the second average NI, and compensating the first average NI according to a comparison result; and a transmitting unit for broadcasting a signal including the first average NI output from the NI compensating unit, wherein the NI compensating unit outputs the first average NI without compensating the first average NI when the first average NI is greater than the second average NI. 6. The power controlling device of claim 5, wherein the NI compensating unit increases the first average NI to compensate the first average NI when the first average NI is less than the second average NI. 7. The power controlling device of claim 5, wherein the setting size is the size of a sliding window. 8. The power controlling device of claim 5, wherein the mobile communication system is an Orthogonal Frequency Division Multiple Access system.
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이 특허에 인용된 특허 (5)
Miyamoto, Yukie, CDMA mobile communications system.
Tomohiro Dohi JP; Syunsuke Seo JP; Yukihiko Okumura JP; Mamoru Sawahashi JP, Power controller for mobile communication system wherein a signal to interference threshold is dynamically moved based on an error rate measurement.
Kazuyuki Miya JP, Transmission power control method using both a value compensated according to control data contained in base station signal and measured power of base station signal.
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