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Cluster-E and WiMAX Deployment Meetings at GEC7: Agenda and Notes

Tuesday, March 16, 1pm - 5pm

Room: Vista
Conference bridge: 866-453-5550 651 3886#
Meeting Number: 791 219 673
Meeting Password: GENInow01

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1:00pm, All

Update on WiMAX Base Station and WiMAX Client Platform Kits

1:05pm, Ivan Seskar:
Ivan on 3/1: Cables from roof to equipment room include: dual fiber; power; GPS receiver coax; within 1" dimaeter.
Ivan: Inclusion and choice of GPS antenna, for timing to base station
Candidate is PCTel GPS-TMG-SP-40NGPS timing reference antenna, with integrated lightning protection
ISSUE: Pick antenna with appropriate gain, and coax cable with appropriate attenuation.
Ivan on 3/16: One server uses kvm virtualization, with one VM per slice.
Use VLAN tags to identify flows between servers.
Expect to use Best Effort (BE) queue in WiMAX base station, so that can individually control flows in ASN GW.
Giovanni: Prefers zen for virtualization, since lightweight.
Max: Likes kvm virtualization, since easy to setup.
Ivan on 3/16: NEC antenna in kit is 120 degree antenna, intended to cover one sector.
If campus prefers 306 degree, omni-direcitonal antenna, needs to purchase separetely.
NOTE: Preference for each campus shown below.
ISSUE: Provide spec for uni-direcitonal antenna
Ivan on 3/16: Discussed and showed clients:
Intel 5130/5150 WiMAX modules, see
USB dongles
Samsung netbook
Samsung handset
Max on 3/16: Android handset has a virtualized micro kernel

Status and Plans of All GENI WiMAX Meso-scale Campus Deployment Projects

1:30pm, Harry Mussman, and all:
Included below are notes from 3/1 call, 3/16 meeting, and some recent calls or emails.
Information in Status is now updated.

Columbia University (1770) PI: Henning Schulzrinne
Henning on 2/8: Starting application process with IT. Likely site to be on engineering building, near amateur radio station.
Ivan on 3/1: Application completed.
ISSUE: Verify current status with Henning, antenna 360 or 120 degree?
ISSUE: Harry on 3/30: Concern about Clearwire rollout in NYC; see below.
Polytechnic Institute of NYU (1751) PI: Thanasis Korakis
Thanasis on 2/8: Starting applciation process. Likely site on EE building.
Thanasis on 3/1: Application completed 2/22, for two sites: EE and Admin buildings. Equipment expected in EE building.
Ivan on 3/1: Cables from roof to equipment room include: dual fiber; power; GPS receiver coax; within 1" dimaeter.
Thanasis on 3/16: Equipment in EE building 100m from antenna
Antenna 360 degree
ISSUE: Harry on 3/30: Concern about Clearwire rollout in NYC; see below.
UCLA (1797) PI: Mario Gerla, Giovanni Pau
Giovanni on 3/1: Applying for license. Likely site is top of student housing building, on a hill.
Giovanni on 3/16: Applying for license next week, up to 6 locations.
Expects to need 300m from antenna to equipment.
Antenna, 120 degree
Wisconsin (1724) PI: Suman Banerjee
Suman on 2/8: Have license, using it with current Cisco base station, owned by Educational Communications Board. Will be applying for a second license.
Have three good sites: one for Cisco, one for this kit, and would like to get a second kit for third site.
Suman on 3/1: Plan to apply for second license this week.
Suman on 3/16: Have agreement to purchase a 2nd kit from NEC. With this, will have three base stations, enough to cover the campus.
Antenna, 120 degree

UMass Amherst (1731) PI: Mark Corner, Brian Lynn
Brian on 2/8: IT has license that they want to retain. Mark has applied for a second license; pending.
Three possible sites: Top of library building, 20 stories, with equipment room in building. Top of graduate research center building, few stories, with equipment room in building. Top of CS building, few stories, without a good equipment room.
Brian on 3/1: Same as above; no news on license application.
Brian on 3/16: Received license last week! Need to pick site.
Antenna 360 or 120?
Need to virtualize clients, using zen
Colorado: (1768) PI: Dirk Grunwald, Gary Yee Univ. of Colorado, Boulder
Dirk on 2/8: Have eight sites with 802.11 antennas, ranging from high (6 km range) to low (within clutter of buildings). Another group on campus runs a WiMAX system inside a lab. Starting application process for experimental license. University has leased license to Clearwire, but may some use may still be possible.
Dirk on 3/1: Trying to understand how might use university license. Plan to apply for license this week. Have site and equipment room on Williams Village Building, less than 10m apart.
Gary on 3/16: Getting started on license.
Clearwire expected to begin service in Denver area May, 2010.
Also expect Clearwire to begin service in other areas by the end of 2010; see below.
Antenna 360 or 120 degree? Dirk and Gary on 3/26: In Denver area, Clearwire using E&F bands.
Expect Univ Colorado to lease 34MHz A1-3,B1-3 blocks to Clearwire near campus, and beyond.
Negotiating with Univ Colorado for 12MHz A4/B4 blocks near campus, but expect them to be leased to Clearwire beyond campus.
Applying for experimental license in C&D bands today
Working with campus IT on getting VLANs to Internet2
Turnup in early June, 2010 is possible.
Will contact Sprint/Clearwire, to ask about cooperation with GENI, and perhaps info on their 2010 and beyond roadmap
BBN Technologies, Cambridge MA
Tony Michel is our radio expert; Chaos Golubitsky is responsible for our testbed.
Tony on 2/8: See above and wiki page. Have applied for two licenses; pending. Site survey completed.
Tony on 3/1: Have received first license, 10MHz overlapping Sprint/Clearwire. Applied 1/12, received 2/24. Need to change emission designator.
Tony on 3/16: 360 degree antenna. Tony on 3/29: Received second license, 5MHz band, not overlapping with Clearwire

Stanford Univ
Masayoshi Kobayashi on 3/16: Currently, WiMAX site is indoors only, in the Gates building.
Have new agreement with Clearwire to utilize 5MHz of their spectrum for on-campus service.

NEC America
On 3/16: Currently indoors only.

Additional Campus Kits

Additional campus kits:
1st for BBN Technologies on order
2nd for Wisconsin on order

Kamesh Namuduri on 3/16: Univ North Texas interested in kit to do research

Ray on 3/16: Would prefer to get existing deployment underway, and then consider a 2nd round of kits beginning in 5+ mo.
New kits would be Profile C
Expect NEC would like to see orders for 40-50, if possible

Ivan on 3/16: Limited spares, from Rutgers and/or NEC

Ray on 3/16: Expect standard range information from NEC in 2+ weeks.
Max on 3/16: Should consider planning tools seen at 3G trade shows, to estimate ranges.

2:00pm, Dipankar (Ray) Raychaudhuri:

Discussion of rsearch use cases.
Also, send email to Harry, or input on the wiki; can help drive design of kit and software.

Rutgers/WINLAB on 3/16:
1) Cache and forward architecture; disconnected OK; multi-hop OK; protocol to know when to store, and when to forward; extend to campus users; content library
2) Vehicular; car to car; car to infrastrucutre; geo cache PtoP; protocol to detect cars and then send.
3) Locations service, assuming multiple WiMAX BSs.

UCLA on 3/16:
1) Vehicular networks
2) Applications: atmospheric science; public health; geo routing; store and forward.

Wisconsin on 3/16:
1) Internet access, over multipel interfaces and miultiple networks
2) Public emergency services; latency, cost, rate;

NYU Poly on 3/17:
1) Resource allocation with fairness. With physical layer measurements, such as signal-to-noise ratio (SNR) over different sub-channels, optimal resource management can be performed in the MAC layer for SSs at different locations. We will implement several conventional schedulers, e.g., Modified Deficit Round Robin (MDRR) to efficiently support different types of WiMAX traffic flows (UGS, rtPS, nrtPS, Best Effort). This work will focus on maximizing the overall system throughput, while assuring that each SS of predefined fairness in terms of data rate and delay constraint.
2) Cooperative transmission (multihop). One SS (here it may be a second BS or a virtualized second BS) may act as intermediate relay between an end SS and the BS. In the uplink, the relaying SS (second BS or a virtualized second BS) can intercept the signal from the end SS and then forward to the BS. Thus, the single-hop transmission is partitioned into two hops. By implementing and testing this function, we can show the performance enhancement of two-hop delivery over one-hop delivery in terms of either coverage extension or throughput improvement.
3) Cooperative Multicast real-time services. We will study the performance of multicast services in different setup of the testbed. We will measure the PER in different locations and study several schemes for the improvement of the QoS in different groups of stations, including cooperative schemes where particular clients will operate as relays and will forward the multicast streams to groups of stations with poor link quality. Video over wireless schemes will be developed and tested where application layer FEC or/and layered video schemes will be implemented.
4) Rate adaptation. We can test rate adaptation function in the open-source MAC layer driver. In response to the variation of physical layer channel, we can adjust the transmission rate of each SS adaptively such that a certain level of QoS can be guaranteed while the optimal data rate is maintained over time.
5) WiMAX/WiFi interconnection. Based on the fact that in the same Lab we operate a WiFi testbed similar to ORBIT, we are planning to investigate the dynamics of coexisting WiMAX and WiFi testbeds. In particular, we are planning to develop schemes where the clients of the network have two interfaces: one WiMAX and one WiFi. The clients are located relatively close to each other (in the same building) and they receive a video stream from the WiMAX BS. However, each client experiences different video quality due to the different packet errors at different locations. In order to improve the video quality, the clients setup an ad-hoc WiFi network. Each client buffers the video stream and figures our which packets are missing in a particular time window. Then it broadcasts requests to the ad-hoc network asking for the missing packets. Nodes that have those packets, reply by sending them to the node that initiated the process. In this way the wireless nodes recover the packets lost in their WiMAX interface though their WiFi interface.
6) Management of the WiMAX testbed. Since the WiMAX testbed will be used by several researchers in the University we will develop a managerial tool in order to give to researchers remote access and to make available particular parameters for defining and running experiments, collecting the results and monitoring the whole process. 7) Teaching purposes. Finally we are planning to use the WiMAX facility for teaching classes on wireless networks, wireless video applications and for several labs.

UMass Amherst of 3/16:
1) Integrate with current testbeds
2) Provide control over server side.

BBN Technologies:
1) When is WiMAX useful; ranges and capacities
2) Network management of entire system; utilize clients to measure and send reprots to the site.

2:30pm, break.

3:30pm, Gautam Bhanage, Max Ott, Ivan Seskar:

Tutorial on WiMAX setup, including how to use OMF

Basic "bringup" use case, for use on campus to verify installation; also useful for later regression tests?
Tutorial at Rutgers this summer, before GEC8?

3:00pm, Ivan Seskar:

Federation of testbeds on multiple campuses?
How to connect via backbone, i.e., Internet2 with Layer 2 connections, or Layer 2 tunnels?
How to control from a remote location?
Current Layer 2 connectivity from Ruthers/WINLAB to NICTA via Internet 2 and AARNET:

Demos for GEC8:

1) Multi-campus application, e.g, wideband video between handsets; distributed conferencing; video content distribution

2) Mobile connectivity: car to car, car to infrastructure via WiMAX

3) Portable switch for Layer 2 connectivity, client to switch via WiFi, switch to infrastructure via WiMAX; good for campus access.

4) Virtualized WiMAX provides emergency slice; adjust network utilization to assure good QoS for emergency slice; reassign to accomplish dynamic provisioning.

Clearwire deployments:

2009 rollout Atlanta, Baltimore, Chicago, Las Vegas and Philadelphia I-5 cooridoor in Portland, Eugene and Salem, Ore. In North Carolina, it has live networks in Charlotte, Greensboro and Raleigh as well as the surrounding cities. Hawaii launch includes not just the main city of Honolulu but the population centers on the island of Maui.

2010 plans Texas: Abilene, Amarillo, Austin, Corpus Christi, Dallas, Fort Worth, Houston, Killeen/Temple, Lubbock, Midland/Odessa, San Antonio, Waco and Wichita Falls

Boston, Denver, Kansas City, Los Angeles, Miami, New York City, San Francisco and Washington, D.C., are all scheduled for launch this year

Part of a 15-city plan targeting the country’s largest markets. In 2009,

4:30pm, adjourn

Note: Everyone is invited to attend Demo at ORBIT/WiMAX demo at demo session on 3/16, 5:30pm - 8:30pm

Ivan on 3/1:
1) Demo of mobile OMF with location based control and WiMAX support
2) Poster and table space for GENI BaseStation Kit hardware

Note: Everyone is invited to a WiMAX BOF dinner (or beer) event on Tuesday evening, starting at 8:45pm at Bull Durham Bar in the GEC hotel; please respond at

Wednesday, March 17, 1pm - 3pm

1:00pm, Ivan Seskar:

Answer questions from campus deployment projects

2:30pm, adjourn

Note: Each project is invited to attend the OMIS meeting at GEC7 on Wednesday, 3/17, 3:30pm - 5:30pm

One topic of discussion: GENI Security Plan, which will affect all operating aggregates by the end of Spiral 2

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