Pervasive Wireless Scenarios and Research Challenges Spring 08 Research Review Jun 2, 2008

Size: px

Start display at page:

Download "Pervasive Wireless Scenarios and Research Challenges Spring 08 Research Review Jun 2, 2008"

Kerry Newton
5 years ago
Views:

1 Pervasive Wireless Scenarios and Research Challenges Spring 08 Research Review Jun 2, 2008 Prof. D. Raychaudhuri 1

2 Introduction: The Promise of Wireless Everywhere Wireless technology rapidly migrating from communications to a multitude of embedded real-world applications Tracking farm animals Wireless video surveillance Video cam detector V2V collision avoidance Kid finder Wireless cornea implant 2

Introduction: Pervasive Wireless will Enable Integration

Human in the Loop Application Management & Control

Internet) Protocol module Content & Location Aware

Computation Smart Public Space Hospital with Embedded

with Sensors & Wireless From Sensors Multiple radio

3 Introduction: Pervasive Wireless will Enable Integration of Physical World with the Internet Ambient interfaces Human in the Loop Application Management & Control Software To Actuators Global Pervasive Network (Future Internet) Protocol module Content & Location Aware Routers Computation & Storage Network Connectivity & Computation Smart Public Space Hospital with Embedded Monitoring Virtualized physical world object Vehicles with Sensors & Wireless From Sensors Multiple radio standards, Cognitive radios Autonomous Wireless Clusters ( ecosystems ) Robotics Application 3

4 Introduction: Wireless Network Evolution towards Pervasive Systems MSC Custom Mobile Infrastructure (e.g. GSM, 3G) BTS Public Switched Network (PSTN) BSC VOIP WLAN Access Point Internet (IP-based clean slate) Mobile network overlays, etc. Open BTS Infostation cache WLAN Hot-Spot Dynamic Spectrum Reuse Seamless Internet extension or just a local network?? CDMA, GSM or 3G radio access network Ad-hoc network extension Broadband Media cluster (e.g. UWB or MIMO) VOIP (dual-mode) ~2000 ~2010 and beyond Low-tier clusters (e.g. low power sensor) 4

5 Emerging Wireless Scenarios 5

Emerging Wireless Scenarios: Open Mobile Networks Open mobile products should

cellular routers will simplify Internet integration and enable heterogeneous

Overlay networks (built on IP tunnels) can provide new network functionality

6 Emerging Wireless Scenarios: Open Mobile Networks Open mobile products should promote new applications beyond cellular voice/data IP-based WiMax or cellular routers will simplify Internet integration and enable heterogeneous networks Open handset software for third party application development Overlay networks (built on IP tunnels) can provide new network functionality Open mobile alliance, Android, etc. Many new location aware applications being developed 6

Emerging Wireless Scenarios: Multi-Hop Access Networks Multi-hop/mesh networks help to expand coverage and serve lowpower devices Ad hoc mesh networks are required for vehicular & sensor applications

7 Emerging Wireless Scenarios: Multi-Hop Access Networks Multi-hop/mesh networks help to expand coverage and serve lowpower devices Ad hoc mesh networks are required for vehicular & sensor applications Metro area mesh WiFi networks an alternative to wide area cellular Technology involves new multi-hop routing & discovery protocols Cross-layer effects can be significant in dense mesh scenarios open research issues Wired Internet Infrastructure Mesh Router Mesh GW or AP Hierarchical Mesh Network The $49 Mesh Router from Meraki Networks 7

Cognitive Radio Frequency Time Amplidue (dbm)

than 6% Occupancy Medium Use Frequency (MHz)

coexistence needed as radio density increases

etiquette under consideration by FCC Dynamic

networking Spectrum Policy Server Data Signal

Spectrum Protocols For Coordination Next-gen

8 Atlanta New Orleans San Diego Emerging Wireless Scenarios: Dynamic Spectrum & Cognitive Radio Frequency Time Amplidue (dbm) Heavy Use Sparse Use Maximum Amplitudes Less than 6% Occupancy Medium Use Frequency (MHz) Heavy Use New techniques for spectrum coexistence needed as radio density increases Smart radios with fast scan, agility, etiquette under consideration by FCC Dynamic adaptation of radio (PHY/MAC) implications for networking Spectrum Policy Server Data Signal Spectrum Coordination Wired Internet Dynamic Spectrum Protocols For Coordination Next-gen wireless devices with dynamic spectrum capability (fast RF scan, agile, adaptive PHY/MAC) 8

9 Emerging Wireless Scenarios: P2P and DTN P2P and DTN network protocols expected to migrate from niche scenarios to wider usage Router mobility Network may be disconnected at times delay tolerant protocols Caching and opportunistic data delivery. In-network storage Content- and location- aware protocols Mobile DTN Router Internet WINLAB s i-media Prototype (2003) Opportunistic High-Speed Link (MB/s) Ad-Hoc Network Mobile DTN Router Roadway Sensors Static DTN Router Mobile P2P User 9

World Object or Event Sensor/ Actuator Relay Node Ad-Hoc Sensor Net B Sensor net scenarios involve: Large scale Limited CPU speed and transmit

10 Emerging Wireless Scenarios: Sensor Nets Compute & Storage Servers Pervasive Application Agents User interfaces for information & control Sensor net/ip gateway Mobile Internet (IP-based) Overlay Sensor Network Infrastructure 3G/4G BTS GW Ad-Hoc Sensor Net A Virtualized Physical World Object or Event Sensor/ Actuator Relay Node Ad-Hoc Sensor Net B Sensor net scenarios involve: Large scale Limited CPU speed and transmit power Intermittent connectivity, low-speeds, ad-hoc modes Location and content-awareness May involve closed loop control in real-time ZigBee, UWB, etc. 10

Emerging Wireless Scenarios: Vehicular Networks Passing vehicle, in radio range for tens of seconds Irrelevant vehicles in radio range for few seconds Following vehicle, in radio range for minutes

11 Emerging Wireless Scenarios: Vehicular Networks Passing vehicle, in radio range for tens of seconds Irrelevant vehicles in radio range for few seconds Following vehicle, in radio range for minutes Vehicle safety and information/convenience New p radio access standard Potentially high density Networking involves location awareness Ad hoc network formation and disconnections Network (group) mobility V2V and V2I modes Desired message delivery zone (Idealized) Broadcast range 11

12 Research Challenges 12

13 Pervasive Wireless: Research Challenges Technology foundations WiFi, WiMax, Bluetooth, Zigbee radios Sensor devices, RFID, active tags, Location determination systems (custom or infrastructure based) Dynamic spectrum management and cognitive radio Sensor network gateways, mesh relay nodes Architectures and protocols Geographic MAC, multicast and routing protocols Multi-hop wireless network protocols (MAC + routing) Location and content aware networks (overlay, clean-slate) Future Internet architecture for pervasive wireless 13

14 Pervasive Wireless: Research Challenges (cont.) Software technologies Privacy mechanisms, particularly location privacy Security for RFID systems, sensor nets, p2p nets, etc. Micro OS and distributed run-time environment; Open networks and virtualization Application domains Geographic search & mobile services Vehicular systems (V2V, V2I) Medical systems Social networks, p2p 14

15 Pervasive Wireless: Rutgers Activities Rutgers Computing Coordination Council (CCC) selected pervasive computing as a strategic theme for inter-departmental/center collaboration Involves CS, ECE and SCILS as well as WINLAB, Marine & Coastal, Center for Autonomic Computing, CAIT, others. Internal seed program with 7 projects funded, ranging from pervasive systems security to underwater glider coordination Workshops and colloquia WINLAB research Growing portfolio of pervasive wireless research projects Range of topics including spectrum issues, geographic MAC/routing, location technology, privacy and security to be covered in today s research review 15

Wireless, Mobile, Sensor Technologies and the Future Internet Aug 2, 2005

Wireless, Mobile, Sensor Technologies and the Future Internet Aug 2, 2005 Rutgers, The State University of New Jersey D. Raychaudhuri ray@winlab.rutgers.edu www.winlab.rutgers.edu 1 Introduction 2 Introduction: