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5GS protocol stack GTP protocol family

2021-06-23 22:05:52 Fan Guikai

Catalog

GTP Protocol family

GTP(GPRS Tunnelling Protocol,GPRS Tunnel protocol ) It's a group based on IP Communication protocol of , be used for GSM、UMTS、EPS and 5GS Hosted in network GPRS(General Packet Radio Service, General packet radio service ).

GTP The agreement now has 3 A version

  • Version 2: Used in EPC Core network ;
  • Version 1: Used in GSM and UMTS The Internet , And application to EPS、5GS In the network to transmit user data ;(NOTE: non-existent GTPv2-U agreement . stay EPS、5GS Network GTP-U Still used GTPv1-U.)
  • Version 0: It's an early version , By 1999 Standardized in version 1 replace .

GTP There are two main advantages in mobile networks

  1. GTP The inherent identifiable tunneling mechanism :UE Our business is carried by GTP TEID and IP Address to identify .
  2. GTP It can be for UE Mobility capabilities provided :UE adopt GTP Can continue through the same GW-U/UPF As an anchor for local mobility , And then connect to PDN/DN.
  3. </

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