Product Info

LTE Module Series
BG96 Hardware Design
BG96_Hardware_Design 33 / 81
within a certain delay dependent on the DRX cycle value.
Applications that want to use e-I-DRX need to consider specific handling of
mobile terminating services or data transfers, and in particular they need to
consider the delay tolerance of mobile terminated data.
In order to negotiate the use of e-I-DRX, the UE requests e-I-DRXparameters
during attach procedure and RAU/TAU procedure. The EPC may reject or
accept the UE request for enabling e-I-DRX. In case the EPC accepts e-I-DRX,
the EPC based on operator policies and, if available, the e-I-DRXcycle length
value in the subscription data from the HSS, may also provide different values
of the e-I-DRXparameters than what was requested by the UE. If the EPC
accepts the use of e-I-DRX, the UE applies e-I-DRX based on the received
e-I-DRXparameters. If the UE does not receive e-I-DRXparameters in the
relevant accept message because the EPC rejected its request or because the
request was received by EPC not supporting e-I-DRX, the UE shall apply its
regular discontinuous reception.
Ife-I-DRX is supported by the network, then it can be enabled by
AT+CEDRXS=1command.
NOTE