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Content for  TS 25.446  Word version:  16.0.0

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1  ScopeWord‑p. 6

The present document specifies the MBMS Synchronisation Protocol. For the release of this specification it is used on Iu towards UTRAN and M1 towards E-UTRAN.

2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 25.410: "UTRAN Iu interface: General Aspects and Principles".
[3]
TS 25.323: "Packet Data Convergence Protocol (PDCP) specification".
[4]
TS 25.346: "Introduction of the Multimedia Broadcast Multicast Service (MBMS) in the Radio Access Network (RAN); Stage 2".
[5]
TS 36.440: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); General aspects and principles for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN".
[6]
TS 36.300: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description".
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3  Definitions and abbreviations

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
RAN Access interface:
interface between the Core Network and the Radio Access Network.
RAN Access node:
termination point of the RAN Access interface at the Radio Access Network.
MBMS RAB:
denotes the Radio Access data bearer together with the RAN Access Interface data bearer for MBMS service user data transmission.
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3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
MRNC
MBMS Master RNC (as specified in TS 25.346)
SC-PTM
Single Cell - Point To Multipoint
SYNC
MBMS synchronisation protocol

3.4  Specification notationsWord‑p. 7

For the purposes of the present document, the following notations apply:
Procedure
When referring to a procedure in the specification the Procedure Name is written with the first letters in each word in upper case characters followed by the word "procedure", e.g. Iu Rate Control procedure.
Frame
When referring to a control or data frame in the specification, the CONTROL/DATA FRAME NAME is written with all letters in upper case characters followed by the words "control/data frame", e.g. TIME ALIGNMENT control frame.
IE
When referring to an information element (IE) in the specification the Information Element Name is written with the first letters in each word in upper case characters and all letters in Italic font followed by the abbreviation "IE", e.g. Frame Number IE.
Value of an IE
When referring to the value of an information element (IE) in the specification the "Value" is written as it is specified in subclause 5.6.3 enclosed by quotation marks, e.g. "0" or "255".
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