Abstract: A wireless communication system is disclosed including a MIMO wireless communication apparatus that can communicate through multiple antennas and a non-MIMO wireless communication apparatus that can communicate through a single antenna or multiple antennas. The MIMO wireless communication apparatus includes a communication unit configured to transmit and receive control information divided into a second control information containing information related to the demodulation and decoding of traffic channel and a first control information containing information related to the MIMO separation of the second control information.

Abstract: A communication method in a communication system, wherein the communication system includes a mobile terminal, a communication server that distributes data to the mobile terminal, and plural base stations that are capable of relaying the data, and one of the base stations among the plural base stations is responsible for relaying the data. The communication method includes transmitting, to the communication server, restriction instruction information to restrict a data transmission rate, by a first base station that is responsible for relaying the data among the plural base stations, and hand-overing, by the first base station, causing a second base station different from the first base station to take over the responsibility of relaying.

Abstract: A radio transmission apparatus for transmitting a first radio signal and a second radio signal with different communication system, the apparatus includes: a first transmission unit which generates the first radio signal on the basis of a first communication system and transmits the first radio signal; a diffusion processing unit which performs diffusion processing of data allocated to DC subcarrier on the basis of the first communication system, and generate a diffusion signal; an addition unit which adds the diffusion signal and a signal obtained by orthogonal frequency division multiplex processing; and a second transmission unit which transmits the added signal as the second radio signal.

Abstract: A base station for allocating one or more sub-channels to a mobile station to perform uplink wireless communication with the mobile station through the one or more sub-channels, including an estimation unit to estimate a propagation environment for radio waves from the mobile station to the base station; a calculation unit to calculate an interference amount based on a reception power at the base station apparatus; and a determination unit to determine a modulation method, an encoding ratio, and a number of sub-channels, which are to be used by the mobile station for transmission to the base station, based on the propagation environment, the interference amount, and specification conditions of the mobile station, to notify the mobile station of the modulation method, the encoding ratio, and the number of sub-channels.

Abstract: An inter-cell interference mitigation signaling method for controlling the use of a plurality of inter-cell interference mitigation methods during wireless communications between a first wireless communications apparatus and a second wireless communications apparatus, the method comprising performing a system configuration procedure to select one or more of the inter-cell interference mitigation methods for use during the wireless communications between the first wireless communications apparatus and the second wireless communications apparatus; performing an initiation procedure to start the use of the one or more selected inter-cell interference mitigation methods in response to the meeting of the predetermined initiation criteria; and performing a termination procedure to end the use of the one or more selected inter-cell interference mitigation methods in response to the meeting of predetermined termination criteria.

Abstract: First paging information is determined in advance according to the characteristics of delivered data for each channel of delivered multicast data, and the multicast data delivery frame of each channel is determined based on the first paging information. Paging information (second paging information) for a mobile station which selects a channel is determined from the first paging information determined for each selected channel. Due to this, multicast data delivery frame can be overlapped (is synchronized) with frames for monitoring for paging announcements, and power consumption for an MS in the idle mode can be reduced.

Abstract: The present invention provides method and apparatus for designing modulation and coding set of communication System. The method for designing modulation and coding set designs a proper set of modulation and coding schemes (MCS), based on probability distribution of the quality of received signal in the communication system, so as to optimize the whole performance of the communication system. The method comprises the steps of: acquiring the probability distribution of the quality of the received signal in the communication system; performing a calculation on the target performance of the communication system based on the acquired probability distribution of the quality of the received signal and a plurality of MCSs, to design a proper set of MCSs for the communication system, so that a region where the probability of the quality of the received signal appears more frequently are provided with more levels of the MCSs.

Abstract: In a mobile communication system, when a receiving condition is deteriorated to the extent that reception does not succeed even by means of combination after retransmission to the maximum number of retransmissions, a transmission rate is restricted by reducing radio frames assignable to new data, and by setting dedicated retransmission frames, to which retransmission data are assignable, over the maximum number of retransmissions for the reduced transmission rate, thereby enabling a greater number of retransmissions than the maximum number of retransmissions without an increase of a buffer size. By this, a combination gain through retransmission is improved and a retransmission failure rate is decreased.

Abstract: Provided is a connection supporting apparatus for supporting to establish a VPN through an IKE between a client and a gateway, comprising, a mode judging unit receiving authentication information of the client employed in the IKE, and judging whether or not a key exchange mode of the client is a main mode based upon the authentication information, a VPN setting request transmitting unit transmitting a VPN setting request to the gateway when the key exchange mode of the client is the main mode, the VPN setting request containing a client IP address as an authentication ID and information as to a communication key to be used when the client executes the IKE; and a notifying unit notifying both the communication key and the IP address to the client when the notifying unit receives a response with respect to the VPN setting request from the gateway.

Abstract: The present invention discloses a wireless mobile communication system for transferring MBMS data from an access gateway to plural wireless base stations and transmitting the MBMS data from the plural wireless base stations to a wireless mobile station at the same time. The system includes a transferring part included in the access gateway for copying the MBMS data in a number corresponding to the number of the plural wireless base stations, adding a header indicative of data transmission time to the MBMS data, and transferring the MBMS data to the plural wireless base stations; a transmitting part included in each the plural wireless base stations for extracting the data transmission time from the header of the transferred MBMS data, deleting the header from the MBMS data, and transmitting the MBMS data to the wireless mobile station.

Abstract: A wireless communications node, being included in a multi-hop route starting from a source node and terminating at a destination node, has a receiving part configured to receive signals including transmission data prepared by the source node and transferring the received signals to a succeeding node, a preparing part configured to prepare source node data including at least identification data of the source node based on a predetermined portion of the transmission data, and a reporting part configured to report the source node data and relay data to a management node that manages cost data of plural nodes included in an ad hoc network. The relay data include the cost data and station data including at least identification data of the wireless communications node.

Abstract: A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information.

Abstract: A scheduling method for a base station which transmits an identical packet or data to mobile stations via a plurality of transmission antennas based on a transmission diversity system is provided. In this scheduling method, a first transmission phase for each mobile station is monitored when a packet is diversity-transmitted to each of the mobile stations using a shared channel, and a second transmission phase for each mobile station is monitored when data is diversity-transmitted to each of other mobile stations using a dedicated channel. Then a degree of interference in all the dedicated channel mobile stations, which is generated when a packet is diversity-transmitted to a shared channel mobile station, is calculated using the first and second transmission phases for each shared channel mobile station, and a packet is transmitted preferentially to a shared channel mobile station whose degree of interference is the lowest.

Abstract: The present invention is directed to a method and system for measuring the biologically based responses of an audience to a presentation that provides sensory stimulating experience and determining a measure of the level and pattern of engagement of that audience to the presentation. In particular, the invention is directed to a method and system for measuring one or more biologically based responses of one or more persons being exposed to the presentation in order to determine the moment-to-moment pattern and overall level of engagement. Further, the invention can be used to determine whether the presentation or the content in the presentation is more effective in a population relative to other presentations (or content) and other populations and to help identify elements of the presentation that contribute to the high level of engagement and the effectiveness and success of the presentation for that population.

Abstract: A system and method provide measurement of round trip delay and jitter in an optical network without adding cost to the components of the network. A method of determining round-trip delay and jitter in an optical network comprises the steps of a) transmitting a test frame over the optical network to a device on the optical network, b) receiving a looped-back test frame from the device over the optical network, and c) determining a round-trip delay measurement using the received looped-back test frame.

Abstract: A wireless communication device performing wireless communication by switching between transmission timing and reception timing in time division, controls to supply a heater or a fan with power supplied from a power supply unit in the reception timing period, and controls to suspend supplying the heater or the fan with the power supplied from the power supply unit in the transmission timing period, in case that a temperature detected by a temperature detector is outside a specified temperature range while a time-division switchover between the transmission timing and the reception timing is performed.

Abstract: A signal processing apparatus includes a first filter on an in-phase signal channel; a second filter on a quadrature signal channel; a plurality of filter stages having each of more than one signal paths crossing each other which connects the first filter and the second filter; and at least more than one of the filter stages of more than one of a plurality of the filter stages includes a switching circuit disconnecting more than one of the signal paths and a correction unit correcting direct current offsets of the first filter and the second filter by using the switching circuit.

Abstract: In a wireless transmitting/receiving device of TDD system etc., a transmission signal is detected on the transmitting side in a specified transmission period, a signal reflected from an antenna through a circulator is detected on the receiving side in the transmission period and a reception signal is detected on the receiving side in a specified reception period. In this case, in a part of the transmission period a transmission signal having been detected on the transmitting side is selected while in the remaining part of the transmission period a reflection signal having been detected on the receiving side through a circulator from an antenna is selected, and in the reception period a reception signal having been detected on the receiving side through the circulator from the antenna is selected and outputted.

Abstract: The wireless base station sends control data relating to the processing, belonging to the upper layer (the second layer) of the first layer, to the wireless terminal through the downlink channel. Upon reception of the control data through the downlink data channel, the wireless terminal sends the response data, as a response to the control data, to the wireless base station through the control channel. The wireless base station detects the response data from the received data through the control channel, and then controls the processing belonging to the upper layer based on the response data. The above processing eliminates establishing a data channel to the wireless base station only for the response data as a response to the processing belonging to the upper layer.

Abstract: The invention concerns an arrangement for supervising and/or controlling the bit rate of data pulses that are transmitted from a transmitter (16) to at least one optical conduction path (22). The transmitter (16) has an input side (18) which receives electrical pulses from an electric connection (14) and an output side (20) from which light pulses are transmitted in response to the received electrical pulses. The arrangement comprises a supervising unit (24) with at least one input (26) which is suited to be connected to said electric connection (14). The supervising unit (24) is arranged to estimate or determine the bit rate of the pulses that are received at said input (26). The arrangement is arranged to carry out at least one measure which depends on the estimated or determined bit rate.