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What is P-TMSI used for in GPRS?

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Question added by Yassir SiragEldin Merghani , Telecommunications Engineer , Rakuten
Date Posted: 2015/11/15
Greg Chapman
by Greg Chapman , Customer Services Engineer , Tektronix Australia PTY LTD

The P-TMSI is used as a temporary identity  to contact and identify a user accessing the network.  Its used in paging and attaching with the Core network. as well as redirection in the case of node failure in SGSN in Pool.. But not limited to either..

Sunil Kumar
by Sunil Kumar , Practice Director-5G Core, ORAN and Telco Security , Wipro Limted

P-TMSI will be used for paging & RAU Updates.

Mohammad Amjad Hussain
by Mohammad Amjad Hussain , Telecom Engineer , Gulf Business Horizon Saudi arabi

A packet temporary mobile subscriber identity (P-TMSI) is assigned to a GPRS MS at the time of GPRS attach

hassen Bentaher
by hassen Bentaher , stagiaire , BIAT

A packet temporary mobile subscriber identity (P-TMSI) is assigned to a GPRS MS at the time of GPRS attach. Like TMSI, P-TMSI is used to avoid transmitting IMSI over the air interface. P-TMSI is of local significance and is applicable in the area served by an SGSN. If the MS moves out to a new SGSN area, the current serving SGSN assigns a new P-TMSI to the MS.

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