3G Network Construction and planning

As the third generation mobile communication, since 2004 has entered the initial stage, and different technology according to different characteristics in the continuous development. By January this year, we can see that there are about 180 3G networks in the world and 64 WCDMA. The development of CDMA2000 network has been reduced gradually by 2004, and the corresponding EVDO development is showing a fast rising trend. Because of the smoothness of the development of CDMA technology, the development of CDMA2G and 3G is a trend of smooth rise. WCDMA is a very rapid upgrade of the overall situation, based on gsm2g strong background, it should be said that there will be a strong subsequent exerting force.

3G users are still CDMA2000 1X occupy a very large share, compared to the WCDMA user relatively more, already more than 20 million. 3G terminal has been the whole industry chain, we are very concerned about, especially in the initial stage, its performance and style is very concerned about. At present, 1X terminals have exceeded 600, EVDO100, 85% concentrated in Korea. WCDMA has reached 108, WCDMA style has been a relatively many improvements. At present, the commercial system, from the WCDMA angle is mainly based on F4, cellular mobile camp including broadband access, different camps competition between the comparison, but also to promote the 3G technology and standards continue to develop. CDMA2000 's camp is in the position of comparative advantage, as 1X itself can provide a user rate of up to 80K. WCDMA itself and the EVDO version of the 0 compared to a certain degree of power, as the HSDPA business has become a WCDMA technology planning considerations of a very important technical direction, especially in the United States and Japan operators have been in the recent gradual planning of the HSDPA.

CDMA2000 further provides a version of the product after version 0 and will provide a preliminary commercial system in the first half of next year. In contrast to the cellular camp and broadband access technology, the two technology camps are now starting to start long-term development projects, the data rate involved in the target is 150 trillion downlink, uplink 50 trillion.

The important technology of 3G development, because of the different technology development characteristics of three kinds of technology, the elements of technology planning are different. 3G Terminal equipment is as the 3G industry chain is still worth paying attention to, in the operators and manufacturers of technology and construction level, network construction is very noteworthy, including wireless network planning, transmission core network and business platform planning is very important. (Computer science)

Business and applications, in addition to the technical level of planning, we also believe that the 3G business market positioning, business requirements of the mining is also the future of 3G development of a very important issue of profitability. According to the technical characteristics of WCDMA, compared with 2G technology, it realizes the leap from TDMA to CDMA, because of the different business model, there are many new challenges in concrete design. WCDMA terminal models are relatively rich in price-performance, high, with many international operators, mainly the so-called continuity of the market, a lot of 3G is transferred from 2G to provide higher business needs, resulting in the entire 3G positioning is high-end positioning. New operators in some international markets have also positioned themselves as low-end users, making 3G of low-priced handsets on the market.

Market demand and 3G technology matching degree is the focus of the industry talk. Especially in China, the data business in the 2.5 generation as a breeding period, is still in the initial stage of development, and 3G business, of course, it can provide low-end or high-end comprehensive technology, but many people still realize that 3G in the delivery of high-speed business has a strong advantage. How do you make the existing market provide higher business performance? We believe that it should be a constant guide to the market as well as the strong support of technology, operators and industries to interact with various factors. Without the guidance of technology, the whole market is also impossible to form spontaneously, so here also need the whole industry chain parties can work together to create a total win situation.

CDMA2000 overall development, because the technology is still in the 800 trillion low-end mainly, commercial aspects of the current not yet. Although the technology has a certain introduction, but the overall or continue the CDMA technology system, so is a relatively stable development trend. Especially in the business and application, Japan and Korea have very good ideas and successful examples. TDSCDMA,2004 year and the recent overall development is also the process of rapid speed increase, this and the establishment of the TDSCDMA Industry Alliance initiated by the three ministries, in the chip business, testing environment, to promote mutual coordination and construction process, so that in the technical aspects of the discovery of some problems can be very quickly resolved. At present, four system manufacturers have launched the corresponding products, there are also five chip manufacturers launched products, matching the variety of mobile phones are in the process of testing.

In technology, the most powerful or Datang Telecom, Datang Telecom and Shanghai Bell is a strong cooperation, Shanghai bell in product development has a very powerful force, Datang Telecom and Shanghai Bell's cooperation on the industry has played a very important role. Terminals of the chip, the current Datang etc have launched the chip, in the conduct of business testing. The corresponding domestic well-known mobile phone manufacturers have joined the industry chain.

In the network construction, 3G of the entire network construction in the initial need of integrated planning, especially as a cellular mobile communication, the user's continuous business ability is very important, so in the layout of the time can not be simply in the initial part of the place. Analysis of the entire network investment, wireless network investment is very high, generally occupy the entire network of 60% to 70%. Investment in business applications should be a very important position, but in terms of the proportion of investment, it is relatively small. From the perspective of investment return, the implementation planning of wireless network will occupy a very important position in technical planning. The planning of the wireless network will be based on the technical differences, mainly to determine the appropriate site and configuration.

How to plan for a very high quality, low-cost and competitive 3G network? For operators to see is a very strong experience to explore and accumulate. The following GSM and WCDMA point of view to explain the difference in technology and cause planning differences. GSM overall planning is relatively simple, especially in the coverage and the capacity of the network is relatively independent, so we can first cover, and then the capacity of the planning. WCDMA is a kind of CDMA system, is a kind of soft capacity technology, so the coverage capacity and quality are three. Voice service is a more balanced system, as the 3G system is a hybrid of voice and data business. The data business itself, such as in the Web page downloads, for the user is up and down the line of asymmetric business, in the wireless network design is likely to be subject to the uplink or down a certain direction, rather than fully balanced direction. Due to the difference between 2G and 3G technology, the main aspect of 2G is frequency planning, while 3G is a process with limited interference, limited capacity and limited quality, which takes more factors into consideration.

The overall goal of wireless network planning, operators in a certain period of time to carry out a reasonable network, is the integrated network cost the smallest. Wireless network resources are very expensive, in our country, the frequency of wireless network is relatively cheap, very expensive abroad. Operators must achieve the maximum quality and capacity. Operators in the wireless network planning, in fact, and business strategy, market strategy closely related to the first to determine the profitability of business and some key business. What is a profitable business? First of all, to ensure the coverage of wireless network to achieve the best coverage effect. From the 3G point of view, it is likely that the voice business is still the most important component of the 3G profit business. The future development of a very promising data business should be in the early stage of the operator planning process, combined with QRS and the entire business model under the conditions of good planning.

Just the introduction of the wireless network planning, due to the different technical complexity, especially in the proportion of investment, so that operators in the wireless has put the biggest concern. However, in the core network, because of 2G and 3G has very good continuity, so after the wireless network is determined, the core network planning principle is more important to its business support capabilities, and support fixed network and mobile network integration. Especially in the network follow-up construction, how to reduce the cost of network investment and the corresponding maintenance costs are the main. I take the 3GPP network structure for example, 3G the entire core network and 2G are similar, divided into circuit domain and group domain, due to the increase in wireless bandwidth, can provide more broadband packet business data. 3G Mobile network business development planning compared to fixed network is good, planning two roads, one road is circuit switching domain, oriented mobile multimedia, make control more focused on MS, and at the transmission level using packet transmission mode. In the packet switching domain, in the routing, QS to give a very strong guarantee. Voice service has a strong advantage, as an end-to-end full IP architecture of the overall business replacement takes 3-5 years, but the intervention of MS Group domain may be completed in a year or two. Operators can according to the development of technology and business market adjustment, distribution in the two domains of business flow and business development strategy, so it should be said to be a very small risk of the smooth introduction trend.

Compared with fixed business, mobile business has a very good business development model, especially in the development of data business. Mobile users will grow at a high rate over the next few years, with China Mobile subscribers still at around 40 million in five years. It is also very clear about the technical roadmap for the development of the entire wireless and core network. The global 3G business process, starting last year has entered a period of steady development, especially TDSCDMA recent rapid development. At home, from the government's point of view, also actively for the 3G the overall development of the corresponding planning. We believe that 3G from the network level, the network planning and construction of the first need to grasp a very strong technology development trend, at the same time should be a good analysis of our country's network status and the corresponding market strategy, determine the corresponding business development strategy, overall planning the whole business development.