The World Wide Web Consortium (W3C) has introduced a new standard, Efficient XML Interchange, which improves the performance and power consumption of apps that use XML on devices.
The World Wide Web Consortium (W3C)
published a new standard that will enable users to employ XML in new ways, such
as in smartphones, embedded systems and a range of devices.
The new specification, known as the Efficient XML Interchange
standard, improves the performance, network efficiency and power
consumption of applications that use XML. EXI is a very compact representation
of XML information, making it ideal for use in smartphones, in devices with
memory or bandwidth constraints, in performance-sensitive applications such as
sensor networks, in consumer electronics such as cameras, in automobiles, in real-time
trading systems and in many other scenarios.
"While XML has widely been used for data exchange among Web services
and devices, the use of XML on resource-constrained devices has always been an
issue due to its processing overhead," said Shigeki Shibayama, deputy
group executive of Digital Platform Technology Development at Canon. "Canon
is very pleased by the release of W3C EXI Format 1.0 Recommendation as a standard
interoperable compact form of XML. We expect EXI will enable us to provide
compelling Web services on consumer devices like printers and digital cameras."
The W3C said extensive testing shows that EXI performs consistently better
than previous XML formats
compression and even packed binary data formats
. As such, it brings the
full range of XML benefits to even the most demanding applications.
"We've been providing EXI products for seven years and are amazed
with what our customers have accomplished," said John Schneider, CTO
of AgileDelta and editor of the EXI specification, in a statement. "They've
achieved over 100-fold performance improvements and expanded their data
networks to high speed aircraft, automobiles, mobile devices and sensor
networks. At the same time, they've achieved dramatic cost savings by using
open Web standards and off-the-shelf products in place of the custom protocols,
gateways and applications previously required by these applications."
Schneider said AgileDelta is "extremely pleased" with the W3C EXI
Recommendation. He said EXI will accelerate and expand the reach of the Web, Web
services and XML technologies to an unprecedented new range of applications and
devices. "Our Efficient XML 4.0 product line includes very
high-performance, reliable, secure EXI processors; rapid EXI integration
solutions and advanced EXI features for Web services, mobile devices, embedded
systems and applications running Java, Java ME, .NET,
.NET CF [Compact Framework] and C/C++."
EXI also reduces fragmentation, as the W3C brought together diverse stakeholders
and reviewed a broad set of use cases. The result is the EXI standard-a single,
interoperable XML format that performs well consistently, across the full range
of use cases.
W3C officials said EXI is already being adopted in Smart Energy Standards to
support rapid communication between networks of smart meters, smart appliances
and electric vehicles. EXI also accelerates financial trading systems that
depend on transaction speed. EXI speeds up defense applications, where rapid
information flow can help save lives. In addition, EXI can make XML a more
valuable data format for Web applications on mobile devices, where reduced
utilization of the network and processor improves performance and extends
faster user experience.
Jorg Heuer, a program manager at Siemens, said Siemens is supporting EXI and
has launched its own open EXIficient implementation in addition to contributing
to the standardization process. "We believe that the Efficient XML
Interchange format will open the scope of XML to restricted domains such as
embedded networks of micro controllers and brings the key attributes of XML
such as openness, flexibility and continuity to the embedded domain,"
Heuer said. "By means of EXI, embedded controller networks will become a
new citizen of the Web."
EXI also will have a place in academic research. Natasha Noy, a senior
research scientist at Stanford University,
said EXI will be important in big physics projects for two main reasons. "First,
increasingly the scientific data that large instruments deal in is structured,"
she said. "Second, we are beginning to integrate scientific services like
mathematical modeling, instrument configuration control, historical archive
data and various control optimization systems like global feedback into the
basic controls platforms. That means the high-level structured data must also
be communicated very quickly. This specification facilitates such exchange."
The W3C said the following organizations provided leadership, guidance,
expertise and support for these efforts: Adobe, AgileDelta, BEA, Boeing, Canon,
Chevron, DataPower, Expway, France
Telecom, Fujitsu, High Performance Technologies, IBM,
Intel, KDDI, MITRE, Objective Systems, Oracle, OSS Nokalva, Nokia, Siemens, Stanford
University, Tarari, University
of Helsinki and the Web3D