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Developed a the handover method and equipment of service channel based on Access and Routing Indicator in the relay network, Full consideration to relay a wireless communication networks more routing and control channel and business channel quality differences in demand, and As far as possible re-use of wireless communication networks in a variety of resources, Reduce overhead and delay of the system

Developed a control channel transmit diversity method and wireless communication network that control signaling can be transmitting by high reliability and wide coverage, the control channel is used different transmission frequency and time interval as well as the control and data is used uniform encoding and incremental redundancy code during the transmission timing interval (TTI) through joint use control channel time diversity and encoding diversity method, the control channel can be introduced time diversity gain and encoding diversity gain. And the transmission of control channel is ensured high reliability and wide coverage by the joining or Independent use of time and encoding diversity when the overhead and complexity of the system is reduced.

The ultrasonic detection is one of the important ways to inspect the wall-loss defects on-line for oil pipeline. The on-line power spectral estimation what characterized short time serial, higher resolution and anti-noise was a key technology to in-line inspect the pipeline. Based on power spectral estimation on-line, the digital multi-channels ultrasonic inspection system with 20 probes was developed. The system consists of main and sub-structure. Inspection board communicated with embedded computer with PCI bus and the numbers of channel was expended by means of high-speed switch. The ultrasonic echo signal was processed with Burg maximum entropy spectrum estimation on-line. The test shows that the inspection system could inspect the inner and outer defects and is suitable for on-line detection of pipeline corrosion. It will be used widely in practice.