45results about How to "Lower end-to-end latency" patented technology

Decoder retrieval timing information, ROI information and tile identification information are conveyed within a video data stream at a level which allows for an easy access by network entities such as MANEs or decoder. In order to reach such a level, information of such types are conveyed within a video data stream by way of packets interspersed into packets of access units of a video data stream. In accordance with an embodiment, the interspersed packets are of a removable packet type, i.e. the removal of these interspersed packets maintains the decoder's ability to completely recover the video content conveyed via the video data stream.

Disclosed is a method for a hybrid service discovery adapting between push-based and pull-based schemes in a mobile ad-hoc network and a system thereof. The method includes periodically transmitting a first control packet for providing service information from a service provider that is capable of providing a service to nodes located in a specified advertisement zone, transmitting a second control packet requesting the service from a service demander to one or more nodes in a network, and transmitting a third control packet including path information of the service provider if at least one of the nodes located within the advertisement zone and the service provider receives the second control packet. The method and the system can reduce the amount of control packet transmission and minimize an end-to-end delay.

A method, a chipset, a receiver, a transmitter, an electronic device and a system for enabling a control of jitter management of an audio signal is described, wherein the audio signal is distributed to a sequence of frames that are received via a packet switched network, the received frames comprising active audio frames and non-active audio frames, wherein a concatenation of subsequent active audio frames represents an active audio burst, wherein a discrete information of audio activity of the audio signal via the packet switched network is received, the end of an active audio burst is determined based on the received discrete information of audio activity, and wherein jitter compensation of the received frames is controlled on the basis of the determined end of an active audio burst. The invention further relates to a corresponding software program product storing a software code for controlling jitter management of an audio signal.

A wireless communication system including a gateway device that connects a core network and a wireless access network. The wireless access network includes a virtual base station that includes a representative base station connected to the gateway device and a plurality of unrepresentative base stations, which are subordinate to the representative base station. The presence of the unrepresentative base stations is hidden from the gateway device and an adjacent base station.

The invention provides a route selection method of minimum hop count based on interference sensing in a wireless D2D network. The method comprises the steps that (1) the emitting power of a D2D node is limited; (2) the highest transmission speed of each hop is computed, and a route optimization model of minimization route hop count is established; and (3) according to an MR-DA algorithm, a route from a source node to a target node is established hop by hop. Under the premise that cellular user communication quality and D2D transmission speed are guaranteed, the route with low hop count is established. By inspecting the highest transmission speed of a candidate node and the target node and the position relation of the candidate node, a current node and the target node, geographical location information and interference control are considered comprehensively, so that the generated router is close to the target node and far away from the base station at the same time, interference on cellular communication is lowered, and the transmission capacity of each hop is increased. Theoretical analysis and simulation results show that the method has the advantages that complexity is low, average hop count is low, and disconnecting probability is low.

An augmented reality device computationally processes an image frame against a first augmented reality profile stored in a local database. The first augmented reality profile includes first annotation content associated with a first object and is obtained from a second user device. In response to an object computationally processed from the first image frame satisfying a predetermined threshold of similarity with the first object in the first augmented reality profile, the first annotation content is rendered, on a display of the first user device, relative to the first object according to rendering instructions for the first annotation content.

The invention provides an enhanced neighbor information-based multi-hop broadcast protocol (ENIMBP) in a highway scene. A optimal transmitting vehicle is selected by combining neighbor information of vehicles with positions, steering speeds and directions of the vehicles to determine transmitting waiting time. According to the positions of the vehicles, the ENIMBP can initially determine the transmitting waiting time of the vehicles different in distance from a broadcast vehicle. Under the condition of same distance between the vehicles and the broadcast vehicle, the ENIMBP differentiates the transmitting waiting time by means of speeds and directions of the vehicles. The ENIMBP solves the network partitioning problem and node hiding/exposing problem in the highway scene. Simulation results show that the end-to-end delay can be remarkably reduced in a sparse network, and meanwhile, a very high packet arrival rate is maintained. As the speeds and directions of the vehicles are introduced, the transmitting waiting time of the vehicles with same distance can be differentiated, and under the scene of great vehicle density, the high packet arrival rate can be further maintained.

The invention provides a data processing method for a database, and the method comprises the steps: carrying out the analysis of received streaming increment real-time data transmitted by an upstreamsystem, so as to obtain first to-be-processed data which comprises a specified primary key field; obtaining first processed data from a memory database, the first processed data including a specifiedprimary key field; comparing the first to-be-processed data with the first processed data to determine whether first effective to-be-processed data exists or not; under the condition that it is determined that the first effective to-be-processed data exists, determining a first transaction operation based on the first effective to-be-processed data; and executing the first transaction operation toobtain a first updated memory database. The invention further provides a data processing system for the database, electronic equipment and a medium.

A method of searching encrypted files includes a client computing device selecting a specific keyword to search a plurality of encrypted files stored at a server computing device and if the specific keyword has not been previously used to search the plurality of encrypted files, the method further includes using an encrypted keyword index stored at the server computing device to identify one or more encrypted files of the plurality of encrypted files that contain the specific keyword based upon keyword-file relationships stored in the encrypted keyword index. The method also includes, storing the keyword-file relationship for each of the one or more encrypted files that are identified as containing the specific keyword in an encrypted dictionary at the server and during a subsequent search, if the specific keyword has previously been used to search the plurality of encrypted files, the method includes using the encrypted dictionary and the encrypted keyword index stored at the server to identify one or more encrypted files of the plurality of encrypted files that contain the specific keyword based upon the keyword-file relationships for the specific keyword previously stored in the encrypted dictionary.

The invention discloses a method for reducing time delay and energy consumption in a dense wireless sensor network. The method comprises the following steps: according to the number of nodes in a forwarding set of a sender and the influence of the duty ratio of node work on delay; under the condition that the duty ratio of the nodes is not changed, the number of candidate nodes of a sender in thedense network is reduced, one-hop delay is reduced, and collision caused by simultaneous awakening of a plurality of candidate relay nodes is reduced, so that the data load capacity of the network isreduced, and the energy consumption of the network is reduced. And since the sending node selects the node closer to the convergence center as the relay node, the one-hop forward distance is increased, the hop count is reduced, and the end-to-end delay is reduced.

The invention discloses a method for multi-objective optimization opportunistic routing of an underwater sensor network, and the method comprises the following steps: 1), defining a multi-objective optimization opportunistic routing MOO-BA; (2) initializing an beacon, (3) carrying out dynamic life estimation DLE, (4) initializing a path, (5) carrying out group optimization problem solving, and (6)carrying out improved BA path optimization. The method can prevent the same node from consuming energy due to frequent data forwarding, achieve the purpose of energy consumption balance, prolong thenetwork life cycle, reduce end-to-end delay and improve the effective data packet transmission amount.

A vehicle networking information delay transmission method based on MSPA algorithm belongs to the field of automobile mobile internet, and is to solve the problem that the present information transmission cannot aim at a network disconnection-connection condition. The process comprises the following steps of: producing an original relay node; broadcasting an information packet by using the relay node; and once playing the information packet at every step of 2R distance. When the relay node queries running in the same direction into itself transmitting coil inner vehicle node, a speed that the transmitting coil inner vehicle node bears off the transmitting coil is updated and calculated, thereby selecting the vehicle node of the minimum speed as the subsequent same-direction relay node. Firstly, the information packet is broadcasted once, and then an authority packet is sent to the subsequent same-direction relay node. When the relay node queries to the reverse direction vehicle node and a flag bit in the information packet is zero, the relay node changes the flag bit in the information packet to 1, and the information packet is broadcasted once, and then the authority packet according to the positive direction rule in the reverse direction is sent to the subsequent reverse direction relay node. The vehicle networking information delay transmission method is used for vehicle networking transmission information under the state of network disconnection-connection.

A packet delivery method for packet radio networks. The method used to deliver packets between a first mobile station and a second mobile station in a packet radio network is characterized by, when the first mobile station has a plurality of data packets to the second mobile station, establishing a delivery path from the first mobile station (MS) to the second mobile station (MS) through a first base station system (BSS), a first Serving GPRS Support Node (SGSN), a second Serving GPRS Support Node (SGSN) and a second base station system (BSS); and when the second mobile station has a plurality of data packets to the first mobile station, the delivery path is established from the second mobile station (MS) to the first mobile station (MS) through the second base station system (BSS), the second Serving GPRS Support Node (SGSN), the first Serving GPRS Support Node (SGSN) and the first base station system (BSS).

According to the self-adaptive probability forwarding routing protocol of the underwater acoustic sensor network, the greedy progress is maximized, the efficiency of the forwarding set selection method is improved, the result of efficiently forwarding data packets is finally achieved, and it can be seen from the result that the proposed protocol maintains low energy consumption. The method is suitable for a sparse and topology-variable underwater network environment. The method comprises the following steps: firstly, dividing a forwarding region into a forwarding region and a non-forwarding region; compared with existing opportunistic routing transmission, the method has the advantages that waiting time is saved, end-to-end delay is greatly reduced, candidate set node selection is consistent, node selection fairness is guaranteed, an APFP protocol is achieved through NS2, simulation verification is conducted on the APFP protocol, and the method has obvious advantages.