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Purpose of RRC connection reconfiguration message in LTE flow ?

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Purpose of RRC connection reconfiguration message in LTE flow ?
posted Apr 22, 2016 by Arijit Chakraborty

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Please check http://tech.queryhome.com/23947/lte-what-is-the-use-rrc-connection-reconfiguration-message

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1 Answer

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There are multiple use of RRC Connection Reconfiguration message. After establishing SRB1, other dedicated configurations are sent from eNodeB to UE by using the rrc connection reconfiguration message. During the different procedures such as handover, dedicated bearer establishment, bearer release etc.

answer Apr 22, 2016 by Harshita
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During attach procedure, UE sends "Attach Request" along with "RRC Connection Setup Complete", eNodeB sends "Attach Accept" along with "RRC Connection Reconfiguration then why UE does not send "Attach Complete" along with "RRC Connection Reconfiguration Complete" message ? What could be the reason for defining the messages so ?

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Is DRX will by default present in UE?or will it be assigned by eNB?
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It may be an easy question but still I have some doubt.
How RRC Connection setup procedure gets impacted with the presence of "S-TMSI" as an UE-Identity within the RRC Connection Request message ?
Note: RRC Connection request message can carry either 5 bytes long (S-TMSI) or 5 bytes long random value.

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