194results 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 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 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 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 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.

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.

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.