WiMAX MAC CPS Functionalities

The main functionalities of WiMAX MAC CPS are:

1. Network entry.
2. Connection management.
3. Quality of Service (QoS) control.
4. Air-link control
5. Protocol Data Unit (PDU) operation.
6. Mobility and power management.
7. Multicast and broadcast service.

The MAC CPS provides the fundamental MAC funtionality of system access, bandwidth allocation, connection establishment, and connection maintenance.

The MAC management messages are part of MAC CPS component. The IEEE 802.16 standard defines three types of connection for each messages those are broadcast connection messages, basic management connection messages, and primary management connection messages.

WiMAX IEEE 802.16 Standard

The worldwide Inter-operability for Microwave Access (WiMAX) is a telecommunication  technology based on IEEE 802.16 standard. WiMAX supports two types of network topologies which is Point-to-Multipoint (PMP) and Mesh. In the PMP, the link connection is only between Base Station (BS) and Subscriber Station (SS).

The standard was designed to evolve with media access control (MAC) layer consists of three sub layers. The three sub layers are:

1. Service specific convergence sub layer (CS)
2. MAC common part sub layer (CPS)
3. Security sub layer

WiMAX for 4G

IEEE 802.16m is currently a candidate for 4G and in competition with LTE. Both system are currently deployed in commercial.

To Experiment with Virtual Machines and ns-3

The related command to be use is as below:

sudo apt-get install vtun lxc

LXC refers to linux container. Please beware that it may conflict with your current network configuration.

Network Entry Phase Optimization for WiMAX Network.

Abstract:

In the last few years, there has been a large growth in wireless broadband communication including Worldwide Interoperability for Microwave Access (WiMAX) technologies. The network entry process in WiMAX is the first process for Subscriber Station (SS) to join the WiMAX network. It is refer to the early procedure performed by SS to register with Base Station (BS) that controls the WiMAX network. The problem of long channel scanning and collision in ranging process can lead to the delay to the access time for initialization and recovery of service between SS and BS connection. Most of the current approaches are focused on reducing the scanning time and optimizing the ranging process but nearly everyone has ignore the influence of system parameters setting. Through this research, a technique is proposed to be used for IEEE 802.16 WiMAX standard with consideration on WiMAX network entry system parameter settings. The simulation environment has been set up to test different configuration condition in WiMAX environment. The intention is to investigate and make recommendation for necessary configuration for IEEE 802.16 standard. Simulation are done using ns-3 simulator and the findings are presented. Simulation results indicate proposed optimum key parameter value with effect on QoS parameters that will allow the WiMAX network to operate in a higher level of performance and environments.

Connection ID

To support various multimedia applications, the IEEE 802.16 standard defines four specific types of service flows (UGS, rtPS, nrtPS, BE) that meet different user requirements.

Each connection between a subscriber or a mobile station (SS or MS) and a base station (BS) is identified as one service flow by the connection ID.

-J.-Y. Pan et. all

Microwave Network Transmission

What are we know about microwave transmission?

1. It is a technology of transmitting information or power.

2. It uses radio waves called microwaves.

3. It is widely used for point-to-point communication.