Digital Enhanced Cordless Telecommunications (DECT); Ultra Low Energy (ULE); Machine to Machine Communications; Part 1: Home Automation Network (phase 1) (V1.1.1)
"The present document specifies the first set of functionalities of the ETSI radio technology named DECT Ultra Low Energy (ULE). DECT ULE provides bi-directional radio communication with medium range@ data protection@ and Ultra Low Power consumption between different types of Portable Devices and Radio Fixed Parts. DECT ULE has been created by the ETSI Technical Committee DECT@ and is based on the DECT base standard EN 300 175@ parts 1 [1] to 8 [8]@ and the DECT Packet Radio Service (DPRS)@ EN 301 649 [i.5]. However DECT ULE includes substantial differences with its parent technology in order to achieve Ultra Low Power consumption. The present document is part 1 of a multipart deliverable intended to cover the Machine to Machine communications based on DECT Ultra Low Energy (ULE). The set of features defined in the present document is named ""Home Automation Network (HAN)@ phase 1""@ and is primarily targeted to provide a global M2M solution within domestic scenarios. However@ this does not prevent the use of the present document in other scenarios. Further phases of the Home Automation Network (HAN) or further Machine to Machine applications based on DECT ULE will be defined in the future by other parts of this multi-part deliverable or by separate Technical Specifications. From the point of view of DECT standardization@ the present document is an application profile (AP) based on the DECT base standard (EN 300 175@ parts 1 [1] to 8 [8]). This application profile (AP) may reuse definitions and procedures defined in other DECT applications profiles when needed or convenient. This is the case@ for instance@ of the DECT Generic Access Profile (GAP)@ EN 300 444 [9] and the DECT Packet Radio Service (DPRS)@ EN 301 649 [i.5]. DECT Ultra Low Energy (ULE) Part 1 (the present document) provides the following basic functionalities: ? MAC/PHY Layer - Unlocked@ ultra low duty cycle operation for battery powered Portable Part devices ? PP may enter in ""deep sleep"" state between activity cycles with near all circuits switched off (with loss of synchronization to the base) - Provisions for Fast Locking so the Portable Part device can remain in long sleep cycles and regain the timing information of the DECT network quickly - Dedicated ULE ""dummy"" C/L channel using the B-field of regular dummy bearer containing: ?Aids for fast re-synchronization ?General static broadcast information ? Channel selection information ? Dedicated ULE paging channels ? Provision for connectionless downlink channels (in further phases) - Ultra-fast ""expedited"" procedures optimized for ULE and allowing combined transmission of signalling and data packet in the very first frame - New paging channels specific for ULE over extended dummy bearer - Implementing a wide range of modes from fast to ultra-slow paging - Management algorithms for handling access collisions - Use of short slots if no U-data for further energy saving - ""Stay-alive"" handshake procedures - U-plane based on MAC protected service IPQR ?Error detection (CRC) and correction (ARQ) capabilities ? Automatic retransmission based on a Mod-2 schema with a maximum packet lifetime ? DLC Layer - New DLC service LU14 incorporating CCM authenticated encryption at DLC layer ? See also security description - DLC service LU10 with frames FU10a/d as transport of LU14 ? Provides sequence numbering and control@ flow control@ Tx/Rx window handling@ and segmentation and re-assembling@ of higher layer packets - New channel GFA for DLC control - C-plane DLC (LAPC) service ? Network (NWK) Layer - Connection Oriented model including CC (Call Control) and MM (Mobility Management) entities ? Virtual Circuits (=PDP Context) created at the beginning and kept for long time ? No NWK layer operations during regular packet handling - DECT CC message and operations support - DECT MM message and operations support ? Location update@ authentication@ etc. ? Some restrictions will be applicable in phase 1 by practical reasons - Additional IEs for negotiation of higher layer (application) protocol State of the art Security - NWK layer authentication algorithm DSAA2 based on AES with key length 128 bits (see EN 300 175-7 [7]): ? Provides both PT and FT mutual authentication and Cipher Key generation ? Split into two security processes in NWK side allowing geographic distribution in home/visited domains - New authenticated encryption based on CCM operating at DECT DLC layer: ? Based on RFC 3610 [i.7] and AES 128 [i.8] ? Provides simultaneously strong encryption and continuous mutual authentication without the need of running NWK layer transactions ? Mechanism ideal for the intended application The following three types of PP devices are part of DECT ULE phase 1. Additional device types may be added in further ULE phases: ? PP type I: ""sensor"" with or without paging support ? PP type II: ""fast actuator"" ? PP type III: ""slow actuator"" Examples of the applications that can be built with DECT ULE phase 1 (the present document) are the following: ? Actuator devices Devices with fast response times (Fixed Part to Portable Part and vice versa) commonly used@ for instance@ in Electricity Plugs or Motor Drivers such as a sunscreen. ? Slow Actuator devices Devices with relatively fast response times (Fixed Part to Portable Part and vice versa) commonly used@ for instance@ in Thermostats. ? Sensor devices Devices with long sleep times and fast response times from Portable Part to Fixed Part. Typical examples are Smoke Detectors and Motion Detectors. This list is not exhaustive and further applications may be developed by device vendors based on the present document. The maximum radio coverage range of DECT ULE will be as wide as standard DECT technology. Smaller coverage may be defined for specific applications due to power consumption and spectrum use considerations. Due to the nature of DECT ULE applications@ it is foreseen that most of them would operate@ however not necessarily@ over unlicensed spectrum. The standard DECT frequency allocation (1 880 - 1 900 MHz) will be used in EU area for operation of ULE phase 1 devices. Further bands@ licensed or unlicensed@ may be identified in the future. DECT ULE has been designed to be coexistent with other DECT applications (including GAP or NG-DECT). Different types of DECT devices may be used over the same spectrum@ and mixed devices supporting DECT ULE and other DECT applications may be built. It is foreseen that the majority of DECT ULE RFPs and some DECT ULE PPs will be mixed devices. All DECT devices claiming to be compliant with this Application Profile will offer at least the basic services defined as mandatory. In addition to that@ optional features can be implemented to offer additional DECT ULE services. The aim of the present document is to guarantee a sufficient level of interoperability and to provide an easy route for development of DECT ULE applications@ with the features of the present document being a common fall-back option available in all compliant to this profile equipment. The present document also guarantees compatibility between DECT ULE applications and existing DECT applications (such as GAP or NG-DECT) running over the same spectrum and even in the same device. DECT ULE does not standardize high layer (application) data protocols@ which may be defined by separate ETSI documents or may be in the scope of other standardization organizations."