Hierarchical Cell Structure Patents (Class 455/449)
-
Patent number: 8050725Abstract: A method for paging access terminals. The method includes: a network entity sends a paging message to a target AN. The paging message carries the information required for calculating the time when the AT wakes to monitor the paging message. The information includes the absolute time that is determined according to the time when the AT previously shifts from the connected state to the idle state. Upon receipt of the paging message, the target AN determines when to send the paging message to the AT according to the information carried in the paging message. The present embodiments also disclose a system and apparatus for paging access terminals. The apparatus is a network entity that sends the paging message. The method, system and apparatus can be used to determine the time when the AT wakes to monitor the paging message, thus ensuring that the AT paging is not missed.Type: GrantFiled: March 31, 2009Date of Patent: November 1, 2011Assignee: Huawei Technologies Co., Ltd.Inventor: Mingxia Xu
-
Publication number: 20110263264Abstract: A method for operation of a WiMAX network, the network including a WiMAX macrocell network with one or more macrocell base stations and at least one femtocell base station, the macrocell base stations and the at least one femtocell base station being configured to offer connectivity to mobile stations is described. The method is characterized in that a communication scheme between the macrocell network and the at least one femtocells base station is defined according to which a direct wireless link is established between the at least one femtocell base station and one or more of the macrocell base stations located within the coverage area of the at least one femtocell base station. Furthermore, a corresponding WiMAX network is disclosed.Type: ApplicationFiled: October 27, 2009Publication date: October 27, 2011Applicant: NEC EUROPE LTD.Inventors: Linghang Fan, Andreas Maeder, Jun Zhou, Yuefeng Zhou
-
Patent number: 8041359Abstract: Disclosed herein is a method and apparatus for maintaining communication between a dependent and a communications network when the dependent is outside a coverage area associated with its master using a controller and a communications network. In one embodiment, when the dependent is in a piconet, the dependent is within communication range of its master using a communication channel on frequency band fband(1). When the dependent moves outside the piconet, the dependent should be within communication range of the controller and, thus, switches to another communication channel within frequency band fband(1) such that it may communicate with the controller. When the dependent moves outside the communication range of the controller, the dependent should be within communication range of a communications network or a base station and, thus, switches to a communication channel within another frequency band fband(2).Type: GrantFiled: August 2, 1999Date of Patent: October 18, 2011Assignee: Alcatel LucentInventor: Eshwar Pittampalli
-
Publication number: 20110250890Abstract: The present invention discloses a method and an apparatus for neighbor cell configuration and a method and an apparatus for femtocell base station configuration. The neighbor cell configuration method includes: obtaining information of at least one macro cell; obtaining neighbor cell information of the at least one macro cell; and performing neighbor cell configuration according to the information of the at least one macro cell and the neighbor cell information. With the method and apparatus for neighbor cell configuration and the method and apparatus for femtocell base station configuration, complete femtocell base station neighbor cell information is obtained so that a femtocell base station can be configured automatically. This avoids call drops during handovers and increases the success rate of handovers, and the implementation is easy.Type: ApplicationFiled: June 24, 2011Publication date: October 13, 2011Inventor: Xin CHEN
-
Patent number: 8036671Abstract: The present invention relates to a scheduler selector and a method for improving network quality by controlling intercellular interference of a multi-cellular mobile radio communication network. The radio communication traffic is controlled by a user traffic scheduler principle. The network quality is improved by selecting another scheduling principle among a number of pre-defined and selectable scheduling principles than the scheduling principle working for the moment in a cell in said network. Said selection being initiated as a result of an intracellular Quality data processing wherein the network quality is determined to be possible to improve.Type: GrantFiled: December 27, 2005Date of Patent: October 11, 2011Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Anders Furuskär, Per Skillermark
-
Patent number: 8023951Abstract: A cellular communication system is provided. According to one embodiment, the communication system includes at least one cell. The at least one cell is defined by a coverage layer defining a coverage of the at least one cell and a capacity layer at least partly defining a capacity of the at least one cell.Type: GrantFiled: November 4, 2003Date of Patent: September 20, 2011Assignee: Nokia Siemens Networks OyInventor: Jyrki Mattila
-
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: 8000713Abstract: In a mobile telecommunications system comprising a network of a plurality of cells and at least one user equipment device, the user equipment is arranged, when the user equipment re-configures itself to enter a new state or performs cell reselection, to read broadcast system information and, when the broadcast system information indicates a change in system information, to update the system information of the user equipment device.Type: GrantFiled: March 18, 2008Date of Patent: August 16, 2011Assignee: Research In Motion LimitedInventors: Andrew John Farnsworth, Gideon Roberts
-
Patent number: 7983685Abstract: Methods and apparatus for global wireless sensor network architecture and protocol for remote supervision, asset control and operational management based on localized clusters of autonomous sensor/supervision/operational sensor nodes capable of ad hoc interconnection with nearby nodes and connection to gateway nodes with increased network functionality. These localized cluster nodes send data to gateway nodes either directly or through multi-hop transactions. The gateway nodes are, in turn, connected to other gateway nodes and operations control centers either through wireless or wired data communications links. Utilizing the Internet for long range interconnectivity, the network is scaleable to a global level. The resulting network is based on an ad hoc mesh topology to allow flexibility in network modification and expansion and is comprised of a tiered structure defined by increasing functionality.Type: GrantFiled: March 16, 2007Date of Patent: July 19, 2011Assignee: Innovative Wireless Technologies, Inc.Inventors: James E Silverstrim, W. Eric Holland, Luke Koleszar, Paul Carpenter
-
Patent number: 7984137Abstract: The invention is directed to techniques for maintaining a map of node relationships for a network of nodes (e.g., network of computers). In one example, the map of node relationships represents relationships overlaying and typically different from the network of physical connections among the nodes. Each child node periodically checks in with its parent nodes, and the parent nodes can thus determine when a child node has terminated a relationship with the parent or created a new relationship with a new parent. Changes in relationships propagate upward through the network of nodes so that each node maintains a map of the relationships among the descendants of that node. A root node receives the propagated change relationship information and maintains a map of the entire network and valid pathways through the network.Type: GrantFiled: May 10, 2006Date of Patent: July 19, 2011Assignee: Cisco Technology, Inc.Inventors: James W. O'Toole, Jr., John J. Jannotti
-
Patent number: 7970377Abstract: A communications base station is installed at a selected new location and the base station, prior to going “on line” monitors the wireless traffic from other base stations within interference range of the new base station's coverage area. The new base station also monitors the wireless traffic between mobile devices within its coverage area and these other base stations. Based upon these monitored conditions, as well as other known conditions, the new base station then determines the transmitting parameter configuration it should imply in order to achieve a desired optimization between capacity and coverage area. After the new base station is on line, a central control can monitor the entire network to determine if any additional changes are necessary and if so the new transceiver, or any other transceiver, can be instructed to monitor itself with respect to interference and to take corrective action to improve overall network coverage and capacity.Type: GrantFiled: January 4, 2010Date of Patent: June 28, 2011Assignee: Adaptix, Inc.Inventor: Douglas O. Reudink
-
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: 7953403Abstract: A method and arrangement for detecting a radio coverage in a synchronous multicellular mobile radio system having a multitude of synchronous base stations that are connected to an evaluating unit are provided. All base stations are operated in succession in a measuring operating mod. A respective field intensity of base stations that are locally adjacent and in a normal operating mode is measured, and the respectively measured field intensity data are evaluated by the evaluating unit. This enables a sufficient radio coverage to be determined in a highly cost-effective manner and, optionally, to be corrected.Type: GrantFiled: January 14, 2005Date of Patent: May 31, 2011Assignee: Siemens Enterprise Communications GmbH & Co. KGInventor: Robert Nientiedt
-
Patent number: 7949350Abstract: To provide a mobile communication system which can distribute area information from a radio Node to a mobile terminal in a unit of cell. A mobile communication system comprising: a radio Node having a plurality of cells; host apparatus connected to the radio Node so as to be able to communicate information with the radio Node; and a mobile terminal receiving information distributed from the radio Node, wherein area information different for each cell is distributed from the radio Node to the mobile terminals 40 existing in the cell included in the radio Node, the area information is transmitted, together with control information including type information added according to a content of the area information, from the host apparatus to the radio Node, and the cell to be distributed with the information is determined based on the type information.Type: GrantFiled: April 7, 2004Date of Patent: May 24, 2011Assignee: Evolium S.A.S.Inventors: Hirotoshi Satou, Masao Otsuka, Koji Matsushita, Sachiko Naito, Hiroshi Tomozawa
-
Patent number: 7945268Abstract: An apparatus and a method for allocating IDcells in a wireless communication system are provided, in which an initial IDcell allocation is performed by allocating entire sectors to elements of an N×M IDcell matrix, a sector pair with the highest proximity is selected for each IDcell in the initial allocation, an IDcell with a sector pair having the highest of the proximities of the selected sector pairs is determined as a target IDcell, one sector of the sector pair with the highest proximity for the target IDcell is selected as a target sector, a predetermined number of sectors are selected for each of the other IDcells except for the target IDcell, from among sectors to which the each of the other IDcells is allocated, and the IDcell of the target sector is swapped with the IDcell of a sector satisfying a first condition among the selected sectors.Type: GrantFiled: October 12, 2007Date of Patent: May 17, 2011Assignees: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and TechnologyInventors: Ki-Won Sung, Chae-Young Lee, Seung-Yong Ham, Ho-Dong Kim, Sang-Min Oh
-
Patent number: 7945264Abstract: A mobile station (107, 200) for use in a cellular communication system (100) includes a processor (214) operable to determine whether the mobile station should undergo cell re-selection by handover from a first base station (101) to a second base station (102), wherein the determination includes comparing a value of a property (RSSI) of a signal received from the second base station with a value of the same property of a signal received from the first base station and calculating whether the difference between the two values is greater than a pre-determined reference difference (SRH), characterised in that the processor is operable to apply in the difference calculation a reference difference (SRH(0), SRH(1) . . . ) which varies as a function of time during an idle mode of operation of the mobile station. Also disclosed is a system and method incorporating the mobile station.Type: GrantFiled: June 7, 2007Date of Patent: May 17, 2011Assignee: Motorola Solutions, Inc.Inventors: Imanuel Aminov, Inna Kogan, Boaz Or-Shraga, Menahem Raif
-
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
-
Patent number: 7912474Abstract: When a cell load becomes higher than a call setup threshold value for a first channel (CS channel), a second channel (PS channel) is changed into a channel having a low transmission rate. Consequently, the cell load is reduced and no cell loss occurs in the first channel. Therefore, the call loss rate of a first communication service is lowered. Simultaneously, a handover threshold value is higher than the call setup threshold value for the first channel so that a failure rate of handover is lowered.Type: GrantFiled: April 6, 2005Date of Patent: March 22, 2011Assignee: NEC CorporationInventors: Kojiro Hamabe, Kenji Kawaguchi
-
Patent number: 7899053Abstract: An optimal path routing method is provided for transmitting data from a source node to a destination node. The optimal path setting method includes transmitting a shortcut request (SCRQ) message from the source node to a topology server; determining shortcut information at the topology server based on the SCRQ message; and transmitting a shortcut notification (SCNF) message containing the shortcut information from the topology server to the destination node.Type: GrantFiled: May 10, 2006Date of Patent: March 1, 2011Assignees: Samsung Electronics Co., Ltd., City University of New YorkInventors: Yong Liu, Myung-jong Lee
-
Patent number: 7890103Abstract: A mobile station used in a mobile communication system which accepts location registrations from mobile stations in order to perform mobile station location management, the mobile station being comprising a detection unit which detects that it is in an overlap region of hierarchical location registration areas; and a delay unit which delays location registration when the detection has been made.Type: GrantFiled: July 29, 2005Date of Patent: February 15, 2011Assignee: Fujitsu LimitedInventor: Atsushi Shinozaki
-
Patent number: 7881191Abstract: The present invention sets forth a method for performing packet combined scheduling of dedicated transport channels for packet services in UMTS downlinks, comprising the following steps: a) prior to each DCH scheduling period, performing pre-selection processing of a transport format combination of each DPCH according to the predetermined restriction conditions for the DCH combined packet scheduling, so as to determine a usable transport format combination set for each DPCH; b) restricting a total downlink transmit power of DCHs for NRT packet services to a schedulable power not exceeding a schedulable power value in the estimation of a total downlink power during said scheduling period; c) based on the fairness of DCH transportation and the QoS requirements of the DCH-borne services, determining weighted values which the respective DCHs correspond to in the optimization of the DCH combined packet scheduling; and d) based on the results of steps a), b), and c), calculating the maximum number of bits which eacType: GrantFiled: November 12, 2003Date of Patent: February 1, 2011Assignee: Utstarcom (China) Co. Ltd.Inventors: Sheng Liu, Baijun Zhao
-
Patent number: 7877061Abstract: A method reduces channel interference in a communication system that includes base stations and terminal stations with each base station having a plurality of sectors, each sector having a channel, and with each terminal station associated with a sector of a base station. A first set of terminal stations associated with a first sector that may potentially interfere with a second set of terminal stations associated with a second sector is determined. A first frequency sub-channel for use by the first set of terminal stations is selected and a second frequency sub-channel for use by the second set of terminal stations is selected. Transmissions by the first set of terminal stations are coordinated with transmissions by the second set of terminal stations, thereby reducing channel interference between the terminal stations of the first set and the terminal stations of the second set, as seen by a base station in the first or second sector.Type: GrantFiled: December 28, 2006Date of Patent: January 25, 2011Assignee: Wi-LAN, Inc.Inventors: Israel Jay Klein, Shelden L. Gilbert, Kenneth L. Stanwood, Jacques Behar
-
Patent number: 7877108Abstract: The present invention relates to a method for balancing the distribution of interference between radio cells in a wireless communication system comprising cells in which subcarrier blocks are used for communication. A number of adjacent cells build a cell cluster. Moreover, the present invention relates to a corresponding method adapted for use in a system in which multi beam antennas or multiple antennas are used. Furthermore, the present invention relates to base stations performing the above method as well as a communication system comprising the base stations.Type: GrantFiled: November 5, 2004Date of Patent: January 25, 2011Assignee: Panasonic CorporationInventors: Christian Wengerter, Alexander Golitschek Edler Von Elbwart
-
Patent number: 7873362Abstract: A simple and reliable method for dimensioning CDMA based networks is achieved by a method for evaluating or dimensioning a radio network comprising the steps of—defining a radio network model comprising at least one radio base station and a plurality of mobile terminals, —for each mobile terminal in the model, defining a path gain value for a signal path between the mobile terminal and each of the radio base stations, said method being characterized by the steps of—for each mobile terminal, selecting at least one of said path gain values, —defining a data set comprising at least one parameter based on said selected at least one path gain value for each mobile terminal, and—performing dimensioning calculations on the data set. Especially if data sets are prestored the dimensioning calculations can be carried out in very short time.Type: GrantFiled: December 22, 2004Date of Patent: January 18, 2011Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Henrik Nyberg, Per Magnus Lundevall, Birgitta Olin
-
Patent number: 7865204Abstract: A system and method for providing information to a mobile station in a wireless network are provided. According to the method, a mobile station receives a control channel message wrapped in a unified control channel from a base station, and the mobile station determines a transmission type for incoming data, based upon the unified control channel. For a mobile station that operates with multiple transmission types, the mobile station does not have to monitor each of the control channels that the mobile station can receive, because the unified control channel tells the mobile station which transmission type to listen to. Therefore, the battery life of the mobile station can be extended, because the mobile station does not have to monitor numerous control channels.Type: GrantFiled: May 1, 2006Date of Patent: January 4, 2011Assignee: Nextel communications Inc.Inventor: Alex Shusterman
-
Patent number: 7860513Abstract: In a cell of a cellular wireless communication system, the SIR of at least one user in a sector of the cell is increased by temporarily reducing transmissions on a forward link in at least one other sector of the cell or a sector in another cell in accordance with a pattern.Type: GrantFiled: August 31, 2009Date of Patent: December 28, 2010Assignee: Airvana Network Solutions, Inc.Inventors: Sae-Young Chung, Dae-Young Kim, M. Vedat Eyuboglu, Gopal Harikumar
-
Patent number: 7860510Abstract: The transmission of data is controlled in a radio communication system having a hierarchical network structure. A low-hierarchy device transmits load-based signalling to a high-hierarchy device and the high-hierarchy device caries out control of the transmission capacities of the low-hierarchy device based on the load-based signalling.Type: GrantFiled: July 1, 2003Date of Patent: December 28, 2010Assignee: Siemens AktiengesellschaftInventors: Norbert Kroth, Jörg Schniedenharn
-
Patent number: 7840219Abstract: A method for selecting a subset of sites within a set of candidate sites for activating one or more radio stations of a telecommunications network includes building an initial solution of a subset of sites starting from a network configuration having the whole set of active candidate sites; and optimizing the initial solution for activating “inactive” sites and/or deactivating “active” sites, in order to minimize a predetermined cost function for the solution. The steps of building and optimizing the initial solution are adapted to define both solutions that have a geographic coverage area that is greater than a predefined minimum coverage area and to manage an amount of traffic that is greater than a predefined minimum expected traffic value. A processing system and a processing program or group of programs can be executed by the system when pre-arranged for performing the above method.Type: GrantFiled: February 27, 2004Date of Patent: November 23, 2010Assignee: Telecom Italia S.p.A.Inventors: Michele Ludovico, Giuseppe Minerva, Daniela Mirra, Massimiliano Panico, Massimiliano Petra, Emanuele Silio
-
Patent number: 7831254Abstract: A terminal device including a radio unit that adopts code division multiple access (cdma), which device omits unnecessary cell search by extending an in-zone cell monitoring cycle and a re-selection cycle in a case where under fixed conditions during cell search, when a physical layer and an RRC of the radio unit determine that a mobile phone remains still.Type: GrantFiled: March 30, 2005Date of Patent: November 9, 2010Assignee: NEC CorporationInventor: Kohei Natsume
-
Patent number: 7817734Abstract: A fixed-point IFFT device in an OFDMA digital modulator is disclosed, which comprises a sub-carrier activity detector configured to detect a number of active sub-carriers in an OFDMA symbol set being transmitted in a given OFDMA symbol period, a scale termination calculator configured to generate an output for determining at which stage to terminate the IFFT scaling as a predetermined function of the number of active sub-carriers, a scaling controller configured to generate a plurality of control signals based on the output of the scale termination calculator, and an IFFT unit having a plurality of scaling stages each of which is controlled by one of the generated control signals.Type: GrantFiled: October 17, 2006Date of Patent: October 19, 2010Assignee: Cisco Technology, Inc.Inventors: Kommanaboyina Subramanyam, Bror W. Peterson
-
Patent number: 7817592Abstract: A cellular communication system and method supporting both a time division duplexing (TDD) scheme and a frequency division duplexing (FDD) scheme. The apparatus includes a plurality of mobile stations, at least three first fixed stations communicate with the mobile station based on the FDD scheme, the first fixed station defining respective macro cells that are contiguous and form a virtual cell, and a cluster including at least one second fixed station communicating with the mobile stations based on the TDD scheme, the second fixed station defining a micro cell in the virtual cell.Type: GrantFiled: January 6, 2005Date of Patent: October 19, 2010Assignees: Samsung Electronics Co., Ltd., The University Court of the University of EdinburghInventors: Sang-Boh Yun, Sung-Hyun Cho, Yung-Soo Kim, Eung-Sun Kim, Yeon-Woo Lee, Stephen McLaughlin
-
Patent number: 7817644Abstract: Methods and apparatus for an ATM network for implementing a fair servicing of all connections during a back-logged condition through the use of a weighted fair queuing technique. The system is particularly suited for systems where the packets/cells are of a fixed size. Although some important approximations are made in the proposed implementation, all of the properties of an ideal weighted fair queuing algorithm are preserved. The sorting methods and apparatus are advantageous in that it is possible to maintain appropriate servicing of connections without sorting all of the individual connections. This may be accomplished by pre-sorting each of the individual virtual circuit connections into a finite number of predetermined bins according to a weight associated with the connection. Thereafter, only the bins need be sorted without having to sort each of the individual connections.Type: GrantFiled: November 12, 2004Date of Patent: October 19, 2010Assignee: Alcatel-Lucent USA Inc.Inventors: Chien Chen, Linhai He, Albert Kai-sun Wong
-
Patent number: 7813735Abstract: A method and apparatus for performing a power efficient cell search in a multi-cell wireless communication system are disclosed. A wireless transmit/receive unit (WTRU) having a memory that stores a cell identification list of prioritized previously top-ranked cell identities (IDs) is used to perform the cell search. A primary synchronization code (PSC) correlation peak location on a received signal is selected. A common pilot channel (CPICH) correlation value is determined by non-coherent integration of a local signal created based on a first cell ID on the cell identification list to the received signal. If the CPICH correlation value is greater than a noise threshold, thus indicating that the first cell ID is a newly found cell ID, or if a last cell ID in the cell identification list is reached, an additional determination is made as to whether there is more than one cell ID on the list having the same timing.Type: GrantFiled: March 20, 2007Date of Patent: October 12, 2010Assignee: InterDigital Technology CoporationInventors: Frederic Monfet, Alpaslan Demir, Mark L. Richards
-
Patent number: 7801525Abstract: A method for conserving paging and access channel bandwidth is provided in a wireless network (A) that includes: a plurality of cells (32) served by a mobile switching center (20); a paging channel for paging a mobile station (MS) (40) located within the cells (32); and, an access channel by which the MS (40) registers with the network (A). The method includes: defining a first set of location areas (LAs) including a plurality of paging LAs (50), each paging LA (50) including a plurality of cells (32); and, defining a second set of LAs including a plurality of registration LAs (60), each registration LA (60) including a plurality of paging LAs (50). As the MS travels, it registers with the network when entering one registration LA (60) from another, but it does not register when entering one paging LA (50) from another within the same registration LA (60).Type: GrantFiled: March 25, 2005Date of Patent: September 21, 2010Assignee: Alcatel-Lucent USA Inc.Inventors: David S. Benco, Karen Lee Redell
-
Publication number: 20100222062Abstract: A method of providing interference avoidance in a femtocell network may include receiving, at a femtocell base station defining a femtocell coverage area, an allocation of reserved resources for control signaling and data transmission in which the allocation is received from a macro cell base station defining a macro cell coverage area. The femtocell base station may be located and the femtocell includes a portion of the macro cell coverage area. The method may further include enabling usage of the reserved resources by the femtocell base station responsive to receipt of the allocation to provide interference avoidance with respect to femtocell and macro cell communications. The method may further include disabling usage of the reserved resources by the macro cell base station responsive to the allocation of the reserved resources.Type: ApplicationFiled: February 11, 2010Publication date: September 2, 2010Inventors: Chie-Ming Chou, Yung-Han Chen
-
Publication number: 20100216477Abstract: Systems and methods are described for allocating frequency resources based on historical usage data in a wireless communication system. A base station tracks its local usage pattern to generate a set of historical usage statistics. The base station may share those statistics with another base station node in the same network and with a server. The server may generate a frequency resource allocation plan to allocate shared resources most efficiently to various base stations based on historical usage information. Allocating frequency resources in this manner reduces the probability of cochannel interference between nearby cells and optimizes power solutions for local and regional radio access networks.Type: ApplicationFiled: February 22, 2010Publication date: August 26, 2010Applicant: EDEN ROCK COMMUNICATIONS, LLCInventor: David J. Ryan
-
Patent number: 7761117Abstract: A dual-mode mobile terminal capable of accessing two or more different mobile communication systems in which the terminal includes a controller for determining if the terminal is currently located in service areas of the mobile communication systems, and displaying an indicator of at least on of mobile communication systems, which currently provides a communication service to the terminal.Type: GrantFiled: August 25, 2004Date of Patent: July 20, 2010Assignee: Samsung Electronics Co., LtdInventor: Jae-Sun Park
-
Publication number: 20100178916Abstract: A method and system for notifying the availability of femtocells to an electronic device are provided. The method includes determining a fingerprint for each of the femtocells by a base station of a macrocell. The method also includes maintaining fingerprints of the femtocells by the base station. The method further includes notifying the availability of the femtocells to the electronic device based on corresponding fingerprints. The system includes a macrocell. The system also includes the femtocells in vicinity of the macrocell. The system further includes the electronic device that receives notification of the availability of the femtocells. Moreover, the system includes a base station in the macrocell to notify the availability of the femtocells to the electronic device.Type: ApplicationFiled: January 12, 2010Publication date: July 15, 2010Applicant: Samsung Electronics Co., Ltd.Inventor: Satish Nanjunda Swamy JAMADAGNI
-
Patent number: 7751822Abstract: A frequency reuse scheme that provides high spectral efficiency and reduced interference in areas where cell sites overlap is provided. Three frequencies are allocated per cell site, with each sector employing two frequencies, one frequency being transmitted at a higher power and the second frequency being transmitted at a lower power. The higher power frequency in one sector differs from the higher power frequency employed in the other two sectors, and the lower power frequency used in one sector differs from the lower power frequency used in the other two sectors.Type: GrantFiled: August 11, 2005Date of Patent: July 6, 2010Assignee: Nextel Communications Inc.Inventors: Douglas A. Hyslop, Matthew Starzec, Udit Thakore
-
Patent number: 7738875Abstract: Method for estimating position information of base stations as well as terminals for three dimensional centralized real-time spectrum management to achieve high spectral efficiency. In one aspect of the invention, the method comprises i) understanding the position information of plurality of base stations, wherein the plurality of terminals and the base stations form a wireless network, ii) determining, at the central controller, position of a terminal via plurality of communication wirelessly between the base stations and a terminal and between the base station and the central controller, iii) applying network wide real time knowledge at the central controller to electronically steerable antennas to use a resource in a different direction then where it is used by other base stations to achieve frequency reuse of one.Type: GrantFiled: December 22, 2006Date of Patent: June 15, 2010Assignee: Wichorus IncInventors: Rehan Jalil, Mustafa Ergen
-
Publication number: 20100111062Abstract: An apparatus and method for transmitting/receiving system information in a wireless communication system with a hierarchical cell structure are provided. A method for transmitting system information in a micro Base Station (BS) in a wireless communication system in which at least one micro cell exists within a macro cell includes transmitting first system information to a Mobile Station (MS) communicating with a macro BS within a micro cell and an MS communicating with a micro BS within the micro cell, and transmitting second system information to the MS communicating with the micro BS within the micro cell.Type: ApplicationFiled: November 5, 2009Publication date: May 6, 2010Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Young-Bo CHO, Seong-Hyeon CHAE, Jae-Hee CHO, Hee-Won KANG, Chang-Yoon OH, Byung-Wook JUN
-
Publication number: 20100113039Abstract: Overlaying a Wireless Macro Cell architecture on a Micro Cell network. WLAN MAC Address Translation (WMAT) is used to translate BSSIDs from the BSSID used to initialize a radio in an access node and identify communications between the radio in the access node and a controller, and the BSSID used over the air for Macro Cell operation. WMAT is used for transmit operations, translating the BSSID of outgoing packets to the Macro Cell BSSID prior to wireless transmission. On the receive side, packets undergo WMAT and transmission to the controller if the STN MAC address of the sender is in an ACK table associated with the radio, or the packet is one of a predetermined type. The ACK table is managed by transmit operations, and by control commands from the controller.Type: ApplicationFiled: October 30, 2008Publication date: May 6, 2010Inventor: Pradeep J. Iyer
-
Patent number: 7706846Abstract: A mobile terminal and method for re-selecting a cell in accordance with a residual amount of a battery capacity so that the number of times or re-selecting a cell is reduced in accordance with the residual amount of the battery capacity. Information on a plurality of cells having different priorities in a hierarchical cell structure (HCS) is received and a cell size measuring reference is re-set in accordance with the received cell information or the residual amount of the battery capacity so that the mobile terminal is connected to a cell selected among the cells measured in accordance with the re-set measuring reference.Type: GrantFiled: September 29, 2006Date of Patent: April 27, 2010Assignee: LG Electronics Inc.Inventor: Sung Jun Moon
-
Publication number: 20100075684Abstract: A method of transmitting cell information is disclosed. The method includes the steps of transmitting a primary broadcast channel at constant intervals in a cell of a mobile communications system; broadcasting, in the primary broadcast channel, scheduling information indicating a location of a first scheduling unit, including information to be broadcast in the cell; and broadcasting, in the first scheduling unit, information indicating whether the cell is a dominant cell or a subordinate cell.Type: ApplicationFiled: March 18, 2008Publication date: March 25, 2010Applicant: NTT DOCOMO, INC.Inventors: Mikio Iwamura, Minami Ishii, Yasuhiro Kato
-
Publication number: 20100056160Abstract: A Base Station (BS) includes an apparatus and method for transmitting cell information. The BS is in the a communication system of a small cell size in a wireless communication environment in which a communication system of a large cell size and the communication system of the small cell size are hierarchically constructed in the same area. The method includes confirming reference signal transmission information for transmitting a reference signal including its own cell information, if a reference signal transmission interval arrives according to the reference signal transmission information, transmitting the reference signal through an operation frequency of a macro BS of the large cell size including the BS itself, and, if it is not the reference signal transmission interval, providing service through its own operation frequency or operating in a power saving mode.Type: ApplicationFiled: August 28, 2009Publication date: March 4, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Yung-Soo Kim, Ju-Mi Lee, Jong-Hyung Kwun, Jae-Hee Cho, Young-Bo Cho, Byung-Wook Jun, Young-Hyun Jeon
-
Patent number: 7668547Abstract: A method of reselecting a cell by a mobile terminal in idle mode in a cellular telecommunication network in which the network sends to the terminal a list containing information with regard to the UMTS cells to be identified, and in which the mobile terminal periodically performs a series of procedures of identifying the cells and a series of intersystem measurements on the identified cells. Between two successive procedures of identification, the mobile terminal performs a series of procedures of measurement whose duration is fixed so that the total duration for performing a procedure of identification and the subsequent series of procedures of measurement is less than 25 seconds.Type: GrantFiled: August 12, 2008Date of Patent: February 23, 2010Assignee: NEC CorporationInventors: Javier Sanchez, Jean Pierre Lambert
-
Patent number: 7668530Abstract: A communications base station is installed at a selected new location and the base station, prior to going “on line” monitors the wireless traffic from other base stations within interference range of the new base station's coverage area. The new base station also monitors the wireless traffic between mobile devices within its coverage area and these other base stations. Based upon these monitored conditions, as well as other known conditions, the new base station then determines the transmitting parameter configuration it should imply in order to achieve a desired optimization between capacity and coverage area. After the new base station is on line, a central control can monitor the entire network to determine if any additional changes are necessary and if so the new transceiver, or any other transceiver, can be instructed to monitor itself with respect to interference and to take corrective action to improve overall network coverage and capacity.Type: GrantFiled: April 1, 2005Date of Patent: February 23, 2010Assignee: Adaptix, Inc.Inventor: Douglas O. Reudink
-
Publication number: 20100029287Abstract: A method for a cellular communications system (100) with a user (UE, 110) and a hierarchy of nodes between a UE (110) and an external network (150). The hierarchy comprises at least first (125) and second (130) nodes, and there can be a plurality of connections between the UE (110) and the network (150) via data channels (160) between the nodes, and plurality of data containers (170) with data regarding the data channels. A connection between a UE (110) and the external network (150) can be inactivated whilst the corresponding data container (170) is preserved, and an inactivated connection can be reactivated by the external network (150). When a connection is to be reactivated, the second node (130) utilizes information from the external network (150) in order to reactivate the data channel or channels which is/are concerned and which have had their data containers (170) preserved.Type: ApplicationFiled: December 27, 2006Publication date: February 4, 2010Applicant: Telefonaktiebolaget L M Ericsson (Publ)Inventor: Folke Ahlstrom
-
Patent number: 7656835Abstract: The present invention relates to a method for informing changed link properties in a system in which a mobile node is communicating by IP (Internet Protocol) with a correspondent node and utilizing a first link layer configuration. A need to change link layer communication to use a second link layer configuration is detected. Property information indicating a link layer property applied or to be applied in communication utilizing the second link layer configuration is defined. The property information is transmitted to the correspondent node. At least one setting for communication between the correspondent node and the mobile node is adapted in the correspondent node on the basis of the received property information.Type: GrantFiled: May 18, 2005Date of Patent: February 2, 2010Assignee: Nokia CorporationInventors: Mika Joutsenvirta, Markku Ala-Vannesluoma
-
Publication number: 20100002661Abstract: One embodiment is directed to a system for providing wireless coverage and capacity for a public land mobile network within a building. The system comprises a pico base station comprising multiple transceiver units. The pico base station is installed in the building. The system further comprises a plurality of antennas located within the building. The plurality of antennas are located remotely from the pico base station. The pico base station is communicatively coupled to the public land mobile network. The pico base station is communicatively coupled to the plurality of antennas.Type: ApplicationFiled: February 6, 2009Publication date: January 7, 2010Applicant: ADC TELECOMMUNICATIONS, INC.Inventors: Robert D. Schmidt, Rahul Jain, Mark F. Schutzer, Lance K. Uyehara, Gilad Peleg, John O'Connell, Ilan Vardi