A method and system are disclosed for avoiding bad frequency subsets in a frequency hopping cordless telephone system. A base station communicates with the handsets using frequencies selected from active frequency subsets. Bad frequency subsets are avoided by monitoring the air interface between the base station and handsets for errors in active frequency subsets. Errors in each active frequency subset are counted during a short-term interval using an associated short-term error counter and duri...

In one embodiment of method and appartus for determining loading in a communication system, the communication system accumulates a power control commands series and corresponding transmit gain adjustments series between a base station and a designated remote station, under regular operating conditions. After transmissions form the remaining remote stations are interrupted, the communication system repeats the accumulation, and determines the loading according to the accumulated series. Alternati...

A system and method are presented for reducing intermodulation products in a cellular radio system. The cellular radio system constructs and stores modified channel sets that have a reduced measure of homogeneity. The cellular radio system selects a channel number from the appropriate modified channel set in order to support a call. This invention reduces radio interference, thus improving the quality of service and increasing the call capacity of the cellular radio system.

A communication device locates a wireless service provider in a multi-service provider environment using a frequency band search schedule. The frequency band search schedule has a first or home band and a several other frequency bands in a predetermined order. The order of the frequency bands may be programmed by the user or by a home service provider over the air. The communication device searches for an acceptable service provider by examining the home band and then the other bands listed in t...

A teleremote device includes a cordless or cellular telephone in combination with a remote controller for a television, VCR, satellite receiver, DVD device, and/or video game controller. The telephone and remote control device are provided in a single rechargeable unit. The device includes a telephone keypad on one side of the device, and a remote control keypad on the other side. To avoid accidental or inadvertent actuation of keys on one side of the device while intending use of the other side...

An apparatus and method for suppressing interference between a first signal transmitted from an antenna of a first communication system and a second signal received by a second communication system in proximity to the first communication system, including: a reflecting assembly equipped to the transmit antenna of the first communication system and a position adjusting assembly for varying the slope of the reflecting assembly, moving the reflecting assembly right and left, and changing the height...

The present invention relates to a portable communication device. The communication device comprises a housing which accommodates a number of components enabling the user to effect two-way communications including data transfer and personal communications. The components include a selectively operable smart card sensor, a display device, a mobile electronic data communications facility to receive and transmit data communications, and a data transaction processing means in data communication with...

A method of requesting authentication triplets as a function of CPU processing time at a MSC. The MSC requests a new set of authentication triplets from an HLR as a function of how busy the MSC CPU is. During the least busy periods of time, the MSC requests a new set of triplets often and discards some triplets, while during medium busy periods of time the MSC requests a new set of triplets when only, for instance, 2 triplets remain. During the busy periods of time, the MSC only requests a new s...

The present invention provides devices, systems, and methods for remotely activating a controller. In particular, the invention provides devices operable through a user's tactile sensation and easily operable for the elderly and the very young. In one embodiment, the present invention provides a remote transmitter for use with a controller such as a telephone base unit. The transmitter comprises a housing and a signal transmitter coupled to the housing. A switch device having a signal on positio...

In a time division multiple access wireless communication system, a wireless radio station performs a timing error compensation method. The wireless radio station receives messages including a synchronisation pattern. The wireless radio station adopts a power down mode between reception of messages, and accumulates a timing error representing an accumulated difference between expected times of arrival of the synchronisation patterns and actual times of arrival of the synchronisation patterns, du...