CE Consumption of Huawei RAN12.0

Document Title Security Level:

Baseband Resources

Definition of the CEChannel Element (CE) indicates the processing capacity by measuring the baseband resources occupied by services.

• One UL CE refers to the baseband resources used by 12.2 kbit/s voice services (SF = 64) and 3.4 kbit/s signaling.

• One DL CE refers to the baseband resources used by 12.2 kbit/s voice services (SF = 128) and 3.4 kbit/s signaling.

Resource Consumption of R99 Services

Traffic Type

Uplink Downlink

Spreading Factor

Number of CEs

Spreading Factor

Number of CEs

AMR 12.2 kbit/s SF64 1 SF128 1

32 kbit/s SF32 1.5 SF64 1

64 kbit/s SF16 3 SF32 2

128 kbit/s SF8 5 SF16 4

384 kbit/s SF4 10 SF8 8

HSDPA SF16 SF16

HSUPA

Uplink Resource Consumption of HSUPA Services

The channels for HSUPA services are dedicated channels, and the resources consumption is measured in CE. After HSUPA is introduced, all of the UL CE resources are shared by R99 and HSUPA services. The following table lists the UL CE resources consumption principle of HSUPA services.

RLC Rate (kbit/s) Spreading Factor

RAN10.0 RAN11.0

RAN12.0

10ms 2ms

≤ 32 - SF32 1.5 1 1

32 to 64 - SF16 3 2 2

64 to 128 - SF8 5 4 4

128 to 672 640 SF4 10 8 8

2023-04-08 HUAWEI Confidential Page1, Total4


672 to 1376 640 to 1280 2*SF4 20 16 16

1376 to 1888

1280 to 2720 2*SF2 32 32 32

2720 to 3840 2*SF2 + 2*SF4 48 48 48

4000 to 10880

2*M2+2*M4 Not supported

Not supported

64

If the SRB signaling is carried on the R99-DCH, an extra CE is consumed. Thus, one CE should be added to the CE number in the preceding table. From RAN10.0, Huawei NodeB supports the SRB over HSUPA feature. This feature is optional. If this feature is purchased, no extra CE is consumed for the SRB.

Downlink Resource Consumption of HSDPA Services

The processing capacity of HSDPA is calculated by HSDPA codes instead of the CE number. One SF16 code resource consumed by HSDPA user is defined as one HSDPA code.

On the baseband unit of the 3900 series base station, the resources for HSDPA services and the resources for R99 services are independent of each other. Therefore, the HSDPA services do not consume the R99 CE resources on the downlink. The processing capacity of the WBBPb4 is R99 384 CEs+HSDPA 90 HS-DSCH codes, as shown in the following figure.

Downlink Signaling Resource Consumption of HSDPA

Each HSDPA or R99 user has one associated signaling. When the RRC connection is established, the SRB is set up to transfer the signaling between the UE and the UTRAN.

For an R99 user, the signaling and the R99 services together occupy one DCH. Thus, you only need to calculate the CEs consumed by the R99 service. The signaling does not consume CEs independently.



For an HSDPA user without R99 services, the signaling independently occupied one DCH, and one CE is consumed. The consumed CE belongs to the R99 DL CE resources.

For an HSDPA user with R99 services, the signaling and the R99 services together occupy one DCH. Thus, you only need to calculate the CEs consumed by the R99 services. The signaling does not consume CEs independently.

From RAN10.0, Huawei NodeB supports the SRB over HSDPA feature. This feature is optional. If this feature is purchased, no extra CE is consumed for the SRB.

CE Consumption for HSPA+ Features

RAN11.0 RAN12.0

VOIP over HSPA 10ms

DL: No CE is consumed.

UL: 2 CEs are consumed for SF16.


UL: 1 CE is consumed for SF32.

CS over HSPA 10ms





VOIP over HSPA 2ms

CS over HSPA 2ms

Not promoted. The strategy for TTI is 10 ms. The default TTI is 10 ms.



CE consumption depends on the D board. If the E board is used for 2 ms TTI, the TTI is reconfigured as 10 ms.

DL 64QAM DL: No CE is consumed and the baseband resource consumption is calculated on the basis of HSDPA codes.

UL: No extra CE is consumed for the HS-DPCCH.

DL: No CE is consumed and the baseband resource consumption is calculated on the basis of HSDPA codes.


DL MIMO DL: No CE is consumed and the baseband resource consumption is calculated on the basis of HSDPA codes.

UL: One extra CE is consumed for the HS-DPCCH of each UE.

DL: No CE is consumed and the baseband resource consumption is calculated on the basis of HSDPA codes.




RAN11.0 RAN12.0

DL DC-HSDPA NA DL: No CE is consumed and the baseband resource consumption is calculated on the basis of HSDPA codes.


UL 16 QAM NA UL: One UE consumes 64 CEs.


CE Consumption of Huawei RAN12.0

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