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Wireless multi-hop ad hoc network communication method

The invention aims to provide a wireless multi-hop ad hoc network communication method, which comprises the steps of network establishment and maintenance, and service transmission. The network establishment and maintenance comprises the following steps of: finding of neighbors; adding and deletion mechanisms of the neighbors; and establishment and maintenance of a route, in which the interaction of neighbor information among network nodes ensures that each network node finally possesses a topology table of whole network connection relationship, then a main operation node of the network nodes is used to calculate the route of the whole network according to the topology table and notifies other network nodes in the network of routing information in an information interaction mode at the same time, and the topology table and a routing list respectively saved by each network node are kept consistent to finish the establish of the network when the network is finally steady. The service transmission comprises the following steps of: search of an access point, link application, link establishment, service transmission and link demolition. A self-developed wireless multi-hop ad hoc relay network of the invention can finish the communication in tunnels or on occasions with similar characteristics.
Owner:NANJING ZHENGBAO COMM NETWORK TECHCO

Vapor generator for intelligently controlling vapor temperature

The invention provides a vapor generator for intelligently controlling vapor temperature. The vapor generator comprises a box, an electric heating pipe, a cold water inlet and a vapor outlet. The cold water inlet is formed in the side wall of the box. The upper portion of the box is provided with an exhausting opening. The electric heating pipe is arranged in the box and comprises an outer pipe and an electric heater arranged in the outer pipe. The electric heating pipe is arranged in the vertical direction. A water input channel is formed in the lower portion of the electric heating pipe to ensure that water in the box can enter the electric heating pipe to be heated. The upper portion of the electric heating pipe is connected with the vapor outlet. The vapor outlet is provided with a temperature sensor and used for measuring temperature of the vapor outlet. The temperature sensor, the electric heating device and a controller are in data connection. The vapor generator of the new structure is designed, vapor can be generated fast and efficiently, moreover, the vapor generator has the beneficial effects of carrying out heating fast, enabling temperature distribution to be uniform and being safe and reliable, and the heating efficiency is improved.
Owner:安徽省皖晨电子科技有限公司

Assisted proactive IP address acquisition

The present invention relates to reducing the time required to provide an IP address to a mobile node by pro-actively obtaining IP addresses, through the use of PANA-assisted pro-active IP address acquisition, IKEv2-assisted proactive IP address acquisition, or by pro-active IP address acquisition using DHCP only. Where a DHCP is used to pre-configure an IP address in an MPA framework, a PAA generates a plurality of Session-Ids, the plurality of Session-Ids is maintained as a pool of Session-Ids, a Session-Id is retrieved from the pool when the PAA sends a PANA-Auth-Request, and providing a pre-generated IP address to an MN reduces pre-authentication time. Where a IKEv2-assisted pro-active IP address acquisition to pre-fetch IP addresses, is used to reduce the time required to provide an IP address to a MN an IP address is obtained from a CTN as part of a standard IKEv2 procedure. A co-located DHCP relay agent is placed on the access router or a DHCP client for obtaining the IP address from a DHCP server in a target network using standard DHCP, a PAA pre-generates a pool of Session-Ids, the pool of Session-Ids is forwarded directly to a Ipsec-GW. Where the time required to provide an IP address to a MN is reduced using only DHCP, direct DHCP communication between the mobile node and the DHCP relay or DHCP server in the CTN is enabled and the mobile node sends a unicast DHCP message to the DHCP relay agent or to the DHCP server in the CTN, requesting an address, while using the address associated with the current physical interface as the source address of the request. In this system a set of PANA Sessions-ids have been pre-generated.
Owner:TELCORDIA TECHNOLOGIES INC
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