Abstract
The issues of constructing integrated fifth-generation mobile access networks based on the further development and modification of the LTE technology were studied. The LTE frame structure and features of using the LTE technology in real-time systems with packet delay control were analyzed. It was concluded that it is possible to reduce the time delays in the LTE radio channel by modifying the frame structure and the method of dynamic allocation of the time-frequency resource. A method was proposed for reducing delays in a radio channel by forming a dedicated logical channel in the ad hoc mode in which a channel allocation unit is formed based on the subframes. Moreover, combined synchronous and asynchronous multiplexing of real-time data into a synchronous sequence of packet transport modules was performed in the ad hoc channel. As a result of the studies, architecture and basic principles of the fifth-generation mobile access network based on modification of the LTE technology were developed. This will enable connection to the network of various sensor-equipped devices with individually specified requirements to the intensity of the data flow and allowable packet delays.
Highlights
According to the ITU concept, it is assumed that the generation networks (NGN) will integrate most services based on Internet Protocol IP [1]
The fourth generation (4G) mobile communication networks provide for transmission of all types of multimedia traffic via IP by encapsulating data according to the TCP/IP stack [2, 3]
Solution of these three tasks is the subject of further studies in a direction of creating an integrated fifth-generation mobile access networks based on modernization and improvement of the LTE technology
Summary
According to the ITU concept, it is assumed that the generation networks (NGN) will integrate most services based on Internet Protocol IP [1]. The IP multiple-service platform IP Multimedia Subsystem (IMS) based on the IP protocol is a certain tradeoff between the existing network infrastructure and new requirements to service quality [4] These new requirements arise because of the widespread use of microprocessor-based devices, both stationary and mobile, combined in a mobile access network. On the other hand, the standards and commercial technologies of 4G based on OFDM cannot satisfy to a sufficient degree the variety of requirements to 5GIN networks and, first of all, support for real-time applications In this regard, the topical line of studies in the field of networking technologies is further modification of the LTE technology and development of integrated fifth-generation mobile access systems on this basis
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