1 New requirements in the communications industry Looking at the current information industry in China, 3G is undoubtedly the biggest bright spot this year. With the launch of the 3G market, the mobile Internet industry will become a market that needs to be explored. Mobile search, wireless communities, and mobile video may become killer applications in the 3G era. . To this end, the majority of traditional Internet companies have also made efforts to enter the mobile Internet market, hoping to seize the market in the first year of 3G to seize the market. Regarding the changes that cloud computing has brought to the industry, first of all, cloud computing has broken the traditional IT industry pattern, but at present there has not been a stable value chain division of labor. Traditional equipment providers are using cloud computing to widely enter the service field; second, Existing cloud computing solutions are characterized as closed, private, and customized. The international standardization work has just begun, and cloud computing open source projects are very active; again, Internet service providers, such as Google and Amazon, are ahead of traditional cloud computing. Equipment manufacturers and system integrators. For the problems that need to be solved in the cloud computing era, he believes that interoperability and standardization must be done first. If there is no international standard or some de facto standards, users will face great difficulties in moving from one cloud platform to another; Secondly, the management model of operators must also change accordingly. Cloud computing emphasizes that centralized resources form resource sharing. If operators want to build a cloud computing platform, they must build a unified resource pool and coordinate it with future applications. To form a service to the end user. This is mainly reflected in the following aspects: The types of outsourcing software and hardware used by each business platform are different, and it is difficult to control and circumvent problems such as business interruption and system failure caused by abnormal outsourcing parts; the operation and maintenance methods provided by the business platforms of various manufacturers are different, requiring a large amount of training Technicians are familiar with various maintenance systems, increasing the investment in maintenance costs; the independent construction of the business platform, the processing capacity of different regions and different services is seriously uneven, and the utilization of hardware resources invested in construction is not high. From a theoretical analysis, no matter what kind of business, its processing logic still belongs to the category of applications, any application can be simply summarized as a collection of computing mode + storage mode + communication mode. In order to bring a system with flexibility and unlimited capacity, there are generally two solutions: one is to deploy multiple modules of a single service on the same machine or selectively deploy multiple services; the second is to achieve statistical multiplexing through virtualization technology Resources. The former is highly dependent on business programs and needs not to affect each other. It is relatively easy to realize the same type of business from the same manufacturer, and can only achieve resource sharing to a certain extent. The virtualization technology can better hide the implementation details of resource reuse and sharing, and can minimize the coupling between the structure and the business. Of course, relying solely on virtualization technology cannot fully achieve business-level flexible call control. In the next chapter, the article will focus on the complete solution of business scheduling and virtualization. Through this solution, mobile operators can obtain: (1) The business needs reasonable access to computing resources according to actual processing. So that operators do not need to predict computing resources before providing a certain business service, eliminating the risk of prior investment, so that the business can start from a small scale, and as the demand increases, the business is rapidly expanded through business scheduling and virtualization technology Occupied hardware resources. (2) Solve the problem of uneven business in different regions and different time periods. On one hand, it can reduce power consumption by reducing the occupation of hardware resources when the daily business volume is relatively low; on the other hand, it can avoid operating risks by expanding the occupation of hardware resources when holidays or unexpected business peaks occur. (3) Provides a possibility to lease large amounts of mobile network resources to the outside world. After the computing resources are virtualized, payment can be made in a short time, and the leaser can apply for the use of computing resources as needed. 2 Business scheduling and virtualization solutions In response to the urgent requirements of the above mobile operators, the article presents an overall solution that combines virtualization and service scheduling. Its model architecture is shown in Figure 1. The core management components mainly include the virtual machine management system and the business dispatch center. From the perspective of scheme design, the virtualization of the underlying physical equipment is separated from the control of the processing capability at the business level. An application necessarily requires a computing mode, a storage mode, and a communication mode. In order to achieve the flexibility and infinite mirroring of computing resources, the most realistic way is to virtualize these resources and hide their multiplexing and sharing mechanisms from the application. Different public computing will be distinguished according to abstraction and management level. This solution proposes to divide the mobile communication business computing cloud into two levels for management. The first is the process of virtualizing the physical hardware as an abstract computing unit. This process is not affected by the upper-layer business, and all computing unit attributes are consistent; the second is For the dynamic scheduling system of differentiated services, the business system can be flexibly controlled according to different business processing logic, business performance requirements, and resource occupancy expectations. Through the cooperation of the business scheduling center and the virtual machine management system, it can meet the requirements of real-time dynamic resource adjustment for multi-services of operators. At present, virtual machine technology has gradually matured. Most mainstream virtual machine manufacturers use XEM, KVM and other core technologies to realize the construction of virtual units for hardware CPU and memory resources. The virtual machine technology mainly includes the following four characteristics: Can run multiple virtual units simultaneously on a single physical server; Virtual machines on the same physical hardware device are isolated from each other; You can save the complete virtual unit in a file, and move and copy the virtual unit by moving and copying these files; It can shield the association between the virtual unit and the underlying physical hardware, and can be smoothly migrated on any server without modification. Virtualization technology converts physical resources into resource pools that are easy to divide, and meets the basic conditions of cloud computing in design concepts, and has universal resource scheduling capabilities; but in the actual use of the communication field, the resources that need to be scheduled are not limited to For the virtual unit itself, mobile operators urgently need a solution for centralized capability control for different business applications, which can monitor the dynamics of multiple business flows in the entire network in real time, intelligently determine the load relationship between various services, and balance the resources of hardware and virtual units distribution. The article makes up for the shortcomings of the communication service control level of the virtual machine technology by constructing a business scheduling module based on the virtual machine technology. The dispatching center cooperates with the virtual machine management system to complete the dispatching model as shown in Figure 2.
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