Uplink power control method and apparatus thereof

Patent metadata

Field	Value
Publication number	US-2016150488-A1
Application number	US-201615011230-A
Country	US
Kind code	A1
Filing date	Jan 29, 2016
Priority date	Aug 1, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

Embodiments of the disclosure provide an uplink power control method and an apparatus thereof. The method includes: optimizing uplink power control parameters of the multiple cells according to a KPI model, where the KPI model is used to indicate a mapping relationship between the uplink power control parameters of the multiple cells and at least one KPI of a network on which the multiple cells are located; and performing uplink power control on user equipment in the multiple cells according to the uplink power control parameters of the multiple cells. In the embodiments of the disclosure, by considering impact of uplink power control parameters of multiple cells on a KPI of a network on which the multiple cells are located, uplink power control parameters that are more optimized from the perspective of global performance of the network are obtained, thereby improving overall performance of the network.

First claim

What is claimed is:

1 . An uplink power control method, comprising:
optimizing uplink power control parameters of multiple cells according to a key performance indicator (KPI) model, wherein the KPI model is used to indicate a mapping relationship between the uplink power control parameters of the multiple cells and at least one KPI of a network on which the multiple cells are located; and performing uplink power control on user equipment in the multiple cells according to the uplink power control parameters of the multiple cells.

2 . The uplink power control method according to claim 1 , wherein the optimizing uplink power control parameters of the multiple cells according to a KPI model, comprises:
creating a first optimization model according to the KPI model, wherein the first optimization model uses the uplink power control parameters of the multiple cells as optimization variables, and uses an optimal solution of the at least one KPI within a value range of the uplink power control parameters as an optimization target; and solving the first optimization model, to acquire uplink power control parameters of the multiple cells.

3 . The uplink power control method according to claim 2 , wherein the at least one KPI is multiple KPIs, and the creating a first optimization model according to the KPI model comprises:
determining the uplink power control parameters of the multiple cells as optimization variables of the first optimization model; and determining a minimum weighted value of the multiple KPIs as an optimization target of the first optimization model.

4 . The uplink power control method according to claim 2 , wherein the solving the first optimization model comprises:
mapping the optimization variables of the first optimization model from a discrete parameter space to a continuous parameter space, and converting a target function of the first optimization model into a continuous and smooth function, to acquire a second optimization model after conversion; determining a solution of the optimization variables in the continuous parameter space according to the second optimization model; and mapping the solution of the optimization variables in the continuous parameter space back to the discrete parameter space, to determine a solution of the optimization variables in the discrete parameter space.

5 . The uplink power control method according to claim 1 , wherein the uplink power control parameters of the multiple cells comprise an uplink power control reference value of each cell of the multiple cells, and an uplink path loss compensation factor of each cell.

6 . The uplink power control method according to claim 1 , wherein the at least one KPI of the network comprises at least one of the following:
uplink load, a call drop and block ratio (CDBR), and an average uplink signal to interference plus noise ratio.

7 . An uplink power control apparatus, comprising:
a processor, configured to:
optimize uplink power control parameters of multiple cells according to a key performance indicator (KPI) model, wherein the KPI model is used to indicate a mapping relationship between the uplink power control parameters of the multiple cells and at least one KPI of a network on which the multiple cells are located, and
perform uplink power control on user equipment in the multiple cells according to the uplink power control parameters of the multiple cells that are acquired by the processor;
a memory, configured to store an instruction that is required by the processor during execution.

8 . The uplink power control apparatus according to claim 7 , wherein the processor is further configured to:
create a first optimization model according to the KPI model, wherein the first optimization model uses the uplink power control parameters of the multiple cells as optimization variables and uses an optimal solution of the at least one KPI within a value range of the uplink power control parameters as an optimization target; and solve the first optimization model, to acquire uplink power control parameters of the multiple cells.

9 . The uplink power control apparatus according to claim 7 , wherein the at least one KPI is multiple KPIs, and the processor is further configured to:
determine the uplink power control parameters of the multiple cells as optimization variables of the first optimization model, and determine a minimum weighted value of the multiple KPIs as an optimization target of the first optimization model.

10 . The uplink power control apparatus according to claim 8 , wherein the processor is further configured to:
map the optimization variables of the first optimization model from a discrete parameter space to a continuous parameter space, and convert a target function of the first optimization model into a continuous and smooth function, to acquire a second optimization model after conversion; determine a solution of the optimization variables in the continuous parameter space according to the second optimization model; and map the solution of the optimization variables in the continuous parameter space back to the discrete parameter space, to determine a solution of the optimization variables in the discrete parameter space.

11 . The uplink power control apparatus according to claim 7 , wherein the uplink power control parameters of the multiple cells comprise an uplink power control reference value of each cell of the multiple cells, and an uplink path loss compensation factor of each cell.

12 . The uplink power control apparatus according to claim 7 , wherein the at least one KPI of the network comprises at least one of the following:
uplink load, a call drop and block ratio (CDBR), and an average uplink signal to interference plus noise ratio.

Assignees

• Huawei Tech Co Ltd

Inventors

• Luo Zezhou
• Gilimyanov Ruslan
• Zhuang Hongcheng

Classifications

• H04B17/391 Primary

  Modelling the propagation channel · CPC title

• H04W52/225

  Calculation of statistics, e.g. average or variance · CPC title

• H04W52/241

  taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo · CPC title

• H04W52/265

  taking into account the quality of service QoS · CPC title

• H04W52/244

  Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI] · CPC title