On optimization technology in 4G system

With the development of wireless communication technology, the fourth generation (4G) mobile system research is still the focus. In modern heterogeneous 4G wireless networks, the basic standard is call service interrupt call and call continuity. Switching is the best way to achieve continuous call service. In heterogeneous wireless networks, the key challenge is continuous call connections between different networks such as Wi-Fi, Wi-Max, WLAN, and CDMA. At present, the concept of cellular mobile communication system is introduced in this paper, and the last link of cellular network or mobile network is wireless communication. The internet. The network is distributed over a land area called a cell, each serving at least one fixed location transceiver called a cell site or a base station. The concept of handover is then described in detail, which is the process of transferring an ongoing call or data session from one channel connected to the core network to another channel. Switching technology is divided into hard switching and soft switching, compared with the traditional switching (hard switching, etc.), soft switching has many advantages: it improves the seamless communication, soft switching is the main feature of the transmission is not interrupted. However, soft handoffs also have some drawbacks, such as increasing complexity and consuming additional resources in the downstream direction. Finally, this paper discusses various switching decision algorithms and analyzes their performance. The performance of one of the 4G vertical switching algorithms is studied and simulated. The results of the analysis and the results show that the proposed algorithm gives better results in minimizing the processing delay during the switching process.