4G-4G Traffic sharing for LTC(Low Throughput Cells) improvement in Huawei LTE

In This Chapter I would like to share about LTC improvement by traffic sharing/offload traffic 4G-4G in Huawei 4G LTE. There are many way to improve throughput in 4G Huawei such as:Bandwidth Upgrade,Sharing traffic 4G-3G,sharing traffic 4G-4G(High traffic 4G cells to surroundings low traffic), Parameter adjustment such as:activate EPFENHANCEDSWITCH,Clearing overshooting,Upgrade transmission Capacity,Physical traffic sharing(antenna adjustment) and etc.

User DL Throughput will be improved by traffic sharing only if surroundings cells are in light load(not high traffic) because traffic shifting from cells with low throughput  to surroundings cells with low traffic and high throughput. Choose candidate cells for sharing traffic manually in map to maximize the result.Here are parameter setting that need to be set for 4G sharing traffic in Huawei LTE:

Parameter setting in cells LTC(Low Throughput cells):

Parameter setting in Candidate cells:

Script for Source_Congested cells:MOD EUTRANINTRAFREQNCELL: LocalCellId=XX, Mcc="YYY", Mnc="ZZ", eNodeBId=AA, CellId=BB, CellIndividualOffset=dB10, CellQoffset=dB-10, CellMeasPriority=HIGH_PRIORITY;  {NE Name}

Script for Target Non-Congested cells: MOD EUTRANINTRAFREQNCELL: LocalCellId=XX, Mcc="YYY", Mnc="ZZ", eNodeBId=AA, CellId=BB, CellIndividualOffset=dB-10, CellQoffset=dB10;  {NE NAME}

Fallback Script:

MOD EUTRANINTRAFREQNCELL: LocalCellId=XX, Mcc="YYY", Mnc="ZZ", eNodeBId=AA, CellId=BB, CellIndividualOffset=dB0, CellQoffset=dB0;  {NE NAME}

Here are the result after sharing traffic/offload 4G traffic to surroundings:

Mostly User DL throughput improved in cell level and traffic move to surroundings

Parameter Description:

CellIndividualOffset:

Indicates the cell individual offset for the inter-frequency neighboring cell, which is used in evaluation for handovers. It affects the probability of triggering inter-frequency measurement reports. A larger value of this parameter indicates a higher probability.

Impact on radio Network:

A larger value of this parameter results in a larger probability of triggering measurement reporting and handovers, increasing the number of handovers. A smaller value of this parameter results in the opposite effects. Whether the value of this parameter is too large or too small, the handover success rate decreases

CellQoffset:Indicates the offset for the inter-frequency neighboring cell, which is used in evaluation for cell reselections. A larger value of this parameter results in a lower probability of cell reselections. If this parameter is not set to dB0, it is delivered in SIB5. For details, see 3GPP TS 36.331. If this parameter is set to dB0, it is not delivered in SIB5. In this situation, UEs use 0 dB as the offset for cell reselections.

Impact on radio Network:

A larger value of this parameter leads to a lower probability of reselections to an inter-frequency neighboring cell. A smaller value leads to the opposite effects. Whether the value of this parameter is too large or too small, the access success rate of the inter-frequency neighboring cell decreases

CellMeasPriority:

Indicates the priority of measurement on the inter-frequency neighboring cell. The eNodeB preferentially contains the information about a neighboring cell with this priority set to HIGH_PRIORITY while delivering a measurement configuration

Impact on radio Network:

In the measurement configuration for an inter-frequency handover, the eNodeB includes information about a limited number of inter-frequency neighboring cells whose cell individual offsets (CIOs) are not zero. If this parameter is set to HIGH_PRIORITY and this neighboring cell has a non-zero CIO, it is more likely that this neighboring cell is included in the measurement configuration, thereby increasing the probability of a timely handover to this inter-frequency neighboring cell. If this neighboring cell is eventually not included in the measurement configuration, the UE uses zero as the CIO for this neighboring cell during handover evaluation, resulting in a delayed or premature handover to this neighboring cell.

Thank you for reading this chapter related Throughput improvement by 4G-4G Traffic sharing to solve LTC(low throughput cells) in Huawei 4G LTE Network, hope can helpful and improve your network.

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