900 results about "Transmission bandwidth" patented technology

Adaptive bandwidth allocation for Non-Reserved traffic over high speed transmission links of a digital network is operated through regulation of data packet transfers over network nodes/ports including input/output adapters connected through a switching device. A network node is assigned with a Control Point computing devise (CP) storing a Topology Data Base containing an image of the network. This Data Base is periodically and at call set up updated by Topology Data Base Update messages (TDUs) including an Explicit Rate parameter for link l indicating the current available bandwidth on link l, and a parameter NNRl indicating the number of Non-Reserved connections on link l. This information are used within each Adapter to periodically regulate the transmission bandwidth assigned to each Non-Reserved traffic connection within the network. To that end, each adapter is provided with an Access Control Function device for each attached connection (data source) and a Connection Agent (CA) getting, on request, required current link informations from the attached Topology Data Base.

A bandwidth allocation method for an uplink data transmission between a mobile subscriber station and a base station in a broadband wireless access communication system. The method includes inserting type information of a service requested by the mobile subscriber station into the access channel signal and transmitting the access channel signal to the base station, receiving uplink scheduling information according to the type of the service requested by the mobile subscriber station from the base station, and transmitting data using a transmission bandwidth allocated according to the uplink scheduling information.

The invention discloses a self-adaptive transmission method and a self-adaptive transmission system in the uplink cellular video communication of the wireless multimedia communication technical field. The method is that: a feedback-based channel effectively transmits bandwidth perceiving; the sending speed of a data flow is adjusted according to the perceived effective transmission bandwidth, the adjustment of the sending rate is realized by changing the packet length of the data flow; two-stage information resource rate control based on cache cleaning and rate control of an encoder is used. The device comprises a sending end, a transmission network and a receiving end, wherein the sending end comprises a video encoding unit and a transmission control unit, the receiving end comprises a transmission control unit and a video decoding unit, the sending end and the receiving end transmit messages through the transmission network. The sending rate of the invention can automatically adapt to the change of the channel bandwidth, decreases the probability of packet loss caused by the fluctuation of the wireless channel bandwidth, and realizes that the customer side can obtain the best possible playing quality under the condition of constant change of network operation conditions.

System(s) and method(s) that facilitate utilizing pre-cached disk space. Pre-cached memory space within a storage device is identified, and a subset of the pre-cached memory space is pre-populated with data so that the data can be selectively and dynamically accessed. During use of a computer (e.g., in a web-browsing session) a subset of the pre-stored data can be dynamically and selectively exposed to the user as a function of user and/or computer application state. Pre-storage of the data on pre-cached memory of the computer mitigates delayed data access (e.g., due to insufficient transmission bandwidth) thereby enhancing user computing experience. The user can utilize the device without having to distinguish between pre-cached and free memory. In other words, the operating system can present the cached memory to the user so that it appears as free memory without the user having to direct the system to do so.

A system and method for reducing storage and transmission bandwidth requirements of a portable image capture device capable of establishing a communications connection on a network are disclosed. The method includes assigning an image identifier to captured images uploaded to a server on a network, wherein each of the images is stored in an image file having a particular size. The size of each of the image files corresponding to the uploaded images on the image capture device may then be reduced, thereby reducing storage requirements. In response to a user request to apply an action to one of the uploaded images, only the image identifier of the image and the requested action are transmitted to the server, thereby eliminating the need to retransmit the image and reducing transmission bandwidth requirements.

The invention provides an adaptive frequency hopping spread-spectrum (FHSS) transmission system and method, which efficiently utilizes available transmission bandwidth, whilst providing robustness to jamming techniques in wireless communication systems. The proposed technique operates by transmitting a wide-band signal over multiple, single-carrier, parallel transmission subbands, which may occupy non-contiguous frequency regions. The proposed scheme exhibits significant gain in error rate performance, as compared to a data rate equivalent single-subband system in the presence of signal jamming and/or interference without a reduction in the transmission data rate nor an increase in transmitter power. In addition, the proposed system and method are adaptive and enable more efficient use of the available bandwidth for communicating, thus increasing the overall bandwidth utilization of the system.

A transmission terminal measures an error rate by periodically transmitting an error rate measuring packet to all transmission channels and all transmission paths. Content to be transmitted is classified, so that a transmission channel of the best transmission quality is assigned to content requiring real-timeness and a wide transmission bandwidth. According to the type of the content, a required communication protocol is selected to perform processing thereof. The transmission bandwidth for the content requiring a wide transmission bandwidth is assigned at a peak rate, while the transmission bandwidth for the content requiring a narrow transmission bandwidth is assigned at an average rate.

The invention provides a method and a device, a first interchanger receives an ARP response from an SDN controller, the ARP response carries an MAC address of a destination gateway, the first interchanger acquires a VTEP message corresponding to the MAC address of the destination gateway in dependence on the MAC address of the destination gateway, and a router corresponding to the VTEP message is arranged in a first data center; the first interchanger sends an IP message to the router corresponding to the VTEP message in dependence on the VTEP message, and therefore the router corresponding to the VTEP message sends the IP message to a second virtual machine through the router and a channel of a second interchanger. Therefore, the SDN controller answers instead, the transmission bandwidth occupied by broadcasting messages is reduced, and the messages only pass through the router in the first data center, and the messages are prevented from detouring among data centers.

Disclosed are a server system for performing moving picture data communication with a client device over a wireless network, and an operating method thereof. A server device compresses the moving picture data received from an external medium at a variably controlled compression rate according to transmission bandwidth of the current wireless network and an image quality level set by a user in response to a request of the client device. Moreover, the server device transmits the compressed moving picture data to the client device in a wireless fashion. Therefore, transmission delay and playback delay can be avoided and data loss is avoided during a data transmission operation, such that stable data communication can be performed.

The invention discloses an audio/video file playing method and system as well as a transmission control device. The audio/video file playing method comprises the following steps of: compressing and coding an audio/video file into a plurality of audio/video stream data according to different code rates; partitioning each audio/video stream datum into audio/video file slices according to same time segments and generating an index file; acquiring terminal transmission bandwidth data, selecting the audio/video file slices adapting to terminal transmission bandwidth according to the index file and sending the audio/video file slices to a terminal to be played. By adopting the technical scheme provided by the invention, the problem of unsmooth playing brought by network bandwidth fluctuation in the audio/video playing process is solved, and the experience of a user in the process of watching audio/video programs is improved.

A system and method for effectively encoding and decoding electronic information includes an encoding system with a tiling module that initially divides source image data into data tiles. A frame differencing module then outputs only altered data tiles to various processing modules that convert the altered data tiles into corresponding tile components. A quantizer performs a compression procedure upon the tile components to generate compressed data according to an adjustable quantization parameter. An adaptive entropy selector then selects one of a plurality of available entropy encoders to most effectively perform an entropy encoding procedure to thereby produce encoded data. The entropy encoder may also utilize a feedback loop to adjust the quantization parameter in light of current transmission bandwidth characteristics.

To address the need for a resource allocation scheme that results in a better tradeoff between the cell-edge performance and the overall spectral efficiency, a communication system is provided that allocates uplink transmit power to user equipment (UEs) based on a fractional power control scheme. In another embodiment, since the cell-edge users are also likely to be power limited, the communication system may implement a minimized uplink transmission bandwidth resource allocation scheme that may work with the fractional power control scheme to achieve a level of performance desired for uplink transmissions in 3GPP (Third Generation Partnership Project) and 3GPP2 Evolution communication systems.

The invention provides an adaptive frequency hopping spread-spectrum (FHSS) transmission system and method, which efficiently utilizes available transmission bandwidth, whilst providing robustness to jamming techniques in wireless communication systems. The proposed technique operates by transmitting a wide-band signal over multiple, single-carrier, parallel transmission subbands, which may occupy non-contiguous frequency regions. The proposed scheme exhibits significant gain in error rate performance, as compared to a data rate equivalent single-subband system in the presence of signal jamming and/or interference without a reduction in the transmission data rate nor an increase in transmitter power. In addition, the proposed system and method are adaptive and enable more efficient use of the available bandwidth for communicating, thus increasing the overall bandwidth utilization of the system.

Methods and apparatuses for configuring and transmitting Reference Signals (RS) accompanying data signals from User Equipments (UEs), such that Sounding Reference Signals (SRS) are transmitted from some UEs over a part of a possible transmission bandwidth, with or without the use of SRS bandwidth hopping.

A method and system in a wireless communications network for the simultaneous transmission of voice and non-voice data over a single dedicated radio frequency channel to a mobile unit having a primary transmission bandwidth. Initially, voice data are transmitted to a mobile unit via a primary time interval within a single dedicated radio frequency channel. An unoccupied secondary time interval available to the mobile unit is then identified. Thereafter, non-voice data are transmitted to the mobile unit via the secondary time interval, in response to identifying the secondary time interval. The primary transmission bandwidth of the mobile unit is next automatically broadened to encompass both the primary time interval and the secondary time interval. Finally, the primary time interval and the secondary time interval are linked within the single dedicated radio frequency channel to permit the subsequent processing of the voice and non-voice data as a single transmitted unit over the single dedicated radio frequency channel. In identifying an unoccupied secondary time interval available to the mobile unit, time intervals positioned adjacent the primary time interval are examined to determine occupancy. If an adjacent time interval is determined to be occupied, the call being processed within that adjacent time interval is handed off to another channel or mobile unit, leaving that adjacent time interval open and unoccupied. The non-voice data is then transmitted to the mobile unit via the adjacent time interval, such that the adjacent time interval comprises an identified secondary time interval available to the mobile unit. The wireless communications network may be composed of a cellular telephone network operating alone or in association with landline-based components.

In an exemplary embodiment, a computer-implemented method determines a set of mesh polygons or fragments of the mesh polygons visible from a navigation cell. The method includes determining a composite view frustum containing predetermined view frusta and determining mesh polygons contained in the composite view frustum. The method includes determining at least one supporting polygon between the navigation cell and the contained mesh polygons. The method further includes constructing at least one wedge from the at least one supporting polygon, the at least one wedge extending away from the navigation cell beyond at least the contained mesh polygons. The method includes determining one or more intersections of the at least one wedge with the contained mesh polygons. The method also includes determining the set of the contained mesh polygons or fragments of the contained mesh polygons visible from the navigation cell using the determined one or more intersections.

Restorable paths in an information network are established in response to arriving traffic requests. Requests are received at a first node of the network for transmission of traffic to a second node of the network, and each request specifies a desired transmission bandwidth for an active and a backup path to be established between the nodes. Potential active links for an active path are identified in response to a given request, and potential backup links to form a backup path for restoring the active path, are also identified in response to the given request. An active and a backup path are then formulated for each given request from among the potential active links and the potential backup links that were identified in response to the given request.

The present invention relates to a wired/wireless broadcasting distribution apparatus having a home broadcasting distribution function and a broadcasting channel formation/termination method using the same. A wired/wireless broadcasting distribution apparatus according the present invention receives HD-grade multi-channel ground wave/satellite/cable broadcasting signals, and converts the received broadcasting signals into an IEEE1394 Isochronous packet or converts the IEEE1394 Isochronous packet into a UWB wireless signal, and transmits the IEEE1394 Isochronous packet or the UWB wireless signal to a home client, thereby making it possible to distribute HD-grade multi-channel wired/wireless broadcasting signals requiring a transmission bandwidth of hundreds Mbps to home clients irrespective of place.

When a packet arrives at a shaping unit 500, a discard control unit 510 judges whether to “store” or “discard” the arrived packet. Packets judged to be “stored” are stored into a packet storage FIFO buffer 520 and sent out within a transmission bandwidth greater than the total sum of user-by-user minimum bandwidths. A bandwidth check unit 600 checks bandwidth per user and judges packets that fall within the bandwidth to be high priority packets and packets that fall outside the bandwidth to be low priority packets. If a large quantity of packets are stored into the packet storage FIFO buffer 520, the discard control unit 510 determines that low priority packets are exclusively “discarded,” thus securing high priority packets from being discarded. Thereby, the shaping unit 500 ensures proper packet transmission within user-specific minimum bandwidth.

The present invention is a method and apparatus for compressing and decompressing data. In particular, the present invention provides for (de-)compressing naturalistic color-image and moving-image data, including high-precision and high-definition formats, with zero information loss, one-sample latency and in faster than real time on common computing platforms, resulting in doubled transmission, storage, and playback speed and doubled transmission bandwidth and storage capacity, and hence in doubled throughput for non-CPU-bound image-editing tasks in comparison with uncompressed formats. The present invention uses a nearly symmetrical compression-decompression scheme that provides temporal, spatial, and spectral compression, using a reversible condensing/decondensing filter, context reducer, and encoder/decoder. In the preferred embodiment of the invention, the compression filter is implemented as a cascade of quasilinear feedforward filters, with temporal, multidimensional spatial, and spectral stages, where appropriate, in that order, whose support consists of adjacent causal samples of the respective image. The decompressor cascades quasilinear feedback inverse filters in the reverse order. The filters can be implemented with mere integer addition, subtraction, and either one-dimensional table lookup or constant multiplication and binary shifting, depending on the computing environment Tables permit the data precision to be constrained throughout to that of the image samples. The encoder uses a table of prefix codes roughly inversely proportional in length to their probability, while the decoder uses chunked decode tables for accelerated lookup. In the fastest and simplest mode, the code tables are context-independent. For greater power, at the cost of a reduction in speed, the code tables are based on the temporal, multidimensional spatial, and spectral adjacent causal residue samples, where contexts with similar probability distributions are incoherently collapsed by a context reducer using one-dimensional lookup tables followed by implicitly multidimensional lookup tables, to minimize the overall table size. The invention's minimal resource requirements makes it ideal for implementation in either hardware or software.

A computer network such as the internet has servers to deliver pages of data to remote users upon demand, and these pages usually contain links to further pages. The request for data is in the form of a page address sent by the user, identifying a specific page, usually by a "URL". The server has the ability to generate context-sensitive information about delivery of this page, including current loading at the server, transmission bandwidth for the server, and size of the data requested. The server can calculate the time needed to transfer the requested data, and send this information to the client. The user can then decide the transfer method desired, based on the information sent by the server. For example, the user may want immediate transfer, or delayed transfer, or may want to abort the request. The requested page may be sent later by email. The server may send this context-sensitive information for all of the links on a page, and the user station may display the information for a link when it is clicked, in one embodiment. In this manner, receipt of information can be selective, based on user's needs and network delays.

The invention discloses a method and device for transmitting bandwidth information, which are used for transmitting bandwidth information in a CoMP system. The method comprises the steps: a base station determines a transmission bandwidth based on the condition that UE is needed to obtain downlink data or reference signals of the bandwidth information in a plurality of cells; the base station sends the determined indication information of the transmission bandwidth corresponding to the corresponding downlink data or reference signals to the UE; and the base station determines physical resources required to be occupied by the reference signals and sequences of the reference signals according to the transmission bandwidth determined aiming at the reference signals, transmits the sequences of the reference signals on the physical resources, or the base station determines physical resources occupied by the downlink data according to the transmission bandwidth determined aiming at the downlink data, sends indication information of the physical resources to the UE and then transmits the downlink data on the physical resources.

The invention belongs to the technical field of artificial intelligence and in particular to a method and system for the quantitative training of convolutional neural network (CNN) weight parameters.The CNN includes a convolution layer, a normalization layer, a scaling layer, a full connection layer, and a pooling layer. The method includes: updating the scaling layer according to a weight parameter of the normalization layer; removing the normalization layer; quantizing a weight parameter of the scaling layer by using an exponential quantization method; adjusting a weight parameter of the convolution layer according to a quantization process of the weight parameter of the scaling layer; and quantizing the weight parameter of the convolution layer by using a group recursive method; updating the weight parameter of the convolution layer according to the weight parameter of the scaling layer; and removing the scaling layer. Without a decrease in network precision, method and system greatly reduce network computing complexity, the storage capacity and the transmission bandwidth of the weight parameters, and achieve hardware implementation without multipliers so as to achieve fast calculation acceleration..

The invention discloses a processing method, device and system of mass log information. A client end is used for filtering collected newly-increased log information, the transmission bandwidth occupied by invalid log information can be reduced when the log information is transmitted, the log information with high real-time performance is transmitted to a server in real time, the log information with low real-time performance is delayed to be transmitted to the server, and the collecting cycle of the log information can be effectively shortened. The logic server transmits warning log information to a warning processing device timely, the demand for timely outputting the warning information in the log information can be met, non-warning log information is stored to different storage positions, the types of the log information correspond to the operation types of operation to the log information, so that in the process that a log operation platform conducts operation on the log information, the storage positions of the log information can be judged according to the operation types, the processing time of log data operation can be quickly and effectively shortened, and the processing efficiency is improved.

The invention discloses an image signal processing method for interactive multi-viewpoint video system, coding and storing multi-viewpoint video signal code streams and complete disparity field code streams between related viewpoints, obtained in different forecasting modes, and using fedback user end viewpoint selection information and display unit type information to properly select a viewpoint (used for single eye display) or two viewpoints (used for 3D display) or at most four viewpoints (used for 3D display of two virtual viewpoints) from the viewpoint-resolvable structural code streams, so as to implement partial transmission of multi-viewpoint video signals and reducing system's requirements for transmission bandwidth and requirements for user end system complexity, making it able to transmit more programs and service more users in the given network bandwidth and making the cost of a digital interactive multi-viewpoint TV receiver be lower.

A communication terminal which sets a communication session between a plurality of communication terminals through a network to perform data transmission and reception includes a measuring unit which measures round-trip delay time (RTT) or one-way delay time between the communication terminals for performing transmission and reception on the basis of the received acknowledgement, a reception bandwidth measuring unit which measures a reception bandwidth in a reception terminal of the communication terminals on the basis of the received acknowledgement, a correcting unit which corrects a value of the round-trip delay time or the one-way delay time by using at least the reception bandwidth, and a transmission bandwidth determining unit which determines a transmission bandwidth on the basis of the value of the corrected round-trip delay time or the corrected one-way delay time.

The invention provides a scalable video coding method where a region of interest has transmission priority. In the method, the region of interest is treated with default setting or optionally chosen by a user at a receiving terminal during coding. The bit stream of an enhancement layer is treated in different manners according to the fact that whether an instruction is received from the region of interest (ROI) when the instruction is sent. If the instruction from the ROI is not received, the encoded bit stream is packed according to a preset order and an obtained channel bandwidth; if the instruction from the ROI is received, a coding and recoding module recodes after coding according to the position and the size of the region of interest and has the transmission priority so as to ensure that the region of interest of the user at the receiving terminal is more clear to improve the subjective quality of the video. When an encoded video streaming media is transmitted or a quasi-real-time video is transmitted by the scalable video coding method of the invention, the user at the receiving terminal can optionally choose the region of interest and the video effect of the region of interest can be greatly improved, therefore, not only precious transmission bandwidth resources is saved, but also the subjective quality of the video is improved.

The RF communications system of the present invention wirelessly communicates data without encountering undue interference problems with other devices and complies with rules governing unlicensed, spectrum-sharing devices. In an example embodiment, a transmitter device includes a digital subsystem powered by a power supply that processes data from another device and a radio frequency (RF) sub-system that transmits the processed data using a frequency hopping scheme. The RF sub-system includes a microprocessor arrangement that ON-OFF keys a voltage controlled oscillator (VCO) and provides a frequency-hopping scheme. The VCO is coupled to a signal frequency spreading arrangement that spreads the signal to a predetermined transmission bandwidth, wherein the frequency spreading occurs during an ON state of the ON-OFF keying and the transmission bandwidth exceeds a reception bandwidth at which the signal will be decoded.

In order to efficiently utilize the limited transmission bandwidth of a communications network, e.g., a cable network, guide data for constructing an interactive program guide (IPG) is delivered to a set-top terminal using different methodologies. For example, the guide data associated with those programs which are likely of interest to a user is automatically provided piecemeal in a broadcast stream. The set-top terminal, along with other terminals, may retrieve from such a broadcast stream some or all of the guide data therein over time, which is cached in the terminal in anticipation of a user's invocation of an IPG. On the other hand, the guide data associated with those programs which are less likely of interest to a user is furnished upon request by the set-top terminal needing such guide data to realize an IPG desired by the user. In addition, guide data for each program may be divided into detail guide data providing details of the program (e.g., a synopsis of the program content), and grid guide data providing basic information about the program (e.g., title, channel and broadcast time). A first time window and a second time window may be defined such that the grid guide data associated with those programs broadcast within the first time window and the detail guide data associated with those programs broadcast within the second time window are automatically provided in the broadcast stream. The rest of the detail and grid guide data may be furnished upon request when needed.

The invention belongs to the technical field of network transmission and particularly relates to a multilink self-adaptation data transmission method and system. The method comprises the steps of: initially detecting the bandwidth value of each link, and dynamically detecting and regulating the bandwidth of each link by using 90% of a theoretical bandwidth value as the actual data transmission rate of each link. The system comprises a network transmission quality detecting module, a link transmission bandwidth regulating module and a data shunting module, wherein the network transmission quality detecting module is used for dynamically detecting the states of a network; the link transmission bandwidth regulating module is used for regulating the real-time transmission bandwidth value of each link according to positive correlation and network transmission quality; and the data shunting module is used for determining packet transmission links to a client side according to information in different packets. By means of the method and the system provided by the invention, the link resources of a user can be sufficiently utilized to provide higher bandwidth for the user, meanwhile, the detection and the regulation of the bandwidth of each link ensure that higher bandwidth utilization rate can be achieved. The invention truly realizes multilink bandwidth fusion.