Wireless Ecosystem

Running head: Wireless Communication 1
Wireless Ecosystem
Name of Student
Institution
Name of Instructor
Date

Wireless Communication 2
Wireless Communication
Section One
Question 1
ITU is tasked with the main function of coordinating the radio spectrum use internationally by
facilitating the telecommunication free from interference1. It is generally made up of three
sectors namely:
a) The radiocommunication
b) Telecommunication Standards and
c) The Telecommunication development
Question 2
The main function of IEEE is the promotion of the development of the electrotechnology and its
application in the sciences with the aim of benefiting humans and advancing the professionals.
The standards are 802.11a, 802.11b and 802.11n
Question 3
Internet Engineering Task Force mainly deals with the architecture of the internet evolution
together with its internet operations smoothly. The working groups are, dispatch, capport and the
cellar.
Question 4
1 Tse, D. and Viswanath, P., 2010. Fundamentals of wireless communication. Cambridge
university press.

Wireless Communication 3
The OLSRv2 is an extension of the OLSR protocol meant for optimization and the support for
the multiple topologies in routing2. This extension retains all the interoperability to the routers.
The main advantage of using this version is the fact that it uses metrics in selection of the routers
other than the hop routes which are minimal. On the other hand, this protocol is deficient in
nature whereby is uses only one single link for all the routers set in place.
Question 5
The Physical layer 802.16e describes the Mobile Broadband Wireless Access System that carry
data using the OFDMA and provides support to the modulation adaptation and the coding. This
adaptation allows the protocol to navigate between the good and the poor signal by interchanging
its own mechanisms.
Question 6
End to end Quality of Service in an end to end manner is ensure by WiMAX for the general
service involved classes 3. These are considered proposals and are described using the channel-
aware and the channel un-aware schedulers. For the channel ware schedulers, they need to be
aware of all the resources required and its requirements so that the flow of the schedule can be
easily optimized hence rearrangement can be done. While for the schedulers un-aware makes an
assumption of error free by making it an ease process for proving the Quality of Service. It
considers the surrounding conditions such as the level of power and loss rates.
2 Ade, S.A. and Tijare, P.A., 2010. Performance comparison of AODV, DSDV, OLSR and DSR
routing protocols in mobile ad hoc networks. International journal of information technology
and knowledge management, 2(2), pp.545-548.
3 So-In, C., Jain, R. and Tamimi, A.K., 2009. Scheduling in IEEE 802.16 e mobile WiMAX
networks: key issues and a survey. IEEE Journal on selected areas in communications, 27(2),
pp.156-171.

Wireless Communication 4
Question 7
IETF AODVv2 is unique in that in only build the requested routes hence avoiding the traffic.
Though this, tress is formed for the multicasting connection to be used for the members.
Messages are conveyed in routes only requested and back to the origin node. Since it forms a lot
of sequences it could be termed as tiresome. It passes back all the errors incase of a link failure.
I .
The hybrid ARQ uses several processes which are stop-and-wait in nature and allows a specific
time for known to both nodes without the need to send any signal. The algorithm undergoes
standardization for implementation of the process4.
Ii .
The MIMO operates by improving the wireless systems by increasing the throughput of data and
the range of the link with the little bandwidth or the power used for transmission by using several
antennas for transmitting signals of data in parallel modes. STC on the other hand improves the
transmission with the same principle of multiple antennas. Since the delivery is not guaranteed,
then a lot of data is sent.
Section Two
Question 1
4 Lin, S. and Yu, P.S., 2011. A hybrid ARQ scheme with parity retransmission for error control
of satellite channels. IEEE Transactions on Communications, 30(7), pp.1701-1719.