Outline. Overview of Wireless Access Research Laboratory. Mobility Management. Mobility Management. Mobility Management

Transcription

1 Outline Overview of Wireless Access Research Laboratory Ronan Skehill 21 st June 2005 Mobility Management Architecture Radio Resource Management Laboratory ULMAN Extend WLAN testbed 3G Conclusion 1 2 Mobility Management In-session mobility management Move during an active call Hand-off management Mobility Management Out-of-session mobility management Move in standby mode Location management Radio Resource Management Sector LA-1 LA

2 Network Architecture Node Architecture Mobility Management Transport Protocol Session Management Internet 3G/UMTS WLANs UMTS 5 6 Radio Resource Management Framework Summary Handover Management Measurements Admission Control RADIO RESOURCE MANAGEMENT RRM Congestion Control CN Power Management Bandwidth Management Code Management Channel Allocation Mobility Management and RRM are linked RRM Connection based functions. Handover Control (HC). Handles and makes the handover decisions. Controls the active. Power Control (PC). Maintains radio link quality. Minimizes and controls the power used in radio interface. RRM Network based functions. Admission control (AC). Handles all new incoming traffic. Check whether new connection can be admitted to the system and generates parameters for it. Occurs when new connection is set up as well during handovers and bearer modification. Load control (LC). Manages situation when system load exceeds the threshold and some counter measures have to be taken to get system back to a feasible load. Packet scheduler (PS). Handles all non real time traffic, (packet data users). It decides when a packet transmission is initiated and the bit rate to be used. Resource Manager (RM). Controller over logical resources. Radio Mapping 7 8 2

3 Logical Testbed View SPP SIP Proxy VoIP Server Signalling MIP Call Gateway Control ISP UoL Testbed Satellite FES x The Internet Broadcast Networks (DAB, DVB-T) PANS 3G/UMTS IP-based micro-mobility GSM / GPRS WLANs ULMAN & Milford 9 10 Testbed Bench Lab/F1 Extended/Virtual WLAN: ULMAN - Extended Low Power: BlackFin 3G ULMAN TB1 UWB/Tx/Rx Power Saving SPP/ CoMo / VoIP / SIP / MIP RRM / MM

4 Description ULMT Architecture Hardware/Software Test & Evaluation platform Wireless Technology Routing Protocols TCP Congestion VoIP Etc Scalable Controlled Hardware SBC PCM 9373 Via Eden chip 667Mhz 128Mb RAM 512 Flash Card PC104 Adapter Various wireless cards Software Hardware ULMAN Node PCM 9373 Board Schematic Wireless Cards 9cm 16cm PCM9373 PC104 Eden Processor Software: OS/App ISA Bus Memory Supports two PCMCIA Card 11cm Flash Card PS2 Chipset VT82C686B Chipset VT8606 PCI Bus VGA COM LAN Realtec Power supply

5 ULMT Architecture Software Interaction FTP, HTTP, NRTV Software Linux kernel Wireless driver (wlan_cs, airo_cs etc) Traffic Generators (Voice, Video, Data) netperf Routing Protocols (Currently Integrated) AODV OSLR DSR Lunar Traffic Monitoring CoMo Iptraf Tethereal Software Hardware Proactive Reactive Traffic Model Routing IP/MAC Monitoring Wireless Card Driver Wireless Card log \proc fs FlashDisk User Kernel Hardware ULMAN Protocol Stack AdHoc Routing Protocols Upper Layers TCP/IP LLC Proactive Ad Hoc Routing Protocols Hybrid Reactive PCF LLC DCF CS MAC CPS security MAC DSDV Table driven OLSR WRP Hybrid ZRP Source-initiated on-demand Infrared 1,2Mbs Diffused trans 0.85, 0.95nm FHSS 1,2Mb/s GHz 78chan 1MHz each DSSS 1,2Mb/s BPSK QPSK a OFDM 54Mb/s GHz 52 freq b HR DSSS 1,2, 5.5, 11 Mb/s GHz g OFDM 1,2mb/s BPSK QPSK OFDM 75Mbs 2 to 11 GHz PHY CGSR see part B of D23 AODV DSR TORA ABR SSR

6 Cloning Nodes Screenshot BIOS Setup Upgrade using USB Key Flash image Blank Node HOSTNAME IP Address Scripts ulman_launch Configure Flash Program Execute Deployed Nodes Demo

7 ULMAN Controller ULMAN Controller II Traffic: ITG VoIP VIC/RAT etc. etc. Controller GUI 25 Controller GUI 26 PROCESS INTERACTION BLOCK DIAGRAM GUI Screenshot ULMAN CONTROLLER ULMAN GUI Statistical Functions Log File Functions Control Functions Network Monitoring Tools Communication Clients SCP Client SSH Client ULMAN WIRELESS NODE Communication Server SSH Server Control Files Node Statistics Routing Tables

8 Example Configuration Real Voice Female Male Nortel Network Voice Database Evaluated using the PESQ method Various Configurations used Ronan J. Skehill, Dorel Picovici, and William Kent Wireless MANET Testbed for Reproducible Voice over IP Evaluation MeshNets, Budapest, July Results Infrastructure Mode Eth0: Eth1: Eth0: Eth1: AP Eth0: Eth1: To Core Network / UMTS Demonstrator etc. Eth0: Eth1: Eth0: Eth1: The ULMAN nodes can be used in Infrastructure mode also

9 Milford School Extended Testbed To Core Network / UMTS Demonstrator etc. Milford, Castletroy Eth0: Eth1: private net The wireless testbed extends outside the University of Limerick to a local primary school in Castletroy. Point-to-Point Bridge 12 wireless clients Milford Photo ULMAN External Testbed 11 Mps Directional Antenna Clare 11 Mps Directional Antenna 11 Mps Directional Antenna Killaloe Hub Murroe Murroe Hub 11 Mps Directional Antenna 11 Mbps Access Point Castletroy Wireless Server UL 11 Mbps Access Point 11 Mbps Access Point Limerick

10 Summary Open Dedicated Hardware/Software testbed. Currently ULMAN WLAN can be used to evaluate: Wireless technologies Routing protocols etc Future of ULMAN Mobility Management QoS Radio Resource Management etc. 3G/UMTS Demonstrator UMTS Block Architecture QoS in UMTS Traffic Class Fundamental Characteristic Conversational Class Preserve time relation (variation) between information entities of the stream Streaming Class Preserve time relation (variation) between information entities of the stream Interactive Class Request response pattern Preserve data integrity Background Class Destination is not expecting the data within a certain time Preserve data integrity Conversational pattern (stringent and low delay) Example of the Application Voice, videotelephony, video games Streaming multimedia Web browsing, network games Background download of s

11 QoS Framework 3G - LAB Client Application End-to-End Application: QoS requirements & adaptation Server API Client Application TCP/IP Traffic Control QoS Man.UE IP BS Man. RSVP UE UTRAN CN TCP/IP Traffic Control IP BS Man. Server RSVP TCP/IP Traffic Control QoS Man.UE Application Server UMTS Middleware UMTS UMTS GSM WLAN. Non-Access Stratum Driver UMTS BS Man. Non-Access Stratum Driver UMTS BS Man. Non Access Stratum End-to-End Bearer Service RANAP RANAP TE/MT Local External Bearer Service UMTS Bearer Service: UMTS QoS Bearer Service CN Radio Access Bearer Service Bearer Service Radio Bearer Iu Bearer Backbone Service Service Bearer Service CN Service Provider Network / TE CN MT UTRAN EDGE Gateway Internet PDCP RLC MAC RRC RRM-UE RRC RRM-UTRAN PHY PDCP RLC MAC Iu Emulation Access Stratum Testbed Characteristics (1) Flexible HW/SW tool that allows: To test innovative RRM algorithms in an easy way To provide QoS for standard non-aware QoS applications (i.e without modifying the application itself) To evaluate the performances of the associated signalling mechanisms To assume different scenarios (i.e layouts, propagation characteristics, traffic load conditions, service configurations, etc..) in an easy way. Testbed Characteristics (2) Testbed configuration including: Both rural and urban macro-cell scenarios. (In each scenario 14 trisectored sites are assumed). Up to 5000 simultaneous users can be allocated in the layout, and all of them are emulated in detail from the radio protocols point of view. The user under test can use any of the following applications: Conversational services (VIC and RAT for videoconference); Streaming (Mpeg4ip package); Interactive (Mozilla, Apache Web server) and Background (Mozilla/Qmail) For each application different PDP context with the corresponding QoS profile can be configured

12 Testbed Characteristics (3) 3G Demonstrator Integrated Testbed Managers and Tools Communications Manager allows transparent inter-module communication, session logging etc. 3G Graphical Management Tool allows centralised control of modules and off-line RRM algorithm validation Server, UE IBM Rack Servers UTRAN Cluster and CN Conclusion Open dedicated WLAN/3G laboratory Interoperability Emerging wireless systems Network protocol Network management strategies. Radio Resource Management QoS etc 47 12