Co-located Systems Patents (Class 455/448)
-
Patent number: 8160570Abstract: 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 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 and is also configured to generate first data packets from a first data radio frequency signal. The first data packets are communicated to the hub unit using the shared transport medium.Type: GrantFiled: February 23, 2011Date of Patent: April 17, 2012Assignee: LGC Wireless, LLCInventors: John Sabat, Jr., Peter Yelle
-
Patent number: 8160048Abstract: A method for accessing a hybrid network including a wide area network and a distributed network, a gateway apparatus, a wireless terminal and a gateway communication system are disclosed for reducing the power consumption of the wireless terminal which is an access gateway. The method comprises: sensing by a gateway apparatus a relay request slot on a downlink common control channel of the wide area network; transmitting by a wireless terminal a relay request signal requesting to relay a data packet to be transmitted, in the relay request slot on the downlink common control channel; and if the relay request signal from the wireless terminal is sensed in the relay request slot, establishing by the gateway apparatus a connection with the wireless terminal in a distributed network environment.Type: GrantFiled: October 18, 2006Date of Patent: April 17, 2012Assignee: NTT DoCoMo, Inc.Inventors: Lei Du, Yong Bai, Lan Chen, Hidetoshi Kayama
-
Patent number: 8155025Abstract: 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.Type: GrantFiled: April 11, 2011Date of Patent: April 10, 2012Assignee: AT&T Intellectual Property II, L.P.Inventors: Mathilde Benveniste, Sushil Kumar Prabhu
-
Patent number: 8145224Abstract: Disclosed is a method of transmitting common control information by a base station in a communication system including a first communication system and a second communication system different from each other. In the communication system, a frame for carrying the common control information includes an uplink sub-frame and a downlink sub-frame, each of which includes a resource allocation area for the first communication system and a resource allocation area for the second communication system. The method includes: configuring the common control information to be received by a mobile station belonging to the second communication system; and transmitting the common control information through the resource allocation area for the second communication system included in one of the uplink sub-frame and the downlink sub-frame.Type: GrantFiled: March 10, 2008Date of Patent: March 27, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Ki-Chun Cho, Mi-Hyun Lee, Jae-Weon Cho, Ho-Kyu Choi, Hyun-Kyu Yu, Chi-Woo Lim, Song-Nam Hong
-
Patent number: 8144678Abstract: A method, system, and computer-readable media are provided for allowing a mobile device to maintain communication connectivity during a handoff between wireless access points. In one aspect, the method may include negotiating security association information and establishing a first communication tunnel by tunneling an inner IP address within a first outer IP address. The method may further include authenticating a request for establishing a second communication tunnel by identifying the negotiated security association information within the request. Additionally, the method may include establishing the second communication tunnel by tunneling the inner IP address within a second outer IP address. Moreover, the method may include pushing data associated with the communication session through the second communication tunnel.Type: GrantFiled: May 17, 2011Date of Patent: March 27, 2012Assignee: Sprint Communications Company L.P.Inventors: Jeremy R. Breau, Sohel Khan
-
Patent number: 8145186Abstract: The present invention provides a method, system, and software product for assessing the performance of at least one telecommunications service area wherein the method comprises providing for the telecommunications service area performance information comprising service area rate of blocked calls, service area rate of dropped calls, and service area number of attempted calls. Additionally, the performance information for the service area to generate a Performance Value therefore. The present invention further comprises comparing the Performance Values of at least first and second service areas to provide a basis for making decisions regarding maintenance, repair, or replacement activities of hardware and software relating to a service area.Type: GrantFiled: March 31, 2008Date of Patent: March 27, 2012Assignee: Sprint Communications Company L.P.Inventor: Gary Francis Vaughan
-
Patent number: 8145214Abstract: The present invention discloses a solution for improving scan time in a co-banded mobile communication device. The solution can maintain a set of records within a data store of a co-banded mobile communication device. The set of records can include two or more communication rasters that represent an overlap between frequency bands used by different access technologies supported by the mobile communication device. A frequency band for a first access technology can be scanned for communication rasters allocated for that access technology. For each occupied communication raster, a related record of the set of maintained records can be updated to indicate that the communication raster is occupied. A frequency band for a second access technology can then be scanned within a previously determined time threshold of the first scan. The second scanning attempt can skip those communication rasters indicated as occupied by the set of records.Type: GrantFiled: August 9, 2007Date of Patent: March 27, 2012Assignee: Motorola Mobility, Inc.Inventor: Steven R. Brandt
-
Patent number: 8144591Abstract: Systems and methods for reducing latency in call setup and teardown are provided. A network device with integrated functionalities and a cache is provided that stores policy information to reduce the amount of signaling that is necessary to setup and teardown sessions. By handling various aspects of the setup and teardown within a network device, latency is reduced and the amount of bandwidth needed for setup signaling is also reduced.Type: GrantFiled: July 7, 2008Date of Patent: March 27, 2012Assignee: Cisco Technology, Inc.Inventors: Rajat Ghai, Jim Towey
-
Patent number: 8135379Abstract: A portable telecommunications system (PTS) allows mobility and rapid deployment with minimal on-site configuration. PTS systems exchange multicast packets including location and identification information. A protocol manager sets up these communications channels, manages exchanges between PTS systems, and passes the data to or from internal system nodes. The PTS system detects when another PTS system is operating in close physical proximity and automatically perform actions, such as adjustment of transmission power level, to maintain service to the user base.Type: GrantFiled: April 18, 2008Date of Patent: March 13, 2012Assignee: Telefoanktiebolaget L M Ericsson (Publ)Inventors: Sethuraman Ramachandran, Amy Derbyshire, Janardan Sethi, Douglas A. Sharp, Joseph Meagher, Mark Bailey, Mark Leifer, Mark Gibbard, Ramesh Ramiah, Raghavan Srinivasan, Mitch Cooper
-
Patent number: 8126468Abstract: In response to detecting a call attempt for a priority call on the originating wireless network by an initiating access terminal, at least one active call having a priority level less than the priority call is transferred to an alternate technology wireless network. If a call attempt is placed when a transfer threshold has been exceeded, candidate transferring terminals are identified based on multi-mode capabilities and network conditions. One or more of the candidate transferring terminals engaged in calls that have a priority level less than the priority call are transferred from the originating wireless network to the alternate technology wireless network when the transfer threshold is exceeded.Type: GrantFiled: March 24, 2006Date of Patent: February 28, 2012Assignee: Kyocera CorporationInventors: Henry Chang, Doug Dunn, Amit Kalhan
-
Patent number: 8121605Abstract: There is provided a method for improving an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band. The method includes determining a demand (DS) for a resource by users of a satellite system, determining a demand (DT) for the resource by users of a terrestrial system, and allocating the resource between the satellite system and the terrestrial system based on a ratio of DS to DT.Type: GrantFiled: June 18, 2003Date of Patent: February 21, 2012Assignee: Globalstar, Inc.Inventors: Paul A. Monte, Bradford W. Arnold
-
Patent number: 8121602Abstract: A cell reselection method in a wireless communication system is described. A method of performing cell reselection based on priorities by a user equipment (UE) in a wireless communication system includes selecting one or more candidate cells satisfying a first criterion associated with priorities among a serving cell and neighbor cells, and camping on a cell satisfying a second criterion for cell reselection among the one or more candidate cells.Type: GrantFiled: October 30, 2008Date of Patent: February 21, 2012Assignee: LG Electronics Inc.Inventors: Seung June Yi, Young Dae Lee, Sung Duck Chun, Sung Jun Park, Seon Don Lee
-
Patent number: 8116792Abstract: Methods, systems, and computer-readable media for mitigating a temporary interference condition are provided. The temporary interference condition is predicted between a first cellular device and a second cellular device prior to an occurrence of the temporary interference condition. A mitigation action for mitigating the temporary interference condition is identified. A schedule and a scale or scaling for the mitigation action are determined. The mitigation action is implemented in accordance with the schedule and the scale or scaling to mitigate the temporary interference condition during the occurrence of the temporary interference condition.Type: GrantFiled: November 20, 2007Date of Patent: February 14, 2012Assignee: AT&T Intellectual Property I, LPInventor: Jeffrey A. Aaron
-
Patent number: 8107414Abstract: An apparatus and method (200) are disclosed for expanded coverage in a mesh network (100). A communication device (140) incorporating teachings of the present disclosure may include, for example, a controller (302) managing operation of a transceiver (320) in communication with the mesh and programmed to acquire (202) a network identification from a mesh node (120), transmit (204) the network identification and appear as another mesh node to clients, and forward traffic from wireless clients to the mesh node. The communication device can operate (206) as a node in the mesh using the network identification and operate (208) as an independent router using a separate wireless router identifier. In another embodiment, the controller can be programmed to detect a network identification of an access point within a coverage area of a communication device (120), transmit a join message, and transmit authenticating information and security associations. Additional embodiments are disclosed.Type: GrantFiled: February 14, 2006Date of Patent: January 31, 2012Assignee: AT&T Intellectual Property I, L.P.Inventors: Feng Wang, Rias Muhamed
-
Distributed computation of precoding weights for coordinated multipoint transmission on the downlink
Patent number: 8107965Abstract: In a Coordinated Multi-point (CoMP) system, the base station (BS) in each serving cell (or sector) is allowed to use not only its own antennas, but also the antennas of neighboring BSs to transmit to mobile terminals in the serving cell to form a floating CoMP cell. The serving BS in each floating CoMP cell computes tentative linear precoding weights for transmissions from the coordinating BSs in the floating CoMP cell to users in the serving cell of the floating CoMP cell. The serving BS determines the power availability for transmit antennas in the floating CoMP cell that are shared with other floating CoMP cells, and scales the tentative precoding weights based on the power availability of the shared transmit antennas to determine final precoding weights so that the power constraints of the shared transmit antennas will not be violated.Type: GrantFiled: August 26, 2009Date of Patent: January 31, 2012Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Dennis Hui, Kambiz Zangi -
Patent number: 8102811Abstract: The present invention relates to providing mobility management protocol information to a multi-mode mobile terminal for performing handover between heterogeneous networks. Preferably, the present invention establishes a unified interface to an upper layer of the mobile terminal for managing messages to and from at least one of a homogeneous network and a heterogeneous network, establishes a connection with an accessible link of at least one of a homogeneous network and a heterogeneous network for performing handover, and receives in the upper layer information from the unified interface related to the established connection. Preferably, the step of receiving the information includes receiving mobility management protocol information of the at least one of a homogeneous network and a heterogeneous network. Accordingly, the mobile terminal reduces a time duration for establishing a Care of Address (CoA) using a new mobility management protocol of a new network the mobile terminal has been handed over to.Type: GrantFiled: March 6, 2006Date of Patent: January 24, 2012Assignee: LG Electronics Inc.Inventors: Yong Won Kwak, Yong Ho Kim, Jin Lee
-
Patent number: 8095139Abstract: A method and apparatus for assigning cell and resource blocks to a wireless transmit/receive units (WTRU) in a wireless communication system including a resource management unit and a plurality of cells having resource blocks are disclosed. The WTRU is currently associated with a particular one of the cells. Path losses between the WTRU and cells neighboring the particular cell are determined. The average level of inter-cell interference on each resource block at each cell neighboring the particular cell is then determined. A signal-to-interference ratio (SIR) is then determined to support a guaranteed bit rate of the WTRU on an uplink.Type: GrantFiled: September 11, 2007Date of Patent: January 10, 2012Assignee: InterDigital Technology CorporationInventor: Paul Marinier
-
Patent number: 8081996Abstract: A wireless communications method and system includes an industrial sensor network that comprises a plurality of industrial sensors, which communicates with the industrial sensor network at a particular operating frequency band through one or more infrastructure nodes associated with the industrial sensor network. A wireless communications network is established, which includes a plurality of wireless communications stations that communicates with one or more of the infrastructure nodes. The infrastructure node(s) can be modified to additionally function as a wireless access point for the wireless communications network utilizing Time Division Multiplexing Algorithm (TDMA), thereby permitting the industrial sensor network to coexist and accommodate the wireless communications network.Type: GrantFiled: May 16, 2006Date of Patent: December 20, 2011Assignee: Honeywell International Inc.Inventors: Soumitri N. Kolavennu, Yunjung Yi
-
Patent number: 8077684Abstract: A wireless device is capable of communicating within a local area network (LAN) and a personal area network (PAN) concurrently, using a single wireless networking module or circuit. A wireless access point within an infrastructure-based network is used to manage the creation, maintenance, and termination of PANs within the LAN framework.Type: GrantFiled: December 29, 2006Date of Patent: December 13, 2011Assignee: Intel CorporationInventor: Izoslav Tchigevsky
-
Patent number: 8078221Abstract: A wireless, multi-modal access device and system adapted to integrate a number of communications networks operating in differing communication modes to facilitate transfer of communication links during a communication session to promote efficient use of the communication networks. The system includes a plurality of Universal Multi-Modal Access Devices UMMAD that are capable of operating at different frequencies and different protocols (TDMA, AMPS, CDMA, GSM, PCS etc) to communicate with any one of a number of Wide Bandwidth Gateways (WBG), which are each capable of communication using one or more of the protocols. The communication links may be switched from one WBG to another or from one protocol to another during a communication session to continue the session under the control of a Universal System Traffic Controller. Numerous other applications of the UMMADs for unique identification and e-commerce are disclosed.Type: GrantFiled: November 11, 2009Date of Patent: December 13, 2011Assignee: MLR, LLCInventor: Charles M. Leedom, Jr.
-
Patent number: 8068842Abstract: 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).Type: GrantFiled: September 28, 2009Date of Patent: November 29, 2011Assignee: QUALCOMM IncorporatedInventors: Shlomo Nizri, Michael Vakulenko, Atai Levy, Ron Nevo, Sergio Kolor
-
Patent number: 8064401Abstract: Systems and methodologies are described that facilitate handing off from a first sector to a second sector. An established link to the first sector may be employed to communicate with the second sector. A handoff request from a wireless terminal to the second sector and an associated handoff response from the second sector to the wireless terminal may both traverse the first sector.Type: GrantFiled: July 14, 2006Date of Patent: November 22, 2011Assignee: QUALCOMM IncorporatedInventors: Pablo Anigstein, Junyi Li, Murari Srinivasan, Rajiv Laroia
-
Patent number: 8055262Abstract: Several embodiments of an IMS communications network are disclosed. In one embodiment, the network comprises a plurality of dispatch application servers (DAS), an S-CSCF, and an event notification server. The S-CSCF is adapted to receive an IMS registration request from a dispatch client, authenticate the registration request, send a registration confirmation to the dispatch client, and send a notification indicating the registration of the dispatch client to an event notification server. The event notification server is adapted to receive the notification from the S-CSCF, select a DAS, and send a notification to the selected DAS indicating an assignment to provide dispatch service to the dispatch client. In another embodiment, the registration notification to the event notification server is sent from the dispatch client, instead of the S-CSCF.Type: GrantFiled: July 5, 2006Date of Patent: November 8, 2011Assignee: Nextel Communications Inc.Inventors: Trinh D. Vu, Ojas Choksi, Ramesh Kalathur, Moshe Stoler, Hung Bui, David Kuan
-
Patent number: 8045532Abstract: In one embodiment, a method includes receive a connection event message including information identifying a wireless node, wherein the identifying information comprises a wireless node identifier and an area code associated with the wireless node; determine, based on the area code, whether the wireless node is connected to its home wireless network region; add the identifying information to a location services table; and if the wireless node is not connected to its home network region, transmit a remote connection event message to a home area code authority server corresponding to the wireless node.Type: GrantFiled: November 9, 2006Date of Patent: October 25, 2011Assignee: Cisco Technology, Inc.Inventors: Allan Thomson, David S. Stephenson
-
Patent number: 8045974Abstract: A method for establishing an optimized communication link between mobile network nodes. An interface management module of a first mobile network node checks the mobile network node for available network interfaces and establishes a look-up table with the available network interfaces. Based on the look-up table at least one signalling channel is set up for configuration data with communication parameters and/or security parameters via one of the available network interfaces with a second mobile network node. Based on the look-up table with the communication parameters and the security parameters at least one data channel is established between the first mobile network node and the second mobile network node. Both the at least one signalling channel and the at least one data channel are able to be set up via one or more network interfaces.Type: GrantFiled: August 17, 2004Date of Patent: October 25, 2011Assignee: Swisscom AGInventors: Marc Danzeisen, Michael Schaedler, Daniel Rodellar
-
Patent number: 8040859Abstract: A location of node i in a network having a plurality of nodes is identified by intersecting regions that are guaranteed to contain the node i with respect the other nodes that are neighbors of the node i and iteratively minimizing the size of the intersection region containing the node i.Type: GrantFiled: February 17, 2006Date of Patent: October 18, 2011Assignee: Honeywell International Inc.Inventors: Atish Datta Chowdhury, Koushik Sinha
-
Patent number: 8040858Abstract: A system and methods (300, 500) are disclosed for enabling communications between a communication device and a wireless access point. A system that incorporates teachings of the present disclosure may include, for example, a multimode communication device (MCD) (106) having a controller (214) for managing operations of a multimode wireless transceiver (202) supporting communications on a plurality of wireless access technologies (103). The controller can be programmed to transmit (324) to a network management system (NMS) (100) over a first wireless access technology a request for configuration information associated with a wireless access point, receive (326) the configuration information from the NMS, and enable (320) communications with the wireless access point over a second wireless access technology according to the configuration information. Embodiments for the NMS are also disclosed.Type: GrantFiled: December 20, 2005Date of Patent: October 18, 2011Assignee: AT&T Intellectual Property I, LPInventors: Rias Muhamed, Anil K. Doradla
-
Patent number: 8041360Abstract: 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.Type: GrantFiled: September 1, 2010Date of Patent: October 18, 2011Assignee: Kraasten Bros. Fund B.V. LLCInventors: Oliver C. Ibe, Jianyu Zeng
-
Patent number: 8036670Abstract: Concurrent WIMAX and GSM operation is facilitated in a user device by coordinating for WiMAX absence periods during WiMAX frames that may conflict with corresponding GSM frames.Type: GrantFiled: December 29, 2006Date of Patent: October 11, 2011Assignee: Intel CorporationInventors: Giora Rayzman, Miri Ratner
-
Patent number: 8036683Abstract: Techniques involving the coordination of wireless activities are disclosed. For example, an apparatus may include two or more transceivers. These transceivers may include a first transceiver to communicate wirelessly across cellular links, and a second transceiver to communicate wirelessly across wireless data networking links. The apparatus may also include controllers, each controlling wireless communications of a corresponding transceiver. Information may be exchanged with each other regarding operation of the transceivers. Through the exchange of such information, activity (e.g., transmission and reception of wireless signals) may be coordinated among the transceivers.Type: GrantFiled: October 31, 2006Date of Patent: October 11, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jerome Tu, Jianxiong Shi, Olivier Boireau, Isabel Mahe, Alexander Fertelmeister, Yury Fomin, Wen Zhao
-
Patent number: 8023956Abstract: A method for communications between neighboring wireless cells such as wireless regional area networks operating according to IEEE 802.22 specifications. The method involves scheduling inter-base station communications for over-the-air connections to allow neighboring base stations to communicate in environments where a single available channel is shared between the neighboring cells or where two or more channels used by two or more neighboring cells. In some embodiments, a bridge system, such as a bridge consumer premise equipment (CPE), positioned in an area of coverage overlap between two cells is used for inter-base station communications, and allocation and scheduling of bandwidth on the utilized channels is performed to provide interference free communications between the base stations. Existence announcements are provided in coexistence time slots and requests for bandwidth such as reserved and additional time slots are transmitted between the base stations using the coexistence time slots.Type: GrantFiled: April 24, 2007Date of Patent: September 20, 2011Assignee: STMicroelectronics, Inc.Inventor: Wendong Hu
-
Patent number: 8023953Abstract: 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.Type: GrantFiled: March 26, 2010Date of Patent: September 20, 2011Assignee: Intellectual Ventures I LLCInventors: Martin Zilliacus, Ari Koli
-
Patent number: 8023473Abstract: A multiple wireless networks structure comprising a plurality of beacon groups each comprising one or more devices communicating via an associated wireless network utilizing a superframe structure; wherein each device of each beacon group allocates a local control period and one or more neighbor control periods in each superframe; wherein the neighbor control periods in each beacon group cover all one or more control periods of other beacon groups detected by one or more of the devices in said each beacon group to an extent as said control periods do not overlap with the local control period in said each beacon group.Type: GrantFiled: December 14, 2004Date of Patent: September 20, 2011Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Hong Cheng Michael Sim
-
Method and Apparatus for Releasing Blank Zone by Macro Base Station in Wireless Communication System
Publication number: 20110223923Abstract: Provided are a method and an apparatus for releasing a blank zone by a macro base station in a wireless communication system. The macro base station: receives channel information from a macro terminal that is serviced therefrom; determines based on the channel information whether or not a downlink blank zone allocated to a resource zone of a femto bas station is released; and transmits downlink blank zone release information to the femto base station if the downlink blank zone is supposed to be released. The downlink blank zone is a resource zone which restricts the downlink transmission, among all the resource zones used by the femto base station. The channel information may be the information about the distance between the femto base station and the macro terminal.Type: ApplicationFiled: December 8, 2008Publication date: September 15, 2011Inventors: Han Gyu Cho, Doo Hyun Sung -
Patent number: 8014781Abstract: To avoid or reduce intra-cell interference, each sector of a cell is associated with a sector-specific set of system resources (e.g., subbands) and at least one non-overlapping common set of system resources. Each common set for each sector includes system resources observing little or no interference from at least one other sector in the cell. The channel condition for a terminal in a given sector x is ascertained based on forward and/or reverse link measurements for the terminal. The terminal is assigned system resources from a common set or a sector-specific set for sector x based on the terminal's channel condition. For example, if the terminal observes high interference from another sector y, then the terminal is assigned system resources from a common set that observes little or no interference from sector y. The techniques may be used for an OFDMA system that uses frequency hopping.Type: GrantFiled: October 20, 2004Date of Patent: September 6, 2011Assignee: QUALCOMM IncorporatedInventors: Tingfang Ji, Avneesh Agrawal
-
Patent number: 7990912Abstract: Telephone calls between a mobile station (MS) and the mobile network or PSTN are routed through the Internet via VoIP using a femtocell, as opposed to the traditional macrocellular network. The femtocell can comprise a USB Transceiver Station that is connected to a personal computer through a universal serial bus port, which provides both power and a multi-megabit per second connection between the personal computer and the USB transceiver station. The USB transceiver station can comprise a microcontroller to manage signaling between the RF front end/baseband processor and the personal computer, as well as a precise timing mechanism to assist the synchronization of femtocell timing with the surrounding macrocellular network, if it is present. The USB transceiver station can have a compact form factor that facilitates a high degree of portability by the subscriber, such as being readily attachable to their keychain.Type: GrantFiled: April 2, 2007Date of Patent: August 2, 2011Assignee: Go2Call.com, Inc.Inventors: John A. Nix, Jr., Andrew Kwong, John Wakeman
-
Patent number: 7983667Abstract: In one embodiment, a method for generating a radio-frequency coverage map. The method includes receiving coverage map data comprising a plurality of locations within a region, and an identification of a location in the plurality of locations corresponding to a radio transceiver, wherein the locations within the region are represented by at least corresponding x- and y-terms of a Cartesian coordinate system. The method further includes receiving calibration data comprising a plurality of observed signal strength values at corresponding ones of the plurality of locations, converting the x- and y-terms of the locations of the coverage map data to corresponding first and second warped coordinate terms of a warped coordinate system, and computing, using linear interpolation and the first and second warped coordinate terms, predicted received signal strength values at one or more locations in the coverage map based on the calibration data.Type: GrantFiled: October 5, 2006Date of Patent: July 19, 2011Assignee: Cisco Technology, Inc.Inventors: Brian Donald Hart, Robert J. Friday, Milind Paranjpe
-
Patent number: 7978648Abstract: Method and apparatus for data access for a mobile terminal comprising a module for determining whether first and second modes of wireless network coverage is available, a module for selecting the first mode if available, a module for attempting access via the second mode on failure to establish access via the first mode and a module for monitoring availability of the first mode. Even when a connection is established via the second mode, availability of the first mode is monitored and access attempted, when second mode connection is idle.Type: GrantFiled: June 18, 2010Date of Patent: July 12, 2011Assignee: Research In Motion LimitedInventors: Hossain Asif, David Ma
-
Patent number: 7978666Abstract: Network node control is described that includes node wakeup scheduling that reduces the energy consumption of levels of nodes and reduces the delay of information transfer through the network. The node wakeup scheduling includes a crossed ladder pattern that combines two wakeups in one level. The node wakeup scheduling also includes an adaptive version of the crossed ladder pattern that changes the wakeup patterns of the crossed ladder over time to provide uniform energy savings. The network node control also includes the use of multiple trees to transfer information through a network. This multi-parent node assignment assigns multiple parents with different wakeup schedules to each node in the network. This multi-parent assignment reduces the delay in transmission of information through the network and also increases energy efficiency in the nodes.Type: GrantFiled: October 31, 2005Date of Patent: July 12, 2011Assignee: Robert Bosch GmbHInventors: Abtin Keshavarzian, Lakshmi Venkatraman, Huang Lee
-
Patent number: 7974621Abstract: A method and apparatus for transitioning between radio link protocols in a packet-based real-time media communication system. A wireless communication device such as a cell phone will operate under one radio link protocol (such as IS-856, also known as 1xEV-DO) to engage in packet-based signaling for setup of a packet-based real-time media session such as a push-to-talk session. Once the session is set up, the wireless communication device will then automatically transition to operate under a different radio link protocol (such as IS-2000, also known as 1xRTT), and will engage in packet-based real-time media communication in the session over that different radio link protocol. Preferably, the radio link protocol used for session setup signaling will provide for reduced setup latency, while the radio link protocol used for bearer communication in the session will provide for reduced jitter and improved real-time media communication.Type: GrantFiled: November 18, 2004Date of Patent: July 5, 2011Assignee: Sprint Spectrum L.P.Inventors: Tong Zhou, David Mohan
-
Patent number: 7969953Abstract: A method, system, and computer-readable media are provided for allowing a mobile device to maintain communication connectivity during a handoff between wireless access points. In one aspect, the method may include negotiating security association information and establishing a first communication tunnel by tunneling an inner IP address within a first outer IP address. The method may further include authenticating a request for establishing a second communication tunnel by identifying the negotiated security association information within the request. Additionally, the method may include establishing the second communication tunnel by tunneling the inner IP address within a second outer IP address. Moreover, the method may include pushing data associated with the communication session through the second communication tunnel.Type: GrantFiled: January 22, 2007Date of Patent: June 28, 2011Assignee: Sprint Communications Company L.P.Inventors: Jeremy R. Breau, Sohel Khan
-
Patent number: 7966042Abstract: A Ubicell base station includes a Ubicell base station, one or more Ubicell core network elements, and an integrated management server. The Ubicell base identifies position information thereof using a GPS module, and at a time of setup, provides environment setting information including the position information thereof. Each Ubicell core network element, upon receiving environment setting information of an arbitrary Ubicell base station, generates an environment construction information file of the arbitrary Ubicell base station, registers the arbitrary Ubicell base station, and sends the environment construction information file to the arbitrary Ubicell base station. The integrated management server identifies the Ubicell core network element in a corresponding position based on the environment setting information, provided from the Ubicell base station, and provides the environment setting information of the Ubicell base station to the Ubicell core network element.Type: GrantFiled: November 9, 2007Date of Patent: June 21, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Hee-Gu Kim
-
Patent number: 7957694Abstract: A first and/or a second communications system may provide communications service over a geographic area. A method of operating the first and/or the second communications systems may include generating a measure of aggregate interference reaching a satellite of the second communications system substantially from devices of the first communications system. The measure of aggregate interference reaching the satellite of the second communications system may be transmitted to an element of the first communications system.Type: GrantFiled: August 10, 2005Date of Patent: June 7, 2011Assignee: ATC Technologies, LLCInventors: Peter D. Karabinis, Santanu Dutta
-
Patent number: 7957352Abstract: Various schemes for performing inter-system handoff, e.g., from a UTRAN to a cdma2000 radio access network (RAN) are described. For a MAHHO scheme, the UTRAN uses measurements obtained by a multi-RAT device to determine suitable cdma2000 cell(s) for handover. The measurements are obtained by a candidate frequency search procedure, and the handover is accomplished by a handoff execution procedure. For a MDHHO scheme, the UTRAN relies on location information for the multi-RAT device to select suitable cdma2000 cell(s) for handover. For a CRHHO scheme, a new call is established on the cdma2000 RAN and the pending call on the UTRAN is released in a manner such that the handover appears seamless to the multi-RAT device. The multi-RAT device includes two modem processors that perform processing for the UTRAN and cdma2000 RAN and an application processor that controls the modem processors.Type: GrantFiled: February 24, 2004Date of Patent: June 7, 2011Assignee: QUALCOMM IncorporatedInventors: Vieri Vanghi, Philip Kenneth Price
-
Patent number: 7957742Abstract: A network includes access points that admit/terminate mobile station associations based upon the loading level of the access point and/or whether a mobile station can associate with a further access point. Mobile stations transmit information indicative of the access points to which they can associate. The access points determine whether to admit/terminate a mobile station association based upon access point loading.Type: GrantFiled: June 20, 2008Date of Patent: June 7, 2011Assignee: AT&T Intellectual Property II, L.P.Inventors: Zoran Kostic, Kin K Leung, Hujun Yin
-
Patent number: 7949344Abstract: A system is described. The system includes a fixed microwave path pair between a first site and a second site and an additional microwave path between the first site and a third site. A transceiver portion of the first site and a transceiver portion of the second site are configured to transmit on the fixed microwave path pair on TDD-FDD reversed paired frequencies. The transceiver portion of the first site is configured to transmit to the transceiver portion of the third site on one frequency of the paired frequencies using the side lobe radiation of an antenna at the first site.Type: GrantFiled: February 13, 2007Date of Patent: May 24, 2011Assignee: Wireless Strategies, Inc.Inventor: Michael Mulcay
-
Patent number: 7944897Abstract: A method and system for communication in an IEEE 802.11n WLAN including L-stations and HT-stations, wherein a signaling field such as a small legacy format frame is appended at the end of a L-SIG TXOP Protection sequence in order to terminate the EIFS procedure at L-stations. This increases the probability for L-stations to obtain access to a shared communication channel relative to HT-stations.Type: GrantFiled: October 30, 2006Date of Patent: May 17, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Huai-Rong Shao, Chiu Ngo
-
Publication number: 20110105132Abstract: The present application describes methods involving one or more mobile units, one or more macrocells providing wireless connectivity to one or more first coverage areas, and one or more femtocell providing wireless connectivity to one or more second coverage areas overlapping with the first coverage area(s). One embodiment of the method includes determining, at the femtocell(s), whether to transmit one or more beacon signal from the femtocell(s) on one or more carriers associated with the macrocell(s) based on whether mobile unit(s) are located within the first coverage area(s).Type: ApplicationFiled: November 5, 2009Publication date: May 5, 2011Inventors: Subramanian Vasudevan, Jialin Zou
-
Publication number: 20110092215Abstract: A small base station may report to a network controller about whether a radio frequency (RF) signal transmitted from a macro base station is sensed. The network controller may control an operational mode of the small base station depending on whether the RF signal is sensed. Accordingly, the small base station may not transmit the RF signal at all times, and thus, it is possible to reduce an interference between a small cell and a macro cell or interference between the small cell and another small cell.Type: ApplicationFiled: July 8, 2010Publication date: April 21, 2011Applicant: PANTECH CO., LTD.Inventor: Chang Hyun BACK
-
Patent number: 7925260Abstract: 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.Type: GrantFiled: October 23, 2007Date of Patent: April 12, 2011Assignee: AT&T Intellectual Property II, L.P.Inventors: Mathilde Benveniste, Sushil Kumar Prabhu