Transcript WRC-12 Agenda Item 1.19 Regulatory Considerations for Software Defined and Cognitive Radio Systems Brennan T.

WRC-12 Agenda Item 1.19
Regulatory Considerations for Software
Defined and Cognitive Radio Systems
Brennan T. Price, N4QX
ARRL Chief Technology Officer
TAPR/ARRL Digital Communications Conference
September 17, 2011
WRC-12
• January 23 – February 17, 2012
– (moved from September 2011)
• Held in Geneva, Switzerland
• Conference Preparatory Meeting held in Geneva
February 14-25, 2011
• Deals with 35 separate Agenda Items, considering
potential changes to the ITU Radio Regulations, a treatylevel instrument containing the international table of
allocations and rules governing the various radio
services.
• The ARRL CTO’s office is tasked with, among other
things, international advocacy. This primarily, but not
exclusively, involves advocacy before the ITU and
preparation for international meetings, such as WRC-12.
Agenda Item 1.19
• To consider regulatory measures and their relevance, in
order to enable the introduction of software-defined radio
and cognitive radio systems, based on the results of ITUR studies, in accordance with Resolution 956 (WRC-07).
SDR Definition
• Software-defined radio (SDR) is a radio
transmitter and/or receiver employing a
technology that allows the RF operating
parameters including, but not limited to,
frequency range, modulation type, or output
power to be set or altered by software, excluding
changes to operating parameters which occur
during the normal pre-installed and
predetermined operation of a radio according to
a system specification or standard.
CRS Definition
• Cognitive radio system (CRS) is a radio
system employing technology that allows the
system to obtain knowledge of its operational
and geographical environment, established
policies and its internal state; to dynamically and
autonomously adjust its operational parameters
and protocols according to its obtained
knowledge in order to achieve predefined
objectives; and to learn from the results
obtained.
SDR CPM Method
•
“Any radio station that has been reconfigured must continue to meet the
regulatory requirements in the Radio Regulations applicable to the radio
service in which the radio station belongs. Whether the reconfiguration is
made by hardware or software means does not negate that requirement.
Therefore it becomes clear that the existing Radio Regulations can
encompass the implementation of SDR without any modification to the
Radio Regulations.”
6/1.19/5.1.1
Method A
No change to the Radio Regulations.
Under this method, technical and operational considerations related to the SDR
technologies implemented in any stations of a radiocommunication service would be
addressed in ITU-R texts as appropriate.
Advantages
– Allows administrations to facilitate implementation of SDR.
Disadvantages
– None.
CRS CPM Methods
6/1.19/5.2.1.1
Option A: No change to the Radio Regulations
Under this method, technical and operational considerations related to the CRS technologies
implemented in any systems of a radiocommunication service could be developed in ITU-R
Recommendations and Reports as appropriate.
Advantages
– Allows administration to facilitate implementation of CRS.
Disadvantages
– Does not provide guidance for the studies and provisions for the implementation of CRS.
6/1.19/5.2.1.2
Option B: No change to the Radio Regulations and an ITU-R Resolution
providing guidance for further studies on CRS
Under this method an ITU-R Resolution is developed to provide a framework in order to facilitate
studies on technical and operational considerations related to the implementation of CRS
technologies to ensure coexistence and sharing among radiocommunication services are
addressed leading to ITU-R Recommendations and Reports as appropriate.
Advantages
– Allows administrations to facilitate implementation of CRS.
– Resolution provides a framework for guidance on further studies.
Disadvantages
– Does not provide provisions for the implementation of CRS.
Caveat
• The value of the CPM Report today is
{x | x > 0}.
• The value of the CPM Report on
January 23, 2012 is {x | x = 0}.
What else is going on with WRC-12
preparation?
• Defensively, we are working on HF and VHF
radar and monitoring other issues.
• Offensively, we are working on a secondary
allocation between 415-526.5 kHz. The United
States has taken an affirmative position on this
item despite significant opposition by maritime
interests.
• WRC-12 will determine the agenda for WRC-15.
It is a near certainty that a reallocation for mobile
broadband/IMT will be on the WRC-15 agenda.
Tnx es 73 de N4QX/3
Brennan T. Price, N4QX
Chief Technology Officer
American Radio Relay League
3545 Chain Bridge Road, Suite 209
Fairfax VA 22030-2708
Phone +1 703 934-2077