35results about How to "Simple protocol" patented technology

A method for establishing and maintaining the network and a corresponding ad-hoc moving-device to moving-device network having a plurality of moving-devices grouped into a Local Peer Group (LPG) is disclosed. A group header node (GH) is selected from the plurality of moving wireless devices in the LPG. The GH controls and manages the LPG by broadcasting a plurality of control messages, including a heartbeat message at a fixed interval. The LPG also includes at least one group node (GN). The at least one GN can communicate with the GH via a network link created between the at least one GN and the GH. The GNs join the LPG via the GH. If there is more then one GH in an LPG, header resolution occurs to select only one GH.

A transaction time measurement mechanism has a transaction time manager running on a server computer system, a transaction time agent running on a client computer system that is coupled to the server computer system via a network, and a simple protocol for allowing them to directly and efficiently communicate. The transaction time agent is configured according to configuration data stored in a configuration table in a transaction time database, and stores transaction time data in a statistics table according to this configuration. The data in the statistics table is indexed to allow retrieving only the transaction time data of interest. The simple communication protocol supports multiple transaction time managers in a network computing environment that may all communicate with a single client.

Establishing and maintaining a moving ad-hoc network is provided. The ad-hoc network includes a plurality of equivalent cells communicationally linked together to form a linked equivalent cell network. An equivalent cell header manages each equivalent cell. Additionally, regular nodes, scattered throughout the equivalent cell network, may be provided. Regular nodes have restricted communication privileges compared to the equivalent cell headers. However, equivalent cell headers can be demoted to regular nodes and regular nodes can be promoted to equivalent cell headers as required by equivalent cell network.

When operating as a control terminal and recognizing interference from another logical network, a terminal apparatus determines whether or not a logical network to be controlled is unified with the other logical network. When unification is determined, the terminal apparatus determines whether a control terminal of a logical network newly created by unification is the terminal apparatus or a control terminal of the other logical network.

A method for implementing a virtual leased line (VLL) is provided. The method includes the steps of: configuring a virtual local area network (VLAN) label stack on the basis of VLAN QinQ technique; configuring a VLAN QinQ switching device and a multi-protocol label switching device to communicate with each other; extending a label distribution protocol (LOP) to support encapsulation of VLAN labels, so as to carry out VLAN label assignment and take the extended LOP as a topoloay discovery protocol for an L2 virtual private network; setting the range of VLAN labels; implementing a VLL by constructing a VLAN switching path.

In a method for repeat transmission of messages in a centrally controlled communication network including a plurality of terminals and a central station messages assigned sequence numbers are broadcast or multicast from the central station for reception by terminals of a participating group. As soon as a terminal detects loss of a transmitted message or an error in the transmitted message, it transmits a repeat request for repeat transmission of that message, which includes the sequence number of the lost or erroneous message, over another communication link, especially a point-to-point communication link. The central station repeats the message transmission of the lost or erroneous message but only until a predetermined maximum number of repetitions occurs within a predetermined time interval or until a positive acknowledgement of receipt of the previously lost or erroneous message is received.

The invention relates to a selection method for earth pressure balance shield muck improvement parameters of viscous formation adopting foam as an additive and belongs to the technical field of earth pressure balance shield construction. According to the method, the function relation of liquid-plastic limit and the foam injection ratio, the function relation of the slumps and the foam injection ratio and the function relation of the slumps and the water content are obtained through fitting of curve mathematical relationships. In order to facilitate establishment of effective earth pressure balance in the shield tunneling process, based on the requirement that the viscosity index is 0.4-0.75, the relation of the water content and the foam injection ratio is established, and a relation curve is drawn. On coordinate axes of the relation curve, the optimum foam injection ratio range is determined through the optimum slump range, and then the optimum water content range of muck is determined according to the relation of the water content and the foam injection ratio. In the process of field application, the influences of soil warehouse pressure on the volume of the foam, the bulk factor of the muck and the moisture of undisturbed soil are taken into account, and finally the use amount of foaming agents and the water injection ratio needed for muck improvement of each ring duct piece footage of the earth pressure balance shield are obtained. Experiments needed by the method are simple in operation, low in experiment cost and can be effectively applied to field construction.

A light based treatment method and apparatus for skin photorejuvenation of a target region of skin. The treatment method uses multiple wavelength bands of light or radiation. The ratio of the energies of the wavelength bands is selected according to a skin parameter, e.g., skin type, which can be differentiated by the amount of melanin in the skin and skin condition. The invention features, in one embodiment, a safe and effective method and apparatus for treating a full range of skin types with approximately the same fluence. In some embodiments the invention can also feature a blended wavelength with a first beam of radiation with a first energy and a second beam of radiation with a second energy delivered simultaneously or sequentially. The heating of the epidermis can be maintained approximately constant regardless of skin type, leading to safe treatments and a simple protocol for all skin types.

A system is configured to provide an IoT device with access to cloud resources. The system includes a backend system configured to provide at least one service selected from a group consisting of: data management, file management, user management, and device management. The system also includes an IoT client device including an IoT device and a backend services module in communication with the IoT device, the IoT client device is configured to communicate with the backend system over a wide area network. The backend services module includes an IoT protocol engine configured to identify an API call for the backend system from a message communicated from the IoT device and a backend services API engine in communication with the IoT protocol engine, the backend services module configured to generate the identified API call. The backend services module also includes an Internet stack for communication of the API call to the backend system;

beta-keto esters are prepared by way of a lipase-catalyzed transesterification. The synthetic methodology provides a simple scheme for the synthesis of optically active beta-keto esters that are useful building blocks and starting materials for natural product synthesis. Moreover, the methodology employs mild, solvent-free conditions. The methodology may also be employed for resolving racemic alcohols.

A first electronic network node (110) is provided configured for a key exchange (KEX) protocol, the first network node is configured to obtain a shared polynomial (a) shared with a second network node, coefficients of the shared polynomial a being selected modulo a first modulus q, generate a private key polynomial (skI), coefficients of the private key polynomial being bounded in absolute value by a bound (s) generate a public key polynomial (pkI) by computing a polynomial product between the shared polynomial (a) and the private key polynomial (skI) modulo the first modulus (q) and scaling the coefficients of the polynomial product down to a second modulus (p).

The invention discloses a method for shield sandy muck improving capacity enhancement and parameter determining. Sandy soil consistent with a stratum where a shield penetrates through serves as a mucktest material, a foaming agent and water serve as a basic improving material, according to the muck collapsing degree value and the apparent state, the proper improving area is determined, accordingto whether the initial water containing amount of the sandy soil of the stratum where the shield is located is in the range of the water containing amount of the proper improving area or not, whetherwater needs to be injected or not is clear, whether bentonite or high-molecular polymer needs to be injected to enhance the capacity that the muck can be improved by the foaming agent and water, according to the proper improving area, the foam injection ratio is determined, the muck in the proper improving state is subjected to a penetration test, and whether the impervious performance of the muckmeets the construction need or not under the high water pressure condition at the shield site is detected. The clear muck improving thinking is provided, the direction is clear, the technology is reliable, and the method can be directly used for shield tunnel site construction.

The invention relates to a method for protection switching in a data network network including at least two rings (ERA, ERB) with a shared span (SP2,3) and a plurality of nodes (1-4). Each ring (ERA, ERB) has an associated ring manager (RMA, RMB) for checking its associated ring (ERA, ERB) and the ring managers (RMA, RMB) have dedicated different priorities (PR1, PR2). When a failure (interruption) occurs in a shared span, a shared span node (2, 3) sends a failure message (FSP2,3) to a ring manager (RMB) of higher priority (PR1) of an associated ring (ERB), and the ring manager (ERB) unblocks its port (PB2) while the ring manager (RMA) of lower priority (PR1) maintains its port (PA2) blocked.

The present invention relates to a method for charging an electrical device (102) with a charger (101) via a data interface (103). The data interface (103) comprises at least a first data line (D+) and a second data line (D−) coupling the charger (101) and the electrical device (102). According to the method, the charger (101) and the electrical device (102) are coupled through the first and second data lines (D+, D−). At the charger (101) the first and second data lines (D+, D−) are short-circuited (301). The electrical device (102) detects, if the first and second data lines (D+, D−) are short-circuited and in response to the detected short-circuit (301) at the charger (101), the electrical device (102) short-circuits (401) the first and second data lines (D+, D−). Then, the charger (101) opens the short-circuit (301) of the first and second data lines (D+, D−) and detects, if the first and second data lines (D+, D−) are short-circuited at the electrical device (102). The charger (101) supplies a charging current to at least one of the first and second data lines (D+, D−) in response to the detected short-circuit (401) at the electrical device (102).

The invention discloses a six-component high-precision micro rolling moment measuring device, which relates to the technical field of aerospace wind tunnel force measurement tests, can simultaneouslymeasure six aerodynamic components with extremely different loads acting on a test model, and adopts the specific scheme that the six-component high-precision micro rolling moment measuring device comprises a main balance element, a bearing, a model connecting sleeve, a balance supporting rod, an air inlet pipe and an air outlet pipe, wherein the main balance element comprises a supporting rod endand a main balance element model end which are located at two ends respectively, the supporting rod end is connected with the balance supporting rod, the main balance element model end is connected with a stator of the bearing, and a rotor of the bearing is connected with the model connecting sleeve; a rolling resistance element is annularly arranged at the periphery of the main balance element,the rolling resistance element comprises a fixed end and a rolling resistance element model end, and the fixed end is connected with the main balance element model end. The six-component high-precision micro rolling moment measuring device provided by the invention can avoid repeated tests in the same test state, improves test data precision, reduces the test train number, and reduces the test cost.

Systems, methods and computer program products facilitate communication on a network by transmitting a communication on the network from a first node to a second node, the communication including a first segment and a second segment. The first segment consists essentially of a destination port and a data length of the communication, and the second segment includes a payload and at least one of a connection ID, a sequence number, and an opcode. A responsive communication is then received from the second node, the responsive communication acknowledging receipt of the communication transmitted from the first node.

In accordance with the present invention, active carboxylic acid ester groups are coupled on the surfaces of microspheres so as to reduce protocols for microsphere processing, control side reactions, and stably preserve beads containing active carboxylic acid ester groups. Further, microspheres labeled with at least one fluorescent dye cage in the microspheres, and the microspheres are preserved in lower alcohol.

The embodiments relate to a method for providing at least one REL (Rights Expression Language) token, the REL-token or tokens being provided in a message by a MIME (Multipurpose Internet Mail Extension) protocol.