Abstract: A system (200) and method (400) for near-end detection of voice (107) in speakerphone mode is provided. The method can include determining (402) a convergence of an adaptive filter (220), determining (404) a dissimilarity between an autocorrelation (311) of an echo estimate (244) and an autocorrelation (312) of a microphone signal (243) if the adaptive filter has converged, computing (406) a weighting factor (279) based on the dissimilarity, applying the weighting factor to a voice activity level (281) to produce a weighted voice activity level (283), comparing (410) the weighted voice activity level to a constant threshold, and performing (412) a muting operation in accordance with the comparing for providing half-duplex communication.

Abstract: A system (200) and method (400) for near-end detection of voice (107) in speakerphone mode is provided. The method can include determining (402) a convergence of an adaptive filter (220), determining (404) a dissimilarity between an autocorrelation (311) of an echo estimate (244) and an autocorrelation (312) of a microphone signal (243) if the adaptive filter has converged, computing (406) a weighting factor (279) based on the dissimilarity, applying the weighting factor to a voice activity level (281) to produce a weighted voice activity level (283), comparing (410) the weighted voice activity level to a constant threshold, and performing (412) a muting operation in accordance with the comparing for providing half-duplex communication.

Abstract: A system (160) and method (500) is provided for suppressing an echo during a handover between two networks. During a handover from a first network (110) to a second network (140), a microphone to the second network can be muted (506) to suppress an echo. The handover to the second network can be conducted while maintaining a connection with the first network. Upon connecting to the second network, the microphone to the first network can be muted (510), and a network switch (512) can be performed while the microphone is muted on the first network and also muted on the second network. The microphone on the second network can then be un-muted (514) and the first call on the first network can be terminated.

Abstract: A method utilizes a training monitoring algorithm to control when full training of a transmitter of a shared communication system that utilizes dynamic channel allocation occurs. Full training of the transmitter occurs during an initial transmission slot of a training interval that is used to request allocation of fixed communication resources of the communication system or when operating conditions of the transmitter, such as power and frequency, change. The duration of the training interval is dynamically controlled by manipulation of full-power and cut-back power training interval counters.

Abstract: A subscriber (410) to a radio communication system manages information needed to monitor for potential server sites during an ongoing communication session. Upon switching server sites during an ongoing communication (520, 530, 540, 550), the subscriber uses a modified neighbor site list for subsequent monitoring for potential server sites (570). The modified list is generated from the original list without benefit of new information downloaded from an external source, by replacing information representing the new server site with information representing the old server site (560).

Abstract: A subscriber (510) to a radio communication system acquires new neighbor cell information after switching to a new server site (530) during lulls in an ongoing communication session. In one embodiment, the new server site (530) broadcasts neighbor cell list information during lulls in the communication activity on the communication channel in an unsolicited manner (710, 720). In an alternative embodiment, the subscriber (510) first transmits a request to the server site for neighbor cell list information during a lull in communication activity (810, 820). The server site (530) responds by transmitting neighbor cell list information during one or more lulls in communication activity on the communication channel (830, 840).