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802.22 is submitting a PAR and 5C for consideration at the San Antonio Plenary Session in November. The PAR proposes an advanced beaconing amendment to the IEEE Std. 802.22.1-2010 for spectrum sharing with radars, fixed or mobile space to earth stations, RF
sensors, mobile, nomadic, transportable systems and other services. The PAR results from the Advanced Beaconing Study Group that was authorized by the EC during the July Plenary Meeting.
Draft scope is:
5.2.b. Scope of the project:
This amendment specifies alternate Physical Layer (PHY) and enhancements to the Medium Access Control Layer (MAC) to the IEEE Std. 802.22.1-2010 for operation in Very High Frequency
(VHF), Ultra High Frequency (UHF) and the S-Band (for example, 54MHz to 862 MHz and 2 GHz - 4 GHz) to support advanced beaconing standard for the protection and spectrum sharing of Part 74 and other types of devices, such as radars, fixed or mobile space to
earth stations, RF sensors, mobile, nomadic, transportable systems and other services. This amendment provides an interface between the beaconing receiver and existing communications equipment in these bands to enable efficient spectrum sharing. The amendment
makes modifications to the Functional Overview, PHY, and MAC clauses of the standard. It also adds a new clause on Network Control and Management to allow information exchange between the beacons to enable features such as Built in test (BIT), mesh, self organizing
network capability and spectrum management techniques to guide the communications equipment as well as the beacons to use empty frequency bands, time-slots etc. to allow communications in-spite of a high power primary user services such as radar operation
in the vicinity. This amendment will enhance the security features contained in IEEE Std. 802.22.1-2010 in order to allow secure transfer of primary user parameters to the communications equipment. This amendment supports mechanisms to enable coexistence with
other 802 systems in the same band.
5.5 Need for the Project: In June 2010, the President signed a Memorandum calling for the National Telecommunications and Information Administration (NTIA), in collaboration
with the Federal Communications Commission (FCC), to make 500 megahertz of spectrum available for fixed and mobile wireless broadband. One of the portions of the spectrum identified to achieve this goal is the S-Band (2700-3700 MHz) where radars have been
deployed. The current plan is to use exclusion zones to protect U.S. Navy coastal operations and other Department of Defense test and training areas. However, advanced beaconing approaches, such as the one developed in the IEEE Standard 802.22.1-2011 for spectrum
sharing and interference protection between the primary signals and commercial wireless microphone signals may be used especially for the 3550-3650 band. Such an advanced beacon, will make 100 MHz of spectrum available nation-wide, and especially in the coastal
areas where significant US population resides. The designed beacon will contain peace time temporal patterns of the radars (e. g. PW, PRI), which when combined with some universal time clock such as GPS can help commercial communications systems to use the
empty time slots for their operation. During emergency scenarios, the beacon will be able to send urgent messages, to ask all the commercial systems to shut down immediately. Security features for such beacons are very important. IEEE
Std, 802.22.1-2010 has incorporated many such security mechanisms that may be applied for the protection relatively readily. However, the IEEE Std. 802.22.1-2010 beacon requires alternate technologies for the PHY and enhancements to the MAC in order to carry
the information for spectrum sharing. It also requires additional security attributes, as well as network self organization and spectrum management attributes to fulfil its duties. This advanced beaconing technology may be used to protect other types of services
such as the satellite earth stations, sensors, search and rescue etc. Hence the need for this amendment.
Complete documents can be found at:
Working Group voted to approve the PAR and 5C by 10-0-0 during the September Interim meeting.
Apurva N. Mody, Ph. D.
Chair, IEEE 802.22 Standard Working Group
130 Daniel Webster Highway, Mail Stop 2350
Merrimack, NH 03054
Work: (603)885 2621, Mobile: (603)-809-0459