The shortage of radio spectrum resources may hinder the development of 4G

According to informed sources, most of the cities participating in the TD-LTE scale test network test organized by the Ministry of Industry and Information Technology and China Mobile have completed network construction, which means that China's 4G network commercialization has taken another big step; and China's leading 4G standard TD- LT E technology is also expected to win in the final battle for the 4G standard.

However, many experts have recently told reporters from the Economic Reference News

China's radio spectrum is facing the embarrassment of an increasing shortage, and this is likely to affect the normal development of China's 4G industry in the future. Wu Hequan, academician of the Chinese Academy of Engineering, said that the shortage of spectrum resources may become a stumbling block to the development of China's 4G. The relevant industry authorities should formulate regulations to allocate spectrum bands for 4G networks as soon as possible.

The radio spectrum is becoming a scarce resource in the telecommunications industry

According to experts, the radio spectrum (radiospectrum) generally refers to the general name of the radio frequencies that emit radio waves in the 9K Hz-3000G Hz frequency range. All radio services are inseparable from radio frequencies, just like vehicles must travel on the road.

According to the “Regulations on Radio Frequency Allocation of the People ’s Republic of China”, there are currently more than 30 types of radio services in China, including professional or research services such as terrestrial radio services and radiodetermination services, as well as daily services such as broadcasting services, and three major operations Commercial mobile communication services such as G SM network, CDMA network and 3G network of the company.

Qiu Hao, a researcher at the Research Institute of ZTE Corporation, told reporters from the Economic Reference News that the characteristics of the radio frequency spectrum determine that it has become a basic resource for the telecommunications industry. Qiu Hao said that first of all, the radio spectrum is limited. Due to the propagation characteristics of radio waves at higher frequencies, radio services cannot use radio frequencies in higher frequency bands indefinitely. At present, humans cannot develop and use frequencies above 3000G H z, although the use of radio spectrum can be based on time, space, There are four ways of frequency and coding for frequency reuse, but in terms of a certain frequency band and frequency, the frequency used in a certain area, a certain time and under certain conditions is limited; second, the exclusivity of the radio spectrum. Radio spectrum resources and other resources have a common attribute, that is, exclusivity, once in a certain time, region and frequency domain, once used, other equipment can no longer be used.

According to Qiu Hao, these two characteristics determine that once the radio spectrum of a certain frequency band is allocated to a certain service, it means that other services and even equipment cannot use this frequency band. With the continuous emergence of various types of radio services, the available radio frequency bands will become fewer and fewer.

According to Qiu Hao, the public currently has a wrong understanding of the radio spectrum, that is, only the operators ’services and broadcast and television services need to occupy the radio spectrum. But in fact, in many aspects of the national economy, the radio spectrum is an indispensable and important resource.

At the prompt of Qiu Hao, the reporter looked through the information and found that the radio train dispatching command system in the railway transportation industry, integrated radio communication and radar satellite navigation and positioning in the maritime transportation industry, dispatch communication and navigation in the civil aviation transportation industry, etc. All occupy the radio frequency band. In addition, due to military needs, some frequency bands have been reserved.

According to Qiu Hao, with the advancement of radio technology and the development of economy and society, various uses and various types of radio equipment have emerged in large numbers, and the demand for radio frequencies in various industries is increasing. The current trend is that with the further development of China's economy, road and rail transportation, air transportation, and maritime transportation will further increase the demand for related communication and navigation technologies, especially the emerging G PS positioning and satellite communications. At that time, communication and navigation services related to these areas will occupy part of the radio spectrum band. Therefore, the future is left to the telecommunications industry, especially the frequency bands used by 4G networks in the future will become more and more scarce resources.

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