subject: The upgrading of business to promote the development of three-dimensional optical communications - business, optical communications - Communications [print this page] The upgrading of business to promote the development of three-dimensional optical communications - business, optical communications - Communications
In recent years, the telecommunications business is toward full digital, integrated, broadband, intelligent direction of continuous development. Constant in the new business driven by a combination of high-speed, large capacity, multi-service bearer, the advantages of intelligent management of optical fiber communication in a continuously warming. Corresponding to each link in the network communication technology, such as FT-Tx, MSTP, ASON, WDM, ULH and other development has made substantial progress, full access to the commercial stage, an increasingly clear optical network architecture is slowly appear in the Our field of vision.
The upgrading of business is the greatest power in optical fiber communication In the past year, several areas of optical communications have suffered substantial and steady growth, optical fiber, optical network hardware and the overall increase of FTTH and so more than 20%. Several recent studies agree that in the next few years, the global optical communications market will further accelerate the pace of recovery, most of which are driven by the rapid growth of broadband multimedia services. Worldwide development and commercial 3G is fully rolled out, 3G provides users with high data transfer rate, accordingly, the transmission network need to further improve the bandwidth, optical communication technology can solve the problems these issues. My 3G has not yet started, but the mobile communications business, especially the rapid development of data services such as synchronous transfer rate required to keep up, so the demand for optical communications is very urgent; and IP-based business growth also requires a huge access bandwidth growth. With PC-based VoIP especially various soft end use, one can easily achieve through the Internet audio and video communications, multimedia applications need to offer higher data rates and quality of service (QoS), which demanded bandwidth guarantee; in value-added services, such as value-added services such as mobile IVR business use on the user's access to a higher bandwidth requirements. In addition, triple play, represented by the integration of a variety of business, put forward a wider bandwidth, optical communication to promote the continuous development of the client application ... ... a wide range of business to carry the network, transmission, switching, access Entry will require that the optical communication technology in all aspects of network deepening, and this is exactly what the present and future development of optical communication technology the main line. Optical communication in all aspects of three-dimensional network development In all aspects of optical communication as the advantages of gradually emerging, one several years ago proposed the "All-optical network" concept, that is, we transmit the signal out of the network only when a "power - light "and" light - electricity "transformation, and in the network transmission and switching process always exists in the form of light, so can greatly improve the utilization of network resources, so all-optical networks sought after by people.
At present, although we are some distance away from that goal, but the optical communication technology is in all aspects of three-dimensional network development, continue to make breakthroughs, move closer to the ideal target. First, from the access perspective, the fixed networks and mobile networks to broadband technologies are in full development. With the fixed network technology from analog dial, ISDN, ADSL, VDSL to FTTH, new technologies are emerging, while equipment costs have been declining, so as to FTTx access technology, represented by start into the business. At present, Europe and the United States, Japan and China have been active on the FTTx business to try and obtain some practical experience. In FTTx in the business can carry more than the subject of broad popular PON technologies. China Telecom and other major carriers have launched a PON technology, equipment, functional verification test, the major telecommunications equipment suppliers with outstanding performance PON equipment, to commercial standards. With PON technology, operators through the Gbit level downlink rate to provide reliable voice, data, video and other services, and users can enjoy the same reach Gbit uplink speed, to experience the high quality Gigabit access services . At the same time, mobile networks from GSM, GPRS/CDMA1X to WCDMA, HSDPA, its bandwidth is gradually improving. Fixed network and mobile broadband networks, will soon be formed in the transmission level, a new round of expansion and upgrade requirements, optical access technology will be greater opportunities for development. Secondly, the transmission level, MSTP nodes as break through the traditional concept of transmission, the introduction of the service nodes, supporting the transmission and processing of a variety of business and thus become the next generation optical networks is an important direction.
In the country, MSTP has been concerned about the operators and equipment vendors, through the efforts of recent years, MSTP finally made a breakthrough in technology: the initial SDH-based MSTP provides multiple functions to Ethernet pass through the main, the current MSTP devices have support for Ethernet transparent transmission, two-story exchange functions, and support embedded RPR and MPLS capabilities embedded products are maturing, China's first commercial RPR MAN Dalian Netcom also completed.
