Abstract: A primary station and at least one secondary station communicate on a downlink control channel in a network, wherein the primary station transmits an indication related to a resource allocated to one of the secondary stations in accordance with a semi persistent schedule, wherein at least two messages, which include at least part of the indication, are transmitted in one subframe.

Abstract: In UMTS WCDMA a new RACH-based uplink is being discussed. The request for uplink transmission resource is made using a mechanism based on the conventional RACH. The main difference from the conventional RACH is that the data transmission uses a high-speed uplink packet data channel, known as Enhanced Dedicated Channel (E-DCH), instead of a single short message associated directly with the RACH preamble. One proposed scheme for indicating the E-DCH resources to be used creates a link between the values of each of a group of multiple signatures sent on the AICH (to acknowledge the E-RACH access) and a specific set of E-DCH parameters defined in a table. We propose to signal the set of resources to be used independently from acknowledging the E-RACH access. One possible method is to transmit information in the unused portion of the AICH (corresponding to 1024 chips every slot) indicating the resource set.

Abstract: A system and method of a primary station giving access to a resource to a secondary station. The secondary station transmitting to the primary station an access request to a resource including a preamble for requesting access to the resource. Each resource is associated in a predetermined way to each preamble. The primary station's response to the access request is modified depending on whether the resource associated with the preamble is available. The primary station transmitting an acknowledgement indication of the access request and signaling independently from the transmission of the acknowledgement indication a set of resources to be used by the secondary station. The primary station's response to the preamble comprises only an acknowledgement when an associated resource is available and comprises an indication of a different resource when the associated resource is not available.

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 non-predetermined data values. Optionally the non-predetermined data values may comprise power control commands for uplink transmit power control.

Abstract: A radio communication station in a radio communication system having a plurality of radio communication devices, derives a quantization parameter from control indications received from respective radio communication devices and transmits the quantization parameter to the radio communication devices on at least one downlink channel. The radio communication devices receive the quantization parameter, determine respective channel state metrics for the downlink channel, respectively quantize the determined respective channel state metrics by applying quantization ranges indicated by the quantization parameter, determine respective control indications indicative of the respective quantized channel state metrics, and transmit to the radio communication station respective signals indicating the determined respective control indications as respective random access transmissions on an uplink channel.

Abstract: The present invention relates to a method for communicating in a network having a primary station and a plurality of secondary stations, said method comprising a step of, at the primary station, (a) configuring at least one downlink channel from the base station to a first secondary station, step (a) comprising (a1) signalling a first set of at least one parameter indicative of precoding applied to a first transmission from the base station to the first secondary station; (a2) signalling a second set of at least one parameter indicative of precoding applied to a second transmission from the base station to at least one second secondary station, wherein said step (a2) is carried out so that the second set of parameters contains less information than the first set of parameters.

Abstract: In a radio communication system using a channel divided into a plurality of timeslots, a data signal and a first control signal are transmitted during one or more first time slots of the plurality of time slots. The first control signal comprising pilot bits and power control commands. A second control signal is transmitted during one or more second time slots of the plurality of time slots. The second control signal comprises pilot bits and power control commands such that a ratio of pilot bits to power control commands in the second control signal is lower than that of the first control signal.

Abstract: A radio communication station in a radio communication system having a plurality of radio communication devices, derives a quantization parameter from control indications received from respective radio communication devices and transmits the quantization parameter to the radio communication devices on at least one downlink channel. The radio communication devices receive the quantization parameter, determine respective channel state metrics for the downlink channel, respectively quantize the determined respective channel state metrics by applying quantization ranges indicated by the quantization parameter, determine respective control indications indicative of the respective quantized channel state metrics, and transmit to the radio communication station respective signals indicating the determined respective control indications as respective random access transmissions on an uplink channel.

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 non-predetermined data values. Optionally the non-predetermined data values may comprise power control commands for uplink transmit power control.

Abstract: The present invention relates to a method for signaling a plurality of transmission parameters for a plurality of communications between a primary station and a plurality of respective secondary stations in a multi-user MIMO mode, comprising the steps of (a) signaling the value of at least one first transmission parameter in a multicast message to at least two secondary stations, the value of the first transmission parameter being common to the respective communications corresponding to the at least two secondary stations, and (b) signaling the value of at least one second transmission parameter in a plurality of unicast messages to each secondary stations of the plurality of secondary stations.

Abstract: A radio communication system comprises a communication channel for the transmission of data packets from a primary station having a plurality of antennas to a secondary station having at least one antenna. The channel comprises a plurality of paths, and the primary station transmits a plurality of packets substantially simultaneously. Each of the plurality of packets is transmitted via a different subset of the plurality of paths, for example by arranging for each packet to be transmitted via a different antenna or antenna beam. The secondary station receives the plurality of data packets, determines whether each packet is received correctly and signals this determination (typically as an acknowledgement or a negative acknowledgement to the primary station for each of the plurality of packets. The signalling may be by any convenient means, for example transmitting each acknowledgement or negative acknowledgement via a different subset of available uplink paths.

Abstract: A method of interference coordination, base station and user equipment. The method comprises: precoding by a macro cell eNB the signals of the downlink control channel of scheduled macro cell UE by using pre-obtained precoded matrixes, such that the signal null space formed by precoding is pointed to pico cells and/or the characteristic value space of the signals is pointed to the macro cell UE. With such a method, almost all the interference caused by the PDCCH of the macro cell to the pico cell is eliminated, and the performances of the macro cell are not affected, solving the problem existed in the prior art; or improving the receiving performance of the macro cell UE, and further alleviating the interference of the macro cell on the pico cells.

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-predetermined data values may comprise power control commands for uplink transmit power control.

Abstract: The present invention relates to a method for requesting access to a resource, the method comprising a secondary station transmitting an access preamble to a primary station, upon failure of correct transmission of the access preamble, the secondary station starting a first power ramping scheme for transmitting the access preamble, upon failure of correct transmission of the access preamble with the first power ramping scheme, wherein the second power ramping scheme comprises transmission in at least one access slot different to that used for transmission of the first access preamble.

Abstract: A radio communication system comprises a communication channel for the transmission of data packets (302) from a primary station having a plurality of antennas to a secondary station having at least one antenna. The channel comprises a plurality of paths, and the primary station transmits a plurality of packets substantially simultaneously. Each of the plurality of packets is transmitted via a different subset of the plurality of paths, for example by arranging for each packet to be transmitted via a different antenna or antenna beam. The secondary station receives the plurality of data packets, determines whether each packet is received correctly and signals this determination (typically as an acknowledgement (304) or a negative acknowledgement (306)) to the primary station for each of the plurality of packets. The signaling may be by any convenient means, for example transmitting each acknowledgement or negative acknowledgement via a different subset of available uplink paths.

Abstract: A packet data transmission system comprises primary stations (PS) having signal transmitting and receiving means and antennas (PA1 to PA4) for propagating downlink signals and receiving uplink signals and a plurality of secondary stations (SS) able to roam within the coverage areas of the primary stations. Each secondary station (SS1) has signal transmitting and receiving means, a predetermined number of antennas (SA1 to SA4), and means for monitoring its radio environment. Information about the radio environment is relayed as an uplink signal to the respective primary station which modifies its mode of transmission of packet data signals. The secondary station in response to the modified mode of transmission of the downlink signals adapts its receiver resources to process the packet data signals and effect cancellation of any interference.

Abstract: The present invention relates to a method for communicating between a primary station and at least one secondary station, comprising configuring each secondary station to search 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 having a first size, where at least one resource set might be used to transmit a message to the considered secondary station, changing the search space structure to a second structure different from the first structure in response to a signalling message.

Abstract: The present invention relates to a method for communicating in a network, said network comprising a primary station and at least a first secondary station, wherein the first secondary station transmits to the primary station an indication of a first plurality of precoding vectors, wherein the number of first precoding vectors is greater than a preferred rank of transmission from the primary station to the first secondary station.

Abstract: The present invention relates to a method for communicating in a network comprising a primary station and at least one secondary station, the secondary station comprising a buffer containing data packets to be transmitted to the primary station, the method comprising the secondary station transmitting an indication of the buffer status to the primary station, whereby the indication comprises information about the history of the buffer.

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 non-predetermined data values. Optionally the non-predetermined data values may comprise power control commands for uplink transmit power control.