Wireshark-users: [Wireshark-users] 回复: can decode the "Transparent Container"
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From: damker <damker@xxxxxxxx>
Date: Thu, 25 Feb 2016 17:34:43 +0800
there are two containers, "source to target" and "target to source"
please decode them all;

6.3        Source to Target Transparent Container

The Source to Target Transparent Container contains information that shall be transferred transparently by CN entities from the source RAN to the target RAN.

When the target network is GERAN, the Transparent container field contains the value part of the Old BSS to New BSS Information IE defined in 3GPP TS 48.008 [8], i.e. octets 3 to n, excluding octet 1 (Element ID) and octet 2 (Length).

When the target network is UTRAN, this container carries the Source RNC to Target RNC Transparent Container IE defined in 3GPP TS 25.413 [9]. The Transparent container field contains a transparent copy of the corresponding ASN.1/PER IE (see subclauses 8.2.2 and 8.48 in 3GPP TS 29.274 [3]).

When the target network is E-UTRAN, the container carries the Source eNB To Target eNB  Transparent Container IE defined in 3GPP TS 36.413 [14]. The Transparent container field contains a transparent copy of the corresponding ASN.1/PER IE (see subclauses 8.2.2 and 8.48 in 3GPP TS 29.274 [3]).

The receiver of this Information Element shall ignore the length of the transparent container encoded in octet 5 and shall derive the actual length of the container from the length encoded in octets 2 to 3 minus 1. 

For backward compatibility, the sender of this Information Element shall set the octet 5 to the actual length of the transparent container if the size of the container is smaller or equal to 255 octets, and to the value "255" otherwise.

 

 

 

Bits

 

 

Octets

8

7

6

5

4

3

2

1

 

 

1

Type = 52 (decimal)

 

 

2 to 3

Length = n (decimal)

 

 

4

Spare

Instance

 

 

5

Length of the Transparent container

 

 

6 to (n+4)

Transparent container

 

Figure 6.3-1: Source to Target Transparent Container

6.4        Target to Source Transparent Container

The Target to Source Transparent Container contains information that shall be transferred transparently by CN entities from the target RAN to the source RAN.

When the target network is GERAN, the Transparent container field contains the value part of the Layer 3 Information IE defined in 3GPP TS 48.008 [8], i.e., octets 3 to n, excluding octet 1 (Element ID) and octet 2 (Length).

When the target network is UTRAN, this container carries the Target RNC to Source RNC Transparent Container IE defined in 3GPP TS 25.413 [9]. The Transparent container field contains a transparent copy of the corresponding ASN.1/PER IE (see subclauses 8.2.2 and 8.48 in 3GPP TS 29.274 [3]).

When the target network is E-UTRAN, the container carries the Target eNB To Source eNB Transparent Container IE defined in 3GPP TS 36.413 [14]. The Transparent container field contains a transparent copy of the corresponding ASN.1/PER IE (see subclauses 8.2.2 and 8.48 in 3GPP TS 29.274 [3]).

The receiver of this Information Element shall ignore the length of the transparent container encoded in octet 5 and shall derive the actual length of the container from the length encoded in octets 2 to 3 minus 1.

For backward compatibility, the sender of this Information Element shall set the octet 5 to the actual length of the transparent container if the size of the container is smaller or equal to 255 octets, and to the value "255" otherwise.

 

 

 

Bits

 

 

Octets

8

7

6

5

4

3

2

1

 

 

1

Type = 53 (decimal)

 

 

2 to 3

Length = n

 

 

4

Spare

Instance

 

 

5

Length of the Transparent container

 

 

6 to (n+4)

Transparent container

 

Figure 6.4-1: Target to Source Transparent Container


damker
 
发件人： damker
发送时间： 2016-02-25 17:30
主题： can decode the "Transparent Container"
there are many detail informations in the ie "Source to Target Transparent Container" in message "SRVCC PS to CS request" and "SRVCC CS to PS Request" message which is using in SV interface,can wireshark add the future to decode the container?


more description in ts 29.280:

6.4        Target to Source Transparent Container

The Target to Source Transparent Container contains information that shall be transferred transparently by CN entities from the target RAN to the source RAN.

When the target network is GERAN, the Transparent container field contains the value part of the Layer 3 Information IE defined in 3GPP TS 48.008 [8], i.e., octets 3 to n, excluding octet 1 (Element ID) and octet 2 (Length).

When the target network is UTRAN, this container carries the Target RNC to Source RNC Transparent Container IE defined in 3GPP TS 25.413 [9]. The Transparent container field contains a transparent copy of the corresponding ASN.1/PER IE (see subclauses 8.2.2 and 8.48 in 3GPP TS 29.274 [3]).

When the target network is E-UTRAN, the container carries the Target eNB To Source eNB Transparent Container IE defined in 3GPP TS 36.413 [14]. The Transparent container field contains a transparent copy of the corresponding ASN.1/PER IE (see subclauses 8.2.2 and 8.48 in 3GPP TS 29.274 [3]).

The receiver of this Information Element shall ignore the length of the transparent container encoded in octet 5 and shall derive the actual length of the container from the length encoded in octets 2 to 3 minus 1.

For backward compatibility, the sender of this Information Element shall set the octet 5 to the actual length of the transparent container if the size of the container is smaller or equal to 255 octets, and to the value "255" otherwise.

 

 

 

Bits

 

 

Octets

8

7

6

5

4

3

2

1

 

 

1

Type = 53 (decimal)

 

 

2 to 3

Length = n

 

 

4

Spare

Instance

 

 

5

Length of the Transparent container

 

 

6 to (n+4)

Transparent container

 

Figure 6.4-1: Target to Source Transparent Container

damker