CN103828415A - Method and apparatus for data transmission in communication system - Google Patents

Abstract

Embodiments of the disclosure provide methods and apparatuses for data transmission in a communication system. The system comprises a user equipment (UE), a serving base station (BS) which serves for the UE, and at least one interfering base station which interferes with the UE. A method according to the disclosure may comprise steps of: receiving a Channel Quality Indicator (CQI) corresponding to a CQI-measuring subframe from the UE; and obtaining a target CQI corresponding to a CQI-using subframe based on the received CQI, to transmit data to the UE according to the target CQI. A further method according to the disclosure may comprise steps of: measuring a Channel Quality Indicator (CQI) corresponding to a CQI-measuring subframe; and sending the measured CQI to the serving BS, so that the serving BS obtains a target CQI corresponding to a CQI-using subframe based on the measured CQI to transmit data to the UE according to the target CQI.

Description

Be used for the method and apparatus of the transfer of data of communication system

Technical field

Embodiments of the invention relate generally to the communication technology.More specifically, embodiments of the invention relate to the method and apparatus for the transfer of data of communication system.

Background technology

3GPP LTE and LTE-senior (LTE-Advanced) are one of cellular standards of future generation, and it has created new line of specifications for new evolution wireless access technology.In LTE-is senior, by comprise such as slightly (pico) eNB, femto (femto) eNB, via node and RRH, also referred to as the low power nodes (LPN) of small-cell base station (BS), disposed heterogeneous network (HetNet).Described low power nodes increases spectrum efficiency and improves system covering, but has introduced non-existent disturbed condition in homogeneous network.

A kind of disturbed condition is for example, from macro cell base station (grand eNB) to the subscriber equipment of being served by small-cell BS (UE) interference of (being called afterwards " SUE "), particularly in the time of application cell range expansion (CRE).Disturb for eliminating this type of, Inter-Cell Interference Coordination (eICIC) scheme of enhancing is suggested.Especially, macrocell BS will stop at the transmission in blank subframe (ABS) almost, and described SUE does not suffer the interference from grand eNB during these ABS.Therefore, in normal sub-frames with in ABS, be, different for the interference level of SUE.

Another disturbed condition is for example, from small-cell BS (slight eNB) to the UE being served by the macrocell BS interference of (being called afterwards " MUE ").In eICIC scheme, small-cell BS will stop transmission in blank subframe (ABS) almost, and described MUE does not suffer the interference from this small-cell BS during these ABS.Therefore, in normal sub-frames with in ABS, be, different for the interference level of MUE.

CQI (CQI) is the index of channel quality, and described channel quality is measured by Signal to Interference plus Noise Ratio (SINR) conventionally.Due to the different interference level in eICIC scheme, be necessary to make CQI feedback scheme to distinguish this different interference level.

A solution in existing solution is to feed back multiple CQI to its serving BS broadcasts from UE.Especially, UE carries out multiple CQI measurements to normal sub-frames and ABS, and described multiple CQI measurements are fed back to described serving BS broadcasts.But, consider existing communication protocol, it is difficult that this solution is applied directly to existing communication system.Meanwhile, in this solution, communication flows is increased, and this may have negative effect to the throughput of communication system.

Consider foregoing problems, be necessary to distinguish different interference levels in the situation that not carrying out multiple CQI measurement, thereby effectively reduce the interference to UE and improve transfer of data.

Summary of the invention

The present invention proposes the solution of distinguishing different interference levels in the situation that not carrying out multiple CQI measurement.Especially, the invention provides data transmission method and the device for HetNet eICIC communication system.

According to a first aspect of the invention, embodiments of the invention are provided for the method for the transfer of data in communication system.This communication system can comprise subscriber equipment (UE), serving BS (BS) for this UE service, and disturb this UE at least one disturb BS.The method can comprise the steps: to receive from UE the CQI (CQI) of measuring subframe corresponding to CQI-; And obtain the target CQI that uses subframe corresponding to CQI-based on received CQI, to transfer data to this UE according to this target CQI.

According to a second aspect of the invention, embodiments of the invention are provided for the method for the transfer of data in communication system.This communication system can comprise UE, serving BS broadcasts for this UE service, and disturb this UE at least one disturb BS.The method can comprise the steps: to measure the CQI that measures subframe corresponding to CQI-; And measured CQI is sent to serving BS broadcasts, make this serving BS broadcasts obtain the target CQI that uses subframe corresponding to CQI-based on measured CQI, to transfer data to UE according to this target CQI.

According to a third aspect of the invention we, embodiments of the invention are provided for the device of the transfer of data in communication system.Described communication system can comprise UE, be the serving BS broadcasts of described UE service, and disturb at least one interference BS of described UE.Described device can comprise: receiving element, is configured to receive from described UE the CQI that measures subframe corresponding to CQI-; And acquisition unit, be configured to obtain based on received CQI the target CQI that uses subframe corresponding to CQI-, to transfer data to described UE according to described target CQI.

According to a forth aspect of the invention, embodiments of the invention are provided for the device of the transfer of data in communication system.Described communication system can comprise UE, be the serving BS broadcasts of described UE service, and disturb at least one interference BS of described UE.Described device can comprise: measuring unit, is configured to measure the CQI that measures subframe corresponding to CQI-; And transmitting element, be configured to measured CQI to be sent to serving BS broadcasts, make described serving BS obtain the target CQI that uses subframe corresponding to CQI-based on measured CQI, to transfer data to described UE according to described target CQI.

Can expect that the present invention has the following advantages.Serving BS broadcasts can be adjusted the CQI receiving from UE according to the subframe bitmap of the abs mode of its neighbor bss, and therefore improve edge UE throughput and cell throughout the two.Meanwhile, multiple CQI measurements are no longer enforceable.

When read in conjunction with the accompanying drawings, according to the following description of specific embodiment, other feature and advantage of embodiments of the invention will be also apparent, and described accompanying drawing illustrates the principle of the embodiment of the present invention by way of example.

Accompanying drawing explanation

Embodiments of the invention are presented from the meaning of example, and their advantage explains in more detail being below referenced accompanying drawing, wherein:

Fig. 1 illustrates the schematic diagram of the communication system that can be applicable to embodiments of the invention;

Fig. 2 illustrates the flow chart for the method for the transfer of data of communication system according to the embodiment of the present invention;

Fig. 3 illustrates the flow chart of further embodiment according to the present invention for the method for the transfer of data of communication system;

Fig. 4 illustrates the flow chart of further embodiment according to the present invention for the method for the transfer of data of communication system;

Fig. 5 illustrates the flow chart for the method for the transfer of data of communication system according to embodiments of the invention;

Fig. 6 illustrates according to a further embodiment of the invention the flow chart for the method for the transfer of data of communication system;

Fig. 7 illustrates the flow chart of further embodiment according to the present invention for the method for the transfer of data of communication system;

Fig. 8 illustrates the block diagram for the device of the transfer of data of communication system according to embodiments of the invention;

Fig. 9 illustrates the block diagram of further embodiment according to the present invention for the device of the transfer of data of communication system; And

Figure 10 illustrates the schematic diagram of subframe bitmap according to an embodiment of the invention.

Specific embodiment

Various embodiment of the present invention is referenced accompanying drawing and describes in detail.Flow chart in figure and block diagram illustration devices in accordance with embodiments of the present invention, method and framework, function and the operation that can be carried out by computer program.In this respect, the each frame in flow chart or frame can representation module, a part for journey logic bomb, and this code packages is containing for carrying out one or more executable instruction of specific logical function.Should be noted that in some substitute, the function of indicating in frame can be to be different from occurring in sequence of illustrated order in figure.For example, be illustrated as that in fact two continuous frames can be carried out substantially concurrently or carry out with reverse order, this depends on relevant function.Should also be noted that each frame in block diagram and/or flow chart with and combination can or be realized by the combination of specialized hardware and computer instruction by the hardware based dedicated system realization for carrying out specific function/operation.

In the disclosure, subscriber equipment (UE) can refer to terminal, mobile terminal (MT), subscriber station (SS), portable subscriber station (PSS), mobile radio station (MS) or access terminal (AT), and some or all functions of this UE, terminal, MT, SS, PSS, MS or AT can be included.

In the disclosure, base station (BS) can refer to the NodeB (eBodeB or eNB) of Node B (NodeB or NB) or evolution.Base station can be macrocell BS or small-cell BS.According to the present invention, macrocell BS can be the base station of management macrocell, for example grand eNB, and small-cell BS can be the base station of management small-cell, for example slight eNB, femto eNB or some other suitable low power nodes.

According to embodiments of the invention, subframe can have dissimilar, such as (blank) and normal (normal) of blank.For example, for example, for example, when the subframe of disturbing BS (grand eNB) is blank type subframe (, the almost blank subframe ABS in eICIC scheme), this subframe can be the protected subframe of for example, locating in serving BS broadcasts (slight eNB); And for example, for example, when the subframe of disturbing BS (slight eNB) is blank type subframe (, the almost blank subframe ABS in eICIC scheme), this subframe can be the protected subframe of for example, locating in serving BS broadcasts (grand eNB).For the subframe that wherein transfer of data is normally carried out, this subframe can be called as normal type subframe (sometimes also referred to as not protected subframe).

According to embodiments of the invention, CQI-measures subframe can refer to the subframe that wherein CQI is measured by UE, and CQI-uses subframe can refer to the subframe that wherein CQI is used by BS.

First with reference to Fig. 1, it illustrates the schematic diagram of the communication system that can be applicable to embodiments of the invention.

The communication environment of Fig. 1 illustrates LTE system.Described system diagram expressivity ground comprises macrocell BS (for example grand eNB) 110, small-cell BS (for example slight eNB) 120, MUE (subscriber equipment of being managed by macrocell BS110) 130 and SUE (subscriber equipment of being managed by small-cell BS120) 140.Macrocell BS110 manages macrocell, and small-cell base station can be the low power nodes of management Femto cell, picocell etc.

As shown in Figure 1, SUE140 is served by small-cell BS120, and is disturbed by macrocell BS110.According to embodiments of the invention, other neighbor bss that SUE140 also can be included macrocell BS and small-cell BS disturb.Therefore, disturb BS to can be one or more.Illustrate that about Fig. 1 a BS (macrocell BS110) disturbs UE (SUE140), those skilled in the art will recognize that it is only unrestricted for diagram.

According to embodiments of the invention, MUE130 can be served by the macrocell BS110 being disturbed by small-cell BS120.According to embodiments of the invention, other neighbor bss that MUE130 also can be included macrocell BS and small-cell BS disturb.It will be understood by those skilled in the art that the present invention can be applicable to the scene that wherein SUE140 is disturbed by macrocell BS110 and the scene that wherein MUE130 is disturbed by small-cell BS120 the two.

With reference to Fig. 1, macrocell BS110 and small-cell BS120 coexist in communication system.Take SUE140 as example, it is served by small-cell BS120, and is disturbed by least one neighbor bss such as macrocell BS110.According to embodiments of the invention, SUE140 measures in subframe and measures CQI at CQI-, and this CQI is fed back to small-cell BS120.In response to receiving this CQI, small-cell BS120 determines the target CQI that uses subframe corresponding to CQI-based on received CQI, thereby by using this target CQI to transfer data to SUE140.

For better understanding, in LTE system, for example, in the communication environment of Fig. 1, following examples of the present disclosure are described.As skilled in the art will understand, the disclosure can be applied to other any suitable communication environments, and is not limited to the specific arrangements shown in Fig. 1.

Referring now to Fig. 2, it illustrates according to the flow chart of the method 200 of the transfer of data for communication system of the embodiment of the present invention.In these embodiments, described communication system can comprise UE, serve the serving BS broadcasts of described UE, and disturbs at least one interference BS of described UE.Can carry out at serving BS BS place as illustrated method in Fig. 2, this serving BS broadcasts can be macrocell BS or small-cell BS.

According to embodiments of the invention, this UE can the resource division information being sent by eNB at random or based on received measure CQI in subframe (subframe of blank type or normal type).UE can only feed back this CQI to serving BS broadcasts (if this survey bureau is limited to a certain subframe), or feedback CQI information and CQI measure sub-frame information to this BS.This serving BS broadcasts can determine whether received CQI can be applicable to CQI-and use subframe, for example, this serving BS broadcasts can based on dispose blank type subframe this at least one disturb the subframe bitmap of BS, determine whether the CQI receiving uses subframe corresponding to CQI-.If do not need CQI to adjust, the CQI of this serving BS broadcasts based on received sends data to this UE; And if need CQI to adjust, this serving BS broadcasts can be adjusted received CQI by several modes, for example, estimates that by the CQI based on received interference level obtains target CQI, the CQI that utilizes predetermined adjusted value adjustment to receive, or any other suitable method.According to embodiments of the invention, this at least one interference BS may be configured with at least one blank type subframe, that is, disturb BS to may be configured with the subframe of one or more blank types.It will be understood by those skilled in the art that in practice, this at least one interference BS that disposes blank type subframe may be configured with one or more blank type subframes.

At step S201, receive the CQI that measures subframe corresponding to CQI-from UE.

According to embodiments of the invention, this CQI-measures the type of subframe and can be specified by serving BS broadcasts, at step S201, only has CQI to receive from described UE, for obtaining described target CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can can't help serving BS broadcasts and specify, and can receive the CQI that CQI and indication CQI-measure the type of subframe from this UE and measure sub-frame information, for obtaining target CQI.

At step S202, obtain the target CQI that uses subframe corresponding to CQI-based on received CQI, to transfer data to this UE according to described target CQI.

According to embodiments of the invention, can obtain target CQI by several different methods.In one embodiment, can disturb the subframe bitmap of BS to determine whether the CQI that receives uses subframe corresponding to CQI-based at least one that disposes blank type subframe; And, can not correspond to CQI-in response to received CQI and use subframe, obtain described target CQI.In another embodiment, use subframe in response to received CQI corresponding to CQI-, the CQI receiving can directly be confirmed as target CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can be specified by serving BS broadcasts, and can determine that whether received CQI is corresponding to CQI-use subframe by obtaining the type of CQI-subframe based on subframe bitmap and judging that type that CQI-measures subframe is whether identical with the type of CQI-subframe.Use the type of subframe identical if CQI-measures the type of subframe with CQI-, can determine that received CQI uses subframe corresponding to CQI-; And, if measuring the type of subframe, CQI-use the type of subframe different from CQI-, can determine that received CQI does not correspond to CQI-and uses subframe.

According to embodiments of the invention, CQI-measures the type of subframe and can't help serving BS broadcasts and specify, and can determine whether the CQI receiving uses subframe corresponding to CQI-by following operation: measure sub-frame information based on the CQI from UE and obtain described CQI-and measure the type of subframe, obtain CQI-use the type of subframe and judge whether the type that described CQI-measures subframe uses the type of subframe identical with described CQI-based on subframe bitmap.Use subframe type identical if this CQI-measures the type of subframe with this CQI-, can determine that received CQI uses subframe corresponding to CQI-; And, if measuring the type of subframe, this CQI-use the type of subframe different from this CQI-, can determine that received CQI does not correspond to CQI-and uses subframe.

According to embodiments of the invention, communication system is TDD system.Do not correspond to CQI-in response to received CQI and use subframe, can obtain this target CQI by following operation: use the interference in subframe and calculate Signal to Interference plus Noise Ratio (SINR) in the received power at UE place based on CQI-; And SINR based on calculated determines target CQI.

According to embodiments of the invention, communication system is FDD system.Do not correspond to CQI-in response to received CQI and use subframe, can obtain this target CQI by following operation: the interference, the CQI-that measure in subframe based on CQI-use the interference in subframe and calculate SINR according to the measurement SINR of received CQI acquisition; And SINR based on calculated determines target CQI.

According to embodiments of the invention, communication system can be FDD system or TDD system.Do not correspond to CQI-in response to received CQI and use subframe, can obtain target CQI by following operation: obtain CQI adjusted value to adjust the CQI being received, and CQI and this this target of CQI adjustment calculation CQI based on received.According to embodiments of the invention, this CQI adjusted value can obtain by several modes, for example, and by adjust maximum and CQI adjustment minimum value based on historical CQI information acquisition CQI; And adjust minimum value from CQI and adjust in peaked scope and select a numerical value as this CQI adjusted value to CQI.

According to embodiments of the invention, before method also can be included in and receive CQI from UE as illustrated in Figure 2, send the step of specifying CQI-to measure the UE resource division information of the type of subframe to this UE.In this class embodiment, specify this CQI-to measure the type of subframe by serving BS broadcasts, afterwards, this UE measures CQI in the subframe of specified type, and the CQI of measurement is sent to its serving BS broadcasts.In this case, described serving BS broadcasts can not judge the subframe of described CQI corresponding to which kind, because the type is specified by himself.

According to embodiments of the invention, method also can comprise the step that transfers data to described UE based on described target CQI as illustrated in Figure 2.

Referring now to Fig. 3, it illustrates the flow chart of the method 300 of the transfer of data for communication system according to a further embodiment of the invention.In these embodiments, described communication system can comprise UE, be the serving BS broadcasts of described UE service, and disturb at least one interference BS of described UE.Method can be carried out at serving BS broadcasts place as illustrated in Figure 3.

In embodiment as illustrated in Figure 3, CQI-measures the type of subframe and can be specified by serving BS broadcasts.For example this serving BS broadcasts can be sent to UE by the resource division information of specifying CQI-to measure the type of subframe.Therefore, this UE can measure CQI in the subframe by this serving BS broadcasts specified type, and in the time that this serving BS broadcasts receives this CQI from this UE, it has known the type of this CQI-measurement subframe.

At step S301, the resource division information of specifying this CQI-to measure the type of subframe is sent to this UE.

According to the embodiment of this aspect, this resource division information can comprise the indication of indicating the CQI-being specified by serving BS broadcasts to measure the type of subframe.For example, can be set to " 0 " be blank (, disturbing the ABS of BS) to indicate this CQI-to measure subframe to this resource division information; And this resource division information can be set to " 1 " be normal to indicate this CQI-to measure subframe.As those skilled in the art can recognize, this resource division information is alternatively set to " 1 " to indicate blank type, and is set to " 0 " to indicate normal type.According to a further embodiment of the invention, this resource division information can be several other mode realize, for example, this resource division information is alternately set to "True" to indicate blank type, and is set to " vacation " to indicate normal type.

According to embodiments of the invention, UE and its serving BS broadcasts can pre-define the type of CQI-measurement subframe synergistically.In this case, do not need to send resource division information to this UE, because this serving BS broadcasts has been known the wherein type of the subframe of UE measurement CQI.

In step S302, only have CQI to be received from described UE, for obtaining target CQI.

According to embodiments of the invention, " only having CQI " refers to, and for described serving BS broadcasts, do not need to receive any other indication about the subframe of corresponding which kind of type of this CQI.As known to those skilled in the art, under LTE/LTE-A framework, except described CQI transmission, between UE and its serving BS broadcasts, can there are some communications, those communications not discussed herein.

At step S303, determine that the whether corresponding CQI-of the CQI receiving uses subframe.

According to embodiments of the invention, by serving BS broadcasts, for example, by the resource division information sending at step S301, specify CQI-to measure the type of subframe.By this mode, this serving BS broadcasts can at least one of subframe based on disposing blank type disturbs the subframe bitmap of BS to obtain this CQI-to use the type of subframe.In an embodiment of the present invention, this at least one interference BS disposes the subframe of at least one blank type, for example, and one or more ABS.Therefore, this serving BS broadcasts can be disturbed the subframe bitmap of BS to obtain CQI-based at least one that disposes one or more ABS and use the type of subframe.For example, if macrocell eNB disposes (multiple) ABS, the macrocell eNB of eNB from macrocell eNB obtains this information slightly, and do not disturb slight eNB and obtain from other.This serving BS broadcasts can judge whether the type of CQI-measurement subframe uses the type of subframe identical with CQI-.If so, flow process forwards step S307 to, and wherein serving BS broadcasts can determine that received CQI uses subframe corresponding to CQI-, and serving BS broadcasts does not need to adjust the CQI receiving.If not, flow process forwards step S304 to, and wherein this serving BS broadcasts determines that the CQI receiving does not correspond to CQI-and uses subframe, and obtains based on received CQI the target CQI that uses subframe corresponding to this CQI-.

According to embodiments of the invention, CQI-measures the type of subframe and can't help serving BS broadcasts and specify.By this mode, this serving BS broadcasts is measured sub-frame information based on the CQI from UE and is obtained this CQI-measurement subframe type, obtain CQI-based on subframe bitmap and use the type of subframe, and judge that this CQI-measures subframe type and whether uses the type of subframe identical with this CQI-.If so, this serving BS broadcasts can determine that received CQI uses subframe corresponding to CQI-, and serving BS broadcasts does not need to adjust the CQI receiving.If not, this serving BS broadcasts will determine that the CQI receiving does not correspond to CQI-and uses subframe, and obtains based on received CQI the target CQI that uses subframe corresponding to this CQI-.Below will consider that Fig. 4 discusses the details of these embodiment.

According to embodiments of the invention, can disturb the subframe bitmap of BS to obtain CQI-to use based at least one that disposes blank type subframe the type of subframe, thereby whether the type that CQI-measures subframe uses with CQI-, the type of subframe is identical can be judged by serving BS broadcasts.Can described at least one disturb BS each disturb BS place design subframe bitmap, and can based on dispose blank type subframe described at least one disturb the subframe bitmap of BS to determine that whether received CQI is corresponding to CQI-use subframe.Figure 10 illustrates according to the schematic diagram of the subframe bitmap of the embodiment of the present invention.In these embodiments, suppose that communication is for TDD system.

With reference to Figure 10, subframe bitmap comprises 10 bits, as indicated by 1001-1010, the type of each bit indication subframe, it is blank type subframe (1005,1010) that the bit that for example value is " 0 " can be indicated corresponding subframe, it is normal type subframe (1001,1006) that value can be indicated corresponding subframe for the bit of " 1 ", is worth that can to indicate this CQI of use in corresponding subframe (1002,1003,1004,1007,1008 and 1009) for the bit of " 2 " or " x " be inappropriate.Therefore, subframe bitmap illustrates the type of 10 subframes as shown in Figure 10.In Figure 10, channel type indication is down link (being expressed as " D "), up link (being expressed as " U ") or certain other types (being expressed as " S " (special)) corresponding to the channel of subframe.According to embodiments of the invention, because the major part of " S " subframe can be used as " D (down link) " subframe, the channel type of " S " subframe can be considered to " down link ".Especially, can find out respectively corresponding " D " channel type of bit 1001,1005,1006,1010.Due under TDD system, serving BS broadcasts will be used CQI in down link, thereby can in the subframe corresponding to channel type " D ", obtain target CQI.That is to say, serving BS broadcasts can judge that whether received CQI is corresponding to using subframe by the CQI-of bit 1001,1005,1006 or 1010 indications.

In one embodiment, the subframe that is normal type that serving BS broadcasts specifies CQI-to measure subframe, and the assumed value bit indication CQI-that is " 0 " to use subframe be blank type frame, and the bit that value is " 1 " indication CQI-use subframe is the frame of normal type.With reference to Figure 10, for the bit 1001 being worth for " 1 ", this serving BS broadcasts can determine that it is normal that CQI-uses subframe, and determines that afterwards the type of CQI-measurement subframe is used the type of subframe identical with CQI-.By this mode, this serving BS broadcasts can determine that at step S303 received CQI uses subframe corresponding to CQI-, and flow process can forward S307 to.Referring again to Figure 10, for the bit 1005 being worth for " 0 ", this serving BS broadcasts can determine that it is blank that this CQI-uses subframe, and determines that afterwards the type of CQI-measurement subframe is different from the type of CQI-use subframe.By this mode, this serving BS broadcasts can determine that the CQI receiving fails to use subframe corresponding to CQI-at step S303, and flow process can forward S304 to.

In another embodiment, it is the subframe of blank type that serving BS broadcasts specifies CQI-to measure subframe, and the assumed value bit indication CQI-that is " 0 " to use subframe be the frame of blank type, and the bit indication CQI-use subframe that value is " 1 " is the frame of normal type.With reference to Figure 10, the bit 1001 that is " 1 " for value, this serving BS broadcasts can determine that it is normal that this CQI-uses subframe, and the type that definite CQI-measures subframe is afterwards different from the type of this CQI-use subframe.By this mode, serving BS broadcasts can determine that the CQI receiving fails to use subframe corresponding to CQI-at step S303, and flow process can forward S304 to.Referring again to Figure 10, the bit 1005 that is " 0 " for value, this serving BS broadcasts can determine that it is blank that CQI-uses subframe, and determines that afterwards the type of CQI-measurement subframe is used the type of subframe identical with CQI-.By this mode, this serving BS broadcasts can determine that the CQI receiving uses subframe corresponding to CQI-at step S303, and flow process can forward S307 to.

According to embodiments of the invention, for FDD system, subframe bitmap (not shown) no longer comprises the bit that value is " 2 " or " x ", and it will be substituted by value " 0 " or " 1 ".In addition, be also applicable to this FDD system for the details of TDD system discussion.

At step S304, use the interference in subframe and calculate SINR in the received power at UE place based on CQI-.

According to embodiments of the invention, communication system can be TDD system or FDD system.In the embodiment show in figure 3, suppose that communication system is TDD system.In TDD system, can there be several modes to determine target CQI.For example, the SINR that this target CQI can calculate according to the CQI based on received obtains, or can consider that CQI adjusted value obtains based on received CQI.

In an embodiment according to the present invention, in TDD system, can determine target CQI according to SINR, this SINR uses interference in subframe and the received power at UE place to calculate based on CQI-, as shown in step S304 and S305.

According to embodiments of the invention, serving BS broadcasts can be small-cell BS, and this at least one interference BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, be the subframe of normal type if CQI-measures subframe, and correspondingly, it is the subframe of blank type that CQI-uses subframe, this CQI-uses the interference in subframe can comprise the interference from these one or more small-cell BS.For example, SINR (is expressed as " SINR _adj") can be calculated as follows:

${\mathrm{SINR}}_{\mathrm{adj}}=\frac{P_s}{P_{\mathrm{intf}\_\max }}---\left(1\right)$

Wherein P _sthe power being received by UE, P _{intf_max}carry out the interference of one or more small-cell BS of this UE of self-interference.In an embodiment of the present invention, can calculate P based on the following _{intf_max}: the path loss from this UE to these one or more small-cell BS, the shadow factor from this UE to these one or more small-cell BS, the transmitting power of these one or more small-cell BS, and channel information between this UE and this one or more small-cell BS.For example, P _{intf_max}can be calculated as follows:

$P_{\mathrm{intf}\_\max }=\underset{j}{\mathrm{\Σ}}\mathrm{Ind}\_\mathrm{CQIUseInt}{f}_j*{\mathrm{PL}}_j*{\mathrm{SF}}_j*{\mathrm{Pt}}_j*{\left|\right|H_j\left|\right|}_F^2---\left(2\right)$

Wherein Ind_CQIUseIntf _jbe an indication, its indicate j disturb BS whether be considered (for example, and if in the case of serving BS broadcasts be small-cell BS CQI-to measure subframe be the subframe of normal type, it can be each BS of these one or more small-cell BS; Therefore, disturb BS, Ind_CQIUseIntf for each small-cell _jcan be set to " 1 "; And disturb BS, Ind_CQIUseIntf for each macrocell _jcan be set to " 0 "); PL _jthe path loss of indication from UE to j interference BS; SF _jthe shadow factor of indication from UE to j interference BS; Pt _jindicate j power that disturbs BS; H _jindication is at UE and j the channel information disturbing between BS; And || || _frepresent Fu Luobin Nice norm (Frobenius norm).

Referring again to embodiment above, in the situation that serving BS broadcasts is small-cell BS, if it is the subframe of blank type that CQI-measures subframe, and correspondingly, it is the subframe of normal type that CQI-uses subframe, uses interference in subframe can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS at CQI-.For example, SINR (is expressed as " SINR _adj") can be calculated as follows:

${\mathrm{SINR}}_{\mathrm{adj}}=\frac{P_s}{P_{\mathrm{intf}\_\max }+P_{\mathrm{intf}\_\mathrm{meas}}}---\left(3\right)$

Wherein P _sthe power being received by UE, P _{intf_max}carry out the interference of these one or more macrocell BS of self-interference UE, P _{intf_meas}carry out the interference of these one or more small-cell BS of self-interference UE.In an embodiment of the present invention, can calculate P based on the following _{intf_max}: the path loss from UE to these one or more macrocell BS, the shadow factor from UE to these one or more macrocell BS, the transmitting power of these one or more macrocell BS, and channel information between UE and this one or more macrocell BS.For example, can calculate P according to formula (2) _{intf_max}.In an embodiment of the present invention, can derive P according to received CQI _{intf_meas}.

According to embodiments of the invention, serving BS broadcasts can be macrocell BS, and this at least one interference BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, be the subframe of normal type if this CQI-measures subframe, and correspondingly this CQI-use subframe is the subframe of blank type, this CQI-uses the interference of subframe can comprise the interference from these one or more macrocell BS.For example, can calculate SINR according to formula (1), but it may be noted that in this case P _{intf_max}for carrying out the interference of one or more macrocell BS of this UE of self-interference.Can calculate P according to formula (2) _{intf_max}.

Referring again to embodiment above, in the situation that serving BS broadcasts may be macrocell BS, if it is the subframe of blank type that CQI-measures subframe, and correspondingly, it is the subframe of normal type that CQI-uses subframe, uses interference in subframe can comprise from the interference of one or more small-cell BS and from the interference of one or more macrocell BS at CQI-.In this case, can calculate SINR according to formula (3) and (be expressed as " SINR _adj").

According to a further embodiment of the invention, do not rely on the type of communication system, the another way of adjusting CQI is that CQI is increased or reduce certain numerical value.For example, can be used for adjusting by acquisition the CQI adjusted value (for example, being expressed as " Δ CQI ") of received CQI, and CQI and this CQI adjustment calculation target CQI based on received, determine this target CQI.

Can obtain CQI adjusted value by variety of way.For example, can adjust maximum and CQI adjustment minimum value based on historical CQI information acquisition CQI; Then adjusting minimum value from this CQI adjusts and in peaked scope, selects this CQI adjusted value to this CQI.

According to embodiments of the invention, historical CQI information can comprise the CQI corresponding to blank type subframe of previous acquisition, or corresponding to those CQI of normal type subframe.Based on these CQI, can calculate every pair of difference between interim adjacent C QI.According to embodiments of the invention, maximum difference can be confirmed as CQI and (for example adjust maximum, be expressed as " Δ CQI_max "), and minimum difference can be confirmed as CQI adjustment minimum value (for example, being expressed as " Δ CQI_min ").Afterwards, can be from the random CQI adjusted value Δ CQI that selects in the scope between Δ CQI_min and Δ CQI_max, that is:

ΔCQI∈[ΔCQI_min，ΔCQI_max] (4)

According to embodiments of the invention, any value of Δ CQI within the scope of can be from Δ CQI_min to Δ CQI_max.For example, Δ CQI can equal the median between Δ CQI_min and Δ CQI_max.Again for example, can select Δ CQI according to the distribution of all values between Δ CQI_min and Δ CQI_max.It will be understood by those skilled in the art that these examples are only illustrative rather than definitive thereof, and select any other suitable numerical value in can be from Δ CQI_min to the scope Δ CQI_max.

According to embodiments of the invention, if measure CQI in the subframe of normal type, and correspondingly, CQI-uses the subframe that subframe is blank type, can obtain target CQI and (be expressed as " CQI _adj") as follows:

CQI _adj=CQI _mwherein CQI of+Δ CQI (5) _mrepresent the CQI that measures and received by serving BS broadcasts by UE.

According to embodiments of the invention, if measure CQI in the subframe of blank type, and correspondingly, it is the subframe of normal type that CQI-uses subframe, can obtain target CQI and (be expressed as equally " CQI _adj") as follows:

CQI _adj=CQI _mwherein CQI of-Δ CQI (6) _mrepresent the CQI that measures and received by serving BS broadcasts by UE.

At step S305, the SINR based on calculated determines this target CQI.

Can determine CQI based on SINR by several existing methods.For example, technical staff can consider calculated SINR, by inquiry CQI-SINR conversion table, obtains target CQI.

At step S306, based on this target, CQI sends data to this UE.

At step S307, the CQI receiving is confirmed as this target CQI.

Referring now to Fig. 4, it illustrates the flow chart of the method 400 of the transfer of data for communication system according to a further embodiment of the invention.In these embodiments, communication system can comprise UE, serving BS broadcasts for this UE service, and disturb this UE at least one disturb BS.Method as illustrated in Fig. 4 can be carried out at serving BS broadcasts place.

At step S401, the CQI that receives the type of CQI and indication CQI-measurement subframe from described UE measures sub-frame information.

Different from Fig. 3 illustrated embodiment, in embodiment as illustrated in Fig. 4, serving BS broadcasts can not specify CQI-to measure the type of subframe.Therefore, serving BS broadcasts will not send resource division information to UE, and this UE can at random measure CQI.For the type of notification service BS CQI-measurement subframe, this UE can measure sub-frame information by CQI together with measured CQI and be sent to this serving BS broadcasts.

According to embodiments of the invention, CQI measures sub-frame information can comprise the indication of indicating the CQI-being specified by serving BS broadcasts to measure the type of subframe.For example, CQI measures sub-frame information can be set to " 0 " is blank (disturbing the ABS of BS) to indicate described CQI-to measure subframe; And CQI measure sub-frame information can be set to " 1 " with indicate CQI-measure subframe be normal.As those skilled in the art will appreciate that, CQI measures sub-frame information and is alternately set to " 1 " to indicate blank type, and is set to " 0 " to indicate normal type.The further embodiment according to the present invention, can realize CQI by several other modes and measure sub-frame information, and for example, CQI measures sub-frame information and is alternately set to "True" to indicate blank type, and is set to " vacation " to indicate normal type.

In step S402, determine whether the CQI receiving uses subframe corresponding to CQI-.

According to embodiments of the invention, can disturb the subframe bitmap of BS to determine that the whether corresponding CQI-of the CQI that receives uses subframe based at least one that disposes blank type subframe.In one embodiment, UE measures arbitrarily CQI.With reference to Figure 10, it is blank type subframe that the bit indication CQI-that assumed value is " 0 " uses subframe, and the bit indication CQI-use subframe that value is " 1 " is normal type subframe.Bit 1001 for value for " 1 ", serving BS broadcasts can receive and comprise that the CQI of value " 1 " measures sub-frame information, and by comparing these two numerical value, the subframe that can determine this CQI is normal, and determine that afterwards this CQI-measures the type of subframe, and CQI-measurement subframe is the subframe of normal type.In this way, at step S402, serving BS broadcasts can determine that received CQI uses subframe corresponding to CQI-, and flow process can forward S406 to.Referring again to Figure 10, the bit 1005 for value for " 0 ", serving BS broadcasts can determine that it is blank that CQI-uses subframe.Comprise when serving BS broadcasts receives the CQI measurement sub-frame information that value is " 1 ", it is these two numerical value relatively, and the type that definite this CQI-measures subframe is afterwards different from the type of this CQI-use subframe.By this mode, at step S402, serving BS broadcasts can determine that received CQI fails to use subframe corresponding to CQI-, and flow process turns to S403.

At step S403, measure based on CQI-the measurement SINR that interference, CQI-in subframe use the interference in subframe and obtain according to received CQI (FDD system), calculate SINR.

According to embodiments of the invention, communication system can be TDD system or FDD system.In the embodiment show in figure 4, suppose that communication system is FDD system.In FDD system, can there be several modes to determine target CQI.For example, the SINR that can calculate according to the CQI based on received obtains target CQI, or can consider that CQI adjusted value obtains target CQI based on received CQI.

In an embodiment according to the present invention, in FDD system, can determine target CQI according to SINR, can calculate interference, the CQI-that this SINR:CQI-measures in subframe based on the following and use the interference in subframe, and measurement SINR from obtaining according to received CQI.For example, can calculate SINR and (be expressed as " SINR _adj") as follows:

${\mathrm{SINR}}_{\mathrm{adj}}=\frac{P_{\mathrm{intf}2\_\max }}{P_{\mathrm{intf}1\_\max }}*{\mathrm{SINR}}_{\mathrm{meas}}---\left(7\right)$

Wherein P _{intf1_max}for CQI-measures the interference in subframe; P _{intf2_max}for CQI-uses the interference in subframe; And SINR _measbe measured value, it can obtain according to received CQI.

According to embodiments of the invention, serving BS broadcasts can be small-cell BS, and at least one disturbs BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, be the subframe of normal type if CQI-measures subframe, this CQI-measures the interference (P in subframe _{intf1_max}) can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS, and use the interference (P in subframe at this CQI- _{intf2_max}) can comprise the interference from these one or more small-cell BS.

Referring again to embodiment above, in the situation that serving BS broadcasts can be small-cell BS, be the subframe of blank type if CQI-measures subframe, this CQI-measures the interference (P in subframe _{intf1_max}) can comprise the interference from one or more small-cell BS, and use the interference (P in subframe at this CQI- _{intf2_max}) can comprise from the interference of these one or more small-cell BS and from the interference of one or more macrocell BS.

According to embodiments of the invention, serving BS broadcasts can be macrocell BS, and at least one disturbs BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, if it is the subframe of normal type that this CQI-measures subframe, this CQI-measures interference in subframe and can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS, and CQI-uses the interference in subframe can comprise the interference from these one or more macrocell BS.

Referring again to embodiment above, in the situation that serving BS broadcasts can be macrocell BS, if it is the subframe of blank type that CQI-measures subframe, the interference that this CQI-measures in subframe can comprise the interference from one or more macrocell BS, and CQI-uses interference in subframe can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS.

According to embodiments of the invention, can calculate from the interference of this one or more macrocell BS based on the following: the path loss from UE to these one or more macrocell BS, the shadow factor from UE to these one or more macrocell BS, the transmitting power of these one or more macrocell BS, and channel information between UE and this one or more macrocell BS; And can calculate from the interference of this one or more small-cell BS based on the following: the path loss from UE to these one or more small-cell BS, the shadow factor from UE to these one or more small-cell BS, the transmitting power of these one or more small-cell BS, and channel information between UE and this one or more small-cell BS.According to embodiments of the invention, measure the interference (P in subframe at described CQI- _{intf1_max}) or described CQI-use the interference (P in subframe _{intf1_max}) can calculate according to formula (2).

According to a further embodiment of the invention, do not rely on the type of communication system, be that CQI is increased or reduce certain numerical value for adjusting the other method of CQI.For example, can be used for adjusting by acquisition CQI adjusted value (for example, being expressed as " Δ CQI ") and the CQI based on received and this CQI adjustment calculation target CQI of received CQI, determine described target CQI.

At step S404, the SINR based on calculated determines target CQI.

This step is similar to step S305, and all details are also applicable.

At step S405, based target CQI transfers data to described UE.

At step S406, the CQI receiving is confirmed as target CQI.

Referring now to Fig. 5, it illustrates according to the flow chart of the method 500 of the transfer of data for communication system of the embodiment of the present invention.In these embodiments, communication system can comprise UE, serving BS broadcasts for this UE service, and at least one disturbs the interference BS of this UE.Method can be carried out at UE place as illustrated in Figure 5.

At step S501, measure the CQI that measures subframe corresponding to CQI-.

According to embodiments of the invention, CQI-measures the type of subframe and can be specified by serving BS broadcasts.In this case, can measure described CQI by following operation: receive the resource division information of the type of specifying CQI-to measure subframe and measure the CQI that measures subframe corresponding to the CQI-of specified type from serving BS broadcasts.

According to embodiments of the invention, CQI-measures the type of subframe and can can't help serving BS broadcasts and specify.In this case, UE at random measures CQI, that is to say, CQI-measures subframe and can be blank or normal.

At step S502, measured CQI is sent to serving BS broadcasts, thereby serving BS broadcasts obtains the target CQI that uses subframe corresponding to CQI-based on measured CQI, to transfer data to UE according to this target CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can be specified by serving BS broadcasts.In this case, UE can only be sent to serving BS broadcasts by this CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can can't help serving BS broadcasts and specify.In this case, UE can send CQI that indication CQI-measures the type of subframe and measure sub-frame information and measured CQI to serving BS broadcasts.

According to embodiments of the invention, in Fig. 4, illustrated method also can comprise the step that receives the data of based target CQI transmission from serving BS broadcasts.According to embodiments of the invention, this target CQI can obtain by method of the present invention, such as the method for exemplarily describing in Fig. 2-4.

Referring now to Fig. 6, it illustrates the flow chart of the method 600 of the transfer of data for communication system according to a further embodiment of the invention.In these embodiments, communication system can comprise UE, serving BS broadcasts for this UE service, and disturb this UE at least one disturb BS.Method can be carried out at UE place as illustrated in Figure 6.

In embodiment as illustrated in Fig. 6, CQI-measures the type of subframe and can be specified by serving BS broadcasts.For example, serving BS broadcasts can send the resource division information of specifying CQI-to measure the type of subframe to UE.Therefore, UE can measure CQI in the subframe of the type of being specified by serving BS broadcasts, and in the time that serving BS broadcasts receives from the CQI of UE, and it has known CQI-and measure the type of subframe.

At step S601, receive the resource division information of specifying this CQI-to measure the type of subframe from serving BS broadcasts.

According to embodiments of the invention, resource division information can comprise the indication that indication is measured the type of subframe by the specified CQI-of serving BS broadcasts.For example, this resource division information can be set to " 0 " with indicate CQI-measure subframe be blank (disturbing the ABS of BS); And it is normal to indicate CQI-to measure subframe that this resource division information can be set to " 1 ".As those skilled in the art can recognize, resource division information is alternatively set to " 1 ", "True" or certain other suitable numerical value to indicate blank type, and is set to " 0 ", " vacation " or certain other suitable numerical value with indication normal type.

At step S602, measure the CQI that measures subframe corresponding to the CQI-of specified type.

According to embodiments of the invention, there is the existing method for measuring CQI, it is known to those skilled in the art, therefore omits its details herein.

At step S603, only have CQI to be sent to serving BS broadcasts.

According to embodiments of the invention, " only having CQI " refers to UE does not need to receive any other indication corresponding to the subframe of what type about CQI.As known to those skilled, under LTE/LTE-A framework, except CQI transmission, between UE and its serving BS broadcasts, can there are some communications, and those communications are not discussed herein.

At step S604, receive from serving BS broadcasts the data that based target CQI transmits.

According to embodiments of the invention, after receiving the CQI sending at step S603, serving BS broadcasts can obtain the target CQI that uses subframe corresponding to CQI-based on measured CQI, to transfer data to UE according to this target CQI.In an embodiment of the present invention, can, by method of the present invention, obtain this target CQI such as the method for exemplarily describing in Fig. 2-4.

Referring now to Fig. 7, it illustrates the flow chart of the method 700 of the transfer of data for communication system according to a further embodiment of the invention.In these embodiments, communication system can comprise UE, serving BS broadcasts for UE service, and disturb UE at least one disturb BS.As illustrated method in Fig. 7 can be carried out at UE place.

Different from illustrated embodiment in Fig. 6, in embodiment as illustrated in Fig. 7, serving BS broadcasts can not specify CQI-to measure the type of subframe.Therefore, serving BS broadcasts will not send resource division information to UE, and this UE can at random measure CQI.For this CQI-of notification service BS measures the type of subframe, this UE can send CQI and measure sub-frame information and measured CQI to serving BS broadcasts.

At step S701, measure the CQI that measures subframe corresponding to CQI-.

In this step, UE can at random measure corresponding to the CQI of blank type subframe or corresponding to the CQI of normal type subframe.That is to say, depend on the measurement of UE, the type that CQI-measures subframe can be blank or normal.

At step S702, the CQI measurement sub-frame information that CQI and indication CQI-measure the type of subframe is sent to serving BS broadcasts.

According to embodiments of the invention, CQI measures the indication that sub-frame information can comprise that indication is measured the type of subframe by the specified CQI-of serving BS broadcasts.For example, CQI measures sub-frame information can be set to " 0 " is blank (disturbing the ABS of BS) to indicate this CQI-to measure subframe; And this CQI measures sub-frame information, and can be set to " 1 " be normal to indicate this CQI-to measure subframe.The more details that the CQI discussing in step S401 measures sub-frame information are all suitable for for step S702.

At step S703, receive the data of based target CQI from serving BS broadcasts transmission.

According to embodiments of the invention, after receiving the CQI and CQI measurement sub-frame information sending at step S702, serving BS broadcasts can obtain the target CQI that uses subframe corresponding to CQI-based on measured CQI, to transfer data to UE according to this target CQI.In an embodiment of the present invention, can, by method of the present invention, such as the method for exemplarily describing, obtain target CQI in Fig. 2-4.

Referring now to Fig. 8, it illustrates according to an embodiment of the invention the block diagram for the device 800 of the transfer of data of communication system.In these embodiments, communication system can comprise UE, serving BS broadcasts for UE service, and disturb UE at least one disturb BS.

According to embodiments of the invention, device 800 can comprise receiving element 810 and obtain unit 820.According to embodiments of the invention, receiving element 810 can be configured to receive the CQI (CQI) corresponding to CQI-measurement subframe from UE; And obtain unit 820 and can be configured to obtain based on received CQI the target CQI that uses subframe corresponding to CQI-, to transfer data to UE according to this target CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can be specified by serving BS broadcasts, and receiving element 810 can comprise: be configured to receive only from UE, for obtaining the device of CQI of target CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can can't help serving BS broadcasts and specify, and receiving element 810 can comprise: be configured to receive from UE the CQI that CQI and indication CQI-measure the type of subframe and measure sub-frame information to obtain the device of target CQI.

According to embodiments of the invention, obtaining unit 820 can comprise: determining device, and at least one being configured to based on disposing blank type subframe disturbed the subframe bitmap of BS, determines whether the CQI receiving uses subframe corresponding to CQI-; And acquisition device, be configured to not correspond to CQI-in response to received CQI and use subframe, obtain target CQI.

According to embodiments of the invention, CQI-measures the type of subframe and can be specified by serving BS broadcasts, and determining device can comprise: the device that is configured to obtain based on subframe bitmap the type of CQI-use subframe; Be configured to judge that CQI-measures whether identical with the type of the CQI-use subframe device of type of subframe; Be configured to, in the time that the type of CQI-measurement subframe is identical with the type of CQI-use subframe, determine that the CQI receiving uses the device of subframe corresponding to CQI-; And if when being configured to CQI-and measuring the type of subframe and be different from CQI-and use the type of subframe, determine that the CQI receiving does not correspond to CQI-and use the device of subframe.

According to embodiments of the invention, CQI-measures the type of subframe and can can't help serving BS broadcasts and specify, and determining device can comprise: the device that is configured to measure sub-frame information and obtain CQI-and measure based on the CQI from UE the type of subframe; Be configured to obtain based on subframe bitmap the device of the type of CQI-use subframe; Be configured to judge that CQI-measures whether identical with the type of the CQI-use subframe device of type of subframe; Be configured to, in the time that the type of CQI-measurement subframe is identical with the type of CQI-use subframe, determine that the CQI receiving uses the device of subframe corresponding to CQI-; And be configured in the time that the type of CQI-measurement subframe is different from the type of CQI-use subframe, determine that the CQI receiving does not correspond to the device of CQI-use subframe.

According to embodiments of the invention, communication system can be TDD system, and wherein said acquisition device can comprise: be configured to based on the interference of CQI-in subframe and calculate the device of Signal to Interference plus Noise Ratio (SINR) in the received power at UE place; And be configured to determine based on calculated SINR the device of target CQI.

According to embodiments of the invention, in TDD system, serving BS broadcasts can be small-cell BS and at least one disturbs BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, be normal type subframe if CQI-measures subframe, CQI-uses the interference in subframe can comprise the interference from these one or more small-cell BS; And, be blank type subframe if CQI-measures subframe, CQI-uses the interference in subframe can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS.

According to embodiments of the invention, in TDD system, serving BS broadcasts can be macrocell BS, and at least one disturbs BS can comprise one or more macrocells and/or one or more small-cell BS.In this case, be normal type subframe if CQI-measures subframe, use the interference in subframe can comprise the interference from one or more macrocell BS at CQI-; And wherein, be blank type subframe if CQI-measures subframe, use interference in subframe can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS at CQI-.

According to embodiments of the invention, communication system can be FDD system, and this acquisition device can comprise: be configured to measure SINR that interference, CQI-in subframe use interference in subframe and measurement and calculate based on CQI-the device of Signal to Interference plus Noise Ratio (SINR), wherein obtain the SINR of this measurement according to received CQI; And be configured to determine based on calculated SINR the device of target CQI.

According to embodiments of the invention, in FDD system, serving BS broadcasts can be small-cell BS, and at least one disturbs BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, if it is normal type subframe that CQI-measures subframe, CQI-measures interference in subframe and can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS, and CQI-uses the interference in subframe can comprise the interference from one or more small-cell BS; And, if it is blank type subframe that CQI-measures subframe, the interference that CQI-measures in subframe can comprise the interference from these one or more small-cell BS, and CQI-uses interference in subframe can comprise from the interference of one or more small-cell BS and from the interference of one or more macrocell BS.

According to embodiments of the invention, in FDD system, serving BS broadcasts can be macrocell BS, and at least one disturbs BS can comprise one or more macrocell BS and/or one or more small-cell BS.In this case, if it is normal type subframe that CQI-measures subframe, CQI-measures interference in subframe and can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS, and uses the interference in subframe can comprise the interference from these one or more macrocell BS at CQI-; And, if it is blank type subframe that CQI-measures subframe, the interference of measuring in subframe at CQI-can comprise the interference from these one or more macrocell BS, and CQI-uses the interference of subframe can comprise from the interference of these one or more small-cell BS and from the interference of this one or more macrocell BS.

According to embodiments of the invention, can calculate the interference from one or more macrocell BS based on the following: the transmitting power of the path loss from UE to one or more macrocell BS, the shadow factor from UE to one or more macrocell BS, one or more macrocell BS and the channel information UE and one or more macrocell BS.

According to embodiments of the invention, can calculate the interference from one or more small-cell BS based on the following: the transmitting power of the path loss from UE to one or more small-cell BS, the shadow factor from UE to one or more small-cell BS, one or more small-cell BS and the channel information UE and one or more small-cell BS.

According to embodiments of the invention, this acquisition unit can comprise: be configured to obtain CQI adjusted value to adjust the device of the CQI being received; And be configured to the device of CQI based on received and this CQI adjustment calculation target CQI.

According to embodiments of the invention, be configured to obtain CQI adjusted value and can comprise with the device of adjusting the CQI being received: the device that is configured to adjust based on historical CQI information acquisition CQI maximum and CQI adjustment minimum value; And be configured to adjust in peaked scope and select a numerical value using the device as this CQI adjusted value to this CQI from this CQI adjustment minimum value.

According to embodiments of the invention, obtain unit 820 and also comprise: be configured to use subframe in response to received CQI corresponding to CQI-, received CQI be defined as to the device of target CQI.

According to embodiments of the invention, device 800 also can comprise transmitting element, is configured to the resource division information of specifying CQI-to measure the type of subframe to be sent to UE.

According to embodiments of the invention, device 800 also can comprise: the transmission unit that is configured to based target CQI and transfers data to UE.

It may be noted that device 800 can be configured to realize as with reference to the described function in Fig. 2-4.Therefore, can be applicable in the corresponding component of device 800 for the feature of any method discussion of method 200,300 and 400.The parts that also it may be noted that device 800 can embody by hardware, software, firmware and/or its combination in any.For example, the parts of device 800 can be realized by circuit, processor or any other suitable selection equipment respectively.Those skilled in the art will recognize that previously described example is only illustrative rather than definitive thereof.

In embodiment more of the present disclosure, device 800 comprises at least one processor.For example, be applicable to described at least one processor of using in conjunction with embodiment of the present disclosure, in the mode of example, can comprise known or exploitation in future, general and application specific processor the two.Device 800 also comprises at least one memory.This at least one memory can comprise for example semiconductor memory apparatus, for example RAM, ROM, EPROM, EEPROM and flash memory device.This at least one memory can be used to store the program of computer executable instructions.This program can be used senior and/or rudimentary comply with or explainable program language is write.According to embodiment, computer executable instructions can be configured to, and impels device 800 at least to carry out according to any method of method 200,300 and 400 discussed above together with this at least one processor.

Referring now to Fig. 9, it illustrates the block diagram of the device 900 of the transfer of data for communication system according to a further embodiment of the invention.In these embodiments, this communication system can comprise UE, be the serving BS broadcasts of UE service and at least one interference BS of interference UE.

According to embodiments of the invention, device 900 can comprise: measuring unit 910, is configured to measure the CQI (CQI) of measuring subframe corresponding to CQI-; And transmitting element 920, be configured to the CQI of measurement to be sent to serving BS, make serving BS determine the target CQI that uses subframe corresponding to CQI-based on measured CQI, to transfer data to UE according to this target CQI.

According to embodiments of the invention, measuring unit 910 can comprise: be configured to receive the device of specifying CQI-to measure the resource division information of the type of subframe from serving BS broadcasts; And be configured to measure the device of measuring the CQI of subframe corresponding to the CQI-of specified type.

According to embodiments of the invention, can be specified by serving BS broadcasts the type of CQI-measurement subframe, and transmitting element 920 can comprise: dispensing device, is configured to only send CQI to serving BS broadcasts.

According to embodiments of the invention, CQI-measures the type of subframe and can can't help serving BS broadcasts and specify, and transmitting element 920 can comprise: dispensing device, is configured to send to serving BS broadcasts the CQI that CQI and indication CQI-measure the type of subframe and measures sub-frame information.

According to embodiments of the invention, device 900 can also comprise: receiving element, is configured to receive from serving BS broadcasts the data that based target CQI transmits.

It may be noted that device 900 can be configured to realize as with reference to the described function in Fig. 5-7.Therefore the feature of, discussing for any method of method 500,600 and 700 may be used in the corresponding component of device 900.The parts that also it may be noted that device 900 can embody by hardware, software, firmware and/or its any combination.For example, the parts of device 900 can be realized by circuit, processor or any other suitable selection equipment respectively.One of skill in the art will appreciate that above-mentioned example is only illustrative rather than definitive thereof.

In embodiment more of the present disclosure, device 900 comprises at least one processor.In the mode of example, described at least one processor that is applicable to using in conjunction with embodiment of the present disclosure can comprise known or the general and application specific processor of exploitation in future the two.Device 900 also comprises at least one memory.For example, this at least one memory can comprise for example semiconductor memory apparatus, for example RAM, ROM, EPROM, EEPROM and flash memory device.This at least one memory can be used to store the program of computer executable instructions.This program can be used senior and/or rudimentary comply with or explainable program language is write.According to embodiment, computer executable instructions can be configured at least carry out according to any method of method 500,600 and 700 discussed above with impelling device 900 together with this at least one processor.

Consider above, one of skill in the art will appreciate that and utilize method and/or device according to an embodiment of the invention, it is no longer enforceable that multiple CQI measure.

Based on description above, one of skill in the art will appreciate that the disclosure may be embodied in device, method or computer program.Usually, various exemplary embodiments can realize by hardware or special circuit, software, its combination in any of logic OR.For example, hardware implementation can be passed through in some aspects, and firmware or implement software can be passed through in other aspects, and this software can be carried out by controller, microprocessor or other computing equipments, but the disclosure is not limited to this.Although the each side of example embodiment of the present disclosure can be illustrated or be described as block diagram, flow chart and adopt some other diagrammatic representation, but easily understand, as nonrestrictive example, these frames described herein, device, system, technology or method can combine to realize by some of hardware, software, firmware, special circuit or logic, common hardware or controller or other computing equipments or they.

Each frame shown in Fig. 2-7 can be counted as method step and/or regard the operation being caused by the operation of computer program code as, and/or regards multiple logic circuit components that are configured to the coupling of carrying out correlation function as.At least some aspects of exemplary embodiment of the present disclosure can be put into practice in various parts, such as integrated circuit (IC) chip and module, and exemplary embodiment of the present disclosure can realize by device, this device can be presented as the integrated circuit, FPGA or the ASIC that can be configured to according to exemplary embodiment operation of the present disclosure.

Although this specification comprises many details that specifically realize, these should not be understood to the restriction of the scope to any open content that maybe can be required protection, and should be understood to the description of the feature to specific disclosed specific or special embodiment.In the context of the embodiment separating, some feature of describing in the context of different embodiment in this specification also can realize in combination in single embodiment.On the contrary, the various features of describing in the context of single embodiment also can realize individually or in the mode of any suitable sub-portfolio in multiple embodiment.In addition; although feature can be described as the mode effect with some combination above; even at first by so claimed; in some cases; one or more features from combination required for protection can be deleted from this combination, and combination required for protection can be directed to the distortion of sub-portfolio or sub-portfolio.

Similarly, although describe operation by specific order in the drawings, this should not be understood to require these operations by shown in particular order or sequencing operation, or require all illustrated operations to be performed to obtain the result of expectation.In some cases, multitask and parallel processing are favourable.In addition, the separation of the various system units in above-described embodiment should not be understood to need in all embodiments this class to separate, and need to understand, described program assembly and system can be in general manner by together be integrated in single software product, or be packaged as multiple software products.

Consider foregoing description, in the time reading by reference to the accompanying drawings, the various modifications of aforementioned exemplary embodiment of the present disclosure, adaptation to persons skilled in the relevant art, can become apparent.Any and all modifications will fall in the scope of non-limiting and exemplary embodiment of the present disclosure.In addition, those skilled in the art are other embodiment of the present disclosure that expect providing herein, what they had benefited from that these embodiment of the present disclosure have describe above and relevant drawings in the instruction that provides.

Therefore, it will be understood that, embodiment of the present disclosure is not limited to disclosed specific embodiment, and revise and other embodiment be intended to be included in the scope of appended claim.Although used particular term herein, they only use in general and descriptive meaning, but not for restriction.

Claims (46)

1. the method for the transfer of data of communication system, described communication system comprise subscriber equipment (UE), for the serving BS (BS) of described UE service and disturb described UE at least one disturb BS, wherein said method comprises:

Receive the CQI corresponding to CQI (CQI)-measurement subframe from described UE; And

Described CQI based on receiving obtains the target CQI that uses subframe corresponding to CQI-, to send data to described UE according to described target CQI.

2. method according to claim 1, wherein said CQI-measures the type of subframe and is specified by described serving BS broadcasts, and wherein receives corresponding to the CQI of CQI-measurement subframe and comprise from described UE:

Only receive described CQI from described UE, for obtaining described target CQI.

3. method according to claim 1, wherein said CQI-measures the type of subframe and is not specified by described serving BS broadcasts, and wherein receives corresponding to the CQI of CQI-measurement subframe and comprise from described UE:

The CQI that receives described CQI and indicate described CQI-to measure the described type of subframe from described UE measures sub-frame information, for obtaining described target CQI.

4. method according to claim 1, wherein the described CQI based on receiving obtains corresponding to CQI-and uses the target CQI of subframe to comprise:

Based on be configured with blank type subframe described at least one disturb the subframe bitmap of BS, determine that whether the described CQI receiving is corresponding to described CQI-use subframe; And

Do not correspond to described CQI-in response to the described CQI receiving and use subframe, obtain described target CQI.

5. method according to claim 4, wherein said CQI-measures the described type of subframe and is specified by described serving BS broadcasts, and wherein based on be configured with blank type subframe described at least one disturb the subframe bitmap of BS, determine whether the described CQI receiving comprises corresponding to described CQI-use subframe:

Obtain the described type of described CQI-use subframe based on described subframe bitmap;

Whether the described type that judges described CQI-measurement subframe uses the described type of subframe identical with described CQI-;

Use the described type of subframe identical if described CQI-measures the described type of subframe with described CQI-, determine that the described CQI receiving uses subframe corresponding to described CQI-; And

Do not use the described type of subframe identical with described CQI-if described CQI-measures the described type of subframe, determine that the described CQI receiving does not correspond to described CQI-and uses subframe.

6. method according to claim 4, wherein said CQI-measures the described type of subframe and is not specified by described serving BS broadcasts, and wherein based on be configured with blank type subframe described at least one disturb the subframe bitmap of BS, determine that the whether corresponding described CQI-use subframe of the described CQI receiving comprises:

CQI measurement sub-frame information based on from described UE obtains the described type of described CQI-measurement subframe;

Obtain the described type of described CQI-use subframe based on described subframe bitmap;

Whether the described type that judges described CQI-measurement subframe uses the described type of subframe identical with described CQI-;

Use the described type of subframe identical if described CQI-measures the described type of subframe with described CQI-, determine that the described CQI receiving uses subframe corresponding to described CQI-; And

Do not use the described type of subframe identical with described CQI-if described CQI-measures the described type of subframe, determine that the described CQI receiving does not correspond to described CQI-and uses subframe.

7. method according to claim 4, wherein said communication system is TDD system, does not wherein correspond to described CQI-in response to the described CQI receiving and uses subframe, obtains described target CQI and comprises:

Calculate Signal to Interference plus Noise Ratio (SINR) based on described CQI-with the interference in subframe and in the received power at described UE place; And

Described SINR based on calculating determines described target CQI.

8. method according to claim 7, wherein said serving BS broadcasts is small-cell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-uses the described interference in subframe to comprise the interference from described one or more small-cell BS; And

If wherein described CQI-to measure subframe be blank type subframe, described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

9. method according to claim 7, wherein said serving BS broadcasts is macrocell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-uses the described interference in subframe to comprise the interference from described one or more macrocell BS; And

If wherein described CQI-to measure subframe be blank type subframe, described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

10. method according to claim 4, wherein said communication system is FDD system, does not wherein correspond to described CQI-in response to the described CQI receiving and uses subframe, obtains described target CQI and comprises:

The SINR of the interference in interference, described CQI-use subframe based in described CQI-measurement subframe and the measurement obtaining from the described CQI receiving, calculates Signal to Interference plus Noise Ratio (SINR); And

Described SINR based on calculating determines described target CQI.

11. methods according to claim 10, wherein said serving BS broadcasts is small-cell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-measures described interference in subframe and comprises from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS, and described CQI-uses the described interference in subframe to comprise the interference from described one or more small-cell BS; And

If wherein described CQI-measurement subframe is blank type subframe, the described interference that described CQI-measures in subframe comprises the interference from described one or more small-cell BS, and described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

12. according to the method for claim 10, and wherein said serving BS broadcasts is macrocell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-measures described interference in subframe and comprises from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS, and described CQI-uses the described interference in subframe to comprise the interference from described one or more macrocell BS; And

If wherein described CQI-measurement subframe is blank type subframe, the described interference that described CQI-measures in subframe comprises the interference from described one or more macrocell BS, and described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

13. according to the method described in claim 11 or 12, wherein calculates the described interference from described one or more macrocell BS based on the following: the transmitting power of the path loss from described UE to described one or more macrocell BS, the shadow factor from described UE to described one or more macrocell BS, described one or more macrocell BS and the channel information described UE and described one or more macrocell BS; And

Wherein calculate the described interference from described one or more small-cell BS based on the following: the transmitting power of the path loss from described UE to described one or more small-cell BS, the shadow factor from described UE to described one or more small-cell BS, described one or more small-cell BS and the channel information described UE and described one or more small-cell BS.

14. methods according to claim 4, wherein do not correspond to described CQI-in response to the described CQI receiving and use subframe, obtain described target CQI and comprise:

Obtain CQI adjusted value to adjust the described CQI receiving; And

Described CQI and described CQI adjusted value based on receiving calculate described target CQI.

15. methods according to claim 14, wherein obtain CQI adjusted value and comprise to adjust the described CQI receiving:

Obtain CQI based on historical CQI information and adjust maximum and CQI adjustment minimum value; And

Adjusting minimum value from described CQI adjusts and peaked scope, selects a value using as described CQI adjusted value to described CQI.

16. methods according to claim 4, also comprise:

Use subframe in response to the described CQI receiving corresponding to described CQI-, the described CQI receiving is defined as to described target CQI.

17. methods according to claim 1, also comprise:

Send the resource division information of specifying described CQI-to measure the described type of subframe to described UE.

18. methods according to claim 1, also comprise:

Send data to described UE based on described target CQI.

19. for a method for the transfer of data of communication system, described system comprise subscriber equipment (UE), for the serving BS (BS) of described UE service and disturb described UE at least one disturb BS, wherein said method comprises:

Measure the CQI corresponding to CQI (CQI)-measurement subframe; And

The described CQI measuring is sent to described serving BS broadcasts, the described CQI of described serving BS broadcasts based on measuring is obtained corresponding to CQI-and use the target CQI of subframe, with according to described target CQI by extremely described UE of transmission transfer of data.

20. methods according to claim 19, wherein measure corresponding to the CQI of CQI-measurement subframe and comprise:

Receive the resource division information of specifying described CQI-to measure the type of subframe from described serving BS broadcasts; And

Measure the described CQI that measures subframe corresponding to the CQI-of the described type of specifying.

21. methods according to claim 19, wherein said CQI-measures the type of subframe and is specified by described serving BS broadcasts, and wherein sends the described CQI that measures and comprise to described serving BS broadcasts:

Only described CQI is sent to described serving BS broadcasts.

22. methods according to claim 19, wherein said CQI-measures the type of subframe and is not specified by described serving BS broadcasts, and wherein sends the described CQI that measures and comprise to described serving BS broadcasts:

The CQI that sends described CQI and indicate described CQI-to measure the described type of subframe to described serving BS broadcasts measures sub-frame information.

23. methods according to claim 19, also comprise:

Receive the data of transmitting based on described target CQI from described serving BS broadcasts.

24. 1 kinds of devices for the transfer of data of communication system, described communication system comprise subscriber equipment (UE), for the serving BS (BS) of described UE service and disturb described UE at least one disturb BS, wherein said device comprises:

Receiving element, is configured to receive the CQI corresponding to CQI (CQI)-measurement subframe from described UE; And

Obtain unit, be configured to obtain based on the described CQI receiving the target CQI that uses subframe corresponding to CQI-, to send data to described UE according to described target CQI.

25. devices according to claim 24, wherein said CQI-measures the type of subframe and is specified by described serving BS broadcasts, and wherein said receiving element comprises:

Be configured to only receive described CQI for obtaining the device of described target CQI from described UE.

26. devices according to claim 24, wherein said CQI-measures the type of subframe and is not specified by described serving BS broadcasts, and wherein said receiving element comprises:

The CQI that is configured to receive described CQI and indicate described CQI-to measure the described type of subframe from described UE measures sub-frame information, for obtaining the device of described target CQI.

27. devices according to claim 24, wherein said acquisition unit comprises:

Determining device, the subframe bitmap that is configured to described at least one the interference BS based on being configured with blank type subframe determines whether the described CQI receiving uses subframe corresponding to described CQI-; And

Obtain device, be configured to not correspond to described CQI-in response to the described CQI receiving and use subframe, obtain described target CQI.

28. devices according to claim 27, wherein said CQI-measures the described type of subframe and is specified by described serving BS broadcasts, and wherein said determining device comprises:

Be configured to obtain based on described subframe bitmap the device of the described type of described CQI-use subframe;

Be configured to judge that described CQI-measures whether identical with the described type of the described CQI-use subframe device of described type of subframe;

Use the described type of subframe identical if be configured to the described type of described CQI-measurement subframe with described CQI-, determine that the described CQI receiving uses the device of subframe corresponding to described CQI-; And

Do not use the described type of subframe not identical with described CQI-if be configured to the described type of described CQI-measurement subframe, determine that the described CQI receiving does not correspond to the device of described CQI-use subframe.

29. devices according to claim 27, wherein said CQI-measures the described type of subframe and is not specified by described serving BS broadcasts, and wherein said determining device comprises:

Be configured to measure sub-frame information and obtain described CQI-and measure based on CQI from described UE the device of the described type of subframe;

Be configured to obtain based on described subframe bitmap the device of the described type of described CQI-use subframe;

Be configured to judge that described CQI-measures whether identical with the described type of the described CQI-use subframe device of described type of subframe;

Use the described type of subframe identical if be configured to the described type of described CQI-measurement subframe with described CQI-, determine that the described CQI receiving uses the device of subframe corresponding to described CQI-; And

Do not use the described type of subframe not identical with described CQI-if be configured to the described type of described CQI-measurement subframe, determine that the described CQI receiving does not correspond to the device of described CQI-use subframe.

30. devices according to claim 27, wherein said communication system is TDD system, wherein said acquisition device comprises:

Be configured to based on the interference of described CQI-in subframe and calculate the device of Signal to Interference plus Noise Ratio (SINR) in the received power at described UE place; And

Be configured to determine based on the described SINR calculating the device of described target CQI.

31. devices according to claim 30, wherein said serving BS broadcasts is small-cell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-uses the described interference in subframe to comprise the interference from described one or more small-cell BS; And

If wherein described CQI-to measure subframe be blank type subframe, described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

32. devices according to claim 30, wherein said serving BS broadcasts is macrocell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-uses the described interference in subframe to comprise the interference from described one or more macrocell BS; And

If wherein described CQI-to measure subframe be blank type subframe, described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

33. devices according to claim 27, wherein said communication system is FDD system, wherein said acquisition device comprises:

Be configured to measure based on described CQI-that the interference in subframe, described CQI-are used the interference in subframe and the SINR of the measurement that obtains from the described CQI receiving, calculate the device of Signal to Interference plus Noise Ratio (SINR); And

Be configured to determine based on the described SINR calculating the device of described target CQI.

34. devices according to claim 33, wherein said serving BS broadcasts is small-cell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-measures described interference in subframe and comprises from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS, and described CQI-uses the described interference in subframe to comprise the interference from described one or more small-cell BS; And

If wherein described CQI-measurement subframe is blank type subframe, the described interference that described CQI-measures in subframe comprises the interference from described one or more small-cell BS, and described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

35. according to the device of claim 33, and wherein said serving BS broadcasts is macrocell BS, and described at least one interference BS comprises one or more macrocell BS and/or one or more small-cell BS;

If wherein described CQI-measurement subframe is normal type subframe, described CQI-measures described interference in subframe and comprises from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS, and described CQI-uses the described interference in subframe to comprise the interference from described one or more macrocell BS; And

If wherein described CQI-measurement subframe is blank type subframe, the described interference that described CQI-measures in subframe comprises the interference from described one or more macrocell BS, and described CQI-uses described interference in subframe to comprise from the interference of described one or more small-cell BS and from the interference of described one or more macrocell BS.

36. according to the device described in claim 34 or 35, wherein calculates the described interference from described one or more macrocell BS based on the following: the transmitting power of the path loss from described UE to described one or more macrocell BS, the shadow factor from described UE to described one or more macrocell BS, described one or more macrocell BS and the channel information described UE and described one or more macrocell BS; And

Wherein calculate the described interference from described one or more small-cell BS based on the following: the transmitting power of the path loss from described UE to described one or more small-cell BS, the shadow factor from described UE to described one or more small-cell BS, described one or more small-cell BS and the channel information described UE and described one or more small-cell BS.

37. devices according to claim 27, wherein said acquisition device comprises:

Be configured to obtain CQI adjusted value to adjust the device of the described CQI receiving; And

The described CQI and the described CQI adjusted value that are configured to based on receiving calculate the device of described target CQI.

38. according to the device described in claim 37, is wherein configured to obtain CQI adjusted value and comprises with the described device of adjusting the described CQI receiving:

Be configured to obtain based on historical CQI information the device of CQI adjustment maximum and CQI adjustment minimum value; And

Being configured to adjust minimum value from described CQI adjusts peaked scope and selects a value using the device as described CQI adjusted value to described CQI.

39. devices according to claim 27, wherein said acquisition unit also comprises:

Be configured to use subframe in response to the described CQI receiving corresponding to described CQI-, the described CQI receiving be defined as to the device of described target CQI.

40. devices according to claim 24, also comprise:

Transmitting element, is configured to send the resource division information of specifying described CQI-to measure the type of subframe to described UE.

41. devices according to claim 24, also comprise:

Transmission unit, is configured to send data to described UE based on described target CQI.

42. for a device for the transfer of data of communication system, described system comprise subscriber equipment (UE), for the serving BS (BS) of described UE service and disturb described UE at least one disturb BS, wherein said device comprises:

Measuring unit, is configured to measure the CQI corresponding to CQI (CQI)-measurement subframe; And

Transmitting element, is configured to the described CQI measuring to be sent to described serving BS, makes the described CQI of described serving BS based on measuring determine the target CQI that uses subframe corresponding to CQI-, to send data to described UE according to described target CQI.

43. according to the device described in claim 42, and wherein said measuring unit comprises:

Be configured to receive the device of specifying described CQI-to measure the resource division information of the type of subframe from described serving BS broadcasts; And

Be configured to measure the device of measuring the described CQI of subframe corresponding to the CQI-of the described type of specifying.

44. according to the device described in claim 42, and wherein said CQI-measures the type of subframe and specified by described serving BS broadcasts, and wherein said transmitting element comprises:

Dispensing device, is configured to only described CQI is sent to described serving BS broadcasts.

45. according to the device described in claim 42, and wherein said CQI-measures the type of subframe and do not specified by described serving BS broadcasts, and wherein said transmitting element comprises:

Dispensing device, the CQI that is configured to send described CQI and indicate described CQI-to measure the described type of subframe to described serving BS broadcasts measures sub-frame information.

46. according to the device described in claim 42, also comprises:

Receiving element, is configured to receive from described serving BS broadcasts the data of transmitting based on described target CQI.

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