Abstract: Spectrum monitoring measurements are made by microcell base stations in a layered cellular network, while not serving calls or engaged in processing calls. The microcell base station transmits a first control message from to a microcell mobile station, to increase the duration for the mobile station to reside in the camping state on a control channel of the microcell base station. The microcell base station transmits a second control message from the microcell base station to the microcell mobile station, to increase the duration for the mobile station to reside in a call origination state while attempting to access a control channel of the microcell base station. Then, to perform the spectrum monitoring measurement, the base station's transmitter is turned off, the receiver is retuned to the frequency to be monitored, a signal strength measurement taken on that frequency, the receiver is retuned back to its assigned frequency, and the transmitter is turned back on, all in a short time interval.

Abstract: The coverage radii for a number of wireless transmission stations is calculated based on one or both of a link budget analysis and a propagation model. At least one coverage gap may then be identified within a given coverage area of a communications network, and locations selected for new wireless transmission stations based on a location selection criteria. The previously-identified coverage gap information is updated to take into account the wireless coverage to be provided by the new wireless transmission station, after which additional passes of the coverage area may be performed to identify locations for additional new wireless transmission station based on both the location selection criteria and on the updated coverage gap.

Abstract: In one embodiment of a system for distributing cellular radio frequency signals, a hub unit is configured to digitize first and second analog radio frequency signals in order to generate first and second digital data, respectively, indicative of the first and second analog radio frequency signals. The first and second analog radio frequency signals are broadcast from first and second base stations, respectively, associated with first and second cellular service providers, respectively, using first and second air interfaces, respectively. The first and second digital data are transported to a radio access node from the hub unit using a shared transport medium. The radio access node is configured to reconstruct versions of the first and second analog radio frequency signals from the first and second digital data, respectively, using first and second digital-to-analog converters.

Abstract: A method of partitioning resources in a CR wireless communication system and a system supporting the same are provided. A new BS receives radio resource status information from a prior BS using a particular frequency band, and requests resource partitioning to the prior BS using a new uplink subchannel defined for communications between BSs. Resource negotiation messages are exchanged over a channel defined between the two BSs so as to efficiently partition resources between the BSs.

Abstract: When a cell load becomes higher than a call setup threshold value for a first channel (CS channel), a second channel (PS channel) is changed into a channel having a low transmission rate. Consequently, the cell load is reduced and no cell loss occurs in the first channel. Therefore, the call loss rate of a first communication service is lowered. Simultaneously, a handover threshold value is higher than the call setup threshold value for the first channel so that a failure rate of handover is lowered.

Abstract: A cellular communications system comprising a space based system comprising a first set of cells, and a ground based system comprising a second set of cells. The space and ground systems can optionally function substantially autonomously, with each using spectrum from at least one predetermined frequency band.

Abstract: Techniques to enable efficient operation of co-located WLAN and Bluetooth devices are described. A station (e.g., a cellular phone or a laptop computer) determines the activity of a Bluetooth device and ascertains idle periods of the Bluetooth device. The station communicates with an access point in a WLAN during the idle periods of the Bluetooth device. The station may operate in a power save mode with the access point, send a poll frame to the access point during an idle period, and retrieve the buffered data from the access point during the idle period. The station may also operate in an unscheduled APSD mode with the access point, send a trigger frame to the access point during an idle period to start a service period, and exchange data with the access point during the service period.

Abstract: The present invention discloses a method for resolving and accessing a selected service in a Wireless Local Area Network (WLAN), wherein a service resolving unit is preconfigured for initial access, the method comprising: a WLAN user terminal sending a service establishing request to the service resolving unit; after receiving the service establishing request, the service resolving unit sending a service authentication and authorization request containing the user's subscription information to the service authentication authorization unit, which performs authentication and authorization to the requesting WLAN user terminal; then judging whether the authentication and authorization is successful, if yes, the service authentication authorization unit returning the address of the authorized destination device to the requesting WLAN user terminal so as to establish a service connection between the WLAN user terminal and the destination device; otherwise, the service authentication authorization unit returning the

Abstract: This invention relates to a method for use in a communications system comprising the steps of determining if user equipment is capable of supporting a first technology and obtaining from said user equipment information about said user equipment only if said user equipment is capable of supporting said first technology.

Abstract: Random access coverage is assured while at the same supporting high uplink data rates in a same service area served by a base station. The service area includes first and second co-sited cells. The first co-sited cell is associated with a first uplink frequency, and the second co-sited cell is associated with a second uplink frequency. The first cell allows a lower uplink load and provides a greater coverage than the second cell. The second cell allows a higher rise over thermal (RoT) value than the first cell. Random access channel requests are initially directed to the first cell using the first uplink frequency. One of the co-sited cells is selected for supporting the connection depending on one or more factors. Example factors include a priority associated with the mobile terminal, a capability associated with the mobile terminal, a load situation in the second cell, or radio channel conditions associated with the mobile radio terminal.

Abstract: This disclosure concerns systems and methods for location updating in communications networks. In one example, when a device initiates a connection to an access network, by way of which a communications network is adapted to provide core network GSM functions to devices registered therewith over a non-GSM bearer, a core network interrogates the device to obtain, if available, data indicative of the cell occupied thereby, interrogates the core network to obtain, if available, an indicator of the identity of the cell occupied by the device, obtains, if available, data indicative of the location of the access point with which the device communicates, and, in dependence on that location, selects an access controller for communicating with the access point or instructs the device to attempt to connect to the GSM radio access network.

Abstract: The present invention relates to a method for balancing the distribution of interference between radio cells in a wireless communication system comprising cells in which subcarrier blocks are used for communication. A number of adjacent cells build a cell cluster. Moreover, the present invention relates to a corresponding method adapted for use in a system in which multi beam antennas or multiple antennas are used. Furthermore, the present invention relates to base stations performing the above method as well as a communication system comprising the base stations.

Abstract: A system and method for providing information to a mobile station in a wireless network are provided. According to the method, a mobile station receives a control channel message wrapped in a unified control channel from a base station, and the mobile station determines a transmission type for incoming data, based upon the unified control channel. For a mobile station that operates with multiple transmission types, the mobile station does not have to monitor each of the control channels that the mobile station can receive, because the unified control channel tells the mobile station which transmission type to listen to. Therefore, the battery life of the mobile station can be extended, because the mobile station does not have to monitor numerous control channels.

Abstract: A wireless device capable of wireless local area network (WLAN) communications and cellular network communications stores profiles of wireless local area networks. The device identifies in which cell of a cellular network the device is currently located, and then scans more frequently for wireless local area networks matching profiles to which, previously, the device has connected while located in the cell, than for wireless local area networks matching other profiles.

Abstract: A method for selecting a subset of sites within a set of candidate sites for activating one or more radio stations of a telecommunications network includes building an initial solution of a subset of sites starting from a network configuration having the whole set of active candidate sites; and optimizing the initial solution for activating “inactive” sites and/or deactivating “active” sites, in order to minimize a predetermined cost function for the solution. The steps of building and optimizing the initial solution are adapted to define both solutions that have a geographic coverage area that is greater than a predefined minimum coverage area and to manage an amount of traffic that is greater than a predefined minimum expected traffic value. A processing system and a processing program or group of programs can be executed by the system when pre-arranged for performing the above method.

Abstract: A scheme that enables seamless roaming between the WLAN and the cellular carrier network by enabling a user that originates a call in the WLAN and happens to go outside the range of the WLAN to automatically switch over to the cellular carrier network without losing connection with the other party. This solution assumes that the mobile device has the capability to operate in at least two modes that include the WLAN mode and one of the cellular carrier modes, such as the GSM, IS-95 CDMA, IS-136 TDMA, and iDEN.

Abstract: A method of mitigating interference between a private access point and an access terminal in a radio access network, where the private access point uses a shared carrier frequency that is shared with a macro access point, and where the access terminal has an idle operational state and an active operational state, includes directing the access terminal to move to a first carrier frequency other than the shared carrier frequency if the access terminal operates on the shared carrier frequency in the active operational state. The access terminal is configured to communicate with the macro access point and the access terminal is not authorized to communicate with the private access point. N carrier frequencies are used by the macro access point, where N?2.

Abstract: In a wireless network using a carrier sense multiple access (CSMA) scheme is provided a method, system, devices and instruction sets for detecting transmission levels and adjusting the transmission levels for both a connection point and mobile stations within the network in order to reduce power consumption in network devices and minimize interference problems while keeping hidden node problems on a controlled level.

Abstract: The present invention allows multi-channel communications equipment to detect and eliminate a false interpretation of interference as a valid signal. The solution is based on the observation that the simultaneous arrival of energy on two independent channels is an impossible event. So, when such an event happens, it is a reliable signature of confusing out-of-band energy for a valid signal.

Abstract: A cellular communications system comprising a space based system comprising a first set of cells, and a ground based system comprising a second set of cells. The space and ground systems can optionally function substantially autonomously, with each using spectrum from at least one predetermined frequency band.

Abstract: A terminal device including a radio unit that adopts code division multiple access (cdma), which device omits unnecessary cell search by extending an in-zone cell monitoring cycle and a re-selection cycle in a case where under fixed conditions during cell search, when a physical layer and an RRC of the radio unit determine that a mobile phone remains still.

Abstract: A method for communication includes deploying a plurality of access points, which have respective coverage areas and are configured to operate on a common frequency channel, in a service region of a wireless local area network (WLAN), so that the coverage areas of the access points overlap. A first access point is selected to transmit downlink signals to a station in the service region of the WLAN at a certain downlink data rate. The station is instructed to transmit uplink signals at an uplink data rate that is less than the downlink data rate, so that the uplink signals can be received and decoded by both the first and second access points.

Abstract: A method for transmitting a signal by a transmitter in a frequency overlay communication system. The method includes generating y first signal groups by shuffling input information data with a length yN on an N-by-N grouping basis according to a first shuffling scheme; generating y second signal groups by performing N-point IFFT on each of the first signal groups; generating y third signal groups by multiplying each of the second signal groups by preset values; generating N fourth signal groups by de-shuffling the third signal groups on a y-by-y grouping basis according to a de-shuffling scheme; generating N fifth signal groups by performing y-point IDFT on each of the fourth signal groups; generating y sixth signal groups by shuffling the fifth signal groups according to a second shuffling scheme, and serial-converting the sixth signal groups; and performing a transmission RF process on the serial-converted signal and transmitting the RF-processed signal to a receiver.

Abstract: Methods of compensating for interference in communications in a satellite communications system are provided. At a first radioterminal, a measure of an error in communications received through a first service down-link from a satellite is generated. A communications waveform is identified which causes interference to communications through the first service down-link to the first radioterminal when it is transmitted to a second radioterminal at a frequency that is substantially the same as a frequency of the first service down-link. The measure of the error and a measure of the interfering communications waveform are processed to obtain at least one interference compensation value. The at least one interference compensation value is combined with a waveform that is to be transmitted to the first radioterminal to obtain an interference compensated waveform. The interference compensated waveform is transmitted to the first radioterminal through the first service down-link.

Abstract: A signal strength that is associated with a first wireless communications channel is detected. Electromagnetic energy is transmitted over the first wireless communications channel in response to the signal strength being sufficiently weak. A determination is made whether a handoff should be made to a second wireless communications channel having a signal that is weaker than a signal of the first wireless communications channel. Related systems and methods are described.

Abstract: With the object of efficiently transmitting a variety of different information signals by utilizing the multi-carrier characteristics of Multi-carrier/DS-CDMA, the present invention is characterized in that, when, in an uplink transmission from a plurality of mobile stations to a base station, the mobile stations transmit a preamble to the base station before transmitting an information symbol sequence, the mobile stations individually select a carrier from among a plurality of carriers, and, up until receiving a preamble receipt confirmation signal from the base station with a prescribed maximum number of preamble transmissions serving as an upper limit number; the mobile stations repeatedly transmit a preamble by means of the selected carrier and vary the transmission power used for the transmissions of each carrier.

Abstract: The use of multiple states of mobile communication device operation to allow a single base station to support a relatively large number of mobile nodes is described. The various states require different amounts of communications resources, e.g., bandwidth. Four supported states of operation are an on-state, a hold-state, a sleep-state, and an access-state. Each mobile node in the on-state is allocated communication resources to perform transmission power control signaling, transmission timing control signaling and to transmit data as part of a data uplink communications operation. Each mobile node in the hold-state is allocated communication resources to perform transmission timing control signaling and is provided a dedicated uplink for requesting a state transition and a shared resource for transmitting acknowledgements. In the sleep state a mobile node is allocated minimal resources and does not conduct power control signaling or timing control signaling. Data may be received in the on and hold states.

Abstract: A frequency reuse scheme that provides high spectral efficiency and reduced interference in areas where cell sites overlap is provided. Three frequencies are allocated per cell site, with each sector employing two frequencies, one frequency being transmitted at a higher power and the second frequency being transmitted at a lower power. The higher power frequency in one sector differs from the higher power frequency employed in the other two sectors, and the lower power frequency used in one sector differs from the lower power frequency used in the other two sectors.

Abstract: A communication device is provided having wireless capabilities configured to communicate in a first communication mode via an access point and in a second communication mode directly between other communication devices without utilizing an access point. The communication device includes a detecting unit configured to detect the existence of an available wireless network; a receiving unit configured to receive a request from another communication device for transferring communication parameters in the second communication mode; and a transmitting unit configured to transmit communication parameters relating to the available wireless network to the other communication device in response to the request.

Abstract: A hotspot access point enables a mobile wireless device to resume a service with a network server when service is interrupted by the mobile device moving out of the coverage area of the access point. A short-range communication link is established by the access point with the mobile device based on a local identification of the device. The access point requests additional information from the wireless device. The additional information relates to a wide area network identification of the device. The mobile device transmits additional information to the access point which stores the local area identification and additional identification. The access point transmits to the mobile device a coded identificator of the wireless device based upon the local area identification and a network identification of the device. The access point determines whether service with the mobile device is open and establishes a wide area connection with the mobile device.

Abstract: A wireless user device maintains wireless access via a public land mobile network and, while maintaining such wireless access, participates with one or more other devices in an instant communication session delivered via a carrier instant communications processing element of the public land mobile network. The session communications from the wireless user device are routed through a processing element of a private communication network for an assignment of a generic identifier to the session communications in place of a user identifier of the wireless user device, and then routed back to the public land mobile network to the carrier instant communications processing element for delivery to the one or more other devices in the instant communication session.

Abstract: A cellular communications system comprising a space based system comprising a first set of cells, and a ground based system comprising a second set of cells. The space and ground systems can optionally function substantially autonomously, with each using spectrum from at least one predetermined frequency band.

Abstract: When operating a mobile station in an Enhanced General Packet Radio Service (EGPRS)-compliant mode of operation, a first performance of the mobile station (110) in the EGPRS-compliant mode of operation is evaluated based upon received operating parameters. A second performance of the mobile station (110) in a General Packet Radio Service (GPRS)-compliant mode of operation is also determined based upon the received operating parameters. The EGPRS-compliant mode of the mobile station (110) is switched to the GPRS-compliant mode of operation whenever the second performance is evaluated to be preferable to the first performance.

Abstract: A method and apparatus for communication in a wireless sensor network. In one embodiment, one or more routers in a network may be available for communication with one or more star nodes at a randomized time and/or frequency. A connectivity assessment, which may be performed at several different frequencies and/or times, may be performed to evaluate the quality of communications between devices in the network. Primary and secondary communication relationships may be formed between devices to provide for system redundancy. One or more proxies may be maintained where each proxy includes a status of one or more devices in the network, e.g., one or more star nodes or routers. Proxies may be used to handle information requests and/or status change requests, e.g., a proxy may be requested to change a communication relationship between devices in the network and may generate command signals to cause the corresponding devices to make the change.

Abstract: In instant communications over a wireless network, a user from a private organization sends the request for instant communications communication through a private server controlled by the private organization. The private server sets up a private account with the wireless carrier and the user communicates via the private account.

Abstract: A printing device of the present invention has an additional function of switching over connection with two wireless networks. The printing device enters a user's wireless LAN based on first setting information, while establishing connection with a maker's wireless LAN based on second setting information to communicate with a printer, which is one of additional devices newly entering the user's wireless LAN. In response to a requirement from the printer, the printing device temporarily disconnects from the user's wireless LAN and enters the maker's wireless LAN to transmit setting information relating to the user's wireless LAN to the printer. This arrangement desirably relieves the labor of the user for settings in the additional devices to establish connection with the wireless network.

Abstract: A system and method are provided for mobile stations for enhancing the ease of use of a mobile station. Through the system and method, a user may more easily view the phone number of a caller identification card. The user may be alerted when the user tries to send messages while out of GPRS coverage, or the mobile station may recognize extension numbers in address book user interface applications to assist with a dialing operation.

Abstract: A system and method of operation for efficiently reusing and/or sharing at least a portion of the frequency spectrum between a first satellite spot beam and a second satellite spot beam, and/or an underlay terrestrial network associated with a second satellite spot beam. The spectrum is efficiently reused and/or shared between respective spot beams and/or associated underlay terrestrial systems in a manner minimizes interference between the respective satellite and terrestrial systems.

Abstract: Extending the coverage area of a licensed wireless communication system using an unlicensed communication system is described. In one embodiment, the system comprises a mobile station operable to communicate with a telecommunications network using a licensed wireless communication channel serviced by the telecommunications network in a first mode and an unlicensed wireless communication channel in a second mode, a base station communicably coupled to the mobile station via the unlicensed wireless communication channel, and a network controller communicably coupled to the base station and adapted to communicate with the telecommunications network, wherein the mobile station includes call control to control a communication session with the telecommunications network through the network controller using the unlicensed wireless communication channel by exchanging call control information with the network controller via one or more messages having the A1 protocol message format.

Abstract: An unlicensed wireless service is adapted to generate the interface protocols of a licensed wireless service to provide transparent transition of communication sessions between a licensed wireless service and an unlicensed wireless service. In one embodiment, a mobile station includes level 1, level 2, and level 3 protocols for licensed wireless service and an unlicensed wireless service. An indoor base station and indoor network controller provide protocol conversion for the unlicensed wireless service into a standard base station controller interface of the licensed wireless service.

Abstract: Described is a system and method for assigning a frequency to an access point in a wireless network comprising a plurality of access points. The system and method includes accessing a rule-base to obtain a set of rules for the wireless network, accessing a license database to obtain information about relevant wireless nodes in a region, creating a list of possible primary node frequencies from a list of frequencies associated with primary wireless nodes in the license database, creating a list of possible secondary node frequencies from a list of frequencies associated with secondary wireless nodes in the license database, identifying a list of clear frequencies from a set of unused frequencies, selecting a frequency from frequencies in the lists of possible primary node frequencies, possible secondary node frequencies, and clear frequencies and registering the frequency in the license database.

Abstract: A multi-band wireless access point includes a first antenna system including at least one antenna and having a first effective range for communicating with subscribers using a first communications protocol and a second antenna system including a plurality of antennas generally co-located with the first antenna system and having a second effective range for communicating with subscribers using a second communications protocol whereby the first and the second effective ranges are effectively coextensive. Moreover, each of the plurality of antennas in the second antenna system has a greater directivity than the at least one antenna in the first antenna system to compensate for a difference in propagation of the second communications protocol relative to the first communications protocol.

Abstract: Systems and methods for managing RF spectrum use by two or more network computing wireless communication technologies operating in the same wireless communication environment.

Abstract: Disclosed is a beacon-based traffic control system installed in a motor vehicle for receiving a wireless signal from one of a plurality of beacons that arranged in multiple geographic locations, each beacon being defined to have a respective identification code, each beacon having a short-distance wireless transmitter for transmitting a wireless signal for receiving by the beacon-based traffic control system so that when the motor vehicle is moving to a different geographic location, the beacon-based traffic control system fetches the identification code from the wireless signal of the local beacon and searches the memory thereof to find a corresponding action command and then to execute the action command, controlling the operation of the electronic component of the motor vehicle subject to the action command.

Abstract: In a mobile wireless telecommunications system, which includes base stations (30) of a first type operating over a first air interface, and base stations (32) of a second type operating over a second air interface, a method for reselection by a mobile station (40) camped on a cell associated with a first base station (30), which is of the first type, of a second base station (32), which is of the second type. The method includes receiving signals over the second air interface from the second base station (32) and evaluating a characteristic of the signals. Responsive to the characteristic, the second base station (32) is selected in place of the first base station (30), and the mobile station (40) camps on a cell associated with the second base station (32).

Abstract: A system and method of operation for efficiently reusing and/or sharing at least a portion of the frequency spectrum between a first satellite spot beam and a second satellite spot beam, and/or an underlay terrestrial network associated with a second satellite spot beam. The spectrum is efficiently reused and/or shared between respective spot beams and/or associated underlay terrestrial systems in a manner minimizes interference between the respective satellite and terrestrial systems.

Abstract: Cooperative scheduling of master and slave base station transmissions is disclosed. Silent and deaf intervals are scheduled in a frame format of a first network to allow transmissions to occur in a second network without interference.

Abstract: A method, system and mobile station for handing off communications from a cellular radio access network, such as a code division multiple access (CDMA) radio access network, to an unlicensed mobile access network (UMAN) are provided. The handoff may be effected by a signaling sequence between the mobile station, an unlicensed network controller of the UMAN, a base station controller of the cellular radio access network and the core network. In this signaling sequence, the UMAN may be identified in various manners, such as by means of an otherwise unassigned pilot PN offset or by means of a band class and an invalid frequency.

Abstract: A wireless communications system may include a terrestrial network including a plurality of base stations providing communications service for radioterminals over a terrestrial network coverage area. The plurality of base stations may include interior base stations providing communications service for radioterminals in an interior portion of the terrestrial network coverage area and peripheral base stations providing communications service for radioterminals at a peripheral portion of the terrestrial network coverage area. At least one of the peripheral base stations provides transmissions directed toward an interior portion of the terrestrial network coverage area with greater power than transmissions directed away from interior portions of the terrestrial network coverage area. Related methods are also discussed.

Abstract: Communications control apparatus CCUn involved in unitary tile carpet CPn has functions of performing communication with communications terminal TRX and wired communication with other communication control apparatus CCUn in adjoining tile carpet CPn. Each tile carpet CPn is laid out on the floor and connected to adjoining tile carpet CPn via connector CNn. Thus, a plurality of tile carpet CPn forms local area network LAN. Communication terminal TRX functions as a terminal of LAN.