Abstract: The present invention utilizes a filter that works on an algorithm that filters out multiuser and multi-path interference. The algorithm is programmed into the DSP processors of receiver handsets and base stations in cellular and multihop wireless radio networks which use the CDMA technology. It can also be implemented in hardware. Additionally, the invention works in a blind manner such that it learns without requiring training samples. The algorithm can be expressed as updating the receiver parameter vector f(n) as: f(n+1)=[I−C(CHC)−1CH][f(n)−mfy(n)yH(n)f(n)]+C(CHC)−1g(n) wherein y(n) is a data vector for each transmitted bit W1(n) from user 1, the receiver will estimate that bit by filtering y(n), i.e. w1(n)=fH(n)y(h), where H denotes Hermitian; g(n) corresponds to the multipath parameters and is updated by a separate revision; and C is a matrix constructed from elements of the desired user's spreading code.

Abstract: A method for evaluating quality of service for billing purposes in a wireless communications system includes establishing a target quality of service level for a subscriber station; expending resources of the wireless communications system at a resource level to maintain the established target quality of service level; measuring the actual quality service level over the measuring interval to characterize the actual quality of service with respect to the target quality of service level as a compliant interval or a non-compliant interval temporally coextensive with the measuring interval.

Abstract: A method and apparatus for entering an alphanumeric character with an accent or extension into an electronic device. A base character is entered into the device using a keypad, and the base character is then displayed on the device display. Next, a table that includes a plurality of accents or extensions is displayed for the user on the device display. The user then selects an accent or extension from the table that the user wishes to associate with the base character. After the selection of the accent or extension from the table by the user, the base character is replaced on the device display with a composite character that consists of the base character and the accent or extension selected by the user from the table.

Abstract: To reduce the number of signal lines in the inside of a radio receiver which determines a reference voltage based on data supplied from an external CPU, the first and second reference value data from the external CPU (1) is supplied to an input section (20) of a PLL control circuit (19), and then latched by a latch circuit (21). The latched data is converted into an analogue reference voltage in D/A converters (23, 24). The reference voltage is transferred to a radio receiving circuit (2) to be supplied to comparison circuits (16, 18) via a single line, respectively, in the inside of the radio receiving circuit (2).

Abstract: 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. Alternatively, the communication system measures power of a test signal injected into base station receiver, under regular operating conditions. After transmissions form the remote stations are interrupted, the communication system repeats the measurement, and determines the loading according to the two measurements. Alternatively, the communication system measures gain of an AGC at the base station's receiver, under regular operating conditions.

Abstract: A system and method of identifying the source of uplink and downlink interference in a disturbed cell of a wireless telecommunications network. Initially, call events occurring in offending cells are recorded. In conjunction, the disturbance events occurring in the disturbed cell of the telecommunications network are recorded. The recorded call events with recorded disturbance events are then correlated. A distribution of disturbed and offending cells within the telecommunications network as a function of time is computed to obtain a statistical correlation of call events in offending cells and subsequent disturbances resulting in the disturbed cell to identify the possible source of disturbances that caused the sealing of the sealed device with in the disturbed cell.

Abstract: A method of assigning a channel to a service in a wireless communications network based on interferences levels and channel quality. Channels are preassigned and then reassigned using an algorithm that assigns a channel to a service based on uplink interference and channel quality measurements. Reassignment can be achieved in one processing pass, rather than requiring multiple iterations.

Abstract: The device (220) of the invention for communicating at a distance has a signal transmission/reception means (223, 224, 102) which has a moving part (102) and a reception device (102, 223, 224), said moving part modifying the electromagnetic environment of said reception device. Preferentially, said moving part is an antenna (102). In particular, said moving part can be fixed to a moving component of an item of office equipment (100) using data received by said communication device.

Abstract: A time diversity satellite system provides geosynchronous satellites in tundra orbits in three orbital planes. The satellites traverse a common figure-eight ground track comprising northern and southern loops. Power modes and early and late operating modes of the satellites are selectively switched to select the satellite currently traversing the northern loop be the late satellite delivering a late signal, that is, a delayed early signal, to satellite receivers. A receiver can therefore employ a relatively small buffer for storing the early satellite signal for only the selected channel in a multi-channel TDM content signal without experiencing latency problems when selecting a new channel.

Abstract: The present invention relates to determining the geographic location of a mobile station in a mobile communications system. The object of the invention is to protect the integrity of the user of the mobile station, so as to prevent the location of the mobile station being established by an outsider against the will of the user. In this respect, an authorization check is carried out in conjunction with a request for determination of the geographical location of a mobile station. The geographical location is only determined when authorization is found for the mobile station to be located. This authorization control involves checking that the user of the mobile station has granted permission for the location of his mobile station MS to be determined on the part of an outsider. The authority check may also include the condition that only certain outsiders may be informed of the geographical location of the mobile station.

Abstract: A wireless communication service network includes a message processing system with at least two programmable application processors (APs) providing operational, administrative and maintenance support for one or more cell base stations in the network serving one or more wireless radio units. Improved control of the AP message processing resources is provided in response to an AP shutdown condition. In accordance with the improvement, an initial overload control (OLC) threshold is set for the APs, and the APs are monitored during their operation as they perform message processing. In the event that one of the APs becomes non-operational (non-operating AP), the OLC threshold relative to one or more remaining operational APs is dynamically increased.

Abstract: A mobile terminal uses stored GPS data to expedite position determination when placing emergency calls. The mobile terminal receives supporting GPS data such as almanac and ephemeris information from a supporting digital wireless network when digital service is available. When operating in an analog service area where GPS data is not available from the analog wireless network, the mobile terminal uses GPS data previously received in a digital service area, unless that data is too old to be useful. Additionally, the mobile terminal can periodically update its stored GPS data while in standby in an analog service area, based on receiving the needed data directly from available GPS satellites. The mobile terminal or digital wireless network may automatically update GPS data stored in the mobile terminal based on the age of stored data, or based on the probability of moving into an analog service area.

Abstract: An approach for immediate channel assignment in a wireless communications system involves receiving a channel request message from a wireless transceiver, the channel request message including a dialed party number; forming an immediate assignment message including a channel assignment; transmitting the immediate assignment message to the wireless transceiver; and establishing a communications channel between the wireless transceiver and a called party by establishing a channel between the wireless transceiver and the called party.

Abstract: In addition to aligning a first unit for proper forward link communications in a wireless environment, there is a method of alignment where a reverse link signal is transmitted from the first unit to a second unit, so that the first unit may be positioned based on at least one signal quality parameter measure contained in a forward link signal reply to the reverse link signal. The method enables an installer to verify signal quality in both the forward link and reverse link directions by reviewing indications of received signal strength for both the reverse link and forward link directions on an LED display, so as to position the first unit for achieving acceptable signal strength in both directions.

Abstract: A multimode service radio communication apparatus, that provides a hand-held or vehicle-mounted terminal with radio communication and radio broadcasting information of a radio information and communication providing system including mobile communication systems and intelligent transport systems, includes a frequency division multiplexer that integration-converts individual radio or intermediate frequencies modulated for mobile telephones and broadcasts so that the modulated frequencies are included in a specific frequency band, and produces radio signals in the specific frequency band; supply device for supplying the radio signals; an antenna for receiving and transmitting the supplied radio signals; a shared antenna for receiving the transmitted radio signals; and terminals to which specific frequencies in the specific frequency band are selectively linked.

Abstract: Electrical circuit (300, 500, 800, 900) has an input (301, 501, 801, 802, 901, 902) and an output (311, 502, OUT, I-OUT, Q-OUT). The circuit samples an input signal coupled to the input having a certain input frequency and converts the input signal into a certain output frequency at the output, the output frequency being lower than the input frequency. It comprises a first sampler circuit (302, 510, 803, 910) coupled to the input, a second sampler circuit (303, 520, 804, 920) coupled to the input, a buffering component (309, 509, 809, 903, 904) coupled to the output and buffer switching means (305-307, 514, 515, 811-818, 914, 915, 924, 925, 934, 935, 944, 945, 954, 955, 964, 965, 974, 975, 984, 985). The buffer switching means are arranged to respond to a buffering command (fs/N, A, B) by coupling said first sampler circuit and said second sampler circuit to said buffering component.

Abstract: The present invention relates to a cordless communication system with high user capacity, especially cordless communication systems operating under the DECT standard. This system comprises fixed or mobile terminals (T1, T2, T3, T4), radio sets (B1, B2, B3) with which the terminals can communicate, and radio controllers (CR1, CR2) linked groupwise to the radio sets. The collection of radio controllers manages the collection of radio sets. Each terminal continually examines the state of the radio set, saturated or otherwise, onto which it is locked, and then, if the radio set is saturated, triggers a new operation of locking onto another radio set.

Abstract: A mobile station (106) of a wireless communication system (100) detects (502) a predetermined user command applied to a user interface (308) of the mobile station. In response, the mobile station transmits (504), to a fixed portion (110) of the wireless communication system, a message including a request for local information and services. The fixed portion receives (506) the message, and, in response, determines (508) the location at which the mobile station is positioned. The fixed portion then generates (510) A the local information and services custom-tailored to a predetermined area around the location, and sends (512) the local information and services to the mobile station.

Abstract: The invention reduces transient peaks in signals transmitted in CDMA communication systems. A plurality of spread spectrum data signals are combined into a combined signal having fluctuating power level corresponding to the combination of the data signals. The combined signal is modulated to produce an RF signal for transmission. The average power of the combined signal is measured over a selected time period. The combined signal power level is adaptively limited to a calculated power level based at least in part on the measured power.

Abstract: A transmission power control device is for use in a radio communication apparatus. The transmission power control device comprises a processing section for processing an input transmission signal into a processed transmission signal in accordance with a control signal. A power amplifier circuit has a first transistor for amplifying the processed transmission signal into a power amplified transmission signal. The transmission power control device further comprises a detecting circuit for detecting a current flowing through the first transistor to produce a current detection signal. A converting circuit converts the control signal into a reference value signal corresponding to a level of the processed transmission signal. A bias current section compares the current detection signal with the reference value signal to produce a comparison result signal. The bias current section controls a bias current for the amplifier circuit in accordance with the comparison result signal.