CN106211296A - A kind of base station power control method - Google Patents

Abstract

The invention provides a kind of base station power control method, the method includes: when needing to open the little base station that is currently at closed mode, macro base station determines that by the value that each little base station transmitting power being currently at opening is turned down be P_M/M-P_M/ (M+1), and notify to be currently at each little base station of opening, make each little base station that transmitting power is turned down P_M/M-P_M/(M+1)；M is the number of the little base station being currently at opening, P_MFor when the sum launching power of the little base station of top n；And notify that the described little base station being currently at closed mode is opened, to launch power P_M/ (M+1) launches signal.The usefulness of the network of dense deployment can be improved by the program.

Description

A kind of base station power control method

Technical field

The present invention relates to communication technical field, particularly to a kind of base station power control method.

Background technology

Along with the continuous lifting of wireless data traffic, the densification of network design becomes the important of future development Trend.

Network-intensive is disposed and on the one hand can will be promoted the data rate of unit are, but the most but The interference level making whole network promotes rapidly, thus constrains network performance and promote further.Especially Being as network design intensive, energy consumption problem the most progressively highlights.

Summary of the invention

In view of this, the application provides a kind of Poewr control method, to solve the network efficiency of dense deployment Low problem.

For solving above-mentioned technical problem, the technical scheme of the application is achieved in that

A kind of base station power control method, is applied to control on the macro base station of N number of little base station, and the method includes:

When needing to open the little base station that is currently at closed mode, described macro base station determines and will be currently at The value that each little base station transmitting power of opening is turned down is P_M/M-P_M/ (M+1), and notify to be currently at out Open each little base station of state, make each little base station that transmitting power is turned down P_M/M-P_M/(M+1)；M is current place In the number of the little base station of opening, P_MFor when the sum launching power of the little base station of top n；N is for being more than The integer of 1, M is the integer being not more than N more than 0；

And notify that the described little base station being currently at closed mode is opened, to launch power P_M/ (M+1) launches Signal.

From technical scheme above, the application is currently at closed mode needing to open one During little base station, macro base station is according to the number of the little base station being currently at opening, and in whole network The summation launching power of little base station, determines what the transmitting power of each little base station being in opening was turned down Value, and need the transmitting power of the little base station opened, it is possible to increase the usefulness of the network of dense deployment.

Accompanying drawing explanation

Base station power control method flow process signal when Fig. 1 is to need to open little base station in the embodiment of the present application Figure；

Poewr control method schematic flow sheet when Fig. 2 is to need to close little base station in the embodiment of the present application.

Detailed description of the invention

In order to make the purpose of the present invention, technical scheme and advantage clearer, the most also For embodiment, technical scheme is described in detail.

The embodiment of the present application provides a kind of base station power control method, a central controlled district of macro base station Multiple Small Cell Sites can be disposed in territory, passes and be connected between macro base station with each little base station after having, and macro base station can collect The each little base station of middle scheduling controlling.

Controlling as a example by N number of little base station by macro base station below, wherein, N is the integer more than 1.In system Each little base station launch power maximum be preset upper limit launch power threshold, the most each little base station send out Penetrate power not over this threshold value.

In each little base station that macro base station controls, when needing to open a little base station being currently at closed mode Time, if there is currently no the little base station being in opening, i.e. this little base station is first and carries out opening Little base station, then notice needs the described little base station opened to open, and with default upper limit of emission power threshold emissions Signal.

If each little base station that this macro base station controls is not opened, when being i.e. closed, sending out of little base station Penetrating power is 0.

Closing and opening in the embodiment of the present application is all that each little base station is come for its corresponding user terminal Say, when a little base station is closed, refer to that signal is not launched to user terminal in this little base station, also Do not receive the signal that user terminal sends, but can communicate with between macro base station.

See base station power control method stream when Fig. 1, Fig. 1 are to need to open little base station in the embodiment of the present application Journey schematic diagram.Concretely comprise the following steps:

Step 101, when needing to open the little base station that is currently at closed mode, macro base station determine by Being currently at the value that each little base station transmitting power of opening turns down is P_M/M-P_M/(M+1)。

With the little base station that is currently at opening for M in the present embodiment, M+1 little base need to be opened As a example by standing.M is the number of the little base station being currently at opening, P_MFor when the little base station of top n Launch the sum of power, i.e. P_MForN is the integer more than 1, and M is to be not more than N more than 0 Integer.

Macro base station determines that the value by each little base station transmitting power being currently at opening is turned down is $P_M/M-P_M/(M+1)=\frac{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{P}_i}{M}-\frac{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{P}_i}{M+1}.$

Step 102, this macro base station notice is currently at each little base station of opening, makes each little base station to send out Penetrate power and turn down P_M/M-P_M/(M+1)。

After step 101, before performing step 102, described method farther includes:

Traversal is currently at each little base station of opening, determines whether there is current transmitting for arbitrary little base station Performance number is not more than P_M/M-P_MThe little base station of/(M+1)；If it is, notify that this little base station is closed；Otherwise, Notify that transmitting power is turned down P by this little base station_M/M-P_M/(M+1)。

Little base station receive macro base station send transmitting power is turned down P_M/M-P_MDuring the notice of/(M+1), The transmitting power of this little base station is turned down P_M/M-P_M/(M+1)；

Step 103, this macro base station notice is currently at the described little base station of closed mode and opens, to launch power P_M/ (M+1) launches signal.

Little base station receives macro base station and opens and to launch power P_MWhen/(M+1) launches the notice of signal, open Open this base station, and to launch power P_M/ (M+1) launches signal.

After in step 103, macro base station notice is currently at the described little base station unlatching of closed mode, further root The path loss reported according to little base station determines whether to adjust the transmitting power of little base station, and concrete process is as follows:

All little base stations are mutually intercepted after adjusting power, for arbitrary little base station, measure each little base station To the path loss of this little base station, and report macro base station.

Macro base station receive that the new little base station opened reports with path loss between adjacent little base station time, determine this new unlatching Little base station to the minimum path loss PL in the path loss of adjacent little base station_min, work as PL_minNot less than presetting path loss threshold Value PL_thTime, notify that transmitting power is heightened PL by the little base station of this new unlatching_th/PL_min；Otherwise, notify that this is new Transmitting power is turned down PL by the little base station opened_min/PL_th。

When implementing, in addition it is also necessary to if after considering the transmitting power according to the little base station of path loss ratio adjustment, little base Whether the transmitting power stood is between 0 to default upper limit of emission power threshold value, if it is, directly notify little base Stand adjustment；Otherwise, the process responded need to be carried out, specific as follows:

Work as PL_minNot less than presetting path loss threshold value PL_thConstantly, this macro base station determines that the little base station of this new unlatching is sent out Penetrate power and heighten PL_th/PL_minAfterwards, whether the transmitting power of the little base station of this new unlatching is more than PL_thIf, It is to notify that transmitting power is heightened to PL by the little base station of this new unlatching_th；Otherwise, the little base of this new unlatching is notified Stand and transmitting power is heightened PL_th/PL_min；

Work as PL_minLess than PL_thTime, this macro base station determines whether the transmitting power of the little base station of this new unlatching is more than PL_min/PL_th, if it is, notify that transmitting power is turned down PL by the little base station of this new unlatching_min/PL_th；Otherwise, Notify that the little base station of this new unlatching is closed.

See Poewr control method flow process signal when Fig. 2, Fig. 2 are to need to close little base station in the embodiment of the present application Figure.Concretely comprise the following steps:

Step 201, when needing to close the little base station that is currently at opening, this macro base station determine by Being currently at the value that each little base station transmitting power of opening heightens is P_Q/(Q-1)-P_Q/Q。

The present embodiment is opened with current, is i.e. in as a example by the little base station of opening is Q little base station, closes Close one of them little base station.Wherein, Q is the number of the little base station being currently at opening, P_QFor currently The sum launching power of N number of little base station, i.e. P_QForQ is the integer being not more than N more than 0.This is grand Base station determines that the value by each little base station transmitting power being currently at opening is heightened is

$P_M/M-P_M/(M+1)=\frac{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{P}_i}{M}-\frac{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{P}_i}{M+1}.$

Step 202, this macro base station notice be currently at opening and need not close little base station will launch merit Rate heightens P_Q/(Q-1)-P_Q/Q。

Determine that by the value that each little base station transmitting power being currently at opening is heightened be P in step 201_Q/ (Q-1)-P_QDuring/Q, if also needing to determine that power is heightened P by each little base station being in opening_Q/(Q-1) -P_QDuring/Q, if beyond default upper limit of emission power threshold value, concrete processing mode is as follows:

Traversal is currently at each little base station of opening, determines this little base station transmitting power for arbitrary little base station Heighten P_Q/(Q-1)-P_QAfter/Q, whether the transmitting power of this little base station is more than presetting upper limit of emission power threshold Value, if time, notify that transmitting power is heightened default upper limit of emission power threshold value by this little base station；Otherwise, Notify that transmitting power is heightened P by this little base station_Q/(Q-1)-P_Q/Q。

As can be seen here, transmitting power is heightened P_Q/(Q-1)-P_QAfter/Q, launch power and exceed default sending out When penetrating power upper limit threshold value, it is adjusted to transmitting power preset upper limit of emission power threshold value.

Little base station receive macro base station send transmitting power is heightened P_Q/(Q-1)-P_QDuring the notice of/Q, The transmitting power of this little base station is heightened P_Q/(Q-1)-P_Q/Q；

Little base station receives heightening of macro base station transmission and launches power to presetting upper limit of emission power threshold value During notice, the transmitting power of this little base station is heightened default upper limit of emission power threshold value.

Step 203, this macro base station notice needs the little base station closed to close.

When little base station receives the notice closing this little base station that macro base station sends, this little base station is closed.

In sum, the application is when needs are turned on and off a little base station, and macro base station is little to control The transmitting power of base station is adjusted, thus reduces in whole network the interference between base station, and can carry The usefulness of the network of highly dense deployment.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. done, should be included in Within the scope of protection of the invention.

Claims (7)

1. a base station power control method, is applied to control on the macro base station of N number of little base station, and its feature exists In, the method includes:

When needing to open the little base station that is currently at closed mode, described macro base station determines and will be currently at The value that each little base station transmitting power of opening is turned down is P_M/M-P_M/ (M+1), and notify to be currently at out Open each little base station of state, make each little base station that transmitting power is turned down P_M/M-P_M/(M+1)；M is current place In the number of the little base station of opening, P_MFor when the sum launching power of the little base station of top n；N is for being more than The integer of 1, M is the integer being not more than N more than 0；

And notify that the described little base station being currently at closed mode is opened, to launch power P_M/ (M+1) launches Signal.

Method the most according to claim 1, it is characterised in that described macro base station determines and will be currently at The value that each little base station transmitting power of opening is turned down is P_M/M-P_MDuring/(M+1), described method enters one Step includes:

Traversal is currently at each little base station of opening, determines whether there is current transmitting for arbitrary little base station Performance number is not more than P_M/M-P_MThe little base station of/(M+1)；If it is, notify that this little base station is closed；Otherwise, Notify that transmitting power is turned down P by this little base station_M/M-P_M/(M+1)。

Method the most according to claim 1, it is characterised in that described notice is currently at closed mode Described little base station open after, described method farther includes:

Described macro base station receive that the new little base station opened reports with path loss between adjacent little base station time, determine that this is new The little base station opened is to the minimum path loss PL in the path loss of adjacent little base station_min, work as PL_minNot less than presetting road Damage threshold value PL_thTime, notify that transmitting power is heightened PL by the little base station of this new unlatching_th/PL_min；Otherwise, notice Transmitting power is turned down PL by the little base station of this new unlatching_min/PL_th。

Method the most according to claim 3, it is characterised in that

Described work as PL_minNot less than presetting path loss threshold value PL_thConstantly, described method farther includes:

Determine that the little base station transmitting power of this new unlatching heightens PL_th/PL_minAfterwards, the little base station of this new unlatching Whether launch power more than PL_th, if it is, notify that transmitting power is heightened to PL by the little base station of this new unlatching_th； Otherwise, notify that transmitting power is heightened PL by the little base station of this new unlatching_th/PL_min；

Work as PL_minLess than PL_thTime, described method farther includes:

Determine that whether the transmitting power of little base station of this new unlatching is more than PL_min/PL_th, if it is, notify that this is new Transmitting power is turned down PL by the little base station opened_min/PL_th；Otherwise, notify that the little base station of this new unlatching is closed.

Method the most according to claim 1, it is characterised in that described method farther includes:

When needing to open the little base station that is currently at closed mode, it is in unlatching shape if there is currently no The little base station of state, then notice needs the described little base station opened to open, and with default upper limit of emission power threshold value Launch signal.

6. according to the method described in claim 1-5 any one, it is characterised in that described method is further Including:

When needing to close the little base station that is currently at opening, determine and will be currently at opening The value that each little base station transmitting power is heightened is P_Q/(Q-1)-P_Q/ Q, and notify to be currently at opening and not Need the little base station closed that transmitting power is heightened P_Q/(Q-1)-P_Q/Q；Wherein, Q is for being currently at unlatching The number of the little base station of state, P_QFor when the sum launching power of the little base station of top n, Q is little more than 0 Integer in N；

And notify to need the little base station closed to close.

Method the most according to claim 6, it is characterised in that described determine and will be currently at unlatching shape The value that each little base station transmitting power of state is heightened is P_Q/(Q-1)-P_QDuring/Q, described method farther includes:

Traversal is currently at each little base station of opening, determines this little base station transmitting power for arbitrary little base station Heighten P_Q/(Q-1)-P_QAfter/Q, whether the transmitting power of this little base station is more than presetting upper limit of emission power threshold Value, if time, notify that transmitting power is heightened default upper limit of emission power threshold value by this little base station；Otherwise, Notify that transmitting power is heightened P by this little base station_Q/(Q-1)-P_Q/Q。