Patent ID: 6721351
Filing Date: 2004-04-13
Classification: H04B,H04W

Abstract:
A transmitter of a base transceiver station (BTS) also having a receiver, said transmitter for producing a plurality of pilot signals corresponding to a multi-frequency assignment (FA) to execute a hand-off in a small-capacity (BTS) which only supports a primary frequency assignment (FA1) in a CDMA communication system which supports said multi-frequency assignment, said transmitter comprising:a first phase locked loop (PLL) synthesizer having a first PLL for synthesizing said primary frequency assignment (FA1) signal by controlling said first PLL; a second PLL synthesizer having a second PLL for synthesizing said multi-frequency assignment (FA) signals by controlling said second PLL; and, an up-converter for modulating transmission data with said primary frequency assignment signal provided from said first PLL synthesizer, and for producing pilot signals corresponding to said multi-frequency assignment by modulating a signal, prior to radio frequency modulation, with said multi-frequency assignment signals provided from said second PLL synthesizer, said transmitter being operable to transmit the modulated transmission data and said pilot signals.