WINLAB Dipankar Raychaudhuri and Ivan Seskar WINLAB, Rutgers, The State University of New Jersey Sampath Rangarajan, Meilong Jiang and Rajesh Mahindra NEC Laboratories America Contacts: {ray,seskar} at winlab dot rutgers dot edu {sampath,meilong, rajesh} at nec-labs dot com Open Virtualized WiMAX Base Station Node for GENI Wide- Area Wireless Deployments

WINLAB Project Objectives Demonstrate the GBSN capabilities in a phased manner, starting with controlled lab tests of each GENI feature and then migrating to a small-scale outdoor trial with off-the-shelf WiMAX terminal equipment. GENI terminals (WiMAX phone/PDA running GENI/Linux) Virtual GENI Router (at PoP) GENI Backbone Network GENI Access Network (Ethernet SW & Routers) GENI Compliant WIMAX Base Station Controller WiMAX Base Station (GBSN) Implement GENI-specific software on an external Linux-based PC WiMax Base Station Controller supporting: Virtualization slice setup Resource management L2/L3 programmability opt-in Develop an open/virtualizable WiMAX base station with external control and data API’s

WINLAB NEC WiMax Base Station PHY Access modeSOFDMA/TDD Frequency2535 ~ 2605 MHz DL:UL ratio35:12, 26:21, 29:18 Channel BW10 MHz, 8.75 MHz FFT size1024, 512 Frame duration5ms TX output Power35dBm (max) # of sectors3 MAC Head compression PHS ARQHARQ/CC, ARQ MBS supportSingle BS, multiple BS- MBS Resource management Power control, mode control (idle, sleep etc.) Networking IP protocolsIPv4, IPv6 Bridging/Routing Transparent L2 switch, Bridging Packet handling802.1Q VLAN, PHS**) rtPS real-time polling service ertPS enhanced real-time polling service nrtPS non real-time polling service UGS unsolicited grant service BE best effort Base Station Features Supported Service Classes

WINLAB Slice I Scheduling IP isolation Slice IISlice III NEC e Base Station GENI: Virtualized WiMax Network GENI Node (Linux PC) Certified (Virtualized) e Mobile Stations Classifier Custom ASN-GW Qos Manageme nt R6+ Network OPT GENI Open API  Maximum Bit-Rate, Burst-Rate  Minimum Tolerable Sending Bit-Rate  Maximum Tolerable jitter  Minimum Delay  Scheduling Type (e.g., UGS, rtPs,nrtPs)  Frequency of Operation  Rate / Power requirements Base Station State  Radio resources (UL and DL)  Time slots (UL and DL)  Downlink burst profile  Uplink burst profile  Frequency  Power  Rate Legend BS-IDU: Base Station indoor unit BS-ODU: Base Station outdoor unit R6+: Extension of standard ASN- GW-BS R6 interface OPT: Optical Link WiMax BS  Cell coverage: 0.5~6km diameter  Throughput 10~75Mbps  2~10 MS per sector/cell

WINLAB External PC Controller e Base Station Slice QoS GENI Slice Scheduling CID #N UGS BS DL-MAC Scheduler WiMAX Frame scheduler (RR, WRR etc.) CID #N Priority-based Scheduling ertPSrtPS nrtPS BE Open API interface e Common Packet Sublayer (CPS) Slice I Slice II Slice n  The WiMax BS MAC supports scheduling across multiple queues for five service classes.  The GENI slice scheduler will map “Rspec” requirements of slices to the appropriate queue.  key design issue is isolation between the GENI scheduler and the MAC scheduler  APIs to receive information about (“get”) and modify (“set”) MAC /PHY parameters  Information about mapping between CID (connection ID) and IP address/port number at the CS (convergence sub-layer)  Information about the QoS class for a CID (convergence sub-layer)  Modify priority of the queues at the scheduler, weights for weighted round-robin schedule (common packet sub-layer)  Queue lengths of per CID queue, delay at the queues, time for successful transmission (common packet sub-layer) (RR, WRR etc.) … …

WINLAB OMF Testbed(s) …. Control & Management Network Experiment Description Node 1 Node Agent Apps A Node X Console Node Handler Server(s) Aggregate Mngr DB Experimental Network(s) ML

WINLAB External PC Controller Node Agent Virtual Device Driver Application Node Agent Virtual Device Driver Application OMF Integration  OMF service for base station/slice scheduler control  Node Agent for experiment orchestration support  (WiMax) virtual device in each sliver Slice Scheduler OMF Service Base Station Controller R6+ Node Agent Virtual Device Driver Application

WINLAB BSR equipment with open API API validation & tests Year 1 1 Month NEC WiMax BS Delivered Roadmap: GENI Open WiMAX BS 2 Months START: Oct ‘08 3 Months4 Months5 Months6 Months Indoor results Outdoor results Received PicoChip WiMax BS Experience gained with Picochip prototype Pico-chip Wimax BS Lab prototype NEC Wimax BS Performance Evaluation NEC Wimax BS Performance Evaluation Custom ASN-GW: Implementation and Testing Custom ASN-GW: Implementation and Testing Base Station API OMF: ORBIT Management Framework Grid Services Implementation and Testing OMF: ORBIT Management Framework Grid Services Implementation and Testing API Version 1.0