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The paper studies the path loss models of the wideband channels at 2.3 GHz, 2.6 GHz and 3.5 GHz which are released by ITU-R(International Telecommunication Union-Radio communications) for the new generation radio network IMT-Advanced in a typical outdoor suburban environment of Shanghai, China. A channel measurement system for these frequency bands was(More)
The inadaptability of the existing network management protocol for the space network environment is analyzed in the paper. A new Spaces Network Management Protocol SP-SNMP is proposed and in which SER, the polling based on MIB and table operation protocol message used are detailed introduced, and conversion gateway is designed for different protocols. At(More)
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