Changes between Initial Version and Version 1 of WiMAX-4Q08-status

06/04/10 14:41:40 (11 years ago)



  • WiMAX-4Q08-status

    v1 v1  
     3= WiMAX Project Status Report =
     5Period: 4Q08
     7== I. Major accomplishments ==
     9=== A. Milestones achieved ===
     10__Milestones achieved:__[[BR]]
     12Task 1: !WiMAX BS performance evaluation
     13  1.1 NEC !WiMax profile A base station product delivered to Princeton Lab Per Sampath and Ray on 1/14/09: two were delivered, on loan from Stanford; two more were ordered, expected 2/10/09; when received, will send first two back to Stanford; overall, no delays in project - done Oct 20, 2008
     15  1.2 !WiMax BS system setup (indoor) - done Nov. 15, 2008
     17  1.3 NEC !WiMax indoor performance evaluation - done Dec. 15. 2008
     19  1.4 Testing NEC BS interfaces - BS/MS R1 - done Dec 24, 2008 - BS/ASN-GW R6 - in progress (due 1/09)
     21  1.5 NEC !WiMAX outdoor performance evaluation - moved to 4/09
     23  1.6 Experimental license for !WiMax obtained at Rutgers University - approved 12/08
     25Task 2. Custom ASN-GW implementation and testing
     26  2.1 Understanding NEC WiMAX BS interfaces - 80% complete (due 1/09)
     28  2.2 Understanding NEC ASN-GW functions - in progress (due 1/09)
     30Task 3. Base Station API software
     31  3.1 Open API requirements document - done Dec. 15. 2008
     33  3.2 Initial design of the open API: functions definition - in progress (due 1/09)
     35  3.3 Development of API software on GENI controller - starts 1Q09
     37=== B. Deliverables made ===
     40== II. Description of work performed during last quarter ==
     42=== A. Activities and findings ===
     43This project is aimed at the development of an open virtualized !WiMax base station
     44for wide-area wireless deployments in GENI. The technical approach leverages a commercial “profile A”
     45!WiMax base station product from NEC Corp as the starting point, with an open API being added for the
     46purpose of interfacing an external GENI controller that provides L2/L3 flexibility. As the next step,
     47software for the external GENI controller will be developed to support virtualization, experimental
     48programmability and control features. The prototype base station will be tested in the laboratory and then
     49deployed as part of the ORBIT campus network at Rutgers University.
     51During this reporting period (4Q08), the !WiMax base station was delivered on schedule to NEC’s lab in
     52Princeton and this equipment has been set up in the laboratory for initial testing and API development. The
     53NEC !WiMax base station is based on the IEEE 802.16-2005 standard, and is also compliant with the WiMAX
     54Forum Wave 2 system profiles. Basic operation of the base station has been validated in the lab, and the “R1”,
     55“R6” control interfaces and SNMP management interface have been studied for subsequent open API
     56development. An initial open API design document has been completed, and API software development
     57work for the external GENI controller has been started. No major technical or logistic hurdles have been
     58encountered on the project so far, and the work is progressing according to the original plan and time-line.
     59The only exception is the task on outdoor evaluation of the !WiMax base station which has been deferred to 4/09 in order to coincide with outdoor deployment activities. An experimental license for !WiMax operation
     60on the Rutgers campus was approved by the FCC in Dec 08. We plan to demonstrate basic GENI
     61functionality (virtualization, L2/L3 programmability, control of key base station parameters) for the base
     62station during 1Q09.
     64In terms of key findings, our initial tests with the laboratory setup of the NEC !WiMax base station show that
     65the selected equipment provides flexible service configuration, reliable transport and carrier-grade reliability. It also provides the necessary interfaces for open API design as required for GENI programmability and measurements. The base station features control and monitoring capabilities for key link layer parameters
     66(such as bandwidth, rate, modulation and coding scheme, link quality, scheduling priority, traffic class, etc.),
     67so that we expect to be able to design an open API with a high degree of experimental flexibility. One open
     68design issue still to be addressed is that of slice isolation and QoS management in the system as a whole. The
     69OFDMA MAC used in !WiMax makes it possible to assign resources on a per-flow basis, but there is
     70currently no support for aggregate slice level resource management with statistical multiplexing. We plan to
     71implement appropriate policies which balance slice isolation/QoS against overall bandwidth utilization as part
     72of the “resource manager” module in the external GENI controller. This will require further understanding
     73of the scheduling and queuing mechanisms currently used in the NEC base station along with experimental
     74evaluation of alternative slice management policies on the external controller. Another open issue is support
     75is for multiple slices on a single mobile !WiMax device running operating systems such as Linux or Android.
     77=== B. Project participants ===
     78Rutgers: Manasi Jagganathan, Ronak Daya (graduate students), Ivan Seskar, Dipankar Raychaudhuri[[BR]]
     79NEC: Meilong Jiang, Rajesh Mahindra, Sampath Rangarajan
     81=== C. Publications (individual and organizational) ===
     83__Internal project documents:__[[BR]]
     84  1. GENI !WiMax system engineering document, 11/08
     85  1. Open API specification document, 12/08
     87No external publications during this reporting period
     89=== D. Outreach activities ===
     92=== E. Collaborations ===
     93  1. Coordinating with Stanford U (Prof. Nick !McKeown) to make the same NEC !WiMax base station available for !OpenFlow campus network deployment.
     94  2. Collaborating with ORBIT project team to use the ORBIT Management Framework (OMF) software as the foundation for the !WiMax base station controller.
     96=== F. Other Contributions ===
     100Converted submitted file by Julia Taylor ( Original file can be found [ here]