Abstract:

Today public communication network is developing in the direction that networks are widely interconnected using communication network infrastructure as backbone and Internet protocols; at the same time，cloud computing，a computing paradigm in the ascendant，provides new service modes.Communication technology has the trend of developing towards computing technology and applications，and computing technology and applications have the trend of developing towards service providing.Communication technology and information technology truly comes to a convergence.Telecom operators put forward the strategy to be providers of comprehensive information services in succession.To adopt cloud computing technology not only facilitates the upgrade of their communication network technology，service platform and supporting systems，but also facilitates the construction of the infrastructure and operating capacity of providing comprehensive information services.In this paper，the development processes of public communication network and computing are reviewed.Then a new concept of public computing communication network（PCCN）is proposed and analyzed in detail.The inevitable evolution of public communication network into PCCN is elaborated.The architecture，entities and key technologies of PCCN are discussed in detail.

Key words: Key words public computing communication network, service oriented intelligent open operational architecture, cloud computing, service