By adopting Session Initiation Protocol (SIP) in WiMAX networks, when the mobile node (MN) moves to a foreign network, the MN sends a re-INVITE message to the corresponding node (CN) to re-establish the connection. This re-connection time is the most costly factor for a handoff. To effectively reduce the re-connection latency, a hierarchical SIP (HSIP) mobility management incorporated with MAC layer operations is proposed. As proposed in the HSIP architecture, several Base Stations (BSs) are collectively managed by an HSIP server to form an administration domain. When an MN roams within a domain, which is the most common mobility case, a re-INVITE message is not necessary, hence a significant traffic reduction can result.
جهت مشاهده تصاویری از محیط برنامه و دریافت آن بر روی لینک زیر کلیک نمایید.
لینک: پروژه Efficient hierarchical SIP mobility management for WiMAX networks با NS2
It’s required to write a Tcl script that implements the following network topology and simulation scenario. A snapshot of the NAM output should be handed as well.
۱٫calculate/measure the following metrics by processing the output trace file. You can use grep/awk etc to process this information:
* Sequence number vs. Time at n1
* Queue length vs. Time at n2
* Num of dropped packets at n2
۲٫ Consider the following parameters:
* Offered Load: The rate at which CBR traffic is being injected into the network. Express it in kbps (kilo bits per second).
* Packet Loss: The number of packets that were sent by the sender, but didn’t reach the destination. Express it in percentage.
* Average end-to-end delay: If t1 is the time the packet was generated at the source and t2 was the time the packet was received at the destination. Delay of a packet is t2-t1. Calculate average of these values for packets that reached the destination. Express it in ms.
* Throughput: The rate at which bits are being received at the destination? Eg: If 100 packets of size 100 bytes were received in a duration of 100 seconds, we say the throughput is 100 *100 * 8/100 = 800bps or 0.8kbps. Express it in kbps.
use grep/awk etc to process this information for UDP and TCP separately:
* Offered Load vs percentage packet loss
* Offered Load vs Average end-to-end delay.
جهت مشاهده تصاویری از محیط برنامه و دریافت آن بر روی لینک زیر کلیک نمایید.
لینک: پروژه ایجاد یک گره ساده برای شبکه سیمی با نرم افزار NS2
In this article, some main routing algorithm used in Ad Hoc network, such as DSR, DSDV, TORA and AODV are analyzed with the help of NS2 simulator. Firstly, performances of these four routing protocols are tested in NS2, and then draw a design of the routing protocol in Ad hoc network. Different routing protocols, which can be classified into two main categories – proactive and reactive, correspond to different scenarios. Among the four algorithms, AODV is superior to others in most scenarios.
جهت مشاهده تصاویری از محیط برنامه و دریافت آن بر روی لینک زیر کلیک نمایید.
لینک: پروژه شبیه سازی و مقایسه پروتکل MAC بر اساس ۸۰۲٫۱۱b با NS2
Multi-input multi-output (MIMO) is a well-established technique for increasing the link throughput, extending the transmission range, and/or reducing energy consumption. In the context of wireless sensor networks (WSNs), even if each node is equipped with a single antenna, it is possible to group several nodes to form a virtual antenna array, which can act as the transmitting or receiving end of a virtual MIMO (VMIMO) link. In this paper, we propose energy-efficient clustering and power management schemes for virtual MIMO operation in a multi-hop WSN. Our schemes are integrated into a comprehensive protocol, called cooperative MIMO (CMIMO), which involves clustering the WSN into several clusters, each managed by up to two cluster heads (CHs); a master CH (MCH) and a slave CH (SCH).
جهت مشاهده تصاویری از محیط برنامه و دریافت آن بر روی لینک زیر کلیک نمایید.
لینک: پروژه خوشه بندی و مدیریت انرژی و توان برای ارتباطات MIMO در WSN با NS2
A Mobile Ad-hoc network (MANET) is a set of mobile terminals, which move in different directions with different speeds. MANETs are found very useful in real applications such as time-lacking implementations and indoor environments. In this paper, we analyze the behavior of Optimized Link State Routing (OLSR) and Better Approach To Mobile Ad-hoc Network (BATMAN) routing protocols, in stairs environment, based on real data from our MANET testbed. We evaluate the performance considering three metrics: throughput, delay and packet loss. We design and implement two experimental scenarios: static stairs scenario and shifting stairs scenario.
جهت مشاهده تصاویری از محیط برنامه و دریافت آن بر روی لینک زیر کلیک نمایید.
لینک: پروژه مقایسه عملکرد OLSR و BATMAN در MANET توسط تست در محیط stairs با ns2