International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com (ISSN 2250-2459, ISO 9001:2008 Certified Journal, Volume 4, Issue 3, March 2014) 802 Resource Allocation Architecture with Improved QoS for SLA in Next Generation Mobile Systems Sanjeev Shrivastava 1 , D. S. Bhilare 2 1,2 SCS, DAVV, Indore, MP, India Abstract— The Internet Engineering Task Force is working on expanding and extending the TCP/IP model to support mobility and multimedia and real-time applications on the Internet. Thus, new protocols, amendment of existing protocols have been developed. Also there has been a significant increase of interest in enhancing quality of service (QoS) constraints in mobile systems. The proposed network system architecture and mechanisms to provide real-time services to mobile users. Mobility experiences wide variations of quality of service and to obtain mobility independent service guarantees, a mobile system needs to make advance resource reservations. In this paper Transport Layer Management System (TLMS) is introduced at Transport Layer of TCP/IP reference model. TLMS ensure user’s service level agreement (SLA) by monitoring, controlling and allocation of resources at server side with the help of application layer and network layer adaptation engine. Keywords— Mobile Systems, Quality of service (QoS), Resource Allocation, Service Level Agreement (SLA), Transport Layer Management System (TLMS) I. INTRODUCTION Now-a-days, tremendous researches have been done in the field of wireless network, Internet and other network architecture for supporting Quality of Services as these networks support a wide variety of services viz. file sharing, video streaming, voice communication, etc. [1] However most of them are not suitable for mobile environment because it is susceptible to bandwidth constraint and its dynamic topology presents challenges to achieve QoS. supporting QoS in mobile environment is really difficult as every user’s links’ bandwidth is susceptible to get affected by the neighboring users’ links’ bandwidth and on the other hand it is known that mobile users move from one location to another frequently and thus they join, leave and re-join links which presents greater difficulty to QoS routing in mobile environment. Keeping these drawbacks in mind, continuous work is being carried out in computing technology and wireless communication networks in order to guarantee smooth connection at network and transport layer so as to facilitate seamless services to users. [2,3] The advancement of mobile devices and applications, also the continuous increase in the number of users and the wide use of MANET in battlefields and emergency situations necessitates the provision of real-time services taking into account the Quality of Service requirements viz. bandwidth, reliability, low jitters and less end-to-end delays. As the mobile user changes locations frequently that creates the necessity of resource management for guaranteeing end-to-end services. Recent studies have provided numerous approaches and models to facilitate resource management efficiently supporting not just global mobility of mobile users but also enabling agile service creation and access agnosticism. These studies are been done keeping in account the perspective of both client and network. Some studies have also emphasized on the usage of Multiple Stream Reservation Protocol (MSRP) over Resource Reservation Protocol (RSVP) in order to provide real-time services by securing the bandwidth necessary to cater seamless service to mobile users. This paper considers the bandwidth reservation problems in mobile environment and the problem is addressed by several works in the literature. Further, this paper provides a detail study on bandwidth reservation at transport layer that purports on allocating resources to users based on their QoS satisfaction level and SLA. II. RELATED WORK Kamaljit I. Lakhtaria [4] with an aim to enhance the end- to-end quality of Next generation Networks based communications, through his work, have proposed a service aware policy-based approach that employs all layers of the environment through parameterization, profiling, negation and arbitrating mechanisms. His approach takes into account the Next Generation Networks based on quality assurance QoS and Quality of Experience (QoE). The purpose of his work is to pursue the end-to-end controllability of the quality of the multimedia next- generation network (NGN) -based communications in an environment that facilitates end user’s access agnosticism, service agility and global mobility.