Abstract: Disclosed are a low-cost high-efficiency drip irrigation system for a cotton field and a use method thereof. The drip irrigation system for a cotton field includes a filtering device and a water supply device; wherein the filtering device adopts different types of single filtering devices or combined filtering devices according to different water source types; the water supply device includes multiple stages of main pipes, submain pipes and laterals; the laterals (a drip irrigation tape with labyrinth on one side or a drip irrigation tape inlaid with emitters inside) are laid on the surface of the ground and located below a mulch film. The drip irrigation system adopts the design of large flow (1.5-3.4 L/h), slightly larger pipe diameter (>75 mm), low water pressure (operating pressure of drip irrigation tape being 0.03-0.07 MPa) and suitable drip irrigation uniformity (80%-90%).

Abstract: An electromagnetic braking system and control method, with the system having a CCU, a braking cylinder, a push rod, an electromagnetic braking ring, an electromagnetic braking piston fixed to the push rod, a first shading plate and a second shading plate, a photoelectric sensor fixed near the push rod, and an electromagnetic braking control circuit, and the control method including following the steps: initial estimating of the braking distance (l) according to the current magnitude, electromagnetic force between the two electromagnetic coils and initial velocity (v) of the push rod, arranging a restoration distance (?l) between the top dead center and the piston after braking, installing two shading plates and the photoelectric sensor; and setting the distance between the two electromagnetic coils to when the starts braking.

Abstract: The present invention discloses an electromagnetic braking system and control method, the system comprises a CCU, a braking cylinder, a push rod, an electromagnetic braking ring, an electromagnetic braking piston fixed to the push rod, a first shading plate and a second shading plate, a photoelectric sensor fixed near the push rod, and an electromagnetic braking control circuit. The control method includes following steps: initial estimating the braking distance l according to the current magnitude, electromagnetic force between the two electromagnetic coils and initial velocity v of the push rod, arranging a restoration distance ?l between the top dead center and the piston after braking, installing two shading plates and the photoelectric sensor; setting the distance between the two electromagnetic coils to L=l+?l when starting the braking.

Abstract: System and methods are provided for admission to networks that include at least one node providing network coordinator functions. A network coordinator may have a random number generator, with the network coordinator distributing a random number within a network that include at least a first node and a second node. The network coordinator may receive a request for a dynamic encryption key from the first node, with the request being encrypted using a static encryption key unique to the first node, and with the static encryption key being determined based on the distributed random number. The network coordinator may then send a dynamic encryption key to the first node, with the dynamic encryption key being encrypted using the static encryption key. The second node may then admit the first node into the network. The network may be a Multimedia over Coax Alliance (MoCA®) network.

Abstract: The use of traffic flag symbols allows a large number of CPEs to transmit traffic notifications to a network controller. In some such embodiments, hundreds of CPEs simultaneously transmit traffic flags on different subcarriers of a channel. For example, in a MoCA2 based access network, up to 480 CPEs can transmit flags in only 5 ?s in the 100 MHz-wide channel.

Abstract: System and methods are provided for admission to networks that include at least one node providing network coordinator functions. A network coordinator may have a random number generator, with the network coordinator distributing a random number within a network that include at least a first node and a second node. The network coordinator may receive a request for a dynamic encryption key from the first node, with the request being encrypted using a static encryption key unique to the first node, and with the static encryption key being determined based on the distributed random number. The network coordinator may then send a dynamic encryption key to the first node, with the dynamic encryption key being encrypted using the static encryption key. The second node may then admit the first node into the network. The network may be a Multimedia over Coax Alliance (MoCA®) network.

Abstract: A network-capable device is configured to: automatically detect the presence of a MoCA network (or other network, depending on the network protocol in the application environment), and configure itself for communication on that network at the appropriate communication frequencies. The network-capable device can be configured to create a new network (e.g., a new MoCA network) if there is no network broadcast signal within a band. Preferably, the network-capable device requires little or no user intervention to configure itself for operation at network operating frequencies or to create a new network where none is detected.

Abstract: The use of traffic flag symbols allows a large number of CPEs to transmit traffic notifications to a network controller. In some such embodiments, hundreds of CPEs simultaneously transmit traffic flags on different subcarriers of a channel. For example, in a MoCA2 based access network, up to 480 CPEs can transmit flags in only 5 ?s in the 100 MHz-wide channel.

Abstract: The use of traffic flag symbols allows a large number of CPEs to transmit traffic notifications to a network controller. In some such embodiments, hundreds of CPEs simultaneously transmit traffic flags on different subcarriers of a channel. For example, in a MoCA2 based access network, up to 480 CPEs can transmit flags in only 5 ?s in the 100 MHz-wide channel.

Abstract: A network-capable device is configured to: automatically detect the presence of a MoCA network (or other network, depending on the network protocol in the application environment), and configure itself for communication on that network at the appropriate communication frequencies. The network-capable device can be configured to create a new network (e.g., a new MoCA network) if there is no network broadcast signal within a band. Preferably, the network-capable device requires little or no user intervention to configure itself for operation at network operating frequencies or to create a new network where none is detected.

Abstract: System and methods are provided for admission in a network comprising at least one node providing network controller (NC) functionality. A first node in the network, which is capable of generating SALTs, may assume NC functionality, and may distribute the SALT to at least one other node within the network. The first node may receive from the at least one other node, during admission to the network, a request for a dynamic encryption key, with the request being encrypted using a static encryption key unique to the at least one other node, and the static encryption key being determined based on the SALT.

Abstract: The use of traffic flag symbols allows a large number of CPEs to transmit traffic notifications to a network controller. In some such embodiments, hundreds of CPEs simultaneously transmit traffic flags on different subcarriers of a channel. For example, in a MoCA2 based access network, up to 480 CPEs can transmit flags in only 5 ?s in the 100 MHz-wide channel.

Abstract: The use of traffic flag symbols allows a large number of CPEs to transmit traffic notifications to a network controller. In some such embodiments, hundreds of CPEs simultaneously transmit traffic flags on different subcarriers of a channel. For example, in a MoCA2 based access network, up to 480 CPEs can transmit flags in only 5 ?s in the 100 MHz-wide channel.

Abstract: System and methods are provided for admission in a network comprising at least one node providing network controller (NC) functionality. A first node in the network, which is capable of generating SALTs, may assume NC functionality, and may distribute the SALT to at least one other node within the network. The first node may receive from the at least one other node, during admission to the network, a request for a dynamic encryption key, with the request being encrypted using a static encryption key unique to the at least one other node, and the static encryption key being determined based on the SALT.

Abstract: A system and method for node admission in a communication network having a NC and a plurality of associated network nodes. According to various embodiments of the disclosed method and apparatus, key determination in a communication network includes an NN sending to the NC a request for a SALT; the NN receiving the SALT from the NC, combining the SALT with its network password to calculate a static key, and submitting an admission request to the network coordinator to request a dynamic key. The SALT can be a random number generated by the NC, and the admission request can be encrypted by the NN using the static key.

Abstract: The use of traffic flag symbols allows a large number of CPEs to transmit traffic notifications to a network controller. In some such embodiments, hundreds of CPEs simultaneously transmit traffic flags on different subcarriers of a channel. For example, in a MoCA2 based access network, up to 480 CPEs can transmit flags in only 5 ?s in the 100 MHz-wide channel.

Abstract: A method comprises receiving a predetermined length of information, the information including a first MAC Protocol Data Unit (MPDU) being of variable length and including at least one Sub-MPDU; independently decoding the first Sub-MPDU and a plurality of additional portions of the received information, each portion having a length equal to the length of one Sub-MPDU; processing data from the first Sub-MPDU; and determining from the processed data how many of the other decoded portions constitute Sub-MPDUs of the received MPDU.

Abstract: Systems, methods, and apparatus for sharing resources for a network bridge configured to perform communications on a MoCA network and a WiFi network using the shared resources. The method includes: receiving a MAP from a MoCA NC and checking the MAP to determine whether the MoCA NC has scheduled MoCA communications in an upcoming MAP cycle; in instances where the MAP indicates that the MoCA NC has scheduled MoCA communications in an upcoming MAP cycle, configuring the shared network bridge resources for MoCA communications: in instances where the MAP indicates that the MoCA NC has not scheduled any MoCA communications in an upcoming MAP cycle, configuring the shared network bridge resources for WiFi communications; at the conclusion of a WiFi communication period, sending a CTS to the WiFi devices an the network and configuring the shared network bridge resources for WiFi communications.

Abstract: A system and method for node admission in a communication network having a NC and a plurality of associated network nodes. According to various embodiments of the disclosed method and apparatus, key determination in a communication network includes an NN sending to the NC a request for a SALT; the NN receiving the SALT from the NC, combining the SALT with its network password to calculate a static key, and submitting an admission request to the network coordinator to request a dynamic key. The SALT can be a random number generated by the NC, and the admission request can be encrypted by the NN using the static key.

Abstract: A system and method for node admission in a communication network having a NC and a plurality of associated network nodes. Key determination in a communication network includes a NN sending to the NC a request for a SALT; the NN receiving the SALT from the NC, combining the SALT with its network password w calculate a static key, and submitting an admission request to the NC to request a dynamic key. The SALT can be a random number generated by the NC, and the admission request can be encrypted by the NN using the static key.