197results about How to "Improve QoS" patented technology

The present invention is directed to a call admission controller that is operable to: (a) determine at least one of (i) a bandwidth utilization level for a first path including a first link; (ii) an available bandwidth level for the first path; and (iii) one or more Quality of Service or QoS metrics for the first path; (b) compare the at least one of (i) a bandwidth utilization level; (ii) an available bandwidth level; and (iii) one or more Quality of Service or QoS metrics to one or more selected thresholds to determine whether a new live voice communication may be set up with a first selected codec; and (iii) when a new live voice communication may not be set up with the first selected codec, perform at least one of the following operations: (i) select a second different codec from among a plurality of possible codecs for the new live voice communication, wherein the second codec has a lower bit rate than the first codec; (ii) change an existing live voice communication from the first codec to the second codec; and (iii) redirect the new live voice communication from the first path to a second different path, wherein the second path does not include the first link.

The present invention is directed to a system, including apparatus and architecture, and method for providing scheduled and ad hoc voice over IP conference services having enhanced quality and reliability. The system uses an overlay network of geographically distributed conference servers working simultaneously and collaboratively to host a given conference session. Multiple conference servers simultaneously and collaboratively perform the necessary audio mixing. The voice routing path is established and controlled within the overlay network and supports conference services across different conference service providers.

The embodiment of the invention discloses a method for transmitting data in a virtual special LAN service (VPLS) network, a device and a system thereof. A main virtual link circuit PW and a ready-for-use virtual link circuit PW are arranged in the VPLS network. The method for transmitting data comprises that: when the main virtual link circuit PW transmits the data message, the forwarding of the data message by the ready-for-use virtual link circuit PW is prohibited; when the main PW goes wrong, the transmission of the data message is switched to the ready-for-use PW from the main PW, and the data message is transmitted by the ready-for-use PW. Due to the embodiment of the invention, the forming of a ring circuit between UPE and NPE which are accessed in a way of double-returning is avoided; when the main PW goes wrong, the link circuits can be switched quickly, and the convergence of the link circuits is accelerated, therefore, QoS of the VPLS network is improved.

The invention relates to wireless self organized network energy saving needed route method based on ant colony optimization. The route building includes the following steps: broadcasting state information of asking ant to search network and store in each node reverse information pheromone list; responding the anti while receiving the request and selecting one neighbor node as the next step reverse source node; building the route from the source node to destination node. The route maintenance is that energy parameter is inducted; and new route finding process will be forced to do to avoid node from dying untimely while node energy consumption is overmuch.

The particular status of a Multiple Network Interface Mobile Device (MID) is identified and particular problems associated with that status are addressed by activating different modes of operation depending upon whether the MID is stationary or in motion. In particular, when the mobile device is in motion, the multiple network interfaces are used to prevent packet loss, and when the mobile device becomes stationary, the multiple network interfaces are used to enhance bandwidth to achieve superior Quality of Service (QoS). MIDs thus are allowed to utilize multiple interfaces simultaneously for bandwidth incremental increases if the mobile device is stationary. MIDs also are allowed to utilize multiple interfaces simultaneously for packet loss recovery and smooth and seamless transitioning from one interface to another when the mobile device is in motion.

A method and system for fast transporting real-time media stream data package is based on the Real-time Transport Protocol / Real-time Transport Control Protocol of User Datagram Protocol for network nodes such as media gateway, Integrated Access Device (IAD) and multimedia terminal. The improvement of the system lies in the adding of an IP data package fast filter module, a UDP fast sending module and a policy ARP table process module based on local UDP port. The method involves: fast receiving the real-time media stream data package transmitted on the basis of RTP / RTCP protocol; fast sending the real-time media stream data package transmitted on the basis of RTP / RTCP protocol; and a policy ARP table based on UDP port and its refurbishing system.

A system is disclosed for providing a platform for optimizing traffic through a computer network having first and second distributed routing domains interconnected through a data center interconnect link. The system comprises one or more servers storing method steps to be executed by the one or more servers. The method steps comprising determining values for QoS characteristics for all routes of traffic routed from first and second routing domains to a destination network and re-rerouting packets from the first routing domain to the second routing domain through the data center interconnect link with better QoS characteristics values than the QoS characteristics values for the first routing domain.

The utility model discloses a method for realizing the synchronous and desynchronizing detection of a wireless link. The method comprising that a monitoring cycle is preset as the closest X channel transmission cycles; then the quality of the channels are monitored within the monitoring cycle, and the synchronous or the desynchronizing source language is produced, so the synchronous and the desynchronizing condition of the wireless link can be determined. The transmission channel is used within the monitoring cycle of the utility model, therefore, the channels within the monitoring cycle such as the up DPCCH or the down F-DPCH both have signals to send even if the permanent on-line users are in a long interval discontinuous sending mode, which realizes the correct monitor of the synchronous and the desynchronizing of the wireless link, achieves the purpose of monitoring the synchronous and the desynchronizing of the wireless link, guarantees the transmission quality of the wireless link, and improves the QoS for the users.

A communication band is divided into: a beacon period in which every master station transmits a beacon packet in competition with one another; a guaranteed-band period (e.g., a TDMA period or an FDMA period) in which only a specific permitted station is allowed access; and a CSMA period in which every station is allowed access in competition with one another. Each master station exchanges information of a communication band used in the guaranteed-band period, and based on the respective information, a communication band available to the master station's own communications system in the guaranteed-band period is calculated.

A system and a method for monitoring Quality of Service (QoS) in a broadband wireless network use previously designated QoS to continuously provide stable QoS to a wireless terminal in the broadband wireless network when the wireless terminal is handed off from one base station to another. In the system for monitoring QoS, a monitoring server receives and monitors QoS information in real time from base stations having synchronized time information. When a wireless terminal in a service zone of a first base station requests to be handed off to a second base station, the monitoring server determines a QoS level according to QoS information of the second base station, and then transmits the QoS level simultaneously to the first and second base stations.

The method includes following steps: in the circuit domain carried by IP of 3G communication system, adds a bearer control layer composed of bearer network control servers between the call control layer and IP bearer layer; through bearer control servers, configures the network topology of IP bearer network, and detects the resource variation in IP bearer network in real time, and selects routing strategy for traffic flow in 3G circuit domain to meet the QoS requirement, and sends down the routing strategy to the edge router in IP bearer network; the edge router labels the priority and dispatches the queue for the traffic flow matching the routing strategy, and in term of the routing strategy, makes priority forwarding for the traffic flow to guarantee the QoS of the traffic flow.

The invention discloses a heterogeneous-network access decision method based on multi-network parallel transmission. In the method, a multi-network selection problem is regarded as a multi-network convergence scheme selection problem and relative approximate degree of each candidate network convergence scheme and a positive ideal scheme is calculated and a multi-network convergence scheme capable of providing a best service quality is selected so that user throughput is improved, power consumption and cost, corresponding to a unit throughput of the user, are reduced and load balance of a network is ensured. Specific steps are as follows: any non-void subset of a set of all accessible networks of a user is used as a convergence scheme and convergence schemes which meet a threshold condition become candidate network convergence schemes. An ideal-value-approaching ranking method is adopted to calculate the relative appropriate degree of each convergence scheme and the positive ideal scheme, and the convergence scheme capable of providing the best service quality is selected as a multi-network access scheme so that multi-network parallel transmission is realized.

The embodiment of the invention provides an operation collocation method and the device thereof. The method includes: when up-load of subdistrict in which the user device UE is positioned exceeds the preplaced first load threshold, the operation on the UE uplink is collocated to the incontinuous transmission DTX first module, namely, the strict interval transmission module on the pattern outburst; when up-load of subdistrict in which the user device UE is positioned lowers the preplaced second load threshold, the operation on the UE up-link is collocated to the DTX second module, namely, the continuous transmission module of the start and end points on the pattern outburst; the operation is the seventh edition 3GPP R7 or the seventh edition 3GPP R7 above edition operationt planned by the third generation cooperation fellows, and the second load threshold is less than or equal to the first load threshold. The method and the device can make a balance of reducing the subdistrict up-load and reducing the operation up time span, thereby improving the operation QoS.

The approach for managing the topology in a MANET includes, at the network layer of a wireless mobile node, operating a link state or other routing protocol to discover routes from the at least one wireless node to other wireless nodes within the MANET. The routing protocol includes the use of a global topology database storing global network topology information. The method also includes, at the network layer, providing the global network topology information from the global topology database of the routing protocol to the MAC sublayer. Also, at the data link layer, the MAC sublayer is controlled to perform neighbor connection management based upon the global network topology information from the global topology database. The approach may provide enhanced QoS, latency and resistance to link and node failures within MANETs.

The invention provides a dynamic resource allocation algorithm of an SDN / NFV network based on load balance. In view of multimedia services of different needs, virtual link mapping objectives, constraints and physical link load states are associated, sub-tasks are adaptively mapped to network nodes according to the physical link load states, and used resources and remaining resources of physical nodes and links are effectively distinguished so as to balance the load, improve the utilization rate of network resources and avoid the occurrence of local optimum or current optimum. The scheme is asfollows: performing sub-task mapping to find a server node satisfying constraints for each sub-task in a service request, wherein a mapping model of the sub-task is described as (the formula is described in the specification); and then, performing virtual link mapping to find a physical path satisfying capacity constraints of each virtual link for each virtual link in the service request, whereina dynamic virtual mapping problem is described as (the formula is described in the specification).

Key points of the method are as following: setting up multicast proxy module in RAN; the module monitors access request including objective information from UE; when determining that the objective information designated in advance in request is objective information of data source in use for providing service of data operation, the module builds control connection to the UE; in procedure of building control connection, UE obtains information of reception attribute; receiving id of service data content from data source, the module down sends corresponding service data to UE; based on received information of attribute, UE receives service data through built transmission channel. Using multicast proxy module, the invention only needs to transmit one portion of data between data source and multicast proxy module to realize multicast of service data. Features are: fast and smooth data process, and raised use rate of network resources.

The invention discloses a multi-unmanned aerial vehicle mobile base station position deployment method, which belongs to the field of air-ground integration. The method comprises the steps of firstly,randomly distributing K ground users and K unmanned aerial vehicle mobile base stations in a two-dimensional rectangular area, and establishing spatial position models of each unmanned aerial vehicleand all ground users; establishing a channel gain of a downlink communication link from each unmanned aerial vehicle to each ground user by utilizing the spatial position model to obtain a two-dimensional distance R and an elevation angle theta between each unmanned aerial vehicle and each user; rearranging the relationship between the channel gain and the two-dimensional distance R, and calculating the longest distance between the unmanned aerial vehicle and the user served by the unmanned aerial vehicle; constructing an objective function for minimizing the number of the unmanned aerial vehicles according to the longest distance; and finally, solving a target function under the condition that constraint conditions are met, wherein the number of users in each group is close to Nmax as much as possible. One unmanned aerial vehicle is deployed in each group, so that the interference of other users is minimized while the channel gain is maximized, and the method provided by the invention has relatively good robustness.

The invention relates to a method and a device for dynamic bandwidth allocation in gigabit passive optical network, wherein the method comprises the steps: at first, predicating the bandwidth of current Alloc-ID, regarding the predication value as input speed of a token bucket; then computing DBA bandwidth required by the current Alloc-ID and comparing the DBA bandwidth with a current token number of the token bucket, if the DBA bandwidth is smaller than the token number, allocating relative bandwidth to the current Alloc-ID and writing the allocated bandwidth into a BWMAP table; and sending the BWMAP table to an optical network unit; the device comprises a T-CONT flow policy table, a flow statistic module, a DBRu table module, a bandwidth predication module, a token bucket flow control module, a bandwidth allocation module, a BWMAP table configuration module, a BWMAP table sending module and a scheduling cycle control module. The method and the device enhance the response speed for the bandwidth allocation of T-CONT.

A system of methods and constructs that enable multiple users to simultaneously share transmission (i.e., radio) resources, while reducing delay for users with delay-sensitive applications, is disclosed. The system provides for: forming one or more than one shared persistent (or “sticky”) assignment (SSA) group in a sector; allocating more than one shared sticky resource in at least one SSA group; and dividing users into at least a first class of users and a second class of users. The first class of users is given a higher priority to access the shared resources than the second class of users when the shared resources become available for a new packet. The first class of users is also given more choices of shared resources when starting transmission of a new packet.

The embodiment of the invention provides a multicore processor based flow control method and a multicore processor. In the method, a first core in the multicore processor carries out priority sorting on received messages, and sends the sorted messages to at least one middle core which is other single core except the first core in the multicore processor; and any middle core in the at lest one middle core receives the messages sent by the former single core and forwards the messages. Compared with the prior art, the message priority sorting provided by the embodiment of the invention can not only effectively prevent the congestion in mirconetworks, but also discard the message with lower priority to ensure the message with higher priority during the congestion in the micronetworks. Therefore, better QoS (Quality of Service) can be provided in the micronetworks, and further the QoS of macronetworks is further ensured.

A system of a distributed database concurrence storage virtual request mechanism comprises a client for sending storage requests, a web application server, an access control server and a distributed database cluster. Based on the system, a distributed database storage management mechanism scheme is put forward, the mechanism particularly considers the flow request required by the number of concurrence users to reasonably store the user data flow in a distributed manner, that is, under the framework of the cloud database, the user data flow is distributed to the most reasonable database cluster for storage according to the current network load and the current database concurrence connected load. The mechanism realizes management of the distributed database cluster by utilizing the access control server, and an ACK (acknowledgement character) information packet fed back by the database cluster calculates the optimized storage strategy and completes final data storage through a corresponding flexible algorithm.

A method and an apparatus for selecting a core network in a mobile communication system are disclosed. According to some aspects of the present disclosure, a method and apparatus are provided for selecting a core network which is appropriate to the type of user's subscribed service in a mobile communication system, without the need for re-routing.

The invention discloses a hierarchical edge computing unloading method based on priority. The method comprises a resource allocation and task scheduling strategy taking time delay minimization as an optimization target. On one hand, a layered edge computing framework is constructed for an emergency scene, edge nodes which are closer to user equipment and have fewer computing resources process simple tasks so as to quickly return warning information, and servers which are farther from the user equipment and have more computing resources process complex tasks so as to finally return accurate results. And on the other hand, a resource allocation and task scheduling optimization scheme based on the service emergency priority is provided for the problem that the time delay is increased due to limited resource competition, so that the total time delay of the system is minimized. A dynamic priority task scheduling algorithm (DPTSA) on a server is designed in order to ensure that the time delay of high priority tasks is still minimum under the condition that the tasks are very dense. Therefore, the user can obtain real-time response as soon as possible in case of emergency.

A network / service control method comprises a step of acquiring, when providing a communication service to a user, a user context defined as knowledge information about the user associated with an environment surrounding the user and a past behavior pattern of the user, a step of acquiring a user profile defined as information about a user's favorite registered previously by the user at arbitrary timing, and a service control step of determining network requirements for providing the communication service on the basis of the user context and the user profile.

The invention discloses a method and device for distributing the dynamic bandwidth of a passive optical network. The method comprises the steps that: an OLT (optical line terminal) obtains a bandwidth needed by a next stage of a T-CONT (transmission container) when a DBA (database administration) period reaches; the OLT judges that the needed bandwidth is less than the bandwidth distributed in the previous period and the difference between the needed bandwidth and the bandwidth distributed in the previous period is greater than a predetermined threshold; and the OLT builds a T-CONT configuration table, and the bandwidth distribution is performed according to the T-CONT configuration table. By the invention, the probability of packet loss can be reduced, and the quality of service (QoS) of operators is improved.

A method for a device to join a wireless communication network, after the device accesses to the wireless communication network group through a source node, the method comprising the following steps of: (a) if the device needs a handover, completes the handover successfully by accessing to a target node and establishes a service connection, proceeding to step (b), otherwise proceeding to step (c); (b) a management node of the wireless communication network group to which the target node accessed to by the device belongs updating a stored wireless network topology information of the wireless network group, to complete the joining of said wireless communication device, and the method ending; (c) a management node of the wireless communication network group to which the source node accessed to by the device belongs updating a stored wireless network topology information of the wireless communication network group, to complete the joining of said device.

The port rate controlling method based on service classification includes the following steps: to set port configuration list in the user side port; to read the port configuration list to obtain the service type source; to search different configuration lists based on the source to obtain the data relevant service type; to obtain limiting rate of the port corresponding service type based on rate control configuration; and to control the receiving and emitting rate based on different service type for the Ethernet frames of different service type. The present invention sets different service types for different user's requirement and controls the port receiving and emitting rate for the datan of different services to provide different service guarantee, strengthen the RPR space multiplexing characteristic, raise network service quality, reduce the equipment load and make the network service personalized and diversified.

The invention provides a method for optimizing the quality of service (QoS) of stream media, belonging to the technical field of network communication. The method is implemented mainly by respectively adopting an expandability hierarchical coding technique and a multipath routing parallel transmission method from a streaming media coding and decoding technique and the end-to-end transmission aspect. A media stream is divided into a base layer and enhancement layers including a plurality of code layers by layered coding; different priorities are given to different code layers, and the highest priority is given to the base layer; according to the characteristics of a cognitive network, the priority condition of each reachable path is reasonably judged by taking delayed data fed back to a source node by a terminal node as the basis; according to the corresponding relation of the code layers and paths which are formed according to the priority, an activation set formed by a plurality of paths is established; the parallel transmission is carried out on the data in each code layer by utilizing the valid paths, and the updating time of the activation set is controlled by adopting an AIMD (Additive Increase And Multiplicative Decrease) arithmetic. The invention has the advantage of shorter delay.

The invention provides a control method of data transmission rate. The control method of the data transmission rate includes that a streaming media server detects a QoS (quality of service) index, and judges a current network congestion state; master control delay of sending of a data package is adjusted according to the current network congestion state, and network throughput is controlled by using the master control delay. The control method of the data transmission rate is a transmission control method directed at the streaming media server limited in hardware condition, improves instantaneity and validity of streaming media transmission, effectively adjusts the transmission rate, and significantly improves QoS.