Abstract: A base station and receiver system for use in a base station which achieves enhanced dependability by logically separating the diversity reception paths into different failure paths. In one embodiment, the receiver system includes a first diversity reception path for receiving a first radio signal and a second diversity reception path for receiving a second radio signal. The first and second radio signals may be amplitude and phase shifted versions of the same information signal according to well known principles of diversity reception. At least one demodulator diversity combines the first and second radio signals and demodulates the diversity combined first and second radio signals. Additionally, the first and second diversity paths are logically separated into different failure paths.

Abstract: When a base station stops transmission due to its maintenance, transmission electric power of the base station is controlled so that a radio network between a mobile station and a selected one of the mobile station and the neighboring stations may not be disconnected. The base station gradually reduces the level of transmission electric power. Until the transmission completely stops, soft handoff deletion procedure between the base station and the mobile station is performed and soft handoff addition procedure between one of the neighboring base stations and the mobile station is performed.

Abstract: A method of controlling switching of an operation mode of a TV phone. The TV phone includes a TV unit that reproduces and outputs a video signal and an audio signal from a selected channel. A display unit interfaces with the TV unit and receives and displays the video signals from the TV unit while in a TV mode. A TV audio signal processer receives the audio signal from the TV unit and outputs audible sound. An MRFU receives data of a forward channel transmitted from a base station. An MSP provides a channel selecting signal to the TV unit in the TV mode and transmits and receives an audio signal input from the MRFU in a phone mode. The method comprises the steps of alerting the user of an incoming call in response to an incoming call signal transmitted from the base station when the TV phone is in a TV mode and switching from the TV mode to the phone mode, the switching preferably including disabling the operation of the TV unit.

Abstract: A wireless communication system base station uses a dual-polarized antenna array to receive two signal groups having orthogonal polarizations. In a preferred embodiment, a first signal group is received using a first sub-array of odd-numbered antenna elements, while a second signal group is received using a second sub-array of even-numbered antenna elements. Dipoles within the odd-numbered elements are selected so that they have a common polarization orthogonal to the dipoles selected in the even-numbered elements. The two signal groups thus have orthogonal polarizations. Base station signal processing hardware performs separate spatial channel estimation for these two groups, and uses the polarization diversity to improve performance in both the uplink and downlink. The use of polarization diversity allows the physical dimensions of the antenna array to be kept to a minimum.

Abstract: A text message originated ringer operates to carry out some operation based on an embedded control code in the message. The message includes all text, but some of the text characters are reserved. A control sequence, also in text, is contained between two reserved text characters. That control sequence is used to control the ringer in the remote phone. The control sequence is not displayed as part of the text message, but instead is only used as the control.

Abstract: There is provided a television tuner including a first amplifier for amplifying received signals having frequencies of VHF-L and VHF-H bands, a first converter for converting a frequency of the received signals having been amplified by the first amplifier, a second amplifier for amplifying a received signal having a frequency of UHF band, a second converter for converting a frequency of the received signal having been amplified by the second amplifier, a signal transmitter for transmitting an operation switching signal by which the VHF-L band, the VHF-H band, or the UHF band is selected, a detector for detecting that none of the VHF-L and VHF-H bands is selected, based on data about the VHF-L and VHF-H bands, represented by the operation switching signal, and a driver for driving the second amplifier and pausing the first amplifier when the detector detects that none of the VHF-L and VHF-H bands is selected, and pausing the second amplifier and driving the first amplifier when the detector detects that one of

Abstract: A wireless office architecture, and method of operation thereof, including: (1) a private branch exchange (PBX) having a wired extension and (2) a wireless base station, couplable to the PBX and having a wireless terminal, the wireless terminal associated with the wired extension to allow the wireless base station and the PBX to cooperate to manage the wireless terminal and the wired extension as a unified extension, the wireless base station and the wireless terminal communicating according to a public network standard protocol to allow the wireless terminal to interact both with the wireless base station and in the public network.

Abstract: A base transceiver station has a signal strength receiver and is capable of transmitting a directed retry signal. A processor connects to the signal strength receiver and compares a received signal strength to a predefined threshold. The processor causes the base transceiver station to send the directed retry signal if the received signal strength is less than the predefined threshold. A method is provided where a characteristic of a signal received at a base transceiver station is measured and compared to a predefined threshold. A directed retry is sent if the signal characteristic is less than the predefined threshold, and a communication channel is established if a response to the directed retry is received at the base transceiver station.

Abstract: A method for adding frequency assignment in a mobile telecommunication system is disclosed. The method according to the present invention includes a step of getting a mobile station to receive the communication services through the presently serviceable FAs in such a way that the BTS transmits the channel list including the information of the presently serviceable FAs to the mobile station; a step of adding a new FA by the BTS; a step of generating a first channel list having only information for the added FA; a step of optimizing the new FA by getting the operating mobile station to be provided with the communication services through only the new FA; a step of generating a second channel list including the information of all FAs, which are presently serviceable by the BTS and the new FA after completion of the optimization of the new FA; and, a step of getting the mobile station to be provided with the communication services through all the FAs to the mobile station based on the second channel list.

Abstract: A hand-held scanner incorporates a cellular telephone module. The scanner communicates with a host which serves as a reading or data distribution device. This permits the use of a cableless scanner for low powered and secure wireless transmission. The scanner is able to take advantage of the existing design features of a local cellular network. One mode of operation allows the connection to be limited to an amount of time corresponding to that required for transferring of the data.

Abstract: In a digital switching network system wherein service measurements are periodically automatically collected, a user interfaces with the network via a Web browser to select those traffic counts of interest for on-demand sampling. The user designates whether the selected traffic counts are retrieved as a single sample or as a periodic sample. When the traffic counts are to be retrieved as a periodic sample, the user designates a period for the periodic sample. The system determines the locations where the traffic counts resides in the network, retrieves the traffic counts from their locations, and displays the traffic counts to the user.

Abstract: A system for providing a power-efficient soft handoff in a multicarrier CDMA cellular system includes: a determining device for determining a time point when a user of a mobile station executes a handoff operation from one base station to an adjacent base station thereto, during the user communicates with another system's user through the one base station; a providing device for providing handoff request information inclusive of information of the adjacent base station; a base station control device for commanding the one base station and the adjacent base station to transmit stop of information of the another system's user, with non-assigned carrier and for commanding the adjacent base station to transmit start the information of the another system's user, with assigned carrier, in accordance with the hand off request information received through the one base station by the mobile station's user; a base station transmission device for transmitting the information of the another system&apo

Abstract: It is known to introduce into a cellular mobile radio network (CN) a test transmitter (TS) which transmits a test signal for reception by mobile stations located in the coverage area of the mobile radio network. A simple, computer-aided method for testing the mobile radio network is disclosed in which the test transmitter (TS) transmits the test signal on a carrier already assigned to a base station (BTS) of the mobile radio network (CN) for transmitting broadcast signals. Thus, each mobile station can receive the test signal in a simple manner. The receive level is transmitted to the base station serving the area in which the mobile station is located, and then passed on to a computer for analysis.

Abstract: According to one aspect, a portable radiotelephone comprising a housing a cover slidably engaged with the housing and selectively reciprocable relative to the housing between a first position, wherein the portable radiotelephone is in an on-hook condition and, alternatively, a second position, wherein the portable radiotelephone is in an off-hook condition. According to another aspect, the portable radiotelephone comprises a housing, a cover slidably engaged with the housing and selectively reciprocable relative to the housing between a first position and, alternatively, a second position, wherein at least a portion of the cover extends outwardly beyond the housing, and an antenna fixed to and extending along the cover, at least a portion of the antenna extending outwardly beyond the housing when the cover is in the second position.