IEEE 802.11ad
IEEE 802.11ad (also Wireless Gigabit or Multiple Gigabit Wireless Systems , MGWS ) is a standard for wireless networks. In contrast to classic WLAN , the range of the millimeter waves is only a few meters and is limited to the same space. Due to the high bandwidth , a large data rate of a few gigabits per second is achieved. B. an uncompressed video can be transmitted. Such videos currently have a 4K resolution (Ultra-HD: 3840 × 2160 pixels), but the trend is towards higher frame rates, e.g. B. 48 frames per second.
The 60 GHz band extends from 57 to 66 GHz and is divided into four channels with a bandwidth of 1760 MHz via a channel grid of 2160 MHz .
| channel | Center frequency |
|---|---|
| 1 | 58.32 GHz |
| 2 | 60.48 GHz |
| 3 | 62.64 GHz |
| 4th | 64.8 GHz |
The frequency plans in some cases significantly restrict use, but allow license-free use. Depending on the region, some channels may not be used.
| region | lower frequency | upper frequency | usable channels |
|---|---|---|---|
| United States | 57.00 GHz | 71.00 GHz | 1, 2, 3, 4 |
| Canada | 57.00 GHz | 64.00 GHz | 1, 2, 3 |
| South Korea | 57.00 GHz | 64.00 GHz | 1, 2, 3 |
| EU | 57.00 GHz | 66.00 GHz | 1, 2, 3, 4 |
| Japan | 57.00 GHz | 66.00 GHz | 1, 2, 3, 4 |
| Australia | 59.40 GHz | 62.90 GHz | 2 |
| China | 59.00 GHz | 64.00 GHz | 2, 3 |
See also
- Section 802.11ad in the Wireless Local Area Network article
- Section 802.11ad in article IEEE 802.11
Web links
- 802.11ad-2012 - IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 3 : Enhancements for Very High Throughput in the 60 GHz Band. (PDF) IEEE.org, May 30, 2013, accessed on May 8, 2014 (English, chargeable).
Individual evidence
- ↑ Ernst Ahlers: Technical tricks with Gigabit WLAN. Heise, June 27, 2013, accessed May 8, 2014 .
- ↑ 802.11ad - WLAN at 60 GHz A Technology Introduction. (PDF) White Paper from Rohde & Schwarz , November 21, 2013, accessed on December 9, 2014 .
- ↑ Wireless LAN at 60 GHz - IEEE 802.11ad Explained. (PDF) (No longer available online.) Application note from Agilent , May 30, 2013, archived from the original on August 23, 2014 ; accessed on May 8, 2014 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ FCC: CFR47, Part 15, §15.255, Operation within the band 57-71 GHz. ( ecfr.gov [accessed May 19, 2019]).
- ↑ MARTIN PROULX: RSS-210: License-Exempt Radio Apparatus: Category I Equipment, Annex J, Devices Operating in the Band 57-64 GHz . Issue 9, August 2016 ( gc.ca [PDF]).
