User's Manual

U
M10936
P
N7150 User Manual
UM
10936 All information provided in this document is subject to legal disclaimers.
U
ser manual
CO
MPANY PUBLIC
Rev. 2.0 — 6 November 2020
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17 of 127
2.
3.3 Data Packets
T
he Data Packet structure is detailed below.
Payload Length (L)MT Conn ID
3 4
8
8
Octet 0 Octet 1 Octet 2
P
B
F
1
Payload
L bytes
Octet 3 ... Octet (2+L)
Packet Header
RFU
F
ig 13. Data Packet Structure
E
ach Data Packet SHALL have a 3 octet Packet Header and MAY have additional Payload
for carrying a Data Message or a segment of a Data Message.
NOTE: In the case of an ‘empty’ Data Message, only the Packet Header is sent.
 Message Type (MT)
Refer to section 2.3.1 for details of the MT field.
 Packet Boundary Flag (PBF)
Refer to section 2.3.1 for details of the PBF field.
 Connection Identifier (Conn ID)
The Connection Identifier (Conn ID) SHALL be used to indicate the previously setup
Logical Connection to which this data belongs. The Conn ID is a 4 bit field containing a
value from 0 to 15.
 Payload Length (L)
The Payload Length field indicates the number of Payload octets present. The Payload
Length field is an 8 bit field containing a value from 0 to 255
.