CN103516475A - Cell interference coordination method used in heterogeneous network and heterogeneous network - Google Patents
Cell interference coordination method used in heterogeneous network and heterogeneous network Download PDFInfo
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- CN103516475A CN103516475A CN201210219354.6A CN201210219354A CN103516475A CN 103516475 A CN103516475 A CN 103516475A CN 201210219354 A CN201210219354 A CN 201210219354A CN 103516475 A CN103516475 A CN 103516475A
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Abstract
The invention discloses a cell interference coordination method used in a heterogeneous network and the heterogeneous network. The method comprises the steps that a first base station does not transmit control information on at least one subframe of at least one kind of frequency domain carrier wave in a component carrier wave, and configuration information in regard to an aggregation carrier wave of the first base station is obtained; a second base station does not transmit control information on more than one subframe, except the at least one subframe, in the component carrier wave according to the configuration information. By means of the method, each base station can take the positions of subframes which do not transmit control information of neighboring base stations as control channels of signal transmission of the base station, so that the control channels are not interfered by the neighboring base stations, and then cell interference coordination in the heterogeneous network with carrier aggregation available is achieved, spectrum effectiveness of the edge of a cell is improved, and then service quality of the edge of the cell in the heterogeneous network with carrier aggregation available is improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly method for cell interference coordination and the heterogeneous network in a kind of heterogeneous network.
Background technology
Long Term Evolution (Long Term Evolution, LTE) technology is the new generation of wireless communication system that 3GPP releases.The deployment at LTE network initial stage, adopts the identical networking mode of large bandwidth conventionally.In identical networking mode, each neighbor cell adopts identical carrier wave, and therefore, the user of neighbor cell, the particularly user in cell edge, may receive the same frequency signal of two or more communities at one time.When the homogenous frequency signal from each community is stronger, this user's communication will be subject to severe jamming.For solving the mutual interference problem between identical networking mode small area, Inter-Cell Interference Coordination (Inter-cell Interference Coordination, ICIC) has been proposed.ICIC controls the interference of minizone by managing radio resources, thereby improves the service quality of Cell Edge User.For solving the phase mutual interference between identical networking mode small area, 3GPP has proposed LTE R8 ICIC.
Shown in Figure 1, Fig. 1 illustrates the schematic diagram of a kind of inter-cell interference coordination method of the prior art.LTE R8 ICIC is by being divided into core (Cell Center) and marginal portion (Cell Edge) according to quality of wireless channel or with the distance of evolved base station by community, the user who is positioned at center of housing estate part and marginal portion is treated with a certain discrimination, particularly, adopt different Radio Resource coordination modes, use different frequency duplex factor as one.User by marginal portion, LTE R8ICIC ，Liang Ge neighbor cell will use different frequency resources, for example S1 in Fig. 1, S2, S3 frequency.Not only effectively solve the interference problem of cell edge part, also guaranteed the spectrum efficiency of center of housing estate part.
Continuous expansion along with LTE network coverage, and the development of LTE technology, traditional macro base station coverage mode can increase along with user's quantity on capacity and bandwidth demand increases and is difficult to satisfy the demand, especially some hot zones, simple grand covering cannot meet customer flow demand, and isomorphism coverage mode there will be blind area, affect user's use.Therefore, LTE R10 has introduced heterogeneous network (Heterogeneous Network, Het-Net), makes the form of networking more flexible.This networking model mainly refers to places low power nodes (Lower Power Node in Hong coverage cell, LPN), for example long-distance radio frequency unit (Remote Radio Unit/Remote Radio Head, RRU/RRH), femto base station (Pico), Home eNodeB (Femto), via node (Relay Node) etc.The introducing of LPN means the intervention of Geng Duo inter-frequency interference cell, particularly has overlay area more and that grand covering is overlapping.On the other hand, user accesses community in the situation that of lower received power, also just mean that signal power is lower, and the further enhancing of descending interference makes signal to noise ratio SINR also lower, and not only Traffic Channel is received interference, control channel also can be subject to more impact.Shown in Figure 2, the schematic diagram of the area interference between different base station in heterogeneous network has been shown in Fig. 2.
Yet the aforementioned method for cell interference coordination for identical networking mode can not solve the cell interference issues of heterogeneous network.To this, LTE R10 proposes enhancement mode ICIC(enhanced ICIC, eICIC), to solve the cell interference issues of heterogeneous network.
The LTE system carrier that carrier aggregation technology is larger bandwidth by the carrier aggregation of continuous or discrete LTE system, thus realize maximum system bandwidth.In LTE system, increasing scheme has been used carrier aggregation technology.
Shown in Figure 3, at the heterogeneous network of supporting carrier aggregation, the situation of area interference is more complicated.In Fig. 3, with macro base station and Pico base station mixed networking, by the situation of two kinds of carrier aggregation, be example.Macro base station and Pico base station all support that carrier frequency is the carrier aggregation of carrier wave f1 and the carrier wave f2 that frequency is 2.6GHz of 2.1GHz.The coverage of macro base station is larger, and the transmitting power of macro base station transmitting carrier wave f1 and f2 is all larger.Pico base station is in macro base station coverage, and transmitting power is less.When Pico base station from macro base station close to time, the downstream signal of macro base station receives the user to Pico cell edge from the carrier wave f1 of Pico base station and the down channel of f2 and produces larger interference, reduce Pico cell edge spectrum efficiency, affected the quality of service of the cell edge in the heterogeneous network of carrier aggregation.
Yet LTE R10 eICIC is only for the area interference in the heterogeneous network of non-carrier aggregation, also do not support the coordinating district interference scheme in the heterogeneous network of carrier aggregation at present.
Summary of the invention
The present inventor finds above-mentioned the problems of the prior art, has proposed a kind of technical scheme of supporting the heterogeneous network small area interference coordination of carrier aggregation, with the coordinating district interference in the heterogeneous network of the carrier aggregation that provides support.
According to an aspect of the present invention, the invention provides the method for cell interference coordination in a kind of heterogeneous network, described heterogeneous network comprises the first adjacent base station and the second base station, described heterogeneous network is supported carrier aggregation, in described carrier aggregation, the component carrier of institute's polymerization comprises two or more frequency domain carrier waves, and described method comprises:
Control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, obtains the first base station about the configuration information of polymerization carrier wave;
Configuration information according to the first base station about polymerization carrier wave, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier of the second base station.
According to another aspect of the present invention, the present invention also provides a kind of heterogeneous network, described heterogeneous network comprises the first adjacent base station and the second base station, described heterogeneous network is supported carrier aggregation, in described carrier aggregation, the component carrier of institute's polymerization comprises two or more frequency domain carrier waves, control information transmission not at least one subframe of described the first base station at least one frequency domain carrier wave in component carrier, obtains the first base station about the configuration information of polymerization carrier wave;
Described the second base station is the configuration information about polymerization carrier wave according to the first base station, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
In scheme provided by the present invention, control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, obtains the first base station about the configuration information of polymerization carrier wave.Configuration information according to the first base station about polymerization carrier wave, in this frequency domain carrier wave, the second base station can be using the first base station not the subframe position of control information transmission as the control channel of the second base station, so that the control channel of the second base station is not disturbed by the first base station.Similarly, the second base station control information transmission not in other subframe beyond this subframe in this component carrier, produces and disturbs the control channel of the first base station avoiding.Each base station can using adjacent base station not the subframe position of control information transmission as the control channel of this base station transmitted signal, so that control channel each other is not disturbed by adjacent base station, thereby, realized the coordinating district interference in the heterogeneous network of supporting carrier aggregation, effectively improve the spectrum efficiency of cell edge, thereby improved the quality of service of supporting the edge, heterogeneous network small area of carrier aggregation.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, it is clear that further feature of the present invention and advantage thereof will become.
Accompanying drawing explanation
The accompanying drawing that forms a part for specification has been described embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, can more be expressly understood the present invention, wherein:
Fig. 1 illustrates the schematic diagram of a kind of inter-cell interference coordination method of the prior art;
Fig. 2 illustrates the schematic diagram of the area interference between different base station in heterogeneous network;
Fig. 3 illustrates the schematic diagram of the heterogeneous network small area interference of a kind of carrier aggregation of the prior art;
Fig. 4 illustrates the schematic flow sheet of a kind of embodiment of heterogeneous network provided by the present invention small area disturbance coordination method;
Fig. 5 illustrates the schematic flow sheet of the another kind of embodiment of heterogeneous network provided by the present invention small area disturbance coordination method;
Fig. 6 illustrates the schematic diagram of the polymerization carrier wave configuration in the another kind of embodiment of heterogeneous network provided by the present invention small area disturbance coordination method;
Fig. 7 illustrates the schematic flow sheet of heterogeneous network provided by the present invention small area another embodiment of disturbance coordination method;
Fig. 8 illustrates the schematic diagram of the polymerization carrier wave configuration of heterogeneous network little Zhong provided by the present invention district another embodiment of disturbance coordination method;
Fig. 9 illustrates the carrier-grade schematic diagram of heterogeneous network little Zhong provided by the present invention district another embodiment of disturbance coordination method; And
Figure 10 illustrates the composition schematic diagram of heterogeneous network embodiment provided by the present invention.
Embodiment
Now with reference to accompanying drawing, describe various exemplary embodiment of the present invention in detail.It should be noted that: unless illustrate in addition, the parts of setting forth in these embodiments and the positioned opposite of step do not limit the scope of the invention.
, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not to draw according to actual proportionate relationship meanwhile.
To the description only actually of at least one exemplary embodiment, be illustrative below, never as any restriction to the present invention and application or use.
For the known technology of person of ordinary skill in the relevant, method and apparatus, may not discuss in detail, but in suitable situation, described technology, method and apparatus should be regarded as authorizing a part for specification.
In all examples with discussing shown here, it is exemplary that any occurrence should be construed as merely, rather than as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: in similar label and letter accompanying drawing below, represent similar terms, therefore, once be defined in an a certain Xiang Yi accompanying drawing, in accompanying drawing subsequently, do not need it to be further discussed.
Shown in Figure 4, this illustrates the schematic flow sheet of a kind of embodiment of heterogeneous network provided by the present invention small area disturbance coordination method.
Heterogeneous network in this embodiment comprises the first adjacent base station and the second base station.Heterogeneous network is supported carrier aggregation, and in carrier aggregation, the component carrier of institute's polymerization comprises two or more frequency domain carrier waves.
Relative position according to each component carrier at frequency domain, can be divided into carrier aggregation continuous carrier polymerization (Continuous Carrier Aggregation) and discontinuous carrier polymerization (Discontinuous Carrier Aggregation).
Continuous carrier polymerization is called again continuous carrier polymerization (Intra-band Adjacent Carrier Aggregation) in frequency band, and the component carrier that refers to institute's polymerization is positioned at same section of frequency band and adjacent one another are on frequency domain.
It is non-conterminous mutually on frequency domain that discontinuous carrier polymerization refers to the component carrier of institute's polymerization.According to component carrier, whether be positioned at same section of frequency band, discontinuous carrier polymerization can be further subdivided into discontinuous carrier polymerization between the interior discontinuous carrier polymerization of frequency band and frequency band.Although the component carrier that the interior discontinuous carrier polymerization of frequency band refers to institute's polymerization is non-conterminous mutually on frequency domain, is positioned at same section of frequency band.The component carrier that between frequency band, discontinuous carrier polymerization refers to institute's polymerization is distributed on different frequency bands, as 2.1GHz and 2.6GHz.
In following each embodiment, the mode of carrier aggregation can or be any one in discontinuous carrier polymerization for continuous carrier polymerization.
Method for cell interference coordination in the present embodiment in heterogeneous network comprises:
In step 401, control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, obtains the first base station about the configuration information of polymerization carrier wave.
In step 402, the configuration information according to the first base station about polymerization carrier wave, the second base station is more than one control information transmission not in subframe of other beyond at least one subframe in component carrier.
The second base station is the configuration information about polymerization carrier wave according to the first base station, for a kind of frequency domain carrier wave in component carrier, the the first base station not subframe of control information transmission can not produce interference to the control channel of second this locational subframe of base station, therefore, the second base station can send control information on the control channel of this subframe position.
Similarly, for making the second base station the control channel of the first base station not produced and be disturbed, the second base station is in component carrier, for control information transmission not in other beyond at least one subframe of the first base station above subframe, thereby the control channel of the subframe of the first base station correspondence position is not produced and disturbed.
For the same frequency carrier in multicarrier, each base station can using adjacent base station not the subframe position of control information transmission as the control channel of this base station transmitted signal, so that control channel each other is not disturbed by adjacent base station, thereby, realize the coordinating district interference in the heterogeneous network of supporting carrier aggregation.
Control information transmission not in the subframe of each frequency domain carrier wave of base station in component carrier, specifically can have different implementations.In following embodiment, two kinds of embodiments are example, it will be understood by those skilled in the art that also and can be realized by other mode.
Shown in Figure 5, Fig. 5 illustrates the schematic flow sheet of the another kind of embodiment of heterogeneous network provided by the present invention small area disturbance coordination method.Shown in Fig. 6, Fig. 6 illustrates the schematic diagram of the polymerization carrier wave configuration in the another kind of embodiment of heterogeneous network provided by the present invention small area disturbance coordination method.
In step 501, the first base station is by (the Physical Downlink Control Channel of the Physical Downlink Control Channel at least one subframe of at least one frequency domain carrier wave, PDCCH) be configured to idle channel, make not control information transmission of control channel PDCCH at least one subframe of at least one frequency domain carrier wave, obtain the first base station about the configuration information of polymerization carrier wave.
In step 502, the configuration information according to the first base station about polymerization carrier wave, the second base station is configured to idle channel by the PDCCH in other above subframe, makes not control information transmission of other PDCCH in above subframe.
In order to reduce the interference to adjacent cell base station carrier control channel, the first base station is configured to idle channel by the PDCCH at least one subframe of at least one frequency domain carrier wave.As shown in Figure 6, carrier wave f1 and f2 are respectively the component carrier of the first base station and the second base station.Front 1-3 symbol of each subframe is control channel PDCCH, after symbol be data channel PDSCH.The control channel PDCCH of the subframe of the carrier wave f2 of the first base station is configured to idle channel, does not send control information, thereby can the control channel PDCCH of the subframe of the carrier wave f2 of the second base station not produced and be disturbed.Similarly, the control channel PDCCH of the subframe of the carrier wave f1 of the second base station is configured to idle channel, does not send control information, and therefore, can the control channel PDCCH of the subframe of the carrier wave f1 of the first base station not produced and be disturbed.Thereby, can effectively reduce between the first base station and the second base station the interference to the control channel PDCCH of adjacent base station.
For Yi Ge base station, when one of them control channel PDCCH that crosses a plurality of carrier wave subframes being set being idle channel, the data channel of this carrier wave subframe, be Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) the control channel PDCCH in the identical subframe of other carrier wave beyond this carrier wave of ，Ke Yougai base station carries out cross scheduling (Cross Schedule).By cross scheduling, a plurality of carrier waves can be configured to across carrier dispatching, on each component carrier, not to have independently control channel PDCCH, but at Downlink Control Information (the Downlink Control Information of control channel PDCCH, DCI) in subband, the corresponding relation between indicator control channel PDCCH and the component carrier of shared control information is carried out in newly-increased carrier wave indication territory (Carrier indicator Field, CIF).
Specifically, the first base station is configured to idle channel by the control channel PDCCH at least one subframe of at least one frequency domain carrier wave, the control channel PDCCH cross scheduling of the data channel PDSCH at least one subframe of at least one frequency domain carrier wave at least one subframe of other carrier wave beyond at least one frequency domain carrier wave; The second base station is configured to idle channel by the PDCCH in other above subframe, and the data channel PDSCH in other above subframe is the control channel PDCCH cross scheduling in other above subframe in other carrier wave beyond other above subframe place frequency domain carrier wave.
For example, shown in Fig. 6, particularly, the control channel of the first base station carrier wave f2 is set to idle channel, by the data channel PDSCH of the control channel PDCCH cross scheduling carrier wave f2 of carrier wave f1.Therefore, the control channel PDCCH of a first base station informing user terminal UE monitoring carrier wave f1.When UE monitors and receives after the control channel PDCCH of carrier wave f1, in carrier wave f1 control channel PDCCH, comprised the indication of indication UE to the frequency receiving data information of carrier wave f1 and carrier wave f2.UE, by the indication information of the control channel PDCCH of carrier wave f1, removes corresponding frequency receiving data information, according to the data channel PDSCH of the indication information reception carrier f1 of control channel PDCCH in carrier wave f1 and carrier wave f2.Thereby realize the data channel PDSCH of this base station carrier of control channel PDCCH channel interference-free cross scheduling f2 of the first base station carrier f1, dispatch the data channel PDSCH of this base station carrier f1 simultaneously.
Similarly, shown in Fig. 6, for the second base station, the data channel PDSCH that the control channel PDCCH channel of carrier wave f2 can this base station carrier of interference-free cross scheduling f1 dispatches the data channel PDSCH of this base station carrier f2 simultaneously.
Shown in Figure 7, Fig. 7 illustrates the schematic flow sheet of heterogeneous network provided by the present invention small area another embodiment of disturbance coordination method.Shown in Fig. 8, Fig. 8 illustrates the schematic diagram of the polymerization carrier wave configuration of heterogeneous network little Zhong provided by the present invention district another embodiment of disturbance coordination method.
In step 701, the first base station is configured to idle channel by the control channel PDCCH at least one subframe of at least one frequency domain carrier wave and data channel PDSCH, make not control information transmission of control channel PDCCH at least one subframe of at least one frequency domain carrier wave, make not transmitting data information of data channel PDSCH at least one subframe of at least one frequency domain carrier wave, obtain the first base station about the configuration information of polymerization carrier wave.
In step 702, configuration information according to the first base station about polymerization carrier wave, the second base station is configured to idle channel by control channel PDCCH and data channel PDSCH in other above subframe, make not control information transmission of other the control channel PDCCH in above subframe, make not transmitting data information of other the data channel PDSCH in above subframe.
Similarly, in order to reduce the interference to adjacent cell base station carrier control channel, the first base station is all configured to idle channel by the control channel PDCCH at least one subframe of at least one frequency domain carrier wave and data channel PDSCH.Shown in Fig. 8, carrier wave f1 and f2 are respectively the component carrier of the first base station and the second base station.Front 1-3 symbol of each subframe is control channel PDCCH, after symbol be data channel PDSCH.Control channel PDCCH and the data channel PDSCH of the part subframe of the carrier wave f2 of the first base station are all configured to idle channel, do not send control information and data message, thereby can the subframe of the carrier wave f2 of the second base station not produced and be disturbed.Similarly, control channel PDCCH and the data channel PDSCH of the part subframe of the carrier wave f1 of the second base station are also configured to idle channel, do not send control information and data message, therefore, can the subframe of the carrier wave f1 of the first base station not produced and be disturbed.Thereby, can effectively reduce between the first base station and the second base station the interference to adjacent base station signal.
More specifically, as the control channel PDCCH in subframe and data channel PDSCH being configured to the another kind of execution mode of idle channel, the first base station can be blank subframe (Almost Blank Subframe, ABS) almost by least one sub-frame configuration of at least one frequency domain carrier wave.Accordingly, the second base station is blank subframe ABS almost by other above sub-frame configuration.
Known ABS, no longer describes in detail here for those skilled in the art.Base station during by sub-frame configuration ABS, except the information such as necessary reference symbol, synchronizing symbol and broadcast message, no longer sends out of Memory.Thereby certain subframe of ，Dang Zhe base station is made as ABS Shi，Ze Gai base station to be disturbed less in Dui Lin base station, position corresponding to ABS.
For the different frequency domain carrier waves in component carrier, the carrier wave of high-frequency frequency domain can improve network capacity conventionally, and the carrier wave of low frequency frequency domain can meet wider covering.For example, for the carrier aggregation of 2.6GHz and 2.1GHz, the carrier wave of 2.6GHz can improve capacity, and the carrier wave of 2.1GHz mainly can meet wider covering.Therefore, further, the component carrier of the first base station and the second base station can be carried out to classification.
For example, can, according to the frequency domain size of component carrier, the rank of component carrier be set, in one of them base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is higher, in another base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is lower.
For instance, take the first base station as macro base station, the second base station be other any one compared with macro base station power Geng Di base station, as pico base station.Rank for macro base station component carrier arranges, and frequency domain is larger, and carrier-grade is lower, and the carrier wave of 2.6GHz is low level carrier wave, and the carrier wave of 2.1GHz is low level carrier wave.On the contrary, for the rank setting of pico base station component carrier, frequency domain is larger, and carrier-grade is higher, and the carrier wave of 2.6GHz is high-level carrier wave, the rudimentary carrier wave of 2.1GHz.
Shown in Figure 9, Fig. 9 illustrates the carrier-grade schematic diagram of heterogeneous network little Zhong provided by the present invention district another embodiment of disturbance coordination method.5 carrier wave f1 are all supported in the first base station and the second base station, f2, and f3, f4, the polymerization of f5, wherein the carrier-grade of the first base station is from high to low, the carrier-grade of the second base station is from low to high.
Component carrier is being carried out in other situation of classification, can be so that each base station, according to the order of carrier-grade, arranges successively.
For example, the first base station is clipped to high level order according to component carrier by rudimentary, control information transmission not at least one subframe of at least one frequency domain carrier wave in component carrier, the second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.
Above-mentioned, according to rank, arrange, for the execution mode shown in Fig. 5, for the first base station, the control channel PDCCH that may occur low level carrier wave subframe is set to not control information transmission, because the control channel PDCCH of other carrier waves of needs carries out cross scheduling, therefore, in another embodiment, for the carrier wave the carrier wave except highest level, the first base station is clipped to high level order according to component carrier by rudimentary, and the first base station is clipped to high level order according to component carrier by rudimentary.Similarly, for the carrier wave except other carrier wave of lowermost level, the second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.
In above each embodiment, be set to part subframe in a frame that the subframe of control information transmission not comprises at least one frequency domain carrier wave or whole subframes.I.e. control information transmission not in the part subframe of the first base station in an a kind of frame of frequency domain carrier wave, configuration information according to the first base station about polymerization carrier wave, the second base station is more than one control information transmission not in subframe of other beyond this part subframe in component carrier.Control information transmission not in whole subframes in the frame of the first base station at a kind of frequency domain carrier wave, the second base station can be in this component carrier whole subframe control information transmissions.
According to the inventive method embodiment, the first base station is according to the loading demand of the actual loading of the first base station and/or the second base station, according to component carrier, by rudimentary, be clipped to high level order, determine at least one subframe of at least one frequency domain carrier wave, control information transmission not at least one subframe of at least one frequency domain carrier wave in component carrier.Accordingly, the second base station is according to the loading demand of the actual loading of the second base station and/or the first base station, according to component carrier, by senior, be clipped to low-level order, determine other above subframe beyond at least one subframe, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.By dynamically, according to the load of the first base station and/or the second base station, adjust the utilization of resources of carrier wave, can improve resource utilization.
For example, take in above-described embodiment and configure ABS as example, the first base station can be according to the capacity requirement of the second base station, can be ABS by whole sub-frame configuration of the first base station low level carrier wave f2, if whole subframes of the carrier wave f2 of the first base station are all configured to ABS, still can not meet the demand of the second base station capacity, the part subframe of the first senior carrier wave f1 in base station can be configured to ABS.
According to the inventive method embodiment, the first base station in response is in the interference coordination request with the second base station, in component carrier, control information transmission not at least one subframe of at least one frequency domain carrier wave, obtains the first base station about the configuration information of polymerization carrier wave.
According to the inventive method embodiment, the first base station control information transmission not in subframe in component carrier,, for which subframe of which carrier wave control information transmission not, can be specifically also that the first base station adopts static mode predetermined.Similarly, the second base station control information transmission not in which subframe of which carrier wave in component carrier, can be also according to the first base station in component carrier in subframe not control information transmission preset.
According to the inventive method embodiment, the second base station control information transmission not in which subframe of which carrier wave in component carrier, can be according to the first base station after obtaining the configuration information of the first base station about polymerization carrier wave, the first base station sends to the second base station by the first base station about the configuration information of polymerization carrier wave, thereby the second base station obtains the first base station about the configuration information of polymerization carrier wave.Between the first base station and the second base station, information realizes by X2 interface alternately.For example, by X2 interface, obtain the first base station about the configuration information of polymerization carrier wave, or load information etc.
According to the inventive method embodiment, the second base station is clipped to low-level order according to component carrier by senior, other in component carrier beyond at least one subframe more than one in subframe not control information transmission specifically comprise: the second base station is after powering up, configuration information according to the first base station about polymerization carrier wave, according to the order contrary with the first base station component carrier, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.
In each embodiment of the method, the first base station can be high power base station above, and the second base station can be low power base station.Wherein, high power base station can comprise macro base station.Low power base station can comprise: micro-station, slight station, Home eNodeB, relay station and Remote Radio Unit.
Heterogeneous network small area disturbance coordination method based on the various embodiments described above of the present invention, for the same frequency carrier in multicarrier, each base station can using adjacent base station not the subframe position of control information transmission as the control channel of this base station transmitted signal, so that control channel each other is not disturbed by adjacent base station, thereby, realize the coordinating district interference in the heterogeneous network of supporting carrier aggregation, effectively improve the spectrum efficiency of cell edge, thereby improved the quality of service of supporting the edge, heterogeneous network small area of carrier aggregation.
Figure 10 illustrates the composition schematic diagram of heterogeneous network embodiment provided by the present invention.The heterogeneous network of this embodiment can be used in the present invention the operation of above-mentioned each embodiment of the method.
As shown in figure 10, heterogeneous network comprises the first adjacent base station 1010 and the second base station 1020, and heterogeneous network is supported carrier aggregation, and in carrier aggregation, the component carrier of institute's polymerization comprises two or more frequency domain carrier waves.Control information transmission not at least one subframe of the first base station 1010 at least one frequency domain carrier wave in component carrier, obtains the first base station 1010 about the configuration information of polymerization carrier wave.The second base station 1020 is the configuration information about polymerization carrier wave according to the first base station 1020, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.
The heterogeneous network that the above embodiment of the present invention provides, configuration information according to the first base station about polymerization carrier wave, in this frequency domain carrier wave, the second base station can be using the first base station not the subframe position of control information transmission as the control channel of the second base station, so that the control channel of the second base station is not disturbed by the first base station.Similarly, the second base station control information transmission not in other subframe beyond this subframe in this component carrier, produces and disturbs the control channel of the first base station avoiding.Each base station can using adjacent base station not the subframe position of control information transmission as the control channel of this base station transmitted signal, so that control channel each other is not disturbed by adjacent base station, thereby, realized the coordinating district interference in the heterogeneous network of supporting carrier aggregation.
Corresponding with aforementioned a kind of embodiment of the method, in the another kind of embodiment of heterogeneous network, the first base station is configured to idle channel by the physical downlink control channel PDCCH at least one subframe of at least one frequency domain carrier wave, make not control information transmission of control channel PDCCH at least one subframe of at least one frequency domain carrier wave, obtain the first base station about the configuration information of polymerization carrier wave.The second base station is configured to idle channel by the control channel PDCCH in other above subframe, makes not control information transmission of other the control channel PDCCH in above subframe.
Corresponding with aforementioned a kind of embodiment of the method, in the another kind of embodiment of heterogeneous network, the first base station is configured to idle channel by the physical downlink control channel PDCCH at least one subframe of at least one frequency domain carrier wave, PDSCH at least one subframe of at least one frequency domain carrier wave, the PDCCH cross scheduling at least one subframe of other carrier wave beyond at least one frequency domain carrier wave; The second base station is configured to idle channel by the PDCCH in other above subframe, the PDSCH in other above subframe, the PDSCH cross scheduling in other carrier wave beyond other above subframe place frequency domain carrier wave in other above subframe.
Corresponding with aforementioned a kind of embodiment of the method, in the another kind of embodiment of heterogeneous network, the first base station is configured to idle channel by the control channel PDCCH at least one subframe of at least one frequency domain carrier wave and data channel PDSCH, make not control information transmission of control channel PDCCH at least one subframe of at least one frequency domain carrier wave, make not transmitting data information of data channel PDSCH at least one subframe of at least one frequency domain carrier wave, obtain the first base station about the configuration information of polymerization carrier wave.The second base station is configured to idle channel by control channel PDCCH and data channel PDSCH in other above subframe, make not control information transmission of other the control channel PDCCH in above subframe, make not transmitting data information of other the data channel PDSCH in above subframe.
More specifically, as the control channel PDCCH in subframe and data channel PDSCH being configured to the another kind of execution mode of idle channel, the first base station can be blank subframe ABS almost by least one sub-frame configuration of at least one frequency domain carrier wave.The second base station is blank subframe ABS almost by other above sub-frame configuration.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, according to the frequency domain size of component carrier, the rank of component carrier is set, and in one of them base station of the first base station and the second base station, frequency domain is larger, carrier-grade is higher, in another base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is lower.
Corresponding with aforementioned a kind of embodiment of the method, in the another kind of embodiment of heterogeneous network, in at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise: the first base station is clipped to high level order according to component carrier by rudimentary, control information transmission not at least one subframe of at least one frequency domain carrier wave in component carrier; The second base station in component carrier other beyond at least one subframe more than one in subframe not control information transmission comprise: the second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of in addition other of at least one subframe in component carrier.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, be set to part subframe in a frame that the subframe of control information transmission not comprises at least one frequency domain carrier wave or whole subframes.I.e. control information transmission not in the part subframe of the first base station in an a kind of frame of frequency domain carrier wave, configuration information according to the first base station about polymerization carrier wave, the second base station is more than one control information transmission not in subframe of other beyond this part subframe in component carrier.Control information transmission not in whole subframes in the frame of the first base station at a kind of frequency domain carrier wave, the second base station can be in this component carrier whole subframe control information transmissions.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, the first base station is according to the loading demand of the actual loading of the first base station and/or the second base station, according to component carrier, by rudimentary, be clipped to high level order, determine at least one subframe of at least one frequency domain carrier wave, control information transmission not at least one subframe of at least one frequency domain carrier wave in component carrier; The second base station is according to the loading demand of the actual loading of the second base station and/or the first base station, according to component carrier, by senior, be clipped to low-level order, determine other above subframe beyond at least one subframe, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.By dynamically, according to the load of the first base station and/or the second base station, adjust the utilization of resources of carrier wave, can improve resource utilization.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, the first base station is clipped to high level order according to component carrier by rudimentary, in component carrier, at least one subframe of at least one frequency domain carrier wave, control information transmission does not comprise: for the carrier wave the carrier wave except highest level, the first base station is clipped to high level order according to component carrier by rudimentary, and the first base station is clipped to high level order according to component carrier by rudimentary.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, the second base station is clipped to low-level order according to component carrier by senior, other in component carrier beyond at least one subframe more than one in subframe not control information transmission comprise: for the carrier wave except other carrier wave of lowermost level, the second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, obtaining the first base station comprises about the configuration information of polymerization carrier wave: the first base station in response is in the interference coordination request with the second base station, in component carrier, control information transmission not at least one subframe of at least one frequency domain carrier wave, obtains the first base station about the configuration information of polymerization carrier wave.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, after obtaining the configuration information of the first base station about polymerization carrier wave, also comprise: the first base station sends to the second base station by the first base station about the configuration information of polymerization carrier wave.
Corresponding with aforementioned a kind of embodiment of the method, in a kind of embodiment of heterogeneous network, the second base station is clipped to low-level order according to component carrier by senior, other in component carrier beyond at least one subframe more than one in subframe not control information transmission comprise:
The second base station after powering up, the configuration information according to the first base station about polymerization carrier wave, according to the order contrary with the first base station component carrier, more than one control information transmission not in subframe of other in component carrier beyond at least one subframe.
In each heterogeneous network embodiment, the first base station can be high power base station above, and the second base station can be low power base station.Wherein, high power base station can comprise macro base station.Low power base station can comprise: micro-station, slight station, Home eNodeB, relay station and Remote Radio Unit.
In each heterogeneous network embodiment, the mode of carrier aggregation is any one in continuous carrier polymerization or discontinuous carrier polymerization above.
Heterogeneous network based on the various embodiments described above of the present invention, for the same frequency carrier in multicarrier, each base station can using adjacent base station not the subframe position of control information transmission as the control channel of this base station transmitted signal, so that control channel each other is not disturbed by adjacent base station, thereby, realize the coordinating district interference in the heterogeneous network of supporting carrier aggregation, effectively improve the spectrum efficiency of cell edge, thereby improved the quality of service of supporting the edge, heterogeneous network small area of carrier aggregation.
So far, described in detail according to method for cell interference coordination and heterogeneous network in a kind of heterogeneous network of the present invention.For fear of covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, same or analogous part cross-references between each embodiment.For heterogeneous network embodiment, because it is substantially corresponding with embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
May realize in many ways method of the present invention, heterogeneous network.For example, can realize method and system of the present invention by any combination of software, hardware, firmware or software, hardware, firmware.The said sequence that is used for the step of described method is only in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless otherwise specified.In addition, in certain embodiments, can be also the program being recorded in recording medium by the invention process, these programs comprise for realizing the machine readable instructions of the method according to this invention.Thereby the present invention also covers storage for carrying out the recording medium of the program of the method according to this invention.
Although specific embodiments more of the present invention are had been described in detail by example, it should be appreciated by those skilled in the art, above example is only in order to describe, rather than in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (34)
1. the method for cell interference coordination in a heterogeneous network, described heterogeneous network comprises the first adjacent base station and the second base station, and described heterogeneous network is supported carrier aggregation, and in described carrier aggregation, the component carrier of institute's polymerization comprises two or more frequency domain carrier waves, it is characterized in that, described method comprises:
Control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, obtains the first base station about the configuration information of polymerization carrier wave;
Configuration information according to the first base station about polymerization carrier wave, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier of the second base station.
2. method according to claim 1, is characterized in that, at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise:
The first base station is configured to idle channel by the physical downlink control channel PDCCH at least one subframe of described at least one frequency domain carrier wave, and the PDCCH described in making at least one subframe of at least one frequency domain carrier wave is control information transmission not;
In at least one subframe of the second base station other frequency domain carrier wave beyond at least one frequency domain carrier wave described in component carrier, control information transmission does not comprise:
The second base station is configured to idle channel by the PDCCH in described other above subframe, and the PDCCH described in making in other above subframe is control information transmission not.
3. method according to claim 2, it is characterized in that, described the first base station is configured to idle channel by the physical downlink control channel PDCCH at least one subframe of described at least one frequency domain carrier wave, Physical Downlink Shared Channel PDSCH at least one subframe of described at least one frequency domain carrier wave, the PDCCH cross scheduling in described at least one subframe of other carrier wave beyond described at least one frequency domain carrier wave;
Described the second base station is configured to idle channel by the PDCCH in described other above subframe, PDSCH in described other above subframe, the PDCCH cross scheduling in other above subframe described in other carrier wave beyond described other above subframe place frequency domain carrier wave.
4. method according to claim 1, is characterized in that, at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise:
The first base station is configured to idle channel by PDCCH and PDSCH at least one subframe of described at least one frequency domain carrier wave, PDCCH described in making at least one subframe of at least one frequency domain carrier wave is control information transmission not, and the PDSCH described in making at least one subframe of at least one frequency domain carrier wave is transmitting data information not;
In at least one subframe of the second base station other frequency domain carrier wave beyond at least one frequency domain carrier wave described in component carrier, control information transmission does not comprise:
The second base station is configured to idle channel by PDCCH and PDSCH in described other above subframe, and the PDCCH described in making in other above subframe is control information transmission not, and the PDSCH described in making in other above subframe is transmitting data information not.
5. method according to claim 4, is characterized in that, the first base station is configured to idle channel by the PDCCH at least one subframe of described at least one frequency domain carrier wave and PDSCH and comprises:
The first base station is blank subframe ABS almost by least one sub-frame configuration of described at least one frequency domain carrier wave;
The second base station is configured to idle channel by the PDCCH in described other above subframe and PDSCH and comprises:
The second base station is blank subframe ABS almost by described other above sub-frame configuration.
6. according to the method described in claim 3 or 4, it is characterized in that the part subframe described in an above subframe of described at least one frequency domain carrier wave comprises in a frame of at least one frequency domain carrier wave or all subframe.
7. method according to claim 6, is characterized in that, also comprises:
According to the frequency domain size of component carrier, the rank of described component carrier is set, in one of them base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is higher, in another base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is lower.
8. method according to claim 7, is characterized in that, at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise:
The first base station is clipped to high level order according to component carrier by rudimentary, control information transmission not at least one subframe of at least one frequency domain carrier wave in component carrier;
Other beyond at least one subframe described in component carrier of the second base station more than one in subframe not control information transmission comprise:
The second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
9. method according to claim 8, it is characterized in that, described the first base station is according to the loading demand of the actual loading of the first base station and/or the second base station, according to component carrier, by rudimentary, be clipped to high level order, determine at least one subframe of described at least one frequency domain carrier wave, control information transmission not at least one subframe of at least one frequency domain carrier wave described in component carrier;
Described the second base station is according to the loading demand of the actual loading of the second base station and/or the first base station, according to component carrier, by senior, be clipped to low-level order, determine other above subframe beyond described at least one subframe, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
10. method according to claim 9, is characterized in that, the first base station is clipped to high level order according to component carrier by rudimentary, and in component carrier, at least one subframe of at least one frequency domain carrier wave, control information transmission does not comprise:
For the carrier wave the carrier wave except highest level, the first base station is clipped to high level order according to component carrier by rudimentary, and the first base station is clipped to high level order according to component carrier by rudimentary.
11. methods according to claim 10, is characterized in that, the second base station is clipped to low-level order according to component carrier by senior, other beyond at least one subframe described in component carrier more than one in subframe not control information transmission comprise:
For the carrier wave except other carrier wave of lowermost level, the second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
12. methods according to claim 11, is characterized in that, the second base station is clipped to low-level order according to component carrier by senior, other beyond at least one subframe described in component carrier more than one in subframe not control information transmission comprise:
Described the second base station is after powering up, configuration information according to the first base station about polymerization carrier wave, according to the order contrary with described the first base station component carrier, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
13. methods according to claim 1, is characterized in that, control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier obtains the first base station and comprises about the configuration information of polymerization carrier wave:
Described the first base station in response is in the interference coordination request with described the second base station, and in component carrier, control information transmission not at least one subframe of at least one frequency domain carrier wave, obtains the first base station about the configuration information of polymerization carrier wave.
14. methods according to claim 1, is characterized in that, after obtaining the configuration information of the first base station about polymerization carrier wave, also comprise:
The first base station sends to the second base station by described the first base station about the configuration information of polymerization carrier wave.
15. according to the method described in claim 1-5,7-14 any one, it is characterized in that, described the first base station is high power base station, and described the second base station is low power base station.
16. methods according to claim 15, is characterized in that, described high power base station comprises macro base station;
Described low power base station comprises: micro-station, slight station, Home eNodeB, relay station and Remote Radio Unit.
17. according to the method described in claim 1-5,7-14 any one, it is characterized in that, the mode of described carrier aggregation is any one in continuous carrier polymerization or discontinuous carrier polymerization.
18. 1 kinds of heterogeneous networks, described heterogeneous network comprises the first adjacent base station and the second base station, described heterogeneous network is supported carrier aggregation, in described carrier aggregation, the component carrier of institute's polymerization comprises two or more frequency domain carrier waves, it is characterized in that, control information transmission not at least one subframe of described the first base station at least one frequency domain carrier wave in component carrier, obtains the first base station about the configuration information of polymerization carrier wave;
Described the second base station is the configuration information about polymerization carrier wave according to the first base station, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
19. heterogeneous networks according to claim 18, is characterized in that, at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise:
The first base station is configured to idle channel by the physical downlink control channel PDCCH at least one subframe of described at least one frequency domain carrier wave, and the PDCCH described in making at least one subframe of at least one frequency domain carrier wave is control information transmission not;
In at least one subframe of the second base station other frequency domain carrier wave beyond at least one frequency domain carrier wave described in component carrier, control information transmission does not comprise:
The second base station is configured to idle channel by the PDCCH in described other above subframe, and the PDCCH described in making in other above subframe is control information transmission not.
20. heterogeneous networks according to claim 19, it is characterized in that, described the first base station is configured to idle channel by the PDCCH at least one subframe of described at least one frequency domain carrier wave, PDSCH at least one subframe of described at least one frequency domain carrier wave, the PDCCH cross scheduling in described at least one subframe of other carrier wave beyond described at least one frequency domain carrier wave;
Described the second base station is configured to idle channel by the PDCCH in described other above subframe, PDSCH in described other above subframe, the PDCCH cross scheduling in other above subframe described in other carrier wave beyond described other above subframe place frequency domain carrier wave.
21. heterogeneous networks according to claim 18, is characterized in that, at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise:
The first base station is configured to idle channel by PDCCH and PDSCH at least one subframe of described at least one frequency domain carrier wave, PDCCH described in making at least one subframe of at least one frequency domain carrier wave is control information transmission not, and the PDSCH described in making at least one subframe of at least one frequency domain carrier wave is transmitting data information not;
In at least one subframe of the second base station other frequency domain carrier wave beyond at least one frequency domain carrier wave described in component carrier, control information transmission does not comprise:
The second base station is configured to idle channel by PDCCH and PDSCH in described other above subframe, and the PDCCH described in making in other above subframe is control information transmission not, and the PDSCH described in making in other above subframe is transmitting data information not.
22. heterogeneous networks according to claim 21, is characterized in that, the first base station is configured to idle channel by the PDCCH at least one subframe of described at least one frequency domain carrier wave and PDSCH and comprises:
The first base station is blank subframe ABS almost by least one sub-frame configuration of described at least one frequency domain carrier wave;
The second base station is configured to idle channel by the PDCCH in described other above subframe and PDSCH and comprises:
The second base station is blank subframe ABS almost by described other above sub-frame configuration.
23. according to the heterogeneous network described in claim 20 or 21, it is characterized in that, the part subframe described in an above subframe of described at least one frequency domain carrier wave comprises in a frame of at least one frequency domain carrier wave or all subframe.
24. heterogeneous networks according to claim 23, is characterized in that, also comprise:
According to the frequency domain size of component carrier, the rank of described component carrier is set, in one of them base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is higher, in another base station of the first base station and the second base station, frequency domain is larger, and carrier-grade is lower.
25. heterogeneous networks according to claim 24, is characterized in that, at least one subframe of the first base station at least one frequency domain carrier wave in component carrier, control information transmission does not comprise:
The first base station is clipped to high level order according to component carrier by rudimentary, control information transmission not at least one subframe of at least one frequency domain carrier wave in component carrier;
Other beyond at least one subframe described in component carrier of the second base station more than one in subframe not control information transmission comprise:
The second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
26. heterogeneous networks according to claim 25, it is characterized in that, described the first base station is according to the loading demand of the actual loading of the first base station and/or the second base station, according to component carrier, by rudimentary, be clipped to high level order, determine at least one subframe of described at least one frequency domain carrier wave, control information transmission not at least one subframe of at least one frequency domain carrier wave described in component carrier;
Described the second base station is according to the loading demand of the actual loading of the second base station and/or the first base station, according to component carrier, by senior, be clipped to low-level order, determine other above subframe beyond described at least one subframe, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
27. heterogeneous networks according to claim 26, is characterized in that, the first base station is clipped to high level order according to component carrier by rudimentary, and in component carrier, at least one subframe of at least one frequency domain carrier wave, control information transmission does not comprise:
For the carrier wave the carrier wave except highest level, the first base station is clipped to high level order according to component carrier by rudimentary, and the first base station is clipped to high level order according to component carrier by rudimentary.
28. heterogeneous networks according to claim 27, is characterized in that, the second base station is clipped to low-level order according to component carrier by senior, other beyond at least one subframe described in component carrier more than one in subframe not control information transmission comprise:
For the carrier wave except other carrier wave of lowermost level, the second base station is clipped to low-level order according to component carrier by senior, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
29. heterogeneous networks according to claim 28, is characterized in that, the second base station is clipped to low-level order according to component carrier by senior, other beyond at least one subframe described in component carrier more than one in subframe not control information transmission comprise:
Described the second base station is after powering up, configuration information according to the first base station about polymerization carrier wave, according to the order contrary with described the first base station component carrier, more than one control information transmission not in subframe of other beyond at least one subframe described in component carrier.
30. heterogeneous networks according to claim 18, is characterized in that, control information transmission not at least one subframe of the first base station at least one frequency domain carrier wave in component carrier obtains the first base station and comprises about the configuration information of polymerization carrier wave:
Described the first base station in response is in the interference coordination request with described the second base station, and in component carrier, control information transmission not at least one subframe of at least one frequency domain carrier wave, obtains the first base station about the configuration information of polymerization carrier wave.
31. heterogeneous networks according to claim 18, is characterized in that, after obtaining the configuration information of the first base station about polymerization carrier wave, also comprise:
The first base station sends to the second base station by described the first base station about the configuration information of polymerization carrier wave.
32. according to the heterogeneous network described in claim 18-22,24-31 any one, it is characterized in that, described the first base station is high power base station, and described the second base station is low power base station.
33. heterogeneous networks according to claim 32, is characterized in that, described high power base station comprises macro base station;
Described low power base station comprises: micro-station, slight station, Home eNodeB, relay station and Remote Radio Unit.
34. according to the heterogeneous network described in claim 18-22,24-31 any one, it is characterized in that, the mode of described carrier aggregation is any one in continuous carrier polymerization or discontinuous carrier polymerization.
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| CN106817670B (en) * | 2015-12-01 | 2020-01-24 | 普天信息技术有限公司 | Communication interference avoiding method and device |
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