Rsaodv a route stability based ad hoc on demand distance vector routing protocol for mobile ad hoc network

International Journal of Wireless & Mobile Networks (IJWMN) Vol. 6, No. 6, December 2014
DOI : 10.5121/ijwmn.2014.6609 113
RSAODV : A ROUTE STABILITY BASED AD HOC
ON DEMAND DISTANCE VECTOR ROUTING
PROTOCOL FOR MOBILE AD HOC NETWORK
Sanjeev K. Prasad1
and Karamjit Bhatia2
1
Ajay Kumar Garg Engg. College, Ghaziabad (India)
2
Gurukula Kangri Vishwavidyalaya, Haridwar (India)
ABSTRACT
High mobility of mobile nodes is one of the major reasons for link failures in mobile ad hoc network
(MANET). The present paper aims at proposing modification of well known Ad hoc On demand Distance
Vector (AODV) routing protocol for MANET seeking stable route for data transmission and incorporating
link break avoidance scheme for such networks. The performance of the proposed routing protocol, named
as Route Stability based Ad hoc On demand Distance Vector (RSAODV), is evaluated considering some
major performance metrics which include average route life time, throughput, packet delivery fraction,
normalized routing load and end–to-end delay. The study is based on simulation runs adopting CBR traffic
pattern taking care of node failure scenarios. The performance of RAODV is compared with AODV routing
protocol. The simulation runs exhibit significant increase in average route life time, packet delivery
fraction and throughput for RSAODV, on the other hand, the normalized routing load and end–to-end delay
are reduced for this routing protocol as compared to AODV routing protocol.
KEYWORDS:
Route Stability, Node Stability, Node Mobility, Node Energy, Traffic Load, Transmission Power.
1. INTRODUCTION
In mobile ad hoc network (MANET), mobile nodes are continuously moving from one location to
another with a pause-time. Thus, MANET topology can change often and unpredictably.
Excessive node mobility may lead to topology changes before network updates can propagate [1].
Many protocols have been proposed for multihop MANET routing to maintain best effort routes.
Route stability mainly relies on route lifetime which, in turn, is related to the route length and the
lifetime of each link [2]. In large-scale MANETs, the route stability is very important [6]. The
hop count of a route may be large. If a route fails, the procedure of route rediscovery results in an
increase in control overhead and end-to-end delay. In high-mobility MANETs, the fast changes in
topology increase the complexity of routing [10]. Hence, there is a need to construct a route in
which each link has long lifetimes.
This paper addresses two main problems in routing of CBR traffic in MANETs - route stability
and route recoverability. To improve route stability in large-scale and high mobility MANETs,
the present work proposes a Route Stability algorithm. In the proposed protocol, a route stability
estimation method and a path finding algorithm are developed to find and maintain stable routes
for communication services in MANETs. In present work, route estimation relies on the node
energy, node mobility, transmission power and traffic load. For the route recoverability in high
mobility MANETs, the present work proposes a Link Break Avoidance Scheme. The performance
of RSAODV is compared with the well-known Ad-hoc On demand Distance Vector (AODV)

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routing protocol [9]. The simulation runs exhibit significant increase in average route life time,
packet delivery fraction and throughput for RSAODV where as normalize routing load and end–
to-end delay are decreased for this routing protocol as compared to AODV routing protocol.
2. RELATED WORK
In mobile ad hoc network, nodes are continuously moving from one place to another with a
pause-time and stability of link/route is an important parameter in such an environment [5]. Route
Stability is the quality which asserts the network environment‟s consistency. Many stability based
routing algorithms considering different criteria have been proposed in literature for MANETs.
The power aware and transmission range route stability schemes are proposed in [3, 4, 16]. In
[3], AOSV algorithm for computing link/route stability, initially, every node begins to estimate
the stabilities of radio links to its neighbours and for keeping track of the link stabilities between a
node and its neighbors, each node periodically broadcasts Hello message (HELLO) including the
location of the broadcasting node towards its neighbours. PAMAS routing algorithm [4] is based
on minimizing the amount of power required to get a packet from source to destination. This
algorithm selects routes with more hops than other routing algorithms. In [16], AODVSR is
proposed where a node receives Hello messages and it first calculates its distance from the
neighboring node using received HELLO messages. Using this distance information, it evaluates
the stability of radio link to the broadcasting neighbour. This information is recorded for
estimating stabilities of multi-hop routes in follow-up processes. In path discovery process,
source node broadcasts RREQ packet that has new link stability field. The intermediate node
rebroadcasts only the RREQ packet with the maximum value for route stability among received
RREQs. The location updating route stability schemes are proposed in [11, 17]. In [11], the
algorithm works on the stability of the node which is determined by the combination of the speed
of the node, the range of the node, the location of the node and the battery power of the node. The
main focus of the algorithm is to reduce the number of acknowledgment packets by varying the
updating information of less stable nodes more frequently as compared to the more stable nodes.
An algorithm presented in [17] enables mobile nodes to implement self-regulated movements in
MANETs. This scheme maintains a certain level of network-based stability by harmonizing the
node movements autonomously due to their limited transmission range and dynamic topology.
The work employed entropy methods for forecasting the future moments of node.
The energy aware and traffic load route stability schemes have been presented in [7, 12, 13]. In
[7], Tomas Holmberg et. al. estimate the traffic at node level by using the incoming/outgoing
packets and introduced traffic estimator that uses two steps in order to predict the traffic over the
links in ad hoc networks. In [12], EA-DYMO considers both the traffic load and energy aware
path for route stability. The work modifies the route selection procedure of DYMO [22] by taking
ratio of the energy factor and the average traffic load for each path. In [13], author has designed a
variable range energy aware dynamic source routing in which the route selection is based on
energy, stability and traffic load. It selects two routes- main and alternate.
The network depended route stability schemes are discussed in [14, 15]. Both schemes modify the
AODV path discovery phase for finding stable route. In [14], Tamanna et. al. proposed the
concept of “moving average” to calculate the neighbor stability. In their work each node
calculates the stability of its neighboring nodes considering both old stability and current stability
values. The old stability means the stability a node has encountered in the previous stability
calculation. Stability calculation is triggered by a timer which expires after a constant interval
periodically. In [15], the authors presented a scheme (VON scheme) that depends on the velocity
and the traffic load of the nodes to determine the nodes involved in rebroadcast to build a stable

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route. This scheme divides the nodes into high speed nodes and low speed nodes. High speed
nodes do not participate in the route discovery phase as they produce unstable routes.
The weight-based stable routing scheme is presented in [2, 18]. In [2], a Stable Weight-Based
On-Demand Routing Protocol (SWORP) for MANETs is proposed in which the weight of a route
is decided by three factors: the route expiration time, the error count, and the hop count. The route
discovery mechanism finds multiple routes from the source node to the destination node. The
algorithm selects the path with the largest weight value for routing. In [18], a Link lifetime based
Backup Routing (LBR) a modified version of SWORP is reported. LBR also selects the multiple
paths with the largest weight value for routing but it keeps the remaining routes as a backup route.
3. PROPOSED MODEL FOR RSAODV ROUTING PROTOCOL
The proposed model aims at improving the well known AODV routing protocol. The new
protocol is named as RSAODV routing protocol. The aim of RSAODV is to provide a more
stable route with avoidance of route break for mobile ad hoc networks. In this scheme, route
stability is estimated by the stability of node which depends on node energy, node mobility,
transmission power and traffic load. These four major processes are employed to find and
maintain the most stable route from source to destination. The mechanism of the proposed
RSAODV routing protocol is shown in Fig. 1.
The abbreviation used in model are : RSV – Route Stability Value, NSV – Node Stability Value,
UN –Upstream Node, DN – Downstream Node, RT – Routing Table, RM – Route Maintenance,
RD – Route Discovery, RREQ packet– Route REQuest packet, RREP packet – Route REPly
packet, RM – Route Maintenance, RD – Route Discovery.
3.1 Route Stability Estimation
In order to allow more stable routes for data transmission in MANETs, we hereby propose to
include a new field, called route stability (RS) field, which is a measure of the stability of the
route, in the RREQ packet, the routing table and the HELLO packet of AODV routing protocol.

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Figure 1. The Mechanism of the Proposed RSAODV Routing Protocol.
In a network, each node periodically broadcasts HELLO message with node stability value. When
a node receives HELLO message it checks node stability value of received HELLO packet and if
it is larger than the threshold value then the node adds the sender of the HELLO packet as its
neighbor node. To determine route stability of the path the source node invokes route discovery
process. The proposed model includes following steps for stable route discovery:
1) The source node adds node stability value (NSV) in RS field of RREQ packet and sends it
to the neighbor nodes (which may be an intermediate node in the final route).
2) Neighbor node compares its own NSV with received RREQ packet route stability value
(RSV). The lowest value is selected i.e. if NSV < RSV then RSV  NSV in RREQ
packet. Forward RREQ packet to the neighbors and so on. This ensures lowest NSV to be
the route stability value of the path being discovered.
3) If destination node receives more than one RREQ packet then it sends an RREP packet in
response to the RREQ packet with the largest Route Stability value to the source node.
The algorithm 1 shows the determination of minimum Route Stability Value of the path.
Algorithm 1: RS_Value(SN, RN)
{//SN sending node and RN receiving node
If ( NSV[SN] < NSV[RN] )
Update NSV[SN] in RREQ packet.
}

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Based on the above scheme, the route stability RS(p) of path is equal to the lowest node stability
value NS(n) of the node in a path and is exceeding a threshold value ω. RS(p) is given by
following expression:
RS(p) = MIN ( NS(SourceNode), .., NS(IntermediateNode), …, NS(DestinationNode))
where RS(p) > ω, the selecting value for route stability.
3.2 Node Stability Estimation
In our method, the estimation of the node stability NS(n), of a node n, is considered to be based
on four different processes e.g. Energy Level (EL), Mobility of Node (MN), Transmission Power
(TP) and Traffic Load (TL). In our scheme, nodes periodically calculate NS value and transmit it
through HELLO message. If any node receives larger NSV than predefined threshold value β from
some node (say x), it adds node x as its neighbor node. The proposed simple linear equation for
node stability NSn of a node n is given by the following expression:
NS(n)= a*EL + b*MN + c*TP + d*TL where NS(n) > β
β is the minimum node stability value for the route and a, b, c, and d are weighing factors for the
corresponding network parameters. All four parameters, with values ranging from 0 to 1, are
chosen so that a + b + c + d = 1. These values are kept flexible so that they can be changed as
per the network scenario. For example, when the network traffic is very high „d‟ can be given
more weight than the other three. Similarly, in a high mobility network, the weight „b‟ dominates
the other factors.
In the computation of NS(n) above, the EL is energy level of node. When energy of each
intermediate node is empty, it is impossible to communicate and link break occur. The MN is the
mobility of node that holds the current speed of node. MN implies node stability and hence the
stability of route. The TP is the transmission power and used in order to elect the node which can
cover the largest range. The TL is traffic load on a node. Nodes, such as intermediate nodes, are
engaged with other jobs. Our method also incorporates the provision to avoid such type of nodes
at the time of making path.
3.2.1. Energy Model
In our energy model, the Energy Level EL of a node n refers to the available energy EA of a node
n which depends on total initial energy and consumed energy [12]. Available energy of node n is
given by the following expression:
EA(n)= TE(n) – EC(n) where EA(n) > ε, the threshold energy level for a
node.
TE(n) is the total initial energy of node n and EC(n) is the consumed energy of node n. The
energy consumed EC(n) depends on transmitting (Etransmit) and receiving (Ereceived) one packet is
given by following expression :
EC(n) = Etransmit (n) + Erecieved (n)
The energy dissipated in transmitting (Etransmit) and receiving (Ereceived) in one packet and is
calculated as follows [13] :
Etransmit (n) = Ptransmit (n) × TD
Erecieved (n) = Preceived (n) × TD

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where, Ptransmit is a transmitting power of one packet, Preceived is a receiving power of one packet
and TD denotes the transmission duration of the received/transmit packets at node. In our
proposed scheme, the algorithm chooses only those nodes in a route that have higher energy than
threshold value ε.
3.2.2. Node Mobility Factor Deciding Model
In a dynamic network such as MANET, the mobility of nodes can not be ignored. It has a vital
role in maintaining a stable route. Thus, we consider mobility or average displacement of node to
be the deciding factor for route setup so that a better route stability can be achieved. In our
proposed scheme we adopt the policy given in [19], where a node with lower average
displacement has a higher chance of being an intermediate node. The weights assigned to the
nodes are reciprocal to their respective displacements. i.e. a node with lower average
displacement is assigned a higher weight and the node with higher value is assigned a lower
weight. Basically, we consider the mobility of a node by taking the average of the distances
covered by mobile node in a given time slot.
We measure the mobility of node MNT(n) as an average speed S(n) of node in time duration T.
Thus, mobility MNT(n) of node n in time slot T (consisting of N sub slots) is given by the
following expression:
T
(n)S
=(n)MN
N
=i
iΔt
T
1
where, MNT(n) < α, the threshold mobility value for a node. S(n) is the distance D(n) covered by
node n in time interval ∆t. Thus speed of node is given by the following expression :
t
nD
nS t
t
)(
)(
where, the distance covered by node n in time slot ∆t (i. e. from time t-1 to time t) from position
Pt-1 (x, y) to Pt ( x, y) is given by the following expression :
2
1
2
1( )y(n)(y(n)+)x(n)x(n)=(n)D ttttΔt
3.2.3. Transmission Power Model
The transmission power TP is used to elect the node which can cover the largest range. In a
dynamic network the transmission power plays a vital role in maintaining the stable route and
hence ad-hoc routing protocols must give due emphasis on the radio propagation model for effect
on signal strength. The effect not only leads to the average signal power decreasing with the
propagation distance but also yields large fluctuation of signal strength in a short range [3], i.e.,
small-scale fading, or in a medium range, i.e., shadowing. These may result in an unstable link
between any two moving nodes even with a short propagation distance. We have used two-ray
ground reflection model [21] for the calculation of transmission power of a node. This model
considers both the direct path and a ground reflection path for this purpose. In this model the
transmission power TP is calculated from the received power Pr at distance d and is predicted by :

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Ld
hhGGP
=dP rtrtt
r 4
22
where, Pt is the transmitted signal power, Gt and Gr are the antenna gains of the transmitter and
the receiver respectively and L (L ≥ 1) is the system loss. It is common to select Gt = Gr = 1 and L
= 1 in ns simulations. ht and hr are the heights of the transmit and receive antennas respectively
and dn
is the distance between two nodes. We have taken n=2 for short distance and n=4 long
distance in our study.
The two-ray model does not give a good result for a short distance due to the oscillation caused
by the constructive and destructive combination of the two rays [20]. Therefore, a cross-over
distance dc is calculated in this model. So dc can be calculated as :
rt
c
hh
d
4
where, λ is wavelength of signal.
In our scheme if node receiving signal power Pr(d) < ρ, the threshold value for node signal
power, the proposed routing algorithm will not select this node for routing.
3.2.4. Traffic Load Estimation Model
Traffic Load for a node is defined as the measure of total cost incurred in sending/receiving
packets by a node. If the time-arrival between sending/receiving two packets is ∆T seconds and
the size of packet is ∆L bits, then the traffic load TL(n) of node n is given by the equation [8] :
T
L
nTL )(
In the present work, we have assumed that in the network, each mobile node sends messages to
any other node with a uniform rate.
3.3. Route Discovery
Route discovery is a process that executes the algorithm 2 to discover the stable route for a
requesting source and destination pair. We propose to introduce a new field Route Stability (RS)
in RREQ packet which indicates route stability value of a path from source to particular node. In
this process, when network initiates all the nodes are assigned a similar high node stability value
(NSV).
Algorithm 2: Route_Discovery
Step1: The source node S initiates a route discovery process by broadcasting a Route Request
(RREQ) packet to all its neighboring nodes. RREQ packet contains the NSV of S.
If ( NSV[S] > β ) then
Broadcast RREQ packet to neighbors with NSV(s).
Else
Not able to generate RREQ packet.
Step 2: Neighboring node N receives RREQ packet. N may be an intermediate node or a
destination node.

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If ( NSV[N] > β ) then //This is a new RREQ packet
{
If ( N is an intermediate node ) then // here N is RN node
{
N calculates the RSV form RS_Value(S, N). // Algorithm 1
Update RSV field in routing table, update RS field in RREQ packet and forward it to all
neighboring nodes of N.
If ( N receives other RREQ packets for same sequence number from some other sending
node(s) ) then
Discard these RREQ packets.
}
Else //N is a destination node.
If ( N receives multiple RREQ packets within a time window, which starts from the first
arrival of RREQ ) then
N picks the largest RSV of RREQs. //Destination will select highest RSV from RREQ
packets from among all received RREQ
packets.
If ( RSV[N] > ω ) then
N sends back reply packet as a RREP to the source node S.
Else
N discards the RREP packet.
}
Else
N discards the RREQ packet
In our model, nodes with NSV greater than threshold value β can become the part of active route.
Further, the threshold mobility value α of a node has also been considered in the proposed
method. This confirms that all the nodes in the active route have sufficient processing power,
manageable traffic load and mobility. This implies that all such nodes can‟t fail too soon resulting
in a more stable route.
3.4. Route Maintenance
After the stable route is discovered, the source node starts transferring data packets to destination
node and periodically checks the stability of the route discovered. At the destination node, the
best stability of the discovered route is obtained from received RSVs. During data transmission
via stable route, if any intermediate node becomes an unstable node (a node having its NSV less
than a predefined threshold value) at some instance of time, or a link/route breakage is detected
along this route, the intermediate node informs upstream node which initiates a local route
discovery process. If upstream node is unable to find new route, it sends rerouting request
(RERREQ) packet back to the source node which then initiates a new route discovery process in
order to discover another route to replace the earlier discovered one.
3.4.1. Link Breaking Avoidance Algorithm
For the route recoverability, we propose the Link Breaking Avoidance Scheme. In this scheme,
each node periodically calculates its NSV and transmits it to its neighbors through hello packets to
check the stability of the connecting route. During the transmission of data packets, if any
intermediate node‟s NSV is less than the threshold value β then intermediate node IN informs

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upstream node UN through unstable node detection (UND) packet. UN then reinitiates the route
discovery process.
In our route maintenance scheme, we introduce Unstable Node Detection (UND) packet, which is
send by the unstable (intermediate) node to its UN, for removal of unstable node. This UND
packet contains the sender node address, upstream node (UN) address, downstream node (DN)
address, source node address and destination node address.
Algorithm 3: Local_Route_Maintenance
Step 1:
If ( IN.NSV < β ) then
IN informs next immediate UN through UND packet.
Step 2:
If ( UN.NSV < β ) then
UN declares ROUTE ERROR, UN sends RERR packet to source node & destination. Source
node reinitiates route discovery process.
else
//UN checks own neighbor table.
If ( destination node is the neighbor node of UN ) then
UN removes IN from the existing path and updates the path.
UN forwards the all data packets to this updated path.
else
UN initiates the route discovery process to the DN.
4. PERFORMANCE EVALUATION
The performance of proposed RSAODV protocol is evaluated using simulation tool NS-2.35 [20]
and is compared with AODV routing protocol. The performance evaluation is done on the basis
of following performance parameters :
Packet delivery fraction: The ratio of the number of the successful arrived packets to the number
of all packets transmitted by source. The larger value indicates that the more data packets are
successfully delivered to destination.
End-to-end delay: The average time spent on data packet transmission from source to destination,
including all possible types of delay during the transmission.
Normalized routing load: The normalized routing load is measured by the total number of
routing packets sent divided by the number of routing packets delivered successfully.
Throughput: The throughput is defined as the total amount of data a receiver receives from the
sender divided by the time it takes for the receiver to get the last packet. The throughput is
measured in bits per second (bit/s or bps).
Route lifetime: The route lifetime is defined as the average time elapsed from route establishment
to route failure.
4.1. Performance Evaluation and Result Discussion
The performance of RSAODV is evaluated through simulation using NS-2.35 [20]. The
simulation network area is considered as 1000m × 1000m with 100 nodes in each simulation run

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out of which 49 act as sources and 71 as destinations. For a simulation run, the pause time is set
to 50s and simulation time is varied from 50s to 500s. Several simulation runs are performed for
the performance comparison of both the protocols RSAODV and AODV. The performance
comparison of these protocols is done on the basis of packet delivery fraction, end-to-end delay,
normalized routing load, throughput and route life time. Table 1 shows the simulation parameters
and their values for the study. The comparison results are presented in the pictorial form [Fig. 2a-
2e].
Table 1: Simulation Parameters
S. No. Simulation Parameters Value
1 Traffic Type CBR
2 Number of Nodes 100
3 Pause Time 50 s
4 Simulation Time 50 s to500 s
5 Total Sources and Connections 49 and 71 respectively
6 Maximum Speed of Nodes 20 m/s
7 Area of Network 1000 m × 1000 m
8 Packet Rate 10 pkts/s
9 Packet Size 512 byte
10 Mobility Model Random Mobility Model
Packet Delivery Fraction: Fig. 2a shows the comparison of RSAODV and AODV on the basis of
packet delivery fraction. It is observed that RSAODV and AODV have almost same packet
delivery fraction for simulation run time equal to 50s and as the simulation time increases there is
a drop in packet delivery fraction for both the protocols but the packet delivery fraction is
significantly higher for RSAODV as compared to AODV. During all simulation runs minimum
packet delivery fraction achieved for RSAODV is 86.65% whereas for AODV it is 81.34%.
In AODV routing protocol, when active route fails, the interface queue becomes full. This results
into a higher packet drop rate. To overcome this situation, proposed protocol RSAODV selects
the node in a path which has less traffic and sufficient energy. This mechanism reduces the
chances of route failure thereby improving packet delivery efficiency.
Figure 2a. Packet Delivery Fraction.
End-to-End delay: Fig. 2b shows the performance comparison of RSAODV and AODV
protocols for end-to-end delay parameter. The prime reasons for end-to-end delay are link failure

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and greater traffic load on intermediate nodes. In AODV, when an active link fails the local route
repair or re-route discovery process is initiated. During this period all data packets wait in a queue
thereby enhancing delay. The proposed protocol RSAODV incorporates the concept of „make
before break‟ to avoid such a situation. Here, if a node in active path has NSV less than the
threshold NSV, then it informs the upstream node to discover the new route. This mechanism
reduces waiting time of data packets resulting lesser end-to-end delay. Traffic load for a node also
has a significant effect on the end-to-end delay. In RSAODV, a node having less traffic is
selected to be an intermediate node during the path selection process whereas there is no such
type of mechanism in AODV for a node selection. As a result of this mechanism in RSAODV,
proposed protocol exhibits better performance as compared to AODV for end-to-end delay.
Figure 2b. End-to-End Delay.
Normalized Routing Load: Fig. 2c presents normalized routing load for RSAODV and AODV
protocols. The simulation results shows that RSAODV has a lower normalized routing load as
compared to AODV. Better performance of RSAODV is due to the lesser number of route breaks
in RSAODV as compared to those in AODV resulting in to lesser number of control packets flow
in the network.
Figure 2c. Normalized Routing Load.
Throughput: Fig. 2d shows comparison of RSAODV and AODV protocols on the basis of
throughput measured in kilobits per second (kbps). The data rate of CBR traffic pattern is 10

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packets/sec and the size of each packet is 512 bytes, thus a node transmits at 5Kbps data rate.
The RSAODV achieves higher throughput as compared to AODV in all simulation trials.
This is, again, due to incorporated mechanisms in RSAODV as fewer path breaks occur during
data packet transmissions in RSAODV as compared to those in AODV.
Figure 2d. Throughput.
Route Life Time: Fig. 2e depicts route life time for RSAODV and AODV protocols. The
proposed protocol RSAODV exhibit higher route life time as compared to AODV reflecting
establishment of more stable routes. The route life time is affected by the energy and speed of all
the nodes in a path. The route may fail if the energy of any of the intermediate node in a route
goes down due to more control packet transmissions or retransmissions of data packets. The other
reason of route failure is the movement of an intermediate node out from the transmission range
of other nodes involved in the route. RSAODV algorithm selects those nodes in the path which
has good energy and low mobility in the network. RSAODV takes into consideration the traffic in
the network in route generation resulting into less numbers of route failures. This enhances route
life time for data communication as depicted by Fig. 2e.
Figure 2e. Route Life Time.
5. CONCLUSION
This paper deals with the problem of unstable route for MANETs and presents a new route-stable
routing protocol RSAODV. Adding the route stability field to the RREQ packet in routing
protocol avoids selection of unstable routes automatically during establishing a route. A make
before break concept is proposed in the route repair mechanism of RSAODV. This is

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incorporated by introducing UND packet in RSAODV routing protocol. In the proposed routing
protocol a new route is found, as far as possible, before a route break occurs instead of initiating a
new source routing discovery as is done in AODV routing protocol. These provisions lead to an
improvement in AODV routing protocol. The study is based on several simulation runs
considering different performance evaluation metrics with varying pause times. We analyzed the
performance of AODV and RSAODV routing protocols on the basis of these metrics which
include packet delivery fraction, end-to-end delay, normalized routing load, throughput and route
life time. The simulation runs exhibit better results in favor of RSAODV protocol as compared to
AODV protocol. This is due to the proposed provisions which not only reduce the packet loss rate
and the end-to-end delay but also enhance the utilization of the network resources increasing the
throughput and average route lifetime.
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Authors
Sanjeev Kumar Prasad is an Assistant Professor in Department of Computer Application at
Ajay Kumar Garg Engineering College, Ghaziabad, an affiliated college of Uttar Pradesh
Technical University, Lucknow, (India). He received M. Tech. degree in Computer Science &
Engineering from Uttar Pradesh Technical University, Lucknow, (India) and he is pursuing
Ph.D. in Computer Science from Gurukula Kangri Vishwavidyalaya, Haridwar, (India). Before
joining this college, he has served many other colleges affiliated to Uttar Pradesh Technical University,
Lucknow, (India). He has got published 4 papers in international journals and 3 papers published in
international proceeding conferences. His areas of interest include Mobile Ad-Hoc Networks and Computer
Graphics.
Dr. Karamjit Bhatia is a Professor in Department of Computer Science at Gurukula Kangri
Vishwavidyalaya, Haridwar (India). He has got published 27 papers in conference
proceedings/ Journals of repute etc. He got his Masters degree in Physics from Garhwal
University, Srinagar, Garhwal (India) in 1986 and obtained his M. Phil. degree in Computer
Applications from University of Roorkee (now IIT), Roorkee (India) in 1988. He was
awarded Ph.D. in Computer Science from Gurukula Kangri Vishwavidyalaya, Haridwar (India) in 2001. He
has taught several papers at Under Graduate and Post Graduate levels. His areas of interest include
Distributed Systems, Mobile Ad-hoc Networks and Digital Image Processing.

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