A study of handover scheme for loss tolerance video source in wireless ATM network | |
| Author | Chetaporn Charnarong |
| Call Number | AIT RSPR no.TC-02-01 |
| Subject(s) | Wireless communication systems Asynchronous transfer mode |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-02-01 |
| Abstract | Wireless Asynchronous Transfer Mode (WATM) is a combination between the Asynchronous Transfer Mode (ATM) and Wireless Network technologies, which enhances the multimedia service on fixed ATM network and mobile terminals. Since mobile users have moved from one area of Base Station (BS) to neighbor BS, the handover process is required to handle the services. Furthermore, the jitter or Cell Delay Variation (CDV), which impacts Quality of Service (QoS) on Constant Bit Rate (CBR) type video service, has been induced during the handover process. Since there are some existence researches about the lossless buffer size at BS and Mobile Terminal (MT) to suppress cell loss and cell delay for homogeneous and heterogeneous case. For more realistic, the studying about the behavior of lossy buffer size at BS and MT for both cases should also be taken into account. This main purpose of this research study is to evaluate the loss tolerance of BS using randomly discard scheme for specifying the BS buffer size and MT buffer size in homogeneous and heterogeneous case. The distribution shape of BS buffer size and its range are affected by the handovercross- load and transmission rate for the homogeneous case. While handover-cross-load has affected only on the heterogeneous case. Also, the range of BS buffer sizes for the homogeneous case is wide and depends on the transmission rate (Rd). On the other hand, for heterogeneous case the transmission rate (Rd) do not much impact the range of BS buffer size. Compared with the distribution of lossless and lossy BS buffer occupancy, we can conclude that under the same environment, the distribution of BS behavior for both cases looks like the uniform distribution. Furthermore, higher handover-cross-load needs more BS buffer size than lower handover-cross-load. For high handover-cross-load, the distribution of BS buffer size becomes the uniform distribution, which is distributed from an accumulative time. For Cell Loss Ratio (CLR), the characteristic of CLR range of BS buffer sizes is wider when handover-cross-load is high. However, for the MT buffer size, it is depending on CDV and transmission rate (Rd). Thus, the lossy MT buffer size can not decrease more than jitter limitation. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-02-01 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Teerapat Sanguankotchakorn; |
| Examination Committee(s) | Ahmed, Kazi M.;Erke, Tapio; |
| Scholarship Donor(s) | Telephone Organization of Thailand (TOT) - Partial Scholarship Asian Institute of Technology (AIT); |
| Degree | Research Studies Project Report (M.Eng.) - Asian Institute of Technology, 2002 |