114 results about "Protocol Requirement" patented technology

A video and/or audio conferencing system having virtual meeting room services is disclosed. The virtual meeting room services enables a third party to control and manage one or more virtual meeting rooms. Each third party organization may receive one or more dial in numbers, which is associated with a profile that defines the type of the conference that can be conducted. The profile defines the “capabilities” of the virtual meeting room, such as the maximum number of conferees, type of conference, type of endpoints, transcoding and protocol requirement, etc. Each virtual meeting room may have an NID (Numerical Identification) used by the peers along with the dial-in number to join the virtual meeting room.

An adaptive analog-to-digital converter (ADC) system (100) includes an automatic gain control (AGC) controller (101) for receiving both in-band and out-of-band signals from a radio frequency (RF) receiver and producing an AGC control signal therefrom. A digital signal processor (DSP) (103) is then used for interpreting the AGC control signal and providing an adjustment signal to an ADC (105). The ADC (105) uses the adjustment signal to dynamically control efficiency of the ADC system 100 by adjusting bit resolution, reference capacitance and bias based upon the RF signal received and desired protocol requirements presented to the AGC controller (101).

A method of testing a device includes monitoring an output of the device, wherein the output is generated by the device in response to an applied test command; and resolving the output into atomic operations, wherein the atomic operations are substantially the smallest constituent operations which are substantially independent of the device. The method is used to provide a simple, comprehensive test environment that effectively tests 1394a and 1394-1995 designs, for example, in Verilog. The test environment contains rules which completely characterize the behavior of different 1394 bus protocols as defined by the IEEE specifications. The test environment provides portability between different devices under test and between different protocols, automated closed-loop reconciliation of test commands and protocol requirements, topology independence, and out-of-order execution of instructions or relative sequencing. The test environment further allows failure injection, and separate and independent design of the device and a test system.

The invention discloses a method and a system for transmitting channel feedback information, and is applied to a very high throughput (VHT) wireless local area network system. The method and the system are used for solving the problem of bandwidth selection during the channel information feedback of a receiving party and the problem of interference caused by no clear channel assessment (CCA) detection of the receiving party under the condition of an overlapping basic service set. Before a transmitting party transmits a wireless frame for requesting for the channel feedback information, at least a specified inter-frame space is required to be reserved for the CCA detection of the receiving party within the specified inter-frame space, and the receiving party performs the CCA detection before the channel feedback information is transmitted, so that a clear bandwidth in line with a protocol requirement can be selected to transmit the channel feedback information. Therefore, the problem of the interference caused by the overlapping basic service set and the problem of channel feedback bandwidth selection can be solved.

The invention includes a router and adapter enabling to receive any type of vendor Intelligent Network protocol message, then to direct the message (according to predefined rules) and ultimately, to translate one type of message into a unified format in order to meet with the destination protocol requirements and the mediating method according to the present invention enable communication between different (SSP) telephone message switching protocols and different control point system (SCP) message protocols; the method is based on conversion processes that enable identification of message definitions and information and the creation of unified message records.

A system and method to allow voice, video and data conference with minimum bandwidth consumption with endpoints in two or more geological locations. The system includes signal server to manage one or multiple media servers. The method supports transmission of only one data stream between two media servers while each media server can support multiple endpoints. The method can achieve voice/video/data quality of service (QoS) and scalability. The servers and endpoints send/receive commands and data using TCP, UDP or any proprietary protocol, depending on server's configuration and protocol requirements. This method is compatible with existing communication standards, such as H.323, SIP, MGCP, MEGACO, and T.120.

The embodiment of the invention provides a design method for a cascade filter, which comprises the following steps of: determining the interpolation times N of the filter; calculating the filter coefficient of a programmable finite impulse response (PFIR) filter, and obtaining a design scheme of a cascade combined filter of PFIR and cascaded integrator comb (CIC) filters; and when the interpolation times of the cascade combined filter of the PFIR and CIC filters does not reach the predetermined times, designing a half band (HB) filter, so that the filter performance of the cascade combined filter of the PFIR and CIC filters and the HB filter meets the interpolation times requirement of a system, and the design of the PFIR filter is realized by adopting a multistage design scheme. According to the embodiment provided by the invention, by adopting the design device for the multistage filter, the order of the designed filter is in a realizable range of the FPGA, and the indexes such as interpolation times of signals, error vector magnitude (EVM), adjacent channel power ratio (ACPR) and the like can meet the protocol requirement. Moreover, according to the technical scheme provided bythe invention, the resource consumption of the filter is also lower than that of the design method for the traditional filter, and the use of FPGA hardware resources can be effectively reduced.

Byzantine Agreement requires a set of parties in a distributed system to agree on a value even if some parties are corrupted. The invention comprises a method for achieving agreement among participating network devices in an asynchronous network is disclosed that makes use of cryptography, specifically of threshold digital signatures and a distributed coin-tossing protocol.

The invention discloses an elastic buffer structure and a method applied to universal serial bus 3.0 (USB 3.0). The elastic buffer structure comprises an input check module, a binary code and Gray code read-write pointer generation module, a synchronization module, a read-write control module, a threshold value monitoring module and an output control module. According to the protocol requirement of the USB 3.0, by means of the analysis of an action mechanism of elastic buffer, asynchronous first in first out (FIFO) which has innovative functions of writing pointer shield, point jumping, breakpoint saving and handshake, output control and the like is used for designing the elastic buffer, and the purpose of clock frequency compensation is well achieved; and according to the designed elastic buffer, parallel 40-bit data are used, the read-write clock frequency can reach 125 MHz.

A method and system for permitting a government agency or a medical research Institution to retain an independent Audit Agency to periodically audit a clinical trial testing the effect of experimental drugs on patients, being conducted by the Institution, to insure the audit conducted is in compliance with the privacy requirements of HIPAA. Prior to the audit, the Institution assembles individual electronic patient records relative to the clinical trial into an XML file in a discrete database, wherein each patient record has all personal information deleted, and such record is identified by a unique number or code assigned by the Institution. In turn, remote from the Institution, the Audit Agency transforms an appropriate search and indexing engine by adding to it libraries of text names, and synonyms, and constructs application programs containing the associated Protocol requirements and rules. The Audit Agency sends the transformed Search Engine to the Institution via the Internet or on CD's. The Institution runs the Search Engine against their database to produce a Compliance Report detailing all discrepancies found relative the Protocol course of medical treatment for each patient in the clinical trial, and sends the report to the Audit Agency. The Audit Agency processes the report to provide an Audit Report to Institution requesting comments, and if necessary, a corrective action plan.

The invention discloses a clock frequency adjusting system, a clock frequency adjusting method and a mobile terminal, belonging to the technical field of mobile communication. The system comprises a frequency monitoring unit, a judging unit and an adjusting unit, wherein the judging unit is connected to the frequency monitoring unit; and the adjusting unit is connected to the judging unit. The method comprises the following steps: S1, monitoring and obtaining a receiving frequency of a frequency point used by a currently received signal of the mobile terminal; S2, judging whether the frequency point used by the received signal of the mobile terminal is a multiplied-frequency point of a clock frequency currently used by a storage of the mobile terminal or not, and returning to the step S1 if the frequency point used by the received signal is not the multiplied-frequency point of the clock frequency currently used; and S3, selecting one preset clock frequency as the current clock frequency of the storage, and then, returning to the step S1. The technical scheme provided by the invention has the benefits that: the performance of a fixed interfered channel of the mobile terminal is improved; the problem that the radio-frequency performance of the mobile terminal is influenced due to wireless sensitivity deterioration can be avoided; furthermore, protocol requirements can be satisfied; and the clock frequency adjusting system, the clock frequency adjusting method and the mobile terminal disclosed by the invention are relatively simple to realize and relatively low in realization cost.

The present invention provides a method of obtaining the information of user equipment and a system of obtaining the information of user equipment, wherein the method comprises the steps of determining whether an international mobile subscriber identity (IMSI) of a to-be-obtained user equipment exists in a user configuration table; if yes, sending a non access stratum security mode command message which sets an encryption algorithm as a null algorithm to the to-be-obtained user equipment to thereby obtain a non access stratum signaling message of the to-be-obtained user equipment; sending an initial context setup request message which carries the security capability of the user equipment and of which the encryption algorithm is the null algorithm to an evolved NodeB to thereby enable the evolved NodeB to send the non access stratum security mode command message which sets the encryption algorithm as the null algorithm to the to-be-obtained user equipment according to the protocol requirements to obtain the user layer data of the to-be-obtained user equipment and a wireless resource control layer message. According to the present invention, by setting the user configuration table on a mobility management entity (MME), and determining whether the IMSI of the UE of which the information needs to be obtained exists in the user configuration table, the purpose of obtaining the information of the UE under a 4G network is achieved.

The invention provides a GSM neighbor measuring method and system in an LTE mode. GAPs are distributed in corresponding periods to perform GSM neighbor measuring according to the number and GAP periods of frequency points to be tested, and accordingly, the GAPs measured in GSM neighbors can be reduced correspondingly. The GAPs measured in the GSM neighbors can be increased correspondingly when the number of the frequency points to be tested is small, and accordingly, the problems that the requirements of other neighbors cannot be met and the protocol requirement cannot be met caused by the use of too many GAP by the GSMs are solved.

The invention discloses a process algebra-based real-time protocol analysis and verification system. The system comprises a mathematic modeling module, a code generation module, a simulation verification module and a verification result processing module, wherein the mathematic modeling module is used for carrying out modeling by utilizing process algebra, carrying out formalized expression on a real-time protocol, establishing a real-time protocol model and carrying out formalized expression on a protocol requirement; the code generation module is used for generating a high-level language code according to the real-time protocol model; the simulation verification module is used for carrying out simulation execution on the real-time protocol model according to a semantic meaning of a process algebra description language, and analyzing and verifying the properties satisfied by the real-time protocol model according to the formalized expressions of the rea-time protocol and of the protocol requirement output by the mathematic modeling module; and the verification result processing module is used for carrying out statistic and classification on analysis and verification results output by the simulation verification module and providing evaluation for protocol property. The system disclosed by the invention provides a protocol execution process which does not satisfy the protocol requirement, and provides integral evaluation for the protocol property, so that the efficiency of optimizing the protocols by the developers is improved.

The PCIe pressure eye diagram test calibration method comprises the steps of obtaining a loss value from a loss calibration board signal input point in a test link to a mirror image channel output point on to-be-tested equipment, and storing a channel characteristic obtained based on the loss value as an S parameter file; Performing eye diagram simulation according to the S parameter file, and using parameter values meeting PCIe bus protocol requirements in the eye diagram simulation; Adjusting parameter values in the eye diagram simulation until a pressure eye diagram result meeting PCIe busprotocol requirements is obtained, and recording the adjusted parameter values; And configuring the adjusted parameter values into an error rate tester for pressure eye diagram testing. By using the PCIe pressure eye diagram test calibration method provided by the invention, the problem of calibration failure caused by insufficient signal-to-noise ratio of an oscilloscope in the traditional calibration method can be solved, the calibration time is saved, and the calibration flexibility is enhanced.

The invention discloses a data transmission control method and a controller for a USB (universal serial bus) low-speed device. The method comprises the following steps of detecting a D+ signal line and a D- signal line of the USB low-speed device at the beginning of transmission, and pulling up the D+ signal line if the D+ signal line and the D- signal line are in an idle state; after the D+ signal line is pulled down on a host side, causing the host side to directly enter a reset state, and pulling up the D+ signal line; after the host side is reset, controlling a data transmission channel EP to perform data transmission with the host side, and setting the D+ signal line and the D- signal line to be in the idle state after the transmission is finished. According to the technical scheme, a conventional USB device compatible with USB low speed only supports a USB low-speed device function, the area of the controller is reduced by 50 percent, and interface communication transmission between physical layers and channel detection handshaking during the transmission are accurately realized according to USB protocol requirements.

The invention discloses a method for supporting simultaneous multipath plug flow by live broadcast software. By modifying source code of Open Broadcaster Software, relevant code for supporting multipath live broadcast is added; a partial interface is modified for a user to configure the relevant information of the multipath live broadcast; finally, during the live broadcast, the same video encoderand the coded code flow are multiplexed; then, audio coding data with different live broadcast protocol requirements is integrated; the multipath live broadcast can be completed. The real-time live broadcast content can be pushed to different live broadcast platforms in real time; multipath flow of different protocols can be supported; the consumption of software on a memory and a CPU resource can also be effectively reduced; the development cost is reduced; the subsequent upgrading and maintenance are easy.

The invention discloses a chip-level method and device for realizing Ethernet OAM (Operation, Administration and Maintenance) frame delay measurement. A clock module is arranged in a chip, and an in-direction OAM processing module and an out-direction OAM processing module are respectively arranged at an in-direction port and an out-direction port of network equipment. The clock module regularly sends time stamps to MAC (Multi-Access Computer) of the network equipment, the in-direction OAM processing module and the out-direction OAM processing module. When an Up MEP (Maintenance End Point) is mounted on the out-direction port to receive a DM (Data Management) message, clock information is obtained from the out-direction OAM processing module. When the Up MEP is mounted on the in-direction port to send the DM message, the clock information is obtained from the in-direction OAM processing module. Therefore, when the frame delay of the inward MEP is measured, the delay on a forward module is also brought into the measurement range, so that the measurement of the inward MEP frame delay is more precise and more conforms to the protocol requirements.

The invention discloses a data transmission encoding and decoding method and system based on a Beidou short message. The method comprises the following steps: encoding data by adopting an ASCII code in a manner of an identification code + a function code + original data; sending the final data in an ASCII code form according to the civil protocol requirement of the Beidou short message; when data decoding is carried out, judging a common Beidou short message or short message content conforming to the method through the identification code, if the common Beidou short message or the short message content conforming to the method is the short message content conforming to the method, reading the function code, and parsing corresponding original data according to the function code. According to the method, the transmission of the general Byte array data is realized, the data exceeding the limited length can be segmented and packaged due to the civil protocol limitation requirement, the method has the characteristics of simplicity in realization, large transmission quantity, code stream saving and the like, and the resources of the Beidou short message can be utilized to the maximum extent, so that higher efficiency is obtained in practical application.

The invention belongs to the technical field of mobile communication, and particularly relates to a five-window joint timing advance estimation calibration method which comprises the following steps:acquiring a signal in a PRACH preamble format 2 in 5G; dividing the signal into five windows and numbering the five windows; caryring out zero filling on the front of the data of the window 5, so as to enable the sequence lengths of the five windows are 24576K; detecting the leader sequence of the window 1, and recording the detected leader sequence and TA; by utilizing the fact that the leader sequence detected by the window 1 is related to the leader sequence of the window 2, recording the leader sequence number of the window 2, wherein the detection methods of the windows 3-5 are the same as the detection method of the window 2; acquiring detection results of the five windows, and performing five-window joint timing advance estimation on the detection results. According to the method, the detection window is divided into five windows, so that the problem that the TA estimation cannot meet the 5G protocol requirement due to the fact that the time delay exceeds the CP length is solved.

The invention discloses a multi-core processor Cache consistency simulation verification method and device, and the method comprises the steps: configuring a verification environment and verificationexcitation, and carrying out the excitation test in the verification environment; and performing coverage rate collection and performance statistics after the excitation test is completed, and judgingwhether the system performs correct state migration according to protocol requirements or not through global protocol correctness check. The verification device is constructed based on the verification method. The method has the advantages of simple principle, simple operation, good verification effect and the like.