Handoff performance and optimum cell size evaluation : in road-to-vehicle communications at 5.8 GHz | |
| Author | Paisarn Sriputta |
| Call Number | AIT Thesis no.TC-03-01 |
| Subject(s) | Intelligent Vehicle Highway Systems Mobile communication systems |
| Note | A thesis submitted in partial fulfillment of requirement for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. TC-03-01 |
| Abstract | Road-to-Vehicle Communication system (RVC) based on Radio-on-Fiber (ROF) is supposed to be the key application of Intelligent Transport System (ITS). Several radio base stations communicate with a control station over ROF connection. The base stations use the same frequency band to communicate with mobile stations. The result is one large virtual cellular zone enclosing number of base stations. Under high mobility conditions, virtual cellular zone can accommodate frequent handoff. However, due to the result of employ several base stations, both intra-virtual cellular zone and inter-virtual cellular zone interferences are produced. Therefore, the size of virtual cellular zone and the number of base stations in cellular zone are needed to be examined. In addition, suitable handoff scheme is needed to be selected. In this thesis work, handoff algorithm in virtual cellular zone environment is studied to determine suitable handoff scheme. Moreover, in order to determine number of base stations and their coverage area in virtual cellular zone, the downlink-outage-probability is investigated. An algorithm is presented for investigating the performance of virtual cellular zone with the RVC application at 5.8 GHz. Simulation results show that, the effects of handoff schemes are dissimilar for different service types. Finally, hybrid-reserve scheme is suggested to gain the benefit of both pre-reserve and post-reserve scheme. The presented algorithm can estimate optimum cell size in the situation that traffic load and system capacity are given. Additionally, it is costly to employ large number of base station in virtual cellular zone and simulation results show that if base stations are greater than three then downlink-outage-probability is slightly reducing. Therefore, greater than three base stations in virtual cellular zone is not suggested. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. TC-03-01 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Ahmed, Kazi M. ; |
| Examination Committee(s) | Erke, Tapio J. ;Teerapat Sanguankotchakorn; |
| Scholarship Donor(s) | TOT Corporation Public Company Limited; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2003 |