04-06-2012, 12:21 PM
Spectrum Pooling for Next Generation Public Safety Radio Systems
[attachment=24112]
INTRODUCTION
Dynamic Spectrum Access (DSA) technologies, including
Cognitive Radio (CR) technologies, are in development for the
next generation of commercial, military, industrial and public
safety networks. These technologies hold the promise of more
flexible and adaptive radio architectures, capable of sharing
the RF spectrum much more intensively than is feasible with
today’s currently deployed technologies, regulatory
frameworks, and business models. Such increased sharing is
critical for the continued growth of wireless services in order
to help alleviate growing spectrum scarcity. The
commercialization of DSA technologies represents an
important next step in the evolution of the wireless services
ecosystem. The need for and the opportunities offered by DSA
are especially relevant to the public safety community, which
provides an important test case for the commercialization of
DSA techniques.
CHANGING ENVIRONMENT FOR PUBLIC SAFETY RADIOS
As we explain, the future of radio systems of all types –- but
especially those for public safety -- will require much greater
reliance on Dynamic Spectrum Access (DSA) and related
technologies. This is clear from examining trends in
technology and research priorities, market growth, and the
changing mission requirements for public safety professionals.
DSA is necessary to enable new capabilities in the face of
growing demand for spectrum access from all sources.
Vision of the Radio Future
While the precise shape of the radio future may be difficult to
discern, certain key aspects appear certain. The radio future
will include lots more wireless of all kinds, greater demand for
mobility and portability and more heterogeneous wireless
networks. These future developments will have concrete
implications for radio network design, including the need for
more broadband capacity, enabling more dynamic and flexible
services and spectrum sharing.
Broadband needed
While many of the future wireless services – including
traditional voice and low-bit-rate data services do not require
high-bandwidth channels – many of the newer services will.
This will include bandwidth hungry applications such as highresolution
video streaming or video conferencing. Even
narrower-band services such as voice-over-IP (VoIP) or other
overlay services may need access to a broadband channel.
This represents a new challenge for mobile networks and for
the current spectrum management regime.
DSA, Cognitive Radio technologies help make wireless future feasible
At the same time that user requirements for wireless services
are increasing and the policy environment is becoming more
favorable to spectrum sharing, the capabilities of wireless
technology have expanded significantly. Advances in antenna
design, signal processing, software/cognitive radio, and new
networking technologies (e.g., mesh and ad hoc networking)
are making it increasingly feasible to support the diverse array
of wireless services and usage scenarios suggested by the
future described above.
[attachment=24112]
INTRODUCTION
Dynamic Spectrum Access (DSA) technologies, including
Cognitive Radio (CR) technologies, are in development for the
next generation of commercial, military, industrial and public
safety networks. These technologies hold the promise of more
flexible and adaptive radio architectures, capable of sharing
the RF spectrum much more intensively than is feasible with
today’s currently deployed technologies, regulatory
frameworks, and business models. Such increased sharing is
critical for the continued growth of wireless services in order
to help alleviate growing spectrum scarcity. The
commercialization of DSA technologies represents an
important next step in the evolution of the wireless services
ecosystem. The need for and the opportunities offered by DSA
are especially relevant to the public safety community, which
provides an important test case for the commercialization of
DSA techniques.
CHANGING ENVIRONMENT FOR PUBLIC SAFETY RADIOS
As we explain, the future of radio systems of all types –- but
especially those for public safety -- will require much greater
reliance on Dynamic Spectrum Access (DSA) and related
technologies. This is clear from examining trends in
technology and research priorities, market growth, and the
changing mission requirements for public safety professionals.
DSA is necessary to enable new capabilities in the face of
growing demand for spectrum access from all sources.
Vision of the Radio Future
While the precise shape of the radio future may be difficult to
discern, certain key aspects appear certain. The radio future
will include lots more wireless of all kinds, greater demand for
mobility and portability and more heterogeneous wireless
networks. These future developments will have concrete
implications for radio network design, including the need for
more broadband capacity, enabling more dynamic and flexible
services and spectrum sharing.
Broadband needed
While many of the future wireless services – including
traditional voice and low-bit-rate data services do not require
high-bandwidth channels – many of the newer services will.
This will include bandwidth hungry applications such as highresolution
video streaming or video conferencing. Even
narrower-band services such as voice-over-IP (VoIP) or other
overlay services may need access to a broadband channel.
This represents a new challenge for mobile networks and for
the current spectrum management regime.
DSA, Cognitive Radio technologies help make wireless future feasible
At the same time that user requirements for wireless services
are increasing and the policy environment is becoming more
favorable to spectrum sharing, the capabilities of wireless
technology have expanded significantly. Advances in antenna
design, signal processing, software/cognitive radio, and new
networking technologies (e.g., mesh and ad hoc networking)
are making it increasingly feasible to support the diverse array
of wireless services and usage scenarios suggested by the
future described above.