Patent application number | Description | Published |
20090103509 | ENHANCED WIRELESS PACKET DATA COMMUNICATION SYSTEM, METHOD, AND APPARATUS APPLICABLE TO BOTH WIDE AREA NETWORKS AND LOCAL AREA NETWORKS - A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications. | 04-23-2009 |
20130195040 | GEOGRAPHIC LOCATING REMOTE ENDPOINT MONITOR DEVICE, SYSTEM, AND METHODOLOGY THEREOF - A phase-locked loop frequency synthesizer includes an L-state pulse width modulator configured to receive a reference frequency signal and at least one entry from a frequency table, and to output at least one N/N+1 modulus signals corresponding to the at least one entry from the frequency table. The synthesizer includes a divide by N/N+1 controllable modulus divider configured to receive the at least one N/N+1 modulus signals and to divide the output frequency signal by the at least one N/N+1 modulus signals to generate a second reference frequency signal. The synthesizer includes a phase frequency detector configured to receive the reference frequency signal and the second reference frequency signal and to generate an error signal. The synthesizer also includes a filter network configured to receive the error signal and to output a voltage; and a voltage controlled oscillator configured to receive the voltage and to generate the output frequency signal. | 08-01-2013 |
20140320182 | GEOGRAPHIC LOCATING REMOTE ENDPOINT MONITOR DEVICE, SYSTEM, AND METHODOLOGY THEREOF - A phase-locked loop frequency synthesizer includes an L-state pulse width modulator configured to receive a reference frequency signal and at least one entry from a frequency table, and to output at least one N/N+1 modulus signals corresponding to the at least one entry from the frequency table. The synthesizer includes a divide by N/N+1 controllable modulus divider configured to receive the at least one N/N+1 modulus signals and to divide the output frequency signal by the at least one N/N+1 modulus signals to generate a second reference frequency signal. The synthesizer includes a phase frequency detector configured to receive the reference frequency signal and the second reference frequency signal and to generate an error signal. The synthesizer also includes a filter network configured to receive the error signal and to output a voltage; and a voltage controlled oscillator configured to receive the voltage and to generate the output frequency signal. | 10-30-2014 |
Patent application number | Description | Published |
20100227620 | Multi-Hop Load Balancing - A base station in a wireless communications system defines a plurality of beams which each have an amount of resources for supporting communication links with terminals. A control entity determines if a direct communication link can be supported between a new terminal and a base station using a first beam. If a direct communication link cannot be supported, a relaying equipment is used to provide a multi-hop path between the base station and the terminal. The multi-hop path comprises a link between the base station and the relaying equipment using resources of a different beam. This helps to redistribute load within the cell. The direct communication link can be refused if there are insufficient resources in the first beam, or if accepting the new terminal would cause quality of communication links with existing terminals to deteriorate. | 09-09-2010 |
20100246475 | FRAME STRUCTURE FOR A MULTI-HOP WIRELESS SYSTEM - A wireless network includes a base station which can serve terminals directly, or via multi-hop transmission paths via relay stations. The base station transmits a downlink sub-frame which includes a first set of frame control information and a second set of frame control information. The second set of frame control information occupies a different position within the downlink sub-frame compared to the first set of frame control information. A relay station is able to transmit a downlink sub-frame to a terminal, or another relay station, while still being able to receive a set of frame control at a different time during the downlink sub-frame. The invention is especially useful in a wireless network in which the downlink transmissions of a base station and a relay station are synchronised to one another and where the downlink transmissions of a base station and relay station occupy the same, or similar, frequency bearer. | 09-30-2010 |
20120202416 | Multi-Hop Load Balancing - A base station in a wireless communications system defines a plurality of beams which each have an amount of resources for supporting communication links with terminals. A control entity determines if a direct communication link can be supported between a new terminal and a base station using a first beam. If a direct communication link cannot be supported, a relaying equipment is used to provide a multi-hop path between the base station and the terminal. The multi-hop path comprises a link between the base station and the relaying equipment using resources of a different beam. This helps to redistribute load within the cell. The direct communication link can be refused if there are insufficient resources in the first beam, or if accepting the new terminal would cause quality of communication links with existing terminals to deteriorate. | 08-09-2012 |
20130064076 | MULTI-HOP WIRELESS BACKHAUL NETWORK AND METHOD - Some embodiments of the invention provide an implementation for a multi-hop wireless backhaul network. These embodiments can advantageously be deployed in dense urban areas and/or co-located with wireless access nodes, such as base-stations of a cellular wireless communication system. Preferably wireless links between constituent network nodes are set-up hierarchically. A basic result of this is that peer-to-peer (child-to-child) communication is generally prohibited and circuits are forced to conform to a topology. The multi-hop wireless backhaul network may be used to carry delay sensitive, high-density last mile circuit traffic over Non-Line-Of-Sight (NLOS) broadband radio links. Moreover, some embodiments of the invention provide a method of path-healing for re-routing of circuit traffic from circuits that have experienced catastrophic failures. | 03-14-2013 |
Patent application number | Description | Published |
20100035620 | WIRELESS SYSTEM - The capacity of a cellular wireless system is increased by operation of base stations or base station sectors arranged to re-use radio resource elements that are used by neighbouring base stations or base station sectors, in conjunction with operation of relay stations, which are similarly arranged to re-use radio resource elements used by neighbouring relay stations, and where the radio resource elements re-used by the relay stations are different to those used by the base stations. The relay stations provide coverage, particularly in the areas at the boundaries between the areas of coverage of base stations that suffer from interference between signals transmitted from the respective base stations. In addition, the relay stations generally increase the average available carrier to interference ratio compared with a system in which base stations alone are deployed. The scheme for the allocation of radio resource elements ensures in particular that interference is avoided between signals transmitted from a base station and signals transmitted from a relay station in radio resource elements allocated to control data. | 02-11-2010 |
20100067476 | MULTI-HOP WIRELESS BACKHAUL NETWORK AND METHOD - Some embodiments of the invention provide an implementation for a multi-hop wireless backhaul network. These embodiments can advantageously be deployed in dense urban areas and/or co-located with wireless access nodes, such as base-stations of a cellular wireless communication system. Preferably wireless links between constituent network nodes are set-up hierarchically. A basic result of this is that peer-to-peer (child-to-child) communication is generally prohibited and circuits are forced to conform to a topology. The multi-hop wireless backhaul network may be used to carry delay sensitive, high-density last mile circuit traffic over Non-Line-Of-Sight (NLOS) broadband radio links. Moreover, some embodiments of the invention provide a method of path-healing for re-routing of circuit traffic from circuits that have experienced catastrophic failures. | 03-18-2010 |
20100074105 | MULTI-HOP WIRELESS BACKHAUL NETWORK AND METHOD - Some embodiments of the invention provide an implementation for a multi-hop wireless backhaul network. These embodiments can advantageously be deployed in dense urban areas and/or co-located with wireless access nodes, such as base-stations of a cellular wireless communication system. Preferably wireless links between constituent network nodes are set-up hierarchically. A basic result of this is that peer-to-peer (child-to-child) communication is generally prohibited and circuits are forced to conform to a topology. The multi-hop wireless backhaul network may be used to carry delay sensitive, high-density last mile circuit traffic over Non-Line-Of-Sight (NLOS) broadband radio links. Moreover, some embodiments of the invention provide a method of path-healing for re-routing of circuit traffic from circuits that have experienced catastrophic failures. | 03-25-2010 |
20100103869 | TRANSFERRING DATA IN A MOBILE TELEPHONY NETWORK - A mobile telephony network comprises base stations operating according to a predetermined standard. A transfer node allows the transfer of data from a first base station to a second base station in the mobile telephone network. Data is sent from the first base station to a data receiver of the data transfer node via a first wireless communications channel complying with the said standard. The received data is transferred via an interface within the transfer node to a data sender of the data transfer node. The data sender sends the transferred data to the second base station via a second wireless communications channel complying with the said standard. The interface within the transfer node does not comply with the operating standard because it transfers data only within the node. Data may be sent from the second base station to the first base station via the node in similar manner. Preferably, the receiver appears to the first base station to be a relay and the sender appears to the second base station to be a user terminal. | 04-29-2010 |
20130107856 | Wireless System | 05-02-2013 |
20130294484 | Space Time Block Code Communications with Co-Operative Relays - Methods, systems and apparatuses are provided for transmitting and receiving space-time block coded data in a wireless communications system with co-operative relays. A source node transmits RF signals representing first and second sets of data symbols in respective first and second channels (in time frequency code or any combination) of a wireless communications system, the first and second sets of data symbols being for transmission from separate antennas respectively according to a space-time block code. A relay node receives the RF signals representing the first set of data symbols in the first channel and transmits RF signals representing the first set of data symbols in the second channel. A destination node received the RF signals representing the second set of data symbols from the source node and the RF signals representing the first set of data symbols from the relay node. This enables decoding of the received RF signals representing the first and second sets of data symbols according to the space-time block code. | 11-07-2013 |
20140334461 | Source Node and Relay Node that Cooperatively Transmit an Alamouti Code - Methods, systems and apparatuses are provided for transmitting and receiving space-time block coded data in a wireless communications system with co-operative relays. A source node transmits RF signals representing first and second sets of data symbols in respective first and second channels (in time frequency code or any combination) of a wireless communications system, the first and second sets of data symbols being for transmission from separate antennas respectively according to a space-time block code. A relay node receives the RF signals representing the first set of data symbols in the first channel and transmits RF signals representing the first set of data symbols in the second channel. A destination node received the RF signals representing the second set of data symbols from the source node and the RF signals representing the first set of data symbols from the relay node. This enables decoding of the received RF signals representing the first and second sets of data symbols according to the space-time block code. | 11-13-2014 |
20150139180 | Frame Structure for Allocating Radio Resources in a Cellular Wireless Network - The capacity of a cellular wireless system is increased by operation of base stations or base station sectors arranged to re-use radio resource elements that are used by neighbouring base stations or base station sectors, in conjunction with operation of relay stations, which are similarly arranged to re-use radio resource elements used by neighbouring relay stations, and where the radio resource elements re-used by the relay stations are different to those used by the base stations. The relay stations provide coverage, particularly in the areas at the boundaries between the areas of coverage of base stations that suffer from interference between signals transmitted from the respective base stations. In addition, the relay stations generally increase the average available carrier to interference ratio compared with a system in which base stations alone are deployed. The scheme for the allocation of radio resource elements ensures in particular that interference is avoided between signals transmitted from a base station and signals transmitted from a relay station in radio resource elements allocated to control data. | 05-21-2015 |
Patent application number | Description | Published |
20140068555 | FAST DISPATCH PREDICATE FOR OVERLOADED FUNCTIONS WITH GENERIC TYPE HIERARCHIES THAT LACK CONTRAVARIANCE - The disclosed embodiments provide a system that facilitates the development and execution of a software program. During runtime of the software program, the system obtains a function call associated with an overloaded function and a generic type hierarchy that lacks contravariance. Next, the system determines an applicability of an implementation of the overloaded function to the function call. Finally, the system selects the implementation for invocation by the function call based on the determined applicability and a partial order of implementations for the overloaded function. | 03-06-2014 |
20140068556 | DISPATCH PREDICATE FOR OVERLOADED FUNCTIONS USING TYPE INTERVALS - The disclosed embodiments provide a system that facilitates the development and execution of a software program. During runtime of the software program, the system obtains a function call associated with an overloaded function and a generic type hierarchy. Next, the system determines an applicability of an implementation of the overloaded function to the function call. Finally, the system selects the implementation for invocation by the function call based on the determined applicability and a partial order of implementations for the overloaded function. | 03-06-2014 |
20140068574 | TYPE INFERENCE OF GENERIC TYPE PARAMETERS IN OVERLOADED FUNCTIONS USING TYPE INTERVALS AND INFERENCE DIRECTIONS - The disclosed embodiments provide a system that facilitates the development and execution of a software program. During operation, the system obtains a type interval for a generic type parameter of an implementation of an overloaded function. Next, the system selects an inference direction for the generic type parameter based on a variance of the generic type parameter, wherein the inference direction is an upward inference direction or a downward inference direction. Finally, the system uses the type interval and the inference direction to perform type inference on the generic type parameter. | 03-06-2014 |