CASE
 
Next Generation Wireless Networks Research Group
Supervised By Dr. Sadia Aziz

A number of graduate and post graduate students are working under this group.

Team Leader

Ishtiaque Mahmood (PhD Student)

Graduate Students

Affan Nazir
Usman Idress
Rafia Hassan Gillani

Under Graduate Students

Bint –e-zehra
Numan bin Rehan
Tayyeb Moin

Work on following projects is in progress under NGWN research group.

1) QoS Provisioning using IPv6

Introduction/Scope
Multimedia applications running on Internet require bandwidth, minimum delay, minimum jitter and minimum packet loss, various models such as IntServ and DiffServ tries to satisfy QoS needs of applications. One of the common problems with these models is that they do not use any dynamic mechanism to find multiple paths to a destination through the network and then route the QoS sensitive flows on a path that is most appropriate for the QoS requirement of a particular flow. This can lead to a situation when we may need to deny admission to further QoS flows till some resources are made available. “QoS Provisioning using IPv6”, uses a QoS based Multipath Routing Algorithm (QoS-MPR) which can work alongside the traditional routing algorithm and it is able to construct multiple Label Switched Paths to a particular network hence; we can inject more QoS sensitive flows in the network without deploying excess resources. “QoS Provisioning using IPv6” will not only allow to inject more traffic into the network but it will also provide efficient label switching mechanism using the “Flow Label” field of the IPv6 header and it will also serves as a simple load balancing mechanism.

2) Design and Development of GA based efficient mechanism for provisioning and maintaining QoS in 4G networks

Introduction/Scope
The proposal envisions that next generation 4G devices will be based on SDR technology. This technology will enable the device to switch from one physical interface to other by loading an appropriate waveform from the storage. The component will be compliance to Software Communication Architecture (SCA) to enable its wide acceptability by next generation communication solution providers. The solution will be equally valid for other QoS application meant for SDR devices. In 4G networks services will be provided to user without any interruption .At lower layers list of available networks will be maintained using SDR and whenever existing network is not available or has fading, mobile device will be switched to other network selected from list of available networks depending upon user QoS requirements. Maintaining promised QoS in 4G networks is critical task since many parameters are involved and complexity is increased due to heterogeneous wireless networks. In this proposal complexities in 4G networks related to QoS is addressed and efficient mechanism is suggested based on GA's. GA's are stochastic algorithms which ultimately present better solution after some iteration. As user may move anywhere with his handheld device he may move with the speed of multi hundreds km/s, but requiring guaranteed bandwidth every time. E.g. a user having UMTS connection may pass through area where UMTS services are not available but CDMA2000 is available and immediately he comes to area where HSDPA services are available to providing and marinating promised QoS is really big task which should be catered for. So we are developing efficient mechanism for providing and maintaining QoS in 4G networks which will be mainly following intelligence of GA's