Cisco Cisco Packet Data Gateway (PDG) Nota De Lançamento
MVG Changes in Release 15.0
MVG Enhancements for September 30, 2013 ▀
Cisco ASR 5x00 Release Change Reference ▄
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Video Pacing Qualification for Release 15.0
The video pacing feature enables mobile operators to limit the download speed of over-the-top, progressive download
video (video clips provided to subscribers via HTTP downloads over TCP flows) so that their subscribers download just
enough video content in time for smooth playback. By limiting the bit rate of progressive downloads to the actual
encoded bit rate of each video clip, mobile operators can significantly reduce their air interface bandwidth usage.
video (video clips provided to subscribers via HTTP downloads over TCP flows) so that their subscribers download just
enough video content in time for smooth playback. By limiting the bit rate of progressive downloads to the actual
encoded bit rate of each video clip, mobile operators can significantly reduce their air interface bandwidth usage.
This feature is now qualified for the 15.0 Release.
CAE Video Re-addressing Qualification for Release 15.0
The Mobile Video Gateway can re-address HTTP video requests intended for video content Origin Servers (OS) toward
the Cisco CAE for retrieval of optimized video content. The Cisco CAE is an optional component of the Cisco Mobile
Videoscape. It functions in a video server cluster to bring additional optimization capabilities to the Mobile Videoscape.
the Cisco CAE for retrieval of optimized video content. The Cisco CAE is an optional component of the Cisco Mobile
Videoscape. It functions in a video server cluster to bring additional optimization capabilities to the Mobile Videoscape.
This feature is now qualified for the 15.0 Release.
New MVG x-headers for CAE Readdressing
Additional MVG x-headers are introduced with this release to insert into the HTTP header that is sent to the CAE. The
following MVG x-headers are now introduced in 15.0 for MVG x-header insertion:
following MVG x-headers are now introduced in 15.0 for MVG x-header insertion:
x-congestion
x-ToD
x-forwarded-dest-addr-port
For a complet list of supported MVG x-headers, refer to the Mobile Video Gateway Administration Guide.
MVG X-Header Insertion After TCP Proxy Disabled
TCP proxy is disabled as soon as a response packet is received by MVG from CAE. For persistent connections with
continuous requests from the UE, once a connection is established with the CAE for processing the first video request,
TCP proxy is disabled and the connection with the CAE is kept active until the end of the flow. Both video and non-
video requests are processed by a CAE that is capable of processing both types of requests. The MVG x-headers which
are critical for the functionality of the MVG CAE re-addressing feature will be inserted to the packets even after TCP is
disabled.
continuous requests from the UE, once a connection is established with the CAE for processing the first video request,
TCP proxy is disabled and the connection with the CAE is kept active until the end of the flow. Both video and non-
video requests are processed by a CAE that is capable of processing both types of requests. The MVG x-headers which
are critical for the functionality of the MVG CAE re-addressing feature will be inserted to the packets even after TCP is
disabled.
Modified MVG Features
This section identifies MVG features modified in release 15.0.
Video Optimization License Changes
The MVG CAE re-addressing feature requires MVG to insert extra x-headers like RAT, device type, user profile, time
of day, and congestion level in the HTTP message before forwarding the request to the CAE.
of day, and congestion level in the HTTP message before forwarding the request to the CAE.
Previous Behavior: In earlier releases, in addition to the ECS, and MVG (video optimization) licenses, a seperate
HTTP Header Enrichment license was required to use the ECS x-header insertion feature.
HTTP Header Enrichment license was required to use the ECS x-header insertion feature.
New Behavior: With this release, the MVG (video optimization) license includes limited support to x-header insertion.
The MVG license now includes support for x-headers that are required by the MVG CAE re-addressing feature. For a
complete list of supported x-headers, see the CAE Video Re-addressing section in the Mobile Video Gateway
Administration Guide.
The MVG license now includes support for x-headers that are required by the MVG CAE re-addressing feature. For a
complete list of supported x-headers, see the CAE Video Re-addressing section in the Mobile Video Gateway
Administration Guide.