8.26 S1-U Data Forwarding (S1UDF)

29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 16Stage 3TS

The Serving GW Address and Serving GW S1-U TEID consists of the S1-U Tunnel information allocated by the Serving GW for an EPS Bearer identified by the EPS Bearer ID which requires data forwarding during active handover from E-UTRAN Access to cdma2000 HRPD Access.

The spare bits indicate unused bits, which shall be set to 0 by the sending side and which shall not be evaluated by the receiving side.

Bits

Octets

8

7

6

5

4

3

2

1

1

Type = 91 (decimal)

2 to 3

Length = n

4

Spare

Instance

5

Spare

EPS Bearer ID

6

Serving GW Address Length = m

7 to (m+6)

Serving GW Address [4..16]

(m+7) to (m+10)

Serving GW S1-U TEID

Figure 8.26-1: S1-U Data Forwarding Info