Page 20 - DECT Today - Issue 3 - May 2015

Figure 1: A global home control and domestic scenario (from ETSI TS 102 939-1).
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ULE ALLIANCE AND MEMBERS BUILD INTERNATIONAL PRESENCE AT CES 2015
Update:
DECT Ultra Low Energy
(ULE) for the M2M world
By Guenter Kleindl, chairman of ETSI DECT Technical Committee
DECT Ultra Low Energy (ULE) – which is based on the proven and established ETSI DECT standard – is a very promising technology for the wireless machine-to- machine (M2M) market. As with those DECT systems deployed worldwide in hundreds of millions of units, ULE retains all the advantages of DECT technology over competing M2M technologies: interference-free, licence-free exclusive frequency band, high security thanks to the recent introduction of more powerful algorithms, secure authentication and long range (up to 500m).
New features of DECT ULE include low energy consumption with standby current in the range of microAmps, low latency, which potentially opens the market to applications requiring a fast response, as well as good quality of service, a unique feature compared to other low power wireless standards.
ULE standardisation: where we are
ETSI has been working with the DECT Forum and the ULE Alliance to make ULE a success.
The ETSI Committee TC DECT published the first Technical Specification on ULE (ULE Phase 1 - TS 102 939-1 V1.1.1) in 2013. ULE Phase 1- compliant devices include sensors (such as smoke/motion detectors), fast actuator devices (with a fast response time) as well as slow actuator devices (with a relatively fast response time). The ULE Phase 1 specification has been recently updated to take into account feedback from implementation and the new version (ETSI TS 102 939-1 V1.2.1) has just been finalised. ETSI TC DECT has also produced the overall test framework for ULE Phase 1 conformance testing (ETSI TS 103 159-1).
ULE phase 1 devices can provide a complete M2M solution for a domestic scenario, as shown in Figure 1, thanks to the integration with traditional DECT devices.
Phase 2 specification (ETSI TS 102 939-2 V1.1.1) which further extends the features of these new innovative smart devices with support for hybrid devices – those devices supporting both ULE and non-ULE services – as well as Software Update Over The Air (SUOTA). ULE phase 2 adds audio transmission to ULE devices. This allows the design of devices with integrated speaker and/or
microphone and the capability to establish an audio communication (in addition to ULE data transport). The audio communication may be established to:
• Regular DECT handsets in the same DECT Network
• External terminals connected via PSTN, ISDN or Internet
• Other M2M devices with audio capability
Specific mechanisms have been included to allow the simultaneous transport of ULE data when an audio communication is active. Audio communication capability includes the support of complete telephony and VoIP signaling, allowing the establishing of communications to external terminals interconnected via PSTN, ISDN or Internet. Intercoms and medical pendant systems are only two examples of applications covered by ULE Phase-2 compliant devices.
ULE standardisation: the future
ETSI TC DECT intends to further expand the potential of ULE technology with the introduction of ULE repeaters.
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