Sanjay Kumar Biswash

Multi home agent and pointer-based (MHA-PB) location management scheme in integrated cellular-WLAN networks for frequent moving users

In this paper, we introduces a multi home agent and pointer-based location management scheme. Multi home agent preserves the location information for different wireless technologies (Universal Mobile Telecommunication system, Wireless Local Area Networks) and maintains a cache for the location information of mobile host. In addition, an index based call delivery system has been proposed. The performance comparisons and numerical analysis are helpful to find out the efficiency and effectiveness of the proposed system, with respect to existing location management techniques (single registration scheme, and dual home agent scheme). It has been observed that the registration cost, call setup delay, registration delay and overhead at mobile switching center are reduces in the proposed MHA-PB scheme.

Efficient Resource Management by Exploiting D2D Communication for 5G Networks

Device-to-device (D2D) communication is a promising technology for 5G networks, providing high data rates, increased spectral and energy efficiency, and reduced end-to-end delay and transmission power. However, in current cellular systems, the performance of cell edge devices suffers when multimedia content is directly uploaded toward the base station side due to poor link quality. This requires a greater number of resource blocks and additional upload time, thus degrading the quality of service. To reduce the number of resource blocks and upload time, this paper proposes an efficient resource management scheme that exploits D2D communication in the uplink case. This scheme consists of two phases. In the first phase, in the case of poor link quality, a novel relay selection scheme is used in the multihop (two-hop) communication strategy; in the second phase, an effective new resource allocation scheme is used in multihop communication. This scheme minimizes packet loss, upload time, and number of resource blocks, whereas it increases the throughput of the network. Simulation result demonstrates the superiority of the proposed scheme over other schemes in the literature.

An efficient metric-based (EM-B) location management scheme for wireless cellular networks

In the current era, the wireless cellular network is gaining much attention in the network mobility for qualitative service. Towards enhancing the QoS and narrowing the dilemma of network management (location management) an efficient metric-based location management technique is introduced in this paper to capture the current location of mobile subscribers. The attributes of this technique are based on metrics calculation and location management message routing path determination. First, the current mobile switching center will calculate the shortest metric-based path between current and master (previous) location of mobile terminals (user), thereafter it performs the location management procedure through the optimal suggested path by the mobile switching center. This proposed technique will reduce the signaling cost, registration delay, call setup delay, network overheads and total location management cost. The proposed analytical model checks the scalability and effectiveness of proposed system over certain attributes and a comparison is made with the existing available techniques.

An Efficient Routing Protocol for Ad-Hoc Networks

A mobile ad-hoc network is infrastructure less, self organizable, multi hop packet switched network. In ad-hoc network, node movements results in dynamic topology and frequent link failures. Studies shows that on demand protocols perform better compared to table driven protocols. Ad-hoc On Demand Routing (AODV) is one of the popular on demand routing protocol. In this paper, we have proposed an innovative method by considering the MAC layer feed back to reduce the route discovery latency and routing overhead of AODV protocol. Also proposed a new approach of preemptive route maintenance to miti gate the delays and overhead incurred during the original AODV. We implemented and simulated the proposed scheme in NS 2. Simulation results show that the pro posed scheme performs better than AODV.

Ant-system-based location management scheme for wireless cellular networks

The current era of mobile networks allow users to communicate while they are moving. These network facilities are dealt by the location management (LM). In this article, the authors are proposing a nature-inspired LM technique based on ant system. The bottom line of proposed scheme is to follow the route of ahead entities and perform the LM based on it. The performance evaluation is carried out and is compared with existing LM scheme. It is observed that the signalling cost, network traffic and overheads are reduced, as compared to traditional LM scheme, in the communication network.

A Device-Centric Scheme for Relay Selection in a Dynamic Network Scenario for 5G Communication

Device-centric architecture is an aspect of fifth generation communication whereby devices/user equipment is able to directly communicate with other devices with minimal involvement by the base station (BS). However, devices that are not within their proximity area communicate with other devices (relay). In this paper, we propose a device-centric scheme for relay selection in a dynamic network scenario. In this scheme, once the communicating devices have reached the maximum distance threshold, they exchange neighbor tables and find common devices (relay) for further communication. In addition, we propose a new relay selection scheme for scenarios, where the devices have more than one device (relay) in common. The proposed relay selection scheme is based on several parameters, including signal-to-noise ratio (SNR), signal-to-interference plus noise ratio, residual battery power, buffer space, and reliability; this provides more reliable and efficient communication. The current relay schemes, including max-min and max-max, are network assisted; the network/BS decides the relay, which increases the load on the BS side. The BS selects relay based on channel state information or SNR, which does not provide efficient or reliable communication. Our proposed device-centric scheme depends less on the BS during relay selection, which reduces network overhead, and the relay selection scheme provides more efficient and reliable communication. A comparison with other relay selection schemes shows that our scheme is 30% more effective in each case.

An Enhancement of AODV with Multi-Radio in Hybrid Wireless Mesh Network

AODV-MR (on-demand routing protocol with multi-radio extension) has been designed to support multi-radio interfaces; it uses more than one interface of the same mesh router or gateways for broadcasting duplicated control packets (i.e., RREQ, RRER, and HELLO message) or to rebroadcast it. We have modified AODV-MR, by allocating one interface in a dynamic manner for sending routing/control packets or data packets. This allocation of interfaces is based on type of mesh routers and traffic direction. The efficiency and effectiveness of the modification work have been evaluated compared with AODV-MR in terms of packet delivery ratio, routing packet overhead, end to end delay, and throughput.

Modelling and cost analysis of location management scheme for PCS networks

Location management is a fundamental issue of mobility management. It tracks the current location of mobile subscriber and delivers the incoming calls to them. In this paper we have proposed a modeling to estimate the location management cost, which is based on home location register cost, visitor location register cost, signalling cost, and paging cost. The proposed analytical model is helpful in describing the various parameters for overall location management cost. The numerical analysis has been carried out to explain the location management cost.

An Index-Based Location Management Scheme for PCS Network

Location management provides the guarantee to deliver a call to mobile user during the mobility of user and it is a key challenge in wireless cellular networks. In this paper, we are introducing a new index-based location management scheme. It is based on indexing of location update information at the home agent of network. A tuple of index will keep track of range of location update information and corresponding thread of it, connected to stack of information table. To register a new mobile user, the mobile switching centre will generate a new identification number with the help of mobile switching centre identification number and temporary mobile subscriber identity of subscriber. If, the identification number is with in the range of index then, the Care of Address of mobile subscriber is added to information table else, the index will be reconstruct based on new range of identification number. It has been observed that in proposed technique, the call setup delay and network overheads is reduces over the limitation of minor increment of registration delay. The analytical model and numerical result represents the effectiveness of proposed scheme over the existing schemes.

Bee System Based Base Station Cooperation Technique for Mobile Cellular Networks

Mobility with high degree of network-facility is a mandatory attribute for better QoS in cellular networks, but it leads to a huge increment in energy consumption, a significant fraction of which related to the base stations within the service area. In this paper, we are introducing a base station cooperation technique for energy efficiency in mobile communication networks, and it is based on nature-inspired computing, especially the Bee system. All serving base stations within a given geographical area will work together to provide a better network experience to the mobile subscriber. In order to achieve this, base stations will check for availability of unutilized (or underutilized) bandwidth and if it is over a certain threshold, all base stations perform a re-reunion procedure to provide a uniform distribution of the consumed bandwidth (bandwidth load), thereby providing better service to users. We have formulated the proposed technique to determine the effectiveness, efficiency and scalability of work. Further we create a simulation setup for proposed algorithm using OPNET to implement a real time cellular networks. It has been observed that results of proposed work have sufficient improvement in energy efficiency at the base station with respect to traditional schemes.