03-08-2012, 04:05 PM
Cooperative System for 4G Wireless Communication Networks
[attachment=30103]
Abstract
Various services supports are the principal requirements of the Fourth Generation (4G) system; therefore, the need to improve
integration of heterogeneous networks is significant. This paper amends EVOLUTE (a project of Information Society Technologies (IST))
to strengthen mobility management. This paper uses Multicast-based Mobility (M&M) to aid Cellular IP (CIP) in micro-mobility
management. The aim of this paper is to produce complete integration of heterogeneous networks to support fine-fit mobility management
for seamless handoff. The cooperative M&M/CIP is suitable for macro-mobility management, proposed by EVOLUTE, to support
real-time and non-real-time data flow in micro-mobility management. Simulation results prove that the proposed system achieves good
performance than other existed methods.
INTRODUCTION
HE 4G mobile systems will be based on IP protocol
[1]. The transfer from voice communication to video
communication must be based on inherent technology and
economic benefits. Thus, these following four points must
be considered [2]:
1. Terminal mobility, session mobility, service mobility
and personal mobility must be supported by mobile
communication systems. Furthermore, mobility must
be available among heterogeneous networks, such as
Universal Mobile Telecommunication System
(UMTS), and Wireless LAN (WLAN), and even fixed
networks.
RELATED TECHNOLOGIES
A.Macro-mobility Management
The Internet Engineering Task Force (IETF)
standardized MIP protocol to support the Mobile Host
(MH) to have dynamic mobility between Internet and
wireless domains. There are two variations of MIP, IPv4
and IPv6.
The MIP [4] process has three main mechanisms,
namely agent discovery, registration, and tunneling. Home
Agent (HA) and Foreign Agent (FA) advertise their
presence by agent advertisement messages so they become
known by the MH. An MH requests an agent
advertisement message from the attached agent through an
agent request message and receives the agent
advertisements. Then, it decides whether it is on its home
network or on a foreign network. When MH detects it has
moved to a foreign network, it obtains a Care-of-Address
(CoA) from the foreign network. The CoA is the endpoint
of a tunnel toward the MH to receive the packets
forwarded by the HA while it is away from home. After
gaining a CoA, the MH registers its CoA with its HA to
obtain services. Packets sent to the MH’s home address
are intercepted and tunneled to the MH’s CoA by the HA.
SIMULATION
Simulation Environment
The simulation program was written in C++, and
adopts the cooperative CIP/M&M tactic. The system has
ten BSs (or APs), and then the average of the ten BSs (or
APs) is fetched as result of simulation. Each BS (or AP)
has 10−25 MHs, which randomly propose 1−3 real-time
or non-real-time requests. The real-time requests have
higher priority to obtain bandwidth than non-real-time
requests. The real-time requests are serviced by M&M and
non-real-time requests are serviced by CIP. The
simulation parameters are as follows (Refer to the
simulations in [11]−[14]). The real-time requests
randomly ask for sufficient bandwidth between 144−384
kb/s, whereas sufficient bandwidth for non-real-time
requests is between 4.75−12.2 kb/s.
[attachment=30103]
Abstract
Various services supports are the principal requirements of the Fourth Generation (4G) system; therefore, the need to improve
integration of heterogeneous networks is significant. This paper amends EVOLUTE (a project of Information Society Technologies (IST))
to strengthen mobility management. This paper uses Multicast-based Mobility (M&M) to aid Cellular IP (CIP) in micro-mobility
management. The aim of this paper is to produce complete integration of heterogeneous networks to support fine-fit mobility management
for seamless handoff. The cooperative M&M/CIP is suitable for macro-mobility management, proposed by EVOLUTE, to support
real-time and non-real-time data flow in micro-mobility management. Simulation results prove that the proposed system achieves good
performance than other existed methods.
INTRODUCTION
HE 4G mobile systems will be based on IP protocol
[1]. The transfer from voice communication to video
communication must be based on inherent technology and
economic benefits. Thus, these following four points must
be considered [2]:
1. Terminal mobility, session mobility, service mobility
and personal mobility must be supported by mobile
communication systems. Furthermore, mobility must
be available among heterogeneous networks, such as
Universal Mobile Telecommunication System
(UMTS), and Wireless LAN (WLAN), and even fixed
networks.
RELATED TECHNOLOGIES
A.Macro-mobility Management
The Internet Engineering Task Force (IETF)
standardized MIP protocol to support the Mobile Host
(MH) to have dynamic mobility between Internet and
wireless domains. There are two variations of MIP, IPv4
and IPv6.
The MIP [4] process has three main mechanisms,
namely agent discovery, registration, and tunneling. Home
Agent (HA) and Foreign Agent (FA) advertise their
presence by agent advertisement messages so they become
known by the MH. An MH requests an agent
advertisement message from the attached agent through an
agent request message and receives the agent
advertisements. Then, it decides whether it is on its home
network or on a foreign network. When MH detects it has
moved to a foreign network, it obtains a Care-of-Address
(CoA) from the foreign network. The CoA is the endpoint
of a tunnel toward the MH to receive the packets
forwarded by the HA while it is away from home. After
gaining a CoA, the MH registers its CoA with its HA to
obtain services. Packets sent to the MH’s home address
are intercepted and tunneled to the MH’s CoA by the HA.
SIMULATION
Simulation Environment
The simulation program was written in C++, and
adopts the cooperative CIP/M&M tactic. The system has
ten BSs (or APs), and then the average of the ten BSs (or
APs) is fetched as result of simulation. Each BS (or AP)
has 10−25 MHs, which randomly propose 1−3 real-time
or non-real-time requests. The real-time requests have
higher priority to obtain bandwidth than non-real-time
requests. The real-time requests are serviced by M&M and
non-real-time requests are serviced by CIP. The
simulation parameters are as follows (Refer to the
simulations in [11]−[14]). The real-time requests
randomly ask for sufficient bandwidth between 144−384
kb/s, whereas sufficient bandwidth for non-real-time
requests is between 4.75−12.2 kb/s.