42results about How to "Avoid wasting bandwidth" patented technology

Circuitry and processed carried out thereby are disclosed for transmitting video-on-demand and interactive service data and other service data on an MPEG multiplex and sending management and control data including conditional access EMM key data in-band in said MPEG multiplex in MPEG packets having the DOCSIS PID. Processes to send conditional access data by sending ECM messages containing control words encrypted with session keys in said MPEG multiplex and sending EMM messages containing session keys encrypted with private set top box users keys are disclosed. The EMM messages are sent in-band in MPEG packets having the DOCSIS PID to only the set top boxes that request them and which have ordered an encrypted service. A head end with routing/switching capability to route MPEG transport streams encapsulated in IP packets is also disclosed.

A method for resource allocation in an FDMA communication system is disclosed in which the resource allocation method includes distinguishing a dynamic resource allocation service, an amount of resource allocation for which changes every transmission time, and a static resource allocation service, an amount of resource allocation for which is fixed every transmission time; determining a start point of the static resource allocation service in a one-dimensionally arranged logical resource, and sequentially allocating resources for each static resource allocation service; and allocating resources left after the static resource allocation, to the dynamic resource allocation service in a reverse direction as that of the static resource allocation service, starting from a last resource located in the opposite side of static resources for the static resource allocation service in the one-dimensionally arranged logical resource.

A method for dynamic division of the radio capacity in a Time Division Multiple Access (TDMA) system between different packet radio services. Each packet radio service is composed of packets with the same or different priority. Several MSs can share a time slot. Information regarding to the interference for each MS is obtained by a request from a mobile station (MS) or through a traffic measurement at the base transceiver station. This information, along with the QoS contract, is used as criteria in allocating more time slots to packet radio service. A framework of dynamic scheduling for mobile communication (DSMC) comprising a Channel Codec Unit (CCU) and a Packet Control Unit (PCU) determines the service rate upon the required QoS of a user and the interference level.

The present invention provides a transmission method for a physical layer operations, administration and maintenance (PLOAM) message in a passive optical network. The method includes: a transmitter dividing a PLOAM message to generate more than two new PLOAM messages, each of which comprises at least a message identification (Message ID) field (1501); and the transmitter transmitting the new PLOAM messages identified with Message IDs (1502). The invention also provides an assembling method for a PLOAM message in a passive optical network and a transmission device for a PLOAM message in a passive optical network. By using the method of the invention, the invention improves the efficiency of the PLOAM message transmission, avoids bandwidth waste, and simultaneously improves the flexibility and timeliness of the PLOAM message transmission between an OLT and an ONU.

This invention discloses a system and a method for avoiding congestion of network devices, in which, a master control board and line cards transmit information via inter-plate communication channels, a link state inform module obtains the state change information of its line card port and synchronizes it to the master control board, a link state alter process module stationed in the master control plate gets the information then sends the VLAN information and port state information to related line cards to delete ports with disabled links from the VLAN and only writes the ports with valid links when writing in the chips.

In wireless USB data transfers over UWB, software configures hardware thresholds to control data transfer in a manner that uses bandwidth for good connections over bad connections, given the high error rate experienced with wireless USB. Periodic transfers are first attempted before asynchronous transfers, as long as the periodic transfers are successful. When failures are occurring, the hardware includes a mechanism having a software-configurable threshold specifying the number of errors a given endpoint can tolerate before it is paused in the schedule. By pausing transfer attempts that are likely to again fail, endpoints with successful transfers are favored over those experiencing errors. When the number of active transfers pending exceeds a software-configurable notification threshold for isochronous endpoints, the hardware notifies the software of this state, corresponding to a low-buffer condition at the receiver. The software may then reconfigure thresholds and deactivate other transfers to force data transfers into the buffer.

The invention relates to a file transmission method in deep space communication and belongs to the technical field of deep space communication. According to the method, the predetermined coding redundancy is used for carrying out fountain coding on file data grouping, then, the sending is carried out through a link, a mode that a sending end actively stops is adopted, the one-step successful transmission probability of files is improved, the file transmission efficiency is improved, the bandwidth waste in large delay deep space communication environment caused by the passive stop of the sending end is avoided, and the link utilization rate is improved; and meanwhile, a reliable file transmission method in CFDP (CCSDS (consultative committee for space data system) file delivery protocol) is combined, the contents of a file data PDU (protocol data unit) and the contents of an NAK (negative acknowledge) PDU are defined, the reliable transmission of deep space files on the basis of the fountain coding is realized, and good protocol compatibility and practicability are realized.

The invention discloses a dynamic ECMP implementation method based on network chips. The method includes the steps that firstly, a routing table is looked up according to a destination IP of a message, and next-hop exit information is acquired as an ECMP set; secondly, whether dynamic ECMP information is acquired in the ECMP set or not is judged; if no dynamic ECMP information is enabled in the ECMP set, the message is forwarded through a static ECMP link determined by the message Hash value, if the dynamic ECMP information is enabled in the ECMP set, a dynamic ECMP flow table is looked up, and the message is automatically routed and forwarded according to information in the dynamic ECMP flow table and a load trigger chip of the ECMP link. A network switch can automatically conduct routing operation according to the state of data flow and the load timely trigger chip of the ECMP link, one link with the lightest load in ECMP members is selected each time, the link load balanced effect is achieved, the situation that delay and even packet loss are caused due to too heavy loads of a certain link and bandwidth waste caused by unbalanced link loads is avoided, implementation is simple, system cost is low, and the network bandwidth utilization rate can be greatly increased.

The invention provides a building method and a building device of a label switching path, relates to the field of communication, and can avoid bandwidth waste while a public network tunnel is protected. The method comprises the steps as follows: a first node selects a main upstream node and a backup upstream node according to a stored routing list; a first label mapping message including FEC and amain label distributed by the first node is sent to the main upstream mode, and a second label mapping message including FEC, a backup label distributed by the first node and the IP address of the first node is sent to the backup upstream node; and the first node generates and stores a first forwarding list. The method and the device provided by the invention are used for building the label switching path.

The disclosure discloses a method and a system for synchronizing an Access Stratum (AS) security algorithm. The method comprises: a control plane notifying a user plane to start a decryption exception detection when sending an Radio Resource Control (RRC) connection re-establishment message (100); the user plane performing the decryption exception detection on a service message received after the RRC connection re-establishment, and sending a decryption exception instruction to the control plane when discovering the decryption exception of the service message (101); and the control plane performs a corresponding exception process according to the decryption exception instruction (102). With the method, the exception of the AS security algorithm configured for User Equipment (UE) in the RRC connection re-establishment is discovered in time, the bandwidth waste caused by invalid data packets of an air interface is maximally avoided, and the prompt exception recovery is improved, so as to further improve the user experience before and after a handover.

The present invention discloses a communication system with a data-dependent superimposed training mechanism and a communication method thereof. The system uses a precoding module installed in front of the data-dependent superimposed training mechanism to precode data by a precoding matrix. The precoding matrix is a N×N unitary matrix, which is constructed by Q×Q precoding sub-matrix. Q is the block size N divided by the channel length. The precoding matrix can achieve full frequency diversity. Any two sets of data precoded by the precoding matrix must be different from each other, such that the receiver can effectively identify the data transmitted from the transmitter and the computational complexity of the receiver is reduced.

The invention discloses an Ethernet and multicast stream processing method based on VPLS; a configured semi-opening H-VPLS ring comprises a first semi-ring and a second semi-ring, the first semi-ring is communicated with the second semi-ring through first PE equipment, and the second semi-ring is communicated with the first semi-ring through second PE equipment; the first PE equipment proactively establishes PW connection with the second PE equipment through BFD when the failure of the first semi-ring is detected and the second semi-ring is normal; and the second PE equipment proactively establishes PW connection with the first PE equipment through BFD when the failure of the second semi-ring is detected and the first semi-ring is normal. The Ethernet and multicast stream processing method based on VPLS prevents traffic redundancy and bandwidth waste, and can well protect the business in case of single node failure.

The invention relates to a message scheduling method compatible with a virtual link and a packet switching mechanism. A network service area is divided into flow messages of a fine granularity QoS management requirement and a class message of a coarse granularity QoS management requirement which can be automatically coordinated to share a bandwidth of a network outlet node, different types of queues are used for implementing message scheduling on different types of messages, and thus the QoS requirements of different granularities is achieved. The QoS management method provided by the invention can meet the different levels and different granularities of QoS requirements of current multiple services, and is conveniently to perform QoS management extension on the new service.

The invention discloses wide area network bandwidth classification methods, devices and system. According to a method, a first provider edge obtains a message sent by a first customer edge, identifiesan application corresponding to the message, and packages a forwarding label stack corresponding to the application for the message; the forwarding label stack is issued to the first provider edge byan SDN (Software Defined Network) controller; the first provider edge forwards the message to a next hop provider edge according to a label in the forwarding label stack; and after the next hop provider edge receives the message, the next hop provider edge forwards the message according to the label in the forwarding label stack, until the message is forwarded to a second customer edge. Accordingto the methods, the devices and the system, a segmented routing and application-based policy routing combined scheme is provided, application or business-based wide area network bandwidth classification can be realized, different businesses of different customers can be forwarded according to different bandwidths or delay polices, practical business requirements of the customers are combined fully, bandwidth waste is avoided, and links are utilized fully.

The present invention proposes one kind of processor capable of aligning datan in several temporary storages across boundary and its method. There are one decoder for decoding multiple shift command; one temporary storage file with several temporary storages of N bits; one shifter to connect the first output content and the second output content in the temporary storage file serially to form one 2N bit word block, shift the 2N bit word block by w bits and output the first N bits; and one controller to set the temporary storage file according to the decoded multiple shift command, read out the content in corresponding temporary storage, and write the w bits shifted output of the shift into the temporary storage file.

The invention relates to a time shift on-demand playing method. When a user side performs a pause operation, a server continues to send a multicast data packet in a preset time slot to the user side but does not instantly stop sending multicast data, and establishes a time shift data channel, so the problem that the bandwidth is wasted due to a long-time pause of a user is avoided; after a replay operation is triggered, a temporary file stored locally is invoked, so the response is fast, the waiting does not need, and while the temporary file is played, a time shift file data packet is received; and furthermore, the playing is connected seamlessly, and the user has a better user experience.

The invention relates to the technical field of computers, in particular to a video processing method, a video processing device, an electronic equipment medium and a computer program product. The method comprises the steps of in the playing process of a current video, acquiring a preloaded video list corresponding to the video, obtaining at least one preloading parameter corresponding to the preloading strategy, and determining a target preloading configuration according to the preloading parameter and the preloading strategy, and preloading the preloaded video according to the target preloading configuration. Through the technical scheme of the embodiment of the invention, the problem that the mode of preloading the video is not flexible in the prior art can be solved.

The embodiment of the invention discloses an access information processing method. The method comprises the following steps: receiving an obtaining request sent by a terminal at present for obtaining webpage information, wherein the obtaining request carries an identifier of the current webpage information and a first request head, and the first request head carries a previous page version tag; making response to the obtaining request, and obtaining the current webpage information and the current page version tag based on the identifier of the current webpage information; if the current page version tag is different previous page version tag, judging whether the obtaining request carries a second request head, wherein the second request head is used for triggering to execute a comparison operation; if the obtaining request carries the second request head, separating the current webpage information; and obtaining feedback information based on a separation result, and sending the feedback information to the terminal, wherein the feedback information is used by the terminal to generate and display the current webpage information. The embodiment of the invention further discloses an access information processing apparatus, and a computer storage medium.

The invention discloses a high-precision time synchronization method for a satellite ground station based on an optical wireless network, and belongs to the technical fields of satellite navigation and optical wireless communication. The invention utilizes the analog transmission characteristics in the optical wireless network to realize clock synchronization, improve synchronization accuracy and network transmission bandwidth, and avoid distortion and bandwidth waste caused by digital synchronization. Taking advantage of the flexible deployment of the ROF system, it can deploy satellite ground stations in places where radio frequency signals are difficult to reach, and improve the coverage area and synchronization accuracy of the satellite navigation system. In addition, the present invention adopts a time synchronization feedback optimization strategy to form a time synchronization closed loop, which can improve the accuracy of time synchronization.