IEEE 1609.12-2019 pdf free download

IEEE 1609.12-2019 pdf free download.IEEE Standard for Wireless Access in Vehicular Environments ( WAVE ) Identifiers.
for a common registration service that helps to ensure globally unique assignments of identifier values for the PSII) and the ITS-A IF) is foreseen.
The IEEE-RA is responsible for handling PSID allocation requests, and for maintaining an online public listing of allocated PSIDs. The IEEE-RA maintains a website that includes information pertaining to PSIDs including a tutorial. FAQs, application form, and the public listing.
Allocated PSID values are listed on the IEEE-RA website. There arc also testing PSIDs that have been preallocated for use in research and development projects. These can be used by any organization in development of their application, while testing in a controlled environment such as a laboratory or test track. If experimental PSIDs are utilized in an open or public system. caution should be exercised to avoid conflicts with other experimental PSID users. The list of testing PSIDs can also be found on the IEEE-RA website.
A range of 64 PSID values has been allocated for unregistered use. A set of WAVE devices can use an unregistered PSID to convey a mutually agreed meaning. Both the meaning and the means by which the devices determine the meaning are outside the scope of the WAVE standards. There is no assurance that all devices operating in a given area attach the same meaning to the value.
PSIDs may be allocated for private use. A PSID is considered private if the application specification is not published.
4.2 P-encoding of PSIDs
This standard defines a compact encoding for PSID values referred to as p-encoding. This specification of the p-encoded form of the PSID is required by IEEE Std 1609.3. Octets are numbered from the lefl starting at zero (Octet 0). The length of the PSID is indicated by Octet 0. where the position of the first zero-value bit in descending order of bit significance in the octet indicates the length in octets of the p-encoded PSID. Using p-encoding, a binary ‘0” in the most-significant bit indicates a one-octet PSlD a binary “10” in the two most- significant bits indicates a two-octet PSID; a binary “110” in the three most-significant bits indicates a three- octet PSID; and a binary “I 110” in the four most-significant bits indicates a four-octet PSID.IEEE 1609.12-2019 pdf free download.