Abstract: A wireless communication device for presenting alternative media during an out of signal condition is disclosed. The device comprising a receiver configured to receive a primary media stream. A memory coupled to the receiver to store a secondary media. A user interface to output one of the primary media stream and the secondary media stream. A detector module that detects when a first predetermined characteristic has been met, the characteristic preventing the output of the primary media stream received from the broadcast transmitter. A media selector module that selects between the primary media stream from the receiver and the secondary media from the memory in response to the detector module detecting that the first predetermined device characteristic has been met.

Abstract: A wireless communication device for presenting alternative media during an out of signal condition is disclosed. The device comprising a receiver configured to receive a primary media stream. A memory coupled to the receiver to store a secondary media. A user interface to output one of the primary media stream and the secondary media stream. A detector module that detects when a first predetermined characteristic has been met, the characteristic preventing the output of the primary media stream received from the broadcast transmitter. A media selector module that selects between the primary media stream from the receiver and the secondary media from the memory in response to the detector module detecting that the first predetermined device characteristic has been met.

Abstract: A method in a mobile wireless communication device capable of receiving a paging message transmitted in a series of bursts over successive time frames including receiving (210) not more than one burst of an incoming paging message, determining (220) whether the incoming paging message corresponds to a known paging message, and (230) reducing power consumption of radio circuits of the mobile wireless communication device during time frames when other bursts would be received if the incoming paging message corresponds to the known paging message. If the incoming data does not correspond to the known data, additional burst are received and decoded.

Abstract: A method in a digital video broadcast enabled wireless communication device (400) operating in idle mode including receiving a digital video broadcast program association table including program and corresponding program mapping table packet identifier information, and providing information in the received program association table about a subsequent program association table that has been modified but not yet received by the wireless communication device.

Abstract: A method of remote control of a wireless communication unit (300) operating in a communication network (100) having the steps of creating a message (202) to be delivered to said wireless communication unit (300) by a Content Provider (104); creating at least one instruction (204) for said wireless communication unit (300) by said Content Provider (104); delivering (210) said message and said instruction to said wireless communication unit (300); processing (222) said instruction by said wireless communication unit.

Abstract: The invention relates to a radio communication system in which a time slot of a frame of a multiframe signal allocated to the frequency control channel is modulated using an 8PSK modulation scheme to contain a tone having a frequency which GMSK modulation is unsuited to generate. This enables COMPACT-format signals to be distinguished from GSM-format signals and ensures backwards compatibility with all existing GSM mobile stations.

Abstract: A method in a mobile wireless communication device capable of receiving a paging message transmitted in a series of bursts over successive time frames including receiving (210) not more than one burst of an incoming paging message, determining (220) whether the incoming paging message corresponds to a known paging message, and (230) reducing power consumption of radio circuits of the mobile wireless communication device during time frames when other bursts would be received if the incoming paging message corresponds to the known paging message. If the incoming data does not correspond to the known data, additional burst are received and decoded.

Abstract: A method for increasing information transfer in a communication system, such as a packet-based GPRS/EDGE system, within a mobile station that does not receive and transmit at the same time, includes providing a system with extended multislot capacity. with such extended capacity, transfer rates can be increased by providing a timing advance offset between the uplink and downlink timeslots in order to provide the mobile station sufficient frequency switching time and setup between downlink, uplink, and neighbouring cell measurement operations. As a result, transferring information between the base station and mobile station can be done such that all frequency siwtching and setup between downlink, uplink, and neighbouring cell measurement operations during a frame is completed within two or less timeslots, leaving the remaining greater number of timeslots available for increased information transfer.

Abstract: The invention concerns a method of scheduling the time of transmission of one or more GPRS paging blocks in a cell of a cellular communications system, the paging blocks initiating communication to a mobile terminal in a cellular communications system, comprising calculating the transmission time of the paging block, or the transmission times of the paging blocks, in dependence on: (i) the number N determining which control channel carries the paging blocks of a given terminal; (ii) the number M of GPRS paging blocks on the control channel; (iii) the number KC of control channels in the cell of the cellular communications system; and (iv) the International Mobile Subscriber Identity (IMSI) number of the mobile terminal. The scheduling of the time of transmission of the one or more GPRS paging blocks in the cell of the cellular communications system may even out the distribution over time of the transmissions.

Abstract: This application relates to channel allocation in a TDMA communication system.

Abstract: A method of maintaining time synchronisation of a mobile terminal, of a telecommunications network, said mobile terminal having high speed and low speed clocks, in a deep sleep mode, comprising: when a deep sleep mode is entered, making an initial measurement to establish a frequency relationship between the high speed and low speed clocks, entering a deep sleep mode in which the high speed clock is deactuated, and updating said correlation based on the time of arrival of paging blocks, timed by the low speed clock.

Abstract: Transceiver circuitry 1 comprises a first portion 10,20,30,41,50,100, having a first modulation means 41 operating at a first order of modulation, for transmitting and receiving voice signals; a second portion 20,30,42,50,100, having a second modulation means 42 operating at a second order of modulation, for transmitting and receiving digital signals at a higher data rate than is achievable by the first portion; and a data conversion means 20,30,100 operable to convert from or into voice signals intended for processing by the first portion into or from digital signals for processing by the second portion.

Abstract: The invention relates to a radio communication system in which a time slot of a frame of a multiframe signal allocated to the frequency control channel is modulated using an 8PSK modulation scheme to contain a tone having a frequency which GMSK modulation is unsuited to generate. This enables COMPACT-format signals to be distinguished from GSM—format signals and ensures backwards compatibility with all existing GSM mobile stations.

Abstract: An equaliser 100 for performing equalisation in a radio receiver receiving a signal from a transmitter, there being a Channel between the transmitter and the receiver having a Channel Impulse Response, CIR. The equaliser 100 comprises CIR estimation means 1 for generating a plurality of tap coeffecients; assessment means 2 for assessing the tap coeffecients generated by the CIR estimation means and for outputting an assessment signal; and an equaliser algorithm processing unit 5, adapted to receive the assessment signal, for selecting and performing one of a plurality of different equaliser algorithms on the basis of the assessment signal, whereby when one or more of the tap coeffecients may be disregarded, an algorithm which requires less processing power may be selected and performed in preference to an algorithm which considers all of the coeffecients generated by the CIR estimation means 1.

Abstract: A method and circuit (200, 300) for dynamically adjusting the supply voltage (Vdd) in a digital circuit (204, 404) determines the propagation delay (tpd) of a signal along a signal path (222, 310) in the digital circuit and adjusts the supply voltage so that the determined propagation delay equals a predetermined period, such as the clock period of the clock signal (CLK) which clocks the digital circuit. the determined propagation delay equals the predetermined period, the adjusted supply voltage is applied to the digital circuit (204, 404). This technique can be used to optimise power consumption and processing capability.

Abstract: The invention provides a communications system having a novel multi-frame signal format. Frequency correction information is transmitted in a time slot of a frame immediately preceding a timeslot in which synchronization information is transmitted. The invention allows faster synchronization to a cell in the communication system.

Abstract: A method and circuit for dynamically adjusting the supply voltage in a digital circuit determines the propagation delay of a signal along a signal path in the digital circuit and adjusts the supply voltage so that the determined propagation delay equals a predetermined period, such as the clock period of the clock signal which clocks the digital circuit. When the determined propagation delay equals the predetermined period, the adjusted supply voltage is applied to the digital circuit. This technique can be used to optimize power consumption and processing capability.

Abstract: The invention provides a system for dynamic distribution of processing time during a frame in a station operating in time-division multiple access mode. The system comprises a set of N independent configurable processing resources respectively associated with N time windows in the frame, where N is a predetermined integer greater than 1. The N configurable processing resources can be configured to yield N respective configured processing resources each of which is activated for a respective particular processing operation for which it has been configured. Each of the N previously configured configurable processing resources is activated so that the respective particular processing operations are effected during the frame.

Abstract: A device is provided for selecting reception signals as a function of their power, the reception signals being identified by their frequency and being structured into frames made up by a number of time slots. Power is calculated for each one of the signals being explored using as a basis measurements carried out on several selected time slots that correspond to the signal during a series of repetitive analysis periods. The selected time slot of the first signal explored during an analysis period bearing a number less than or equal to the number of time slots that make up a frame occupies a different position in the frame from the positions that it occupied during preceding analysis periods.

Abstract: A digital signal is equalized, for example in cellular radio systems, to combat intersymbol interference. Each sample received is associated with an estimated symbol representing the transmitted symbol. The equalization process comprises an iterative stage of intersymbol interference elimination, each iteration comprising for each sample of a set of received samples whose value has not been determined during a previous iteration: comparing said sample with at least one confidence threshold and if said sample exceeds any of said thresholds: associating with said sample an estimated symbol whose value depends on said threshold exceeded, the value of said sample being then determined; and eliminating the intersymbol interference caused to other samples belonging to said set of received samples by said estimated symbol.