IEEE Std 802.15.7 pdf free download
IEEE Std 802.15.7 pdf free download.Local and metropolitan area networks- Part 15.7: Short-Range Optical Wireless Communications.
2. Normative references
The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used: therefore, each referenced document is cited in text, and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
ANSI/INCITS 373: Fiber Channel Framing and Signaling Interface (FC-FS).’
IEEE Std 802.1 5.4TM20 15, IEEE Standard for Information technology—Telecommunications and
information exchange between systems—Local and metropolitan area networks—Specific requirements— Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate
Wireless Personal Area Networks (LR-WPANs):’
ITU-T 1.432.1, Series I: Integrated Services Digital Network, ISDN user-network interfaces—Layer I RecommendationsB-I S DN user-network interface—Physical layer specification: General characteristics, http://www. itu.int/rec/T-REC-I .432.1-I 99902-I/en.4
3. Definitions, acronyms, and abbreviations
For the purposes of this document, the following terms and definitions apply. The IEEE Standards Dictionary Online should be consulted for terms not defined in this clause.5
3.1 Definitions
blending: The disproportional merging of two diftèrent images as a single image.
color function: A function that provides information, such as device status and channel quality, to the human eye via color.
color stabilization: A control loop for the stabilization of the color emitted by color-shift keying (CSK) transmitters.
color visibility dimming (CVD) frame: A frame used for color, visibility, and dimming support.
compensation time: The idle time inserted in the idle pattern or in the data frame, where the light is turned ON or OFF with the appropriate ratio to meet dimming requirements.
dimming: Reducing the radiant power of a transmitting light.
idle pattern: A pattern whose duty cycle variation results in a change of brightness fbr dimming support. image sensor: A sensor that captures an image and translates it into a light-coded output signal. macro cell: An aggregate cell formed using all the cells available at the optical media.
Each device or coordinator has a unique 64-bit address. When a device associates with a coordinator node it is allowed to be allocated a short 16-bit address. Either address is allowed to be used for communication within the OWPAN managed by the coordinator. The coordinator may often be mains powered, while the devices will often be battery powered.
Each independent OWPAN has an identifier, as defined in 5.2.1.3 and 5.2.1.5. This OWPAN identifier allows communication between devices within a network using short addresses. The mechanism by which OWPAN identifiers are chosen is outside the scope of this standard.
The network formation is performed by the higher layer, which is not part of this standard. Apart from the peer-to-peer and star topologies, devices compliant to this standard arc also allowed to operate in a broadcast-only topology without being part of a network, i.e., without being associated to any device or having any devices associated to them. A brief overview on how each supported topology may be formed is provided in 4.2.1, 4.2.2, and 4.2.3.
In case illumination function is required. visibility support is also provided in the absence of communication or in the idle or receive modes of operation. The purpose of this mode is to maintain illumination and mitigate flicker.IEEE Std 802.15.7 pdf download.
