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IEEE 1609.12-2016 pdf free

IEEE 1609.12-2016 pdf free.IEEE Standard for Wireless Access in Vehicular Environments (WAVE)—Identifier Allocations.
PSIDs have two uses specified in IEEE Std 1609.3M. First, a service provider identifies advertised application-service opportunities by the PSID values in WAVE Service Advertisement messages it transmits. Second, the WAVE Short Message Protocol (WSMP) delivers WAVE Short Message content to higher layer entities based on the PSID value set by the sender in the message header. A third use of the PSID is specified in IEEE Std P1609.2/TM. A security crtificate lists the PSID value(s) that identifying application areas for which a sender is authorized to generate signed, secured protocol data units.
The fixed-length four-octet PSID format and values specified in trial-use IEEE Std 1609.3-2007 are deprecated, and the registration process described in that document is no longer in effect. None of these those values was were fielded for other than experimental purposes. The IEEE Registration Authority assignment procedures specified in that standard are inoperative.The PSID shares characteristics and its numbering space with the Intelligent Transportation Systems Application Identifer (ITS-AID) used in standards from other international standards organizations involved in Intelligent Transportation Systems including ISO, CEN, and ETSI. The specification of the ITS-AID and a high-level functional description of its management and assignment procedures can be found in ISO TS 17419 [B1413. The intention of the IEEE 1609 Working Group is to encourage the global uniqueness of the PSID ITS-AID values by coordinating allocations with the appropriate ITS-AID assignment entities.
This standard defines a compact encoding for PSID referred to as p-encoding. Octets are numbered from the left 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 PSID; 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“1110”in the four most- significant bits indicates a four-octet PSID.
In this document, p-encoded PSID values (in hexadecimal form) are preceded by“0p” rather than “0x” to distinguish them from PSID values that are not p-encoded. In Table 1, the final column provides equations that allow conversion between PSID values (represented here by “V”) and their p-encoded values (represented here by“P”).IEEE 1609.12 pdf free download.

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