Multicast-broadcast single-frequency network: Difference between revisions
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==External |
==External Links== |
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*3GPP specifications [http://www.3gpp.org/ftp/Specs/html-info/36201.htm TS 36.201] and [http://www.3gpp.org/ftp/Specs/html-info/36300.htm TS 36.300] |
*3GPP specifications [http://www.3gpp.org/ftp/Specs/html-info/36201.htm TS 36.201] and [http://www.3gpp.org/ftp/Specs/html-info/36300.htm TS 36.300] |
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*[http://www.beyond4g.org/is-lte-capable-of-enabling-new-tv-experience Is LTE capable of enabling new TV experience?] (BEYOND 4G: Telecom Research and News Analysis) |
*BP Tiwari: [http://www.beyond4g.org/is-lte-capable-of-enabling-new-tv-experience Is LTE capable of enabling new TV experience?] (BEYOND 4G: Telecom Research and News Analysis, June 4, 2010) |
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*[http://www.teleca.com/Renderers/ShowMedia.ashx?id=e82018dc-3450-48e1-8f61-4db3624262e5 |
*Santhanaraj Muthusamy: [http://www.teleca.com/Renderers/ShowMedia.ashx?id=e82018dc-3450-48e1-8f61-4db3624262e5 Solution Area: e-MBMS in LTE] (Teleca White Papers, February 2011) |
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[[Category:Wireless networking]] |
[[Category:Wireless networking]] |
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Revision as of 22:22, 29 September 2011
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Introduction
Multicast-Broadcast Single Frequency Network (MBSFN) is a communication channel defined in 3GPP's 4G cellular networking standard called Long Term Evolution (LTE). It can deliver services such as mobile TV using the LTE infrastructure, and is expected to compete with other mobile/handheld TV broadcast systems such as DVB-H, 1seg, CMMB, or T-DMB [1] [2] . This enables network operators to offer mobile TV without the need for additional expensive licensed spectrum and without requiring new infrastructure and end-user devices.
Technical Details
LTE's Enhanced Multimedia Broadcast Multicast Services (E-MBMS) provides transport features for sending the same content information to all the users in a cell (broadcast) or to a given set of users (subscribers) in a cell (multicast). It must not be confused with IP-level broadcast or multicast, which offer no sharing of resources on the radio access level. In E-MBMS it is possible to either use a single eNode-B or multiple eNode-Bs for transmission to multiple UEs. MBSFN is the definition for the latter[3].
MBSFN is a transmission mode which exploits LTE's OFDM radio interface to send multicast or broadcast data as a multicell transmission over a synchronized single-frequency network (SFN). The transmissions from the multiple cells are sufficiently tightly synchronized for each to arrive at the UE within the OFDM Cyclic Prefix (CP) so as to avoid Inter-Symbol Interference (ISI). In effect, this makes the MBSFN transmission appear to a UE as a transmission from a single large cell, dramatically increasing the Signal-to-Interference Ratio (SIR) due to the absence of inter-cell interference [4].
Reference
- ^ "Long Term Evolution (LTE): A Technical Overview" (PDF). Motorola Technical White Paper. p. 10.
{{cite web}}: More than one of|pages=and|page=specified (help) - ^ Turner, Lorraine. "3G evolution to rival DVB-H, WiMAX - Analysys". Total Telecom. Retrieved 09 February 2006.
{{cite web}}: Check date values in:|accessdate=(help) - ^ Lescuyer, Pierre (2008). Evolved Packet System (EPS): The LTE and SAE Evolution of 3G UMTS. Wiley. p. 140-143. ISBN 978-0470059760.
{{cite book}}: More than one of|pages=and|page=specified (help) - ^ Sesia, Stefania (2009). LTE - A Pocket Dictionary of Acronyms (PDF). Wiley. p. 45. ISBN 978-0-470-69716-0.
{{cite book}}: More than one of|pages=and|page=specified (help)
External Links
- 3GPP specifications TS 36.201 and TS 36.300
- BP Tiwari: Is LTE capable of enabling new TV experience? (BEYOND 4G: Telecom Research and News Analysis, June 4, 2010)
- Santhanaraj Muthusamy: Solution Area: e-MBMS in LTE (Teleca White Papers, February 2011)