Channel Seizing Patents (Class 455/455)
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Patent number: 7130638Abstract: In a radio resource allocation method of the present invention, use-state information of radio resources and priority information of mobile stations using the same radio resources of both a base station of concern and neighboring base stations is detected at the base station of concern. A new radio resource is allocated to a link between the base station of concern and a requesting mobile station in a cell site of the base station of concern based on the use-state information and the priority information of both the base station and the neighboring base stations.Type: GrantFiled: December 19, 2001Date of Patent: October 31, 2006Assignee: NTT DoCoMo, Inc.Inventors: Lan Chen, Narumi Umeda, Yasushi Yamao
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Patent number: 7130388Abstract: An apparatus and method are provided for easily indicating to a user that a communication has been received for him or her. A portable message waiting indication device (MWID) includes a power source (e.g., battery), signal receiver and a visual and/or audible indicator. The indicator is activated in response to receipt of a first wireless signal at the receiver. In response to a second signal the indicator is deactivated. A MWID may also include a user-actuable switch or sensor to deactivate the indicator. In one method of using a MWID to inform a user that a communication has been received, the user registers the MWID and may identify when the MWID indicator should be activated (e.g., for certain types of messages (e.g., voice-mail, electronic mail), certain senders, a category of senders, time of day, message priority). Multiple MWIDs may be configured and employed by a user, and each may be configured similarly or differently.Type: GrantFiled: January 11, 2001Date of Patent: October 31, 2006Assignee: America Online, Inc.Inventor: Ian Andrew Bell
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Patent number: 7127262Abstract: The document specifies a method for determining field strength which can be used in mobile radio systems, such as Bluetooth. The principle proposed involves alternate transmission and reception in the mobile radio system, with each timeslot comprising at least one time interval for transmitting/receiving a data block (RX, TX). The reception field strength (RSSI) is measured directly before (A, B) or directly after (C, D) transmission or reception of the data block (RX, TX). This allows the number of locking operations required in a PLL to be reduced and still allows adaptive channel adjustment to be performed, for example in a “frequency hopping method”, by measuring all channels without reducing the net data rate.Type: GrantFiled: March 16, 2004Date of Patent: October 24, 2006Assignee: Infineon Technologies AGInventors: Markus Hammes, Britta Felbecker, Roland Hellfajer
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Patent number: 7123920Abstract: In a technique for setting up calls in IP mobile networks, when an application level in a mobile station sends a setup message to set up a multimedia call, before sending such a message over the radio interface, the mobile station performs the appropriate procedures to setup the appropriate bearers over the radio interface and in the network to satisfy the call requirements specified by the application level in the setup message. The technique applies to both mobile originated calls and mobile terminated calls, the called mobile station performing the transport level procedures after having received a setup message and before sending a confirmation/call acceptance message back to the calling party. Furthermore, the allocation of radio resources for PDP contexts that will be used to carry the media of a multimedia IP called is delayed so that no radio resources are allocated to the PDP contexts activated before the call control signaling is exchanged.Type: GrantFiled: April 9, 2001Date of Patent: October 17, 2006Assignee: Nokia CorporationInventors: Stefano Faccin, Yousuf Saifullah, Srinivas Sreemanthula, Tuija Hurtta, Nedko Ivanov, Balazs Bertenyi
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Patent number: 7120467Abstract: A base station is configured to transmit a downlink signal to a mobile station located in a sector managed by the base station. The downlink signal is spread using a scrambling code. The base station has a monitor configured to monitor a change of a reception condition of an uplink common channel of the mobile station in the sector, a DOA estimator configured to estimate a direction of arrival of an uplink signal transmitted from the mobile station, in response to the change, an area border setter configured to separate the sector into a plurality of areas, by setting an area border in the sector in accordance with the estimated direction, a scrambling code assigner configured to assign a different scrambling code to each of the separated areas and a spreader configured to spread the downlink signal using the assigned scrambling code in each of the separated areas.Type: GrantFiled: February 17, 2004Date of Patent: October 10, 2006Assignee: NTT DoCoMo, Inc.Inventors: Anil Umesh, Koichi Okawa, Shinya Tanaka, Takehiro Nakamura
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Patent number: 7120443Abstract: A method and apparatus for a communication system provide for fast link setup for a mobile station by transmitting a request message, transmitting an assignment message from the base station to the mobile station, and transmitting a notification message from the base station to a base station controller. The mobile station transmits an indication message to the base station controller indicating a successful completion of acquiring the data packet channel. The base station controller processes the indication message for message integrity and security feature. A portion of the available communication resources at the base station is allocated for an immediate response to the request message for acquiring a data packet channel.Type: GrantFiled: July 2, 2003Date of Patent: October 10, 2006Assignee: Qualcomm IncorporatedInventors: Durga Prasad Malladi, Francesco Grilli, Serge Willenegger
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Patent number: 7116979Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.Type: GrantFiled: February 18, 2004Date of Patent: October 3, 2006Assignee: Autocell Laboratories, IncInventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe
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Patent number: 7116938Abstract: Methods and apparatus are disclosed for mitigating radio frequency interference between transceiver systems within an electronic device.Type: GrantFiled: December 26, 2002Date of Patent: October 3, 2006Assignee: Intel CorporationInventors: Robert L. Monroe, Randolph L. Durrant, Krishnan Rajamani, Gordon Chinn, James P. Kardach
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Patent number: 7113792Abstract: A method for localizing a mobile station, which in one embodiment is characterized by logging one or more wireless channels which belong to one or more network providers other than the mobile station's home network provider and which substantially currently provide communication with one or more discernable base stations; and establishing a geographic position of the mobile station by use of the one or more wireless channels which belong to the one or more network providers other than the mobile station's home network provider. In one or more various embodiments, related systems include but are not limited to circuitry and/or programming for effecting the foregoing-referenced method embodiment, the circuitry and/or programming can be virtually any combination of hardware, software, and/or firmware configured to effect to foregoing-referenced method embodiment depending upon the design choices of the system designer.Type: GrantFiled: February 25, 2003Date of Patent: September 26, 2006Assignee: QUALCOMM IncorporatedInventors: Serguei Glazko, Sanjay K. Jha, Paul Jacobs
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Patent number: 7106848Abstract: The present invention is a method and system for transferring calls among communicating devices connected through a public network. The service is offered by a public network to permit a party in a ongoing conversation to transfer a call to another communicating device that may be more convenient to use, such as from a mobile telephone experiencing static to a land-based telephone, or from a home telephone to a mobile phone as a party leaves the home. In a method according to the invention, the network first establishes a connection between two communicating parties. The network then receives from one of the parties a request to transfer the call to another communications device. The network then transfers the call. The invention may be entirely network-based, in which case there may be a database of transferee devices stored on the network.Type: GrantFiled: June 7, 2002Date of Patent: September 12, 2006Assignee: AT&T Corp.Inventors: Jacqueline M Barlow, David S Barlow
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Patent number: 7096026Abstract: The need for reducing the time required for call setup in a wireless communication system (100) is addressed herein. A base station (BS 104) sends a channel assignment message to a mobile station (MS 102) and performs traffic channel initialization procedures with the MS. After completing the traffic channel initialization procedures, the BS sends a base station acknowledgment message to the MS and proceeds to transmit signaling to the MS without waiting to receive an MS acknowledgment in response to the base station acknowledgment message. Thus, the time normally taken to receive the MS acknowledgment is saved and call setup time reduced.Type: GrantFiled: July 18, 2003Date of Patent: August 22, 2006Assignee: Motorola, Inc.Inventors: Dean E. Thorson, Takeshi Morishima, Samer A. Nabulsi, Anal R. Shah
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Patent number: 7096025Abstract: A communication device (105,200) includes a cordless telephone (205) and a two way radio (210). The communication device (105,200) is adapted to place an active cordless telephone call in a low frequency mode in response to receiving an incoming two way radio communication. The communication device (105,200) is adapted to then establish communication within the two way radio communication. The communication device (105,200) periodically re-establishes the cordless telephone call to maintain communication with a cordless base station (120) until the two way radio communication is completed.Type: GrantFiled: December 11, 2003Date of Patent: August 22, 2006Assignee: Motorola, Inc.Inventors: Wayne M. Phang, Branko Avanic, Hiep T. Dang, Joseph J. Medvid, Dang N Vu, Kevin D. Walkup
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Patent number: 7092720Abstract: 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.Type: GrantFiled: March 26, 2004Date of Patent: August 15, 2006Assignee: InterDigital Technology Corp.Inventors: Janet Stern-Berkowitz, Ana Lucia Iacono, Ryan Eric Drummond
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Patent number: 7092721Abstract: A method (600) and apparatus (700) for reducing delay associated with a call set-up for a call between an originating communication unit (120) and a target communication unit (121–124) in a radio access system (RAS) (101) is described. A call is initiated with a target communication unit prior to a channel assignment. A first latency (411) between an initiation time and a time when the target is capable of receiving a notification of the call on a first channel (410) is estimated and a second latency (421) between the initiation time and a second time when the target is capable of receiving the notification on a second channel (420) is estimated. Addresses associated with the target can be sent to the radio access system on the first channel or the second channel based on the estimated first latency and the estimated second latency.Type: GrantFiled: July 20, 2004Date of Patent: August 15, 2006Assignee: Motorola, Inc.Inventors: John M. Harris, Ronald T. Crocker
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Patent number: 7089033Abstract: A transceiver capable of handling both UWB and narrowband calls includes a mechanism for detecting when a signal from one of the narrowband systems will interfere the UWB communication and switching the UWB data connection link to the alternative data path.Type: GrantFiled: May 17, 2004Date of Patent: August 8, 2006Assignee: Nokia CorporationInventors: Marko E Leinonen, Kari Moilanen, Jukka M Kansanaho
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Patent number: 7085573Abstract: A receiving device in a trunked radio communications system requests a voice channel for a communication and receives an outbound signaling message on a control channel comprising a voice channel number for the receiving device to utilize for the communication. The receiving device tunes to about a transmit frequency, wherein the transmit frequency is determined by multiplying the voice channel number by a channel spacing and adding a base frequency to yield the transmit frequency, if the voice channel number is between 0 and 119. The receiving device modulates the communication to about the transmit frequency and transmits the modulated communication with a transmit deviation that relates to a maximum of 4 kHz.Type: GrantFiled: August 30, 2005Date of Patent: August 1, 2006Assignee: Motorola, Inc.Inventors: Tanhoa Trandai, Daniel J. McDonald, Christopher H. Wilson
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Patent number: 7085543Abstract: The present invention teaches that a small standardized plate may be affixed to a cellular telephone or item of office equipment. The plate has a first fastener portion. The base unit of a wireless headset and base unit device is equipped with a second fastener portion which cooperates with the first fastener portion on the plate to secure the base unit to the plate and thus to the cellular telephone or office equipment. The plate may be permanently affixed to the surface of the telephone or other item by such means as adhesives, because when it is necessary to remove the base unit from the surface, it may be unfastened from the plate, leaving the plate in place. The fasteners used may be metal snaps, plastic snaps, hooks, clasps, clips, fabric hooks, magnets, latches and combinations thereof. In alternative embodiments, there may be extra fasteners.Type: GrantFiled: December 23, 2002Date of Patent: August 1, 2006Inventor: Shary Nassimi
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Patent number: 7076256Abstract: A cellular telephone for use with a cellular telephone network includes a GPS receiver section. Position determination related information is transmitted to and from the cellular telephone using a control channel.Type: GrantFiled: April 15, 2002Date of Patent: July 11, 2006Assignee: SiRF Technology, Inc.Inventors: Anthony J. Orler, Ashutosh Pande
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Patent number: 7076258Abstract: A system controlling the traffic balance between the paging of incoming calls and a location registration and including a plurality of base and mobile stations and a management server for location information of each mobile station. A set of cells formed by the base stations constitutes a first area group. Each mobile station shifts to a mode periodically receiving signals from the base stations if no signals are transmitted and received for a predetermine period. Each base station forms second to n-th area groups (n?2), each having an area smaller than that of the first area, to be used when the mobile stations are in idle state. Each mobile station selects the area group to register according to the period in which no packet is received and transmitted, and registers its location while specifying an area within this area group with respect to the server.Type: GrantFiled: September 9, 2002Date of Patent: July 11, 2006Assignee: NTT DoCoMo, Inc.Inventors: Masayuki Motegi, Hidetoshi Kayama, Narumi Umeda
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Patent number: 7076253Abstract: According to a disclosed embodiment, a processor is configured to detect when a wireless mobile unit is in an High Data Rate (HDR) area. The processor is further configured to determine a need for exchanging data between the wireless mobile unit and a base station. The processor invokes a data burst optimizer to exchange data between the wireless mobile unit and the base station when the wireless mobile unit is in the HDR area. The data burst optimizer is configured to exchange data between the wireless mobile unit and the base station in an HDR area. The data burst optimizer is further configured to continuously detect when the wireless mobile unit is in the HDR area. The data burst optimizer is configured to stop exchanging data between the wireless mobile unit and the base station when the wireless mobile unit is not in the HDR area.Type: GrantFiled: December 6, 2001Date of Patent: July 11, 2006Assignee: Qualcomm, Inc.Inventor: Ellis T. Fisher
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Patent number: 7072677Abstract: Disclosed is a method of operating searchers, and setting a search information list and searching channels for the same. In a communication system, a method of searching channels, comprises the steps of generating a queue of priorities for each search mode, allocating to searchers search items having higher priorities based on the queue, and searching the search items by the allocated searchers.Type: GrantFiled: December 30, 2002Date of Patent: July 4, 2006Assignee: LG Electronics Inc.Inventors: Jong Heon Kim, In Jeong Oh
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Patent number: 7072641Abstract: A method and system is disclosed for reactively managing dropped calls in a wireless communication system. A mobile station determines that it has experienced a dropped call. In response, the mobile station allows a user to continue communicating, such as by recording the user's speech, for instance. The mobile station may then play out the recorded speech to the user or to another call participant, such as upon reestablishment of the call.Type: GrantFiled: March 19, 2002Date of Patent: July 4, 2006Assignee: Sprint Spectrum L.P.Inventor: Durga Prasad Satapathy
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Patent number: 7069057Abstract: There is disclosed a cellular phone in which communication of information for a call including a voice is carried out in a communication section for the call, and communication of information which is different from the call information and which includes an image to be displayed is carried out in a communication section for information. A first display section in which the information for the call is displayed, and a second display section in which details of the information including the image to be displayed are enlarged and displayed are disposed in a cellular phone main body. An attachable/detachable operation key for inputting characters or instruction information is disposed so that the key can be attached/detached with respect to the cellular phone main body. The information is transmitted/received between the attachable/detachable operation key and the cellular phone main body by cable or by radio.Type: GrantFiled: August 13, 2003Date of Patent: June 27, 2006Assignee: Olympus Optical Co., Ltd.Inventors: Junichi Ishibashi, Yutaka Adachi, Hiroyoshi Kobayashi, Masatoshi Homan, Toshihiro Kitahara, Yoichi Iba, Hisanori Tetsuka
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Patent number: 7065059Abstract: A technique restores adjacencies between a non-stop forwarding (NSF) router and its neighboring routers during reload of routing protocol software on the NSF router within a computer network. When a new instance of the routing protocol software is re-loaded, each interface of the NSF router is placed in a special state that enables it to receive incoming Hello packets from its neighboring routers. When placed in the special state, the interface passively “listens” for incoming Hello packets from the neighbors to determine which neighbors send the packets. The router thereafter promptly creates and sends a unicast Hello packet to each neighbor from whom it has received an incoming Hello packet and creates associated neighbor data structures.Type: GrantFiled: August 9, 2001Date of Patent: June 20, 2006Assignee: Cisco Technology, Inc.Inventor: Alexey Dimitrievich Zinin
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Patent number: 7054661Abstract: The present invention provides a system and method for migrating a control of a wireless communication service provided to a mobile station (MS) in a first network depending on a first technology to a second network depending on a second technology. When receiving a request for the wireless communication service in the first network by a mobile switch center (MSC), at least one instruction is obtained to grant or deny the wireless communication service from a first control device in the second network, the first control device providing the instruction based on its communication to a management subsystem for the control of the wireless communication service. If the wireless communication service is granted, a second control device in the first network controlled by the first control device allows the MS to execute the wireless communication service with a receiver.Type: GrantFiled: August 8, 2001Date of Patent: May 30, 2006Assignee: Alcatel Wireless, Inc.Inventors: Pardeep Kohli, Seshagiri R. Madhavapeddy, Jianming Xu, Ghassan Naim
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Patent number: 7054636Abstract: Methods and systems are provided for communicating data from wireline terminals to mobile terminals in a telecommunications network, which includes a home node associated with the mobile terminal and one or more visited nodes. To establish communication with a mobile terminal, a wireline terminal sends data to a server in the telecommunications network. The server identifies a mobile identification number associated with the mobile terminal, and based on the identified mobile identification number, the server determines a route that excludes the home node when the mobile terminal is out of the geographical area served by the home node. The server then establishes via the determined route a connection to the mobile terminal and sends to the mobile terminal the data received from the wireline terminal.Type: GrantFiled: March 1, 2000Date of Patent: May 30, 2006Assignee: GTE Wireless Services CorporationInventor: Walter Wesley Howe
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Patent number: 7050819Abstract: A mesh network mobile unit includes a communications arrangement operable to provide two-way communication between the unit and a mesh network and a regeneration arrangement operable to receive and retransmit signals between other mesh network mobile units and the mesh network. The unit also includes a power receiving arrangement operable to receive power from a power source, wherein the power source is selected from either an internal power source or an external power source and a power utilization arrangement operable to alternatively enable or disable the regeneration arrangement depending upon the selected power source. Embodiments of the invention also include a positioning system that determines the physical location of the mobile unit and uses the information to route signals to the unit.Type: GrantFiled: July 16, 2002Date of Patent: May 23, 2006Assignee: Qwest Communications International Inc.Inventors: Thomas Schwengler, Patrick L. Perini, Brian Arend
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Patent number: 7047018Abstract: The invention relates to a radio telecommunication system comprising means (508) for determining a bit rate increase in a cell on the basis of capacity requests, means (508) for estimating the increase of transmission power caused by the capacity increase, means (508, 518) for determining the cell power on the basis of the current cell power and the estimated power increase, means (508, 518) for estimating the increase of the transmission power needed in the neighbouring cells caused by the capacity growth in the current cell, means (508) for limiting the resource allocation in the cell requesting capacity.Type: GrantFiled: November 5, 2003Date of Patent: May 16, 2006Assignee: Nokia CorporationInventor: Theodore Buot
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Patent number: 7047026Abstract: A controller component of one embodiment of a system assigns a first number to a mobile station that upon location of the mobile station at a first location allows connection to the mobile station of a call that employs the first number. A controller component of the system assigns a second number to the mobile station that upon location of the mobile station at a second location allows connection to the mobile station of a call that employs the second number. The second number differs from the first number. The second location differs from the first location. In another embodiment, a controller component of a system assigns to a mobile station a number that upon location of the mobile station at any one or more of a temporary user zone and a base user zone allows connection to the mobile station of a call that employs the number. A controller component of the system selects the number to comprise fewer than seven digits.Type: GrantFiled: October 13, 2000Date of Patent: May 16, 2006Assignee: Lucent Technologies Inc.Inventors: Bijan Farhang, John J. MacNamara
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Patent number: 7039417Abstract: A process, system, and apparatus are disclosed for mitigating access point data rate degradation with respect to a wireless communication between a wireless access point and a wireless client device. A channel assessment module is configured to assess the wireless communications, including interference signals, present on available wireless communications channels. The channel assessment module may establish quality parameters that at least partially describe the wireless communications quality of a given channel. A channel selection module is configured to select a best wireless communications channel based on the communications channel assessment. A channel connection module is configured to facilitate wireless communication between the wireless access point and the wireless client device on the best wireless communications channel.Type: GrantFiled: September 25, 2003Date of Patent: May 2, 2006Assignee: Lenovo Pte LtdInventors: Ruthie D. Lyle, Jamel Pleasant Lynch, Jr., Scott W. Reid, William Vigilante, Jr.
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Patent number: 7031720Abstract: In mobile communication and radio systems there is a pre-emptive bandwidth allocation by dynamic partitioning the total spectrum available to allow mobile user groups with high priority services to access greater amounts of bandwidth than mobile user groups with lower priority services when the network is overloaded.Type: GrantFiled: January 25, 2001Date of Patent: April 18, 2006Assignee: Kings College LondonInventors: Don Dilshan Weerakoon, Abdol Hamid Aghvami
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Patent number: 7013146Abstract: The present invention provides a method to enhance the RACH message transmission of a wireless communication systems. Therefore the known RACH procedure for uplink transmission is extended by additional steps in order to allow the usage of adaptive transmission parameters for uplink transmissions, preferably the usage of adaptive modulation and coding (AMC). This is advantageous because studies in high-speed downlink packet access show the possibility to increase the data rate of a downlink shared channel. The method according to the invention introduces a new RACH message preamble and enables the base station to estimate suitable adaptive transmission parameters like an AMC setting according to the current transmission conditions which are used during the RACH message transmission.Type: GrantFiled: June 27, 2001Date of Patent: March 14, 2006Assignee: Nokia CorporationInventors: Yan Wang, Suli Zhao, Hao Guan
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Patent number: 7006817Abstract: The present invention provides a method, apparatus, and computer implemented instructions for mitigating the mobile phone nuisance factor. The present invention causes a mobile phone to activate an “In-Public-Use” profile when in a public establishment, which has a policy for mobile phone usage. A transmitter in the public establishment broadcasts an external control signal that contains an encoded command. The circuitry, or processor instructions, in a mobile phone decodes the command and activates the profile with the identified settings from the command. When the profile is activated, an icon is displayed indicating that the profile is active. Additionally, the “In-Public-Use” profile is deactivated when the mobile phone leaves the range of the signal and the previous settings of the mobile phone are enabled.Type: GrantFiled: November 15, 2001Date of Patent: February 28, 2006Assignee: International Business Machines CorporationInventors: Faisal M. Awada, Joe Nathan Brown, Victor Espinoza, Jr.
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Patent number: 6999773Abstract: A communication system assigns a combination of values of multiple combinations of values to a first control channel parameter and a second control channel parameter. Based on the values assigned to the first and/or second control channel parameters, repeat periods corresponding to each of a first, second, and third control messages are determined. New combinations of values of the multiple combinations of values are then assigned to the first and second control channel parameters and new repeat periods corresponding to each of the first, second, and third control messages are determined in association with each new combination. Optimal repeat periods corresponding to each of the first, second, and third control messages are then selected from among the repeat periods determined with respect to each combination of values. Based on the selected repeat periods, an optimal combination of values is selected for each of the first and second control channel parameters.Type: GrantFiled: June 30, 2003Date of Patent: February 14, 2006Assignee: Motorola, Inc.Inventors: Trang Nguyen, Jyoti N. Black, Jeffrey C. Smolinske
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Patent number: 6990341Abstract: A method for transmitting messages on a paging channel is disclosed, in which data burst messages are efficiently transmitted through the paging channel. If the data burst messages transmitted through the paging channel are not transmitted on their slots due to overhead messages, the data burst messages are delayed by a next overhead message transmission period having no overhead message in a system which does not employ a corrected quick paging channel while the data burst messages are first transmitted within a limited range in a system which employs a corrected quick paging channel. Therefore, a receiving rate of the data burst messages can be improved.Type: GrantFiled: December 28, 2001Date of Patent: January 24, 2006Assignee: LG Electronics Inc.Inventors: Woo Seok Kang, Ji Young Hwang, Sung Hyun Nam
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Patent number: 6987974Abstract: Forward/Backward Call Indicators and the Progress Indicator (PI) of ISUP messages are used in call control signals, such as for setting up a mobile multimedia call, to indicate the involvement of a Public Switched Telephone Network (PSTN) terminal. Either terminal of an end-to-end connection can initiate the call and likewise either can respond to the call control signals initiated by the other terminal to immediately recognize the unambiguous fact that a PSTN terminal is involved in the call and to immediately respond by correctly setting up an appropriate and compatible communication format.Type: GrantFiled: November 17, 2000Date of Patent: January 17, 2006Assignee: Nokia CorporationInventors: Miraj Mostafa, Harri Honko
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Patent number: 6973325Abstract: For a push-to-talk function in a mobile communication system (30), an indication is received (35) by a user (50) that the talking floor is available. Next, an uplink temporary block flow is established (36). Prior to release of the uplink temporary block flow by the mobile communication system, a refresh message is sent (39) to hold the uplink temporary block flow. Downlink temporary block flows may also be refreshed by this method, or by the mobile communication system. Then the requesting user may enable the push-to-talk function. These techniques can improve talker arbitration and call setup delays for push-to-talk.Type: GrantFiled: September 24, 2003Date of Patent: December 6, 2005Assignee: Motorola, Inc.Inventors: Bradley R. Schaefer, John M. Harris, Mark L. Shaughnessy
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Patent number: 6968193Abstract: System for mobile telecommunication, comprising a first mobile network (KTm), connected to a first nonmobile network (KTv) having routing means (X). Terminals connected to the nonmobile network may set up a connection with mobile terminals having the first or a second mobile network as their home network. A mirror register (MLR), connected to the routing means in the nonmobile network, is used to record a copy of the user profile transferred by the HLR register of the home network of a roaming mobile terminal to the VLR register of the non-home network. The user profile stored in the mirror register in this manner is then used—together with the VLR—to directly drive the routing means X of the nonmobile network KTv, as a result of which the routing path is considerably shortened.Type: GrantFiled: November 29, 2000Date of Patent: November 22, 2005Assignee: Koninklijke Kpn N.V.Inventors: Johannes Maria Van Loon, Ivan Markoski
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Patent number: 6965588Abstract: An apparatus and method for optimizing the transition of a Mobile Station (MS) between states of operation for packet data service. An RF connection is established between the MS and Base Site Equipment (BS) for the transmission of data packets. After a period of inactivity of transmission, the RF connection is released and the BS provides the MS with the equipment identifier of the network element that will maintain the connection with a PDSN. The MS retains the identifier while in the Dormant state and a new Semi-Dormant state and sends the identifier to the BS when requesting reactivation. In the Dormant state, the network element maintaining the connection to the PDSN is the PCF. In the Semi-Dormant state, the network element maintains the connection between to the PDSN is the SDU. When the BS has data to transmit to a MS in the Semi-Dormant state, it channel assigns the MS into the Active state according to pilots reported in RF Measurement Report Messages previously received from the MS.Type: GrantFiled: November 25, 2002Date of Patent: November 15, 2005Assignee: Motorola, Inc.Inventors: Christopher R. Schmidt, John M. Harris
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Patent number: 6957068Abstract: A system for providing a dynamic multi-mode service acquisition capability to a subscriber station is provided. The subscriber station is capable of operating in two or more modes of operation. A time to scan condition is indicated while the subscriber station is operating in a current mode of operation having active and inactive states. Responsive thereto, the system stores state information for the current mode of operation, and attempts at least a partial acquisition of communications services in accordance with another mode of operation. The at least partial acquisition attempt is scheduled to be initiated while the subscriber station is operating in the inactive state in the current mode of operation, and completed before the subscriber station transitions back to the active state in the current mode of operation. If the acquisition attempt is successful, the subscriber station transitions to the new mode of operation, maintaining appropriate registration.Type: GrantFiled: September 24, 2002Date of Patent: October 18, 2005Assignee: Qualcomm, IncorporatedInventors: James A. Hutchison, IV, Rotem Cooper, Paul T. Williamson
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Patent number: 6954647Abstract: This invention proposes a mobility management method and system for wireless data networks, such as GPRS and UMTS systems. The wireless data network consists of at least one mobile device and one network apparatus. The cells in a wireless data network are partitioned into several routing areas. In the wireless data network, the mobility management activities for a mobile device are characterized by a mobility management finite state machine exercised in both the mobile device and network apparatus. There are three states in the machine: idle state, standby state and ready state. Both the mobile device and network apparatus employ a ready counter, which counts the number of cells crossed by the mobile device in the packet idle period between two packet transmissions. If the counted number reaches a threshold, the mobility management state switches from the ready state to standby state.Type: GrantFiled: December 30, 2002Date of Patent: October 11, 2005Assignee: Industrial Technology Research InstituteInventors: Yi-Bing Lin, Shun-Ren Yang, Vincent Feng
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Patent number: 6952590Abstract: 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.Type: GrantFiled: May 6, 2002Date of Patent: October 4, 2005Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: David J. Legare, F. Robert Falbo, Paul E. Sargent, Timothy A. Baker
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Patent number: 6947748Abstract: A method and apparatus for subcarrier selection for systems is described. In one embodiment, the system employs orthogonal frequency division multiple access (OFDMA). In one embodiment, a method for subcarrier selection comprises each of multiple subscribers measuring channel and interference information for subcarriers based on pilot symbols received from a base station, at least one of subscribers selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and the one subscriber receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the one subscriber.Type: GrantFiled: December 15, 2000Date of Patent: September 20, 2005Assignee: Adaptix, Inc.Inventors: Xiaodong Li, Hui Liu, Kemin Li, Wenzhong Zhang
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Patent number: 6944459Abstract: The invention relates generally to a method and an arrangement for transferring information in a packet radio service. Especially the invention applies to transferring delay sensitive data, such as speech and video data, in a mobile cellular telecommunications system. It is an object of this invention to provide a solution, in which the physical connection of a packet radio service is kept reserved also during the passive periods of a session but the same physical resource can still be shared between multiple users. In the present solution after the end of an active period of data transmission a predetermined time period is waited until the connection is released. The length of the time period is informed to the mobile station by the network on a dedicated or on a broadcast channel. The length of the time period is preferably made dependent on the required quality of service value of the connection and on the momentary communication activity in the network or cell.Type: GrantFiled: August 22, 2001Date of Patent: September 13, 2005Assignee: Nokia Mobile Phones Ltd.Inventors: Janne Parantainen, Mika Forssell
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Patent number: 6941143Abstract: Within a radio access network (111, 112) an access point (181, 182, 183 and 184) selects a channel by first randomly choosing a channel from those available for use. The Access Point then monitors the channel for a random interval to determine if the channel is presently carrying traffic. The Access Point will select the channel unless the channel is in use by another AP. If so, then the AP will select another channel and commence monitoring for a random interval in order to determine whether the channel is available. The AP will continue to choose channels until a suitable channel is found, or all available channels have been exhausted.Type: GrantFiled: August 29, 2002Date of Patent: September 6, 2005Assignee: Thomson Licensing, S.A.Inventor: Saurabh Mathur
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Patent number: 6937855Abstract: A freight tracking system having sufficient accuracy for most commercial freight hauling purposes is disclosed. The system includes a mobile telephone transmitter located in the freight or in the vehicle hauling the freight that automatically calls a telephone at the central reporting station. A caller reception unit detects the calling number and current visited base station information without answering the call and supplies it to a computer at the central reporting station which then determines the location of the shipment.Type: GrantFiled: November 9, 2001Date of Patent: August 30, 2005Inventor: Joseph S. Nadan
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Patent number: 6928290Abstract: In a mobile communications network, a delivery acknowledgement receipt can be sent to indicate a SMS message is delivered. A system can be based on currently-existing protocols, such as described in the IS-136 standard. Existing network signals that acknowledge receipt of a message can be captured and utilized to notify the originator when the SMS message is delivered. A variety of other scenarios (e.g., unsuccessful delivery) can also be supported.Type: GrantFiled: November 6, 2001Date of Patent: August 9, 2005Assignees: AT&T Wireless Services, Inc., AT&T Corp.Inventors: Simon D. Byers, Nathan Hamilton, Shanmugavelayutham Muthukrishnan, James F. Parkyn
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Patent number: 6925309Abstract: To address the need for an apparatus and method for quickly establishing a CDMA dispatch call, the present invention provides for paging mobile stations (e.g., 120-123) to inform them of the call and then starting the dispatch call without waiting for page responses from the call participants. The dispatch call is first transmitted by base sites (e.g., 110-112) of all the service coverage areas (e.g., 101-103) that may have call participants, and then discontinued at those base sites where no page responses are received within a period of time. Thus, the dispatch call is established while “call setup” effectively continues.Type: GrantFiled: December 20, 2001Date of Patent: August 2, 2005Assignee: Motorola, Inc.Inventors: Michael L. Needham, Timothy J. Wilson, Leigh M. Chinitz
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Patent number: 6907250Abstract: A mobile communication system includes a plurality of base stations and a mobile station communicating with the base station through a wireless channel. The system comprises a part which measures an amount of information transferred between the base station and the mobile station and a comparator which compares the measured amount of information with first and second threshold values corresponding to a currently used wireless channel. A wireless channel changeover part changes the current wireless channel to a wireless channel with a transmission capability higher or lower than that of the current wireless channel when the measured amount of information is above the first threshold value or below the second threshold value, respectively.Type: GrantFiled: December 18, 2001Date of Patent: June 14, 2005Assignee: NTT DoCoMo, Inc.Inventors: Yoshihiro Ishikawa, Seizo Onoe, Kazunori Obata, Takaaki Sato
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Patent number: 6907270Abstract: A method and apparatus for estimating a communication channel in a wireless communication system having multiple transmitter antennas using reduced rank estimation. The method exploits redundant and/or a priori knowledge within a system to simplify the estimation calculations. In one embodiment, a covariance matrix is calculated and analyzed to determine if the channel parameters may be reduced for channel estimation. If not, all parameters are used, otherwise a reduced rank matrix is used for the calculation.Type: GrantFiled: October 23, 2000Date of Patent: June 14, 2005Assignee: QUALCOMM Inc.Inventor: Josef J. Blanz