越来越多的日常数字设备，包括智能手机、门锁，甚至最新的汽车，现在都使用一种称为空间感知的无线功能。具有空间感知功能的数字设备可以了解它相对于其他设备的位置，然后对这些设备的位置变化做出响应。空间感知功能使我们——这些数字设备的用户们，可以更轻松地度过每一天。

Network layer

Addressing formats 

The exchange of network layer data is supported by three addressing formats: normal, extended and mixed addressing. Each addressing format requires a different number of CAN frame data bytes to encapsulate the addressing information associated with the data to be exchanged. Consequently, the number of data bytes transported within a single CAN frame depends on the type of addressing format chosen.

The following (7.3.2 to 7.3.5) specifies the mapping mechanisms for each addressing format, based on the data link layer services and service parameters defined in ISO 11898-1.

Qualcomm Technologies International, Ltd. today continued to demonstrate its vision and leadership in the wireless audio space with the introduction of Qualcomm® aptX™ Lossless audio technology to its already extensive audio portfolio. aptX Lossless is a new capability of the proven aptX Adaptive technology and a new feature of Snapdragon Sound™ Technology that is designed to deliver CD quality 16-bit 44.1kHz lossless audio quality over Bluetooth® wireless technology.  Qualcomm Technologies has taken a systems level approach and optimized a number of core wireless connectivity and audio technologies, including aptX Adaptive, which work together to auto detect and scale-up and are designed to deliver CD lossless audio when a user is listening to a lossless music file and the RF conditions are suitable.

Murata has launched the world’s smallest ultra-wideband (UWB) module – measuring just 10.5 mm x 8.3 mm x 1.44 mm – that combines elevated levels of accuracy and reliability with low-power to ensure compact and battery-driven IoT devices operate as efficiently and cost-effectively as possible.

Qorvo, a leading provider of innovative RF solutions that connect the world announced the interoperability of its DW3000 family of products with the Apple U1 chip used in iPhone and Apple Watch models and the new Nearby Interaction protocol specification draft unveiled at the 2021 Worldwide Developers Conference. This compatibility will enable developers to easily evaluate new app experiences based on location, distance, and direction relative to a U1-equipped iPhone or Apple Watch. The DW3000 is Qorvo's next-generation ultra-wideband (UWB) chipset family and is ramping into full production in four variants, along with several modules and beta development kits.