CN102869052B - Communication means in isomery mobile communications network and equipment - Google Patents

Abstract

The present invention relates to the communication means in isomery mobile communications network and equipment.Method provided in the present invention and equipment, it is possible to be the empty frame density of macro base station calculation optimization adaptively based on the load balance between the subscriber equipment that macro base station and attached access point thereof are serviced, and correspondingly adjust empty frame pattern.Each macro base station empty frame pattern configuration thus can be independently updated.Hence in so that the configuration of system resource is the most flexible and effective.Further, only need to consume a small amount of signaling consumption by X2 interface between macro base station and attached access point thereof.

Description

Communication means in isomery mobile communications network and equipment

Technical field

The present invention relates to mobile communication technology, more particularly, to the communication means in isomery mobile communications network and equipment.

Background technology

At present, heterogeneous network (heterogeneousnetwork, HTN) is accepted by LTE-A research project.Heterogeneous network is defined as a kind of hybrid network to be disposed, and wherein, outside the community of traditional macro base station, also includes the community of lower-wattage base station, such as femto base station, base station from home and or the community of relay station.These less communities are often used in region (such as indoor) the extension signal of macro base station dtr signal and cover or for increasing network capacity at user's close quarters (such as station, airport or market).But, divide and obtained cell splitting gain and introduce and work in the relatively small-cell of similar frequency bands with macrocell and will result in new interference, accordingly, it would be desirable to new technology processes inter cell interference coordination (ICIC) problem under co-channel (co-channel) environment in heterogeneous network.

For heterogeneous network, selecting the most popular method of Serving cell is biasing community selection scheme, and it can be expressed as with formula: Cell_ID_serving=argmax_{i}{RSRP_i+bias_i}.Wherein, RSRP_iAnd bias_iRepresent Reference Signal Received Power and the bias of i-th community respectively；For macrocell, this bias is zero；And for relatively small-cell, this bias is non-negative.Namely when selecting Serving cell according to Reference Signal Received Quality, relatively small-cell giving certain compensation, this scheme is for balanced load thus makes full use of usable radio resources and plays a role.But, this key factor is disturbed in the consideration that is designed without of biasing community selection scheme, thus can not obtain preferable systematic function in some cases.Subscriber equipment (being properly termed as risk of interferences subscriber equipment) in the footprint edges of relatively small-cell will be subject to the severe jamming from one or more macrocells.In order to alleviate such interference, some subframe of macrocell can be configured to empty frame (almostblanksubframe, ABS), and empty frame does not typically have data to transmit, and only has on a small quantity or even without controlling signalling.

Risk of interferences subscriber equipment can avoid the strong interference from macrocell in empty frame, and empty frame density the most fixing in the prior art and pattern configuration, such configuration does not accounts for the change of real network situation, thus lacking the effective utilization to frequency spectrum resource, systematic function needs to be improved further.

Summary of the invention

It is an object of the invention to overcome disadvantages mentioned above of the prior art, it is provided that a kind of scheme is to be adaptively calculated the empty frame density of macro base station, thus more effectively allocating system resource while avoiding disturbing between community.

In one embodiment of the invention, propose a kind of communication means in isomery mobile communications network, described heterogeneous communications network include a macrocell and macro base station thereof and be positioned at this macrocell within by administrative at least one the attached access point of this macro base station, described communication means comprises the following steps:

I. at least one attached access point described determines risk of interferences subscriber equipment at least based on received signal quality from the subscriber equipment that it is serviced；

Ii. at least one attached access point described sends the classification information of the subscriber equipment that signaling message is serviced with instruction at least one attached access point described by X2 interface to described macro base station；

The most described macro base station determines the density of empty frame based on proportional fairness principle；

The most described macro base station based on determined by the density of empty frame carry out empty frame pattern selection；

The most described macro base station sends signaling message to inform that described empty frame pattern selects by X2 interface at least one attached access point described；

Vi. its subscriber equipment serviced informed by described empty frame pattern by least one attached access point described, and by the downlink data dispatching of described risk of interferences subscriber equipment in selected empty frame.

In another embodiment of the present invention, propose the communication means in a kind of attached access point in isomery mobile communications network, being administered within described attached access point is positioned at a macrocell and by the macro base station of this macrocell, described communication means comprises the following steps:

A. from the subscriber equipment that it is serviced, risk of interferences subscriber equipment is determined at least based on received signal quality；

B. sent the classification information of the subscriber equipment that signaling message is serviced with the described attached access point of instruction to described macro base station by X2 interface；

C. the signaling message of the instruction empty frame pattern from described macro base station is received；

D. described empty frame pattern is informed its subscriber equipment serviced, and by the downlink data dispatching of described risk of interferences subscriber equipment in empty frame.

In yet another embodiment of the present invention, propose the communication means in a kind of macro base station in isomery mobile communications network, the administration of described macro base station is positioned at least one the attached access point within its macrocell serviced, and described communication means comprises the following steps:

A. the signaling message of the classification information for the subscriber equipment that indicates at least one attached access point described to be serviced from least one attached access point described is received；

B. the density of empty frame is determined based on proportional fairness principle；

C. based on determined by the density of empty frame carry out empty frame pattern selection；

D. select to inform at least one attached access point described by described empty frame pattern by X2 interface.

In yet another embodiment of the present invention, it is provided that a kind of access point apparatus, including processor and the storage device being associated with described processor；Wherein, when within described access point apparatus is positioned at a macrocell of isomery mobile communications network and by the macro base station of this macrocell administered time, described processor is configured that

-from the subscriber equipment that described access point apparatus is serviced, determine risk of interferences subscriber equipment at least based on received signal quality；And

-send, to described macro base station, the classification information of subscriber equipment that signaling message is serviced to indicate described attached access point apparatus by X2 interface；And

-reception is from the signaling message of the instruction empty frame pattern of described macro base station；And

-described empty frame pattern informed the subscriber equipment that described access point apparatus is serviced, and by the downlink data dispatching of described risk of interferences subscriber equipment in empty frame.

In another embodiment of the present invention, it is proposed that a kind of macro base station equipment, including processor and the storage device being associated with described processor；Wherein, when described macro base station equipment is arranged among isomery mobile communications network and administers at least one the attached access point being positioned within its macrocell serviced, described processor is configured that

-reception is from the signaling message of the classification information of the subscriber equipment being used for indicating at least one attached access point described to be serviced of at least one attached access point described；

-density of empty frame is determined based on proportional fairness principle；

-based on determined by the density of empty frame carry out empty frame pattern selection；

-select to inform at least one attached access point described by described empty frame pattern by X2 interface.

Method provided in the application of the invention and equipment, it is possible to be the empty frame density of macro base station calculation optimization adaptively based on the load balance between the subscriber equipment that macro base station and attached access point thereof are serviced, and correspondingly adjust empty frame pattern.Each macro base station empty frame pattern configuration thus can be independently updated.Hence in so that the configuration of system resource is the most flexible and effective.Further, only need to consume a small amount of signaling consumption by X2 interface between macro base station and attached access point thereof.

Accompanying drawing explanation

The detailed description that non-limiting example is made made with reference to the following drawings by reading, the other features, objects and advantages of the present invention will become more apparent:

Fig. 1 shows the schematic diagram of the cell configuration of mobile communications network according to an embodiment of the invention；

Fig. 2 shows the schematic diagram of the network configuration within the macrocell of macro base station according to an embodiment of the invention and service thereof；

Fig. 3 shows the flow chart of the communication means in isomery mobile communications network according to an embodiment of the invention；

In the drawings, running through different diagrams, same or similar reference represents characteristic of correspondence.

Detailed description of the invention

Without loss of generality, following example in the present invention are all to be applied in LTE network or LTE-A network, macro base station is such as but not limited to node B (NodeB) or evolution type node B (eNB), and the administrative attached access point of macro base station is such as but not limited to femto base station (picoBS), base station from home (femtoBS) or relay station (relaystation).Those skilled in the art will be understood that the core of the present invention and essence can also be applied to other mobile communications networks.

Fig. 1 shows the schematic diagram of the cell configuration of mobile communications network according to an embodiment of the invention.In figure, circular labelling represents that macro base station, triangular marker represent the access point of lower-wattage.Figure shows seven adjacent macro base stations and cell configuration thereof, particularly particularly illustrate macro base station 101 and three macrocells 102,103,104 serviced thereof, and within being positioned at the signal coverage of macro base station 101 and by the attached access point 121,122,123,124,125 of macro base station 101 administrative (scheduling resource distribution).Certainly, such cell configuration is only illustrative and not restrictive.Although macro base station 101 serves three sector 102-104, those skilled in the art are it should be appreciated that what the downlink radio frequency resource of attached access point within a macrocell and signal coverage thereof was dispatched by macro base station together typically as an entirety；And between each macrocell of being serviced of same macro base station, then allow the multiplexing of frequency spectrum resource because of separating of sense.

Fig. 2 shows the schematic diagram of the network configuration within the macrocell of macro base station according to an embodiment of the invention and service thereof.Figure shows macro base station 201 and a macrocell 211 of service thereof, it is positioned at the attached access point of two within the signal coverage of macrocell 211 221 and 222, subscriber equipment 251-253 within the service area of access point 221, the subscriber equipment 254-256 within the service area of access point 222.Intuitively, subscriber equipment 251,252,254 is positioned at the edge of respective access point service area and near macro base station 201, thus is easier to by disturbing from the signal of macro base station 201.Can be by the downlink data dispatching of this type of subscriber equipment be avoided interference in empty frame (ABS).

Fig. 3 shows the flow chart of the communication means in isomery mobile communications network according to an embodiment of the invention, described heterogeneous communications network include a macrocell and macro base station thereof and be positioned at this macrocell within by administrative at least one the attached access point of this macro base station.The method include step 301 that macro base station side performs, 302,303,304 and perform in attached access point side step 321,322,323,324.Below in conjunction with Fig. 2, Fig. 3, the method is illustrated.

First perform step 321 in attached access point 221,222 side, each attached access point determines risk of interferences subscriber equipment at least based on received signal quality respectively from the subscriber equipment of each service.The downlink data of risk of interferences subscriber equipment needs to be dispatched to empty frame (ABS) to avoid the interference between community.

In a kind of specific embodiment, in step 321, that each service, Reference Signal Received Quality (RSRQ) are defined as risk of interferences subscriber equipment less than the subscriber equipment of predetermined threshold by attached access point 221,222.Here predetermined threshold is such as but not limited to-6dB.Here reference signal refers to the specific reference signals of attached access point, and this implementation is applicable to attached access point (especially relay station) and also has the situation of the cell specific reference signal of self.

In another kind of concrete implementation mode, in step 321, the difference of the access point signals quality of reception that each service, attached with macro base station signal receiving quality is defined as risk of interferences subscriber equipment less than the subscriber equipment of predetermined threshold by attached access point 221,222.This implementation considers from macro base station and the signal receiving quality of attached access point simultaneously so that the determination to risk of interferences subscriber equipment is more accurate.

Communication between macro base station 201 and attached access point 221,222 thereof is preferably completed by X2 interface.

Next perform step 322 in attached access point 221,222 side, sent the classification information of the subscriber equipment that signaling message is serviced with each attached access node of instruction by X2 interface to macro base station 201.The quantity of the risk of interferences subscriber equipment total, therein of the subscriber equipment that classification information is serviced for representing an access point and the quantity of non-interference risk subscribers equipment.Because sum is quantity and the quantity sum of non-interference risk subscribers equipment of risk of interferences subscriber equipment, can only indicate among three in the signaling messages both, the quantity of the total and risk of interferences subscriber equipment therein of the subscriber equipment that such as one access point is serviced, to reduce signaling consumption.

In a kind of specific implementation, the classification information in this signaling message comprises two designators, is respectively used to instruction and sends total and wherein risk of interferences number of user equipment the concrete numerical value of subscriber equipment that the attached access point of this signaling message is serviced.When the service ability of this attached access point is less than 64 subscriber equipmenies, the designator of two 6 bits can meet needs.

In another kind of specific implementation, the designator that classification information is comprised is for indicating number of levels.Such as but not limited to, every 8 subscriber equipmenies are a rank, and 0 represents 0-7 subscriber equipment, and 1 represents 8-15 subscriber equipment, and 2 represent 16-23 subscriber equipment, by that analogy.Although such mode feedback accuracy is relatively low, but signaling consumption can be reduced further.And macro base station determines empty frame in units of complete subframe, such feedback accuracy can also meet use demand.

In macro base station 201 side, in step 301, the signaling message of the classification information of the subscriber equipment being used for indicating described attached access point to be serviced from attached access point (221,222) is received.As it was previously stated, this signaling message is received by X2 interface.

As it was previously stated, classification information is used for quantity and the quantity of non-interference risk subscribers equipment of the risk of interferences subscriber equipment total, therein of the subscriber equipment that one access point of expression is serviced.Because sum is quantity and the quantity sum of non-interference risk subscribers equipment of risk of interferences subscriber equipment, can only indicate among three in the signaling messages both, such as classification information includes total quantity and the quantity of risk of interferences subscriber equipment therein of the subscriber equipment that each access point serviced respectively.

According to this classification information, macro base station 201 can learn quantity and the quantity of non-interference risk subscribers equipment of the risk of interferences subscriber equipment total, therein of the subscriber equipment that each access point serviced respectively.These number of user equipment that macro base station 201 is learnt can be concrete numerical value, can also be an order of magnitude not (or scope).

It follows that in step 302, macro base station 201 determines the density of empty frame based on proportional fairness principle.

Specifically, the density of empty frame is confirmed as the ratio of total quantity of the subscriber equipment that the quantity of the risk of interferences subscriber equipment that each attached access point 221,222 is serviced is serviced relative to macro base station 201 and each attached access point 221,222 described.

The derivation of preferred empty frame (ABS) density based on equitable proportion given below, derives and uses the symbol as defined in table 1 below:

Table 1 symbol defines

In order to all subscriber equipmenies of a website carry out optimization based on equitable proportion, definition is such as the equitable proportion utility function of formula (1).

$U=\underset{m_j}{\mathrm{\Π}}\left(\stackrel{\‾}{r_j}\right)---\left(1\right)$

For not having the setting (empty frame density is 0) of empty frame, utility function can be expressed as formula (2):

$U_0=\underset{m_j\∈\mathrm{eNB}}{\mathrm{\Π}}\left(\frac{r_j}{k_{\mathrm{eNB}}}\right)\·\underset{i}{\mathrm{\Π}}\left(\underset{m_j\∈\mathrm{Pic}{o}_i}{\mathrm{\Π}}\left(\frac{r_j}{k_i}\right)\right)---\left(2\right)$

Arranging (empty frame density is θ) for empty frame, utility function can be expressed as formula (3):

$U_{\mathrm{\θ}}=\underset{m_j\∈\mathrm{eNB}}{\mathrm{\Π}}((1-\mathrm{\θ})\·\frac{r_j}{k_{\mathrm{eNB}}})\·\underset{i}{\mathrm{\Π}}\left(\underset{m_j\∈{\mathrm{Pico}}_i}{\mathrm{\Π}}(\underset{m_j\∈\mathrm{Victim}}{\mathrm{\Π}}(\mathrm{\θ}\·\frac{{r_j}^{\′}}{{k_i}^{\′}})\·\underset{m_j\∈\mathrm{Non}-\mathrm{Victim}}{\mathrm{\Π}}((1-\mathrm{\θ})\·\frac{r_j}{k_i-{k_i}^{\′}}))\right)---\left(3\right)$

Then formula (4) is used to calculate increment I_θ, it is effectiveness U_θWith U₀Ratio:

$I_{\mathrm{\θ}}=\frac{U_{\mathrm{\θ}}}{U_0}=\frac{{(1-\mathrm{\θ})}^{k_{\mathrm{eNB}}+\underset{i}{\mathrm{\Σ}}(k_i-{k_i}^{\′})}\·{\mathrm{\θ}}^{\underset{i}{\mathrm{\Σ}}{k_i}^{\′}}\·\underset{i}{\mathrm{\Π}}{k_i}^{k_i}\·\underset{m_j\∈\mathrm{Victim}}{\mathrm{\Π}}\frac{{r_j}^{\′}}{r_i}}{\underset{i}{\mathrm{\Π}}{\left({k_i}^{\′}\right)}^{{k_i}^{\′}}\·\underset{i}{\mathrm{\Π}}{(k_i-{k_i}^{\′})}^{(k_i-{k_i}^{\′})}}---\left(4\right)$

Because there is following lemma: $\underset{i=1..k}{\mathrm{\Π}}\left({x_i}^{n_i}\right)\≤{\left(\frac{\underset{i=1..k}{\mathrm{\Σ}}{x}_i}{\underset{i=1..k}{\mathrm{\Σ}}{n}_i}\right)}^{\underset{i=1..k}{\mathrm{\Σ}}{n}_i}\·\underset{i=1..k}{\mathrm{\Π}}{n_i}^{n_i},$ Wherein, x_i>=0, n_i∈ N, the condition obtaining equal sign is: $\∀i,j=1..k,\frac{x_i}{n_i}=\frac{x_j}{n_j}.$

Then formula (5) can be obtained:

$I_{\mathrm{\θ}}=\frac{\underset{i}{\mathrm{\Π}}{k_i}^{k_i}\·\underset{m_j\∈\mathrm{Victim}}{\mathrm{\Π}}\frac{{r_j}^{\′}}{r_i}}{\underset{i}{\mathrm{\Π}}{{\mathrm{}}^{\left({k_i}^{\′}\right)}}^{{k_i}^{\′}}\·\underset{i}{\mathrm{\Π}}{(k_i-{k_i}^{\′})}^{(k_i-{k_i}^{\′})}}\·{(1-\mathrm{\θ})}^{k_{\mathrm{eNB}}+\underset{i}{\mathrm{\Σ}}(k_i-{k_i}^{\′})}\·{\mathrm{\θ}}^{\underset{i}{\mathrm{\Σ}}{k_i}^{\′}}$

$=A\·{(1-\mathrm{\θ})}^B\·{\mathrm{\θ}}^C$

$\≤A\·{\left(\frac{1}{B+B}\right)}^{B+C}\·B^B\·C^C---\left(5\right)$

$A=\frac{\underset{i}{\mathrm{\Π}}{k_i}^{k_i}\·\underset{m_j\∈\mathrm{Victim}}{\mathrm{\Π}}\frac{{r_j}^{\′}}{r_i}}{\underset{i}{\mathrm{\Π}}{\left({k_i}^{\′}\right)}^{{k_i}^{\′}}\·\underset{i}{\mathrm{\Π}}{(k_i-{k_i}^{\′})}^{(k_i-{k_i}^{\′})}}$

$B=k_{\mathrm{eNB}}+\underset{i}{\mathrm{\Σ}}(k_i-{k_i}^{\′})$

Wherein: $C=\underset{i}{\mathrm{\Σ}}{k_i}^{\′}.$

The condition obtaining equal sign is: $\frac{1-\mathrm{\θ}}{B}=\frac{\mathrm{\θ}}{C}.$

Namely whenTime, maximized U can be obtained_θ.Wherein, k_eNBRepresent the quantity of the subscriber equipment that this macro base station serviced, k_iRepresent the sum of the subscriber equipment that attached access point i serviced, and k_i' represent the quantity of risk of interferences subscriber equipment therein.

In following step 303, macro base station 201 based on determined by the density of empty frame carry out empty frame pattern selection.

Specifically, macro base station 201 according to the subframe of dispatching cycle sum with determined by the product of density of empty frame, based on the quantity above rounding principle and determining empty frame.Such as, 10 subframes are a dispatching cycle, and empty frame density determined by step 302 is 0.23, then in this dispatching cycle, the quantity of empty frame will determine as 3.In the present invention, empty frame quantity determined by basis can be carried out based on any favourable principle and carry out the selection of empty frame (ABS) pattern.Such as, for simplicity meter, can by this dispatching cycle front 3 can be used for empty frame subframe be defined as empty frame.Round up the downlink data that ensure that enough empty frame for dispatching risk of interferences subscriber equipment.

Then, in step 304, described empty frame pattern is selected to inform attached access point 221,222 by macro base station 201 by X2 interface.

Specifically, macro base station 201 can send a binary sequence to indicate empty frame pattern to select, the length of this binary sequence is equal to the total quantity of subframe in the dispatching cycle, each binary number in sequence is in order corresponding to each subframe in the dispatching cycle, and 1 represents empty frame, the 0 non-empty frame of expression.

Following step returns to attached access point 221,222 side.

In step 323, attached access point 221,222 receives the signaling message of the instruction empty frame pattern from macro base station 201.As it was previously stated, this signaling message is received by X2 interface.

In step 324, its subscriber equipment serviced informed by described empty frame pattern by attached access point 221,222, and by the downlink data dispatching of risk of interferences subscriber equipment determined by step 321 in empty frame.Specifically, empty frame pattern can be informed its subscriber equipment serviced by radio resource control layer (RRC) signaling by attached access point 221,222.

By making in aforementioned manners, it is possible to be the empty frame density of macro base station calculation optimization adaptively based on the load balance between the subscriber equipment that macro base station and attached access point thereof are serviced, and correspondingly adjust empty frame pattern.Each macro base station empty frame pattern configuration thus can be independently updated.Hence in so that the configuration of system resource is the most flexible and effective.Further, only need to consume a small amount of signaling consumption by X2 interface between macro base station and attached access point thereof.

In one embodiment of the invention, it is proposed that a kind of access point apparatus, including processor and the storage device being associated with described processor；Wherein, when within described access point apparatus is positioned at a macrocell of isomery mobile communications network and by the macro base station of this macrocell administered time, described processor is configured to perform step 321-324 in preceding method, it may be assumed that

-from the subscriber equipment that described access point apparatus is serviced, determine risk of interferences subscriber equipment at least based on received signal quality；And

-send, to described macro base station, the classification information of subscriber equipment that signaling message is serviced to indicate described attached access point apparatus by X2 interface；And

-reception is from the signaling message of the instruction empty frame pattern of described macro base station；And

-described empty frame pattern informed the subscriber equipment that described access point apparatus is serviced, and by the downlink data dispatching of described risk of interferences subscriber equipment in empty frame.

This access point apparatus is such as but not limited to femto base station (picoBS), base station from home (femtoBS) or relay station (relaystation).

In one embodiment of the invention, it is proposed that a kind of macro base station equipment, including processor and the storage device being associated with described processor；Wherein, when described macro base station equipment is arranged among isomery mobile communications network and administers at least one the attached access point being positioned within its macrocell serviced, described processor is configured to perform step 301-304 in preceding method, it may be assumed that

-reception is from the signaling message of the classification information of the subscriber equipment being used for indicating at least one attached access point described to be serviced of at least one attached access point described；

-density of empty frame is determined based on proportional fairness principle；

-based on determined by the density of empty frame carry out empty frame pattern selection；

-select to inform at least one attached access point described by described empty frame pattern by X2 interface.

This macro base station equipment is such as but not limited to node B (NodeB) or evolution type node B (eNB).

Those skilled in the art will be understood that above-described embodiment is all illustrative and not restrictive.The different technologies feature occurred in different embodiments can be combined, to obtain beneficial effect.Those skilled in the art, on the basis of research accompanying drawing, specification and claims, will be understood that and realize other embodiments changed of disclosed embodiment.In detail in the claims, term " includes " being not precluded from other devices or step；Indefinite article " one " is not excluded for multiple；Term " first ", " second " are used for indicating title not for representing any specific order.Any reference in claim is all understood not to limiting of its scope.The function of the some occurred in claim can be realized by a single hardware or software module, and the function of certain part can also be realized by multiple different hardware or software module.Some technical characteristic occurs in and is not meant in different dependent claims to be combined obtaining beneficial effect by these technical characteristics.

Claims (12)

1. the communication means in isomery mobile communications network, described heterogeneous communications network include a macrocell and macro base station thereof and be positioned at this macrocell within by administrative at least one the attached access point of this macro base station, described communication means comprises the following steps:

I. at least one attached access point described determines risk of interferences subscriber equipment at least based on received signal quality from the subscriber equipment that it is serviced；

Ii. at least one attached access point described sends the classification information of the subscriber equipment that signaling message is serviced with instruction at least one attached access point described by X2 interface to described macro base station；

The most described macro base station determines the density of empty frame based on proportional fairness principle；

The most described macro base station based on determined by the density of empty frame carry out empty frame pattern selection；

The most described macro base station sends signaling message to inform that described empty frame pattern selects by X2 interface at least one attached access point described；

Vi. its subscriber equipment serviced informed by described empty frame pattern by least one attached access point described, and by the downlink data dispatching of described risk of interferences subscriber equipment in selected empty frame.

2. the communication means in the attached access point in isomery mobile communications network, is administered within described attached access point is positioned at a macrocell and by the macro base station of this macrocell, and described communication means comprises the following steps:

A. from the subscriber equipment that it is serviced, risk of interferences subscriber equipment is determined at least based on received signal quality；

B. sent the classification information of the subscriber equipment that signaling message is serviced with the described attached access point of instruction to described macro base station by X2 interface；

C. the signaling message of the instruction empty frame pattern from described macro base station is received；

D. described empty frame pattern is informed its subscriber equipment serviced, and by the downlink data dispatching of described risk of interferences subscriber equipment in empty frame.

Method the most according to claim 2, it is characterised in that

In described step a, serviced by described attached access point, Reference Signal Received Quality is defined as risk of interferences subscriber equipment less than the subscriber equipment of predetermined threshold.

Method the most according to claim 2, it is characterised in that

In described step a, the access point signals quality of reception that serviced by described attached access point, attached is defined as risk of interferences subscriber equipment with the difference of macro base station signal receiving quality less than the subscriber equipment of predetermined threshold.

Method the most according to claim 2, it is characterised in that

Described classification information includes the total quantity of the subscriber equipment that described attached access point serviced and the quantity of wherein risk of interferences subscriber equipment.

Method the most according to claim 2, it is characterised in that described attached access point is femto base station, base station from home or relay station.

7. the communication means in the macro base station in isomery mobile communications network, the administration of described macro base station is positioned at least one the attached access point within its macrocell serviced, and described communication means comprises the following steps:

A. the signaling message of the classification information for the subscriber equipment that indicates at least one attached access point described to be serviced from least one attached access point described is received；

B. the density of empty frame is determined based on proportional fairness principle；

C. based on determined by the density of empty frame carry out empty frame pattern selection；

D. select to inform at least one attached access point described by described empty frame pattern by X2 interface.

Method the most according to claim 7, it is characterised in that described classification information includes the total quantity of the subscriber equipment that at least one attached access point described serviced respectively and the quantity of wherein risk of interferences subscriber equipment；

In described step B, the density of empty frame is defined as the ratio of the total quantity of the subscriber equipment that the quantity of the risk of interferences subscriber equipment that at least one attached access point described is serviced is serviced relative to described macro base station and at least one attached access point described.

Method the most according to claim 7, it is characterised in that in described step C, according to the subframe of dispatching cycle sum with determined by the product of density of empty frame, based on the quantity above rounding principle and determining empty frame.

Method the most according to claim 7, it is characterised in that at least one attached access point described includes femto base station, base station from home or relay station.

11. 1 kinds of access point apparatus, including:

Processor and the storage device being associated with described processor；

Wherein, when within described access point apparatus is positioned at a macrocell of isomery mobile communications network and by the macro base station of this macrocell administered time, described processor is configured that

From the subscriber equipment that described access point apparatus is serviced, risk of interferences subscriber equipment is determined at least based on received signal quality；

Sent the classification information of the subscriber equipment that signaling message is serviced with the described attached access point apparatus of instruction to described macro base station by X2 interface；

Receive the signaling message of instruction empty frame pattern from described macro base station, described empty frame pattern by described macro base station based on determined by the density of empty frame select, described determined by the density of empty frame determined based on proportional fairness principle by macro base station；And

Described empty frame pattern is informed the subscriber equipment that described access point apparatus is serviced, and by the downlink data dispatching of described risk of interferences subscriber equipment in empty frame.

12. 1 kinds of macro base station equipment, including:

Processor and the storage device being associated with described processor；

Wherein, when described macro base station equipment is arranged among isomery mobile communications network and administers at least one the attached access point being positioned within its macrocell serviced, described processor is configured that

Receive the signaling message of the classification information of the subscriber equipment being used for indicating at least one attached access point described to be serviced from least one attached access point described；

The density of empty frame is determined based on proportional fairness principle；

The density of empty frame determined by based on carries out empty frame pattern selection；

Select to inform at least one attached access point described by described empty frame pattern by X2 interface.