黑莓機 科技郵差紅翻天
網路行動電話 將開放7張執照
固網以WiMAX申請用戶迴路 開放
星期三, 8月 24, 2005
星期六, 5月 28, 2005
星期六, 5月 21, 2005
5/28 Class
location management and routing for applications of
ad hoc / infrastructure and low/high mobility
Solutions:
infrastructure, low mobility -> Mobile IP
infrastructure, high mobility -> Cellular, Thin AP
ad hoc, low mobility -> Routing tables
ad hoc, high mobility -> ?
Lessons learned from
1. location management in Skype (Global Index, GI)
2. location management in OceanStore
Requirements of location management mechanism
1. no exhaustive search
2. bounded time to store location information at node(s)
3. bounded time to retrieve location information from node(s)
Reading Assignments:
Chap. 4 for general wireless Internet and
Section 4.3 for Mobile IP
There is a paper about Skype which you can find by scholar.google.com. This paper authored by Columbia University researcher explains their experiments on Skype and the findouts.
New products about Thin AP can be found at www.wi-fiplanet.com.
ad hoc / infrastructure and low/high mobility
Solutions:
infrastructure, low mobility -> Mobile IP
infrastructure, high mobility -> Cellular, Thin AP
ad hoc, low mobility -> Routing tables
ad hoc, high mobility -> ?
Lessons learned from
1. location management in Skype (Global Index, GI)
2. location management in OceanStore
Requirements of location management mechanism
1. no exhaustive search
2. bounded time to store location information at node(s)
3. bounded time to retrieve location information from node(s)
Reading Assignments:
Chap. 4 for general wireless Internet and
Section 4.3 for Mobile IP
There is a paper about Skype which you can find by scholar.google.com. This paper authored by Columbia University researcher explains their experiments on Skype and the findouts.
New products about Thin AP can be found at www.wi-fiplanet.com.
星期六, 5月 14, 2005
星期日, 5月 08, 2005
5/21 Class
Introduction to WiMax
Brief review of 2G and 3G (related report)
Reading Assignments:
Sec. 3.5, 3.6, 3.9
News update
手機功能多樣化 消費者最愛Wi-Fi與網路電話
WiMAX+VoIP 讓傳統電信業者提心吊膽
英國度假勝地啟用全市WiMAX網路
Brief review of 2G and 3G (related report)
Reading Assignments:
Sec. 3.5, 3.6, 3.9
News update
手機功能多樣化 消費者最愛Wi-Fi與網路電話
WiMAX+VoIP 讓傳統電信業者提心吊膽
英國度假勝地啟用全市WiMAX網路
星期六, 5月 07, 2005
5/7 Oral Presentation
1. Conclude your team analytical reports
2. Oral presentation and defense
NTT DoCoMo Vison 2010
Grid Computing
Related report
2. Oral presentation and defense
NTT DoCoMo Vison 2010
Grid Computing
Related report
星期六, 4月 16, 2005
4/16 Homework
Hit the net and go to the library to conduct research regarding the dimensions of wireless futures.
We have scheduled oral
presentations for each of you next time.
1. Compile your study at your own blog. However,
please post your titles of findings and links to your blog of search results
at the class agenda of 4/30.
2. As a backup plan, please keep your presentation materials in a storage media such as USB drive in case the radio signal is too weak to use in the classroom.
We have scheduled oral
presentations for each of you next time.
1. Compile your study at your own blog. However,
please post your titles of findings and links to your blog of search results
at the class agenda of 4/30.
2. As a backup plan, please keep your presentation materials in a storage media such as USB drive in case the radio signal is too weak to use in the classroom.
4/30 class
Use your blog to present the research you have done regarding the dimensions of wireless futures.
Second time of team meeting to conclude your team analytical reports and prepare for
the oral presentation and defense next week.
Second time of team meeting to conclude your team analytical reports and prepare for
the oral presentation and defense next week.
星期四, 4月 14, 2005
4/16 Class
2 video clips
NTT DoCoMo Vison 2010
MotoCycle+WiFi=Motoman
class discussion-
DIY futures of wireless worlds and develop a personal
Scenarios in the mobile world in 2015
Form of brainstorming activities
1. Organize a 2-person team
2. Each team work on the defining dimensions sheets handed out in class and go through the 14 dimensions.
In case both of you in a team cannot reach a common ground on any of the dimensions, just average your opinions with equal weights on the disagreed dimensions.
3. Based on your team judgements on each of the dimensions, profile a personal life in a day of the mobile world in 2015. This John or Mary in your story could be you, your family, or a total stranger as you wish.
4. Oral presentation and defense: One member of the team plays the role of analyst and presents orally the opinions in each dimension. The other plays the role of creator and presents the scenario of the imaginary personal story of life in 2015.
----
If you ask the right questions, you will come up with the answers you really want.
The difficulty does not lie in thinking out the great answers but in coming up with the good questions.
Analyzing is great but works best with creations.
NTT DoCoMo Vison 2010
MotoCycle+WiFi=Motoman
class discussion-
DIY futures of wireless worlds and develop a personal
Scenarios in the mobile world in 2015
Form of brainstorming activities
1. Organize a 2-person team
2. Each team work on the defining dimensions sheets handed out in class and go through the 14 dimensions.
In case both of you in a team cannot reach a common ground on any of the dimensions, just average your opinions with equal weights on the disagreed dimensions.
3. Based on your team judgements on each of the dimensions, profile a personal life in a day of the mobile world in 2015. This John or Mary in your story could be you, your family, or a total stranger as you wish.
4. Oral presentation and defense: One member of the team plays the role of analyst and presents orally the opinions in each dimension. The other plays the role of creator and presents the scenario of the imaginary personal story of life in 2015.
----
If you ask the right questions, you will come up with the answers you really want.
The difficulty does not lie in thinking out the great answers but in coming up with the good questions.
Analyzing is great but works best with creations.
星期六, 3月 26, 2005
3/26 Homework
Take a close look at the two Applets about CSMA/CA Simulations
http://wps.aw.com/aw_kurose_network_3/0,9212,1406346-,00.html
Reading Assignments:
Handout (G) Chapter 4.
(M) 2.1~2.3
(M) 2.5
(M) 2.6
http://wps.aw.com/aw_kurose_network_3/0,9212,1406346-,00.html
Reading Assignments:
Handout (G) Chapter 4.
(M) 2.1~2.3
(M) 2.5
(M) 2.6
星期六, 3月 19, 2005
星期六, 3月 12, 2005
3/12 Homework
1. Why is CSMA/CD not applicable in Aloha?
2. Briefly describe functions of Layer 1 to layer 4 of Network Architecture in OSI Reference Model. (Lecture 1 in Ref.)
3. List some of the major milestones of Internet history from 1960 to 2000.
Reading Assignments
Please read the following sections before we meet next time.
1. packet radio with Aloha in Lectures 13 & 14 of MIT Data Communication Networks Course
2. M1.12, M2.1~M2.5
2. Briefly describe functions of Layer 1 to layer 4 of Network Architecture in OSI Reference Model. (Lecture 1 in Ref.)
3. List some of the major milestones of Internet history from 1960 to 2000.
Reading Assignments
Please read the following sections before we meet next time.
1. packet radio with Aloha in Lectures 13 & 14 of MIT Data Communication Networks Course
2. M1.12, M2.1~M2.5
星期六, 3月 05, 2005
3/12 Class Agenda
Syllabus 5. OSI Model and TCP/IP Protocol Suite
(Textbook) 1.9 Computer Networks
1.10 Computer Network Software
1.11 OSI Reference Model
1.12 IEEE 802 Standard
packet radio with Aloha in Lectures 13 & 14 of MIT Data Communication Networks Course
(Textbook) 1.9 Computer Networks
1.10 Computer Network Software
1.11 OSI Reference Model
1.12 IEEE 802 Standard
packet radio with Aloha in Lectures 13 & 14 of MIT Data Communication Networks Course
3/5 Homework
3/5 Class agenda
Syllabus 3. A Perspective of Wired & Wireless Broadband Networks
LAN
802.3,
Point to Point WAN
ADSL, Cable Modem, T Lines, SONET,
Switched WAN
Frame Relay, ATM, FTTx,
WLAN
802.11 a/b/g, Wireless Mesh,
Syllabus 6. Underlying Technology at Physical Layers
Introduction to Spread Spectrum (J. Meel)
and applications
LAN
802.3,
Point to Point WAN
ADSL, Cable Modem, T Lines, SONET,
Switched WAN
Frame Relay, ATM, FTTx,
WLAN
802.11 a/b/g, Wireless Mesh,
Syllabus 6. Underlying Technology at Physical Layers
Introduction to Spread Spectrum (J. Meel)
and applications
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