Wibree is the first wireless technology to solve the following needs in a single solution. Ultra low peak average and idle mode power consumption Ultra low cost and small size for accessories and human interface device (HID) Minimal cost and size addition to mobile phones and PCs. Global, intuitive and secure multivendor interoperability. Bluetooth low energy is designed with two equally important implementation alternatives: single-mode and dual-mode. Small devices like tokens, watches and sports sensors based on a single-mode Bluetooth low energy implementation will enjoy the low-power consumption advantages enabled for highly integrated and compact devices. In dual-mode implementations Bluetooth low energy functionality is integrated into Classic Bluetooth circuitry. The architecture will share Classic Bluetooth technology radio and antenna, enhancing currently chips with the new low energy stack—enhancing the development of Classic Bluetooth devices with new capabilities. 3.4.0 Data Rate Wibree technology is optimized to offer ultra low peak, average, and idle mode power consumption. Transfer rate is not the key criterion in those use cases where ultra-low power consumption is needed and data-intensive applications with data rates higher than 1 Mb/s would sacrifice the long battery life. 3.5 Standardization In the market of proprietary connectivity solutions, Bluetooth low energy technology differentiates itself through its: widely adopted industry standard for protocols (Bluetooth SIG) internationally adopted industry standard for transmission (IEEE 802.15.1) Low price through single chip integration Compatibility with yet deployed Bluetooth devices via updates 3.6 Connections and Communication Events When a connection is requested, all the information about this connection is contained in one packet transmitted from the initiating master device to the slave. This includes the adaptive frequency hopping channel map and the communication event interval for the subsequent connection. This included information means that no additional negotiation of the connection parameters needs to be performed before sending real application data. This saves time by not having to negotiate these parameters after the link has been established, and also saves energy. Communication events are points in time when two devices have agreed to transmit or receive packets for synchronization and latency requirements. In classic Bluetooth technology, these communication events are used in sniff mode and have a minimum time period when both devices have to listen or transmit to each other even if neither have anything to say. Comparison between Classic Bluetooth and Bluetooth low energy Technical Specification Classic Bluetooth Bluetooth low energy 100 m (330 ft) 200 m (660 ft)
Over the air data rate 1-3 Mb/s 1 Mb/s Application throughput 0.7-2.1 Mb/s 0.26 Mb/s Active slaves 7 Not defined; implementation dependent Security 64/128-bit and application layer user defined 128-bit AES with Counter Mode CBC-MACand application layer user defined Robustness Adaptive fast frequency hopping, FFC, fast ACK Adaptive frequency hopping, Lazy 24-bit CRC, Message Integrity Check Latency (from a non connected state) Typically 100 ms 6 ms Total time to send data (det.battery life) 100 ms 6 ms Voice capable Yes No Network topology Scatternet Star-bus Power consumption 1 as the reference 0.01 to 0.5 (depending on use case) Peak current consumption <30 Ma <20 mA (max 15 mA to run on coin cell battery) Service discovery Yes Yes Profile concept Yes Yes Primary use cases Mobile phones, gaming, stereo audio streaming, PCs, security, proximity, healthcare, sports & fitness, etc. Mobile phones, PCs, watches, sports and fitness, healthcare, security & proximity, automotive, home electronics, automation, Industrial, etc.