Parallel Restricted Polling Control For Wireless
Sensor Networks With Busy State
Zhijun Yang
1
,
2
, Yangyang Sun
1
1
School of Information Science and Engineering, Yunnan University, Kunming, China.
2
The Academy for Educational Science Research, Educational Department of Yunnan Province, Kunming, China.
E-mail:353738698@qq.com
Abstract—In view of the limited energy of nodesin wireless
sensor networks, from the perspective of improving the work
efficiency of the polling control system, this paper proposes a
parallel busy limited polling wireless sensor network control
protocol idle state.The mathematical modeling and analysis of the
parallel limited polling system with busy state is carried out. The
simulation results show the consistency and rationality of the
theoreticalanalysis and the simulation experiment. The polling
scheduling protocol for wireless sensor networkswith busy state
parallel scheduling mechanism provides a stable and reliable
guarantee for wirelessterminal with higher requirements for time
delay QoS.
Keywords—Wireless sensor networks; polling; busy state ;QoS;
I. INTRODUCTION
Polling mode has the advantages of no competition and
quantity of service (QoS), and it has been an important MAC
layer scheduling control method in communication
networks,especially in wireless communication networks[1],[2].
With the rapid development ofwireless sensor network (WSN)
and the Internet of things,polling is used to improve access
control,but in WSN nodes are limited by battery power.from
the pointof view of improving the system efficiency,a pa ralel
scheduling constrained polling system control protocol with
busy state[3],[4]is proposed in this paper The Limited (K=2)
service strategy for limited service system,because the average
queue length and average delay of the precise analytical
expression is the second order parameterso the limited service
system compared to the other two types of service system more
complicated and difficult to resolve,the researchers have
paidfor analytical system remains in polling system limited
service Limited (K=1) on the level of. For system
efficiency,The paper presents a great parallel scheduling
constrained (K=2) polling contr ol system with busy
state,which not only makes simulation experiments, but also
obtains accurate mathematical expressions of average queue
length and average delay. And compared with the Limited
(K=1) polling system in the important performance parameters
of the average queue length and average delay has been greatly
improved. To meet the delay requirements of high voice, video
and other business needs, not only the control system is stable
and good QoS security[5].
II .WIRELESS SENSOR NETWORK
Wireless sensor networks (WSN) is an application
orientedwireless network. In practical applications the
variability of the specific circumstances makes the types of
sensor networks vary widely[6],[7]Most of the sensor nodes in
the network time is in idle state[8],[9]and without the need of
data transmission, but sensor nodes usually uses battery
powered, which requires the MAC protocol first consider how
to save energy. The commonly used WSN protocol based on
polling scheduling considering all nodes within the system are
periodic query[10],[11] but not all nodes have data transfer
requirements so idle node query will consumption the energy.
A. MAC Frame Structure
The wireless sensor network system is redesigned as shown
in Fig.1
• State=0,Identifies the busy ring state at which the node
is located 0,Indicates that the node is in the idle ring
system queue.
• State=1,Identifies the busy ring state at which the node
is located 1,Indicates that the node is in busy ring
system queue
• Flag=0,Identifies the identity of the node with or without
service requirements 0,This means that the node has no
requirement.
• Flag=1,Identifies the identity of the node with or without
service requirements 1,Indictes that the node has service
requirements.