When you study the 5G user plane protocol stack, you must observe that the SDAP is added. Why does the NR system need SDAP?
- Jan 03 Fri 2020 18:04
Why does 5G NR need Service Data Adaptation Protocol (SDAP)
- Jul 25 Wed 2018 16:17
RFC 4566 - Session Description Protocol (SDP) Introduction and example
In my previous article “
RFC 3261 – Session Initiation Protocol (SIP) Parameters
- Jun 22 Fri 2018 16:36
RFC 3261 – Session Initiation Protocol (SIP) Parameters
- May 03 Thu 2018 16:29
SIP Header 介紹 (1)
上圖是UE向網路註冊VoLTE服務所送的SIP Message,以下介紹幾個SIP Header:
- Apr 23 Mon 2018 18:19
25.331_8.1.1.6.1_System Information Block type 1
- Apr 23 Mon 2018 16:08
24.081_2_Calling Line Identification Restriction (隱藏號碼)
- Sep 12 Tue 2017 10:11
23.003_4.1_Location Area Identification
- Sep 08 Fri 2017 17:51
25.331_8.1.8_Initial Direct Transfer
- Jun 28 Wed 2017 14:34
Cell re-selection, Handover and Redirection
Before starting this topic, we should know what is IDLE and CONNECTED mode first. (#LTE RRC States)
1. Cell re-selection: IDLE mode -> IDLE mode