Research On Key Techniques Of Radio Resource Allocation In Relay-enhanced Cellular Networks

With the rapid economic development, foreign trade is very important position in the field of national economy, its intensify opening to the outside world, the reasonable optimization of scarce resources and the construction of international information network status is obvious. China as the world’s second largest economy, always adhere to the development of foreign trade for a long time. And foreign trade depends on the development of international logistics, it has great significance to the national economy. Since China’s reform and opening up, China’s international logistics industry has been rapid development, but the overall logistics costs are still high, the inland logistics system is still very weak. Along with the further deepening of the reform and open policy, the hinterland development the needs of the local international logistics industry is becoming more and more strong. Customs is an important part in the international logistics chain, the customs supervision behavior direct role in the international logistics activities. New trend of international logistics inland customs clearance for regulatory reform put forward the request, provides the opportunity, the customs must conform to the trend. Sichuan province in the development trend of international logistics inland has certain typical and representative, because is located in the inland, for a long time local international logistics industry development serious lag, since 2013, chengdu customs building whole customs clearance system promote the reform of customs clearance logistics field, to promote the construction of inland international logistics system, improve the overall level of logistics industry in our country, it is of great significance.Based on the above background, this paper selects a case of building a global system of customs clearance of Chengdu. This article from the current situation of logistics system of our country’s Customs, to summarize the existing problems and development trend, to analysis the background, development and main content of the case. On this basis, to analysis the key factors of a successful case. The key factors are follows: firstly, information sharing, is that to locate function of information sharing, to build and operate the platform; Secondly, the regulation of services, namely,convenient of customs clearance, paperless customs and integration. Tirdly, is that the guarantee of operation,namely, the idea transformation, technological innovation and process optimization; Through analyzing the three key factors one by one,to explain that how to achieve success during the process of chengdu customs building global customs clearance. By the detailed analysis and argumentation, to summarize the key factors of this case of chengdu customs building global customs clearance logistics system, which has the general practical significance and enlightenment for other areas to build global customs clearance system.