WAVE ITS Station Technical Capabilities Summary February 2009 doc: IEEE 802.11-09/0238r1 March 2009 WAVE ITS Station Technical Capabilities Summary Date: 2009-03-12 Authors: R. Roy, Connexis R. Roy, SRA

Current Station Capabilities ? February 2009 doc: IEEE 802.11-09/0238r1 March 2009 Current Station Capabilities ? AP STA B-link (BSS link) STA R. Roy, Connexis R. Roy, SRA

Current Station Capabilities ? February 2009 doc: IEEE 802.11-09/0238r1 March 2009 Current Station Capabilities ? P-link STA STA (non-(i)BSS link) P ~ promiscuous R. Roy, Connexis R. Roy, SRA

Current Station Capabilities ? February 2009 doc: IEEE 802.11-09/0238r1 March 2009 Current Station Capabilities ? AP STA B-link P-link R. Roy, Connexis R. Roy, SRA

TGp Member Polls Can devices (802.11 STAs) communicate using B-links? February 2009 doc: IEEE 802.11-09/0238r1 March 2009 TGp Member Polls Can devices (802.11 STAs) communicate using B-links? YES: NO: Can devices (802.11 STAs) communicate using P-links? Can devices (802.11 STAs) communicate “simultaneously using ”* P-links and B-links? “Simultaneously using” means “sequentially queue” P-link and B-link frames for transmission. R. Roy, Connexis R. Roy, SRA

TGp Member Polls (continued) February 2009 doc: IEEE 802.11-09/0238r1 March 2009 TGp Member Polls (continued) IF YOU ANSWERED “NO” TO ANY OF THE PREVIOUS QUESTIONS: Do you believe there is a technical reason why devices (802.11 STAs) can not communicate over B-links? YES: NO: Do you believe there is a technical reason why devices (802.11 STAs) can not communicate over P-links? Do you believe there is a technical reason why devices (802.11 STAs) can not communicate “simultaneously using” B-links and P-links? “Simultaneously using” means “sequentially queue” P-link and B-link frames for transmission. R. Roy, Connexis R. Roy, SRA

TG Member Polls (continued) February 2009 doc: IEEE 802.11-09/0238r1 March 2009 TG Member Polls (continued) IF YOU ANSWERED YES TO ANY OF THE THREE QUESTIONS ON THE PREVIOUS SLIDE: Are you willing to provide either in writing or orally for the record the technical reasons you believe that such communications can not take place? YES: NO: IF YOU ANSWERED YES TO THE PREVIOUS QUESTION: Are you willing to commit to doing so before the next 802.11 wg meeting? R. Roy, Connexis R. Roy, SRA

Can devices (802.11 STAs) communicate using B-links? February 2009 doc: IEEE 802.11-09/0238r1 March 2009 WG Member Polls Can devices (802.11 STAs) communicate using B-links? Can devices (802.11 STAs) communicate using P-links? Can devices (802.11 STAs) communicate “simultaneously using”* P-links and B-links? “Simultaneously using” means “sequentially queue” P-link and B-link frames for transmission. R. Roy, Connexis R. Roy, SRA

WG Member Polls - Responses February 2009 doc: IEEE 802.11-09/0238r1 March 2009 WG Member Polls - Responses MEMBER Q1 Q2 Q3 George Vlantis (ST Micro) YES Richard Paine (TGk Chair) Ganesh Venkatesan (Intel) Roger Durand (Research in Motion) Bruce Kramer (Marvel, 802.11 WG Chair, TGn Chair) Andrew Myles (Cisco, WiFi Alliance Chair) Justin McNew (Kapsch-TrafficCom) (Implementation is not necessarily trivial.) Mark Hamilton (Polycom) Darwin Engwer (Nortel Networks) Alistair Malarky (Mark IV) Do not know R. Roy, Connexis R. Roy, SRA

A BIT OF HISTORY March 2009 February 2009 doc: IEEE 802.11-09/0238r1 R. Roy, Connexis R. Roy, SRA

Beacons are not transmitted on the Control Channel February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 3: 11-04-0135-01-wave-summary-recommendations-wave-using-802-11.ppt) Beacon Suppression Beacons are not transmitted on the Control Channel No network association; devices are not required to join a network prior to data transmission/reception (pseudo IBSS mode) … R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 3: 11-04-0135-01-wave-summary-recommendations-wave-using-802-11.ppt) Service Channels can utilize Beacons according to information received on the Control Channel (Control Channel mode is also permitted) Determined by upper layers (RSU service table) Typical 802.11 networks can be established on Service Channels R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 4: 11-04-0135-01-wave-summary-recommendations-wave-using-802-11.ppt) Authentication & Association Not permitted on the Control Channel Security Keys are managed by upper layers Permitted on Service Channels according to information received on the Control Channel R. Roy, Connexis R. Roy, SRA

Full range of QoS mechanisms can be used on the Service Channels February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 8: 11-04-0135-01-wave-summary-recommendations-wave-using-802-11.ppt) Priority Mechanisms Priority is needed to provide priority access to public safety applications, particularly on the Control Channel No Beacons, assumes simply the use of AIFS (802.11e) rather than using DIFS Full range of QoS mechanisms can be used on the Service Channels R. Roy, Connexis R. Roy, SRA

Unique MAC per radio (can use “virtual radios” – multiple MAC per PHY) February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 32: 11-04-0793-01-wave-wave-concepts-update-proposed-document-additions.ppt) Queue Routing Triggers Channelization function uses IPv6 destination address Based on destination MAC if unicast Based on IPv6 Prefix (and Subnet ID) if broadcast May need multicast address trigger May need multicast group address designation in PST Second radio required if more than one service channel used per RSU Unique MAC per radio (can use “virtual radios” – multiple MAC per PHY) Unique IPv6 prefix R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 32: 11-04-0793-01-wave-wave-concepts-update-proposed-document-additions.ppt) Channelization Overview Generalized Approach – One set of prioritized queues for each channel A simple implementation may support only one service channel at a time (single set of prioritized queues) R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (SLIDE 9: 11-04-0135-01-wave-summary-recommendations-wave-using-802-11.ppt) Summary Extra time associated with scanning and association has been removed by simplifying the MAC on the Control Channel, where all communication devices are initialized Service Channels can use “simple MAC” or extensive MAC features (e.g. 802.11e and i) 10 MHz channel parameters are consistent with 802.11j R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 (FROM SLIDE 3: 11-04-0135-01-wave-summary-recommendations-wave-using-802-11.ppt) Service Channels can utilize Beacons according to information received on the Control Channel (Control Channel mode is also permitted) Determined by upper layers (RSU service table) Typical 802.11 networks can be established on Service Channels R. Roy, Connexis R. Roy, SRA

THE PRESENT March 2009 February 2009 doc: IEEE 802.11-09/0238r1 R. Roy, Connexis R. Roy, SRA

March 2009 February 2009 doc: IEEE 802.11-09/0238r1 R. Roy, Connexis R. Roy, SRA

no additional hardware, by employing a virtual second WiFi interface. February 2009 doc: IEEE 802.11-09/0238r1 March 2009 FROM INTEL’s WEBSITE Intel® My WiFi Technology – Intel announced the availability of Intel My WiFi technology, a wireless driver and software update to Intel® Centrino® 2 processor technology based laptops. This software enables a WiFi Personal Area Network (PAN) for WiFi Certified™ consumer electronic devices such as photo frames, cameras and printers. Intel doubles the laptop’s WiFi capability, with no additional hardware, by employing a virtual second WiFi interface. The dual interface takes advantage of available Intel® 5100 WiFi Link and Intel® 5300 WiFi Link adapters as well as existing antennas to manage both Wireless LAN and WiFi PAN connections. Source: http://www.intel.com/pressroom/kits/events/ces2009/CES_FactSheet_Day1.pdf R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 CONCLUSION It is possible to implement “simultaneous” B-link (“inside”) and P-link (“outside the context of a BSS”) on currently available 802.11 STAs. R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 SUBMISSIONS The following submissions provide text changes to the latest 11p draft that attempt allow this functionality to be developed and be 802.11 compliant: 11-08-1375-03-000p-clause 5 changes.doc 11-09-0102-05-000p-clause 7 MAC frame header related changes.doc R. Roy, Connexis R. Roy, SRA

February 2009 doc: IEEE 802.11-09/0238r1 March 2009 TGp Member Polls Do you believe TGp should allow for currently available 802.11 STAs to “simultaneously” engage in B-link and P-link operations? YES: NO: R. Roy, Connexis R. Roy, SRA

TGp Member Polls IF YOU ANSWERED NO TO THE PREVIOUS QUESTION: February 2009 doc: IEEE 802.11-09/0238r1 March 2009 TGp Member Polls IF YOU ANSWERED NO TO THE PREVIOUS QUESTION: Are you willing to provide a valid technical reason why you do NOT believe TGp should allow for currently available 802.11 STAs to “simultaneously” engage in B-link and P-link operations? YES: NO: R. Roy, Connexis R. Roy, SRA