Kommunikatsiooniteenuste arendus

Transcription

1 Kommunikatsiooniteenuste arendus IRT0080 Loeng 4/2013 Lähitoimeseadmed Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika instituut 1

2 Võrgutasemed

3 802.11af TVWS ac VHT 5GHz September 2012 IEEE Standards Pipeline MAC GLK PAD ai FILS aa Video Transport Smart Grid ae QoS Mgt Frames WNG ah aj CMMW PHY ad VHT 60 GHz Discussion Topics Study groups TG without Approved draft WG Letter Ballot Slide 3 Sponsor Ballot Published Amendment Published Standard

4 Summary of High level of investment and focus Most advanced technology First with OFDM and MIMO Widest channels (80 and 160 wide) Technology is spreading beyond LAN into MAN (802.11ah/af), NAN (smart grid),wan (carrier networks) and PAN Greatest economies of scale bringing low cost of devices LAN = local area networking MAN = metropolitan area networking PAN = personal area networking NAN = neighborhood area networks 4

5 PHY Project Sequence 100 Gbps 10 Gbps 1 Gbps 100 Mbps 10 Mbps milestones 10 year yardstick a b n g ad ac 1 Mbps Original milestones 100 Kbps

6 Available channels in 5 GHz band ; 8 channels available ; 11 channels available According to the ITU Radio Regulations, these bands are (currently) primarily for other users, not for RLANs

7 Channels in the 5GHz Band IEEE channel # FCC just allowed channel 144, creating additional 20, 40 and 80 channels in the US 5710 IEEE channel #

8 MS kavand (mesh)

9 Wireless Mesh Networks (W M N) (b) A Mesh Network Transit Access Point (TAP)

10 Route Discovery in AODV Protocol Source Hop1 Hop2 5 7 Hop3 8 Destination 4 6 Source (a) Propagation of Route Request (RREQ) Packet (b) Path Taken by the Route Reply (RREP) Packet Destination

11 Marsruudid

12 Intelligent Transportation Systems Crash avoidance Emergency electronic brake light Forward collision warning Blind spot warning / lane change warning Do not pass warning Left turn assist Safety assist Remote diagnosis (EV battery monitoring) Stopped vehicle or pedestrian warning Road condition warning Convenience p 5.9 GHz Toll collection Charging station guidance / info for EV Mobile commerce / mobile advertisement Web browsing, File (video, audio) downloading Do not pass 12

13 Forward radar Event data recorder (EDR) Positioning system Communication facility Display Computing platform Rear radar

14 Infohange ja -edastus Tamper-proof device ((( ))) Vehicle sensors (GPS, speed and acceleration, ) On-board CPU Transmission system

15 Vehicular Ad-hoc NETwork (VANET) Roadside base station Emergency event Inter-vehicle communications Vehicle-to-roadside communications

16 Liikluse haldus UMTS, WLAN, GSM, cdma2000, TETRA,... Personal Travel Assistant, laptop

17 Emerging Specifications Amendment Overview Transmission rate Specification Communication range User velocity Expected completion 11ac High Throughput w/ wider channels Up to 6.9 Gbps Dec/13 11ad High Throughput in 60 GHz band Up to 6.8 Gbps 10 m at 1 Gbps Oct/12 Done 11af Wi-Fi on TV White Space n/ac rates scaled to channel Up to 5 km Jun/14 11ah Sub 1 GHz > 100 kbps 1 km Jan/16 11ai Wi-Fi for mobile Fast initialization (target 100 ms) Target: km/h Mar/14 11aq Pre-association Discovery Select AP that provides needed services? 17

18 Võrk & ühendused Maturity Policy $$$ Cost $$$ Architecture Protocols Mobility Security Scalability QoS Bandwidth

19 Lingid Plum Jan2013 Future proofing Wi-Fi