1766 results about "Goodput" patented technology

A packet forwarding method for optimizing packet traffic flow across communications networks and simplifying network management. The invention provides look-up-free and packet-layer-protocol transparent forwarding of multi-protocol packet traffic among Layer-N (N=2 or upper in the ISO OSI model) nodes. The invention enables flexible and efficient packet multicast and anycast capabilities along with real-time dynamic load balancing and fast packet-level traffic protection rerouting. Applications include fast and efficient packet traffic forwarding across administrative domains of Internet, such as an ISP's backbone or an enterprise virtual private network, as well as passing packet traffic over a neutral Internet exchange facility between different administrative domains.

Systems and methods which provide a scheduled media access control (MAC) architecture are shown. Scheduled MAC architectures provided according to embodiments result in a one function-at-a-time approach, wherein stations are provided parallel process media access. A communication framework is established for communication among stations, wherein the communication framework preferably defines how to request to access, how to send data frames, and/or how to terminate a session in terms of functional intervals. The functional intervals are preferably arranged in such a manner that the fairness, throughput efficiency, contention, traffic flow management, and latency are considered. A super frame structure is preferably defined from the various functional intervals. The scheduled MAC architecture could co-exist with other MAC protocols such as those based on carrier sensor multiple access schemes.

Methods and apparatus for high throughput wireless cells and networks are described. The wireless cells may be equipped with multiple radios. Antennas may be arranged into overlapping and non-overlapping patterns. Channels may be assigned to foster servicing clients, and inter-cell communication. Attenuation may be used to decrease interference. Networks may be formed using a variety of methods and apparatus.

Apparatus and methods for improving the throughput and capacity of a wireless communications network. In one embodiment, this improvement is accomplished by focusing upon reduction of the co-channel interference, including the interferences that are unpredictable or undetectable to a traditional network. Various implementations detect the receiver interference (i.e. the interference affecting the receiver performance) at the transmitting node in order to avoid or reduce its effect at the receiving node. This detection can be as simple as e.g., spectral sensing constituting power measurement, and/or can be more sophisticated such as measurements including bandwidth, duty cycle and statistical behavior of the unwanted signal.

A pipelined linecard architecture for receiving, modifying, switching, buffering, queuing and dequeuing packets for transmission in a communications network. The linecard has two paths: the receive path, which carries packets into the switch device from the network, and the transmit path, which carries packets from the switch to the network. In the receive path, received packets are processed and switched in an asynchronous, multi-stage pipeline utilizing programmable data structures for fast table lookup and linked list traversal. The pipelined switch operates on several packets in parallel while determining each packet's routing destination. Once that determination is made, each packet is modified to contain new routing information as well as additional header data to help speed it through the switch. Each packet is then buffered and enqueued for transmission over the switching fabric to the linecard attached to the proper destination port. The destination linecard may be the same physical linecard as that receiving the inbound packet or a different physical linecard. The transmit path consists of a buffer/queuing circuit similar to that used in the receive path. Both enqueuing and dequeuing of packets is accomplished using CoS-based decision making apparatus and congestion avoidance and dequeue management hardware. The architecture of the present invention has the advantages of high throughput and the ability to rapidly implement new features and capabilities.

Some embodiments relate to a network comprising two RBridges connected by a link where the two RBridges are not the ingress and egress RBridge for said frames, wherein said RBridges automatically exchange information as to their support of hop-by-hop reversible frame aggregation, reversible header compression, and reversible data compression, and wherein if both RBridges support any or all of these features in the same fashion, one or more of said features are automatically applied to appropriate frames at the transmitting RBridge and removed at the receiving RBridge, increasing the throughput of the link.

A method and system for increasing the overall network throughput over a wireless local area network (WLAN). Specifically, in one embodiment of the present invention, the dynamic switching between the Distributed Coordination Function (DCF) and Point Coordination Function IEEE 802.11 access modes is determined according to the load conditions over the WLAN in a method and system. Stations and access points within a WLAN monitor conditions within the network to determine which access mechanism is most optimum for the current load conditions. Some factors to consider in determining the load conditions include but are not limited to the number of transmissions, number of receptions, and number of collisions.

A method and an apparatus select an access point (AP) in a wireless LAN to associate or reassociate, based on considerations that take into account the quality-of-service (QoS) status of the stations (STAs) and the potential hidden terminal effect. The method utilizes advertised or requested information obtained from an AP which includes the QoS status in each basic service set (BSS) and estimates the potential hidden terminal (HT) effect based on local channel sensing by the STA. The method selects the AP in a manner that reduces the possibility of collision from equal and higher priority HTs, thus providing greater transmission throughput and improving performance.

The available bandwidth of a communication path between two nodes of a computer network is determined using probe packages that are transmitted between a sender one of the nodes and a receiver one of the nodes at varying transmission rates. Each successive transmission rate of the probe packages is selected according to: (i) an achieved throughput for a transmission of a preceding one of the probe packages, and (ii) a deviation between the achieved throughput for the transmission of the preceding one of the probe packages and a corresponding transmission rate of the preceding one of the probe packages.

A network device for processing data includes at least one ingress module for performing switching functions on incoming data, a memory management unit for storing the incoming data and at least one egress module for transmitting the incoming data to at least one egress port. The at least one ingress module is configured to determine a priority for the incoming data, where that priority is mapped to a discrete number of priority groups and where the priority groups are determined on a per-port basis and provide guaranteed delivery or best throughput, and flow of data through the network device is controlled on a basis of at least one of the priority groups and assigned priorities.

The invention includes an apparatus and method for determining an optimal route based upon path quality of routes to an access node of a wireless mesh network. The method includes receiving routing packets at the access node through at least one wireless route. Each routing packet including route information that identifies the wireless route of the routing packet. A success ratio of a number of successfully received routing packets versus a number of transmitted routing packets is determined over a period of time T1, for each wireless route. The wireless route having a greatest success ratio is first selected, as are other wireless routes that have success ratios within a predetermined amount of the greatest success ratio. Of the first selected routes, routing packets are at the access node through the first selected routes. Again, each routing packet including route information that identifies the wireless route of the routing packet. A success long ratio of a number of successfully received routing packets versus a number of transmitted routing packets is determined over a period of time T2, wherein T2 is substantially greater than T1, for each first selected route. The wireless route having a greatest success long ratio are second selected, as are other wireless routes that have success long ratios within a second predetermined amount of the greatest success long ratio. The second selected routes having a greatest throughput are third selected. An optimal wireless route based upon the third selected routes is determined.

A method and apparatus for determining an ACK frame appropriate for a wireless local area network (LAN) environment where high throughput stations and legacy stations with different data transmission capabilities coexist to acknowledge the receipt of a transmission frame. The method and apparatus enable each station to access a medium normally in the wireless LAN environment and complement a carrier sensing method. The method includes determining types of stations on a wireless local area network, determining the ACK frame for acknowledging the receipt of the transmission frame on the wireless local area network according to the result of determination, and notifying a corresponding station on the wireless local area network of the determined ACK frame.

A compact, high gain 8-element circular smart antenna is able to scan a beam azimuthally through 360°. The 8-element array is placed on a ground skirt and connected to an 8-channel beamforning board via a transfer plate. Each channel has two T/R switches, one band pass filer, one power amplifier, two low noise amplifiers, one phase shifter, and one attenuator. The 8-channel-signal is combined through power splitters/combiners and then sent to a connected radio. An FPGA chip controls the digital phase shifters, attenuators and switches for signal searching, beamforming and tracking. The smart antenna can be operated as a compact switched beam system or with an additional processor as an adaptive array system. The smart antenna is capable of tracking mobile targets, directionally communicating with desired users, suppressing interference and jamming, and enabling long range communications with high throughput and reliable connection because of its high antenna gain.

A distributed storage network contains a user device that has a computing core, a DSN interface and either an integrated or an externally-connected camera or sensor. The camera or sensor collects data from its surrounding environment and processes the data at least partially through error coding dispersal storage functions that include slicing the data into a plurality of error-coded data slices. The error-coded data slices are output by the user device for one or more of storage within a dispersed storage network (DSN) memory, playing on a destination player, or broadcast consumption over a network. A storage integrity unit manages the storage capacity, use, and/or throughput of the system to ensure that data is processing in a real time or near real time so that data can be accurately processed and perceived by targeted end users.

In a method for transmitting radio link protocol frames in a mobile radio communication system, if an error occurs on a radio section when user data frames of a radio link protocol (RLP) having respective different series numbers are transferred from a transmitting station to a receiving station, at least one missed user data frame is caused at the receiving station. At this time, the receiving station transmits, repeatedly by first times, a negative acknowledgement (NAK) control frame of the RLP for at least one missed user data frame, to the transmitting station. The transmitting station sends, by second times different from the first times, at least one missed user data frame in response to the received NAK control frame, to the receiving station. Particularly, series numbers of respective missed user data frames are sent through one NAK control frame to the transmitting station, at equal time when a timer for an NAK is expired, to accordingly result in reducing the number of the total NAK control frames and increasing a throughput per unit time.

The invention discloses a system and a method for testing the performance of an AP (Access Point) in a WLAN (Wireless Local Area Network). The system comprises a throughput testing server, two gold machines, two adjustable attenuators, two measuring antennas and a throughput testing client, wherein the throughput testing server is connected to the two gold machines; the two gold machines are respectively connected to the two antennas through the two adjustable attenuators; and the throughput testing client is connected to a to-be-measured AP. The system and the method for testing the performance of the AP in the WLAN can test the wireless coverage performance on the whole, and comprehensively test the wireless coverage performance and direction performance of a product from point to surface.

The present invention is a procedure that allows configuring a random access IEEE 802.11 wireless network, operating in infrastructure mode (all terminals communicate exclusively with an AP (Access Point)), in such a way that throughput is optimized when the network is saturated, satisfying traffic characteristics, in presence or absence of the hidden terminal phenomenon and the number of terminals that communicate with the AP. It may be applied to networks that run a specific application or to those that have devices that run different applications. This procedure can be translated into a program that is operated by a wireless network administrator for network configuration. This program may also be incorporated into the configuration program of an AP and devices conforming to these standards. This invention can be applied to devices that act as AP's, such as a bridge, switch or router and the configuration can be manual or automatic, static or dynamic.