Abstract: A method installing a femtocell device in a radio-telecommunications network, wherein the femto-cell device receives from a mobile tele-communication device a set of parameters for connecting the femtocell device to a network access device that provides an access to an Internet Protocol network and connects to a management unit of the radiotelecommunications network, through the Internet Protocol network access, in order to be integrated to the radiotelecommunications network under control of the said first management unit.

Abstract: The present invention relates to a method for controlling communication resources in a cellular communication network (1), the cellular communication network comprising a plurality of cells (A to Q) which are under the control of at least one base station (10) and which use the communication resources to communicate via communication links, wherein a distance between two neighbouring cells of the plurality of cells using a same communication resource is defined to be a re-use distance of said same communication resource.

Abstract: The present invention relates to a method or communicating between a primary station and a plurality of secondary stations, comprising the primary station providing a plurality of resource sets, the primary station configuring a secondary station to search for a control channel on at least one of a plurality of search spaces each corresponding to a resource set, wherein at least part of one of the search spaces is used to transmit a control message to a secondary station, the control message being indicative of a resource allocated to the secondary station for transmitting to the primary station or receiving from the primary station data, and wherein the secondary station deduces from the part of the search space used for transmitting the control message an indication of the resource set from the plurality of resource sets within which the allocated resource is located.

Abstract: The present invention relates to a method for operating a network comprising a primary station communicating with a plurality of secondary stations, the method comprising the primary station communicating with a secondary station in a discontinuous mode; the secondary station transmitting to the primary station a control message based on the current status of the secondary station; the primary station changing a parameter of the discontinuous mode based on the control message.

Abstract: The present invention relates to a method for communicating between a primary station and a plurality of secondary stations, comprising (a) the primary station configuring a secondary station to search on a first channel at least one of a plurality of search spaces having a first structure, said first structure consisting of at least a first number of resource sets, where at least one resource set might be used to transmit a message to a secondary station, (b) the primary station setting a characteristic of the first channel to a first value. (c) the primary station changing the characteristic of the first channel to a second value upon detection of a capacity event in the search spaces.

Abstract: The present invention relates to a method for communicating in a network, the network comprising at least a first cell and a second cell including respectively a first primary station having a first antenna array dedicated to the first cell and a second primary station having a second antenna array dedicated to the second cell, for communicating with a plurality of secondary stations, the method comprising the step of (a) providing with a co-operative beamforming transmission from the first and second primary stations to at least one first secondary station, wherein step (a) includes (a1) the first secondary station signaling at least one channel matrix to at least one of the first and second primary stations, and (a2) the first and second primary stations applying a precoding matrix across both the first antenna array and the second antenna array, and wherein the precoding matrix comprises a first vector for the first cell and a second vector for the second cell, the precoding matrix being based on the at le

Abstract: A method of operating a communications system which comprises a communication station (UE1) and a further station (BS), the stations having means (26, 10) whereby they can communicate with each other, and the communication station having buffer memory means (BUF1 to BUFn) for storing data units in at least one queue. One of the stations (UE1, BS) has means (36) for estimating the transmission delay of at least one of the data units in the at least one queue, and means (30) responsive to the estimated transmission delay exceeding a threshold value for requesting permission from the further station (BS) to enable the communication station (UE1) to transmit at least one data unit to the further station (BS). The further station (i.e. the base station) will either “grant” the permission (in the form of an acceptance of using a certain rate, to transmit to a certain power level, or to transmit for a certain period of time).

Abstract: A system (50) for communicating data packets from a first station (100) to a destination (400) via at least one of a plurality of second stations (200) which are coupled to the destination (400), in which the second stations (200) acknowledge receipt of the data packets. The first station (100) decides whether to retransmit a data packet or to proceed with transmitting the next data packet, the decision being dependent on receiving a plurality of positive acknowledgements or a plurality of negative acknowledgements.

Abstract: Data packets having different assigned priorities are multiplexed by operating a queue for each different priority of data packet and assembling groups (80) of the data packets for transmission. Each group has two portions. A first portion (90) of the group is populated with data packets selected from one or more of the queues according to a first rule and a second portion (95) of the group is populated with data packets selected from one or more of the queues according to a second rule. Preferably the first portion contains data packets having the highest priority, and the second portion contains a selection of the data packets having a lower a priority. Selection of data packets for the second portion may depend on criteria such as delay experienced and queue length. The size of the first and second portions may be adapted according to delay experienced and queue length.

Abstract: A method of operating a communication system in which transmissions in a first direction, say from a base station, comprise frames formed by data packets and transmissions in a second direction, say from a user equipment (U E), comprise substantially continuous transmissions having acknowledgement fields (ARQ-A, ARQ-B) for data packets and transmission gaps (GP) to allow the UE to make other measurements. The acknowledgement fields are mapped to the data packets to enable the base station to determine which data packets are being acknowledged. In order to avoid ambiguity in mapping acknowledgement fields to data packets when a transmission gap occurs, a single data packet is transmitted in either the frame whose acknowledgement field would occur in the transmission gap or the frame whose acknowledgement field would occur immediately following the transmission gap.

Abstract: In a multicast transmission system, the transmission of data is acknowledged by each receiving station to indicate whether or not a retransmission is required. For the retransmission, a transmitting station can select between a broadcast mode in which the retransmission is not addressed to a specific recipient, or a dedicated mode in which the retransmission is addressed to a specific recipient. The selection may be based on the number of receiving stations requiring a retransmission.

Abstract: A transmit power control scheme for use in point-to-multipoint communication uses a random access channel for power control signals transmitted by the receiving stations (200).

Abstract: A method of operating a radio communication system uses a random access channel to enable a secondary station to transmit a message to a primary station. The secondary station transmits a preamble (102) to the primary station. After successful receipt of the preamble the primary station transmits a control channel (502) including power control information to instruct the secondary station to adjust the output power of its transmitter. This method ensures that the secondary station transmits at a sufficient power for the message (104) to be received successfully by the primary station, while minimising interference generated by the transmission.

Abstract: A secondary station has a receiver capable of resolving signals received as a plurality of multipath signals from a plurality of base stations during a soft handover process. This capability may, for example, be provided by a Rake receiver. In order to decode and act upon the received signals in a very short period of time, signals (402g,402h) arriving after a predetermined time are not processed by the receiver which is able instead to process weaker signals (402d,402e) which arrived before the time (t1). Such a secondary station is particularly suitable for decoding and acting upon power control commands included in received signals in a UMTS system, for which a very limited period of time is provided by the UMTS specification.

Abstract: A method is described of controlling a communication system using a continuous FDD channel. Each time segment of the channel is divided into a predetermined number of sub-segments. For a first set of time segments, the communication signal data for the respective time segment is repeated in all sub-segments, and for a second set of time segments, null periods are provided in one or more of the sub-segments during which the communication signal from the first station to the second station is interrupted. The communication signal data is transmitted during the remaining sub-segments of the second set. This approach enables a slotted transmission mode to be established in a CDMA FDD system, without the need to adapt the spreading ratio of the CDMA system.

Abstract: In a mobile communication system comprising a base station (100) and a plurality of mobile stations (200) and operating closed loop transmitter power control, power control commands for transmission on an uplink are derived from measurements made on received downlink signals comprising nonpredetermined data values. Optionally the non-predeterrnined data values may comprise power control commands for uplink transmit power control.

Abstract: A radio communication system (50) which uses a transmit power control loop to adjust downlink (160) transmit power from a base station (100) to a mobile station (200) and periodic reports of downlink channel quality (CQI) transmitted by the mobile station (200) on an uplink (260) to select a downlink transmission parameter, temporarily transmits additional CQI reports in response to an interruption in the transmit power control loop or the CQI reporting.

Abstract: A mobile station (100), when performing soft handover between base stations (200), receives transmit power control commands from each base station (200). The mobile station (100) determines the reliability of each received transmit power control command by measuring its amplitude relative to a reliability threshold, and combines the power control commands to determine how to adjust its transmit power. The reliability threshold is dependent on the number of base stations (200), or the number of “up”and/or “down” commands received over a time period, or a function of a measured characteristic of received signals. Equivalently, instead of varying the threshold, the amplitude of the power control commands may be scaled, where the scaling factor is dependent on the number of base stations (200), or the number of “up” and/or “down” commands received over a time period, or a function of a measured characteristic of received signals.

Abstract: In a radio communication system (50) employing closed loop power control a primary station (100) adjusts its transmit power in response to control information including power control commands received from a secondary station (100). If the primary station (100) fails to obey the power control commands the secondary station modifies the control information and the primary station (100) uses the modified control information to adapt a characteristic of a transmission.

Abstract: A radio communication system comprising a primary station and a plurality of secondary stations has a communication channel for the transmission of information from a secondary station to the primary station. The secondary station can adjust its output transmission power at a plurality of different rates, and the primary station can instruct the secondary station which of the plurality of rates it should use. The primary station determines the optimum rate for the secondary station to use by measurement of characteristics of signals received from the secondary station, for example the average signal to interference ratio, and instructs the secondary station accordingly. Other indications may be used to determine or verify the optimum rate, for example further properties of the received signals or information on the speed of the secondary station.