Patent application number | Description | Published |
20090028119 | Method of managing transmission within a wireless communications network - The method includes sending a request for permission to transmit by each ready node in the wireless network. Each ready node is a node of the wireless network ready to transmit, each request identifies a node in the network that is the destination, and each request is sent over a control channel. An iterative process based on priorities determined for the ready nodes is then performed to determine which ready nodes to block from transmission and which ready nodes to clear for transmission. Transmissions are sent over a payload channel from ready nodes in the clear to transmit state. | 01-29-2009 |
20130022035 | Distributed Medium Access Control For Wireless Data Networks - In one embodiment, conflicts are identified by sending and announcement message from the first node to neighboring nodes from among the plurality of second nodes indicating that the first node intends to participate in a first communication with a first terminal during the current frame, and receiving a report message from any conflicting nodes at the first node, each conflicting node being a node from among the neighboring nodes which intends to participate in a different communication. Conflicts are resolved by selecting one of (1) maintaining a state of the first node as a clear state and (2) changing the state of the first node to a blocked state based on the received report messages. The first communication is scheduled for the current time frame, if the state of the first node is the clear state after the resolving conflicts step. | 01-24-2013 |
20130046889 | METHODS AND APPARATUSES FOR SCHEDULING USERS IN WIRELESS NETWORKS - In a method for scheduling a set of active users for transmission in a wireless network, a plurality of scheduling metrics are calculated based on system state information for the wireless network, and the set of active users are scheduled for transmission according to the candidate transmission schedule corresponding to a maximum scheduling metric from among the calculated scheduling metrics. Each of the plurality of scheduling metrics corresponding to a candidate transmission schedule among a plurality of candidate transmission schedules. | 02-21-2013 |
20140086232 | METHODS AND APPARATUSES FOR CHANNEL ESTIMATION IN WIRELESS NETWORKS - In a method for estimating a channel at a receiver in a wireless communications network, the receiver obtains channel model parameters for a received signal based on raw channel estimates for the received signal, where each raw channel estimate corresponds to an antenna at the receiver. The receiver combines, for each of a plurality of contiguous subcarriers in the wireless communications network, the channel model parameters to generate a first plurality of combined channel model parameters. The receiver then chooses a first set of indices corresponding to combined channel model parameters from among the first plurality of combined channel model parameters having magnitudes passing a combined channel model parameter threshold. The receiver then estimates the channel in a sparse domain based on the first set of indices. | 03-27-2014 |
20140140328 | SYNCHRONIZATION OF TRANSMISSION INTERVALS IN WI-FI - An access point generates a data packet such that the data packet has a same packet length as a data packet from at least one other access point. The access point reserves a channel for a time interval, and initiates transmission of the data packet over the channel at a same time as transmission of the data packet from the at least one other access point. As a result, the access point synchronizes its transmission interval with a transmission interval of the at least one other access point which reduces inter-access point interference. | 05-22-2014 |
20150092755 | CONTROLLING UPLINK TRANSMISSIONS FROM INTERFERING STATIONS - An access point to transmit a first message that instructs stations (STAs) to bypass uplink transmissions for a first time interval indicated in the first message. The access point is to transmit one or more first messages at a transmission power sufficient for a first portion of the STAs to decode the one or more first messages and insufficient for a second portion of the STAs to decode the one or more first messages. The transmission power can be determined based on minimum transmit powers associated with the STAs. Subsequent second time intervals can be determined based on uplink transmissions received from the STAs during the first time interval. | 04-02-2015 |
20150112650 | RADIO CHANNEL PREDICTION BASED ON STREET MAPS USING MODULAR ENVIRONMENTAL ELEMENTS - A method of modeling predicted values, at a selected point, of radio fields originating from a source in a geographic area including a plurality of streets and a plurality of buildings includes determining a first path from the source to the selected point, the first path including a first segment, and predicting a value, at the selected point, of a radio field originating from the source by modeling the first segment as a first waveguide, and at least one of (1) generating a first radio field coupling equation by coupling the first waveguide with a second waveguide, the second waveguide being a model of a second segment, the second segment being included in the first path, and (2) generating a second radio field coupling equation by coupling the first waveguide with an indoor model for modeling radio fields traveling through a building or outer wall. | 04-23-2015 |
20150296415 | Ack For Downlink WiFi Carrier Aggregation - An LTE cellular network and a WiFi network whose coverage areas overlap allow user devices accessing both networks to perform downlink channel aggregation through a tunneling feature provided by the cellular network whereby uplink information destined for the WiFi network is routed through an IP tunnel through the cellular network ultimately reaching the WiFi network via a common point or common network to which the WiFi and the cellular networks are connected. User devices having access to both networks are able to establish the tunnel during establishment of communications between such user devices and the WiFi network and use the tunnel as an uplink to convey information to the WiFi network, which is operated in a broadcast only mode or an ACK-less mode. | 10-15-2015 |
20160066204 | USER EQUIPMENT ASSISTANCE FOR INTERFERENCE MITIGATION IN UNLICENSED FREQUENCY BANDS - A first base station selects a subset of channels of an unlicensed frequency band based on indications of energy received over the channels. The first base station transmits one or more messages instructing user equipment to monitor the subset of channels and report information indicating whether at least one second base station is transmitting over the subset of channels. User equipment monitors the subset of channels of the unlicensed frequency band in response to receiving the one or more messages from a first base station indicating the subset of channels. The user equipment transmits one or more messages including information indicating whether one or more second base stations are transmitting over the subset of channels. | 03-03-2016 |
20160095009 | OCCUPANCY NOTIFICATIONS FOR UNLICENSED FREQUENCY BANDS - A node identifies at least one first channel of an unlicensed frequency band that is occupied by a first node that operates according to a first radio access technology (RAT). The node transmits a signal on a second channel of the unlicensed frequency band. The signal is formed according to a second RAT used for transmission on the second channel and the signal includes information identifying the at least one second channel of the unlicensed frequency band. | 03-31-2016 |
Patent application number | Description | Published |
20080276757 | EROSION-CORROSION RESISTANT CARBIDE CERMETS FOR LONG TERM HIGH TEMPERATURE SERVICE - Cermets are provided in which the ceramic phase is selected from the group consisting of Cr | 11-13-2008 |
20100288617 | Pyrolysis Reactor Materials and Methods - In one aspect, the invention includes a reactor apparatus for pyrolyzing a hydrocarbon feedstock, the apparatus including: a reactor component comprising a refractory material in oxide form, the refractory material having a melting point of at least 2060° C. and which remains in oxide form when exposed to a gas having carbon partial pressure of 10 | 11-18-2010 |
20110120723 | Low Alloy Steels With Superior Corrosion Resistance For Oil Country Tubular Goods - The present application describes a steel composition that provides enhanced corrosion resistance. This steel composition includes one of vanadium in an amount of 1 wt % to 9 wt %, titanium in an amount of about 1 wt % to 9 wt %, and a combination of vanadium and titanium in an amount of 1 wt % to about 9 wt %. In addition, the steel composition includes carbon in an amount of 0.03 wt % to about 0.45 wt %, manganese in an amount up to 2 wt % and silicon in an amount up to 0.45 wt %. In one embodiment, the steel composition includes a microstructure of one of the following: ferrite, martensite, tempered martensite, dual phase ferrite and martensite, and dual phase ferrite and tempered martensite. Further, the present application describes a method for processing the steel composition and use of equipment such as oil country tubular goods, fabricated with the steel composition. | 05-26-2011 |
20110120853 | Porous Pyrolysis Reactor Materials And Methods - In one aspect, the invention includes a reactor apparatus for pyrolyzing a hydrocarbon feedstock, said apparatus including: a reactor component comprising a refractory material in oxide form, the refractory material having a melting point of no less than 2060° C. and which remains in oxide form when exposed to a gas having carbon partial pressure of 10 | 05-26-2011 |
20140134743 | METHOD FOR IDENTIFYING LAYERS PROVIDING CORROSION PROTECTION IN CRUDE OIL FRACTIONS - A method for determining and identifying corrosion protective layers that provide corrosion protection against crude oils and crude oil fractions is disclosed. The method identifies naturally occurring constituents in crude oils that indirectly provide corrosion protection. A method assessing the potential of these constituents is also disclosed. The method includes exposing metal coupons with the crude oil or crude fraction of interest at the expected operating temperature of concern. The corrosion potential assessment further analyzes the exposed coupons with transmission electron microscopy and an additional high temperature exposure that challenges the tenacity of the protection offered by the corrosion protective layer. | 05-15-2014 |
20140332445 | Pyrolysis Reactor Materials and Methods - In one aspect, the invention includes a reactor apparatus for pyrolyzing a hydrocarbon feedstock, the apparatus including: a reactor component comprising a refractory material in oxide form, the refractory material having a melting point of at least 2060° C. and which remains in oxide form when exposed to a gas having an oxygen partial pressure of 10 | 11-13-2014 |
Patent application number | Description | Published |
20090188264 | Modular in-frame pumped refrigerant distribution and heat removal system - An apparatus, method and system are provided for a modular in-frame pumped refrigerant distribution system. Specifically, a micro-channel heat exchanger is positioned in an equipment cabinet close to equipment that generates heat. More specifically, the micro-channel heat exchanger may be positioned on a) a shelf above the equipment, b) the back side of the equipment, or c) a shelf below the equipment. The micro-channel heat exchanger is operable to receive a refrigerant supplied by an external heat exchanger along a primary flow path, transfer heat from air above and/or near the equipment to a coil of the micro-channel heat exchanger, circulate the refrigerant to extract the heat, and return the refrigerant with an extracted portion of generated heat to the external heat exchanger along a secondary flow path. The external heat exchanger may remove extracted heat from a building via a building chilled water system or an outdoor condenser unit. | 07-30-2009 |
20130194751 | CONTROLLING HEAT TRANSFER USING AIRFLOW-INDUCED FLUTTER OF CANTILEVERED ELASTIC PLATES - A capability for controlling heat transfer using airflow-induced fluttering of a cantilevered elastic plate is presented. A mounting structure is configured to be coupled to a surface of an element having a heat generating component coupled thereto. An elastic place is coupled to the mounting structure so as to arrange the elastic plate in a cantilevered position with respect to the surface of the element and at a position above the surface of the element when the mounting structure is coupled to the surface of the element. The elastic plate is configured to flutter, in response to air flow incident on the elastic plate, in a manner tending to disrupt the boundary layer region. The elastic plate may be arranged at a position that is selected based on a determined location of the boundary layer region. | 08-01-2013 |
20130194755 | BOARD-LEVEL HEAT TRANSFER APPARATUS FOR COMMUNICATION PLATFORMS - An apparatus, comprising a rack and a cooler. The apparatus also comprises a plurality of electronic circuit boards located in corresponding slots of the rack, each of the electronic circuit boards being held against a portion of the cooler by a corresponding force, some of the electronic circuit boards having a localized heat source thereon The apparatus also comprises a plurality of heat spreaders, each heat spreader configured to form a heat conducting path over and adjacent to one of the electronic circuit boards from one or more of the localized heat sources thereon to the portion of the cooler. The apparatus also comprises a plurality of compliant thermal interface pads, each of the pads being compressed between end of one of the heat spreaders and the portion of the cooler to form a heat conduction path therebetween. | 08-01-2013 |
Patent application number | Description | Published |
20090052320 | Estimator for end-to-end throughput of wireless networks - The present invention presents an architecture to dynamically measure and estimate the throughput perceived by a user during a connection in real-time in a wireless network system. The architecture system design of the present invention allows for information gathering independent of the mathematical models used and takes into account security settings in the network hosts. The present invention also sets forth a number of throughput estimators (TEs) that can be used within the architecture to gather the information needed to carry out the throughput estimation calculations. The throughput estimations can then be used for download rate control, QoS, load balancing, etc. The present invention also provides algorithms to calculate the real-time throughput experienced by a user flow. | 02-26-2009 |
20100199344 | REDUNDANCY DETECTION AND RESOLUTION AND PARTIAL ORDER DEPENDENCY QUANTIFICATION IN ACCESS CONTROL LISTS - Aspects of the invention pertain to analyzing and modifying access control lists that are used in computer networks. Access control lists may have many individual entries that indicate whether information can be passed between certain devices in a computer network. The access control lists may include redundant or conflicting entries. An aspect of the invention converts an order-dependent control list into an order-free equivalent. Redundant entries are identified and removed without adversely affecting the access control list. Redundancy may be identified by evaluating the volume contraction ratio, which is the ratio of the volume of spin-off entries to specific original entry in the access control list. This ratio reflects the extent of order-dependent impact on that entry in a given access control list. | 08-05-2010 |
20100199346 | SYSTEM AND METHOD FOR DETERMINING SYMANTIC EQUIVALENCE BETWEEN ACCESS CONTROL LISTS - Aspects of the invention pertain to analyzing and modifying access control lists that are used in computer networks. Access control lists may have many individual rules that indicate whether information can be passed between certain devices in a computer network. The access control lists may include redundant or conflicting rules. An aspect of the invention determines whether two or more access control lists are equivalent or not. Order-dependent access control lists are converted into order-independent access control lists, which enable checking of semantic equivalence of different access control lists. Upon conversion to an order-independent access control list, lower-precedence rules in the order-free list are checked for overlap with a current higher precedence entry. If overlap exists, existing order-free rules are modified so that spinoff rules have no overlap with the current entry. This is done while maintaining semantic equivalence. | 08-05-2010 |
20110283348 | SYSTEM AND METHOD FOR DETERMINING FIREWALL EQUIVALENCE, UNION, INTERSECTION AND DIFFERENCE - Aspects of the invention pertain to integrated compliance analysis of multiple firewalls and access control lists for network segregation and partitioning. Access control lists may have many individual rules that indicate whether information can be passed between certain devices in a computer network. The access control lists in different firewalls in different network segments within a given network may overlap or have inconsistent rules. Aspects of the invention generate differences between firewalls, analyze equivalency of firewalls, generate the intersection (if any) between a pair of firewalls, and generate the union (if any) between firewalls. Such information provides an integrated analysis of multiple interrelated firewalls, including inbound and outbound access control lists for such firewalls, and may be used to manage firewall operation within the network to ensure consistent operation and maintain network security. It also addresses a wide range of security questions that arise when dealing with multiple firewalls. | 11-17-2011 |
20120197618 | ARCHITECTURE AND METHOD FOR REALISTIC VEHICULAR NETWORKING AND APPLICATIONS VISUALIZATION - A system and method for vehicular networking and applications visualization comprises selecting a simulation area, converting the selected simulation area to graph representation, eliminating streets outside the simulation area, generating, using the graph representation, vehicles and random vehicle traffic in the simulation area, calculating vehicle movement in coordinates, transforming the calculated coordinates into a format compatible with a general purpose communication networking simulation tool, simulating, using the transformed calculated coordinates and the general purpose communication networking simulation tool, an application, and performing visualization of the simulation. The application can be local traffic information, the vehicle movement and communication among the vehicles. The simulation can be at least 2000 seconds and communication can be disruption tolerant. The visualization of the simulation can comprise a global view of all vehicles and one or more local views, each local view of one vehicle. The simulation area can be selected from a geographic map. | 08-02-2012 |
20120231786 | SYSTEM AND METHOD FOR QUANTIFYING ANCHOR PLACEMENT IMPACT PLACEMENT ON LOCATION ACCURACY - A computer implemented method for determining geometric impact of anchor placement on localization accuracy and the subset of anchors which mitigates the impact of measurement-induced noise. | 09-13-2012 |
20120263102 | ARCHITECTURE FOR OPEN COMMUNICATION IN A HETEROGENEOUS NETWORK - Network architecture configured for open communication between a plurality of sub-networks. Each of the plurality of sub-networks has a different routable network addressing scheme. The architecture includes at least one broker node adapted to communicate using at least two different routable network addressing schemes. The broker node comprises an identification management module configured to collect peer-application addresses for nodes currently accessing a specific application, the peer-application addresses being associated with a specific application, an address resolution module configured to map each of the peer-application addresses to a sub-network specific routable network address and a network coordination module configured to monitor and coordinate sub-network communication capabilities between the broker node and at least one other broker node and elect a primary broker node for each sub-network which the broker node and at least one other broker node is capable of communication. | 10-18-2012 |
20140040172 | Privacy-Preserving Aggregated Data Mining - An apparatus, system and method are introduced for preserving privacy of data in a dataset in a database with a number n of entries. In one embodiment, the apparatus includes memory including computer program code configured to, with a processor, cause the apparatus to form a random matrix of dimension m by n, wherein m is less than n, operate on the dataset with the random matrix to produce a compressed dataset, form a pseudoinverse of the random matrix, and operate on the dataset with the pseudoinverse of the random matrix to produce a decompressed dataset. | 02-06-2014 |
20140133402 | Architecture for Open Communication in a Heterogeneous Network - Network architecture configured for open communication between a plurality of sub-networks. Each of the plurality of sub-networks has a different routable network addressing scheme. The architecture includes at least one broker node adapted to communicate using at least two different routable network addressing schemes. The broker node comprises an identification management module configured to collect peer-application addresses for nodes currently accessing a specific application, the peer-application addresses being associated with a specific application, an address resolution module configured to map each of the peer-application addresses to a sub-network specific routable network address and a network coordination module configured to monitor and coordinate sub-network communication capabilities between the broker node and at least one other broker node and elect a primary broker node for each sub-network which the broker node and at least one other broker node is capable of communication. | 05-15-2014 |
20150074227 | METHOD, APPARATUS AND SYSTEM FOR A LOCATION-BASED UNIFORM RESOURCE LOCATOR - An aspect of the present invention is a method for routing content information to a mobile user or client application. The method preferably comprises re-directing a user request to one or more gateway servers provided via an overlay network. In another aspect, the present invention is an apparatus that includes a proxy service that intercepts content information requests to the Internet and re-directs the content requests to an overlay. Another aspect of the present invention comprises a location-based Uniform Resource Locator that includes a protocol semantic portion and a location-based resolver address portion that identifies one or more resources on a network based on the geographical location of the resources. | 03-12-2015 |