(1) (
Upper
Layer
Protocol) A protocol at a high layer of the protocol stack, such as the application layer or a layer between the application layer 7 and transport layer 4 (see
OSI model). Depending on context, it may just refer to the protocol directly above another.
(2) (
Ultra
Low
Power) An earlier name for the low- power mode in Bluetooth 4, ULP is also used to describe various low-power sensor networks (see
IoT). See
Bluetooth LE.
(3) (
Universal
Logging
Protocol) An attempt to standardize the content format of syslog messages. See
syslog protocol.