Abstract: A mobile communication system and method utilizing Orthogonal Frequency Division Multiplexing (OFDM) receives channel quality information (CQIs) for subcarriers through which reference signals are transmitted and subcarriers through which data signals are transmitted, in subbands, each including a predetermined number of subcarriers among a plurality of the subcarriers. The CQIs are received from respective receivers. Resources are dynamically assigned to the respective receivers according to the feedback CQIs, thereby enabling dynamic resource assignment with minimized signaling overhead.

Abstract: In a wireless communication system, an apparatus and method for managing an uplink communication between a network and a plurality of terminals is achieved by transmitting a response condition parameter from the network to the plurality of terminals subscribing to a multicast service. The parameter is associated with controlling the uplink communication of the plurality of terminals. The terminals then applies the response control parameter to a predetermined test and responds to the network if the terminal determines that it is qualified to respond to the network in response to a result of the predetermined test. The network evaluates whether the parameter needs to be transmitted to the plurality of terminals and whether the parameter needs to be updated based on at least part of responses received by the network.

Abstract: In a UMTS wireless communication system, the enhanced dedicated physical control channel (E-DPCCH) that is usually always transmitted together with the enhanced dedicated physical data channel (E-DPDCH) on the uplink from a UE to a NodeB is instead only transmitted when a predetermined “start criterion” is met and is turned off when a predetermined “stop criterion” is met until a “start criterion” is later met again. The UE starts transmitting E-DPCCH whenever the corresponding E-DPDCH transport format combination is different from the previous one in the same HARQ process or some other “start criterion” is met. Multiple mechanisms can be used to decide when the UE should switch off E-DPCCH transmission after the transport format combination of E-DPDCH has changed.

Abstract: Methods and systems for implementing trunking techniques in CDMA systems for handling group calls and push-to-talk services.

Abstract: A method and system is disclosed wherein timeslots designated in a wireless communication system as Common Physical Channel (CPCH) timeslots may be reused for user traffic. A CPCH timeslot used in a first cell may be reused by a second cell, assuming the first and second cells transmit control information in different CPCH timeslots, for user traffic. The second cell is permitted to reuse the timeslot in which the first cell is transmitting control information so long as the second cell's reuse of that timeslot does not degrade reception of control information in the first cell.

Abstract: A wireless communication network (100) wherein information is communicated in frames comprising multiple sub-frames, including grouping a terminal in first and second groups, assigning the first and second groups to less than all sub-frames in a frame, assigning a control channel of at least one assigned sub-frame to the first and second groups.

Abstract: A system and method for reducing latency includes receiving at a gateway time division multiplexed data from multiple sender devices, the time division multiplexed data including payloads. The method also includes a generated packet that includes the payloads from the received time division multiplexed data from the multiple sender devices. The method also includes indicating in the generated packet a destination indication associated with at least some of the payloads of the received time division multiplexed data and forwarding the generated packet to a media server.

Abstract: A method of controlling signal power level and a Bluetooth device for performing the same are provided. The method for controlling a power level of a signal to be transmitted to a remote Bluetooth device via a Bluetooth link, comprises: a local Bluetooth device for receiving a first signal from a remote Bluetooth device for determining if the remote Bluetooth device is providing a request to control a power level of the first signal to be transmitted; determining if a power level of a second signal is to be controlled based on a condition of a wireless link when the remote Bluetooth device does not provide the request to control the power level of the first signal; and controlling the power level of the second signal to be transmitted to the remote Bluetooth device.

Abstract: This invention addresses the problem of latency of response regarding information relying on an IMEISV from a CN. This is possible by defining the early RRC connection bits' indication to determine the supported signalling schemes and providing the IMEISV information from the terminal to the network. After this point the CN is able providing this mapping information to the radio access network before actual radio links are utilized. The idea here is for early RRC message information to be used for indicating what version of bitmap correction terminal capabilities refers to and what procedures can be utilized while waiting for this bit map information from the CN. Using this approach the length of the early RRC message can be kept short, the content of corrections can be well defined saving signalling bits, and the concern of a fast available indication on the connection set-up phase can still be addressed.

Abstract: Methods and apparatus related to assignment in a wireless communications system are described. A mobile is assigned an identifier and a mask value, e.g., as part of a state transition message. The mobile uses the assigned identifier and/or the assigned mask value in determining whether assignments included in assignment messages, e.g., traffic channel assignment messages, are directed to the wireless terminal. Predetermined associations between assignment slots, assigned segments, and/or mask values are utilized to limit control signaling overhead. Different groups of segments are available for assignment to different wireless terminals as a function of mask values. Different types of assignment messages use different amounts of information bits to convey the assignment. Some types of assignments use a wireless terminal identifier, while other types of assignments use a wireless terminal identifier and a mask identifier. The mask identifier, e.g.

Abstract: The present invention provides a wireless communication system capable of managing peer-to-peer (P2P) communications. In one embodiment of the invention, upon receiving a request for initiating a call, the system determines whether P2P communication can be established between the two mobile terminals. The system also determines an operating mode of the two mobile terminals for P2P communication. If the P2P communication can be established between the two mobile terminals and both mobile terminals are in a default mode for P2P communication, the system establishes P2P communication between the two mobile terminals. On the other hand, if any one of the mobile terminals is in a prompt mode, the system sends a prompt to the mobile terminal in the prompt mode, along with information about incentives for using P2P communication services.

Abstract: In a wireless communication system, an apparatus and method for managing an uplink communication between a network and a plurality of terminals is achieved by transmitting a response condition parameter from the network to the plurality of terminals subscribing to a multicast service. The parameter is associated controlling the uplink communication of the plurality of terminals. The terminal then applies the response control parameter to a predetermined test and responds to the network if the terminal determines that it is qualified to respond to the network in response to a result of the predetermined test. The network evaluates whether the parameter needs to be transmitted to the plurality of terminals and whether the parameter needs to be updated based on at least part of responses received by the network.

Abstract: The present invention provides a wireless network system for establishing peer-to-peer communication between mobile terminals. Upon determining that peer-to-peer communication can be established between two mobile terminal, the wireless network system transmits to each of the mobile terminals information about radio resources used by the other one of the mobile terminals. Each mobile terminal then uses the radio resources information to test the characteristics of a dedicated uplink channel between the other one of the mobile terminals and the network system. Thus, no separate radio channel needs to be allocated for the channel testing. Furthermore, each mobile terminal uses the same radio resources to establish a dedicated radio channel in the peer-to-peer communication with the other one of the mobile terminals, which were previously used by itself for communication with the network system on the dedicated uplink channel.

Abstract: An estimator 120 of a mobile station 100a of the present invention estimates traveling speed information which is a value variable with either a traveling speed of the mobile station or a variation in the traveling speed. A comparison unit 130 or a comparison unit 320 compares the traveling speed information estimated by the estimator with a threshold defined as a value of traveling speed information for achieving a desired level of communication quality which varies depending on the traveling speed. A selector 150 or a selector 340 selects an applicable frequency band in response to a result of comparison.

Abstract: A frame format for high data throughput wireless local area network transmissions includes a first preamble segment, a second preamble segment, and a variable length data segment. The first preamble segment includes a first training sequence, a second training sequence, and a high throughput channel indication, wherein the first training sequence is within a first set of subcarriers of a channel and the second training sequence is within a second set of subcarriers of the channel, wherein the first set of subcarriers is a subset of the second set of subcarriers. The second preamble segment includes a third training sequence within a third set of subcarriers of the channel, wherein the second set of subcarriers is a subset of the third set of subcarriers. The variable length data segment utilizes the third set of subcarriers to convey data.

Abstract: An apparatus and method for communications of scheduling information of reverse link transmissions are disclosed. A base station controller determines scheduling of a reverse link supplemental channel transmission for a mobile station in a communication system (100). The base station controller groups the mobile station in a group of mobile stations and assigns a forward link channel assignment channel to the group of mobile stations. A transceiver (400) incorporates information relating to the determined scheduling in the assigned forward link common assignment channel and transmits the assigned forward link common assignment channel to the mobile station for scheduling the reverse link supplemental channel transmission. The mobile station receives the assigned forward link common assignment channel.

Abstract: A subcarrier assignment apparatus and a subcarrier assignment method, in which each of a plurality of Base Stations (BSs) constituting an Orthogonal Frequency Division Multiple Access (OFDMA) communication system provides services in the capacity of a serving BS to Mobile Stations (MSs). Channel quality information for the respective MSs are fed-back from the respective BSs. Subcarriers are assigned to the respective MSs according to a corresponding scheduling scheme in consideration of the channel quality information for the respective MSs, which are fed-back from the respective BSs, and then BSs which manage the subcarriers assigned to the respective MSs according to the corresponding scheduling scheme are selected. These operations provide site diversity to each of the MSs, and thus system capacity is maximized.

Abstract: In a communication network having a plurality of units and a distributed MAC protocol, wherein data is exchanged between units during at least some of the time slots in a succession of time slots, a method is provided for establishing a desired network configuration. The method includes the step of designating one of the units as a supervisory unit and the other units as non-supervisory units. Certain of the time slots are designated as supervisory priority slots. All of the non-supervisory units are required to monitor transmissions from the supervisory unit during each of the supervisory priority slots, and the supervisory unit is operated to transmit an instruction establishing the desired network configuration only during one of the supervisory priority slots.

Abstract: A method for transmitting a character message in a mobile communication terminal during a conversation by telephone comprises the steps of setting the mobile communication terminal to a character message-transmitting/receiving mode. The character message-transmitting/receiving mode is set while in a state in which a speech path has been established between the mobile communication terminal and a mobile communication terminal of a party other than the user. A character message is input at the mobile communication terminal by the user while in the character message-transmitting/receiving mode. Also while in the character message-transmitting/receiving mode, the mobile communication terminal processes the written character message and transmits the written character message to the mobile communication terminal of the other party via the established speech path.

Abstract: A user control channel for a wireless digital subscriber line systems and the like, or other communications systems which can benefit from a control channel which provides a low data rate connection between stations on an ongoing basis, makes efficient use of transmission capacity in the communications systems. In one embodiment, the user control channel has a structure employing slotted frames, and a user can be assigned multiple slots, a single slot or less than a single slot (sharing slots with other users) to meet the data transmission needs of the user. Also, one or more slots can be designated as random access slots which users can access via an Aloha-like or other random access protocol as needed.

Abstract: Disclosed herein are a method of switching a communication mode to voice communication in response to a voice communication request during data communication in a mobile station and a system for managing a service using the same. According to the method and service management system of the present invention, it is possible for a user to make voice communication when the data communication is operating, by notifying a called party in data communication through a short message service (SMS) that a voice communication request is received, switching the data communication in progress to an idle state according to the called party's response to the voice communication request so that the voice communication can be made, and resuming the data communication interrupted during the idle state after the voice communication is terminated.

Abstract: A system, method and computer readable medium for communicating data over a voice channel on a wireless device (300) is disclosed. The method on a wireless device (300) includes establishing an audio connection with a second device and providing an interface (326) for a user for sending data to the second device. The method further includes detecting the activation of the interface (326) by the user and sending a first data to the second device during the audio connection with the second device, wherein the quality of the audio connection is not affected by the sending. The method further includes receiving a second data from the second device, the second data being associated with the first data and preferably synchronizing the first data with the second data. Information, such as Vcard information, can be wirelessly exchanged between devices communicating data over a voice channel during an audio connection.

Abstract: Various method and apparatus provides for a method and apparatus for a communication system to efficiently use the traffic channel resources for communications of control data. A controller receiving a transmission indicator of a control message for transmission from a base station to a mobile station over a traffic channel. The controller selects a traffic channel dormant timer based on the transmission indicator. A network entity may send the transmission indicator to the base station. The transmission indicator of the control message is determined based on at least one of extent of communications and size of data of the control message between the mobile station and the base station. The controller sets up a traffic channel for transmission of the control message with the selected traffic channel dormant timer. The traffic channel is torn down after expiration of the selected traffic channel dormant timer.

Abstract: A multi-hop wireless Ad-Hoc network according to the present invention employs a voice reservation protocol. The protocol supports voice and data communication and incorporates retransmission and acknowledgement mechanisms. A TDMA frame architecture is dynamically selected depending on voice mode operation (e.g., simplex/duplex) and associated retransmission/acknowledgement mechanisms. A source node transmits a reservation packet that embeds TDMA frame architecture and other information. The packet is transmitted to a destination node and is further piggybacked on existing neighbor discovery packets to reduce overhead. Each intermediate network node along the propagation path determines the manner in which to accomplish slot reservation based on the embedded information in the reservation packet. The protocol may use separate dedicated channels or a single channel for voice and data, and supports voice/data load balancing over different channels.

Abstract: A method and communication system (e.g., a time-division duplex (TDD) system) that uses adaptive antennas at the base stations to monitor metrics associated with the quality of one or more common physical channel (CPCH) timeslots, so as to determine whether to reuse some or all of the CPCH timeslots to transmit a dedicated physical channel (DPCH). If it is determined to reuse some or all of the CPCH timeslots, an additional determination is made as to what limit to apply on the DPCH transmission powers. Adaptive antennas may be used at the base stations to allow the system to reuse some or all of the CPCH timeslots to transmit DPCH, thus improving the overall capacity of the system while maintaining the CPCH coverage and quality at a desired level throughout the system.

Abstract: A method for characterizing base station processing and memory capabilities in a wireless communications system enables resource allocation to take these capabilities into account and to make allocations that avoid base station overload. A method for allocating resources in a wireless communication system including a base station and a radio network controller (RNC) begins by receiving an allocation request for a new service at the RNC. A set of resources is selected by the RNC to allocate to the new service, taking into account the capabilities of the base station. The allocation request is executed by the RNC if a set of resources can be found that does not exceed the capabilities of the base station.

Abstract: A method for allocating orthogonal codes, whereby the product of a number of active users in the system and the average number of sectors servicing each user is determined, and sufficient orthogonal codes are allocated to service the product of F and the optimal number of active users in the system. At least one message is transmitted for reception by at least one mobile station, the message indicating the number of allocated orthogonal codes.

Abstract: A base station apparatus for controlling power of individual control information transmitted to mobile stations. A first mobile station receives its own control information, and a second mobile station receives its own control information and control information for the first mobile station. A receiver receives information on forward channel conditions of the mobile stations for a previous time period. A channel transmitter transmits individual control information to the first mobile station and the second mobile station for a preset time period. A required transmission power calculator calculates power levels required for transmitting control information to each of the mobile stations for the preset time period taking into consideration the forward channel condition of each of the mobile stations and transmission power used for transmitting control information to each of the mobile stations for the previous time period.

Abstract: A communication system (100) includes an aircraft (120) that acts as a repeater between ground equipment (101) and communication units (128) on the ground. The ground equipment (101) includes multiple base transceiver stations (104, 106, 108) that provide traffic channels, control channels, and access channels. The channels are all in a single beam (124) projected from aircraft (120). Relative loading on access channels is influenced by access class lists (200, FIG. 2) assigned to control channels. Access classes can be transferred from one list to another, or they can be removed from a list. Relative loading of traffic channels on the base transceiver stations is influenced by assigning different time offsets to base transceiver station so that calls can be transferred from one base transceiver station to another.

Abstract: A method and system for re-direction and handoff for pre-paid mobile services in third generation (“3G”) networks. A handoff marker is created and used for wireless mobile nodes such as Mobile Internet Protocol (“Mobile IP”) nodes. The handoff markers allow the wireless mobile nodes to use pre-paid mobile services, have active communications sessions suspended and re-directed to a registration server when purchased pre-paid mobile services run-out. The registration server allows the wireless mobile node to electronically purchase additional pre-paid mobile services and immediately resume a suspended communications session. The handoff markers also allows network devices in a mobile network to determine between initiation of a new communications session or a hard handoff of an existing communication session, without adversely affecting pre-paid billing services.

Abstract: A method and system is disclosed wherein timeslots designated in a wireless communication system as Common Physical Channel (CPCH) timeslots may be reused for user traffic. A CPCH timeslot used in a first cell may be reused by a second cell, assuming the first and second cells transmit control information in different CPCH timeslots, for user traffic. The second cell is permitted to reuse the timeslot in which the first cell is transmitting control information so long as the second cell's reuse of that timeslot does not degrade reception of control information in the first cell.

Abstract: An optimized utilization of the resources of a mobile radio network including a number of channels suitable both for the transmission of data and of voice is achieved by a mobile radio telecommunication network and a method for allocating a channel requested for a telecommunication link via a telecommunication network between a caller and a called party. Preferentially, a physical channel having a different wanted-to-unwanted signal ratio is selected when a data channel is requested than when a voice channel is requested.

Abstract: In a radio communication system in which packet communications are carried out by setting up one or more connections between the radio base station and radio terminals, a radio base station or a radio terminal carries out the timeout control in which any packet that cannot be received completely through one connection within a timeout interval that is set in advance with respect to the one connection is regarded as lost, a change in a number of active connections that are currently carrying out communications with the radio base station is detected, and a new timeout interval is calculated and set with respect to each connection when the change in the number of active connections is detected.

Abstract: Method and apparatus for providing a multi-channel, multi-user wireless intercom, comprising a plurality of multi-channel wireless transceiver radios configured to form a radio unit. Each user in a group of users employs a radio unit to communicate with other users in the group. Users may selectively communicate with another user or broadcast simultaneously to all users in the group. Additionally, subnets between users may be formed where communications take place among a number of selected users comprising less than the entire group of users. Receive and transmit audio combiners are employed such that users can hear communications traffic on one or more channels and transmit on one or more channels, simultaneously.

Abstract: A method and communication system (e.g., TDD system) that uses adaptive antennas at the base stations to monitor metrics associated with the quality of one or more CPCH timeslots, so as to determine whether to reuse some or all of the CPCH timeslots to transmit the DPCH. If it is determined to reuse some or all of the CPCH timeslots, an additional determination is made as to what limit to apply on the DPCH transmission powers. Adaptive antennas may be used at the base stations to allow the system to reuse some or all of the CPCH timeslots to transmit DPCH, thus improving the overall capacity of the system while maintaining the CPCH coverage and quality at a desired level throughout the system.

Abstract: The present invention relates to a communication system comprising devices (2a-2d) having means for short range communication using a certain frequency band. The frequency band is divided into communication channels. In the communication system some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices. The present invention also relates to a communication device for communication in a communication system, the device having means for short range communication using a certain frequency band, which is divided into communication channels. The present invention further relates to a method for performing communication in a communication system comprising devices, which have means for short range communication using a certain frequency band, which is divided into communication channels.

Abstract: A dual mode mobile unit is arranged to communicate in either a first or second data communications standard, such as combined Bluetooth and 802.11 operation. An interface unit converts received Bluetooth or 802.11 format signals into 802.11 frame format data signals to be provided to a digital signal processor which is programmed to process signals in either standard. The dual mode mobile unit can operate in the 802.11 standard to reserve a time interval for Bluetooth activity during which other 802.11 units will avoid-transmissions to avoid interference.

Abstract: An extra capacity radio base station for a wireless communication system. A first radio base station provides wireless communication to at least one sector of the wireless communication system. The first radio base station couples to a first group on n radios. A second radio base station couples to the first radio base station, and the second radio base station also provides wireless communication to the at least one sector. The second radio base station couples to a second group of n radios. The first radio base station coupled to the second radio base station creates the extra capacity radio base station. The extra capacity radio base station utilizes on extra control radio to create 2n+1 radios available for voice and data communication to the at least one sector of the wireless communication system.

Abstract: A Method and system for transmitting a signaling message between a base station and a mobile station over a half rate channel are shown. Traffic data is interleaved over k bursts diagonally (4 bursts diagonally in GERAN) and a signaling message is interleaved over m bursts diagonally, where m>k. The method includes transmitting the same encoded signaling message in two consecutive radio packets, where each radio packet is interleaved over k bursts diagonally (the consecutive radio packets have an interleaving depth of 6 in GERAN). By doing so the coded bits of the signaling message are effectively interleaved over two radio packets, and m>k. The receive side of the communication reads the first packet, stores the soft values for decoding, and soft combines them when the second radio packet is received. Diversity may be added by the transmit side. The re-transmission of the second radio packet is preferably mandatory at call set-up.

Abstract: A mobile terminal communication system is disclosed wherein, when communication interruption occurs, communication is re-started automatically without labor by a user to perform a call re-origination operation. If communication is interrupted by deterioration of a radio circuit condition between a fixed terminal and a mobile terminal, then an automatic call origination control section automatically originates a call to the fixed terminal and the mobile terminal based on subscriber number information stored in a subscriber number storage section of an exchange and information of a radio service area; in which the mobile terminal is present, stored in a position information database section. If a response is received from both of the fixed terminal and the mobile terminal, then communication is re-started.

Abstract: In a system handling communication between base transceiver stations (BTS1-BTS12) and base station controllers (BSC) of a cellular radio network the transmission capacity is composed of a predetermined number of capacity units (T0-T31). At least one capacity unit (TCH) can be allocated to a given base station group which comprises at least two base transceiver stations. Said capacity unit is allocated to a certain base transceiver station in the base station group when the instantaneous volume of traffic handled by said base transceiver station requires temporary allocation of additional capacity, and said capacity unit is again released so as to be allocatable to the base station group when the instantaneous volume of traffic handled by said base transceiver station no longer requires temporary allocation of additional capacity.

Abstract: Disclosed is a method for transmitting a paging message for a broadcast service in a mobile communication system having a plurality of user equipments (UEs), a plurality of cells where the UEs are located, a Node B occupying the cells, and a radio network controller (RNC) controlling the Node B, the system providing the broadcast service transmitted from a core network to the UEs via the RNC. In the method, the core network transmits information on UEs in a connected mode among UEs desiring to receive the broadcast service to the RNC along with the paging message for the broadcast service.

Abstract: A method and system for providing a broadcast or multicast service to a terminal device in a data network, wherein a connection state of the terminal device is switched to a dedicated channel state in which a dedicated physical channel is allocated to the terminal device, in response to a broadcast service notification. Thereby, point-to-point connections can be used for data transmission of said broadcast or multicast service, without requiring any additional responses from the concerned terminal devices.

Abstract: Method and apparatus for updating a subscriber unit with an announcement group identification. A subscriber unit (210) requests affiliation (301) with a talk group (202) and an unknown announcement group identification is issued (315) in response to the request for affiliation. The present invention includes an embodiment where information that identifies which subscriber unit (210) received the unknown announcement group signal is stored (309). An updated announcement signal is subsequently sent to the subscriber unit (210) when a zone controller (114) receives an updated announcement group identification.

Abstract: A determination section 301 determines whether or not a DSCH has been assigned to the communication terminal apparatus in question, and outputs a signal indicating the result of that determination to a transmission controller 102, and the transmission controller 102 changes as appropriate the degree of frequency of transmission of a signal containing shared channel information according to the result of determination by the determination section 301. That is to say, the transmission controller 102 outputs a signal containing shared channel information to a modulator 103 with a high degree of frequency when the DSCH has been assigned to that terminal, and outputs a signal containing shared channel information to the modulator 103 with a low degree of frequency when the DSCH has not been assigned to that terminal.

Abstract: Disclosed is a channel resource management method in a base station using a dynamic function in a mobile communication system, in which a real-time conversion of a traffic channel to an overhead channel using a dynamic function is allowed when a trouble occurs in the overhead channel of a base station of a mobile communication system adopting code division multiple access(CDMA) system like digital cellular system(DCS) or personal communication system (PCS), and normal servicing of terminal can be maintained by a minimum channel resource conversion resulted from an effective management of channel resource.

Abstract: Method and apparatus for providing a multi-channel, multi-user wireless intercom, comprising a plurality of multi-channel wireless transceiver radios configured to form a radio unit. Each user in a group of users employs a radio unit to communicate with other users in the group. Users may selectively communicate with another user or broadcast simultaneously to all users in the group. Additionally, subnets between users may be formed where communications take place among a number of selected users comprising less than the entire group of users. Receive and transmit audio combiners are employed such that users can hear communications traffic on one or more channels and transmit on one or more channels, simultaneously.

Abstract: Access is provided in a wireless communications system including at least one base station operative to communicate with one or more terminals over a forward control channel and a reverse control channel. A high-penetration channel reservation status is transmitted indicator from a base station in a plurality of slots assigned to a high-penetration forward control channel, such that the high-penetration channel reservation status indicator has a redundancy greater than that of a channel reservation status indicator transmitted over the forward control channel. Transmission of the high-penetration channel reservation status may be preceded by transmission of a high-penetration access request from a terminal in a plurality of slots assigned to a high-penetration reverse control channel, such that the high-penetration access request has a redundancy greater than that of an access request transmitted over the reverse control channel, and reception of the high-penetration access request at the base station.

Abstract: The invention relates to a cellular telecommunications system having n cells (1,2), each of which is assigned an antenna (4,5) via which a base station (3) can transmit and receive, all n cells being assigned only one common base station with n antennas which can be switched over, and n being ≧2.

Abstract: A determination section 301 determines whether or not a DSCH has been assigned to the communication terminal apparatus in question, and outputs a signal indicating the result of that determination to a transmission controller 102, and the transmission controller 102 changes as appropriate the degree of frequency of transmission of a signal containing shared channel information according to the result of determination by the determination section 301. That is to say, the transmission controller 102 outputs a signal containing shared channel information to a modulator 103 with a high degree of frequency when the DSCH has been assigned to that terminal, and outputs a signal containing shared channel information to the modulator 103 with a low degree of frequency when the DSCH has not been assigned to that terminal.