Main Menu
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
SonicWall
  • Products
    • Network Security
      • Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
      • Security ServicesComprehensive security for your network security solution
      • Network Security ManagerModern Security Management for today’s security landscape
    • Advanced Threat Protection
      • Capture ATPMulti-engine advanced threat detection
      • Capture Security applianceAdvanced Threat Protection for modern threat landscape
    • Access Security
      • Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
      • Secure Mobile AccessRemote, best-in-class, secure access
      • Wireless Access PointsEasy to manage, fast and secure Wi-FI
      • SwitchesHigh-speed network switching for business connectivity
    • Email Security
      • Email SecurityProtect against today’s advanced email threats
    • Cloud Security
      • Cloud App SecurityVisibility and security for Cloud Apps
      • Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
    • Endpoint Security
      • Capture ClientStop advanced threats and rollback the damage caused by malware
      • Content Filtering ClientControl access to unwanted and unsecure web content
    • Product Widgets
      • Product Menu Right Image
      • Capture Cloud Platform
        Capture Cloud Platform

        A security ecosystem to harness the power of the cloud

    • Button Widgets
      • Products A-Z
        all products A–Z FREE TRIALS
  • Solutions
    • Industries
      • Distributed Enterprises
      • Retail & Hospitality
      • K-12 Education
      • Higher Education
      • State & Local
      • Federal
      • Healthcare
      • Financial Services
      • Carriers
    • Use Cases
      • Secure SD-Branch
      • Network Segmentation
      • Zero Trust Security
      • Secure SD-WAN
      • Office 365 Security
      • SaaS Security
      • Secure WiFi
    • Solutions Widgets
      • Solutions Content Widgets
        Federal

        Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions

      • Solutions Image Widgets
  • Partners
    • SonicWall Partners
      • Partners Overview
      • Find a Partner
      • Authorized Distributors
      • Technology Partners
    • Partner Resources
      • Become a Partner
      • SonicWall University
      • Training & Certification
    • Partner Widgets
      • Custom HTML : Partners Content WIdgets
        Partner Portal

        Access to deal registration, MDF, sales and marketing tools, training and more

      • Partners Image Widgets
  • Support
    • Support
      • Support Portal
      • Knowledge Base
      • Technical Documentation
      • Community
      • Video Tutorials
      • Product Life Cycle Tables
      • Partner Enabled Services
      • Contact Support
    • Resources
      • Resource Center
      • Free Trials
      • Blog
      • SonicWall University
      • MySonicWall
    • Capture Labs
      • Capture Labs
      • Security Center
      • Security News
      • PSIRT
      • Application Catalog
    • Support Widget
      • Custom HTML : Support Content WIdgets
        Support Portal

        Find answers to your questions by searching across our knowledge base, community, technical documentation and video tutorials

      • Support Image Widgets
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
  • Contact Sales
  • English English English en
  • BLOG
  • CONTACT SALES
  • FREE TRIALS
  • English English English en
SonicWall
  • Products
    • Network Security
      • Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
      • Security ServicesComprehensive security for your network security solution
      • Network Security ManagerModern Security Management for today’s security landscape
    • Advanced Threat Protection
      • Capture ATPMulti-engine advanced threat detection
      • Capture Security applianceAdvanced Threat Protection for modern threat landscape
    • Access Security
      • Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
      • Secure Mobile AccessRemote, best-in-class, secure access
      • Wireless Access PointsEasy to manage, fast and secure Wi-FI
      • SwitchesHigh-speed network switching for business connectivity
    • Email Security
      • Email SecurityProtect against today’s advanced email threats
    • Cloud Security
      • Cloud App SecurityVisibility and security for Cloud Apps
      • Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
    • Endpoint Security
      • Capture ClientStop advanced threats and rollback the damage caused by malware
      • Content Filtering ClientControl access to unwanted and unsecure web content
    • Product Widgets
      • Product Menu Right Image
      • Capture Cloud Platform
        Capture Cloud Platform

        A security ecosystem to harness the power of the cloud

    • Button Widgets
      • Products A-Z
        all products A–Z FREE TRIALS
  • Solutions
    • Industries
      • Distributed Enterprises
      • Retail & Hospitality
      • K-12 Education
      • Higher Education
      • State & Local
      • Federal
      • Healthcare
      • Financial Services
      • Carriers
    • Use Cases
      • Secure SD-Branch
      • Network Segmentation
      • Zero Trust Security
      • Secure SD-WAN
      • Office 365 Security
      • SaaS Security
      • Secure WiFi
    • Solutions Widgets
      • Solutions Content Widgets
        Federal

        Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions

      • Solutions Image Widgets
  • Partners
    • SonicWall Partners
      • Partners Overview
      • Find a Partner
      • Authorized Distributors
      • Technology Partners
    • Partner Resources
      • Become a Partner
      • SonicWall University
      • Training & Certification
    • Partner Widgets
      • Custom HTML : Partners Content WIdgets
        Partner Portal

        Access to deal registration, MDF, sales and marketing tools, training and more

      • Partners Image Widgets
  • Support
    • Support
      • Support Portal
      • Knowledge Base
      • Technical Documentation
      • Community
      • Video Tutorials
      • Product Life Cycle Tables
      • Partner Enabled Services
      • Contact Support
    • Resources
      • Resource Center
      • Free Trials
      • Blog
      • SonicWall University
      • MySonicWall
    • Capture Labs
      • Capture Labs
      • Security Center
      • Security News
      • PSIRT
      • Application Catalog
    • Support Widget
      • Custom HTML : Support Content WIdgets
        Support Portal

        Find answers to your questions by searching across our knowledge base, community, technical documentation and video tutorials

      • Support Image Widgets
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
  • Contact Sales
  • Menu

RF Basic Background: 2.4G and 5G Band

03/26/2020 34 People found this article helpful 120,951 Views

    Download
    Print
    Share
    • LinkedIn
    • Twitter
    • Facebook
    • Email
    • Copy URL The link has been copied to clipboard

    Description

    RF Basic Background: 2.4G and 5G Band

    Resolution

    There are currently five widely adopted standards for 802.11 wireless network. There are 802.11a, 802.11b, 802.11 g, 802.11n, and 802.11ac. 802.11ac is the newest and highest capacity standards, while older client devices may not be able to utilize the newer standards. Following table lists the main characters for these five wireless standards. 

    802.11(X)802.11a802.11b802.11g802.11n802.11ac
    Standard Approved19991999200320092013
    Frequency Band5 GHz2.4 GHz2.4 GHz2.4/5 GHz5 GHz
    Channel Width20 MHz20 MHz20 MHz20/40 MHz20/40/80/160 MHz
    (160M is optional)
    Non-Overlapping Channels24333/2424
    MIMO/SISOSISOSISOSISO4x4 MIMO8x8 MIMO
    Data Rate54Mbps11Mbps54Mbps600Mbps
    (3x3, 40MHz)
    1.3Gbps
    (3x3, 80MHz)
    Compatibility802.11a802.11b802.11b/g802.11a/b/g/n802.11a/b/g/n/ac
    • 2.4G Band Channels
    • 5G Band Channels
    • 2.4G vs 5G (Pro's and Con's)
      • ?RF interference??
      • Radio frequency barriers


    2.4GHz Band Channels

    In 802.11b/g/n 2.4Ghz radio band, there are 11 22MHz wide separate channels but only three channels (1, 6, and 11) are  non-overlapping . APs and STAs operating in one of these three channels don't interfere with APs and STAs running in the other two channels.

     

    #ChannelFrequency (GHz)LocationComments
    112.412North America
    North America: C#1-#11
    Europe: C#1-#13
    Japan: C#1-#14
               (802.11bg: #14 only)
    222.417North America
    332.422North America
    442.427North America
    552.432North America
    662.437North America
    772.442North America
    882.447North America
    992.452North America
    10102.457North America
    11112.462North America
    2.4G Band Channel List
    Five possible combinations of non-overlapping channels for 2.4G band. The red color set  in the below picture is recommended. Therefore, to deploy more APs, you are required to try hard to utilize channel 1, 6, and 11. Howerver, for 802.11n 2.4G? when using 40MHz channel width, only one AP can be deployed. Hence, 40 MHz operation in the 2.4 GHz band should be avoided.
    Image
    2.4G  Channel map


    5GHz Band Channels


    In 802.11a/n/ac 5Ghz radio band, there are 24 20MHz wide separate channels and 23 channels are non-overlapping in North America. APs and STAs operating in one of these channels don't interfere with APs and STAs running in the other channels.  However, due to possible interference with radar systems, only the  top four (Indoor Only) and buttom five (North America) channels are commonly used. For the rest 15 channels, the Dynamic Frequency Selection (DFS) is must applied.
     

    DFS monitors the region frequency of the radar signals. If radar signal is detect on the channel which AP is using, DFS will block the transmission on the channel and randomly switch to another channel to avoid the interference with the region radar system.
      
    #ChannelFrequency (GHz)LocationComments
    1365.180Indoor Only
    North America:C#1-#24
    Europe: C#1-19
    Japan: C#1-#19 
    2405.200Indoor Only
    3445.220Indoor Only
    4485.240Indoor Only
    5525.260DFS Required
    6565.280DFS Required
    7605.300DFS Required
    8645.320DFS Required
    91005.500DFS Required
    101045.520DFS Required
    111085.540DFS Required
    121125.560DFS Required
    131165.580DFS Required
    141205.600DFS Required
    151245.620DFS Required
    161285.640DFS Required
    171325.660DFS Required
    181365.680DFS Required
    191405.700DFS Required
    201495.745North America
    211535.765North America
    221575.785North America
    231615.805North America
    241655.825North America
    5G Band Channel List
    Image
    5G  Channel map
    In 5 GHz band, higher data rates (wider channel width) means fewer available channels. With 802.11a, there are a total of 24 non-overlapping channels available, but with 802.11ac, achieving the maximum data rate will reduce the number of non-overlapping channels to two for 80MHz and only one for 160 MHz wide (including DFS).
     
     Including DFSExcluding DFS
    Channel SizeNorth AmericaEuropeNorth AmericaEurope
    40MHz8 

    Related Articles

    • DNS Proxy: Creating DNS entries for internal/private network
    • Global VPN Client Connectivity Error
    • Unable to access certain websites, either slow or completely failing.

    Categories

    • Firewalls > TZ Series
    • Firewalls > SonicWall SuperMassive E10000 Series
    • Firewalls > SonicWall SuperMassive 9000 Series
    • Firewalls > SonicWall NSA Series

    Not Finding Your Answers?

    ASK THE COMMUNITY

    Was This Article Helpful?

    YESNO

    Article Helpful Form

    Article Not Helpful Form

    Company
    • Careers
    • News
    • Leadership
    • Awards
    • Press Kit
    • Contact Us
    Popular resources
    • Communities
    • Blog
    • SonicWall Capture Labs

    Stay In Touch

    • By submitting this form, you agree to our Terms of Use and acknowledge our Privacy Statement. You can unsubscribe at any time from the Preference Center.
    • This field is for validation purposes and should be left unchanged.
    • Facebook
    • Twitter
    • Linkedin
    • Youtube
    • Instagram

    © 2022 SonicWall. All Rights Reserved.

    • Legal
    • Privacy
    • English
      Scroll to top
      Trace:0981bd95f32945e4467f8723afb65d56-68