Abstract: An electronic device for point-to-multipoint transmission of a digital signal over a radio communication network includes a transmitter-receiver configured to receive a radio-frequency input digital signal and generate therefrom a baseband digital signal and includes a digital signal processor. The digital signal processor includes a receiving module, an input buffer, an audio decoder module and an output buffer. The transmitter-receiver is further configured to receive the duplicated baseband output digital signal and generate therefrom a radio-frequency output digital signal. The transmitter-receiver is configured to receive the radio-frequency input digital signal on the basis of Bluetooth® specifications and transmit the radio-frequency output digital signal on the basis of Bluetooth® specifications, and the microcontroller is configured to realize a unidirectional asynchronous packet data link.

Abstract: A method that incorporates the subject disclosure may include, for example, identifying, by a network device comprising a processor, a bearer path through a communication network for carrying internet protocol packets associated with a calling session between a first mobile device and a second mobile device and activating, by the network device, a bridging bearer path at a nearest network element to generate a direct tunnel for carrying the internet protocol packets associated with the calling session and to modify the bearer path to a shortest bearer path, where the nearest network element comprises a network element that is communicatively coupled to both the first mobile device and the second mobile device and that is closest to the first mobile device and the second mobile device. Other embodiments are disclosed.

Abstract: A method for organizing random access (RA) resources, comprising: forming a device group including a plurality of group members and at least one group representative; providing the at least one group representative with priority access to RA resources; sending, by the at least one group representative, a primary event message to a central unit in said RA resources; and sending, by the central unit, a response message, responsive to the primary event message, to the group members for managing access of the group members to the RA resources.

Abstract: There is provided a communication device including: a communication unit that receives a beacon for a second communication service making secondary usage of a spectrum assigned to a first communication service; and a control unit that controls a transmission power to be used for transmission of a radio signal of the second communication service from the communication unit based on location data included in the beacon and indicating a location of a transmission source node of the beacon and a location of an interfered node interfered by the second communication service.

Abstract: The present invention is applicable to the field of communications technologies, and provides a repeating method of a wireless repeating device and a wireless repeating device. The method includes the following steps: synchronizing network connection information of an upstream AP to a downstream WLAN AP interface of the wireless repeating device; obtaining, according to the downstream WLAN AP interface corresponding to the synchronized upstream AP, downstream wireless STA MAC address information, and establishing an upstream WLAN Client interface which is in a mapping relationship with an STA MAC address; and performing, according to the mapping relationship between the STA MAC address and the established upstream WLAN Client interface, management on data forwarded between the upstream AP and a downstream wireless STA.

Abstract: The embodiments of the present invention provide a method and an apparatus for transmitting a data frame. The method comprises: acquiring at least one address of a destination address (DA) and a source address (SA), that are corresponding to data transmission direction information; determining, according to the data transmission direction information, an address field for carrying at least one address of the DA and the SA; and sending the data frame comprising the address field to a receiver. The method and apparatus for transmitting a data frame disclosed by the present invention can reduce overhead of an MAC frame header, improve transmission efficiency, and enable a station to acquire DA and/or SA of a data frame.

Abstract: A method, Group Application Server, and mobile device are provided that coordinate an operation of multiple mobile devices of a same user in a group call. When the multiple mobile devices join the group call, a first mobile device of the multiple mobile devices determines that it is an active device and provides an indication of such to the Group Application Server. In response to receiving the indication, the Group Application Server identifies a second mobile device, of the multiple mobile devices, that is a non-active device and one or more of modifies subsequent communications with the second mobile device or conveys a behavior modification message to the second mobile device. In another embodiment of the present invention, the first mobile device may indicate that it is the active device directly to the second mobile device and the second mobile device modify its behavior accordingly.

Abstract: A method for transferring messages to wireless communication device, the method may include receiving, by an intermediate device, from a upstream device, a certain message awaiting indication that is indicative that a certain message is waiting to be sent to a certain wireless communication device; detecting, by the intermediate device, that the certain wireless communication device is in a wireless communication facilitating mode; requesting the certain wireless communication device, to re-enter the wireless communication facilitating mode at a certain time frame; retrieving the certain message from the upstream device; detecting, by the intermediate device, that the certain wireless communication device re-entered the wireless communication facilitating mode at the certain time frame; and wirelessly transmitting the certain message to the certain wireless communication device.

Abstract: Certain features relate to a remote antenna unit having a multi-stage isolation sub-system for isolating uplink and downlink signal paths. A multi-stage isolation sub-system in the remote antenna unit can include a first stage device that is configured to generate a cancellation signal for canceling unwanted downlink signals received at the uplink antenna. The isolation sub-system can also include a second stage device configured to generate a cancellation signal that attenuates residual noise and intermodulation products generated in the downlink path and received in the uplink path. The multi-stage isolation sub-system can combine the cancellation signals with signals received on the uplink path in order to cancel or attenuate downlink leakage signals and residual noise present on the uplink path.

Abstract: A first base station for handling cell release for dual connectivity in a communication system comprising a user equipment (UE) connecting to the first base station and a second base station, the first base station comprises a processing means configured to execute the instructions of determining to release a cell of the second base station which communicates with the UE; transmitting a cell release request message to the second base station, for initiating a release of the cell of the second base station from the UE; receiving a cell release response message transmitted by the second base station in response to the cell release request message; transmitting a RRC message to the UE, to indicate the UE to release the cell of the second base station, after receiving the cell release response message; and receiving a RRC response message transmitted by the UE in response to the RRC message.

Abstract: A system is disclosed in which a base station initiates a handover of a mobile relay node associated with the base station. The base station obtains information that identifies at least one further base station, and that indicates that the at least one further base station is capable of providing donor services to the mobile relay node. When the base station determines that the mobile relay node requires handover, it selects, from at least one cell of the at least one further base station identified by the obtained information, a target cell for handover of the mobile relay node, and performs handover of the mobile relay node to the selected target cell.

Abstract: A method performed by a communication network node is provided for scheduling of a User Equipment, UE, in a communication network which comprises the UE and the communication network node. The UE is arranged to communicate data on a plurality of bearers with the communication network node. In the method, one or more active bearers among the plurality of bearers are determined, the highest priority of the active bearers are determined, and a data transmission in uplink is scheduled for the UE based on the highest priority. By only taking active bearers in account when scheduling, UEs with non-active high priority bearer are prevented from performing free-riding traffic on lower prioritized bearers.

Abstract: The invention is directed to systems, methods and computer program products for executing a handover operation associated with relay termination. Specifically, the handover operation entails directly connecting a mobile terminal to a base station, which is currently connected to the base station via a relay terminal, and, subsequent to establishing the direct connection, terminating the connection between the mobile terminal and the relay terminal.

Abstract: The present invention relates to a method for transmitting and receiving a signal, using a macro base station, through a relay node in a wireless communication system in which a carrier aggregation method is applied. Specifically, the method comprises the steps of: receiving a downlink control channel in a first subframe of a main component carrier; and receiving a data channel on the first subframe and a second subframe after the first subframe, based on control information included in the downlink control channel, wherein the data channel is received through only one or through a plurality of sub-component carriers in the second subframe, and the control information includes a carrier identifier for identifying component carriers and/or a subframe identifier for identifying subframes.

Abstract: A method and an apparatus for obtaining information from a target base station are disclosed. The method includes: when a source base station needs to obtain information from a target base station, receiving, through an air interface, a system message in a certain format broadcast by the target base station; and parsing the system message, and obtaining required information. Through the present invention, an LTE base station can communicate with another LTE base station or with a heterogeneous base station directly through an air interface, thereby increasing the efficiency of communication between base stations.

Abstract: The present disclosure relates to a wireless communication system and, more particularly, to a method and apparatus for multicasting/broadcasting in a relay network of a wireless LAN system. A method by which a relay entity delivers a multicast/broadcast frame in a wireless LAN system, according to one embodiment of the present disclosure, includes the steps of: receiving a multicast/broadcast frame from an STA; and delivering the multicast/broadcast frame to a root access point (AP). The multicast/broadcast frame may be transmitted by the root AP in a broadcast scheme within a basic service set (BSS). In the multicast/broadcast frame transmitted in the broadcast scheme by the root AP, an address 1 (A1) field may be set to a multicast/broadcast address, an Address 2 (A2) field may be set to a medium access control (MAC) address of the root AP, and an Address 3 (A3) field may be set as a MAC address of the STA, which is a source address of the multicast/broadcast frame.

Abstract: A method for wireless communications testing using downlink (DL) signal transmissions from an access point to a mobile terminal and uplink (UL) signal transmissions from said mobile terminal to said access point. Accurate block error rate (BLER) testing of LTE mobile devices in a wireless signal environment is enabled by preventing repeated transmissions of the same downlink (DL) data block that would normally follow reception of uplink (UL) transmissions of negative UL acknowledgments (NACKs) caused by failures to decode prior DL data transmissions, thereby producing cumulative NACK counts accurately reflecting data reception errors.

Abstract: A method, network communication device, and computer program product are disclosed to perform simultaneous operation of at least a first and second communications protocol. The method includes determining a first frame period for communicating with a first processing device using the first communications protocol, selecting, based on the first frame period, a second frame period for communicating with a second processing device using the second communications protocol, and allocating a portion of the second frame period for communicating with the first processing device using the first communications protocol.

Abstract: A communication method comprises: broadcasting, from a communication apparatus to a user terminal, system information for Device to Device (D2D) proximity service, by use of a frequency of a serving cell of the user terminal, the communication apparatus managing the serving cell. The system information includes first information and second information. The first information indicates an available frequency for a discovery procedure in which the user terminal discovers another user terminal. The second information indicates at least one parameter for calculating transmission power for the discovery procedure. The available frequency for the discovery procedure is a frequency different from the frequency of the serving cell. The first information is related to a center frequency of a frequency band of the available frequency for the discovery procedure.

Abstract: The present invention discloses a network service extension method and device capable of extending the range of a network service. An embodiment of said method comprises the following steps: establishing a link between a substantial network unit of a wireless network relay device and a wireless network serving device; configuring a virtual wireless network serving unit according to the link setting of the wireless network serving device, so as to make the link settings of the virtual wireless network serving unit and the wireless network serving device the same; establishing a link between the virtual wireless network serving unit and a wireless network demand device; and establishing the connection between the wireless network serving device and the wireless network demand device via the virtual wireless network serving unit and the substantial network unit.

Abstract: The present invention relates to a relay node device for receiving control information from a base station and a method therefor. The relay node device according to the present invention comprises: a receiver, which receives information about an area where a relay-physical downlink control channel (R-PDCCH), the channel for transmitting control information for the relay node from a base station, is allocated; a processor, which searches for at least one R-PDCCH for the relay node based on the R-PDCCH allocation information received; and an R-PDCCH receiver, which receives the at least one R-PDCCH from the fourth symbol of the first slot in a downlink backhaul subframe of the area where the at least one R-PDCCH searched for by the processor has been allocated.

Abstract: A network including an access point, a client station, and a proxy station. The proxy station is configured to communicate with the access point during a first period. During the first period the proxy station is configured to receive, from the access point, downlink data intended for the client station, and transmit, to the access point, uplink data received from the client station and intended for the access point. The proxy station is further configured to communicate with the client station during a second period. During the second period the proxy station is configured to receive, from the client station, the uplink data intended for the access point, and transmit, to the client station, the downlink data intended for the client station.

Abstract: A method for setting up a relay link to transfer a data frame using a relay in a wireless communication system. The relay link setup method of a source in the system may include receiving capability information of at least one relay supporting station included in the system from an access point or a personal basic service set central point, selecting one of the at least one relay supporting station as a relay station, using beam forming information among the source station, a destination station, and the at least one relay supporting station and the capability information, transferring a relay link setup request frame to the destination station, and receiving a relay link setup response frame that includes information on a relay link setup result from the destination station. The relay link setup request frame and the relay link setup response frame may pass through the relay station.

Abstract: According to an embodiment of the present invention, a method for transmitting a discovery signal related to device to device (D2D) communication by a first UE in a wireless communication system comprises: mapping a codeword related to a discovery signal to two or more pairs of physical resource blocks (PRBs) on a time axis; and transmitting the mapped codeword, wherein a first pair of PRBs of the two or more pairs of PRBs includes a resource area for a first signal and whether an n-th (n>=2) pair of PRBs of the two or more pairs of PRBs includes the resource area for the first signal is determined according to whether a next subframe of a subframe including an (n?1)-th pair of PRBs is for an uplink transmission.

Abstract: A user terminal according to one aspect executes a first and second DRX operations. The first DRX operation is an operation of discontinuously monitoring first control information, which is transmitted from the base station via PDCCH, using a C-RNTI that uniquely identifies the user terminal in a cell of the base station. The second DRX operation is an operation of discontinuously monitoring second control information, which is transmitted from the base station via the PDCCH, using a group RNTI assigned to a terminal group including the user terminal. The user terminal monitors the first control information in a first ON duration for the first DRX operation, and monitors the second control information in a second ON duration for the second DRX operation, the second ON duration being independent of the first ON duration.

Abstract: The capacity of a cellular wireless system is increased by operation of base stations or base station sectors arranged to re-use radio resource elements that are used by neighboring base stations or base station sectors, in conjunction with operation of relay stations, which are similarly arranged to re-use radio resource elements used by neighboring relay stations, and where the radio resource elements re-used by the relay stations are different to those used by the base stations. The relay stations provide coverage, particularly in the areas at the boundaries between the areas of coverage of base stations that suffer from interference between signals transmitted from the respective base stations. In addition, the relay stations generally increase the average available carrier to interference ratio compared with a system in which base stations alone are deployed.

Abstract: In some implementations, a method in a user equipment (UE) for supporting time division duplex (TDD) and frequency division duplex (FDD) joint carrier aggregation (CA) includes receiving a Physical Uplink Control Channel (PUCCH) resource allocation from an evolved NodeB (eNB). The PUCCH resource allocation includes a first PUCCH configuration for a first subframe and a second PUCCH configuration for a second subframe, and the second PUCCH configuration is different than the first PUCCH configuration. The UE transmits a first group of Hybrid Automatic Repeat reQuest (HARQ) bits based on the first PUCCH configuration in the first subframe. The UE transmits a second group of HARQ bits based on the second PUCCH configuration in the second subframe.

Abstract: An information processing device may perform enabling a communication between a first network and the information processing device in a case that a setting to enable the communication between the first network and the information processing device is not being made. The information processing device may perform receiving, from the communication device, communication device information. The information processing device may perform receiving an acquisition order to acquire external device information stored in an external device. The information processing device may perform enabling a communication between a second network and the information processing device when the acquisition order is received. The information processing device may perform receiving, from the external device, external device information. The information processing device may perform acquiring usage data to be used in the communication device by using the communication device information and the external device information.

Abstract: A method for communication in a wireless network is provided. The method includes a relay node receiving a data packet and determining whether to transmit the packet without performing error checking.

Abstract: The present invention relates to a wireless communication system. A method for user equipment transmitting channel state information (CSI) in the wireless communication system, according to the present invention, comprises the steps of: receiving information on an N number of CSI configurations for reporting the CSI; receiving information for selecting an M (2?M?N) number of the CSI configurations for joint CSI from the N number of the CSI configurations; calculating the M number of rank indexes (RI) based on each channel corresponding to the M number of CSI configurations; calculating a joint RI based on a synthetic channel generated by synthesizing the channels corresponding to the M number of the CSI configurations; and transmitting information on whether to report the joint CSI based on a result from comparing the M number of the RIs and the joint RI.

Abstract: A method for cancelling inter-node interference at a victim node is disclosed, which method may be executed as instructions on a machine, where the instructions are included on at least one computer readable medium. The method can include the victim node receiving downlink signal information from an aggressor node. The victim node can estimate a channel impulse response for a channel between the aggressor node and the victim node using the downlink signal information. The victim node can estimate an inter-node interference signal for the channel using the downlink signal information and the channel impulse response. The victim node can receive an uplink signal from a wireless device, wherein the downlink signal information is received prior to the reception of the uplink signal.

Abstract: A first base station provides overlapping coverage area with each of a plurality of second base stations. Each of the plurality of second base stations transmits a message comprising a subframe allocation bitmap indicating a plurality of subframes. The plurality of subframes comprises a plurality of almost blank subframes. Base stations in the plurality of second base stations configure the same set of subframes as the plurality of almost blank subframes.

Abstract: A method and apparatus are provided for signal transmission and reception in a Time Division Duplex (TDD) system. The method includes receiving, from a base station, first configuration information including an uplink reference Uplink-Downlink (UL-DL) configuration; receiving, from the base station, second configuration information including a downlink reference UL-DL configuration; receiving, from the base station, third configuration information including an equivalent UL-DL configuration based on the first configuration information and the second configuration information; and communicating signals with the base station based on the third configuration information.

Abstract: A method and apparatus to control interference in a relay node are provided and include simultaneously receiving a symbol from source nodes, adjusting channel coefficients; and relaying the symbol to destination nodes with adjusted channel coefficients. The simultaneously receiving and the relaying are performed during a symbol transmission process between the source and destination nodes.

Abstract: One embodiment of the present invention relates to a method for transmitting signals over an unlicensed band phase of a base station in a wireless communication system, which comprises the steps of: transmitting a physical down-link control channel (PDCCH) from a licensed band; and transmitting a physical down-link shared channel (PDSCH) over a time interval of the unlicensed band corresponding to the sub-frame transmitted by the PDCCH, wherein a reservation signal can be transmitted to a pre-set point from the point the unlicensed band is available to the base station, if the base station performs wave transmission sensing for the unlicensed band for transmission of the PDSCH, and the pre-set point is earlier than the point at which the unlicensed becomes available from the transmission sensing results.

Abstract: Systems and methods for optimizing data communication in a network of moving things. As non-limiting examples, various aspects of this disclosure provide systems and methods for communicating delay tolerant information in a network of moving things, for example comprising any of a variety of types of vehicles (e.g., autonomous vehicles, vehicles controlled by local operators, vehicles controlled by remote operators, etc.).

Abstract: A system and method for two-way relaying with beamforming are provided. A method for relay operations includes estimating communications channels between a relay and communications devices coupled to the relay, storing data contained in the transmissions, storing data contained in the transmissions, precoding a transmission including a subset of the stored data with a precoding matrix, and transmitting the precoded transmission. The estimating is based on transmissions made by the communications devices in the subset of communications devices, and the precoding matrix is based on estimates of the communications channels.

Abstract: Disclosed are a method and a device for allocating a search space of a control channel in a subframe. A method for monitoring downlink control information comprises the steps of: acquiring first control information on a first enhanced-physical downlink control channel (e-PDCCH) by monitoring a common search space in a first slot of a subframe; and acquiring second control information on a second e-PDCCH by monitoring a user equipment (UE)-specific search space in a second slot of the subframe. Thus, a terminal can obtain cell-specific information through an e-PDCCH even without a legacy physical downlink control channel (PDCCH).

Abstract: A method and system for transferring buffered downlink data for a wireless communication device (WCD) from a source base station to a target base station as part of a handover of the WCD from the source to the target base station. The source base station may have downlink data for transmission to the WCD buffered during the handover. A determination may be made as to whether or not the target base station is a relay base station with a wireless backhaul. If the target base station is determined to be a relay base station with a wireless backhaul, then the source base station may refrain from transmitting at least one portion of the buffered data to the target base station.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of Time-Division Duplexing (TDD) Uplink-Downlink (UL-DL) configuration management. For example, a node may communicate a message including a cell identifier identifying a first cell controlled by the node, and a TDD configuration update to update at least one other node, which controls at least one second cell, with a TDD UL-DL configuration allocated by the node for communication within the first cell.

Abstract: Methods, systems, and devices are described for coverage enhancement in a wireless communication system. A base station may select different coverage enhancement techniques for different channels, and transmit the channels using the selected coverage enhancement techniques. Examples of coverage enhancement techniques that may be selected include repetition within subframes, repetition across different subframes, power boosting, and spatial multiplexing. These and other techniques may be used alone or in combination. In some examples, a user equipment (UE) may determine a coverage enhancement need and may monitor a control channel accordingly.

Abstract: A wireless mobile router (140) includes wireless network interfaces (202) and (218) attached to a network controller (142). The wireless network interface (202) communicates with a cellular network (110) to access cellular network services. The wireless network interface (218) and the network controller (142) comprise a WLAN (170) or PAN (180) and a network router hosting a plurality of client devices. Each client device may access a wide area network, WAN over the cellular network. The wireless mobile router (140) is configured to exchange various cellular network signals with various WLAN and PAN networks. The wireless mobile router (140) is particularly suitable for use in a vehicle or at locations where WAN access is not readily available.

Abstract: Virtualized group-wise communications between a wireless network and a plurality of user equipments (UEs) are supported using UE cooperation. UE cooperation includes receiving, at a cooperating UE (CUE), downlink information from the wireless network destined for a target UE (TUE) and associated with a group identifier (ID). The group ID indicates a virtual multi-point (ViMP) node that includes the TUE and the CUE. The UE cooperation also includes sending the downlink information to the TUE. The UE or UE component can have a processor configured to forward between the wireless network and a TUE at least some information that is associated with a group ID indicating a ViMP node that groups the TUE and the UE.

Abstract: The embodiments of this application relate to the field of wireless communications. Disclosed are an auxiliary information reporting and information sending method and device, so that a target base station can acquire the latest auxiliary information of a user equipment (UE) and then can provide the most reasonable configuration for the UE. In this application, the UE reports the auxiliary information to a source base station, and determines whether it is required to re-report the auxiliary information in a target cell; if determining that it is required to re-report the auxiliary information in the target cell, the user equipment reports the auxiliary information to the target base station after being switched to the target cell. It can be seen that, in this solution, the target base station can acquire the latest auxiliary information of the UE, so as to provide the most reasonable configuration for the UE.

Abstract: In accordance with one embodiment of the present disclosure, a method of operating a relay node includes receiving information, at the relay node, information identifying a plurality of subframes. The subframes represent time periods during which a base station may grant the relay node permission to transmit to the base station on a first frequency. The method also involves selecting one of the identified subframes to be used for a transmission between the relay node and a wireless terminal on the first frequency and transmits to the wireless terminal a scheduling grant granting the wireless terminal permission to transmit information on the first frequency during the selected subframe.

Abstract: The invention proposes a method for the transmission of data in a cooperative network comprising a source terminal (S), a destination terminal (D) and a relay terminal (R), comprising: in a first transmission (T1), the transmission of the data of a packet by the source terminal (S) to both the relay terminal (R) and the destination terminal (D); in the event of failure (N1) of the destination terminal (D) to successfully decode the data in the packet of the first transmission, and in the case of the data of the first transmission being successfully (O2) decoded by the relay terminal (R), the relay terminal transmits the data of the packet to the destination terminal in a second transmission (T2); in the event of failure (N3) of the destination terminal to successfully decode the data in the packet of the second transmission (T2), selection of the source terminal and/or relay terminal to retransmit the data of the packet to the destination terminal in a third transmission (T3), where the selection may be ba

Abstract: Embodiments of the present invention disclose a packet processing method and system. In the method in the embodiment of the present invention, because a root node configures different control VLANs for any two rings that have an adjacent edge in an area, different control VLANs are used to transmit a protocol packet in a ring that has its own control VLAN configured. The method and system may be applied to a ring network of a metro Ethernet to provide multi-path protection and implement rapid convergence of service switchover. In addition, a network topology structure is not limited to a network topology with a single ring or only two intersecting points, and may be applied to all network topology situations.

Abstract: Embodiments of the present invention disclose a method for multiple users cooperative communication. The method provided in the embodiments of the present invention includes: acquiring, by a core network node, information about MUCC capability identifiers of at least two UEs, where the MUCC capability identifiers are used to identify MUCC capabilities of the UEs; and sending, by the core network node, the information about the MUCC capability identifier of the at least two UEs to a radio access network node, to enable the radio access network node to select, according to the capability identifiers of the UEs, a UE having a supporting capability of the MUCC capability and a UE having a benefited capability of the MUCC capability, so that the UE having a supporting capability supports, in MUCC communication, a bearer of the UE having a benefited capability.

Abstract: Disclosed is a method for transmitting channel status information at a user equipment in a wireless communication system, which more particularly comprises the following steps: receiving a reference signal from a base station; generating at least one channel status information based on the reference signal; mapping the at least one channel status information to available subframes, based on a priority of the at least one channel status information; and transmitting the at least one channel status information to the base station using the available subframes, wherein, if an uplink transmission using a first available subframe of the available subframes is blocked and a first channel status information that is mapped to the first available subframe has priority over a second channel status information that is mapped to a second available subframe, which is a next available subframe of the first available subframe, the first channel status information is shifted to be mapped to the second available subframe.

Abstract: A Frequency Division Duplex (FDD) wireless communication apparatus is provided. The FDD wireless communication apparatus includes a first antenna configured to one of transmit and receive, a second antenna configured to receive, and a switch configured to selectively connect one of the first antenna and the second antenna to a receiver.