I. Introduction
In recent years, with the rapid development of the electronics industry and communication technology, as well as the three major driving forces of demand, competition and technology, the communication industry is undergoing a huge change. New types of telecommunications services based on data, voice and video are emerging endlessly and developing rapidly . The core idea of ​​future communication proposed by the communication industry is service-driven, that is, the separation of media and transmission, and the separation of transmission and control. It does not require the physical level to realize the combination of television networks, telecommunications networks and computer networks, but the realization of three networks on high-level services The integration of the Internet provides a unified and open platform for the transmission of voice, data, video and other services on the three networks. In this case, the traditional highly centralized network control idea is not feasible. The new network architecture requires further simplification of the network control function to achieve the unity of the platform, which requires the intelligentization of communication terminals to promote telecommunications terminals Evolving continuously towards the direction of intelligence. In addition, the rapid development of microelectronics technology and computer hardware and software technology has laid the foundation for terminal equipment to handle more and more complex tasks and provided the possibility for personalization of terminal equipment, which has made the terminal get rid of the network to some extent. The constraints can have more and more powerful functions. Finally, users themselves have urgent hopes for the terminal, hoping that the terminal functions are more powerful, more flexible, and simpler, and there is an urgent need for terminal intelligence.
Second, the definition of intelligent communication terminals
In the literal sense, the so-called intelligent communication terminal is firstly a "terminal", which is not difficult to understand. Compared with the network, it directly provides the edge devices used by users. The second is "communication", which is easy to understand. It is mainly provided to users for effective delivery of messages from one place to another. Finally, intelligence is the core of this definition. In fact, the concept of intelligence was proposed with the advent of computers. According to the definition of the computer field, intelligence is to have both computing power, storage capacity and self-learning ability. In this way, the definition of the intelligent communication terminal is obtained, that is, the intelligent communication terminal is a terminal device for communication purposes that has the capabilities of computing, storage, and self-learning at the same time. Typical smart communication terminals include smart phone devices, conference smart terminals, IP phone smart terminals, notebook computers with communication capabilities, and personal digital assistants with wireless communication capabilities. According to different communication methods, intelligent communication terminals can be divided into the following three types of fixed intelligent communication terminals (for fixed communication methods), mobile intelligent communication terminals (for mobile communication methods), and computer intelligent communication terminals (for computer network communication methods). Of course, with the improvement of electronic integration capabilities, the same intelligent communication terminal may include several categories above.
Generally, intelligent communication terminals have the following characteristics:
In the hardware system, the intelligent communication terminal must have a central processing unit (CPU), memory (Memory), input components and output components, that is to say, the intelligent communication terminal is often a dedicated microcomputer device with communication functions. In addition, the intelligent communication terminal can have multiple input methods, such as a keyboard, a mouse, a touch screen, a microphone, a camera, etc., and can adjust the input as needed. At the same time, intelligent communication terminals often have multiple output methods, such as speakers, display screens, etc., which can also be adjusted as needed.
In the software system, the intelligent communication terminal must have an operating system. Since the operating system is the basic platform for application software, competition for the operating system is extremely fierce. The current mainstream operating systems for mobile smart terminals are Symbian, Windows Mobile and Linux, among which Symbian occupies most of the mobile smart terminal market. Although Windows Mobile started late, there is a tendency for latecomers to prevail. Although Linux's share is not large, the threshold is relatively low, which is also promising. The operating systems of fixed intelligent terminals are eclectic, and various embedded operating systems have occupied a certain market share. Of course, the mainstream operating systems of computer terminals are the Windows operating system and the Linux operating system. With the development of communication technology, the support of the above two operating systems for communication is becoming stronger and stronger. Secondly, based on an increasingly open operating system platform, personalized application software is also emerging, such as communication books, games, recorders, instant messaging, calendars, etc., which greatly meets the needs of personalized users. Among them, many application software and communication hardware can be used for information barrier-free communication, such as speech recognition, speech synthesis, handwriting recognition, etc., and some can be used for information security, such as terminal firewalls.
In terms of communication capabilities, intelligent communication terminals often have flexible access methods and high-bandwidth communication performance. As an intelligent communication terminal, it often adjusts the selected communication method automatically according to the selected service and the environment, so as to facilitate the user to use. At present, mobile intelligent terminals often support multi-mode communication, which can support GSM, WCDMA, CDMA2000, TD-SCDMA, WiFi and WiMAX, etc., so as to adapt to a variety of standard networks, not only supporting voice services, but also supporting multiple wireless data services. Fixed intelligent terminals often support PSTN, xDSL, IEEE 802.3x, etc., so as to provide terminal service reliability while guaranteeing access to multiple services. Based on its own scalability, compatibility and flexibility, the computer intelligent communication terminal can have all current communication methods with the development of communication technology.
In terms of functional use, intelligent communication terminals are more humanized, personalized and multifunctional. With the development of computer technology, the communication terminal has moved from the "device-centric" mode to the "human-centered" mode, integrating embedded computing, control technology, artificial intelligence technology, and biometric authentication technology, which fully reflects the "people-oriented" The purpose of "is to make the communication terminal more user-friendly. Due to the development of software technology, the intelligent communication terminal can also adjust the settings according to individual needs to make the communication terminal more personalized. At the same time, the intelligent communication terminal itself integrates a lot of software and hardware, and has the functions that the traditional terminal does not have.
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