| The dominant factors of mobile communication operators succeed in the competition contain the capacity and quality of network converage, the mobile network technology and service level are reflected by the two factors essentially. At present, the implement method of good network converage of indoor domain has been the centre of network optimization. One main method of indoor converage optimization is to optimize the indoor distribution systems. With the development of science, many large buildings, shopping malls, which are the main places of indoor converage.Nowadays, the mobile internet has entered into the condition with rapid development, Mobile data transmission requirements of people promote the continuous development of communication technology. At present, there exist four kinds of internet pattern: GSM, WLAN, TE-LTE and TD-SCDMA respectively, each of them processes unique characteristics. So they can coexist on for a long time, this may cause difficulties to the indoor network converage of mobile operators.In this paper, the development of mobile communication technology is introduced, and the TE-LTE and WLAN are reviewed comprehensively. From the aspect of spurious interference and blocking interference, the isolations of TD-LTE and WLAN are calculated based on the mutual interference respectively. From the design angle and engineer angle, the approach and method of interference avoidance of WLAN and TD-LTE system are studied, this provides the certain reference and guiding significance to the engineering construction of internet in the future. |