Wireless Oom » s-rnti

UMTS address

wirelessoom — Sun, 26 Jul 2009 16:28:36 +0000

UMTS address can be classified

1. CN address

- IMSI

-TMSI

-P-TMSI

2. UTRAN address

- S-RNTI

- U-RNTI

- C-RNTI

3. UE ID dedicated channels

wirelessoom — Sun, 26 Jul 2009 16:23:33 +0000

The U-RNTI is assigned by the SRNC and uniquely identifies the UE within the UTRAN.

It is used when a UE cannot be identified in the UTRAN, e.g.,

first access after a UE did cell change (cell update or URA update) or for UTRAN originated paging.

U-RNTI: RNC id + S-RNTI

32 bits

wirelessoom — Sun, 26 Jul 2009 16:19:17 +0000

S-RNTI is assigned by the SRNC.

It is uniquely identified within the SRNC.

It is 20 bits.

This id is used by UE, SRNC, DRNC.

wirelessoom — Sun, 26 Jul 2009 16:12:51 +0000

There are three types of UTRAN addresses:

1. s-RNTI

2. u-RNTI

3. c-RNTI