TY - GEN
T1 - Fuzzy control for optimizing the transmission power in cellular phones
AU - Sepulveda, Roberto
AU - Melin, Patricia
AU - Zamudio, Edgar
AU - Montiel, Oscar
PY - 2003
Y1 - 2003
N2 - In this paper is proposed a fuzzy control system for optimizing the transmission power in cellular phones. As the mobil station moves toward the edge of a cell, the cell's base station notes that the signal strength is diminishing. Meanwhile, the base station in the cell the mobil station is moving toward (which is listening and measuring signal strength on all frequencies, not just its own one) sees the phone's signal strength increasing. The two base stations coordinate with each other, and at some point, the phone gets a signal on a control channel telling it to change frequencies. This hand off switches the phone to a different cell, which receives the signal with a bigger intensity, so the next decrement of the transmission power will be the lower possible without risking the quality of the transmission. Nowadays ihe central cellular controls the transmission power on the mobil station, on intervals of 4 dbs to increase or decrease it, so the final power always is above or under the required power. The fuzzy control system proposed, basically controls the increment or decrement of the transmission power based on the measures of the signal intensity and the signal noise ratio, in this way the base station at a certain cell, will receive the radio frequency of the mobil station with the intensity required. This fuzzy system has two inputs, represented by the signal intensity and the signal noise ratio; and one output, change in the transmission power.
AB - In this paper is proposed a fuzzy control system for optimizing the transmission power in cellular phones. As the mobil station moves toward the edge of a cell, the cell's base station notes that the signal strength is diminishing. Meanwhile, the base station in the cell the mobil station is moving toward (which is listening and measuring signal strength on all frequencies, not just its own one) sees the phone's signal strength increasing. The two base stations coordinate with each other, and at some point, the phone gets a signal on a control channel telling it to change frequencies. This hand off switches the phone to a different cell, which receives the signal with a bigger intensity, so the next decrement of the transmission power will be the lower possible without risking the quality of the transmission. Nowadays ihe central cellular controls the transmission power on the mobil station, on intervals of 4 dbs to increase or decrease it, so the final power always is above or under the required power. The fuzzy control system proposed, basically controls the increment or decrement of the transmission power based on the measures of the signal intensity and the signal noise ratio, in this way the base station at a certain cell, will receive the radio frequency of the mobil station with the intensity required. This fuzzy system has two inputs, represented by the signal intensity and the signal noise ratio; and one output, change in the transmission power.
KW - Cellular phones
KW - Fuzzy control
KW - Transmission power
UR - http://www.scopus.com/inward/record.url?scp=1642303787&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:1642303787
SN - 1932415122
T3 - Proceedings of the International Conference on Artificial Intelligence IC-AI 2003
SP - 235
EP - 241
BT - Proceedings of the International Conference on Artificial Intelligence IC-AI 2003
A2 - Arabnia, H.R.
A2 - Joshua, R.
A2 - Mun, Y.
A2 - Arabnia, H.R.
A2 - Joshua, R.
A2 - Mun, Y.
T2 - Proceedings of the International Conference on Artificial Intelligence, IC-AI 2003
Y2 - 23 June 2003 through 26 June 2003
ER -