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What are the differences between per-Rel 9 and Rel-9 UMTS components?

+2 votes
90 views

I find in a lot of places mentions of Rel-9 and pre-Rel9. I thought it will be a useful discussion to put together the differences.

posted Jul 3, 2013 by Chandra Javalkar

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Rel9/Pre Rel9 or Rel8/Pre Rel8

1 Answer

+1 vote

Very generic question not sure if it is UMTS or LTE. Let me put something here related with MBMS

MBMS in UMTS/WCDMA offers 6 mobile TV channels at a data rate of 128 kbps in a 5 MHz channel. Also the FDMA/TDMA- and CDMA-based access technologies for 2G (GSM) and 3G (WCDMA) are not well-suited for broadcast. All classical broadcast technologies (e.g. Digital Video Broadcast (DVB), Digital Audio Broadcast (DAB)) utilizing Orthogonal Frequency Division Multiplex (OFDM) as the underlying transmission scheme and so does LTE.

In addition two aspects are impacting the success for a MBMS service from a technical perspective. First, good coverage, even at the cell edge, and second low power consumption. Evolved MBMS (eMBMS) as defined in 3GPP Release 8 and 9 aims to tackle these aspects. The goal is to increase spectral efficiency at the cell edge up to 1bps/Hz while realizing a Single Frequency Network (SFN). In addition MBMS capabilities are increased compared to 3G, by offering 20 TV channels at a data rate of 256 kbps in a 5 MHz channel. However, eMBMS has not been identified being critical for commercial LTE deployment. Therefore the specification has been segmented by adding physical layer aspects already to 3GPP Release 8 and have higher layer and network related aspects completed within 3GPP Release 9.

This is one aspect of Release 8/9 related with MBMS.

answer Jul 3, 2013 by Salil Agrawal
What about in the core n/w, I came across different behaviours of pre-rel9 and rel9 S/GGSN?
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