Alvarion Ltd. Patent applications |
Patent application number | Title | Published |
20140241258 | COORDINATED DIGITAL RADIO DISTRIBUTION ARCHITECTURE - A communication system architecture is provided, having an aggregator, arranged to centralize the access units and coordinate the radio signals of access units of different types digitally, and remote radio units configured to be modularly connectable to different types of radio elements that correspond to the access units and arranged to communicate with the aggregator digitally. Radio signals are scheduled and delivered with respect to the types of the access units and of the radio elements, and the aggregator is further arranged to handle distribution and combining of the radio signals digitally. The aggregator further comprises a controller arranged to continuously optimize communication with respect to the access units and user mobile communication devices by applying a decision process to cost functions that depends on communication parameters to derive specified dynamically changing parameters, and to manage the aggregator dynamically with respect thereto. | 08-28-2014 |
20140241185 | ASSIGNING DYNAMIC GAIN FACTORS TO COORDINATE DISTRIBUTED RADIO UNITS - A way of optimizing communication by minimizing the momentary overall radiated energy under constraints in respect to coverage and maintenance of communication with the users, is provided herein. Channel parameters are estimated from downlink and/or uplink communications or from user equipment messages and desirable gain factors are derived from the minimization. The optimization is reiterated continuously to dynamically adapt the communication system to varying conditions. | 08-28-2014 |
20140233548 | METHOD AND SYSTEM FOR MANAGING A WIRELESS NETWORK COMPRISING A DISTRIBUTED ANTENNA SYSTEM (DAS) - A method and a system are provided for reducing collisions created between endpoints in a wireless local area network environment incorporated with a distributed antenna system (DAS), wherein the DAS comprises a plurality of station units (STUs) each adapted to communicate wirelessly with one or more wireless stations, and at least one access point unit (APU) connected to the plurality of STUs and adapted to communicate with a respective access point. The method comprises: at a first STU belonging to the plurality of STUs, receiving a first signal transmitted wirelessly; conveying the first signal towards the APU; and at the APU, adapting the conveyed signal to be transmitted to the access point associated with the APU, and in response to receiving the first signal, conveying a return signal towards at least two STUs belonging to the plurality of STUs. | 08-21-2014 |
20130320775 | System For Coupling A Power Line Communication Device To A Power Line Network - Coupling circuit for coupling a power line communication device to a power line network, including a first network port coupled between a network phase line and a first network line, a second network port coupled between a network neutral line and a second network line, a third network port coupled between a network ground line and a third network line, a first differential modem port including a first terminal and a second terminal, a second differential modem port including a third terminal and a fourth terminal, a first transformer including a first network side winding and a first modem side winding, a second transformer including a second network side winding and a second modem side winding, the transformers including respective terminals, a center tap extending from the midpoint of the first network side winding to a terminal of the second network side winding and a plurality of capacitors. | 12-05-2013 |
20130142185 | METHOD AND SYSTEM FOR AFFECTING POWER CONTROL IN A WIRELESS NETWORK - A method device and system are provided for managing a wireless local area network comprising a plurality of station units (STAs), where each of the plurality of station units is adapted to wirelessly communicate with one or more access points. The method device and system comprises affecting power control over air time request packets transmitted by respective station units from among the plurality of STAs towards one of the one or more access points, so that all air time request packets are received at said access point at substantially the same Signal to Noise Ratio (“SNR”), and wherein said power control does not affect packets carrying payload data that proceeds the air time request packets transmitted by the respective station units. | 06-06-2013 |
20130003618 | RESOURCE ALLOCATION IN A RADIO COMMUNICATION SYSTEM - A method of using resource blocks in a communication system with a plurality of Base Stations (BSs), including assigning resource blocks to a first BS, the first BS communicating to a second BS a message comprising information about at least one resource block assigned to the first BS and not planned to be used by the first BS, and the second BS receiving the message. Optionally, the second BS using the at least one resource block. Related apparatus and methods are also described. | 01-03-2013 |
20120257599 | TRANSFER OF COMMUNICATION SESSIONS BETWEEN BASE STATIONS IN WIRELESS NETWORKS - A method for carrying out a handover procedure, following which a mobile terminal (MS) currently in communication with a first base station (BS), will communicate via a second BS. The method includes upon initiating a handover procedure, determining that the MS will receive all future IP packets via the second base station, following this determination and prior to establishing a connection between the MS and the second BS, forwarding all IP packets being addressed to the MS to the second BS, and buffering the received IP packets thereat, and upon establishing a connection between the MS and the second BS, forwarding the IP packets that were buffered at the second BS to the MS, wherein the buffered IP packets are delivered to the MS before delivering any packets addressed thereto along a new path extending to the second BS which does not include the first BS. | 10-11-2012 |
20120066724 | METHOD AND APPARATUS FOR PROVIDING WIRELESS SIGNALS OVER CATV, DBS, PON INFRASTRUCTURE - A method and apparatus for providing wireless coverage such as WiMAX or LTE coverage via a wired network are provided. For example, systems and methods are discussed in which a Cable TV (“CATV”) network, Direct Broadcasting Satellite (“DBS”) and/or Passive Optical Network (PON) are used in order to deliver the native wireless signals into the buildings or an area in which wireless coverage is desired, where a small Consumer Premise Device is used to transmit and receive the signals to and from the wireless devices. | 03-15-2012 |
20120028648 | LOAD BALANCING IN WIRELESS NETWORKS - A load balancing system for a wireless network comprises: a base station parameter extraction unit able to extract base station availability parameters of currently available base stations; and a base station quality of service selector associated with said base station parameter extraction unit configured to determine from said parameters which of said available base stations is able to provide a currently required quality of service. The system requests resources from one such base station, thereby to ensure that mobile stations are distributed in a balanced manner between the available base stations. As well as quality of service, interference with other links may be taken into account, and uplinks and downlinks may be considered separately. | 02-02-2012 |
20110280172 | METHOD FOR TRANSMITTING MULTI UNICAST INFORMATION WITHIN BROADCASTED INFORMATION - A method and apparatus are provided for transmitting a communication frame by a base station which comprises broadcasted information intended for a plurality of subscriber stations (AMSs), wherein that information is broadcasted by using more than one Modulation and Coding Scheme (MCS). The method comprises the steps of: a) receiving bandwidth requests' indications from the plurality of AMSs; b) based on these indications, identifying more than one decoding capabilities, wherein each of the identified decoding capabilities is associated with at least one of the plurality of AMSs; c) preparing a Bandwidth Request Acknowledgement Media Access Protocol Information Element (BR-ACK MAP-IE) message in response to the bandwidth requests' indications received; and d) transmitting a communication frame which comprises at least two copies of the BR-ACK MAP-IE message, wherein the number of the copies corresponds to the number of different decoding capabilities identified, and wherein each of the copies is transmitted at an MCS that corresponds to a respective decoding capability that has been identified. | 11-17-2011 |
20110273244 | VARIABLE PHASE SHIFTER - A variable phase shifter comprising a coupler including an input port, an output port, a through port and a coupled port and two conducting finite strips exhibiting equal lengths, the first conducting strip being movably coupled with the section of the coupler connecting the input port with the through port and the second conducting strip being movably coupled with the section of the coupler connecting the output port and with the coupled port, wherein displacing the conducting strip relative to the coupler, changes the phase of an output signal from the coupler, relative to the phase of a corresponding input signal into the coupler. | 11-10-2011 |
20110243050 | METHOD AND APPARATUS FOR POWER SAVING IN WIRELESS SYSTEMS - A method is provided for carrying out a power saving procedure in a wireless subscriber terminal which is operative to receive at least two different services, each of which is characterized by one or more characteristics related to traffic demands associated with that service. The method comprises the following steps: classifying each of the at least two different services based on their traffic demand related characteristics into corresponding power saving classes, where there are at least two different power saving classes associated with the at least two different services; for each of the power saving classes, determining required listening windows and required sleep windows; exchanging messages between the base station and the subscriber's device for synchronizing parameters for carrying out the power saving procedure. | 10-06-2011 |
20110170460 | APPARATUS AND SYSTEM FOR USING RELAY STATION IN A TDD WIRELESS NETWORK - A Relay Station (RS) is provided. The RS is adapted to operate in a TDD type of wireless communication network which comprises at least one base station (BS) operative to communicate with the RS and with an IP network, and a plurality of Mobile Subscribers (MSs). The RS comprises: a subscriber terminal operative in conformity with IEEE 802.16e Standard; and a BS operative in conformity with said IEEE 802.16e Standard, and wherein that subscriber terminal and that BS that belong to the RS are connected to each other, and wherein all communications transmitted from the at least one BS to the RS are in conformity with the IEEE 802.16e Standard. | 07-14-2011 |
20110158203 | PROPORTIONAL FAIR SCHEDULING WITH PACKET TRANSMISSION - A scheduler for transmission of Packetized data over a transmission link between a base station device and various terminal devices, each packet being associated with one terminal device, and the packets being of variable length. The scheduler calculates for each terminal device a proportional fair allocation metric, assigns a next available channel transmission resource to a device having a best metric, but only actually sends a next packet to a respective terminal device provided that respectively allocated and as yet unused channel transmission resources are sufficient to accommodate the next packet. Thus the packets are sent unfragmented and based on a proportional fair resource allocation. | 06-30-2011 |
20110158193 | METHOD AND APPARATUS FOR TRANSMITTING WIRELESS COMMUNICATIONS - A method and apparatus are provided for use in a wireless communications system to enable dynamic selection of k sub-MAPs, and rates for transmitting these k sub-MAPs within communication frames. The method comprises the steps: a) for at least one communication frame comprised within a first interval of time, retrieving information on statistical distribution of downlink (DL) channel rates for a group of subscriber devices; b) based on that information, selecting k and corresponding transmission rates for k sub-MAPs, to minimize total amount of resources to be allocated for MAP and sub-MAPs transmission within that communication frame comprised within the first time interval and/or within a second interval of time that proceeds the first interval of time; and c) transmitting the k sub-MAPs at the selected corresponding transmission rates in communication frames comprised within the first time interval and/or within the second interval of time that proceeds the first one. | 06-30-2011 |
20110158182 | METHOD AND SYSTEM OF PACKET SCHEDULING - A method of operating a communication system having a plurality of data channels for downlink transmission from a base station to a plurality of subscriber stations. The method comprises receiving, at a base station, an inflow having a plurality of packets of a plurality of connections, each the connection being with one of a plurality of subscriber stations, regulating the inflow according to a throughput rate, setting a deadline to each the packet in the regulated inflow as a function of its reception time, and scheduling a transmission of the plurality of packets to the plurality of subscriber stations according to their deadlines so as to guarantee substantially the throughput rate for each one of the plurality of connections. | 06-30-2011 |
20110149825 | METHOD FOR BROADCASTING/MULTICASTING TRANSMISSIONS IN WIRELESS NETWORKS - In a wireless communications network comprising a plurality of multicast and broadcast service (MBS) zones each of which comprises at least one base station, there is provided a method for providing a multicast and broadcast service to a mobile terminal capable of moving from one MBS zone to another. The method comprises the steps of: providing the mobile terminal with one or more multicasting/broadcasting transmissions comprising at least one multicast connection identification (MCID) associated with an MBS zone other than a current MBS zone at which the mobile terminal is currently receiving the one or more multicasting/broadcasting transmissions; retrieving information regarding the at least one MCID; and upon detecting that the mobile terminal is capable of receiving transmissions associated with the other MBS_ZONE, utilizing the MCID associated with that other MBS_ZONE to receive multicasting/broadcasting transmissions intended for that mobile terminal. | 06-23-2011 |
20110138448 | METHOD AND APPARATUS FOR ENABLING MOBILITY IN MOBILE IP BASED WIRELESS COMMUNICATION SYSTEMS - A method is provided for providing secured mobile IP services to a mobile terminal which is currently associated with an access network different from its own home access network. The method is characterized by creating a virtual mobile node at an access network server of the current access network, which communicates with a Home Agent associated with the terminal's home mobile network and with one or more access points associated with the current access network, at which the mobile terminal is currently located. | 06-09-2011 |
20110116379 | METHOD AND DEVICE FOR SYNCHRONIZATION IN WIRELESS NETWORKS - A method and device are provided for synchronizing data transmission of multicasting/broadcasting services (MBS) by a plurality of Base Stations. The method disclosed includes providing synchronization information to enable the plurality of Base Stations to start transmitting MBS data at a synchronized starting time point. Meanwhile, each of the Base Stations receives the MBS data to be transmitted and determines whether any of the MBS data has not been properly received. If so, the respective Base Station may initiate a process to recover the missing MBS data and/or to obtain information regarding the missing data to determine the duration of the time period that would have been required for transmitting the missing MBS. If the missing data has not been timely recovered, the respective Base Station determines a starting point and the duration of a silence period based on the information obtained, and refrains from transmitting signals along a communication channel allocated for transmission of MBS data, during that silence period. | 05-19-2011 |
20110111783 | FRACTIONAL FREQUENCY REUSE DEPLOYMENT METHOD FOR WIRELESS SYSTEM - A wireless communications system is described, which comprises a plurality of base stations and a plurality of subscriber devices. Each of the base stations comprises at least one antenna for communicating with respective subscriber devices currently located within a geographical area of a wireless cell served by a respective base station, and wherein: the geographical area of the wireless cell comprises a geographical central area and a geographical edge area; more than a third of all transmission resources available to the serving base station are available for communicating with the subscriber devices located within the geographical edge area of the wireless cell; and at least one of the transmission resources available for communicating with each of the subscriber devices currently located within the geographical edge area of the wireless cell is other than any of the transmission resources available for communicating with subscriber devices currently located within geographical edge areas of wireless cells each having a geographical edge area that is geographically adjacent to the geographical edge area of the wireless cell at which the subscriber device is located. | 05-12-2011 |
20110002275 | RESOURCE ALLOCATION IN A RADIO COMMUNICATION SYSTEM - A method of using resource blocks in a communication system with a plurality of Base Stations (BSs), including assigning resource blocks to a first BS, the first BS communicating to a second BS a message comprising information about at least one resource block assigned to the first BS and not planned to be used by the first BS, and the second BS receiving the message. Optionally, the second BS using the at least one resource block. Related apparatus and methods are also described. | 01-06-2011 |
20100321233 | METHOD FOR CALIBRATING ANTENNA ARRAYS - A method is provided for use in calibrating a plurality of antennas comprised in an antenna array and wherein the antenna array comprises at least one gain control circuitry. The method comprises: transmitting one or more pre-defined signals by at least one antenna comprised in the antenna array; receiving at one or more of the antennas comprised in the antenna array, a signal derived from a corresponding pre-defined signal transmitted by the at least one antenna; and for each of the one or more antennas, detecting whether there is any difference between the corresponding one or more pre-defined signals transmitted thereto and the respective one or more signals received thereat, and if in the affirmative, applying the detected differences in a process of calibrating the one or more antennas comprised in the antenna array, and wherein the process of calibrating the one or more antennas comprised in the antenna array comprises a step of estimating a ratio of complex transmission coefficients for at least two states of the at least one gain control circuitry. | 12-23-2010 |
20100316010 | METHOD FOR TRANSMITTING COMMUNICATIONS IN A WIRELESS NETWORK USING DIFFERENT RE-USE SCHEMES - A method is provided for transmitting combined frequency reuse communications in a wireless network. The communications are transmitted along sub-channels associated with given frequency channel partitions. At least one of the combined frequency reuse frames comprises at least one sub-channel operative according to a first reuse scheme and at least one other sub-channel operative according to another reuse scheme. Preferably, the transmission power level for conveying communications along at least one sub-channel assigned in each of the sectors according to the first reuse scheme, is substantially equal to that used in all other sectors, the transmission power level of another sub-channel operative according to another reuse scheme is higher than a first threshold in at least one of the sectors and the transmission power level in at least one other of the sectors is lower than the first threshold but higher than a second threshold. | 12-16-2010 |
20100302969 | METHOD AND SYSTEM OF INTERFERER SIGNAL DETECTION - A method for detecting an interferer signal in a duplex communication channel. The method comprises establishing a duplex communication channel for transmitting and receiving a signal having a plurality of frames each comprising an uplink (UL) and a downlink (DL) sub frames, allocating a plurality of silent slots in at least on of the UL and DL sub frames of at least some of the plurality of frames, intercepting at least one transmission signal during the plurality of silent slots, and detecting at least one interferer signal according to the at least one transmission signal. | 12-02-2010 |
20100248738 | LOAD BALANCING IN WIRELESS NETWORKS - A load balancing system for a wireless network comprises: a base station parameter extraction unit able to extract base station availability parameters of currently available base stations; and a base station quality of service selector associated with said base station parameter extraction unit configured to determine from said parameters which of said available base stations is able to provide a currently required quality of service. The system requests resources from one such base station, thereby to ensure that mobile stations are distributed in a balanced manner between the available base stations. As well as quality of service, interference with other links may be taken into account, and uplinks and downlinks may be considered separately. | 09-30-2010 |
20100246490 | METHOD FOR HANDLING CORRUPTED SIGNALS IN A WIRELESS NETWORK - A method is provided for combining corrupted messages received in a wireless network which comprises the following steps: (a) receiving a first message transmitted from one of a plurality of communication devices, wherein that first message is received as a corrupted message; (b) following the receipt of the first corrupted message, receiving a first plurality of messages, wherein the first plurality of messages are received as corrupted messages and wherein at least one of the first plurality of corrupted messages is essentially identical to the first message; (c) combining the first corrupted message with the at least one of the first plurality of corrupted messages that is essentially identical to that first message to form a combined message; and (d) deriving from the combined message information which was transmitted within the first message. | 09-30-2010 |
20100157925 | Mode selection for MIMO in wireless communication - A method for transmission mode selection in a MIMO radio system between a spatial diversity (A-matrix) mode and a spatial multiplexing (B-matrix) mode comprises: obtaining a channel condition number; if the channel condition number is above a selected threshold, and a signal to interference plus noise ratio exceeds a predetermined threshold then selecting spatial multiplexing; and otherwise selecting spatial diversity. | 06-24-2010 |
20100150124 | METHOD FOR COMMUNICATION IN A WIRELESS NETWORK COMPRISING A LOCAL AREA NETWORK - A method is provided for use by a subscriber device associated with a LAN comprised in a wireless network, to enable provisioning of services to another subscriber device associated with that LAN. The method comprises the steps of: (i) at the first subscriber device, receiving an outgoing packet generated by the other subscriber device associated, wherein that outgoing packet has been tagged with a VLAN label; (ii) forwarding the outgoing packet towards an address being a source MAC address the subscriber device; (iii) associating a DSCP value with the outgoing packet; (iv) removing VLAN label and Ethernet MAC layer from the outgoing packet and forwarding the remaining IP packet to a MAC convergence sub-layer; (v) at the MAC convergence sub-layer, forwarding the outgoing packet to a service flow determined by using a DSCP value associated with the outgoing packet; and forwarding the outgoing packet along an air-link service flow connection that corresponds to the respective DSCP associated with the outgoing packet. | 06-17-2010 |
20100087227 | WIRELESS BASE STATION DESIGN - A multi-transmitter base station for wireless digital communication, having beam forming and digital pre-distortion capabilities, including a shared feedback unit for providing feedback of outgoing Radio Frequency (RF) signals for calibrating a plurality of antennas and for adapting the digital pre-distortion. Related apparatus and methods are also described. | 04-08-2010 |
20100075687 | METHOD AND SYSTEM FOR ALLOCATING WIRELESS TRANSMISSION RESOURCES - A wireless communications system is described which comprises a plurality of base stations, each comprises at least one beam generating means for generating narrow spatial beams for communicating with respective subscriber devices located along a direction to which the respective narrow beam is currently directed. The system's transmission resources are allocated so that a substantial part of the resources allocated to each of the beam generating means is different from a substantial part of transmission resources allocated to any of the angularly adjacent beam generating means at the respective base station and are different from the substantial part of the resources allocated to beam generating means associated with adjacent base stations and directed towards geographical areas located in a proximity to the geographical area towards which the respective narrow beam is directed. | 03-25-2010 |
20100067592 | OFDMA-BASED OPERATION OF A WIRELESS SUBSCRIBER TERMINAL IN A PLURALITY OF CELLS - A method for carrying out concurrent communications between a subscriber device and two base stations is disclosed. At least one OFDM/OFDMA sub-channel is selected for each of the two base stations which is associated with a communications sector belonging to one of the two base stations and comprises OFDM/OFDMA sub-carriers that are substantially different from sub-carries comprised in the OFDM/OFDMA sub-channel associated with a communications sector belonging to the other base station; establishing a communication path between the subscriber device and each of the two base stations along the respective sub-channel selected; receiving/transmitting control messages exchanged between the subscriber device and the two base stations, wherein at least one control message is exchanged between the subscriber device and one of the two base stations concurrently with at least one control message exchanged between the subscriber device and the other base station, and wherein the control messages are exchanged along different sub-channels comprised in the communication paths. | 03-18-2010 |
20100062757 | SWITCHING ANTENNAS IN A WIRELESS DEVICE - A method for configuring a terminal in a wireless system comprising at least one terminal and at least one base station, comprising:
| 03-11-2010 |
20100029222 | DELAY DIVERSITY IN ANTENNA ARRAYS - In a wireless transmission system including a transmit delay module, delaying each of at least one copy of a signal by a respective delay, the signal being transmitted over a plurality of carrier frequencies and over at least one beam, the at least one beam exhibiting a beam pattern, the number of copies of the signal corresponding to the number of beams, each the at least one copy being associated with a respective one of the at least one beam, the system further including a beam pattern former, coupled with the transmit delay module, producing a plurality of transmit signals corresponding to the beam pattern, a frequency dependent beam shifter, coupled with the beam pattern former, delaying each of the at least one transmit signal by a respective angular shift delay, thereby applying an angular shift to each of the at least one beam, the angular shift of each of the at least one beam corresponding to at least a respective one of the carrier frequencies, wherein each beam is transmitted with a delay corresponding to the transmit delay of each the copy. | 02-04-2010 |
20100027491 | UPLINK RESOURCE CONTROL - Apparatus for interference budgeting at base stations of a wireless network wherein mobile units communicate with a current base station but may cause interference to neighboring base stations, comprises: an extraction unit for extracting, from signals received at said current base station in relation to respective mobile units, an interference indication; and an uplink management unit for controlling the uplink to mobile units, wherein said management unit is connected to said extraction unit to obtain respective interference indications, thereby to use said respective interference indications as constraints when allocating said uplink resources. The resource may be uplink power or an uplink frequency channel that is allocated to different mobile stations and/or it may be interference budget that is allocated between base stations. | 02-04-2010 |
20100002608 | METHOD FOR IMPROVING COEXISTENCE BETWEEN ADJACENT TDD AND FDD WIRELESS NETWORKS - A method is provided for reducing interference between FDD and a TDD interfering radio networks. For each of the networks, identifying respective radio entities of a pre-defined type for which the interferences should be reduced; defining a time pattern composed of time slots on each of the interfered FDD and TDD frequency channels, that comprises receive time intervals for radio entities of the pre-defined types that are likely to be interfered; aligning the time patterns so that receive time intervals for the radio entities that are potentially exposed to interferences, overlap each other; defining at least two types of time intervals within the time pattern on each frequency channel, wherein a first type of time intervals enables receiving communications with substantially reduced interference and a second type of time intervals for exchanging communications without mitigating interferences induced by radio entities transmitting during that time intervals. The radio entity that might create interference to the radio entity of the pre-defined type of the other network, is prevented from transmitting communications that might create e substantial interference to the radio entity associated with the other radio network, and communications transmitted to some of radio entities of the pre-defined types that might experience interference are scheduled at intervals of the first type. | 01-07-2010 |
20090252203 | WIRELESS COMMUNICATIONS NETWORK COMPRISING MULTI-HOP RELAY STATIONS - A method is provided for conveying wireless communications in a radio network using OFDMA or multi-carrier technologies. The wireless network comprises a first relay station and a subscriber station that is operative to communicate with that first relay station. The first relay station is operative to simultaneously transmit to or receive communications from at least two recipients along a shared frequency channel. The two recipients are wireless network entities selected from among: the base station and a subscriber station; or another relay station and a subscriber station; or the base station and another relay station. According to an embodiment of the invention the wireless communications network further comprises a second relay station, which is operative to simultaneously transmit to or receive communications from at least two recipients along a shared frequency channel. The two recipients are wireless network entities selected from among: the first relay station and a subscriber stations, or a third relay station and a subscriber station, or the first relay station and a third relay station, wherein a third relay station is a relay station that does not exchange communications directly with either the base station nor the first relay station. | 10-08-2009 |
20090232092 | METHOD AND APPARATUS FOR IMPROVING TRANSMISSION RELIABILITY IN WIRELESS COMMUNICATIONS NETWORK - There is provided a method and apparatus for allocating transmission resources in a wireless network in which some of the terminals communicate with the base station by exchanging communication frames that are compatible with a first communication protocol while other terminals receive communications from the base station that are compatible with a second communication protocol by using non-standardized communication frames or communication frames that are compatible with another standardized protocol. The base station transmits a plurality of frames, some of which are compatible with the first communication protocol while others—with the second communication protocol. The terminals that are operative to receive frames of the second communication protocol are capable of decoding frames that are compatible with both communication protocols, whereas terminals that are operative to receive frames of the first communication protocol are capable of decoding only standardized communication frames of the first communication protocol. | 09-17-2009 |
20090213810 | TRANSFER OF COMMUNICATION SESSIONS BETWEEN BASE STATIONS IN WIRELESS NETWORKS - A method and devices are provided to enable continuing a communication session currently carried by a mobile subscriber station (MSS) while switching from a first base station to a second base station. During the communication session that is being held with the MSS, a first IP datagram is determined from among a plurality of IP datagrams associated with that communication session and received at a network gateway adapted to convey IP traffic received from the MSS. Following that determination, IP datagrams that will be received at that network gateway after that first IP datagram and which are addressed to the MSS are backed up. Upon establishing a connection between the MSS and the second base station, the first base station ceases to convey uplink traffic originated by the MSS, the IP datagrams that were backed up are forwarded to the MSS, and all further IP datagrams which are addressed to the MSS and received at that network gateway after establishing the connection between the MSS and the second base station, will be forwarded to the MSS through the second base station. | 08-27-2009 |
20090103492 | WIRELESS COMMUNICATIONS NETWORK BASE STATION EXTENSION - Apparatus and methods to permit the deployment of wireless base stations, where a deployed remote base station is backhauled to the core network over a wireless connection to an operatively attached donor base station using protocols that encapsulate backhaul communications within standard subscriber communication protocols. | 04-23-2009 |
20090073920 | METHOD AND DEVICE FOR INCORPORATING DIFFERENT PHY MODE WIRELESS COMMUNICATIONS - In a wireless communications network comprising at least two subscriber terminals each operative to communicate with the same base station using a different PHY mode transmissions than the other, a method and apparatus for allowing communications with these subscriber terminals along a single frequency communication channel is provided. The communication is carried by defining common radio transmission frames in which each of the at least two PHY modes communications is carried out while occupying a different part of the common radio transmission frames. Preferably, at least one of the PHY modes is in compliance with IEEE 802.16 Standard. | 03-19-2009 |
20090042553 | METHOD AND APPARATUS FOR SYNCHRONIZING CHANGES IN POWER SAVING PROCEDURES - A method and devices are provided for use in a wireless communications network for affecting changes in a power saving class (PSC) associated with a subscriber terminal. The method comprises the steps of: providing at least one PSC for use by said subscriber terminal; at each of said subscriber terminal and said corresponding base station, setting a counting value for said at least one PSCs to be equal to a pre-defined initial value; and upon transmitting or receiving at either one of said subscriber terminal and said base station a message identifying a change in said at least one PSC, updating operating parameters associated with said at least one PSC and increasing at the respective subscriber terminal or base station, the counting value of the corresponding one or more of said at least one PSC by a pre-determined value. Preferably, the method further comprises transmitting a message which comprises a request to affect a change in power saving status of said subscriber terminal, wherein the message comprises an indication of the counting value associated with a PSC currently available at the side transmitting said message; and upon receiving the message comprising the request to affect a change in the power saving status, determining whether the counting value comprised in the message matches the counting value at the side transmitting that message, and if in the affirmative, evaluating whether the requested change may be carried out. | 02-12-2009 |
20090040974 | COMBINING TRANSMISSIONS OF DIFFERENT PROTOCOLS IN A WIRELESS COMMUNICATIONS - A method and devices for allowing communications between a central station and subscriber terminals along a frequency channel in a wireless network comprising a central station and a plurality of subscriber terminals, out of which at least one uses a scheduled based protocol. The method comprises: providing a plurality of time domain frames each comprising at least one first time interval for implementing schedule based protocol, and at least one second time interval for implementing a contention based protocol; scheduling a plurality of unconditioned transmissions in a plurality of present and/or future frames during the first time interval of corresponding time domain frames to/from the subscriber terminal(s) operating under the schedule based protocol; scheduling a plurality of conditioned transmission opportunities in a plurality of present and/or future frames during the second time interval of corresponding time domain frames to/from the terminals operating under the schedule based protocol; determining, prior to sending a conditioned transmission, whether the value of received power level is below a pre-defined threshold value and transmitting communications during the second time interval upon determining that this value does not exceed a pre-defined threshold. | 02-12-2009 |
20090034459 | METHOD AND DEVICE FOR SYNCHRONIZATION IN WIRELESS NETWORKS - A method and device are provided for synchronizing data transmission of multicasting/broadcasting services (MBS) by a plurality of Base Stations. The method disclosed comprises providing synchronization information to enable all of said plurality of Base Stations to start transmitting MBS data at a synchronized starting time point. Meanwhile, each of the Base Stations receives the MBS data to be transmitted and determines whether any of the MBS data has not been properly received. If so, the respective Base Station initiates a process to recover the missing MBS data or to obtain within a pre-determined time interval, information regarding the missing data in order to determine the duration of the time period that would have been required for the transmission of the missing MBS. If the missing data has not been timely recovered, the respective Base Station determines a starting point and the duration of a silence period based on the information obtained, and refrains from transmitting any signals along a communication channel allocated for transmission of MBS data, during that silence period. | 02-05-2009 |
20080316992 | PROVISIONING OF NON REAL TIME SERVICES IN WIRELESS NETWORKS - A method is described for the provisioning of latency-tolerant services in an access network. The method comprises the steps of: setting a demand to provide a service to a user; determining the network resources required to provide this service; establishing based upon the resources required to provide that service, the available network resources and/or the network's service provisioning policy, whether the provisioning of this service shall be immediately effected or be postponed to a later stage. If it has been established that the service will be provided at a later stage, it will be provided at a time when the available resources and/or the network's service provisioning policy match that of the resources required for the provisioning of the service. | 12-25-2008 |
20080311941 | METHOD AND DEVICES FOR BANDWIDTH ALLOCATION IN A WIRELESS COMMUNICATIONS SYSTEM - A method is provided by the present invention for allocating channel resources in a wireless network. The method comprises: a) transmitting at least one message which comprises information that would allow association of at least one service flow for conveying data from/to a subscriber terminal, with at least one group of service flows; b) transmitting from a base station messages adapted to provide information which relate to the allocation of resources of a channel along which data will be transmitted to/from said subscriber terminal via one or more service flows associated with that at least one group of service flows, and wherein the information comprises an identification of the at least one group of service flows; and c) transmitting data from/to the subscriber terminal in accordance with the allocation of the channel resources for the at least one group of service flows. | 12-18-2008 |
20080291831 | Dynamic Management of Wireless Transmissions - There is provided a method and devices for dynamically controlling transmission of communications in a wireless network, which comprises a managing entity and a managed entity that communicate which each other. The managed entity transmits updating information that includes indications of current resources available thereat and/or indications that relate to the reception of communications transmitted by the managing entity. A reporting rate for transmitting the updating information by the managed entity to the managing entity is then determined, and based on the reporting rate that has been determined—modifying, if required, parameters associated with the wireless link extending between the two entities so as to affect changes in the operating conditions at one or both of these entities. | 11-27-2008 |
20080279150 | METHOD FOR HANDOVER IN WIRELESS COMMUNICATIONS NETWORK COMPRISING A NUMBER OF SUB-NETWORKS - The present invention discloses a method for carrying out a handover process in a wireless network, wherein the wireless network comprises at least a first and a second base stations belonging each to a different subnet associated of that wireless network and communicating through a first and a second gateways or foreign agents, respectively, and wherein the first base station is used as a serving base station currently in communication with at least one mobile subscriber station (MS). The method provided comprises a step of determining a traffic conveying entity as an intermediate anchoring point, and when the MS moves to a second subnet which comprises the second base station, a path is established for conveying traffic to/from that MS from/to a remote destination. The path comprises the intermediate anchoring point and the first gateway (or the first foreign agent). | 11-13-2008 |
20080273515 | WIRELESS COMMUNICATIONS IN A MULTI-SECTOR NETWORK - In a wireless network employing Spatial Division Multiplexing Access (“SDMA”) in at least one of its cells, a method is provided for dynamically allocating transmission resources to different subscriber devices. The method comprises the steps of: providing at least one base station comprising at least one antenna array; providing one or more sectors associated with that wireless communications network; dynamically dividing one or more of the sectors into a plurality of virtual sub-sectors, each allowing communications between the base station and at least one respective subscriber; from among the plurality of the virtual sub-sectors, selecting at least one pair of subscriber devices wherein each of the pair of subscriber devices is not interfered substantially by transmissions directed to the other subscriber of that pair; for each of the divided sectors, generating plurality of time frequency allocation maps; transmitting the generated maps to all virtual sub-sectors associated with the respective sector; and for each of the sectors, beamforming the transmissions to be conveyed to the subscriber devices' pairs, summing them and conveying the summed result towards the array antenna. | 11-06-2008 |