Table of Contents
This document describes the service request procedure defined as EMM Case 4 in our technical document, “Eleven EMM Cases in an EMM Scenario” . This procedure is performed when an inactive UE in Idle state wishes to get activated to handle traffic when there is new traffic. New user traffic can be uplink traffic from UE or downlink traffic from the network to UE. The UE’s E-UTRAN resources (allocated by eNB) have been released, and the UE has been in ECM/RRC-Idle state. Thus, in order for the UE to receive or send user traffic, DL or UL, it needs to transmit to ECM/RRC-Connected state through the service request procedure so that E-UTRAN resources can be allocated again.
This document explains the service request procedure in an LTE network.
Chapter 2 categorizes different cases of service request depending on where new traffic is generated.
Chapter 3 and 4 describe distinct procedures required in each service request case. Finally,
Chapter 5 summarizes how information elements in EPS entities are different before and after the procedure.
“At this time, the eNB allocates eNB UE S1AP ID, and includes it in the Initial UE Message sent to the MME. ”
eNB UE S1AP ID --》 eNB S1AP UE ID. Right?
Is there Any Timer defined for Inital Context Setup Request/ Response?
Dear Netmanias team,
Thanks for your explanation, can you please explain what happens when the Service Request procedure is rejected. If possible please explain the behavior for different cause codes.
I have a question , After establishing the internet connection Ue is sending SR for three times since Network is ignoring the Service request . But according to spec it should send for five times .
What could be the reason here ?