Qos in wimax thesis
the primary concerns have been packet loss, atmospheric interference, and contention with other wireless services. WiMAX phones and PDAs are already being developed by companies like Motorola and Samsung. In summary, most of the research is focused on packet scheduling, but it is not clear yet which scheduling algorithms will work best with 802.16. Back to Table of Contents 802.16 is a connection-oriented MAC in that it assigns traffic to a service flow and maps it to MAC connection using a CID. With adaptive modulation, the BS can adaptively change the code if the distance and atmospheric conditions require. An incremental bandwidth request means the SS asks for more bandwidth for a connection. The standard defines several kinds of requests: Implicit Requests (for UGS The SS can request bandwidth implicitly for UGS. But I personally feel that the academic researchers, that are known to conduct more unbiased and valid studies, have not yet contributed adequately to these areas. An experimental study of dccp for multimedia applications, with focus on video, is shown. Gpss is more suitable for many connections per terminal.
The PHY and MAC layers of 802.16 are described in detail with regards to their, qoS aspects.
Resource sharing in a wifi- wimax integrated network Except where reference is made to the work of others, the work described in this thesis is my own or was done in collaboration with my advisory committee.
Research Objectives To acquire detail knowledge of WiMAX and WiMAX2 technology To investigate different methods and techniques for RS deployment in order to cut down the costs.
To understand the different problems in maintaining cost effective deployment.
The type of QoS parameter set distinguishes the status granted by the Authorization Module (admitted or active). The connection can represent an individual application or a group of applications sending with the same CID Wongthavarawat03. Maheshwari05, in FDD, base stations transmit on different sub-bands, and thus do not interfere with each other. One disadvantage is that it is a connectionless protocol; the MAC uses acknowledgements which cause overhead and delays. The 802.16 standard recognizes two authorization models: Provisioned Authorization: QoS parameters are provided by the network management system upon setup, and remain static Dynamic Authorization: Changes to QoS parameters can be requested, and the Authorization Module issues its decisions Thus, the 802.16 standard provides some. 6.2 3G 3G is still not an all IP solution, but that is the goal. They are achieved using the bandwidth request-grant mechanisms described above, and a combination of all the other QoS mechanisms are used to ensure good QoS. Since 802.16 is new, the vendors do not know the answers yet and are very interested in this research.
Qos in wimax thesis