Abstract: A transmission method and a base transceiver station applying antenna hopping between at least two antenna elements are provided. According to one embodiment of the invention, a carrier carrying a first signal and a second signal is transmitted. At least a portion of the first signal is subjected to a measurement for adjusting receive characteristics of a mobile station for the reception of at least a portion of the second signal. Antenna hopping is applied to the carrier such that the at least a portion of the first signal and the at least a portion of the second signal are transmitted during an interval between two consecutive antenna hops between the at least two antenna elements.

Abstract: The invention relates to a method and arrangement for establishing a connection between a base station and mobile station. The invention is especially applicable to digital TDMA (Time Division Multiple Access) and CDMA (Code Division Multiple Access) cellular systems which use extended cell operating ranges. An idea of the invention is that when establishing a connection a mobile station transmits access bursts using a preferably extended timing advance different from zero. In one embodiment, different timing advance values are used until a timing advance is found with which the burst falls on a CCCH channel time slot at the base station. The mobile station preferably transmits the first bursts using the normal timing advance, the next bursts using a second timing advance, the corresponding timing advance parameter value being the normal timing advance parameter maximum value+1, and the subsequent bursts using a timing advance of 2×the second timing advance, etc.

Abstract: A method is disclosed for operating a wireless telecommunication system for providing a Multimedia Broadcast/Multicast Service MBMS broadcast transmission from a network operator (10) to a mobile station (100). A first step determines a minimum bit rate requirement to broadcast a MBMS message and a number of radio blocks per time period that are required to satisfy the bit rate requirement. A second step allocates the determined number of radio blocks in accordance with a multislot transmission technique, wherein a plurality of time slots are used per frame, such that the mobile station is provided with at least one idle radio block between two active MBMS transmission periods. The at least one idle radio block may occur between two active MBMS radio blocks. A third step transmits the determined radio block allocation to the mobile station. In the preferred embodiment the step of determining may include a consideration of radio channel conditions and a multislot class of the mobile station.

Abstract: A method for a mobile station and a base station to which the mobile is being handed over, and corresponding apparatuses for use by the mobile and the base station. The method for use by the mobile station is for determining whether dynamic configurations are in use by the base station to which the mobile is being handed over, and the method for use by the base station is for determining whether to use a dynamic configuration (if the base station uses dynamic configurations) or to switch to a static preconfiguration in communicating with the mobile. The base station to which the mobile is being handed over is of one wireless communication system (such as the UTRA wireless communication system) and the base station doing the handing over is of another type (such as GSM). Both base stations are assumed to broadcast control signals on a respective broadcast control channel.

Abstract: An apparatus and method for providing a dynamic mapping of channel numbers to physical frequencies for some cells of a cellular telephone system, for use in case of a cellular telephone system representing physical frequencies by channel numbers and providing a fixed mapping of channel numbers to physical frequencies. The method includes a step of providing an information element indicating the dynamic mapping, and is performed in a way that is compatible with an existing channel numbering space, thereby keeping unchanged any existing signaling messages. The method also provides for a change in a dynamic mapping: a duplicated mapping is broadcast in which two non-overlapping sets of channel numbers are both mapped at least in part to a same frequency block, the broadcasting being continued for a predetermined time assumed to be of sufficient extent that any mobile phones operating in the cells will have decoded the duplicated mapping.

Abstract: The invention relates to a method for improving the quality of control signalling based on signalling messages controlling speech or data transmission over an air interface between at least two radio terminals of a radio communications system, said speech or data being transmitted in at least one traffic channel of said radio communications system, and said signalling messages being transmitted in control channels associated with said at least one traffic channel. In order to allow for an improved performance of SACCH and FACCH, it is proposed that a first and a second signalling message with identical content are transmitted in two separate associated control channels. Alternatively, it is proposed that a signalling message included in a single ACCH is coded with a stronger coding. The invention relates equally to corresponding radio terminals and modules for such units.

Abstract: A method of improving connection quality and system capacity in a cellular radio system is disclosed. Each cell in the cellular radio system has at least one base station (BS) communicating with subscriber terminals (MS) in its area. The method is characterized in that the subscriber terminal transmits in two time slots and receives in two time slots during one frame, and that the subscriber terminal employs the time slots of the frame following the frame used for transmission and reception for measuring neighboring base stations. Owing to the method and cellular radio system, methods developed for improving connection quality and system capacity in a cellular radio system, such as frequency hopping, discontinuous transmission and power control, can be used on the traffic channels of the base station BCCH carrier wave frequency.

Abstract: A method is presented for demodulating and decoding a block of received digital information consisting of a number of subblocks. One of a predefined number of demodulation methods is selected for demodulating each subblock and each subblock is demodulated with the demodulation method selected for it. The subblocks constituting a block of digital information are combined between their demodulation and the decoding of the block of digital information. Soft decoding is used to decode the block of digital information, wherein each subblock is converted to a sequence of soft decoding values associated with certain probabilities of allowed state transitions in the decoding process. For each subblock it is determined, after its demodulation, whether the correct demodulation method was selected for it.

Abstract: The invention relates to a method for transmitting data for a multimedia broadcast/multicast service (MBMS) from a radio access network of a cellular communication network via a radio interface to mobile terminals located in a radio cell supplied by said radio access network. The radio access network transmits paging messages on a common control channel. It is proposed that a dedicated channel is employed for transmitting the MBMS data, which dedicated channel is allocated in a way that the mobile terminals are able to receive simultaneously paging messages and the MBMS data. The invention relates equally to a corresponding network entity, mobile terminal and communication system.

Abstract: The invention relates to a method of facilitating measurement of a transmission level, and a base station. The base station moves its broadcast (BCCH) from one time slot (10 to 17) to another so that the broadcast (BCCH) is sent in different time slots (10 to 17) of successive frames. In the long run, the broadcast (BCCH) is preferably sent in all the time slots (10 to 17).

Abstract: A method is disclosed for operating a wireless telecommunication system for providing a Multimedia Broadcast/Multicast Service MBMS broadcast transmission from a network operator (10) to a mobile station (100). A first step determines a minimum bit rate requirement to broadcast a MBMS message and a number of radio blocks per time period that are required to satisfy the bit rate requirement. A second step allocates the determined number of radio blocks in accordance with a multislot transmission technique, wherein a plurality of time slots are used per frame, such that the mobile station is provided with at least one idle radio block between two active MBMS transmission periods. The at least one idle radio block may occur between two active MBMS radio blocks. A third step transmits the determined radio block allocation to the mobile station. In the preferred embodiment the step of determining may include a consideration of radio channel conditions and a multislot class of the mobile station.

Abstract: A communications system comprising a first plurality of cells operating in accordance with a first mode and a second plurality of cells operating in accordance with a second mode, each of said cells being served by a respective first station, at least one second station arranged to establish a connection with at least one first station, said at least one second station being associated with said first plurality of cells or said second plurality of cells during said connection and means for determining which plurality of cells said second station is associated after said connection has been completed.

Abstract: The invention relates to a method for handling a connection in a mobile system where a direct mode connection is established between at least two mobile stations (MSA, MSB). The method comprises the steps of allocating an available traffic channel to the direct mode connection through a base station (BS) of the mobile network in response to a call sent by one of the mobile stations (MSA), establishing the direct mode connection between the mobile stations (MSA, MSB), and transmitting information concerning the direct mode connection on a control channel between the base station (BS) of the mobile network and one of the mobile stations (MSA) during the direct mode connection.

Abstract: A method is disclosed to distinguish a first type of control channel from a second type of control channel. The method includes steps of (a) transmitting a carrier of the first type of control channel so as to include a first symbol sequence that results, when demodulated, in a sine wave having a frequency with a first offset from the carrier; (b) transmitting a carrier of the second type of control channel so as to include a second symbol sequence that results, when demodulated, in a sine wave having a frequency with a second offset from the carrier; and (c) demodulating a received carrier and detecting whether the carrier includes the first type of control channel of the second type of control channel. In the preferred embodiment of this invention the first symbol sequence is an all zeroes sequence, and the second type of symbol sequence is an alternating ones and zeroes sequence, which results in the first offset being a positive offset, and the second offset being a negative offset.

Abstract: A method and apparatus for data transmission in a time division multiple access (TDMA) mobile communication system, in which one or more time-slots may be allocated to a mobile stations for data transmission. The mobile station indicates, upon setting up a data call, to the mobile communication network a desired level of service for the user data transfer and the mobile communication network assigns the mobile station for a data call a channel configuration consisting of one or more time- slots in connection with call set-up or handover. The assigned channel configuration depends on the resources currently available in the mobile communication network and enables a data channel performance which is within the limits of the desired level of service.

Abstract: For improving data transmission over the radio path between a mobile station and a base station in a mobile telecommunications system, a divider splits a data signal whose speed is higher than the maximum data transfer rate in one frame, into at least two signals of lower speed before transmission over the radio path. The mobile station is allocated at least two traffic channels for the high-speed data transmission so that each of the signals of lower speed is transmitted over the radio path in its respective traffic channel. A combiner combines the signals of lower speed received over the radio path, to reconstitute the original signal at the receiving end.

Abstract: An E-OTD method for locating a mobile station using measurement information related to arrival of signals transmitted from base stations of different operators for obtaining the base station locations. When one operator does not have enough base stations for providing measurement information for location calculation, the SMLC of that operator acquires measurement information of base stations from at least one other operator using SMLC-SLMC communication protocol.

Abstract: The invention relates to a method for identifying base stations of a time division cellular network in a mobile station. An object of the invention is to speed up the identification of new base stations. In accordance with the invention frame timing difference data for the neighbor base stations (301) and/or the broadcast control channel time slot data for the neighbor base stations are transmitted from the serving base station to the mobile station; reception times for the neighbor base stations' system data are determined in the mobile station on the basis of said frame timing differences and/or the broadcast control channel time slot data (302) and system data are read and neighbor base stations are identified (303). The invention is also directed to a mobile station applying the method.

Abstract: The invention relates to a method for identifying base stations of a time division cellular network in a mobile station. An object of the invention is to speed up the identification of new base stations.

Abstract: A method of transmitting inband signaling messages in a mobile telecommunications network using SACCH burst. In order to avoid puncturing a fixed amount of bits out of every SACCH burst for inband signaling, the 40-bit FIRE code of the SACCH is replaced with a shorter CRC code, thereby creating unused bits for carrying the messages. After the SACCH block is shortened, a plurality of dummy bits are inserted into the shortened block prior to applying a ½ convolutional code to obtain the coded block. The coded block is further interleaved, reordered and mapped into 4 SACCH bursts. The dummy bits in each SACCH block are then replaced by the inband signaling for transmission.