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بهبود پروتکل MAC در شبکه های WiGig
ماشین چی، پریسا Mashinchi Ghabel, Parisa
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بهبود پروتکل MAC در شبکه های WiGig
پدیدآور اصلی :
ماشین چی، پریسا Mashinchi Ghabel, Parisa
ناشر :
صنعتی شریف
سال انتشار :
1393
موضوع ها :
عدالت Justice آنتن جهت دار Directional Antenna استاندارد انجمن مهندسان برق و الکترونیک آ...
شماره راهنما :
52-46973
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Chapter1 Introduction
(13)
1.1 60 GHz frequency band
(13)
1.1.1 Advantages of the 60 GHz frequency band
(14)
1.1.2 Challenges of the 60GHz frequency band
(16)
1.2 Problem definition
(19)
1.3 Thesis outline
(19)
Chapter 2
(21)
2.1 Background and Outline of other works
(21)
2.2 Other works related to a defined problem
(23)
2.3 Fairness
(26)
Chapter 3
(27)
3.1 IEEE 802.11 WLANs
(27)
3.1.1 Components of the IEEE 802.11 architecture
(27)
3.1.2 Medium Access Control (MAC)
(28)
3.1.3 DCF procedure
(29)
3.1.4 Random backoff procedure
(29)
3.1.5 ACK mechanism
(30)
3.1.6 Management architecture
(30)
3.2 IEEE802.11ad
(31)
3.2.1 Component of IEEE802.11ad
(31)
3.2.2 MAC layer
(32)
3.2.2.1 Mac frame format
(32)
3.2.2.2 MAC architecture
(32)
3.2.2.3 DCF procedure
(34)
3.2.2.4 DMG channel access
(34)
3.2.3 Beamforming procedure
(35)
3.2.3.1 Beamforming in BTI
(38)
3.2.3.2 Beamforming in A-BFT
(39)
3.2.3.3 Beamforming after A-BFT
(40)
3.2.4 Physical layer
(40)
3.2.4.1 Calculating the BI time
(42)
3.2.5 Data unit
(45)
3.2.6 Channel
(46)
3.2.7 60 GHz Antennas
(46)
3.2.8 Calculation Link budget at the receiver
(49)
Chapter 4
(51)
4.1 Calculation
(51)
4.1.1 Fairness calculation
(51)
4.1.2 System Throughput calculation
(51)
4.1.3 Packet aggregation
(52)
4.1.4 Theoretical calculations of transmission
(53)
4.1.5 Calculation of beacon transmission interval (BTI)
(54)
4.1.6 Calculation of beamforming interval
(54)
4.1.7 Calculating DTI time
(55)
We have considered, Data transmission time consists of CBAPs. So, all STAs must contend to access the medium. We have obtained the BTI and A-BFT periods from two previous sections. As we consider the BI is equal to 0.1 second, the DTI periods are obta...
(55)
4.1.8 Antenna model
(55)
4.2 Solving Deafness in IEEE802.11ad
(56)
In the figure 4-2, we present the environment of our works. As shown the PCP is in the middle of the circle and the STAs have distributed randomly around it. In IEEE802.11ad the transmitter antenna is directional antenna and the receiver antenna is Qu...
(56)
4.2.1 Quasi Omni (QO) level 360degrees
(57)
4.2.2 Quasi Omni (QO) level 90 degree
(58)
4.2.3 Quasi Omni (QO) level 60 degrees
(60)
Fig 4-5.QO=60
(60)
4.2.4 Quasi Omni (QO) level 90 degrees with the Additional CTS frame
(61)
Chapter 5
(63)
Expansion of simulator
(63)
5.1 Implementation manner
(63)
5.1.1 Characteristics of Beesim simulator
(63)
5.1.2 Characteristics of expansion simulator
(64)
5.2 Data structure
(66)
5.3 Simulation Scenario
(67)
Chapter 6
(68)
6.1 Results according to the number of stations
(68)
6.2 Results according to the λ
(72)
In figure 6-4 the total throughput, according to the increasing rate of incoming packet from upper layer (λ), is shown. While the λ is increasing, the total throughput in four methods is also increased. That's because, with increasing the λ value, the...
(72)
6.3 Results according to the packet length
(74)
6.4 Summarized results
(75)
Chapter 7
(77)
Conclusion and future work
(77)
References
(78)