3461results about How to "Avoid congestion" patented technology

An electronic data flash card accessible by a host computer, includes a flash memory controller connected to a flash memory device, and an input-output interface circuit activated to establish a communication with the host. In an embodiment, the flash card uses a USB interface circuit for communication with the host. A flash memory controller includes an arbitrator for mapping logical addresses with physical block addresses, and for performing block management operations including: storing reassigned data to available blocks, relocating valid data in obsolete blocks to said available blocks and reassigning logical block addresses to physical block addresses of said available blocks, finding bad blocks of the flash memory device and replacing with reserve blocks, erasing obsolete blocks for recycling after relocating valid data to available blocks, and erase count wear leveling of blocks, etc. Furthermore, each flash memory device includes an internal buffer for accelerating the block management operations.

A network switch includes network switch ports, each including a port filter configured for detecting user-selected attributes from a received layer 2 frame. Each port filter, upon detecting a user-selected attribute in a received layer 2 frame, sends a signal to a switching module indicating the determined presence of the user-selected attribute, for example whether the data packet has a prescribed priority value. The network switch includes a flow control module that determines which of the network switch ports should output a flow control frame based on the determined depletion of network switch resources and based on the corresponding priority value of the network traffic on each network switch port. Hence, any network switch port that receives high priority traffic does not output a flow control frame to the corresponding network station, enabling that network station to continue transmission of the high priority traffic. In most cases, the congestion and depletion of network switch resources can be alleviated by sending flow control frames on only those network switch ports that receive lower priority traffic, enabling the network switch to reduce congestion without interfering with high priority traffic.

When carrying out a downlink handover, a source base transceiver station from which a mobile node is moving receives packets to be transmitted, via a wireless section, to the mobile node from an IP network, and copies and transfers them to a destination base transceiver station to which the mobile node is moving. On the other hand, when carrying out an uplink handover, the source base transceiver station compares the reliability of transport blocks which are received via a wireless section, from the mobile node and which are demodulated and decoded by the local station with that of transport blocks which are received via an IP network, from another base transceiver station and which are demodulated and decoded thereby, packetizes selected transport blocks with a better quality, and transmits them to a communications-partner node according to a route table, thereby implementing distribution of traffic via the IP network.

A process and system for visually displaying to a user at a client computer alternative web pages to a desired web page. The invention locates these alternative web pages in search engines by searching for alternative cached copies of web pages and / or mirror sites. A user may view a hotlink to a desired web page on an accessed web page and either be provided with a table of alternative web pages for manually selecting the alternative web page or the invention may automatically, dynamically select the best alternative web page to the originally selected web page.

A method for obtaining feedback from one or more wireless subscriber communication unit(s) related to a broadcast service in a wireless communication system comprising at least one communication cell. The method comprises transmitting a request message by a network controller to one or more wireless subscriber communication unit(s); receiving and processing the request message by a wireless subscriber communication unit; transmitting a layer-1 response signal by the wireless subscriber communication unit in response to the request message; and detecting by the network controller the layer-1 response signal in a particular communication cell, and in response thereto, performs one of the following: (i) entering a point-to-multipoint broadcast mode of operation; (ii) modifying a delivery of the broadcast service in that communication cell.

A border gateway protocol (BGP) management system (10) dynamically determines an optimum or preferred data route (12) from wireline networks (18) into a satellite communication system (11). Multiple gateways (16, 30-34) provide access points to the wireline networks. The management system includes a connectivity matrix which processes (74) information, such as bandwidth availability and route congestion, and then generate a BGP update that is communicated (80) into at least one of the gateways. The BGP update promotes preferred gateways and so identifies a preferred access path to the satellite system. Specifically, the BGP update instruction contains a metric altering a weighting of an identified route data route, which metric effects path selection at a gateway receiving IP datagrams. The metric is derived from information pertaining to a connectivity matrix associated with the satellite system.

A robot-enabled method of picking cases in a warehouse is provided. A robotic vehicle includes a processor configured to access a memory, a user input device, an output device, and a load platform, and has access to an electronically stored representation of a warehouse. The representation includes a map that defines aisles for storing items arranged as pick faces within the warehouse. A pick list is generated from an order; the pick list provides identifications of items to be picked to fulfill the order. Determined from the pick list is a plurality of stops at pick faces associated with the items. A route within the map is generated that includes the plurality of stops. The robotic vehicle iteratively guides itself along the route and automatically stops at each of the plurality of stops to enable loading of the items from the pick list onto the load platform.

When carrying out a downlink handover, a source base transceiver station from which a mobile node is moving receives packets to be transmitted, via a wireless section, to the mobile node from an IP network, and copies and transfers them to a destination base transceiver station to which the mobile node is moving. On the other hand, when carrying out an uplink handover, the source base transceiver station compares the reliability of transport blocks which are received via a wireless section, from the mobile node and which are demodulated and decoded by the local station with that of transport blocks which are received via an IP network, from another base transceiver station and which are demodulated and decoded thereby, packetizes selected transport blocks with a better quality, and transmits them to a communications-partner node according to a route table, thereby implementing distribution of traffic via the IP network.

Traffic information, including flow information and incident information, obtained through a traffic management system for providing and facilitating the exchange of traffic information between a remote location and a vehicle may be used in route calculation by a navigation device. The navigation device may recalculate a route based on anticipated user error. Alternatively, the navigation device may recalculate a route using received traffic information triggered by the receipt of a traffic information update, or triggered by the passage of an amount of time. The broadcast rate of traffic information updates may vary temporally (providing more frequent updates during peak commute times) or geographically (providing more frequent updates to metropolitan areas with increased traffic information needs). If route calculation is triggered by an elapsed amount of time, the amount of time may vary to be shorter during peak commute times. Additional route calculation techniques allow the incorporation of historical traffic information or the use of the most recent traffic information if incomplete traffic information is available. Still further route calculation techniques may calculate a best route by avoiding zigzagging or evaluating an assigned cost of a potential route.

Virtual channels are used to improve quality of service through a large port count switch. Data frames are sent from one small switch to another small switch within the large port count switch on virtual channels. The use of virtual channels helps prevent congestion caused by a first external source device sending data to a first external destination device from affecting a second external source device sending data to a second external destination device.

A robot-enabled method of picking cases in a warehouse is provided. A robotic vehicle includes a load platform and a robotic order selector, and has access to an electronically stored representation of a warehouse. The representation includes a map that defines aisles for storing items arranged as pick faces within the warehouse. A pick list is generated from an order; the pick list provides identifications of items to be picked to fulfill the order. A plurality of stops at pick faces associated with the items is determined. A route within the map is generated that includes the plurality of stops. The robotic vehicle iteratively guides itself along the route and automatically stops at each of the plurality of stops to enable robotic loading of at least some of the items from the pick list onto the load platform.

The invention provides a time delay and bandwidth resource-based relay selection method aiming at broadcast and telecommunication services. The method comprises the following steps of: obtaining a system interruption selection decision value by acquiring time delay information and bandwidth resource information of a node, and selecting a relay node by using the decision value as a judgment threshold. Meanwhile, the invention provides an optimal relay selection cooperative communication method for minimizing interruption probability, and provides a relay routing selection method for supportingmulti-path transmission. The relay routing selection method can dynamically select proper routing according to the change of a network. The method can expand the coverage range of cells and eliminateor reduce communication blind points so as to increase the throughput of a system, improve the spectrum frequency of the system and enhance the quality of services.

The invention discloses a content acquisition method, a content acquisition node and a content network, which belong to the field of communication. The method comprises the following steps of: receiving a content request, wherein the content request at least comprises an identifier of requested contents; judging whether the contents corresponding to the identifier can be locally acquired or not, and if the contents corresponding to the identifier can be locally acquired, locally acquiring the contents corresponding to the identifier; otherwise, querying a name resolution system according to the identifier to obtain a target node corresponding to the identifier, and acquiring the contents corresponding to the identifier from the target node, wherein the name resolution system comprises a hierarchical distributed hash table and a global content resolution structure; and the global content resolution structure supports name aggregation and longest match searching. The node comprises a content agent module and a content acquisition module. The content network comprises the content acquisition node and a transmission network. In the content acquisition method, the content acquisition node and the content network, a content-oriented network architecture is constructed by adopting a distributed scheme, the content delivery efficiency and the safety of the network are improved by introducing an optimization strategy, network investment is reduced, and the network is more adaptive to the rapid increasing of the contents.

The invention discloses a method for setting a crossing self-adapting changeable driveway by a computer program, aiming to solve the problem that a single left turning driveway is supersaturated and two left turning driveways are insufficient. The method comprises the following steps: firstly installing a No. 1 triggering detector, a No. 2 triggering detector, a main signal light and a pre-signallight; and utilizing other existing hardware equipment. The method also comprises the following steps: (1) judging the attribute of the changeable driveway, i.e. judging the attribute of the changeable driveway by whether an inequation that N is larger than or equal to N<*> is established or not, wherein N is the continuous periodicity of the time occupancy ratio of the No. 1 triggering detector and the No. 2 triggering detector, which is larger than a critical value, and N<*> is the critical value triggering changeable driveway control; (2) controlling the signal timing scheme optimization ofthe changeable driveway, i.e. (1) controlling the changeable driveway when signal period time is unchangeable, and (2) controlling the changeable driveway when the signal period time is changeable; and (3) setting a pre-signal of the changeable driveway, i.e. (1) changing the attribute of the changeable driveway from straight running to left turning, and (2) changing the changeable driveway fromthe left turning to the straight running.

Mobile routers in a tree-based network topology with a single clusterhead in an ad hoc network establish connectivity based on each attached mobile router sending a neighbor advertisement message to an attachment mobile router via a corresponding egress interface. Any neighbor advertisement message received by a mobile router is used to identify specified network prefixes that are reachable via the source of the neighbor advertisement message. Each attached mobile router outputs to its attachment router another neighbor advertisement message that specifies the network prefix used by the mobile router, and the specified network prefixes from its attached mobile routers. The mobile router also identifies peer mobile routers having the same depth, and selectively shares limited routing information with the peer routers, enabling the mobile router to bypass the clusterhead and reach remote prefixes via the peer routers without burdening the tree.