What's New in Wireless

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Kelley Houston
5 years ago
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1 What's New in Wireless Emerging Technology & Services Drew Lentz

2 The Last Year AC was the new hotness Sensors were starting to get more attention AI for WiFi was raising eyebrows IoT Location Services BLE

3 A Few Basics

11 Just because you can Doesn t mean you should

15 Spectrum Updates

17 C-Band Development Coming? GHz and GHz April 2018: a temporary freeze on applications for new or modified fixed satellite service (FSS) earth stations and fixed microwave stations in the GHz band. FCC New Docket: Expanding Flexible Use of the 3.7 to 4.2 GHz Band This summer, FCC should move to make available at least 200 or 300 megahertz of C-Band spectrum 2.4 is only 80 MHz total! Mainly Point to Multipoint use

18 CBRS What is CBRS? Why all the fuss? How can you benefit? Is anyone *really* doing this?

20 What is CBRS & Why is it important? Uses TD-LTE to provide a wireless voice and data service at 3.5GHz (3550MHz to 3700MHz) Spectrum Allocation Servers (SAS): Spectrum is assigned to operators or freely available like Wi-Fi, it is assigned as used via SAS Cells report their location to the SAS within 50m horizontally and 3m vertically Incumbent (Gov), Priority (no more than 70 of 150MHz will be allocated), General (Standard) Small fee for access to SAS Buy and deploy like Wi-Fi Fed to neutral host or peering partner Handsets? Samsung is now in.

22 Protocols, Standards, & Wi-Fi, Oh My!

23 802.11n Client on an AC Network Images by Wes Purvis / Cisco Systems / Available from #WLPC 2018

24 802.11ac Clients on an AC Network Images by Wes Purvis / Cisco Systems / Available from #WLPC 2018

25 3x3 vs 4x4 Images by Wes Purvis / Cisco Systems / Available from #WLPC 2018

26 802.11ax What makes it different Does that make it better? How soon?

28 Here's a joke about TCP. Here's a joke about TCP. Here's a joke about TCP. Here's a joke about TCP. Here's a joke about TCP. It s not funny until you get it.

29 Notes on QUIC Quick UDP Internet Connections Multiplexing connections Reducing round-trips QUIC clients would, for example, include the session negotiation information in the initial packet. QUIC + WIFI = TCP retransmissions on bad Wi-Fi make bad, worse

30 Notes from the Wi-Fi Alliance Please note, these are not *official* notes, but they are the things WFA is talking about and wants people to know :)

31 Vantage

32 4d. VANTAGE k/v/r i. Agile Multiband ii. Optimized Connectivity (.ai) iii. Passpoint Requires WiFi Multiband as a prerequisite 3. Optimizations 1.

33 4d. VANTAGE Optimizations Authentications a. Fast BSS b. FILS Shared Key Authentications c. FILS Higher Layer Protocol i. Encapsulates DHCP exchange within association request/response 1. Avoids IP outage in roam or network switch Transmissions for efficiency a. Estimated Service Parameters i. In beacon broadcast of airtime availability to allow clients to estimate achievable throughput per AP and choose the best AP b. Reduced WAN metrics i. In beacon broadcast of available backhaul for client c. RSSI-based association rejection

34 4a. Notes from WFA Vantage Agile Multiband (802.11k/v/r) Optimized Connectivity experience (802.11ai) Being released this year DPP - coming later this year (IOT) Secure enhancements for WPA2 and WPA3

35 Vantage: Agile Multiband Based on k/v/r Efficient use of spectrum and network resources Dynamic monitoring: client and AP collect and exchange information about the Wi-Fi radio environment to evaluate the best possible connection Intelligent steering: mechanisms allow AP to guide client device to recommended band, channel, or AP to balance network traffic or meet other management needs Fast transitions: enables devices to connect quickly with WPA2 security when roaming to improve experience with latency sensitive applications

36 Vantage: Wi-Fi Optimized Connectivity Enhanced network connectivity when roaming Based on ai Enables a wireless LAN client to achieve a secure link setup within 100ms. FILS: Fast Initial Link Setup Optimized network discovery: Improved scanning enables client devices to quickly discover available APs and networks Optimized authentication: Reduced overhead enables faster initial authentication to Wi-Fi networks Link quality assessment: Metrics help client devices quickly determine the AP or network providing the best connection Efficient transmissions: Allows devices to spend less time responding to network management traffic and more time moving user data

37 Vantage: Wi-Fi Optimized Connectivity Optimized Network Discovery Channel scanning prioritization AP Channel Report: AP performs periodic off-channel scan and broadcasts (in beacon) a list of channels on which it found another BSS, to help client devices prioritize their own channel scanning priorities Reduced Neighbor Report: AP broadcasts (in beacon) basic information about other BSSs it is operating on different bands, and optionally other neighboring BSSs, to help client devices optimize channel scanning Non-overlapping channels: APs operate on non-overlapping channels in 2.4 GHz when using automatic channel selection, to improve client device average AP discovery time and allow improved medium sharing

38 Vantage: Wi-Fi Optimized Connectivity Connect quickly Fast transition and authentication Fast BSS transition from Wi-Fi Agile Multiband FILS Shared Key Authentication: Fast authentication to any AP that is served by a common AAA server, based on a previous WPA2-Enterprise authentication, enabling fast initial connection to a Wi-Fi network, fast network switch from cellular to Wi-Fi, and fast switch between Wi-Fi networks FILS Higher Layer Protocol: Fast IP address assignment by encapsulating DHCP exchange within association request/response, avoiding IP connectivity outage in roam or network switch using FILS authentication

39 Vantage: Wi-Fi Optimized Connectivity Where and When to Roam Network assisted steering features from Wi-Fi Agile multiband Estimated Service Parameters: APs broadcast (in beacon) estimate of expected airtime available to a newly joining client device, so that clients can estimate over-the-air throughput achievable for each candidate AP (in same or different networks) and choose the best connection Reduced WAN metrics: APs broadcast (in beacon) the available backhaul capacity, so that clients can take this into account in estimating end-to-end connection quality for each candidate AP RSSI-based association rejection: APs are configurable to reject association by a client device if RSSI is below a configurable threshold

40 Vantage: Wi-Fi Optimized Connectivity Efficient Transmissions FILS Discovery frames: APs broadcast mini beacons providing basic information about a BSS including BSSID, hash of SSID (Short SSID), and time of next full Beacon frame to allow client devices to discover the best AP quickly using passive scan instead of sending probes (cont.) Broadcast Probe response: APs requested to send probe responses send them to the broadcast address so any other client devices that are listening may also receive them, avoiding retransmission overhead

41 Vantage: Wi-Fi Optimized Connectivity Efficient Transmissions Probe deferral and suppression: Client devices passively listen for at least 15 ms on each channel when scanning, receiving FILS Discovery frames, Beacons and (broadcast) probes. If the client subsequently needs to send a probe request (e.g. to scan legacy APs), it indicates the SSIDs or BSSIDs of APs from which it already has received information, in order to suppress probe responses from those APs Beacon / probe minimum transmission rates: The out-of-box rate setting is of 5.5 Mbps or higher, to minimize transmission of long inefficient beacons and probes at 1 and 2 Mbps rates

42 Vantage: Bullet points Can determine which AP to used based on airtime and backhaul availability Uses FILS for fast link setup including placing DHCP transaction in header Can seamlessly roam within same authentication group

43 WPA3 Introducing WPA3 More protection for users regardless of password complexity Easier, secure onboarding of IoT devices to Wi-Fi networks Higher level protection in open networks Minimum 192-bit security for sensitive environments

44 WPA3 Highlights Public Network Privacy Individualized data encryption through Opportunistic Wireless Encryption (OWE) IoT Enhancements Device Provisioning Protocol (DPP)? Unclear. A new, stronger handshake & Weak Password Protection Dragonfly (Simultaneous Authentication of Equals) during handshake - KRACK prevention Too many attempts = blocked user Timeline? Not sure.

45 802.11ax What is it What makes it different How soon?

46 802.11ax Enhancements Better coverage, more density, increased capacity Improved performance at the edge, even among overlapping networks Enhanced power efficiency Latest security (WPA3) 2.4GHz and 5GHz operation with backward compatibility

47 802.11ax Highlights New Modulations Schemes ax has a higher modulation scheme, moving from 256 QAM to 1024 QAM, which translates to better throughput and 25% higher capacity with 10 bits per symbol. UL MU-MIMO ac supports multiuser MIMO, but only in downlink mode. In contrast, ax adds uplink capability, so multiple users can upload video simultaneously. Dual carrier modulation Schedule-based rather than contention-based In ax, the access point dictates when a device will operate, thus handling clients more efficiently. Resource scheduling also significantly reduces the power consumption during sleep time, which improves battery life for clients.

48 802.11ax Highlights (cont.) Smaller Resource Units Subcarrier spacing is also reduced to khz, which is 25% of ac spacing, and the symbols are 4 times longer.

50 802.11ax / ac Comparison

51 Before the Install

52 5. Before the Install (:30) New Design Tool Enhancements Ekahau, Software, Sidekick ibwave Version 10 Cambium Link Planner Adrian s Tools

Ekahau Updates - 9.1 macos officially supported!

Continued updates on slew of bug-fixes More support for largest numbers

53 Ekahau Updates macos officially supported! BLE / Bluetooth support Real-time frequency monitoring using Sidekick Continued updates on slew of bug-fixes More support for largest numbers of APs and antennas to date Sidekick Measurement RF analysis Spectrum Analyzer Tons of future support

Antenna contouring with support for smart antennas Mobile app supports

54 ib Wave - 9/10 User interface update Cable tray / riser modeling - cable snap to CBRS support Dual 5GHz support Software selectable radio support Antenna contouring with support for smart antennas Mobile app supports CAT cable routing Some of the things I love: Cloud support Viewer support

55 Cambium Link Planner Great for outdoor networks PTP, PMP, and WiFi all-in-one Still Free Still cloud based, now on-premises as well

56 Ubiquiti AirLink

57 Equipment Updates

60 Cisco Wireless 1. Cisco 4800 AP a. 4 Radios i. 2 Radios: 4x4:3 1. Both Flexible Radio Assignment ii. 1 radio for packet capture scanning iii. 1 radio for hyperlocation b. Multi-gig - N Base-T 2. Cisco Assurance Platform

Aruba Networks 1. UAP-340 Dual Radio 4x4 802.

Supports up to 2,166 Mbps per radio in the 5 GHz band (with 4SS/VHT80 or 2SS/VHT160

61 Aruba Networks 1. UAP-340 Dual Radio 4x ac access point with Multi-User MIMO (wave 2) i. Supports up to 2,166 Mbps per radio in the 5 GHz band (with 4SS/VHT80 or 2SS/VHT160 clients) and up to 800 Mbps in the 2.4 GHz band (with 4SS/VHT40 clients) ii. Antenna polarization diversity (fixed) for optimized iii. Multi-gig - N Base-T

62 Ruckus One of the first to market 4x4: ac Wave 2 RX sensitivity -104dB

radio 5 x 1 Gbps Ethernet 2 x POE-Passthrough BLE

5dBi antenna 256 Clients / Ruckus H510 802.

radio 5 x 1 Gbps Ethernet 1 x POE-Passthrough

5dBi antenna 200 Clients / radio 4 x 1 Gbps

63 Wall Plates Cambium e430w ac Wave 2 2x2:2 MIMO 3dB antenna 256 Clients / radio 5 x 1 Gbps Ethernet 2 x POE-Passthrough BLE Aruba 303H ac Wave 2 2x2:2 MIMO 3.4dBi / 4.5dBi antenna 256 Clients / radio 5 x 1 Gbps Ethernet 2 x POE-Passthrough BLE Ruckus H ac Wave 2 2x2:2 MIMO 2dB antenna 100 Clients / radio 5 x 1 Gbps Ethernet 1 x POE-Passthrough Cisco ac Wave 2 2x2:2 MIMO 3.4dBi / 4.5dBi antenna 200 Clients / radio 4 x 1 Gbps Ethernet 1 x POE-Passthrough BLE

64 Open Networking and SDN for WiFi

Mojo and Edgecore The ECW5410-L is a concurrent dual-band 802.

Dual 4x4 Multi-User MIMO (MU-MIMO) radios Up to 600 Mbps and 1.

66 Mojo and Edgecore The ECW5410-L is a concurrent dual-band ac Wave 2 high-density access point. Dual 4x4 Multi-User MIMO (MU-MIMO) radios Up to 600 Mbps and 1.73 Gbps data rates 2.4GHz and 5GHz bands 802.3af PoE LAN port Bluetooth Low Energy (BLE)

67 Monitoring, Administration, Management

68 8. Monitoring, Administration, Management Artificial Intelligence a. Mist b. Rasa Sensors Continue to drive data a. Cape b. NetBeez c. WiFiAssure d. Wyebot e. Mojo

69 WiFi Assure

70 NetBeez

71 WyeBot

72 Mojo Networks Cognitive WiFi Platform

73 Looking forward..

Wi-Fi Technology; Where are we and what to expect (?)

Wi-Fi Technology; Where are we and what to expect (?) Dr. Srikanth Subramanian, CKO, Nanocell Networks Wi-Fi Rates and Speeds IEEE Standard 802.11 (1997) 802.11b (1999) 802.11a (1999) 802.11g (2003) 802.11n