ISED Canada extends frequencies for use by LE-LAN

Innovation, Science and Economic Development (ISED) Canada, RSS-247 Issue 3 introduces requirements for devices operating from 5850 to 5895 MHz (U-NII-4) and channels that span across 5850MHz, also specifying power limits and unwanted emission limits associated with license-exempt local area network (LE-LAN) devices within that band.

RE:

https://ised-isde.canada.ca/site/spectrum-management-telecommunications/en/learn-more/key-documents/published-documents

 

Wireless Spectrum changes, on the Road to Smarter Transportation

FCC Rule amendment for 5 GHz U-NII Band 4

FCC Proposes to permit unlicensed operation in the lower 45 MHz of the U-NNI Band 4 from 5.850 to 5.895 GHz under part 15 of cfr title 47.

This proposal would also permit Intelligent Transport Systems(ITS) operation in the upper 30 MHz of the band from 5.895 to 5.925 GHz under part 90 and 95 of cfr title 47.

ITS operation would consist of Cellular Vehicle to Everything (C-V2X) devices at 5.905 to 5.925 GHz and C-V2X and/or Dedicated Short Range Communications (DSRC) devices at 5.895 to 5.905 GHz

The FCC is also asking for comments/feedback on alternative spectrum band approaches and if it would better achieve the goal of maximizing the effective use of the spectrum in the 5.9 GHz band, including different sub-band sizes or greater flexibility for the introduction of additional vehicular safety communications technology. Comments due on or before March 9, 2020, reply comments due on or before April 6, 2020.

REF:

https://www.govinfo.gov/content/pkg/FR-2020-02-06/pdf/2020-02086.pdf

FCC U-NII Band 5 GHz devices

FCC’s OET published a transition plan for U-NII devices. 

U-NII rules, Title 47 Part 15 Subpart E, cover devices operating in the 5.15-5.35 GHz, 5.47-5.725 GHz and 5.725-5.85 GHz bands. 

All new applications will be assessed to the new rules. Devices certified under the old rules must meet the new rules on or after June 2, 2016. Devices already in use and installed are grandfathered.

New U-NII requirements postponed

The FCC has waived, until December 2, 2015, the implementation of the new U-NII requirements, Specifically 15.37(h).

This allows 5.8 GHz deices to continue using the DTS rules in 15.247 for approval and certification.

(h) Effective June 2, 2015* devices using digital modulation techniques in the 5725-5850 MHz bands will no longer be certified under the provisions of §15.247. The technical requirements for obtaining certification after this date for digitally modulated devices and the digitally modulated portion of hybrid devices are found in subpart E of this part. The provisions for the frequency hopping spread spectrum portion of hybrid devices will remain in §15.247. Effective June 2, 2016 systems using digital modulation techniques in the 5725-5850 MHz band certified under the provisions of §15.247 may no longer be imported or marketed within the United States.

By this order *June 2, 2015 in the above rule part is in essence replaced with December 2, 2015

REF:

https://www.fcc.gov/document/u-nii-devices-extension-order

Title 47, Part 15.37

4 Quick Tips on the Transition to Canada's new RSS-247 Radio Standard

Industry Canada published a new radio standard, RSS-247 (May 2015). For devices under the scope of this new standard, RSS-210 is no longer applicable for certification.

What devices fall within the scope of RSS-247? If you’re familiar with the FCC rules, then RSS-247 is comparable in scope to FCC Part 15.247. In general, devices operating at 902-928 MHz, 2400-2483.5 MHz or 5725-5850 MHz utilizing frequency hopping, digital modulation and/or a hybrid of both techniques. The new standard also covers licences exempt local area network devices operating in the U-NII bands, specifically, 5150-5250 MHz, 5250-5350 MHz, 5470-5725 MHz and 5725-5850 MHz.

Some things to know about the transition.

1. If you have received certification to RSS-210 before publication of RSS-247, nothing changes and the device would be covered by RSS-210
2. If your test report was issued to RSS-210 and you are submitting for certification before August 28th 2015, your certification body will certify to RSS-247. Canada has a three month transition window
3. After August 28, 2015, your test report must be to RSS-247
4. Canada will accept test reports up to one year old, so after the August deadline if submitting test results covered by RSS-210, it will need to be supplemented with a partial test report to cover any missing requirements in RSS-247

Ref:

http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf10971.html#s1

http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf10975.html

5 GHz band rules comment period extended

80211a-5-ghz-spectrum (Photo credit: sam_churchill)

FCC has extended the commenting period to July 24^th, 2013 on the Notice of Proposed Rulemaking (NPRM) - Revision of Part 15 of the Commission’s Rules to Permit Unlicensed National Information Infrastructure (U-NII) Devices in the 5 GHz Band.

The above rulemaking will have a significant impact on unlicensed device spectrum use and affect devices that operate in the 5 GHz band, devices that use wide band data transmission techniques such as the emerging  802.11ac wireless standard for example. The complexity of the technologies embedded in such systems to deal with the spectrum utilization requirements can have a direct impact on the cost of such devices.

For a briefing on some of the proposed changes in the NPRM, see http://www.emcrules.com/2013/02/fcc-opens-more-5ghz-spectrum.html

The request for extension was made by IEEE 802 Committee and the WiFi Alliance to enable more time for review and commenting on technical and policy issues.  The FCC noted that comment extensions are not a routine practice, but given the importance of this proceeding, they found it appropriate for the development of a full and complete record.

REF:

ORDER Extended Reply Comment Date: July 24, 2013

FCC Opens More 5GHz Spectrum

 

In an effort to accelerate the growth and expansion of new Wi-Fi technology, the FCC proposes to increase the available unlicensed spectrum by 35%, adding 195 MHz of additional spectrum in the 5 GHz band. This rule proposal today follows through with FCC chairman Julius Genachowski’s announcement at CES earlier this year (See Post).

The Unlicensed National Information Infrastructure band three (U-NII-3) will receive an addition 25MHz of spectrum and the rules for U-NII-3 (15.407) devices are proposed to align with those of digitally modulated devices (15.247). This will provide consistent rules across 125 MHz of spectrum. The rules propose to remove the 5.725 – 5.85 GHz band from section 15.247, and amend the U-NII band rules to maintain many of the technical rules that currently make certifying to 15.247 more attractive; however some of the more restrictive requirements of 15.407 will remain.

Summary of some of the proposed 15.247/15.407 technical changes;

• 15.247 will remove 5.725 - 5.850 GHz (devices using this band now under 15.407)
• Frequency band, 15.407 expanded from 5.825 to 5.85 GHz
• Power, 15.407 will fix limit at 1W as in 15.247 instead of lesser of 1W or 17 dBm + 10 log B
• PSD, 15.407 to use Power Spectral Density of 15.247 (possible change of measurement BW to 1 MHz)
• Emission Bandwidth, 15.407 will adopt min 6 dB bandwidth of 15.247
• Antenna Gain, 15.407 to retain 23 dBi maximum no penalty antenna gain  for point to point
• Unwanted Emissions limits of 15.407 will remain, more stringent than 15.247
• Peak to Average ratio of 13dB in 15.407 will remain, no such requirement in 15.247

The new rules are seeking comment on potential security features that will be required by manufacturers and implemented in any digitally modulated device capable of operating in the U-NII bands to prevent 3^rd parties from reprogramming devices to operate outside of the device’s certified parameters.

The proposal also notes potential “mitigation” techniques such as a database registration process combined with geo-location technology to determine whether there is a potential for interference to radar systems such as the TDWR.

There are several changes proposed to improve the reliability of “Dynamic Frequency Selection” DFS, namely lowering permitted Power Spectral Density (PSD) for lower powered devices using relaxed sensing threshold, modifying the Bin-1 radar waveform and removing the uniform channel loading requirement. The rules make clear that any device subject to DFS and that is capable of initiating a network, must have radar detection functionality and must be approved with that capability.

It is suggested that devices could operate in the new U-NII-2B band under the same technical framework specified in 15.407 for U-NII-2A and U-NII-2C opening operation up to the 475 MHz continuous band from 5.25 to 5.725 GHz. It is also noted that should the U-NII-3 band be increased to the proposed 5.85 GHz upper limit, then the same technical framework applicable to U-NII-3 could be applied to devices operating in the U-NII-4 band allowing operation across the continuous 200 MHz spectrum. The proposal seeks whether and how to integrate DFS into the new U-NII-2B and U-NII-4 bands.

It is noted that up to 12 months after adoption of any new or modified rules, devices could still be certified under the old rules. After 12 months, all new certifications for U-NII devices must be under the new rules. Up to 2 years after adoption of any new or modified rules, the FCC will permit Class II permissive changes to equipment certified prior to the 12 month transition date. At the end of the 2 year transition period, devices will not be permitted to be sold, manufactured, installed, imported or marketed in the United States unless they are certified under the new rules. It is explained that devices that are already installed or in use should be grandfathered for the life of the equipment.

The Notice of Proposed Rulemaking is set with a 45 day comment period, and a 75 day reply comment period. The changes proposed are far too numerous for this post to cover in toto, for the technical details, a link is provided in the reference section.

REF:

http://transition.fcc.gov/Daily_Releases/Daily_Business/2013/db0220/FCC-13-22A1.pdf