Dynamic Migration Technology Of Real-Time Signal Processing Based On SDR

With the rapid development of wireless communication technology, the demand for wireless communication services is also growing. To meet the needs of the business, we have to continue to increase infrastructure. But energy consumption and maintenance costs will also increase at the same time. The flow characteristics of wireless mobile networks will lead to the uneven distribution and change of business needs with the flow of population. Therefore there is such a problem that processing performance declines in the localized area of high traffic processing and computing resource utilization efficiency is very low in the localized area of low traffic processing. The problem that the local computing resources are very tight and the overall computing resources are sufficient cannot be fully resolved only by increasing infrastructure.Resource virtualization technology is proposed in order to solve the above problem. And the dynamic migration of signal processing is the core part of virtualization technology. This paper is to study the dynamic migration technology for signal processing, especially for communication real-time signal processing. On the basis of existing virtualization technologies and corresponding dynamic migration, this paper proposed to utilize software defined radio platform to design and implement a new dynamic migration system. The system could meet the high real-time requirement of communication data services. And finally the system is applied to communication relay transmission service.This paper mainly study and innovate in the following aspects. First, in order to ensure business data continuity during the dynamic migration, this paper proposed a data streaming dynamic migration technology. The technology encapsulates and optimizes different data stream processing module based on software radio platform. In particular, the consuming module will avoid being called in the data stream switching. Thus the overall time of migration will be shortened. Second, this paper proposed the dynamic migration technology of the control information stream. The technology achieves the control information of real-time signal processing tasks and system information that do not change in the short term to migrate to the destination. It will promote the business process before to be restored in the destination system as soon as possible and thereby reduce the service interruption time in migration. Third, this paper designed and implemented the real-time signal processing dynamic migration scheme with high real-time. The scheme carried out a detailed design for the entire dynamic migration process and proposed a dynamic migration technology of signal processing tasks. The technology combines dynamic migration technology of data stream and control information stream together to achieve a dynamic migration system. Compared to traditional migration technology, the scheme proposed by this paper obtained a significant advantage in terms of performance. Finally, this paper also designed dynamic migration system solution of relay processing business based on real-time signal processing dynamic migration system previously mentioned. The system achieved the dynamic migration of video relay transmission services. And then the migration performance of relay processing service is analyzed and verified.