Mobile station and cell selecting method for code division...

Details Mobile station and cell selecting method for code division... Mobile station and cell selecting method for code division...

H - Electricity

04

B

H04B 1/40 (2006.01) H04B 7/216 (2006.01) H04B 7/26 (2006.01) H04Q 7/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2116601

A received signal of a control channel of each cell is despread by each spreading code in a correlation detector. The received level of the despread output in a window, including its peak, is measured in a level measuring part and an interference signal level outside the window is also measured. In a control part the difference or ratio between the measured received level and the interference signal level is obtained as a comparison signal for each spreading code, and the comparison signal is compared in terms of magnitude to thereby determine the visited cell or a mobile station.

Un signal reçu d'un canal de commande de chaque cellule est désétalé par chaque code d'étalement dans un détecteur de corrélation. Le niveau de réception de la sortie désétalée dans une fenêtre, y compris la crête, est mesuré dans une partie mesure de niveau. Le niveau d'un signal de brouillage à l'extérieur de la fenêtre est également mesuré. Dans une partie commande, la différence ou le rapport entre le niveau de réception mesuré et le niveau du signal de brouillage est obtenu sous la forme d'un signal de comparaison pour chaque code d'étalement, et le signal de comparaison est comparé du point de vue de sa grandeur, ce qui permet de déterminer la cellule visitée ou une station mobile.

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