Like all other wireless base station equipment OEMs, Ericsson offers a baseband unit (BBU)/remote radio unit (RRU) BTS architecture in additional to traditional macrocell BTS cabinets.
RRU Cascading and RRU Interconnection
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Descripción: Comandos RRU
LTEDescrição completa
LTEDescripción completa
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for awakening chakras to reinvigorate body organs.
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McRNC Architecture and Configurations StudentHandoutA4
Cabling the BTS and Creating ConfigurationsFull description
McRNC Architecture and Configurations StudentHandoutA4Full description
McRNC Architecture and Configurations StudentHandoutA4Deskripsi lengkap
Overview • Goal of the Presentation: •This presentation attempts to layout the standard RRU and BBU configurations for the markets. Each configuration is a “per sector” view.
•The choice of RRU & BBU configurations depends on: • The required number of 1900 MHz Carriers (CDMA + EVDO) • Software release 2.0 timeline
• Diplexers are to be avoided • Exceptions when Two 1900 MHz RRUs required and only 1 antenna possible (example Flag Pole) • If Towers can not support RRUs, then Ground Based alternative can be considered •.
BBU3 Needs: • 1 CIMA cards (CDMA control) • 3 CICA-A or CICA-D cards (CDMA & EVDO traffic) Note – 800 MHz CDMA is set on one of the CICA cards
Note: For Sites with only 7 & 8 1900 MHz carriers (after SR 2.0) the 2nd 1900 MHz RRU can be avoided if all carriers are powered down 1dB (**RF Approval required)
CICA-D cards • Can only do 1 EVDO carrier • And, can do 1 Voice carrier (either 800 or 1900 mHz)
CICA –A cards • Can do 2 Voice Carriers (either carrier can be 1900 MHz or you can change one to 800 MHz) 1 BBU can support 3 traffic cards (or 6 carriers) • But, 4 EVDO’s will trigger 2nd BBU • 1 RRU can handle 1 CDMA BBU + 1 LTE BBU • a second CDMA BBU would require a 2nd RRU Attached is the formulas to calculate The correct number of CICA-A & CICA-D cards
