Dilemma between unlicensed wireless microphone use (Broadcasters) and exclusive LTE operators:A solution of dynamic spectrum leasing mechanism

• Main Authors: Yao-YuLi, 李曜宇
• Other Authors: Kuang-Chiu Huang
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/25hfa4

碩士 === 國立成功大學 === 電信管理研究所 === 104 === Abstract The research purpose of the study aims to propose a solution to the interference between wireless microphone users and a LTE operator, as a compensation to the coexisting situation of the services. Pursuing a better spectrum efficiency, he national communication committee (NCC) has re-farmed part of the 700MHz radio band, which was used by the license-exempted wireless microphone users, for LTE download carriers. As secondary users, wireless microphone users are asked to do no harm to the LTE operator signal, and have to endure the interference cause by LTE. The double act of Taiwan NRA in telecommunication is responsible for the flawed auction. The spectrum planning authority, as known as the Minister of transportation and communication(MOTC), viewed the operator as a primary user in that radio band. However, the wireless microphones are not cognitive devices that avoid causing interference. In the other side, the regulatory authority, as known as the National Communication Committee(NCC), has no effective method to deal with the unpredictable interferences. NCC could only propose other possible locations for those wireless microphone users. Therefore, the broadcasters who invested a lot in wireless microphones and involved in tremendous amount of the devices, would only have two ways to go. Either to accept the sorely high cost of upgrading equipment or re-investments, or to accept the risk of bad reception. The research first analysis and comparison similar re-farming policies of license-exempted wireless microphone radio bands from USA, UK and Australia. Second, the research collected the models of spectrum secondary markets, and modified them due II to few of them are either technologically or perfectly legitimate to the case of wireless microphone and LTE coexistence. The modification is mainly focus on the difference of wireless microphone to a cognitive service. Nevertheless, this research proposed a third option as bandwidth reduction and peak and non-peak time pricing mechanism. This research also applied game theory and simulation for finding the equilibrium. The conclusion is that the broadcasters would finally accept the bad reception because of the high cost of upgrading. But they would also consider the peak and non-peak pricing based bandwidth reduction, whenever the upgrading cost is relatively low or the value of news event is relatively high. Besides, the research shows national regulation authorities (NRAs) a way of fixing flowed policies through administrative orders and business models. The NRAs could increase the spectrum efficiency and protect the cultural and creative industry all at once. To a LTE operator, the mechanism proposed could create value, reduce risk of bad network quality, the cost is relatively low. Instead of the high re-investment in the same equipment, to pay for the spectrum leasing fee and get a guaranteed reception, the broadcasters are also benefited from the mechanism proposed. Generally speaking, the spectrum leasing mechanism proposed in the research is consistent with the concept of digital convergence. Namely, to loosen control of spectrum usage on certain industries.