40 results about "Committed information rate" patented technology

A method, apparatus and article of manufacture for discarding a data packet. The data packet is classified according to a type of service (TOS) indicator and modified with an internal service class (ISC) indicator according to the TOS indicator. The data packet is modified with a watermark (WM) indicator according to the availability of a system resource. The ISC, WM and a drop preference (DP) indicator of the data packet are compared to a committed information rate (CIR). The packet is discarded if the DP exceeds the CIR.

Multiple bandwidth requestors (220), a bandwidth manager (420) and a forward link (410) from the bandwidth manager to the bandwidth requestors are used to allocate bandwidth in a return link beam (210). The uplink bandwidth allocation is preferably based on the information to be transmitted provided by the user Automatic Data Processing Equipment (ADPE) (300) and overall system data loading. The preferred method exercised by the bandwidth manager (420) allocates bandwidth on the return link (210) to individual user terminals in either a minimal rate required for the protocol being exercised (213), a committed information rate required for the services being requested, or a fair share rate (214) that allows maximum transfer of data from the user terminal (201) to the gateway (400).

A method and system for providing a virtual private communication network to transport customer data between a set of customer devices coupled to a provider network. A committed information rate is advertised to a provider tandem. The provider tandem determines whether sufficient network resources exist to successfully transport to a destination customer device all offered data from the set of customer devices.

A system and method are disclosed for using tolerances obtained from a user together with historical information about a communication network to analyze the network's performance and to calculate and recommend a specific change to the committed information rate (CIR) over a given frame relay permanent virtual circuit (PVC). The historical information, which is collected by a network management system connected to at least two communication devices in a communication network, relates to various performance parameters, which may include the total data transmitted, received and dropped above and within the original CIR, and the burstiness of the data. The historical information is automatically analyzed in view of the user's designated tolerances to determine the network's data transmission performance, and a forward-looking recommendation of an optimum CIR is made, based on the analysis. The results of the analysis and the recommended change to the CIR are displayed to the user in a graphical format.

In a bandwidth policing apparatus which accommodates a large number of user groups, bandwidth policing for each user group is performed at high speed. When there is any extra bandwidth in bandwidth for a user group, the contracted committed information rate for each user is guaranteed invariably while using this effectively. The bandwidth policing apparatus accumulates packets of a plurality of user groups under bandwidth policing in the same packet accumulate FIFO. Also, for a packet which does not exceed the contracted bandwidth for each user, the contracted bandwidth for each user is guaranteed by deciding that the packet does not exceed the contracted bandwidth for each user group.

The invention relates to a message transmission method and a hybrid access gateway. The method comprises the following steps: receiving a message of which the destination is a home gateway sent by network side equipment through the hybrid access gateway; and when that a first transmission link is congested and a second transmission link is not congested is detected, acquiring a first CIR (Committed Information Rate) of the first transmission link and a second CIR of the second transmission link, classifying the message into a first class message and a second class message, transmitting the first class message through the first transmission link, and transmitting the second class message through the second transmission link. Thus, the first transmission link and the second transmission linkcan be accessed into the hybrid access gateway when the first transmission link is congested and the second transmission link is not congested, and the hybrid access gateway can control the one-way delay of the first transmission link and the second transmission link by reasonably allocating messages transmitted by the second transmission link, so that the problem of packet loss caused by sortingbuffer overflow is avoided, and the transmission efficiency of link transmission is greatly improved.

Packet metering systems and methods optimize utilization of green or committed tokens. The packet metering method includes receiving a packet of size B in an interval; and marking a color of the packet as green for committed, yellow for excess, or red for discard, based on the size B, a current committed token bucket for the interval, a current excess token bucket, and an overflow counter used to preserve unused green tokens from previous intervals while preserving Committed Information Rate (CIR) and Committed Burst Size (CBS) for the interval.

The invention discloses a method for controlling the flow of an IP data stream, which comprises the following steps: step 1, carrying out route and flow classified search on data messages based on a preset key word; step 2, carrying out message header processing and dyeing operation based on the matched table entries of the searching result; and step 3, carrying out follow-up action operations, wherein the matched table entries comprise next hop exit, data type, survival time, committed information rate (CIR), token count in bucket C (Tc), token count in bucket E (Te), committed burst size (CBS) and excess burst size (EBS). Based on the similarity between the precise route search and the flow control and the integral design combining the flow control and the precise route search, the invention can greatly simplify the difficulty in designing the flow control function for the IP data stream on the routing and switching device having the precise route search function, thereby lowing the design and production costs.

A method of automatically detecting the service level agreement settings in an Ethernet virtual circuit (EVC) carrying user packets comprises generating synthetic packets different from the user packets, on a data path in the EVC at a level sufficiently high to saturate the EVC. This accelerates the detection of actual effective values for the Committed Information Rate (CIR) and the Excess Information Rate (EIR) by triggering traffic shaping devices in the data path to enforce the CIR and EIR settings configured for those devices. A plurality of traffic samples are collected from the data path during a sampling period that is long enough to allow the collection of at least two valid traffic samples, where a valid traffic sample is the amount of user packets measured between two consecutive losses of synthetic packets. The CIR and EIR values enforced by the traffic shaping devices are determined from the collected samples.

A method of transmitting packets wherein said packets are comprised in a plurality of flows, the flows comprising flow characteristics controlling admission of incoming flows. A plurality of admitted incoming flows with the same class of service are inserted into a queue. A committed information rate value corresponding to said queue and a bandwidth available for transmission of said queue according to the identified committed information rate value are identified. An order for transmission for the queues is established based on the class of service of the queue and the identified bandwidth. A plurality of cells of the same size are generated from a plurality of frames and the cells are distributed between a plurality of individual transmission channels according to the ordered defined for transmission. A transmitter equipment and a receiver equipment are also disclosed.

The invention discloses a channel estimation method of a TDS (Total Dissolved Solids)-OFDM (Orthogonal Frequency Division Multiplexing) system, belonging to technical field of information transmission. For accurately extracting an effective CIR (Committed Information Rate) from a result C (n) C(n) which is obtained by carrying out a slipping correlation calculation to on a baseband signal and a PN1c sequence, the channel estimation method disclosed by the invention comprises the following steps: firstly, adopting an iterative threshold detection (ITD) method to detect a large-amplitude component in the result C(n) and removing a pseudo peak from the C(n) during an iteration process; then, adopting a double-sliding window detection (DSW) algorithm to detect a small-amplitude CIR component; and finally, combining the two detected results. The realizing process of the channel estimation method is shown as figure 4, wherein the detected object C0 (n) of the double-sliding window contains the amplitude CIR component; h1 and a are CIR and h1 obtained by iterative threshold detection; b is CIR obtained by double-sliding window detection; and the sum of a, h1 and b is a channel impulse response CIR vector h1 for channel equalization. The channel estimation method disclosed by the invention is applied, so that the channel estimation precision is high, channel change can be quickly followedtracked, and performance of a receiver can be improved.

The invention discloses a management method and a system for commitment access which belongs to network management field. The method comprises: calculating the message flow rate in preset time; comparing the calculated message flow rate with the allocated commitment information rate; if the calculated message flow rate is bigger than the allocated commitment information rate, then applying for the commitment access rate resource; if the calculated message flow rate is smaller than the preset proportion of the allocated commitment information rate, then releasing the commitment access rate resource. The system consists of a commitment access rate allocation module, a rate calculation module, a comparison module, an application module and a releasing module. The invention manages the commitment access rate resource dynamically by message flow triggering, which can fully utilize the commitment access rate resource and relieve the tension of commitment access rate resource.