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How in lte differntiate cells whcih is under one eNB?

+2 votes

What I know means one eNB can serve one or more cells.
In each cell whether we are having transmitter or what?

posted Feb 5, 2015 by anonymous

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1 Answer

+5 votes

Each eNodeB in lte network is identified by one unique id i.e. global enodeb Id. Macro enodeb id is 20 bits long and each cell of this eNodeB has is identified by 28 bits long string. Left 20 most significant bits of cell identity is same as 20 bits of enodeb id and remaining 8 bits are used by each cell of enodeb to get unique number. 8 bits can constitute (0-254) unique numbers. Reason being, spec tells one enodeb can support up to 255 cells. By practically, a macro enodeb can have at max 3 cells.

At the radio physical layer, each cell is identified by its PCI values, which ranges value from 0 to 504.

answer Feb 5, 2015 by Harshita
Thanks harshita for your answer. if Two cells are running under one eNodeB, will both cells have two antenna's ?
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+2 votes

In LTE, number of cells in is caped to 32 in MeasObject->CellAddModList.
My ENB is has detected the more that 32 neighbor cells through ANR and there CIO is changes regularly as part of MRO feature.

So if CIO of all neighbor cells changes regularly how do i inform UEs about the latest CIO. Does UE stored the last CIO provided in its database even after a cell is removed from CellAddModLIst?

Please provide your inputs.


+3 votes

Suppose a eNB is shared between two operators so can he have multiple tracking area code ?

0 votes

As per LTE phr ce (power headroom report) , UE sends the UE transmission power left. In NR or EN-DC why it needs to send for each enb and gnb cell?