Congestión de CE

[pintor63]

CE resources are a type of NodeB hardware resource. The number of CEs supported by single NodeB indicates the channel demodulation capabilities resource of the NodeB.
In a RAN, CE resources are managed by both the RNC and NodeB. The NodeB reports its CE capacity to the RNC. The RNC determines whether to admit a new service based on the number of CEs that need to be consumed and controls CE resources during CE congestion. This ensures the proper use of CE resources. The NodeB dynamically manages CE resources and rapidly adjusts the number of CEs that can be consumed based on the actual service rate. This increases CE resource usage.
Basic Channel Element Concepts
CE is a basic unit that measures the channel demodulation capabilities of a NodeB. CEs are classified into uplink (UL) CEs and downlink (DL) CEs.
One UL CE needs to be consumed by a UL 12.2 kbit/s voice service (SF = 64) plus 3.4 kbit/s signaling.
One DL CE needs to be consumed by a DL 12.2 kbit/s voice service (SF = 128) plus 3.4 kbit/s signaling.


CE Sharing in a Resource Group
To facilitate baseband resource management, NodeB baseband resources fall into UL and DL resource groups. The UL and DL resource groups are independent with each other.
UL Resource Group
UL resource group is a UL resource pool shared on a per-channel basis, more than one cell can be setup in one UL resource group, One UL resource group can have multiple baseband boards, but one board can belong to only one UL resource group. CE resources in one UL resource group can be shared by baseband boards. This means that UEs in a cell in a UL resource group can set up services on any board in the group. The physical CE capacity of a UL resource group is the total CE capacity of baseband boards in the group.
DL Resource Group
Different from a UL resource group, a DL resource group is shared on a per-cell basis. Resources in a DL resource group are allocated to each baseband board based on cells; one board can be configured to multiple DL resource groups. DL CE resources for UEs in the same cell can be provided by any baseband board in the DL resource group. CE resources in one DL resource group can be shared only within a baseband board.
Example:
LSD DLGROUP;
List DLGROUP site
------------
DL BB Resource Group No. = 0
Cabinet No. of DL Process Unit 1 = 0
Subrack No. of DL Process Unit 1 = 0
Slot No. of DL Process Unit 1 = 3
(Number of results = 1)

List DLGROUP
------------
DL BB Resource Group No. = 1
Cabinet No. of DL Process Unit 1 = 0
Subrack No. of DL Process Unit 1 = 0
Slot No. of DL Process Unit 1 = 0
Cabinet No. of DL Process Unit 2 = 0
Subrack No. of DL Process Unit 2 = 0
Slot No. of DL Process Unit 2 = 1
(Number of results = 1)


List ULGROUP site
------------
UL BB Resource Group No. = 0
Demodulation Work Mode = 2-Channels Demodulation Mode
Cabinet No. of UL Process Unit 1 = 0
Subrack No. of UL Process Unit 1 = 0
Slot No. of UL Process Unit 1 = 0
Cabinet No. of UL Process Unit 2 = 0
Subrack No. of UL Process Unit 2 = 0
Slot No. of UL Process Unit 2 = 1
Cabinet No. of UL Process Unit 3 = 0
Subrack No. of UL Process Unit 3 = 0
Slot No. of UL Process Unit 3 = 3

verify DL BB RESOURCE GROUP
LST LOCELL;
Local_Cell_ID Cell_ID Site_No. Sector_No. UL_BB_Resource_Group_No. DL_BB_Resource_Group_No. Local_Cell_Radius(m)

44441 44441 219 0 0 29000
44442 44442 219 0 0 29000
44443 44443 219 0 0 29000
44444 44444 219 0 0 29000
44445 44445 219 0 0 29000
44446 44446 219 0 0 29000

to distribute loads use the DL BB resource Group N°1 on DL sectors 4444/5 y 6.
procedure
Disable the cell from the RNC
DEA UCELL:CELLID=44444;
Change the cell's config from Node
MOD LOCELL LOCELL=44444,SECT=REMOTE_SECTOR,DLGROUPNO=1;
Activate the cell
ACT UCELL:CELLID=4444;
LST DLGROUP;

the same for the sectors 5 y 6
LST LOCELL;
Local_Cell_ID Cell_ID Site_No. Sector_No. UL_BB_Resource_Group_No. DL_BB_Resource_Group_No. Local_Cell_Radius(m)

44441 44441 219 0 0 29000
44442 44442 219 0 0 29000
44443 44443 219 0 0 29000
44444 44444 219 0 1 29000
44445 44445 219 0 1 29000
44446 44446 219 0 1 29000


with this low CE congestion of a site

[RFoptimizer]

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