IEEE Std 802.15.8-2017 pdf download – IEEE Standard for Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Peer Aware Communications (PAC).
4.2.2 Numbers Numbers are represented in decimal (nnn) or binary (0bnnn) notation with the number of digits indicated, or hexadecimal (0xmm) notation. For example, 0b001 is a 3 digit binary number of value 1 and 0x01 is the hexadecimal number of value 1. Numbers specified in fields, tables, and parameters of service primitives can be integers or single-precision floating-point numbers. Numbers specified as“b-bit integers” denote b- bit unsigned integers, where b is a positive integer number. For simplicity, 8-bit unsigned integers are specified as“’Integers”. “Signed integers”are 32-bit signed integers with two’ s complement for negative numbers. Single-precision floating-point numbers are specified as“Float. 4.2.3 Strings The term string is used when the field’s content is not interpreted as a number specified in 4.2.2, but rather mapped onto another format. For example, the octet 0b01000001 represents the letter “A”in the extended ASCII format, or cryptographic keys. 4.2.4 Transmission order For every field, the bit transmission order shall be performed from the leftmost octet (LMO) to the rightmost octet (RMO) in the field, and inside an octet from the least significant bit (LSB) to the most significant bit (MSB); as shown in Figure 2, where the content’s field is assumed as AC-DE-48-23-45-67 for illustration.
5.2 Components of an IEEE 802.15.8 PAC network A system conforming to this standard consists of two or more PDs. PDs operating on the same physical channel constitute a PAC network. AIll PDs in a PAC network are equal in terms of operation. 5.3 Network topologies Several topologies, such as mesh topology or star topology, may be used to support interactions among PDs for various services. One-to-one, one-to-many, and many-to-many topologies can be formed. This standard can supports simultaneous communication sessions for different applications and participation in multiple independent communication sessions with different peers at the same time. See Figure 3.