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TRANSCRIPT
Presenter Information.Presenter Information.
Powered by Motorola 802.11n
All information in this All information in this Presentation is Presentation is
Motorola Confidential Motorola Confidential
and for INTERNAL USE only.and for INTERNAL USE only.
• Next Generation Wireless Networking Technology.
• Improves Throughput, Range & Reliability of 802.11 systems.
• Spatial OFDM, provides more efficient modulation techniques
• Wider 40 MHz channels provide twice the legacy transmission bandwidth.
• Multiple Input Multiple Output (MIMO) increases data rate.
• Frame Aggregation reduces transmission overhead.
What is 802.11n
• 2.4 GHz• 22 MHz Channel• DSSS & CCK• PSK Modulation
802.11b
• 2.4 GHz• 22 MHz Channel• OFDM Spreading• QAM and PSK
802.11g
• 5.0 GHz• 20 MHz Channel• OFDM• QAM Modulation
802.11a
• Multiple Input/Multiple Output System• 2.4 and 5.0 GHz ( 802.11a, 802.11g and 802.11b compatible)• 20 MHz or 40MHz Channel• Max Data Rate: Based on Configuration
802.11n
Introduction to 802.11n
• Multiple Simultaneous Tx• Multiple Simultaneous Rx
Multiple Spatial Streams
• 20 MHz• 20/40 MHz
Channel Width
• Deliver multiple frames• Reduce ACK overhead
AMPDU Aggregation + Block Ack
• Optimize throughput
Short Guard
• Single concatenated frame• Improve overall throughput
AMSDU Aggregation
• Minimum Idle time• Reduce overhead when transmitting
RIFS
• 11n clients must support at least 40MHz operation and AMPDU Aggregation to get best throughput
Factors that affect 11n throughput
MobileTerminal
Access Point
Multipath
Reflected Signal 1
Reflected Signal 2
Reflected Signal 3
Original Signal
Maximal Ratio Combining (N Spatial Stream(s) Received Over N+1 Antennas)
Receive Side Application
Multiple Receive Antennas
In Play When a N Spatial Stream(s) Received Over N+1 Antennas
Increases Effective Receiver Sensitivity
Even ABG Clients Benefit
Radio
Radio
DSP
Data
TX
RX
Multiple Receiver - MRC
Multiple Transmit Multiple ReceiveSpatial Multiplexing
Spatial Multiplexing (TxR: N)
Transmit & Receive Side Participation
Multiple Data Streams Multiplexed over Multiple Spatial Channels
Receiver Demultiplexes
Requires MIMO AP & MIMO Client
Highest Performance
TX
Radio
Radio
Data
DSP
DSP
BitSplit
RX
Radio
Radio
Data
DSP
DSP
BitMerge
Core FeaturesAdaptive Mesh
Spectrum Analysis
Client Rate Limiting
Router – WAN-LAN-WLAN Routing
Function
Stateful Packet Inspection Firewall, IP
Filtering
Integrated DHCP & AAA
Dual Band 802.11a/b/g & a/b/g/n Radios
Built-In Hotspot & Web Pages
Adaptive Mode OperationCan be adopted/ managed from a Wireless Switch
ManagementOver the Air F/W Upgrades
Auto Install
Web-Based Java UI
CLI & SNMP v1/v2/v3
RF Management Suite
Radio FeaturesDual radio 11n data rate operation with 802.3af
AP-7131 Radio Fully DFS 2 Compliant
IPSec VPN
Dual Band IPS Sensor
802.1q Trunking – VLAN
Support
About AP-7131
Target Verticals
Better coverage in tough multipath environments like warehouses, stores for 802.11abg handheld devices
Store of the Future Applications like Smart Carts with Location based advt. streaming
Multimedia Kiosks
Wireless Digital Signage
Video Surveillance
Retail SOHO Education Healthcare Manufacturing
Public Safety
Wireless enabled e-business applications
Video conferencing in meeting rooms
Fixed Mobile Convergence (FMC)
Point-to-Point bridging between buildings
Wired LAN Replacement
Wireless access in high density areas like classrooms and libraries with fewer access points
Video streaming of on-demand courses
E-Text Books and other digital media downloads.
Point-to-Point bridging between buildings
Hotspots: Student Internet access
Wireless access to medical imaging and patient records
Coverage improvement in high multipath areas
Point-to-Point bridging between buildings
Fixed Mobile Convergence
Hotspots: Internet access in high density areas like waiting rooms
DVR downloads from Police Cars
Video Surveillance
Fixed Mobile Convergence
Wireless sensor networks
Coverage improvement in high multipath areas
Point-to-Point bridging between buildings
Fixed Mobile Convergence
Video Surveillance
Agenda
NEW 4.0 Releases– Tri-Radio product support
– 3rd Radio Sensor support
– Spectrum Analysis
– IPSec for VPN
– IP Filtering
– WLAN Rate Limiting
– Per Radio Client Limit
– Power Management
Outdoor Solution– AP-7131 NEMA Enclosure Update
Product Pricing
Motorola AP-7131
Industry’s First 802.11n Adaptive Services AP for Concurrent Services
Radio 1
Client Access and Mesh in 2.4GHz
---- or -----
Dual-band WIPS
Radio 3
Dual Band WIPS
Spectrum Analyzer
3G backhaul
Faster ROI: $300 - $400 cost savings per Sensor AP
Radio 2
Client access and Mesh in
5GHz---- or ----
Dual-band WIPS
Plenum Rated Aluminum Alloy Casing
3 x 3 : 2 MIMO capability
Detachable Plastic façade
6 LED’s
AC Power Connector
2 Gig-Ethernet Ports. 1 Power over Ethernet
RJ45 Console Cable(Optional Plastic façade with integrated antenna elements – Not shown here)
3rd Radio Sensor
Antenna
AP-7131 Specs
Click on Quick Setup1
Provide a System Name2
Select Country Code3
Provide Time Server IP address4
Provide WIPS Server IP address5
Select Radio Configuration6
AP-7131 Tri-Radio Quick Setup
Skip Step 5 if there is no WIPS server
AP-7131 Features
Summary of Current Features
• Adaptive AP Mesh
• Hotspot
• Power Utilization
Enhancements
• WIPS
• Stateful Firewall, WPA2 Support
• Integrated DHCP, AAA Server
• Hotspot
• 802.1q Trunking
• RFMS Support
• QoS WMM
New Features in 4.0
• Tri-Radio product support
• 3rd Radio Sensor support
• Spectrum Analysis
• IPSec for VPN
• IP Filtering
•WLAN rate limiting
• Per Radio Client Limit
Dual Radio AP-7131
- Dual band a/b/g/n radios- 3 x 3: 2 MIMO Performance- Continuous full-band WIPS sensing-
Tri Radio AP-7131
- Dual band a/b/g/n radios- 3 x 3: 2 MIMO Performance- Integrated WIPS sensor- High Tx power of 27.7mW across 3 chains
3G AP-7131
- Dual band a/b/g/n radios- 3 x 3: 2 MIMO Performance- Integrated 3G card support for WAN backhaul
3G cards and features will be supported in next release
AP-7131 Product Skus
Scenario 3
AP-7131 with Integrated WIPS Sensor
Continuous Scanning with integrated WIPS
Scenario 2AP-300 Access Point
AP-300 Sensor
AP-300 Access Point
Continuous Scanning with additional hardware
Scenario 1
AP with WIPS sensing feature
Part-time Scanning solution
WIPS Sensor coverage RF Coverage
Motorola AirDefense WIPS Sensing on AP-7131
Spectrum Analysis
FULL SCAN
CLASSIFY INTERFERENCE
SOURCES
Physical Layer Troubleshooting
-Detect non-802.11 interference - Microwave, Bluetooth, Frequency Hoping Device, etc.
- 2.4 and 5.0 GHz Band Support
- Remote Real-time Spectrograms
Automated Interference Detection
- Use Existing Sensors – No Special Hardware Needed
- Remote Detection of Interference
- Automatic Interference Alarms
- Improve Wireless Performance
AP-7131
Client
H.Q.
Internet
11n APVPN Appliance
Client
H.Q.
Internet
IPSec VPN
Challenges
-Secure access requires additional hardware
- Low ROI due to multiple hardware support
AP-7131 Benefits
- Network-in-a-box integrated solution
-Secure access to the H.Q.
IPSec VPN
Select VPN1
Add VPN Tunnel2
Provide Tunnel Name3
Select Interface Name4
Provide Local WAN IP5
Provide Remote Subnet6
Provide Remote Subnet Mask7
Provide Remote IP Gateway8
Click Apply9
Server 1IP: 192.168.1.10
IP Filtering
Challenges
- Application based security at the edge of network
- Provide controlled network environment for client access
WLAN Coverag
e
Switch
Client AIP:
192.168.1.101
Client BIP:
192.168.1.102
1. Requesting access to server
2. Access to server granted
IP Filtering: Disabled
Client A and Client B are part of same WLAN
Server 1IP: 192.168.1.10
IP Filtering
AP-7131 Benefits
- Provides ability to manage client associations based on applications
- Provides controlled wireless network environment for client access.
IP Filtering: Enabled
Client A and Client B are part of same WLAN
WLAN Coverag
e
Switch
Client AIP:
192.168.1.101
Client BIP:
192.168.1.102
1. Requesting access to server
2. Access to server denied
IP Filtering
Select IP Filter1
Add Filter2
Edit Filter Properties3
Click Apply4
Select Wireless5
Edit WLAN6
Enable IP Filtering4
Edit IP Filtering4
Edit Applied Filter properties4
Click Ok4
WLAN Rate Limiting
AP-7131 Benefits
- Provide fixed limit for each client in a given WLAN
- Rate-limiting does not depend on priority or number of clients associated to the AP
WLAN 2: Silver MembersWLAN 1: Gold Members
Downstream: 3 MbpsUpstream: 1 Mbps
Downstream: 1 MbpsUpstream: 0.5 Mbps
Internet
AP-7131
WLAN Rate Limiting
Select Wireless1
Create a WLAN2
Select WLAN3
Edit WLAN4
Enable Rate Limiting5
Enter appropriate rates6
Click Apply7
Per-Radio Client Limit
Internet
WLAN Coverag
e
AP-7131 Benefits
- Enables the user to limit number of clients that can associate per radio
- Maintain high quality of service with associated clients
Per-Radio Client Limit
Select Radio Configuration1
Select desired Radio2
Enter number of MUs allowed3
Click Apply4
Power Management: AP-7131 Summary
PowerAP
TypeRadio 1 Radio 2 Radio 3 LAN 1 LAN 2
3AF
Single-Radio ● ●
Dual-Radio ● ● ●Dual-Radio
Express Card
● ● ●
Tri-Radio ● ● ●
PowerAP
TypeRadio 1 Radio 2 Radio 3 LAN 1 LAN 2
3ATto Full
Power
Single-Radio ● ● ●
Dual-Radio ● ● ● ●Dual-Radio
Express Card
● ● ● ●
Tri-Radio ● ● ● ● ●
Power Management for Tri-Radio AP-7131:
Tri-RadioTri-
Radio
FrequencyFrequency
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHzOR
5.0 GHz
2.4 GHzOR
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
3AF3AF
3AT3AT
PowerPowerPower-Mode
Power-Mode
DefaultDefault
OptionOption
DefaultDefault
OptionOption 2.4 GHz2.4 GHz
= Power Increase= Power Increase
Power Management for Express Card AP-7131:
ExpressCard
ExpressCard
FrequencyFrequency
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
2.4 GHz&
5.0 GHz
3AF3AF
3AT3AT
PowerPowerPower-Mode
Power-Mode
DefaultDefault
DefaultDefault
OptionOption
= Power Increase= Power Increase
Power Settings
Select “System Configuration”1
Select “Power Settings” Option2
Select “Power Mode”3
Select “Default” or “Option”4
Select Options“Radio 1” or “Radio 2”
5
Click Apply6
1. There are 3 types of power modes, auto, 3af, and 3at, that are provided as options based on APs Power Status.
2. Select “Default” or “Option” mode for selected power mode. Note, “Option” increases transmit power.
3. Select Default Radio to which the power settings need to be applied. Note, this is only applicable for Tri-Radio.
AP-7131 Product Pricings
Part Number Description List Price
AP-7131N-66S78-WWAP-7131: Tri Radio 802.11n Access Point, 6 element Facade antenna Module, with QIG.*
$ 1,699
AP-7131N-66S70-WR AP-7131: Tri-Radio 802.11n Access Point, with QIG* $ 1,649
AP-7131N-66S78-USAP-7131: Tri Radio 802.11n Access Point, 6 element Facade antenna Module, with QIG (US Only)
$ 1,699
AP-7131N-66S70-US AP-7131: Tri-Radio 802.11n Access Point, with QIG (US Only) $ 1,649
AP-7131N-66E48-WWAP-7131: Dual Radio 802.11n Access Point w/ Integrated ExpCard Slot, 6 element Facade antenna Module, with QIG.*
$ 1,349
AP-7131N-66E40-WRAP-7131: Dual Radio 802.11n Access Point w/ Integrated ExpCard Slot, with QIG.*
$ 1,299
AP-7131N-66E48-USAP-7131: Dual Radio 802.11n Access Point w/ Integrated ExpCard Slot, 6 element Facade antenna Module, with QIG (US Only)
$ 1,349
AP-7131N-66E40-USAP-7131: Dual Radio 802.11n Access Point w/ Integrated ExpCard Slot, with QIG (US Only)
$ 1,299
* AP-7131N-xxxxx-WR or AP-7131N-xxxxx-WW SKUs cannot be ordered in the US
New Antennas: Pricing & Availability
Part Number Description List Price
ML-2452-HPA5-036Dual-Band Outdoor Omni antenna, Gain: 3.9 dBi @ 2.4GHz, 5.7 dBi @ 5.5GHz
$ 249
ML-2452-PNL9M3-036Dual-Band Outdoor Sector antenna, Gain: 8 dBi @ 2.4GHz, 10.7 dBi @ 5.5GHz
$ 800
ML-5299-BYGA15-012 5GHz Yagi Outdoor antenna, Gain: 14.5 dBi $ 285
Availability for ML-2452-PNL9M3-036 and ML-5299-BYGA15-012- Rev A (Release Date): Mid-Q3
Capabilities AP300 AP5131 AP5181 AP7131
802.11 a/b/g ● ● ● ●Centrally managed large scale deployments ● ● ● ●
Built in management ● ● ●Mesh ● ● ●Adaptive AP w/ site survivability ● ● ●
Voice optimized ● ● ●
Harsh outdoor ●NEMA
enclosure options
Switch Managed Only ●802.11 a/b/g/n & Tri-radio ●Concurrent sensor & data ●Spectrum Analysis, AP Testing, VA ●
Motorola AP Suite
REQUIREMENTMOT 7131
Aruba 124 C1140
C1250
A/B/G/N AP
Dual Radio
Tri-Radio
Dual-band Sensing on 2.4GHz and 5.2GHz
802.3af Compliance & Performance
Network and Layer 3 Services
Dual Gigabit Ethernet LAN/WAN
Adaptive Site Survivability
Performance
Mesh
Only Motorola Offers Full-Time Concurrent Infrastructure & Sensing, Mesh, Adaptive Site Survivability and Network Services
Excellent
Average
Good
Poor
Non Existent
Motorola 802.11n – Beats Competition
Thank You.Thank You.
Current FeaturesRouter – Wireless Router with 2 GigEthernet Ports
Stateful Firewall, WPA2 Support (PCI Compliance)
Integrated DHCP, AAA Radius Server, Hotspot Gateway
802.1q Trunking – VLAN Support
Site-to-Site IPSec VPN – Secure Backhaul to Corporate
Wireless MESH (for hard-to-wire areas)
WMM QOS
Dual Band DFS Compliant 802.11n Radios
Multi BSSID, 16 WLAN’s
Bandwidth Allocation per WLAN
Adaptive AP Mode (can be managed from Wireless Switch)*
Key Features from FW 3.2
* Motorola AirDefense Enterprise version 7.3.3 or higher is required to support the AP-7131 as WIPS Sensor for monitoring and policy enforcement of 802.11n infrastructure. Supported features include: alarm detection, 802.11 a/b/g/n protocol analysis, LiveView, forensic analysis, and location tracking.
** Supported only on Motorola wireless switches with Wi-NG version 4.0 . For Adaptive AP support on AP-7131 version 3.2 is required. Wi-NG version 4.0 will also support Adaptive WIPS sensor configuration and management on AP-7131 version 3.2.
New Features with 3.2
Air Defense Wireless Intrusion Prevention Sensor (WIPS)
Adaptive AP Mesh
Power Utilization Enhancements
RFMS Support
Hotspot
AP-7131 supports dedicated full-band WIPS sensing.*
AP-7131 Mesh architecture can be centrally managed by a switch.**
AP-7131 enables high performance dual radio operations with 802.3af.
Dependent mode AP-7131s can be managed using RFMS ver. 3.1or higher.
AP-7131 enables guest access with authentication services provided by an external Radius/AAA server.
Scenario 3
AP-7131 with Integrated WIPS Sensor
Continuous Scanning with integrated WIPS
Scenario 2AP-300 Access Point
AP-300 Sensor
AP-300 Access Point
Continuous Scanning with additional hardware
Scenario 1
AP with WIPS sensing feature
Part-time Scanning solution
Motorola AirDefense WIPS Sensing on AP-7131
WIPS Sensor coverage RF Coverage
• One radio WIPS, one radio WLAN – simultaneous WIPS and WLAN support
Motorola AirDefense WIPS Sensing on AP-7131
Both radios provide Dual-Band Sensing
WIPS configuration is provided on a single new GUI page.
• Enable sensing with WIPS Server IP to initiate connection with WIPS server.
• WIPS Server 1 is primary, WIPS Server 2 is secondary appliance.
• Connection with primary is attempted first. If connection fails, connection with secondary is attempted.
Air Defense Application Configuration
How to: Configure Radios for WIPS Sensing or WLAN
Click on Wireless1
Select WIPS2
Select radio configuration as WLAN or WIPS
3
Enter the WIPS IP Server Address
4
Click Apply5
Branch Office(s)
Adaptive AP Mesh
AP-7131 AP-7131 AP-7131AP-7131 AP-7131AP-7131
RFS 7000 Cluster
Adaptive Mesh Deployment
NOC
Internet/Intranet
Application Server
Current Adaptive Deployment
Adaptive AP Mesh
• Radio configuration for base bridge and client bridge are supported on both 20 MHz and 20/40 MHz
• Client backhaul and Radio configurations for adaptive 11n Mesh architecture also supported
• Wi-NG 4.0 version on RFS6000 and RFS-7000 will support Adaptive WIPS sensor configuration and management on AP-7131 ver. 3.2
AP-7131 Mesh architecture is supported on the switch
43
How to: Configure adaptive mode settings on AP-7131
Click on System Config.1
Select Adaptive AP Setup2
Enable Auto Discovery3
Provide Switch IP Addresses4
Set Keep-Alive Period5
Click Apply6
44
Click on Network Configuration1
Click on Wireless2
Select Radio Configuration3
Enable appropriate Radio4
Enable Base BridgeFor Base Bridge AP
5
Enable Client BridgeFor Client Bridge AP
6
Select Mesh Network7
Click Apply8
How to: Configure Mesh on AP-7131
45
How to: Configure Mesh on RFS 6000 or 70000
Click on Networks1
Select Access Port Radios2
Note the Aps being adopted3
Click on AP Mesh4
Select Base BridgeFor Base Bridge AP
5
Click OK6
Repeat steps for B.B & C.B. AP Provide Mesh network name
7
Select Mesh Timeout8
Click OK9
DSL/CableModem
SME Network in a BoxDual radio 802.11n operation with 802.3af
Branch OfficeSystems ServerAP- 7131
WAN
PrinterLAN
Internet
ES
3000
WLAN 1Inventory App. 802.11b/gTerminals (TKIP Security)
WLAN 2Public Hotspot 802.11b/g Laptops (Open Security)
WLAN 4802.11n Multimedia Kiosk App. (AES Security)
802.3AF
802.11b/g/n (2.4GHz) 802.11a/n (5GHz)
WLAN 3Voice/ Video Conference 802.11n Laptops (WPA2)
Data Dat a
RTS
CTS
Dat
a
1. Hidden Node Problem
2. Data from two clients collides at AP
3. 11G client sends a short RTS packet
4. Receiver responds with CTS packet causing all neighboring clients to backoff
5. Sender sends its DATA to receiver
RTS/CTS is used to solve the Hidden Node Problem
What is RTS-CTS?
11G Client 11B Client
5 GHz
AP-7131
LegacyClient
11nClient
• HT Protection causes throughput degradation similar to 11b + 11g co-existence
ClientAssociates
CTS-to-Self
CTS-to-Self
RTS-CTS HT Protection
• Utilizes two adjacent channels (primary and secondary) for 20/40Mhz
• When in 20/40Mhz, AP can support legacy clients
• Similar to proprietary channel bonding techniques (Atheros turbo mode – 108Mbps)
• Snapshot of the beacon below displays the support for 20/40Mhz
Channel Width
Configure Channel Width
Click on Wireless1
Select Appropriate RadioUnder Radio Configuration
2
Select 20/40 MHz3
Click on Apply4
Cont Window
ACK
Station 1
Station 2
Data MPDU-1 ACK
SIFS/DIFS
Data MPDU-1
SIFS
Cont Window
DIFS
Cont Window
Block ACK
SIFS/DIFS
Station 1
Station 2
Data MPDU-1
Data MPDU-1
SIFS
SIFSAMPDU Header
Legacy Operation
AMPDU-Aggregation
AMPDU Aggregation
1. Every Data packet is transmitted at 300Mbps
Packet Date Rate is 300Mbps
Every Packet is Acknowledged
In a period of 1.8 msecs only 9 Data packets were transmitted
2. Every Data packet is Acknowledge
802.11n Wireless Trace in 20/40Mhz with AMPDU Aggregation Disable
9 Data Packets Tx in 1.8 msecs
AMPDU Aggregation Disabled
1. Every Data frame is transmitted at 300Mbps
Frame Date Rate is 300Mbps
Aggregated frames Block
Acknowledged
In a period of 1.8 msecs 38 Data packets were transmitted. Significant Improvement over non-Aggregated frames (9 Frames)
2. Aggregated Frames Block Acknowledged
38 Data Frames Tx in 1.8 msecs
AMPDU Aggregation Enabled
How to: Configure AMPDU
Click on Wireless1
Select Appropriate RadioUnder Radio Configuration
2
Select 20/40 MHz3
Click on Apply4
Click OK5
• Guard Interval is the used to avoid interference between two OFDM Signals
• Default Guard Interval in 802.11a and 802.11g is 800 nano secs
• 802.11n defines an optional Short Guard Interval of 400 nano secs boosting the performance a bit
Short Guard Interval
How to: Configure Short Guard
Click on Wireless1
Select Appropriate RadioUnder Radio Configuration
2
Select Set Rates3
Enable Support Short GuardInterval
4
Click OK4
Click on Apply4
• AMSDU aggregates multiple MSDU’s into a single MPDU
• The entire AMSDU is transmitted when an error occurs in contrast to AMPDU aggregation where only the error AMPDU is transmitted
• RIFS can be used in place of SIFS to separate multiple transmissions from a single transmitter when no SIFS-separated response transmission is expected as a means of reducing overhead
• The AP sets the RIFS Mode field of the HT IE to 1 if supported
AMSDU and RIFS
229 Mbps
• Channel Width: 20/40
• Security None
• Packet Size:1518
• Test Duration: 30secs
• Version: 3.0.2.0-25R
• Test Tool: Veriwave
229 Mbps
5 Ghz
5 Ghz 5 Ghz
124 Mbps
229 Mbps
5 Ghz 5 Ghz
124 Mbps
2.4 Ghz
119 Mbps
Mesh Performance
Veriwave is:
• An Integrated Packet Generator
• A Wired and Wireless Client Emulator
Test Topology (Veriwave)
Access Point 11n Client
MCS 0-7
MCS 8-15
SM Power SaveActive
40 MHz intolerantActive
Client: SM Power Save
• Client supports only one data Active Rx chain• AP transmits only one spatial stream
Client: 40 MHz Intolerant
• AP downgrades to 20 MHz mode of operation
20 MHz
11n Client Settings
5 GHz
2.4 GHz
AP-7131
LegacyClient
11nClient
• Dedicated 5GHz spectrum for 11n HT clients ONLY• Dedicated 2.4GHz spectrum for all legacy clients
Best Deployment Model
T: # of Transmit Antennas
R: # of Receive Antennas
N: # of Spatial Streams
Devices Tx Rx N
Motorola AP-7131 3 3 2
Cisco Aironet 1250 2 3 2
11n Client 1 (common) 2 2 2
11n Client 2 1 2 1
AP-7131 TxR:N
More resilient then competition