CN102761949B - Power adjusting method and device, central node controller and access network node - Google Patents

Abstract

The embodiment of the invention provides a power adjusting method and device, a central node controller and an access network node. The power adjusting method comprises the following steps of: receiving a signaling transmitted by a neighbor-cell access network node by a network side node; and when the network side node searches second UE (User Equipment) sharing the same frequency band with first UE from a domain adjacent to a domain where the first UE is positioned and no free idle frequency band exists in a cell where the second UE is positioned, determining a power adjusting parameter according to the minimized speed which can be accepted by the second UE and adjusting the transmitting power of the downlink of the second UE by the cell where the second UE is positioned according to the determined power adjusting parameter, the priority of the first UE and the pre-obtained priority of the second UE by the network side node. According to the power adjusting method and device disclosed by the invention, the transmitting power of an interference source is adjusted according to the power adjusting parameter and the priority of each UE, a power adjusting value is quantitatively given out and the transmitting power of the interference source is prevented from being blindly adjusted, and thus the accuracy of ICIC (Inter Cell Interference Coordination) operation can be improved and further the frequency spectrum efficiency of cell-edge users can be increased and the performance of the system are improved.

Description

Power regulating method, device, central node controller and access network node

Technical field

The embodiment of the present invention relates to communication technical field, particularly relates to a kind of power regulating method, device, central node controller and access network node.

Background technology

Strengthening smooth evolution (the Long Term Evolution Advanced of Long Term Evolution; Hereinafter referred to as: LTE-A) in system, introduce low power nodes.Low power nodes and macrocell together constitute heterogeneous network.

It is low and dispose the advantage such as flexible that low power nodes has cost, and can bring the lifting of power system capacity and edge user throughput.But the introducing of low power nodes makes to have occurred a lot of low power cell in macrocell simultaneously, when there is no low power cell, subscriber equipment (the User Equipment in macrocell; Hereinafter referred to as: UE) use orthogonal running time-frequency resource.And at the edge of low power cell, macro base station should be selected to have selected low power nodes now as the UE of serving BS, this means that the nearer UE of original macrocell middle distance may be operated in same frequency range, thus make the presence of intercell interference in heterogeneous network more fierce, especially descending interference is particularly outstanding, reduce the performance boost that heterogeneous network brings, constrain the use of low power nodes.

Presence of intercell interference compensation technique mainly comprises: presence of intercell interference randomized technique, inter-cell interference cancellation technology and Inter-Cell Interference Coordination (Inter Cell Interference Coordination; Hereinafter referred to as: ICIC).Wherein, ICIC can, in minizone reasonable distribution resource, make neighbor cell used resource orthogonal as far as possible, or reduces the transmitting power of interference source, thus the interference of minizone is reduced.

But reduce the ICIC scheme of the transmitting power of interference source to the adjustment of transmitting power comparatively blindly, the accuracy of ICIC operation is lower.

Summary of the invention

The embodiment of the present invention provides a kind of power regulating method, device, central node controller and access network node, to realize, according to power adjustment parameters adjustment transmitting power, improving the accuracy of ICIC operation.

The embodiment of the present invention provides a kind of power regulating method, comprising:

Network side node receives the signaling that adjacent area access network node sends, and described signaling carries the frequency range that relative arrowband transmitted power in adjacent area is greater than the priority of the first user equipment of predetermined threshold value, described first user equipment region and use;

When described network side node finds the second subscriber equipment with described first user equipment use similar frequency bands in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell without idle frequency range time, described network side node is according to described second subscriber equipment receptible minimum speed limit determination power adjustment parameters, and according to the power adjustment parameters determined, the priority of described first user equipment and described second community, subscriber equipment place of priority adjustment of the second subscriber equipment that obtains in advance are to the down transmitting power of described second subscriber equipment.

The embodiment of the present invention also provides a kind of power adjustment apparatus, comprising:

Receiver module, for receiving the signaling that adjacent area access network node sends, described signaling carries the frequency range that relative arrowband transmitted power in adjacent area is greater than the priority of the first user equipment of predetermined threshold value, described first user equipment region and use;

Determination module, for finding the second subscriber equipment with described first user equipment use similar frequency bands when described power adjustment apparatus in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell without idle frequency range time, according to described second subscriber equipment receptible minimum speed limit determination power adjustment parameters;

Adjusting module, the priority of the first user equipment received for the power adjustment parameters determined according to described determination module, described receiver module and described second community, subscriber equipment place of priority adjustment of the second subscriber equipment of obtaining in advance are to the down transmitting power of described second subscriber equipment.

The embodiment of the present invention also provides a kind of central node controller, comprises power adjustment apparatus as above.

The embodiment of the present invention also provides a kind of power adjustment apparatus, comprising:

Signaling receiver module, for receiving the signaling that adjacent area access network node sends, described signaling carries the frequency range that relative arrowband transmitted power in adjacent area is greater than the priority of the first user equipment of predetermined threshold value, described first user equipment region and use;

Parameter determination module, for finding the second subscriber equipment with described first user equipment use similar frequency bands when described power adjustment apparatus in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell without idle frequency range time, according to described second subscriber equipment receptible minimum speed limit determination power adjustment parameters;

Power regulation module, the priority of the first user equipment received for the power adjustment parameters determined according to described parameter determination module, described signaling receiver module and described second community, subscriber equipment place of priority adjustment of the second subscriber equipment of obtaining in advance are to the down transmitting power of described second subscriber equipment.

The embodiment of the present invention also provides a kind of access network node, comprises power adjustment apparatus as above.

Pass through the embodiment of the present invention, network side node is in the adjacent area of first user equipment region, find the second subscriber equipment with first user equipment use similar frequency bands, and second subscriber equipment institute in the cell without idle frequency range time, this network side node can according to this second subscriber equipment receptible minimum speed limit determination power adjustment parameters, and according to the power adjustment parameters determined, the priority of first user equipment and the priority of the second subscriber equipment obtained in advance adjust the second community, subscriber equipment place to the down transmitting power of the second subscriber equipment.The embodiment of the present invention is according to the transmitting power of the priority adjustment interference source of power adjustment parameters and subscriber equipment, give power adjustment quantitatively, avoid the transmitting power adjusting interference source blindly, thus the accuracy of ICIC operation can be improved, and then the spectrum efficiency of edge customer can be promoted, improve systematic function.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the flow chart of a power regulating method of the present invention embodiment;

Fig. 2 is the schematic diagram of a Region dividing of the present invention embodiment;

Fig. 3 is the flow chart of another embodiment of power regulating method of the present invention;

Fig. 4 is the structural representation of a power adjustment apparatus of the present invention embodiment;

Fig. 5 is the structural representation of another embodiment of power adjustment apparatus of the present invention;

Fig. 6 is the structural representation of another embodiment of power adjustment apparatus of the present invention;

Fig. 7 is the structural representation of another embodiment of power adjustment apparatus of the present invention.

Embodiment

For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.

Fig. 1 is the flow chart of a power regulating method of the present invention embodiment, and as shown in Figure 1, this power regulating method can comprise:

101, network side node receives the signaling that adjacent area access network node sends, and wherein, this signaling carries transmitted power (Relative Narrowband Transmit Power in relative arrowband in adjacent area; Hereinafter referred to as: frequency range RNTP) being greater than the priority of a UE of predetermined threshold value, a UE region and use.

102, when network side node finds the 2nd UE using similar frequency bands with a UE in the adjacent area of a UE region, and the 2nd UE institute in the cell without idle frequency range time, network side node according to the 2nd UE receptible minimum speed limit determination power adjustment parameters, and according to the priority of the power adjustment parameters determined, a UE and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance to the down transmitting power of the 2nd UE.

In above-described embodiment, network side node finds the 2nd UE using similar frequency bands with a UE in the adjacent area of a UE region, and the 2nd UE institute in the cell without idle frequency range time, this network side node can according to the 2nd UE receptible minimum speed limit determination power adjustment parameters, and according to the priority of the power adjustment parameters determined, a UE and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance to the down transmitting power of the 2nd UE.The present embodiment is according to the transmitting power of the priority adjustment interference source of power adjustment parameters and UE, give power adjustment quantitatively, avoid the transmitting power adjusting interference source blindly, thus the accuracy of ICIC operation can be improved, and then the spectrum efficiency of edge customer can be promoted, improve systematic function.

Further, in the present invention embodiment illustrated in fig. 1 101, adjacent area access network node can also carry adjacent area access network node to the down transmitting power of a UE, adjacent area access network node to the large scale fading of a UE, the bit energy of a UE current business and the ratio of suffered interference power to the signaling that network side node sends.Wherein, above-mentioned signaling can be overload instruction (Load Indicator; Hereinafter referred to as: LI) or radio resource state (Radio Resource Status; Hereinafter referred to as: RRS) signaling.

During the present invention is embodiment illustrated in fig. 1, when network side node finds the 2nd UE using similar frequency bands with a UE in the adjacent area of a UE region, and the 2nd UE institute in the cell still available free frequency range time, the 2nd UE can be switched to above-mentioned idle frequency range by network side node.

In a kind of implementation that the present invention is embodiment illustrated in fig. 1, network side node can be the serving access network node of the second community, UE place, the serving access network node at the 2nd community, UE place can be macro base station, and can be also low power nodes, the present embodiment be not construed as limiting this.At this moment, 102, according to the priority of the power adjustment parameters determined, a UE and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance to the down transmitting power of the 2nd UE can be: when priority higher than the 2nd UE obtained in advance of the priority of a UE, the serving access network node at the 2nd community, UE place according to the power adjustment parameters determined, can adjust the serving access network node of the 2nd community, UE place to the down transmitting power of the 2nd UE.Suppose that the power adjustment parameters determined is α _h, the transmitting power of the serving access network node of the 2nd community, UE place is P ₂, then according to power adjustment parameters, adjusting this serving access network node to the down transmitting power of the 2nd UE can be: the transmitting power of the serving access network node of the 2nd community, UE place is reduced to (1-α _h) P ₂; Wherein, 0 < α _h< 1, and α _hbe not less than the minimum power adjustment parameter making the edge throughput of the 2nd community, UE place have postiive gain.

In this implementation, the 2nd UE is switched to above-mentioned idle frequency range and can is by network side node: the 2nd UE is switched to idle frequency range by the serving access network node of above-mentioned 2nd community, UE place.

In the another kind of implementation that the present invention is embodiment illustrated in fig. 1, network side node can centered by Node Controller, at this moment, 102, according to the power adjustment parameters determined, the priority of the one UE and priority adjustment the 2nd community, UE place of the 2nd UE obtained in advance to the down transmitting power of the 2nd UE can be: when priority higher than the 2nd UE obtained in advance of the priority of a UE, the power adjustment parameters determined is sent to the serving access network node of the 2nd community, UE place by central node controller, for the serving access network node of the 2nd community, UE place according to this power adjustment parameters, adjust the serving access network node of the 2nd community, UE place to the down transmitting power of the 2nd UE, or, the power adjustment parameters determined is sent to the serving access network node of the 2nd community, UE place by central node controller, for the serving access network node of the 2nd community, UE place when priority higher than the 2nd UE of the priority of a UE, according to this power adjustment parameters, the serving access network node of adjustment the 2nd community, UE place is to the down transmitting power of the 2nd UE.Suppose that the power adjustment parameters determined is α _h, the transmitting power of the serving access network node of the 2nd community, UE place is P ₂then according to power adjustment parameters, adjusting this serving access network node to the down transmitting power of the 2nd UE can be: the down transmitting power of serving access network node to the 2nd UE of the 2nd community, UE place is reduced to (1-α by the serving access network node of the 2nd community, UE place _h) P ₂; Wherein, 0 < α _h< 1, and α _hbe not less than the minimum power adjustment parameter making the edge throughput of the 2nd community, UE place have postiive gain.

In this implementation, the 2nd UE is switched to idle frequency range and can is by network side node: central node controller notifies that the 2nd UE is switched to above-mentioned idle frequency range by the serving access network node of the 2nd community, UE place.

Based in the ICIC technology of Region Segmentation, according to signal strength signal intensity and disturbed condition, can be several regions by the overlapping edge punishment between macro base station or low power nodes, Fig. 2 is the schematic diagram of a Region dividing of the present invention embodiment, Fig. 2 is described to be divided into three regions, as being numbered a in Fig. 2, the region of b and c, in the embodiment of the present invention, the numbering in region residing for the position of UE and this UE can be determined by location technology, when triggering RNTP and sending, in LI or the RRS signaling that Serving cell sends to adjacent cell, carry the information such as the priority being disturbed UE.In Fig. 2, macro base station is evolution base station (evolved NodeB; Hereinafter referred to as: eNB), comprise eNB1 and eNB2; In addition, in Fig. 2, also comprise three user equipment (UE)s 1, UE2 and UE3, and a low power nodes.

Fig. 3 is the flow chart of another embodiment of power regulating method of the present invention, and the power regulating method that the present embodiment composition graphs 2 pairs of embodiment of the present invention propose is described.

As shown in Figure 3, this power regulating method can comprise:

301, network side node receives the signaling that adjacent area access network node sends.

In the present embodiment, this signaling is that adjacent area access network node is determined to have in adjacent area after RNTP is greater than the UE of predetermined threshold value, sends to network side node; That is, adjacent area access network node sends above-mentioned signaling to network side node after finding to have in adjacent area and being disturbed larger UE.In the present embodiment, suppose that being disturbed larger UE is UE1.

Above-mentioned signaling can be LI or RRS signaling, and this signaling carries frequency range that the priority of UE1, UE1 region and UE1 use, adjacent area access network node to the down transmitting power of a UE, adjacent area access network node to the large scale fading of a UE, the bit energy of a UE current business and the ratio of suffered interference power.

Access network node in the present embodiment can be the equipment such as macro base station, Home eNodeB or low power nodes, and the concrete form of the present embodiment to access network node is not construed as limiting.

302, network side node, according to Region Segmentation, searches the UE using similar frequency bands with UE1 in the adjacent area of UE1 region; If found, then perform 303; If do not find the UE using similar frequency bands with UE1 in the adjacent area of UE1 region, then terminate this flow process.

In the present embodiment, that supposes to find in the adjacent area of UE1 region uses the UE of similar frequency bands for UE2 with UE1; That is, UE1 is owing to being operated in same frequency range with UE2 close together and receiving the descending interference of low power nodes, as shown in the dotted line in Fig. 2 between low power nodes and UE1.Wherein, low power nodes is the serving access network node of community, UE2 place.

303, judge UE2 institute whether available free frequency range in the cell.If had, then perform 304; If UE2 institute in the cell without idle frequency range, then performs 305.

304, UE2 is switched to idle frequency range by network side node.

305, network side node determination power adjustment parameters, and judge whether power adjustment parameters meets predetermined condition; If met, then perform 306; If power adjustment parameters does not meet predetermined condition, then terminate this flow process.

In the present embodiment, suppose that power adjustment parameters is α _h, then α _hthe predetermined condition that must meet is: 0 < α _h< 1, and α _hbe not less than the minimum power adjustment parameter making the edge throughput of community, UE2 place have postiive gain, in the present embodiment, suppose that this minimum power adjustment parameter is α _l.

Introduce α below _hwith α _lderivation.

Parameter illustrates:

G ₁: the decay of eNB1 to UE1;

G ₂: low power nodes is to the decay of UE2;

low power nodes is to the decay of UE1;

the decay of eNB1 to UE2;

I ₁: the interference from low power nodes that UE1 is subject to;

I ₂: the interference from eNB1 that UE2 is subject to;

P ₁: eNB1 is to the transmitting power of UE1;

P ₂: low power nodes is to the transmitting power of UE2;

N ₁: what UE1 was subject to removes I ₂all interference in addition;

N ₂: what UE2 was subject to removes I ₁all interference in addition;

R ₁: the present rate of UE1;

the receptible minimum-rate of UE1;

R ₂: the present rate of UE2;

the receptible minimum-rate of UE2;

γ ₁: the bit energy of UE1 current business and the ratio of suffered interfering energy;

γ ₂: the bit energy of UE2 current business and the ratio of suffered interfering energy.

In the present embodiment, the bit energy of the current business of UE1 and UE2 can be expressed as with the ratio of suffered interfering energy:

${\mathrm{\&gamma;}}_1=\frac{P_1\&CenterDot;g_1}{R_1\&CenterDot;(N_1+P_2\&CenterDot;g_2^{*})}---\left(1\right)$

${\mathrm{\&gamma;}}_2=\frac{P_2\&CenterDot;g_2}{R_2\&CenterDot;(N_1+P_1\&CenterDot;g_1^{*})}---\left(2\right)$

Can be obtained by formula (1) and formula (2):

$R_1=\frac{P_1\&CenterDot;g_1/{\mathrm{\&gamma;}}_1}{N_1+P_2\&CenterDot;g_2^{*}}---\left(3\right)$

$R_2=\frac{P_2\&CenterDot;g_2/{\mathrm{\&gamma;}}_2}{N_2+P_1\&CenterDot;g_1^{*}}---\left(4\right)$

Work as P ₂drop to (1-α) P ₂time,

$R_1^{*}=\frac{P_1\&CenterDot;g_1/{\mathrm{\&gamma;}}_1}{N_1+(1-\mathrm{\&alpha;})P_2\&CenterDot;g_2^{*}}---\left(5\right)$

$R_2^{*}=\frac{(1-\mathrm{\&alpha;}){\&CenterDot;P}_2\&CenterDot;g_2/{\mathrm{\&gamma;}}_2}{N_2+P_1\&CenterDot;g_1^{*}}---\left(6\right)$

Through type (3) ~ formula (6) can obtain, and works as P ₂drop to (1-α) P ₂time rate gain Δ R be:

$\mathrm{\&Delta;R}=(R_1^{*}+R_2^{*})-(R_1+R_2)=\mathrm{\&alpha;}\&CenterDot;[\frac{P_1\&CenterDot;g_1^{*}\&CenterDot;R_1}{N_1+(1-\mathrm{\&alpha;})\&CenterDot;P_1\&CenterDot;g_1^{*}}-R_2]---\left(7\right)$

Due to after reduction transmitting power, still want guaranteed rate gain to be postiive gain, namely need Δ R > 0; That is, reduce transmitting power and systematic function can not be made to reduce, by Δ R > 0, can derive

$\mathrm{\&alpha;}>1-\frac{(N_2+P_1\&CenterDot;g_1^{*})\&CenterDot;P_1\&CenterDot;g_1/{\mathrm{\&gamma;}}_1}{(N_1+P_2\&CenterDot;g_2^{*})\&CenterDot;P_2\&CenterDot;g_2/{\mathrm{\&gamma;}}_2}-\frac{N_1}{P_2\&CenterDot;g_2^{*}}={\mathrm{\&alpha;}}_L---\left(8\right)$

Continue derive α below _h.

Make Δ R ' (α)=0,2 extreme points can be obtained:

${\mathrm{\&alpha;}}_1=\frac{N_1}{P_2\&CenterDot;g_2^{*}}+1-\sqrt{\frac{R_1}{R_2}\&CenterDot;(\frac{N_1}{P_2\&CenterDot;g_2^{*}}+1)}---\left(9\right)$

${\mathrm{\&alpha;}}_2=\frac{N_1}{P_2\&CenterDot;g_2^{*}}+1+\sqrt{\frac{R_1}{R_2}\&CenterDot;(\frac{N_1}{P_2\&CenterDot;g_2^{*}}+1)}---\left(10\right)$

$\mathrm{\&Delta;}{R}^{\&prime;\&prime;}\left(\mathrm{\&alpha;}\right)=2\&CenterDot;R_2\&CenterDot;(\frac{N_1}{P_2\&CenterDot;g_2^{*}}+1-\mathrm{\&alpha;})---\left(11\right)$

Formula (9) and formula (10) are substituted into formula (11) Δ R " (α can be obtained ₁) > 0, Δ R " (α ₂) < 0.But can α be found out by formula (10) ₂> 1, with 0 < α < 1 contradiction, therefore Δ R is at [α _l, 1) interval in only may there is minimum point, and without maximum point.In addition, can find out as Δ R > 0 from formula (7), Δ R increases with α and increases progressively.Therefore Δ R is at [α _l, 1) and maximum in interval is at end points place.And α=1 does not meet actual conditions, therefore according to the receptible minimum-rate of UE2, the higher limit α of α can be calculated _h, namely

$\frac{(1-\mathrm{\&alpha;})\&CenterDot;P_2\&CenterDot;g_2/{\mathrm{\&gamma;}}_2}{N_2+P_1\&CenterDot;g_1^{*}}\&GreaterEqual;R_{\min }^{\left(2\right)}---\left(12\right)$

Through type (12), can obtain

$\mathrm{\&alpha;}\&le;1-\frac{(N_2+P_1\&CenterDot;g_1^{*})\&CenterDot;R_{\min }^{\left(2\right)}}{P_2\&CenterDot;g_2/{\mathrm{\&gamma;}}_2}{=\mathrm{\&alpha;}}_H---\left(13\right)$

By above analysis, as satisfied 0 < α _h< 1, and be not less than α _ltime, the transmitting power of low power nodes is reduced to (1-α _h) P ₂, both ensure that the business demand of UE2, and also improved the edge throughput of community simultaneously, improve systematic function.

306, network side node adjusts community, UE2 place to the down transmitting power of UE2 according to the priority of UE1, the priority of UE2 and above-mentioned power adjustment parameters.

In a kind of implementation of the present embodiment, above-mentioned network side node can be the serving access network node of community, UE2 place, and in this implementation, the serving access network node of community, UE2 place is low power nodes, as shown in Figure 2.

In this implementation, 301, add the distributed intelligence of UE in the signaling that adjacent area access network node sends to low power nodes, after receiving this signaling like this, low power nodes according to the distributed intelligence of the UE1 carried in this signaling, can perform 302 ~ 306.

For LI signaling or RRS signaling, after increasing the distributed intelligence of UE, LI signaling can be as shown in table 1, and RRS signaling can be as shown in table 2.

Table 1

Table 2

Particularly, 306, network side node according to the priority of UE1, the priority of UE2 and above-mentioned power adjustment parameters adjustment community, UE2 place to the down transmitting power of UE2 can be: when priority higher than UE2 of the priority of UE1, self is reduced to (1-α to the down transmitting power of UE2 by low power nodes _h) P ₂.

In addition, when priority not higher than UE2 of the priority of UE1, low power nodes does not adjust self down transmitting power to UE2.

In the another kind of implementation of the present embodiment, above-mentioned network side node can centered by Node Controller (Center Controller), in this implementation, in descending ICIC, introduce above-mentioned central node controller process presence of intercell interference information.This central node controller can the distributed intelligence of each community UE that sends of eNB in receiving system and low power nodes, and the distributed intelligence of above-mentioned UE can use following parametric description:

(1) coordinate of UE, or region (being defined by Region Segmentation);

(2) speed that UE is current carried and receptible minimum-rate;

(3) service quality (the Quality of Service required by UE current business; Hereinafter referred to as: QoS), comprising: the error rate (Bit Error Rate; Hereinafter referred to as: BER), BLER, Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio; Hereinafter referred to as: SINR) etc.;

(4) power that distributes of UE and received total interference.

In this implementation, 301, after central node controller receives the above-mentioned information that adjacent area access network node sent by signaling, this central node controller according to the information received, can perform 302 ~ 306.

Particularly, 304, UE2 is switched to idle frequency range and can is by network side node: UE2 is switched to idle frequency range by the serving access network node (low power nodes) of central node controller notice community, UE2 place.

306, network side node according to the priority of UE1, the priority of UE2 and above-mentioned power adjustment parameters adjustment community, UE2 place to the down transmitting power of UE2 can be: when priority higher than UE2 of the priority of UE1, above-mentioned power adjustment parameters is sent to low power nodes by central node controller, for this low power nodes according to this power adjustment parameters, adjust self down transmitting power to UE2; When priority not higher than UE2 of the priority of UE1, central node controller does not send above-mentioned power adjustment parameters to low power nodes.Or,

Above-mentioned power adjustment parameters is sent to low power nodes by central node controller, for this low power nodes when priority higher than UE2 of the priority of UE1, according to this power adjustment parameters, adjusts the down transmitting power of this low power nodes to UE2; When priority not higher than UE2 of the priority of UE1, this low power nodes can not adjust the down transmitting power of this low power nodes to UE2.

In this implementation, the down transmitting power of this low power nodes to UE2 can be reduced to (1-α by low power nodes equally _h) P ₂.

Above-described embodiment is after determining that power adjustment parameters meets predetermined condition, just determine the transmitting power needing to adjust interference source, avoid and reduce transmitting power blindly, and quantitatively give power adjustment, thus accuracy and the systematic function of ICIC operation can be improved.

Shown in certain Fig. 2 of the present invention, scene is only a kind of example of the present invention's application scenarios embodiment illustrated in fig. 3, does not form the present invention's restriction embodiment illustrated in fig. 3.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

Fig. 4 is the structural representation of a power adjustment apparatus of the present invention embodiment, power adjustment apparatus in the present embodiment can as central node controller, or a part for central node controller realizes the present invention's flow process embodiment illustrated in fig. 1, as shown in Figure 4, this power adjustment apparatus can comprise:

Receiver module 41, for receiving the signaling that adjacent area access network node sends, this signaling carries the frequency range that RNTP in adjacent area is greater than the priority of a UE of predetermined threshold value, a UE region and use;

Determination module 42, for finding when above-mentioned power adjustment apparatus the 2nd UE using similar frequency bands with a UE in the adjacent area of a UE region, and the 2nd UE institute in the cell without idle frequency range time, according to the 2nd UE receptible minimum speed limit determination power adjustment parameters;

Adjusting module 43, the priority of the UE that power adjustment parameters, receiver module 41 for determining according to determination module 42 receive and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance are to the down transmitting power of the 2nd UE.

In above-described embodiment, when finding the 2nd UE using similar frequency bands with a UE in the adjacent area in a UE region, and the 2nd UE institute in the cell without idle frequency range time, determination module 42 can according to the 2nd UE receptible minimum speed limit determination power adjustment parameters, then adjusting module 43 determine according to determination module 42 power adjustment parameters, the priority of a UE and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance be to the down transmitting power of the 2nd UE.Above-mentioned power adjustment apparatus can according to the transmitting power of the priority adjustment interference source of power adjustment parameters and UE, give power adjustment quantitatively, avoid the transmitting power adjusting interference source blindly, thus the accuracy of ICIC operation can be improved, and then the spectrum efficiency of edge customer can be promoted, improve systematic function.

Fig. 5 is the structural representation of another embodiment of power adjustment apparatus of the present invention, and the power adjustment apparatus in the present embodiment can as central node controller, or a part for central node controller realizes Fig. 1 of the present invention and flow process embodiment illustrated in fig. 3.Compared with the power adjustment apparatus shown in Fig. 4, difference is, the power adjustment apparatus shown in Fig. 5 can also comprise:

Handover module 44, for finding the 2nd UE using similar frequency bands with a UE when power adjustment apparatus in the adjacent area of a UE region, and the 2nd UE in the cell still available free frequency range time, the 2nd UE is switched to above-mentioned idle frequency range.Particularly, handover module 44 can notify that the 2nd UE is switched to above-mentioned idle frequency range by the serving access network node of the 2nd community, UE place.

In the present embodiment, adjusting module 43 can work as a UE the priority of priority higher than the 2nd UE obtained in advance time, the power adjustment parameters that determination module 42 is determined is sent to the serving access network node of the 2nd community, UE place, for the serving access network node of the 2nd community, UE place according to above-mentioned power adjustment parameters, adjust descending the power of serving access network node to the 2nd UE of the 2nd community, UE place; Or,

The power adjustment parameters that determination module 42 is determined can be sent to the serving access network node of the 2nd community, UE place by adjusting module 43, for the serving access network node of the 2nd community, UE place when priority higher than the 2nd UE of the priority of a UE, according to above-mentioned power adjustment parameters, adjust the serving access network node of the 2nd community, UE place to the down transmitting power of the 2nd UE.

Above-mentioned power adjustment apparatus can according to the transmitting power of the priority adjustment interference source of power adjustment parameters and subscriber equipment, give power adjustment quantitatively, avoid the transmitting power adjusting interference source blindly, thus the accuracy of ICIC operation can be improved, and then the spectrum efficiency of edge customer can be promoted, improve systematic function.

Fig. 6 is the structural representation of another embodiment of power adjustment apparatus of the present invention, and the power adjustment apparatus in the present embodiment can realize the present invention's flow process embodiment illustrated in fig. 1 as a part for access network node or access network node.As shown in Figure 6, this power adjustment apparatus can comprise:

Signaling receiver module 61, for receiving the signaling that adjacent area access network node sends, this signaling carries the frequency range that RNTP in adjacent area is greater than the priority of a UE of predetermined threshold value, a UE region and use;

Parameter determination module 62, for finding when power adjustment apparatus the 2nd UE using similar frequency bands with a UE in the adjacent area of a UE region, and the 2nd UE institute in the cell without idle frequency range time, according to the 2nd UE receptible minimum speed limit determination power adjustment parameters;

Power regulation module 63, the priority of the UE that power adjustment parameters, signaling receiver module 61 for determining according to parameter determination module 62 receive and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance are to the down transmitting power of the 2nd UE.

In above-described embodiment, when finding the 2nd UE using similar frequency bands with a UE in the adjacent area in a UE region, and the 2nd UE institute in the cell without idle frequency range time, parameter determination module 62 can according to the 2nd UE receptible minimum speed limit determination power adjustment parameters, then power regulation module 63 can determine according to parameter determination module 62 power adjustment parameters, the priority of a UE and priority adjustment the 2nd community, UE place of the 2nd UE that obtains in advance be to the down transmitting power of the 2nd UE.Above-mentioned power adjustment apparatus can according to the transmitting power of the priority adjustment interference source of power adjustment parameters and subscriber equipment, give power adjustment quantitatively, avoid the transmitting power adjusting interference source blindly, thus the accuracy of ICIC operation can be improved, and then the spectrum efficiency of edge customer can be promoted, improve systematic function.

Fig. 7 is the structural representation of another embodiment of power adjustment apparatus of the present invention, and the power adjustment apparatus in the present embodiment can realize Fig. 1 of the present invention and flow process embodiment illustrated in fig. 3 as a part for access network node or access network node.Compared with the power adjustment apparatus shown in Fig. 6, difference is, the power adjustment apparatus shown in Fig. 7 can also comprise:

Subscriber equipment handover module 64, for finding when power adjustment apparatus the 2nd UE using similar frequency bands with a UE in the adjacent area of a UE region, and the 2nd UE institute in the cell still available free frequency range time, the 2nd UE is switched to above-mentioned idle frequency range.

In the present embodiment, power regulation module 63 can work as the serving access network node that power adjustment apparatus is the 2nd community, UE place, during priority higher than the 2nd UE of the priority of the one UE, according to the power adjustment parameters that parameter determination module 62 is determined, adjust the serving access network node of the 2nd community, UE place to the down transmitting power of the 2nd UE.

In the another kind of implementation of the present embodiment, this power adjustment apparatus can also comprise:

Parameter receiver module 65, for the power adjustment parameters that receiving center Node Controller sends; At this moment, power regulation module 63 can work as the serving access network node that power adjustment apparatus is the 2nd community, UE place, during priority higher than the 2nd UE of the priority of the one UE, adjust the serving access network node of the 2nd community, UE place to the down transmitting power of the 2nd UE according to the power adjustment parameters that parameter receiver module 65 receives.

In addition, central node controller when the priority of the priority of a UE higher than the 2nd UE, can send above-mentioned power adjustment parameters to this power adjustment apparatus, during priority not higher than the 2nd UE of the priority of a UE, does not then send out.Like this, parameter receiver module 65 can the power adjustment parameters that sends when priority higher than the 2nd UE of the priority of a UE of receiving center Node Controller, power regulation module 63 can work as power adjustment apparatus when being the serving access network node of the 2nd community, UE place, and the power adjustment parameters directly received according to parameter receiver module 65 adjusts the serving access network node of the 2nd community, UE place to the down transmitting power of the 2nd UE.

Particularly, it is α that the power regulation module 63 in the present embodiment can work as power adjustment parameters _h, the transmitting power of the serving access network node of the 2nd community, UE place is P ₂time, the down transmitting power of serving access network node to the 2nd UE of the 2nd community, UE place is reduced to (1-α _h) P ₂; Wherein, 0 < α _h< 1, and α _hbe not less than the minimum power adjustment parameter making the edge throughput of the 2nd community, UE place have postiive gain.

Above-mentioned power adjustment apparatus can according to the transmitting power of the priority adjustment interference source of power adjustment parameters and subscriber equipment, give power adjustment quantitatively, avoid the transmitting power adjusting interference source blindly, thus the accuracy of ICIC operation can be improved, and then the spectrum efficiency of edge customer can be promoted, improve systematic function.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.

Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (18)

1. a power regulating method, is characterized in that, comprising:

Network side node receives the signaling that adjacent area access network node sends, and described signaling carries the frequency range that relative arrowband transmitted power in adjacent area is greater than the priority of the first user equipment of predetermined threshold value, described first user equipment region and use;

When described network side node finds the second subscriber equipment with described first user equipment use similar frequency bands in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell without idle frequency range time, described network side node is according to described second subscriber equipment receptible minimum speed limit determination power adjustment parameters, and according to the power adjustment parameters determined, when priority higher than the second subscriber equipment obtained in advance of the priority of described first user equipment, adjust described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

2. method according to claim 1, is characterized in that, described method also comprises:

When described network side node finds the second subscriber equipment with described first user equipment use similar frequency bands in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell still available free frequency range time, described second subscriber equipment is switched to described idle frequency range by described network side node.

3. method according to claim 1, is characterized in that, described network side node comprises the serving access network node of described second community, subscriber equipment place;

The described power adjustment parameters according to determining, when priority higher than the second subscriber equipment obtained in advance of the priority of described first user equipment, adjusts described second down transmitting power of community, subscriber equipment place to described second subscriber equipment and comprises:

When priority higher than the second subscriber equipment obtained in advance of the priority of described first user equipment, described serving access network node, according to described power adjustment parameters, adjusts the serving access network node of described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

4. method according to claim 2, is characterized in that, described network side node comprises the serving access network node of described second community, subscriber equipment place;

Described second subscriber equipment is switched to described idle frequency range and comprises by described network side node:

Described second subscriber equipment is switched to described idle frequency range by described serving access network node.

5. method according to claim 1, is characterized in that, described network side node comprises central node controller;

The described power adjustment parameters according to determining, when priority higher than the second subscriber equipment obtained in advance of the priority of described first user equipment, adjusts described second down transmitting power of community, subscriber equipment place to described second subscriber equipment and comprises:

When priority higher than the second subscriber equipment obtained in advance of the priority of described first user equipment, the power adjustment parameters determined is sent to the serving access network node of described second community, subscriber equipment place by described central node controller, for the serving access network node of described second community, subscriber equipment place according to described power adjustment parameters, adjust the serving access network node of described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment; Or,

The power adjustment parameters determined is sent to the serving access network node of described second community, subscriber equipment place by described central node controller, for the serving access network node of described second community, subscriber equipment place when priority higher than described second subscriber equipment of the priority of described first user equipment, according to described power adjustment parameters, adjust the serving access network node of described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

6. method according to claim 2, is characterized in that, described network side node comprises central node controller;

Described second subscriber equipment is switched to described idle frequency range and comprises by described network side node:

Described central node controller notifies that described second subscriber equipment is switched to described idle frequency range by the serving access network node of described second community, subscriber equipment place.

7. the method according to claim 3 or 5, is characterized in that, when described power adjustment parameters is α _h, the transmitting power of the serving access network node of described second community, subscriber equipment place is P ₂time, described according to described power adjustment parameters, the down transmitting power of serving access network node to described second subscriber equipment adjusting described second community, subscriber equipment place comprises:

The down transmitting power of serving access network node to described second subscriber equipment of described second community, subscriber equipment place is reduced to (1-α _h) P ₂; Wherein, 0 < α _h< 1, and α _hbe not less than the minimum power adjustment parameter making the edge throughput of described second community, subscriber equipment place have postiive gain.

8. a power adjustment apparatus, is characterized in that, comprising:

Receiver module, for receiving the signaling that adjacent area access network node sends, described signaling carries the frequency range that relative arrowband transmitted power in adjacent area is greater than the priority of the first user equipment of predetermined threshold value, described first user equipment region and use;

Determination module, for finding the second subscriber equipment with described first user equipment use similar frequency bands when described power adjustment apparatus in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell without idle frequency range time, according to described second subscriber equipment receptible minimum speed limit determination power adjustment parameters;

Adjusting module, for the power adjustment parameters determined according to described determination module, when priority higher than the second subscriber equipment obtained in advance of the priority of the first user equipment that described receiver module receives, adjust described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

9. power adjustment apparatus according to claim 8, is characterized in that, described power adjustment apparatus also comprises:

Handover module, for finding the second subscriber equipment with described first user equipment use similar frequency bands when described power adjustment apparatus in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell still available free frequency range time, described second subscriber equipment is switched to described idle frequency range.

10. power adjustment apparatus according to claim 8, is characterized in that,

Described adjusting module, specifically for when priority higher than the second subscriber equipment obtained in advance of the priority of described first user equipment, the power adjustment parameters that described determination module is determined is sent to the serving access network node of described second community, subscriber equipment place, for the serving access network node of described second community, subscriber equipment place according to described power adjustment parameters, adjust the serving access network node of described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment; Or,

Described adjusting module, power adjustment parameters specifically for being determined by described determination module sends to the serving access network node of described second community, subscriber equipment place, for the serving access network node of described second community, subscriber equipment place when priority higher than described second subscriber equipment of the priority of described first user equipment, according to described power adjustment parameters, adjust the serving access network node of described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

11. power adjustment apparatus according to claim 9, is characterized in that,

Described handover module, specifically for notifying that described second subscriber equipment is switched to described idle frequency range by the serving access network node of described second community, subscriber equipment place.

12. 1 kinds of power adjustment apparatus, is characterized in that, comprising:

Signaling receiver module, for receiving the signaling that adjacent area access network node sends, described signaling carries the frequency range that relative arrowband transmitted power in adjacent area is greater than the priority of the first user equipment of predetermined threshold value, described first user equipment region and use;

Parameter determination module, for finding the second subscriber equipment with described first user equipment use similar frequency bands when described power adjustment apparatus in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell without idle frequency range time, according to described second subscriber equipment receptible minimum speed limit determination power adjustment parameters;

Power regulation module, for the power adjustment parameters determined according to described parameter determination module, when priority higher than the second subscriber equipment obtained in advance of the priority of the first user equipment that described signaling receiver module receives, adjust described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

13. power adjustment apparatus according to claim 12, is characterized in that, also comprise:

Subscriber equipment handover module, for finding the second subscriber equipment with described first user equipment use similar frequency bands when described power adjustment apparatus in the adjacent area of described first user equipment region, and described second subscriber equipment institute in the cell still available free frequency range time, described second subscriber equipment is switched to described idle frequency range.

14. power adjustment apparatus according to claim 12, is characterized in that,

Described power regulation module, specifically for when described power adjustment apparatus being the serving access network node of described second community, subscriber equipment place, during priority higher than described second subscriber equipment of the priority of described first user equipment, according to the power adjustment parameters that described parameter determination module is determined, adjust the serving access network node of described second community, subscriber equipment place to the down transmitting power of described second subscriber equipment.

15. power adjustment apparatus according to claim 12, is characterized in that, also comprise:

Parameter receiver module, for the power adjustment parameters that receiving center Node Controller sends;

Described power regulation module, serving access network node also for when described power adjustment apparatus being described second community, subscriber equipment place, during priority higher than described second subscriber equipment of the priority of described first user equipment, the serving access network node of described second community, subscriber equipment place of power adjustment parameters adjustment received according to described parameter receiver module is to the down transmitting power of described second subscriber equipment.

16. power adjustment apparatus according to claims 14 or 15, is characterized in that,

Described power regulation module is α specifically for working as described power adjustment parameters _h, the transmitting power of the serving access network node of described second community, subscriber equipment place is P ₂time, the down transmitting power of serving access network node to described second subscriber equipment of described second community, subscriber equipment place is reduced to (1-α _h) P ₂; Wherein, 0 < α _h< 1, and α _hbe not less than the minimum power adjustment parameter making the edge throughput of described second community, subscriber equipment place have postiive gain.

17. 1 kinds of central node controller, is characterized in that, comprise the power adjustment apparatus as described in claim 8-11 any one.

18. 1 kinds of access network nodes, is characterized in that, comprise the power adjustment apparatus as described in claim 12-16 any one.