CN102014504B - Method for preventing signal interference in hierarchical network and base station - Google Patents
Method for preventing signal interference in hierarchical network and base station Download PDFInfo
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Abstract
The invention discloses a method for preventing signal interference in a hierarchical network and a base station. The method comprises the following steps that a first base station obtains UE the position information of (User Equipment) attributed to the first base station and a second base station relative to the first base station; the first base station obtains the time frequency resource information of the second base station; the first base station dispatches a time frequency resource adopted when signals are transmitted to the UE and the second base station according to the time frequency resource information and the position information of the second base station and the position information of the UE; and the first base station transmits the signals to the UE and the second base station respectively on the UE and the time frequency resource of the second base station by adopting wave beam formation according to the position information of the UE and the second base station. The invention can avoid interference in a combining way of wave beam formation and time frequency resource dispatch.
Description
Technical field
The present invention relates to mobile communication technology, method and the base station of particularly in a kind of hierarchical network, avoiding signal to disturb.
Background technology
In mobile communications network, along with the growing requirement to data rate and covering, traditional provides the method for access can not meet the demands with macro base station, adopt cell splitting, and can be good at addressing this is that at hot zones or some lower powered base stations of indoor deployment (Home/Pico/Femto/Relay, household base station/Pico cell formula base station/femtocell base station/midsequent base station).This lower powered base station is a kind of base station equipment being applied under family's indoor environment, working environment or other little overlay environment, can make operator that high data rate, attractive business are more cheaply provided more.
Fig. 1 is layering networking schematic diagram, the Home eNB (home evolved base station) of take is example, in figure, in order to represent, distinguish, UE under base station is designated to MUE (Marco UE), Home eNB is designated to HeNB, UE under HeNB is designated to HUE (Home UE), and the basic structure of layering networking as shown in the figure.From the structure of hierarchical network above, can find out, from the direction of propagation, in hierarchical network, have two kinds of main interference types:
Descending interference is descending: that is to say in Marco UE and Home UE (family subscriber equipment) reception and always can be subject to the descending interference from Marco eNB (grand evolution base station) and Home eNB (home evolved base station).
Uplink interference is up: that is to say in Marco eNB and Home eNB reception and always can be subject to the uplink interference from Marco UE and Home UE.
The method that existing interference is avoided is mainly to divide and the angle of power control is disturbed alleviating of avoiding or disturb from running time-frequency resource, and its major programme is as follows:
1, the mode by static state/semi-static FDM realizes disturbing and avoids:
Fig. 2 is static state/semi-static FDM (Frequency Division Multiplexing, frequency division multiplexing) frequency diagram is avoided in interference, as shown in the figure, by distributing different running time-frequency resources for Marco eNB (being expressed as MeNB in figure) and Home eNB (being expressed as HeNB in figure), make the UE in Marco eNB and HeNB take different running time-frequency resources, thereby realize avoiding of disturbing.
The advantage of this scheme is to realize simply, but its deficiency is: resource utilization is lower.
2, the method for controlling by power realizes alleviating of disturbing:
Mutual by between Marco eNB and HeNB, or the measurement of wireless link obtains the information that corresponding up/down is disturbed, thereby the method for controlling by power, adjust the method for the reflection power of Marco eNB or HeNB and carry out alleviating of descending interference, and the transmitting power of adjustment UE realizes alleviating of uplink interference.
The advantage of this method is to have versatility, but its deficiency is: this is a kind of method of passive interference mitigation, simultaneously cannot guaranteed performance.
3, the mode of FDM+ power configuration:
Fig. 3 is that the frequency diagram with interference mitigation is avoided in the interference of FDM+ power configuration, as shown in the figure, by for Marco eNB and HeNB configure the grade of different running time-frequency resources and the transmitting power on different running time-frequency resources, thereby realize avoiding and alleviating of descending interference.
This method is a kind of improved procedure with respect to the mode of static state/semi-static FDM, but its deficiency is: still have the lower problem of FDM own resources utilization.
4, dynamic FDM+ICIC (Inter-Cell Interference Coordinate, Inter-Cell Interference Coordination):
Mutual by between Marco eNB and HeNB, or the method for the measurement of wireless link, know the disturbance regime on each running time-frequency resource of other community, and the method for controlling by scheduling and power, realizes alleviating and avoiding of interference.
This method is a kind of improved procedure with respect to the mode of static state/semi-static FDM, but its deficiency is: further do not utilize avoiding that spatial domain disturbs, interference mitigation and the performance avoided are limited to the time delay of Signalling exchange and the cycle of measurement in ICIC process simultaneously.
Summary of the invention
Technical problem solved by the invention has been to provide method and the base station of avoiding signal to disturb in a kind of hierarchical network.
A kind of avoid signal to disturb in hierarchical network method is provided in the embodiment of the present invention, has comprised the steps:
The first base station obtains user equipment (UE) and the second base station with respect to the positional information of the first base station, and described UE is the UE that belongs to the first base station;
The first base station obtains the running time-frequency resource information of the second base station;
The running time-frequency resource that the first base station adopts during to UE and the second base station transmitted signal according to the positional information scheduling of the running time-frequency resource information of the second base station and UE and the second base station;
The first base station according to the positional information of UE and the second base station adopt wave beam forming respectively on the running time-frequency resource of UE and the second base station to UE and the second base station transmitted signal.
A kind of base station is provided in the embodiment of the present invention, has comprised:
Position acquisition module, for obtaining other base stations of UE and hierarchical network with respect to the positional information of this base station, described UE is the UE that belongs to this base station;
Time-frequency acquisition module, for obtaining the running time-frequency resource information of other base stations of hierarchical network;
Scheduling of resource module, for the running time-frequency resource adopting during to other base stations transmitted signal in UE and hierarchical network according to the positional information scheduling of the running time-frequency resource information of other base stations of hierarchical network and positional information and UE;
Sending module, for according to the positional information of other base stations of UE and hierarchical network, adopt wave beam forming respectively on the running time-frequency resource of other base stations in UE and hierarchical network to other base station transmitted signals in UE and hierarchical network.
Beneficial effect of the present invention is as follows:
In the invention process, consider the situation that base station relative position is more fixing, when carrying out avoiding of spatial domain interference based on base station directional information, not only obtain subordinate's UE and the positional information of other base stations, also obtain the running time-frequency resource information of other base stations; And, according to running time-frequency resource information and the positional information of other base stations, and the running time-frequency resource that adopts during to UE and other base stations transmitted signal of the positional information of UE scheduling; Simultaneously, also according to the positional information of UE and other base stations adopt wave beam forming respectively on the running time-frequency resource of UE and other base stations to UE and other base station transmitted signals, thereby realized by the mode of wave beam forming and running time-frequency resource scheduling combination, disturb and avoid, realized and can further utilize avoiding that spatial domain disturbs.
Accompanying drawing explanation
Fig. 1 is layering networking schematic diagram in background technology;
Fig. 2 is that frequency diagram is avoided in the interference of static state/semi-static FDM in background technology;
Fig. 3 is that the frequency diagram with interference mitigation is avoided in the interference of FDM+ power configuration in background technology;
Fig. 4 is the method implementing procedure schematic diagram of avoiding signal to disturb in the embodiment of the present invention in hierarchical network;
Fig. 5 is interference avoidance scheme schematic diagram in spatial domain in the embodiment of the present invention;
Fig. 6 is architecture of base station schematic diagram in the embodiment of the present invention.
Embodiment
The technical scheme that prior art adopts is mainly to have provided from running time-frequency resource and power control angle the scheme of avoiding with interference mitigation of disturbing, consider that following base station always adopts the technology of many antennas, what the technical scheme providing in the embodiment of the present invention was disturbed by spatial domain avoids, obviously, this programme is a kind ofly can effectively strengthen the scheme avoid effect of disturbing.Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Fig. 4 is the method implementing procedure schematic diagram of avoiding signal to disturb in hierarchical network, as shown in the figure, when avoiding signal to disturb, can comprise the steps:
Step 401, the first base station obtain UE and the second base station with respect to the positional information of the first base station, and described UE is the UE that belongs to the first base station;
The running time-frequency resource that step 403, the first base station adopt during to UE and the second base station transmitted signal according to the positional information scheduling of the running time-frequency resource information of the second base station and UE and the second base station;
In enforcement, step 401 there is no inevitable sequential requirement with step 402.
In step 402, by each community oneself, for up/down row running time-frequency resource, take the statistics of situation or disturbance regime, the statistical information that can simultaneously up/down row running time-frequency resource be taken to situation or disturbance regime passes to other community alternately by minizone, user in scheduling Shi Ge community is by distributing different running time-frequency resources, thus the coordination of disturbing.At LTE (Long Term Evolution, Long Term Evolution) (the Inter-Cell Interference Coordinate of the ICIC between small area, Inter-Cell Interference Coordination) relevant information is mainly to transmit by X2 interface alternately, in 3GPP TS 36.423, provided about the load information interaction of minizone and described, wherein mainly comprised information as shown in the table.
| IE/Group Name | Prese nce | Range | IE type and reference | Semantics description | Critica lity | Assigned Criticality |
| Message Type | M | 9.2.13 | YES | ignore | ||
| Cell Information | M | YES | ignore | |||
| ＞Cell Information Item | 1to maxC elline NB | EACH | ignore | |||
| ＞＞Cell ID | M | ECGI 9.2. 14 | Id of the source cell | - | - | |
| ＞＞UL Interference Overload Indication | O | 9.2.17 | - | - |
| ＞＞UL High Interference Information | 0to maxC elline NB | - | - | |||
| ＞＞＞Target Cell ID | M | ECGI 9.2. 14 | Id of the cell for which the HII is meant | - | - | |
| ＞＞＞UL High Interference Indication | M | 9.2.18 | - | - | ||
| ＞＞Relative Narrowband Tx Power(RNTP) | O | 9.2.19 | - | - |
The wave beam forming technology adopting in step 404 channel information that to be base station estimate according to the channel information on terminal feedback or base station, on each physical antenna of making a start, introduced different weighted values, the signal that is transmitted into each user can be concentrated in a narrower beam area.Can strengthen user's received signal to noise ratio on the one hand, on the other hand, because the concentration of energy of transmitting is within a narrower orientation angle, to the interference of other users outside this direction, also can reduce.Receiving terminal is separated timing, weightings different on physical antenna is processed to a part of regarding channel variation as, can be used the same user dedicated reference symbols of processing through figuration once to estimate the equivalent fading channel (comprising the impact of actual channel fading and weighting figuration) that user experiences.
Principle from technical scheme provided by the invention, the interference being not limited between macro base station and low power base station is avoided, and equally also can be applied between macro base station and macro base station, the interference between low power base station and low power base station, between macro base station and low power base station etc. avoids.Mainly take the first base station has below provided implementation as macro base station, the second base station as low power base station as example.
Fig. 5 is spatial domain interference avoidance scheme schematic diagram.For convenience of description, the running time-frequency resource of supposing Marco eNB in figure is f, the running time-frequency resource of Home eNB 1 (being illustrated as HeNB1) is f1, the running time-frequency resource of Home eNB 2 (being illustrated as HeNB2) is f2, and wherein the running time-frequency resource f1 of Home eNB 1 and the running time-frequency resource f2 of HomeeNB 2 can be the same or different.What wherein f-f1 represented is other running time-frequency resource that does not comprise f1 running time-frequency resource, and what f-f2 represented is other running time-frequency resource that does not comprise f2 running time-frequency resource.
In enforcement, Marco eNB is according to the situation about taking with respect to the positional information of Marco eNB and the running time-frequency resource of HeNB of Marco UE and HeNB, Marco eNB adopts the mode of wave beam forming and running time-frequency resource combined dispatch to dispatch Marco UE, thereby realize disturbing, avoids.MUE in figure (Marco UE) refers to the UE that belongs to Marco eNB, and HUE (Home UE) refers to the UE that belongs to HeNB.
In enforcement, positional information comprises direction and coverage, thereby determines the scope of a direction.That is, positional information can comprise one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI (Precooding matrix indicator, pre-coding matrix information).Concrete, positional information can be:
1), geographical coordinate and/or coverage;
2), orientation angle and/or coverage;
3), channel information etc., the PMI that for example can carry out the estimation of the angle of arrival and represent directional information according to channel information.
In enforcement, while obtaining the second base station with respect to the positional information of the first base station in the first base station, can comprise:
By Operation and Maintenance, configure to obtain positional information; Or, by S1 or X2 interface and the second base station, obtain alternately positional information; Or, by eating dishes without rice or wine, measure and obtain positional information.
Concrete, positional information or the information relevant to position can obtain by networking side by calculating the parameter of positional information, also can obtain by the method for eating dishes without rice or wine to measure, and its mode can be divided into several as follows:
1), by Operation and Maintenance, configure: its positional information can be geographical coordinate and/or coverage.
2), mutual by S1 or X2 interface: its positional information can be any one in above-mentioned three kinds of positional informations, wherein for Relay, Signalling exchange between its base station is always undertaken by wireless channel, and its information is by the transmission of eating dishes without rice or wine.
3), eat dishes without rice or wine to measure: its positional information can be orientation angle and/or coverage or channel information etc.
4), implement, while being Relay base station in the second base station, can, by after Relay upward signal is measured, according to the angle of arrival, estimate to obtain positional information; For example, or descending channel information and/or the PMI that can carry directional information by measurement obtain positional information, obtain by broadband P MI.
Concrete, for Relay base station, its mode can be divided into several as follows:
A), the method can the angle of arrival estimated of its positional information macro base station is by Relay upward signal is measured and obtained, if its uplink signal strength surpasses some strength simultaneously, need to consider that its direction is disturbed to avoid,
B) or measure descending channel information etc., direct feedback channel information, or feed back a mode of carrying the PMI of angle information by calculating.
Seen from the above description, Marco eNB need to know that HeNB is with respect to the positional information of Marco eNB, for this directional information, can obtain by the Signalling exchange between Marco eNB and HeNB, concrete directional information can be that HeNB is with respect to the angle information of Marco eNB, or the geographical location information of HeNB, thereby Marco eNB can be known by calculating the directional information of current HeNB.Simultaneously for Relay is this, there is the mutual low power base station of wireless channel, can measure its angle of arrival or an out of Memory parameter that can obtain by calculating of feedback by upward signal.For example: PMI information or carry the channel information of directional information.
In enforcement, while obtaining the running time-frequency resource information of the second base station in the first base station, can comprise:
By network terminal configuration information, obtain the running time-frequency resource information of the second base station;
Or, by S1 or X2 interface, obtain alternately the running time-frequency resource information of the second base station.
Concrete, when obtaining alternately the running time-frequency resource information of the second base station by S1 or X2 interface, can pass through RNTP (Relative Narrowband Tx power indicator, Relative Narrowband TX Power indication) and/or the indication of DL-HII (DL-High Interference Indicator, descending high interference indication) obtain the running time-frequency resource information of the second base station.
For dynamic situation, at the indicating mode by DL-HII, obtain in the running time-frequency resource information of the second base station, DL-HII and UL-HII (UL-High Interference Indicator, the indication of up high interference) implication is consistent, is all the frequency resource that needs interference coordination/avoid in indication current base station.
Concrete, Marco eNB need to know that the frequency spectrum of current each HeNB takies situation, the mode of knowing can be as follows:
Adopt static state/semi-static spectrum division, network terminal configuration information or obtain alternately by S1 or X2 interface.
Dynamic frequency is divided, by the RNTP indication information of HeNB, thereby know the situation that takies of the running time-frequency resource of current HeNB, for this lower powered base station of HeNB, macro base station can obtain its frequency information by network side, and concrete mode can be that S1 or X2 interface are mutual, wherein for Relay, Signalling exchange between its base station is always undertaken by wireless channel, and its information is by the transmission of eating dishes without rice or wine.
In enforcement, while obtaining the positional information of the second base station and running time-frequency resource information in the first base station, can also comprise:
The second base station that the first base station obtains is pre-configured definite according to coverage planning;
Or, the second base station that the first base station obtains is the base station of reporting position information and running time-frequency resource information, this base station is recording the RS of the first base station (reference signals, reference signal) RSRP of signal (Reference Signal Received Power, when Reference Signal Received Power) intensity surpasses threshold value, reporting position information and running time-frequency resource information.
Concrete, definite mode of the target BS set that above-mentioned positional information and frequency occupation information need to transmit can:
1), Operation and Maintenance configuration method of determining range is the pre-configured adjacent base station of coverage planning.
2), low power base station is by measuring macro base station signal strength signal intensity (RSRP), the RSRP intensity that records macro base station RS signal surpasses the macro base station set of certain limit, sends its positional information to the set of corresponding macro base station.By low power base station, initiatively initiated the information interaction of report position information.
In enforcement, while obtaining Marco UE with respect to the positional information of the first base station in the first base station, can comprise:
The angle of arrival of measuring Marco UE by upward signal obtains positional information; Or the PMI information of feeding back by MarcoUE and/or the channel information that carries directional information obtain positional information.
Concrete, Marco eNB need to know that Marco UE is with respect to the directional information of Marco eNB, mainly can measure its angle of arrival by upward signal, and feeds back an out of Memory parameter that can obtain by calculating by UE.For example: PMI information or carry the channel information of directional information.
By above-mentioned enforcement, Marco eNB has known the directional information of relevant HeNB and the running time-frequency resource that each relevant HeNB takies, Marco eNB is according to the directional information of Marco UE, determine beam direction, the down time-frequency resource that the running time-frequency resource scheduling Marco UE that simultaneously Marco eNB takies according to the directional information of relevant HeNB and each relevant HeNB takies, if Marco UE is positioned near or the direction of HeNB, Marco eNB need to avoid Marco UE and HNB to take identical running time-frequency resource (as the MUE2 in Fig. 5 and MUE3) by scheduling so, if Marco UE is away from outside HeNB or the direction in HeNB, Marco eNB can dispatch the down time-frequency resource (as the MUE1 in Fig. 5) of the multiplexing current HeNB of Marco UE so.That is,, while determining that in the first base station Marco UE is positioned at the direction of the second base station, can comprise:
The first base station during to Marco UE and the second base station transmitted signal, adopts different running time-frequency resources;
Or, the transmitting power adopting while reducing the first base station to Marco UE transmitted signal;
Or, the modulating-coding grade adopting while reducing the first base station to Marco UE transmitted signal.
, in force, can be:
1), Marco eNB need to be by network side or the method for eating dishes without rice or wine to measure know that low power base station is with respect to the directional information of Marco eNB, and the running time-frequency resource of HeNB situation about taking.
2), Marco eNB according to Marco UE the directional information and 1 with respect to Marco eNB) in prior information, determine the running time-frequency resource of Marco UE scheduling and the direction (or weights of figuration) of wave beam, generally, the beam direction of Marco eNB transmitting always points to the direction of Marco UE as much as possible.Wherein:
A), if Marco UE is positioned at the direction of low power base station, its interference mitigation or the mode of avoiding can also be as follows:
(1), can avoid adopting same running time-frequency resource with low power base station by the running time-frequency resource of scheduling Marco UE;
(2), the mode that also can control by power, adopt lower transmitting power;
(3) thereby, also can adopt lower modulating-coding grade to guarantee the reliability of wireless link.
B) if Marco UE is positioned at outside the direction of low power base station, its running time-frequency resource can adopt same running time-frequency resource with low power base station so.
With example, describe again below.
Execution mode one:
The present embodiment describes as example take the home-use low power base station of HeNB class.The present embodiment has been described the mode that HeNB initiatively sends information,, the second base station that the first base station obtains is the base station of reporting position information and running time-frequency resource information, this base station when the RSRP intensity that records the RS signal of the first base station surpasses threshold value, reporting position information and running time-frequency resource information.Can be as follows in concrete enforcement:
1), HeNB can, by measuring the RS signal of current Marco eNB, can be known current channel information.
2), HeNB can be according to the RSRP intensity of the RS signal of the current all base stations that measure, record macro base station RSRP signal strength signal intensity over the macro base station set of certain limit, HeNB needs initiatively to initiate the report for current macro base station set, and positional information, coverage information and the frequency of report HeNB itself take situation information.The content of specifying information is as the description in technical scheme above.
Execution mode two:
The present embodiment has the mutual low power base station of eating dishes without rice or wine and describes as example take Relay etc.The present embodiment has been described the mode that Marco eNB obtains positional information and running time-frequency resource information, that is, while obtaining the second base station with respect to the positional information of the first base station in the first base station, by eating dishes without rice or wine, measure and obtain positional information.Can be as follows in concrete enforcement:
1), Marco eNB can measure its angle of arrival according to the up wireless signal of current Relay.
2), the Marco eNB of Relay ownership can be according to the mutual acquisition of space interface signaling for Relay's.Coverage and running time-frequency resource take the information of situation.
3) positional information, coverage and the running time-frequency resource that, other Marco eNB can obtain alternately by the Marco eNB with Relay ownership Relay takies the information of situation.
Execution mode three:
The low power base station of the Pico class that the planning of the present embodiment Jiang Yi operator is disposed is that example describes.The present embodiment has been described the mode that Marco eNB obtains positional information and running time-frequency resource information,, while obtaining the second base station with respect to the positional information of the first base station in the first base station, by Operation and Maintenance, configures to obtain positional information that is; Can be as follows in concrete enforcement:
1), Marco eNB can obtain by operation maintenance center geographical location information and the coverage information of Pico.
2), operation maintenance center can be according to the planning situation of network, the geographical location information of Pico and coverage information and running time-frequency resource are taken to situation information and issue and need to disturb the base station (adjacent base station) of avoiding.
Based on same inventive concept, a kind of base station is also provided in the embodiment of the present invention, because the principle of dealing with problems in this base station is similar to a kind of avoid signal to disturb in hierarchical network method, so the enforcement of this base station can, referring to the enforcement of method, repeat part and repeat no more.
Fig. 6 is architecture of base station schematic diagram, as shown in the figure, in base station, can comprise:
Time-frequency acquisition module 602, for obtaining the running time-frequency resource information of other base stations of hierarchical network;
Scheduling of resource module 603, for the running time-frequency resource adopting during to other base stations transmitted signal in UE and hierarchical network according to the positional information scheduling of the running time-frequency resource information of other base stations of hierarchical network and positional information and UE;
Sending module 604, for according to the positional information of other base stations of UE and hierarchical network, adopt wave beam forming respectively on the running time-frequency resource of other base stations of UE and hierarchical network Shen to other base station transmitted signals in UE and hierarchical network.
In enforcement, when position acquisition module can be further used for other base stations in obtaining hierarchical network with respect to the positional information of this base station, by Operation and Maintenance, configure to obtain positional information; Or, by other base stations in S1 or X2 interface and hierarchical network, obtain alternately positional information; Or, by eating dishes without rice or wine, measure and obtain positional information.
In enforcement, when position acquisition module can be further used for other base stations in hierarchical network and is Relay base station, after relay upward signal is measured, according to the angle of arrival, estimate to obtain positional information; Or the descending channel information and/or the PMI that carry directional information by measurement obtain positional information.
In enforcement, position acquisition module can be further used for when obtaining UE with respect to the positional information of this base station, and the angle of arrival of measuring UE by upward signal obtains positional information; Or the PMI information of feeding back by UE and/or the channel information that carries directional information obtain positional information.
In enforcement, position acquisition module can be further used for obtaining and comprise one of following information or its combination: the positional information of geographical coordinate, coverage, orientation angle, channel information, PMI.
In enforcement, when time-frequency acquisition module can be further used for the running time-frequency resource information of other base stations in obtaining hierarchical network, by network terminal configuration information, obtain the running time-frequency resource information of the second base station; Or, by S1 or X2 interface, obtain alternately the running time-frequency resource information of the second base station.
In concrete enforcement, time-frequency acquisition module can also be further used for when obtaining alternately the running time-frequency resource information of the second base station by S1 or X2 interface, by the indication of RNTP and/or descending high interference indication DL-HII, obtains the running time-frequency resource information of the second base station.
In enforcement, when time-frequency acquisition module can be further used for the positional information of other base stations in obtaining hierarchical network and running time-frequency resource information, other base stations in the hierarchical network obtaining are pre-configured definite according to coverage planning; Or other base stations in the hierarchical network obtaining are base stations of reporting position information and running time-frequency resource information, this base station when the RSRP intensity that records the RS signal of this base station surpasses threshold value, reporting position information and running time-frequency resource information.
In enforcement, sending module can be further used for when determining that UE is arranged in the direction of other base stations of hierarchical network, during to other base stations transmitted signal in UE and hierarchical network, adopts different running time-frequency resources; Or, the transmitting power adopting while reducing to UE transmitted signal; Or, the modulating-coding grade adopting while reducing to UE transmitted signal; In the first base station, determine when the direction of UE and the second base station is different, the first base station during to UE and the second base station transmitted signal, adopts different running time-frequency resources; Or the first base station during to UE and the second base station transmitted signal, adopts identical running time-frequency resource.
For convenience of description, the each several part of the above device is divided into various modules with function or unit is described respectively.Certainly, when enforcement is of the present invention, the function of each module or unit can be realized in same or a plurality of software or hardware.
By above-mentioned execution mode, can be found out, in technical scheme provided by the invention, by other base stations in the acquisition hierarchical network of network side or the mutual mode of eating dishes without rice or wine with respect to the directional information of Marco eNB, and the running time-frequency resource information of this base station, and disturb and avoid by the method for wave beam forming and running time-frequency resource scheduling combination, thereby can further utilize avoiding that spatial domain disturbs.
Technical scheme provided by the invention is being disturbed based on spatial domain while avoiding, consider in the more fixing situation of base station relative position, provided the avoiding method that disturb in a kind of spatial domain based on base station directional information, can be also effective enhancing of the interference avoidance method based on FDM simultaneously.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (14)
1. a method of avoiding signal to disturb in hierarchical network, is characterized in that, comprises the steps:
The first base station obtains user equipment (UE) and the second base station with respect to the positional information of the first base station, and described UE is the UE that belongs to the first base station;
The first base station obtains the running time-frequency resource information of the second base station;
The running time-frequency resource that the first base station adopts during to UE and the second base station transmitted signal according to the positional information scheduling of the running time-frequency resource information of the second base station and UE and the second base station;
The first base station according to the positional information of UE and the second base station adopt wave beam forming respectively on the running time-frequency resource of UE and the second base station to UE and the second base station transmitted signal;
The first base station is during to UE and the second base station transmitted signal, if determine that UE is positioned at the direction of the second base station: adopt different running time-frequency resources; Or, the transmitting power adopting while reducing the first base station to UE transmitted signal; Or, the modulating-coding grade adopting while reducing the first base station to UE transmitted signal;
The first base station is during to UE and the second base station transmitted signal, if determine that UE is different from the direction of the second base station: adopt different running time-frequency resources; Or, adopt identical running time-frequency resource;
Described the second base station is pre-configured definite according to coverage planning;
Or described the second base station is the base station of reporting position information and running time-frequency resource information, this base station when the Reference Signal Received Power RSRP intensity that records the reference signal RS of the first base station surpasses threshold value, reporting position information and running time-frequency resource information.
2. the method for claim 1, is characterized in that, while obtaining the second base station with respect to the positional information of the first base station in the first base station, comprising:
By Operation and Maintenance, configure to obtain positional information;
Or, by S1 or X2 interface and the second base station, obtain alternately positional information;
Or, by eating dishes without rice or wine, measure and obtain positional information.
3. method as claimed in claim 2, is characterized in that, when described the second base station is relaying Relay base station,
After Relay upward signal is measured, according to the angle of arrival, estimate to obtain positional information;
Or the descending channel information and/or the pre-coding matrix information PMI that carry directional information by measurement obtain positional information.
4. the method for claim 1, is characterized in that, while obtaining UE with respect to the positional information of the first base station in the first base station, comprising:
The angle of arrival of measuring UE by upward signal obtains positional information;
Or the PMI information of feeding back by UE and/or the channel information that carries directional information obtain positional information.
5. the method as described in as arbitrary in claim 1 to 4, is characterized in that, described positional information comprises one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI.
6. the method for claim 1, is characterized in that, while obtaining the running time-frequency resource information of the second base station in the first base station, comprising:
By network terminal configuration information, obtain the running time-frequency resource information of the second base station;
Or, by S1 or X2 interface, obtain alternately the running time-frequency resource information of the second base station.
7. method as claimed in claim 6, is characterized in that, when obtaining alternately the running time-frequency resource information of the second base station by S1 or X2 interface, by the indication of RNTP and/or descending high interference indication DL-HII, obtains the running time-frequency resource information of the second base station.
8. a base station, is characterized in that, comprising:
Position acquisition module, for obtaining other base stations of UE and hierarchical network with respect to the positional information of this base station, described UE is the UE that belongs to this base station;
Time-frequency acquisition module, for obtaining the running time-frequency resource information of other base stations of hierarchical network;
Scheduling of resource module, for the running time-frequency resource adopting during to other base stations transmitted signal in UE and hierarchical network according to the positional information scheduling of the running time-frequency resource information of other base stations of hierarchical network and positional information and UE;
Sending module, for according to the positional information of other base stations of UE and hierarchical network, adopt wave beam forming respectively on the running time-frequency resource of other base stations in UE and hierarchical network to other base station transmitted signals in UE and hierarchical network;
Described sending module is further used for when determining that UE is arranged in the direction of other base stations of hierarchical network, during to other base stations transmitted signal in UE and hierarchical network, adopts different running time-frequency resources; Or, the transmitting power adopting while reducing to UE transmitted signal; Or, the modulating-coding grade adopting while reducing to UE transmitted signal; When the direction of determining UE and other base stations is different, during to UE and other base stations transmitted signal, adopt different running time-frequency resources; Or, during to UE and other base stations transmitted signal, adopt identical running time-frequency resource;
Other base stations in the hierarchical network obtaining are pre-configured definite according to coverage planning; Or other base stations in the hierarchical network obtaining are base stations of reporting position information and running time-frequency resource information, this base station when the RSRP intensity that records the RS of this base station surpasses threshold value, reporting position information and running time-frequency resource information.
9. base station as claimed in claim 8, is characterized in that, when position acquisition module is further used for other base stations in obtaining hierarchical network with respect to the positional information of this base station, by Operation and Maintenance, configures to obtain positional information; Or, by other base stations in S1 or X2 interface and hierarchical network, obtain alternately positional information; Or, by eating dishes without rice or wine, measure and obtain positional information.
10. base station as claimed in claim 9, is characterized in that, when position acquisition module is further used for other base stations in hierarchical network and is Relay base station, after Relay upward signal is measured, according to the angle of arrival, estimates to obtain positional information; Or the descending channel information and/or the PMI that carry directional information by measurement obtain positional information.
11. base stations as claimed in claim 8, is characterized in that, position acquisition module is further used for when obtaining UE with respect to the positional information of this base station, and the angle of arrival of measuring UE by upward signal obtains positional information; Or the PMI information of feeding back by UE and/or the channel information that carries directional information obtain positional information.
12. base stations as described in as arbitrary in claim 8 to 11, is characterized in that, position acquisition module is further used for obtaining and comprises one of following information or its combination: the positional information of geographical coordinate, coverage, orientation angle, channel information, PMI.
13. base stations as claimed in claim 8, is characterized in that, when time-frequency acquisition module is further used for the running time-frequency resource information of other base stations in obtaining hierarchical network, obtain the running time-frequency resource information of other base stations by network terminal configuration information; Or, by S1 or X2 interface, obtain alternately the running time-frequency resource information of other base stations.
14. base stations as claimed in claim 13, it is characterized in that, time-frequency acquisition module is further used for when obtaining alternately the running time-frequency resource information of other base stations by S1 or X2 interface, by the indication of RNTP and/or descending high interference indication DL-HII, obtains the running time-frequency resource information of other base stations.
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| CN200910236829.0A CN102014504B (en) | 2009-10-30 | 2009-10-30 | Method for preventing signal interference in hierarchical network and base station |
| PCT/CN2010/077938 WO2011050687A1 (en) | 2009-10-30 | 2010-10-21 | Method for avoiding signal interference in hierarchical network and base station thereof |
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| CN200910236829.0A CN102014504B (en) | 2009-10-30 | 2009-10-30 | Method for preventing signal interference in hierarchical network and base station |
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| US9686000B2 (en) * | 2011-04-15 | 2017-06-20 | Futurewei Technologies, Inc. | System and method for two-way relaying with beamforming |
| CN102355292A (en) * | 2011-08-05 | 2012-02-15 | 中兴通讯股份有限公司 | Method and apparatus for parameter transmission, and method and apparatus for parameter generation |
| CN102932836B (en) * | 2011-08-12 | 2017-11-10 | 邳州高新区生物医药研究院有限公司 | A kind of switching handling method and system |
| CN103002497A (en) * | 2011-09-08 | 2013-03-27 | 华为技术有限公司 | AAS (advanced antenna system) based information interaction method, AAS based information interaction system, UE (user equipment) and base station |
| CN103517282B (en) * | 2012-06-27 | 2016-11-16 | 华为技术有限公司 | The acquisition methods of usable spectrum and device |
| CN102984710B (en) * | 2012-12-14 | 2015-06-17 | 京信通信系统（中国）有限公司 | Method and device for allocating channel resources |
| CN104469688B (en) * | 2013-09-22 | 2018-10-26 | 中国移动通信集团公司 | A kind of method, apparatus and system of precoding |
| CN104581746B (en) * | 2014-12-02 | 2017-12-12 | 中国船舶重工集团公司第七一六研究所 | A kind of antenna location mode and antenna system based on LTE communication standard |
| US10419172B2 (en) * | 2015-06-21 | 2019-09-17 | Lg Electronics Inc. | Downlink power allocation method for must transmission in wireless communication system and apparatus therefor |
| CN107889205B (en) * | 2016-09-30 | 2021-08-20 | 华为技术有限公司 | Uplink power control method and device |
| CN111885719A (en) * | 2017-05-04 | 2020-11-03 | 华为技术有限公司 | Method and apparatus for wireless communication |
| CN116015388A (en) * | 2017-07-21 | 2023-04-25 | 南通朗恒通信技术有限公司 | Method and device used for beamforming in user and base station |
| CN109076597B (en) * | 2018-08-10 | 2022-10-04 | 北京小米移动软件有限公司 | FBE data transmission method, device and storage medium |
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| WO2011050687A1 (en) | 2011-05-05 |
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