CN102088780A - Method and base station for avoiding signal interference in hierarchical network - Google Patents
Method and base station for avoiding signal interference in hierarchical network Download PDFInfo
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Abstract
The invention discloses a method and a base station for avoiding signal interference in a hierarchical network. The method comprises the following steps that: a first base station determines a second base station required to be subjected to signal interference avoiding; the first base station acquires position information of user equipment belonging to the first base station and position information of the second base station which is relative to the first base station; the first base station acquires time frequency resource information of the user equipment belonging to the first base station; the first base station determines the user equipment belonging to the first base station in the direction of the second base station according to the position information of the user equipment belonging to the first base station and position information of the second base station; the first base station determines the time frequency resource information used by the user equipment belonging to the first base station in the direction of the second base station; and the first base station instructs the second base station to avoid scheduling the time frequency resource information. By the method and the base station, interference can be avoided.
Description
Technical field
The present invention relates to mobile communication technology, method and the base station of avoiding signal to disturb in particularly a kind of hierarchical network.
Background technology
In mobile communications network, along with growing requirement to data speed 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, family base station/Pico cell formula base station/femtocell formula base station/midsequent base station).This lower powered base station is a kind of base station equipment that is applied under family's indoor environment, working environment or other the little overlay environment, can make operator that high data rate, attractive business more cheaply are provided more.
Fig. 1 is a layering networking schematic diagram, with Home eNB (family evolution base station) is example, distinguish in order to represent among the figure, UE under the base station is designated MUE (Marco UE), Home eNB is designated HeNB, UE under the HeNB is designated HUE (Home UE), and then the basic structure of layering networking as shown in the figure.From the structure of top hierarchical network as can be seen, hierarchical network, there are two kinds of main interference types from the direction of propagation:
Descending interference is descending: that is to say the descending interference that always can be subjected in Marco UE and Home UE (family subscriber equipment) reception from Marco eNB (grand evolution base station) and Home eNB (family evolution base station).
Uplink interference is up: that is to say the uplink interference that always can be subjected in Marco eNB and Home eNB reception from Marco UE and Home UE.
The method that existing interference is avoided mainly be from the angle that running time-frequency resource is divided and power is controlled disturb avoid or disturb alleviate, 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 with Home eNB (being expressed as HeNB among the figure) for Marco eNB (being expressed as MeNB among the figure), make Marco eNB take different running time-frequency resources with UE among the HeNB, thus avoiding of realizing disturbing.
The advantage of this scheme is to realize simply, but its deficiency is: resource utilization is lower.
2, the method by power control realizes alleviating of interference:
Mutual by between Marco eNB and the HeNB, perhaps the measurement of Radio Link obtain corresponding on/information of following property interference, thereby method by power control, 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 can't guaranteed performance.
3, the mode of FDM+ power configuration:
Fig. 3 avoids frequency diagram with interference mitigation for the interference of FDM+ power configuration, as shown in the figure, by the running time-frequency resource that to be Marco eNB different with the HeNB configuration and the grade of 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: the lower problem of FDM own resources utilization is still arranged.
4, dynamic FDM+ICIC (Inter-Cell Interference Coordinate, Inter-Cell Interference Coordination):
Mutual by between Marco eNB and the HeNB, the perhaps method of the measurement of Radio Link is known the disturbance regime on each running time-frequency resource of other sub-district, by the method for scheduling and power control, 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 the spatial domain disturbs, interference mitigation and the performance avoided are subject to the time delay of Signalling exchange in the ICIC process and the cycle of measurement 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.
The method of avoiding signal to disturb in a kind of hierarchical network is provided in the embodiment of the invention, has comprised the steps:
First base station is determined to carry out signal and is disturbed second base station of avoiding;
First base station obtains the user equipment (UE) that belongs to first base station and second base station positional information with respect to first base station;
First base station obtains the UE running time-frequency resource information that belongs to first base station;
The UE that belongs to first base station on the direction of second base station is determined according to the positional information that belongs to the UE of first base station and second base station in first base station;
The employed running time-frequency resource information of the UE that belongs to first base station on the direction of second base station is determined in first base station;
First base station indicates second base station to avoid dispatching this running time-frequency resource information.
The method of avoiding signal to disturb in a kind of hierarchical network is provided in the embodiment of the invention, has comprised the steps:
Second base station receives the indication of first base station, the running time-frequency resource information that need avoid when comprising scheduling in the described indication;
Second base station when dispatching running time-frequency resource, avoids using the running time-frequency resource that comprises in the indication by indication.
A kind of base station is provided in the embodiment of the invention, has comprised:
The base station determination module is used for determining to carry out signal and disturbs first base station of avoiding;
Position information acquisition module is used to obtain the user equipment (UE) that belongs to this base station and first base station positional information with respect to this base station;
The resource information acquisition module is used to obtain the UE running time-frequency resource information that belongs to this base station;
The resource information determination module, be used for determining the employed running time-frequency resource information of the UE that belongs to this base station on the direction of first base station according to belonging to the UE of this base station and the positional information of first base station is determined behind the UE that belongs to this base station on the direction of first base station;
Indicating module is used to indicate first base station to avoid dispatching this running time-frequency resource information.
A kind of base station is provided in the embodiment of the invention, has comprised:
Receiver module is used to receive the indication of other base stations, the running time-frequency resource information that need avoid when comprising scheduling in the described indication;
Scheduler module is used for by indication avoiding using the running time-frequency resource that comprises in the indication when dispatching running time-frequency resource.
Beneficial effect of the present invention is as follows:
Owing in the invention process, consider the situation that the base station relative position is relatively more fixing, disturb based on the base station directional information avoid the time, obtain subordinate's the UE and the positional information of other base stations, also obtain the positional information of other base stations; Then, determine the running time-frequency resource that meeting be used on other base station directions, thereby indicate other base stations when the scheduling running time-frequency resource, to avoid the running time-frequency resource that use the base station, realized disturbing and avoided according to UE and other base station position informations.
Description of drawings
Fig. 1 is a layering networking schematic diagram in the background technology;
Fig. 2 avoids frequency diagram for the interference of static state/semi-static FDM in the background technology;
Fig. 3 avoids frequency diagram with interference mitigation for the interference of FDM+ power configuration in the background technology;
The method one implementing procedure schematic diagram of Fig. 4 for avoiding signal to disturb in the hierarchical network in the embodiment of the invention;
Fig. 5 is an interference avoidance scheme schematic diagram in spatial domain in the embodiment of the invention;
The method two implementing procedure schematic diagram of Fig. 6 for avoiding signal to disturb in the hierarchical network in the embodiment of the invention;
Fig. 7 is base station one structural representation in the embodiment of the invention;
Fig. 8 is base station two structural representations in the embodiment of the invention.
Embodiment
The technical scheme that prior art adopts mainly is to have provided the scheme of avoiding with interference mitigation of disturbing from running time-frequency resource and power control angle, consider the base-station node of low power base station as a new adding system, it should reduce the influence to existing systems as far as possible so, thereby the technical scheme that provides in the embodiment of the invention is from avoiding that the low power base station side is disturbed, 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.
The method one implementing procedure schematic diagram of Fig. 4 for avoiding signal to disturb in the hierarchical network as shown in the figure, can comprise the steps: when avoiding signal to disturb
The employed running time-frequency resource information of the UE that belongs to first base station on the direction of second base station is determined in step 405, first base station;
In the enforcement, step 402 there is no inevitable sequential requirement with step 403.
In step 406, by the statistics of each sub-district oneself for last/down time-frequency occupation condition or disturbance regime, can be simultaneously with on/statistical information of down time-frequency occupation condition or disturbance regime passes to other sub-district alternately by the minizone, user when scheduling in each sub-district is by the different running time-frequency resource of distribution, thus the coordination of disturbing.At LTE (Long Term Evolution, Long Term Evolution) ICIC (the Inter-Cell Interference Coordinate of minizone in, Inter-Cell Interference Coordination) relevant information mainly is 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 | 1?to 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 | 0?to 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 | O | 9.2.19 | - | - | ||
| ?Narrowband?Tx?Power(RNTP) |
By the principle of technical scheme provided by the invention as can be known, the interference that is not limited between macro base station and the low power base station is avoided, and equally also can be applied between macro base station and the macro base station, the interference between low power base station and the low power base station, between macro base station and the low power base station etc. avoids.Be that macro base station, second base station are that low power base station is that example has provided implementation mainly below with first base station.
Fig. 5 is a spatial domain interference avoidance scheme schematic diagram.For the convenience of describing, the running time-frequency resource of hypothesis Marco eNB is f among the figure, the running time-frequency resource that MeNB takies in Home eNB1 (being illustrated as HeNB1) direction scope is f1, the running time-frequency resource that MeNB takies in Home eNB2 (being illustrated as HeNB2) direction scope is f2, and wherein running time-frequency resource f1 and running time-frequency resource f2 can be the same or different.What wherein f-f1 represented is other running time-frequency resource that does not comprise the f1 running time-frequency resource, and what f-f2 represented is other running time-frequency resource that does not comprise the f2 running time-frequency resource.
In the enforcement, Marco eNB determines Marco UE on the HeNB direction according to the positional information with respect to Marco eNB of Marco UE and HeNB, determine the situation that the running time-frequency resource of Marco UE takies then, at last with its notice HeNB, make it avoid dispatching these running time-frequency resources, avoid thereby realize disturbing.MUE among the figure (Marco UE) is meant the UE that belongs to Marco eNB, and HUE (Home UE) is meant the UE that belongs to HeNB.
In the 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 for:
1), geographical coordinate and/or coverage;
2), orientation angle and/or coverage;
3), channel information etc., for example PMI that can carry out the estimation of the angle of arrival and represent directional information according to channel information.
In the enforcement, when obtaining second base station in first base station, can comprise with respect to the positional information of first base station:
Obtain the positional information of second base station from network side;
Under this mode, the position of known second base station of network terminal can be by the method notice of indication.
Or, obtain the positional information of second base station by the mode of eating dishes without rice or wine to measure.
Under this mode, can be by the mode of eating dishes without rice or wine to measure, the signal in upward signal, the random access procedure for example, and the channel estimation results of second base station feedback is determined the positional information of second base station.
Obtain the positional information of second base station from network side, under this mode, first base station can obtain the geographical location information of low power base station by the indication of network, thereby make that MeNB can be according to the estimation of positional information travel direction information, mainly can be applied to the sub-district that operator disposes, for example: pico, hotzone, Relay;
Or, disposing the positional information of obtaining second base station by Operation and Maintenance, under this mode, its positional information can be geographical coordinate and coverage;
Or, obtain the positional information of second base station alternately by S 1 or X2 interface and second base station, under this mode, 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 Channel Transmission of eating dishes without rice or wine;
Or, measure the positional information of obtaining second base station by eating dishes without rice or wine, under this mode, its positional information can be orientation angle and coverage or channel information etc.
The mode of obtaining the positional information of second base station by the mode of eating dishes without rice or wine to measure can comprise:
In concrete the enforcement, can determine the positional information of second base station according to the upward signal of second base station, under this mode, MeNB can pass through the estimation of the upward signal travel direction information of low power base station, for example: Relay;
Or, determine the positional information of second base station according to the signal in the second base station initial access process, under this mode, low power base station is when start, carry out a process that is similar to initial access, thereby make that MeNB can be according to the estimation of up signal travel direction information;
Or, determine the positional information of second base station according to the channel estimation results of second base station feedback, to be second base station carry out the result of channel estimating to the reference signal of first base station to described channel estimation results, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.Under this mode, low power base station is carried out channel estimating by the reference signal to MeNB, result with channel estimating feeds back to MeNB simultaneously, thereby make that MeNB can be according to the estimation of the channel information travel direction information of low power base station feedback, this mode goes for all deployment scenario, comprising: Pico, hotzone, Relay, femto and HeNB etc.
In the enforcement, be when the mutual base station type of free oral sex is arranged, can estimate to obtain positional information according to the angle of arrival in second base station by after upward signal is measured; Or, can obtain positional information by descending channel information and/or the PMI that directional information is carried in measurement, for example obtain by broadband P MI.
Concrete, for the Relay base station, its mode can be divided into following several:
A), its positional information macro base station can angle of arrival estimation approach obtains by the Relay upward signal is measured, if its uplink signal strength surpasses certain intensity simultaneously, needs then to consider that its direction is disturbed avoids;
B) or measure descending channel information etc., direct feedback channel information is perhaps by calculating mode of carrying the PMI of angle information of feedback.
By foregoing description as can be known, Marco eNB need be known the positional information of HeNB with respect to Marco eNB, can obtain by the Signalling exchange between Marco eNB and the HeNB for this directional information, concrete directional information can be the angle information of HeNB with respect to Marco eNB, or the geographical location information of HeNB, thereby Marco eNB can be known the directional information of current HeNB by calculating.Simultaneously have a mutual low power base station of wireless channel for Relay is this, can measure its angle of arrival or feed back one by upward signal can be by calculating the out of Memory parameter that obtains.For example: PMI information or carry the channel information of directional information.
In the enforcement, when indicating second base station to avoid dispatching this running time-frequency resource information in first base station, can comprise:
Indicate the second base station running time-frequency resource information by wire link or Radio Link by the network terminal configuration information;
Or, indicate the second base station running time-frequency resource information alternately by S1 or X2 interface.
Concrete, when indicating the second base station running time-frequency resource information alternately 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) indicate the second base station running time-frequency resource information.
For dynamic situation, in indicate the second base station running time-frequency resource information by the indicating mode of DL-HII, DL-HII and UL-HII (UL-High Interference Indicator, the indication of up high interference) implication is consistent, all is the frequency resource that needs interference coordination/avoid in the indication current base station.
Concrete, when Marco eNB need indicate the frequency spectrum of current each HeNB to take situation, the mode of indication can be as follows:
Adopt static state/semi-static spectrum division, network terminal configuration information or indicate alternately by S1 or X2 interface.
Dynamic frequency is divided, the situation that takies by RNTP indication information indication HeNB running time-frequency resource, for this lower powered base station of HeNB, macro base station can be indicated alternately by S1 or X2 interface, wherein for Relay, Signalling exchange between its base station is always undertaken by wireless channel, and its information is by the Channel Transmission of eating dishes without rice or wine.
In the enforcement, determine to carry out signal in first base station when disturbing second base station of avoiding, can also comprise:
Second base station that first base station is determined is pre-configured definite according to coverage planning;
Or, second base station that first base station is determined is the base station of reporting position information and running time-frequency resource information, this base station is at the RS that records 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, need the indication running time-frequency resource the target BS set definite mode can:
1), under definite mode of Operation and Maintenance configuration scope, it 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 the set of its positional information to corresponding macro base station.Initiatively initiate the information interaction of report position information by low power base station.
In the enforcement, when obtaining Marco UE in first base station, can comprise with respect to the positional information of first base station:
The angle of arrival of measuring Marco UE by upward signal obtains positional information; Or PMI information by MarcoUE feedback and/or the channel information that carries directional information obtain positional information.
Concrete, Marco eNB need be known the directional information of Marco UE with respect to Marco eNB, mainly can measure its angle of arrival by upward signal, and can be by calculating the out of Memory parameter that obtains by one of UE feedback.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 directional information of Marco UE and the running time-frequency resource that takies, Marco eNB determines the running time-frequency resource that the Marco UE in the HeNB direction takies according to the directional information of Marco UE, HeNB, then with its notice HeNB, like this, HeNB just can avoid these running time-frequency resources when the scheduling running time-frequency resource, thereby reaches the purpose of avoiding signal.For example, if Marco UE is positioned near or the direction of HeNB, need so to avoid HeNB and Marco UE to take identical running time-frequency resource (as MUE2 among Fig. 5 and MUE3) by scheduling, if Marco UE is away from HeNB or be in outside the direction of HeNB, MarcoeNB can dispatch the down time-frequency resource (as the MUE1 among Fig. 5) of the multiplexing current HeNB of Marco UE so.
By above-mentioned enforcement as seen, MeNB need be according to the directional information of low power base station, the directional information of MUE, and the frequency resource information that takies of MUE, determine MeNB need take which frequency resource (these frequency resource information can be the results of a statistics) in the current low power base station direction scope, indicate current low power base station when scheduling, to avoid using these running time-frequency resources then.The just f1 among Fig. 5, f2.
Accordingly, also provide the method for avoiding signal to disturb in second base station side in the embodiment of the invention, described below.
The method two implementing procedure schematic diagram of Fig. 6 for avoiding signal to disturb in the hierarchical network comprises the steps:
In the enforcement, when receiving the indication of first base station, can comprise in second base station:
Receive indication by wire link or Radio Link by the network terminal configuration information;
Or, receive indication alternately by S1 or X2 interface.
In the enforcement, when receiving indication alternately by S1 or X2 interface, can receive indication by the indication of RNTP and/or descending high interference indication DL-HII.
In the enforcement, can further include:
When second base station surpasses threshold value in the RSRP of the RS that records first base station intensity, to the first base station reporting position information and running time-frequency resource information.
By above-mentioned enforcement as seen, HeNB, need avoid dispatching on these frequencies according to the indication information that obtains when HeNB dispatches as far as possible.
In concrete the enforcement, as shown in Figure 5, MeNB need notify HeNB1, and in the direction scope of HeNB1, the frequency resource that MeNB takies is f1, and HeNB1 should avoid dispatching the resource of f1 as far as possible so, and its resource that preferentially takies is f-f1.The resource that corresponding HeNB2 preferentially takies is f-f2.
Describe with example more below.
Execution mode one:
Present embodiment will be that example describes with the home-use low power base station of HeNB class.Present embodiment has been described the mode that HeNB initiatively sends information, promptly, second base station that first base station obtains is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the RSRP intensity of the RS signal that records first base station, and reporting position information and running time-frequency resource information.Can be as follows in then concrete the enforcement:
1), HeNB can be known current channel information by measuring the RS signal of current Marco eNB.
2), HeNB can be according to the RSRP intensity of the RS signal of current all base stations that measure, record of the macro base station set of macro base station RSRP signal strength signal intensity above certain limit, HeNB needs the report of initiatively initiation for current macro base station set, and positional information, coverage information and the frequency of report HeNB itself take situation information.Description in the content of specifying information such as the top technical scheme.
Execution mode two:
It is that example describes that present embodiment will have the mutual low power base station of eating dishes without rice or wine with Relay etc.Present embodiment has been described the mode that Marco eNB obtains positional information, that is, when obtaining second base station with respect to the positional information of first base station in first base station, measure by eating dishes without rice or wine and to obtain positional information.Can be as follows in then concrete the 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 the space interface signaling information for the coverage of Relay.
3), other Marco eNB can obtain the positional information of Relay, the information of coverage alternately by the Marco eNB with the Relay ownership.
Execution mode three:
Present embodiment will plan that the low power base station of the Pico class of disposing is that example describes with operator.Present embodiment has been described the mode that Marco eNB obtains positional information, that is, when obtaining second base station with respect to the positional information of first base station in first base station, dispose by Operation and Maintenance and to obtain positional information; Can be as follows in then concrete the enforcement:
1), Marco eNB can obtain geographical location information and the coverage information of Pico by operation maintenance center.
2), operation maintenance center can be according to the planning situation of network, the geographical location information of Pico and coverage information are issued need be disturbed the base station of avoiding (adjacent base station).
Based on same inventive concept, a kind of base station also is provided in the embodiment of the invention, because the method for avoiding signal to disturb in this base station principle of dealing with problems and a kind of hierarchical network is similar, so the enforcement of this base station can be referring to the enforcement of method, the repetition part repeats no more.
Fig. 7 is base station one structural representation, as shown in the figure, can comprise in the base station:
Base station determination module 701 is used for determining to carry out signal and disturbs first base station of avoiding;
Position information acquisition module 702 is used to obtain the user equipment (UE) that belongs to this base station and first base station positional information with respect to this base station;
Resource information acquisition module 703 is used to obtain the UE running time-frequency resource information that belongs to this base station;
Resource information determination module 704, be used for determining the employed running time-frequency resource information of the UE that belongs to this base station on the direction of first base station according to belonging to the UE of this base station and the positional information of first base station is determined behind the UE that belongs to this base station on the direction of first base station;
Indicating module 705 is used to indicate first base station to avoid dispatching this running time-frequency resource information.
In the enforcement, position information acquisition module can comprise: first acquiring unit, and/or second acquisition unit, wherein:
First acquiring unit is used for obtaining from network side the positional information of first base station;
Second acquisition unit is used for obtaining by the mode of eating dishes without rice or wine to measure the positional information of first base station.
In the enforcement, first acquiring unit can also be further used for disposing the positional information of obtaining first base station by Operation and Maintenance; Or, obtain the positional information of first base station alternately by S1 or X2 interface and first base station; Or, measure the positional information of obtaining first base station by eating dishes without rice or wine.
In the enforcement, second acquisition unit can also be further used for determining according to the upward signal of first base station positional information of first base station; Or, determine the positional information of first base station according to the signal in the first base station initial access process; Or, determine the positional information of first base station according to the channel estimation results of first base station feedback, to be first base station carry out the result of channel estimating to the reference signal of this base station to described channel estimation results, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.
In the enforcement, it is when the mutual base station type of free oral sex is arranged that second acquisition unit can also be further used in first base station, after upward signal is measured, estimates to obtain positional information according to the angle of arrival; Or the descending channel information and/or the pre-coding matrix information PMI that carry directional information by measurement obtain positional information.
Position information acquisition module can also be further used for obtaining and comprise one of following information or its combined location information: geographical coordinate, coverage, orientation angle, channel information, PMI.
In the enforcement, indicating module can also be further used for indicating first base station by wire link or Radio Link by the network terminal configuration information when indicating first base station to avoid dispatching this running time-frequency resource information; Or, indicate first base station alternately by S1 or X2 interface.
In the enforcement, indicating module can also be further used for when indicating first base station alternately by S1 or X2 interface, indicates first base station by the indication of RNTP and/or descending high interference indication DL-HII.
In the enforcement, the base station determination module can also be further used for determining according to coverage planning is pre-configured when determining that need carry out signal disturbs first base station of avoiding; Or first base station of determining is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the Reference Signal Received Power RSRP of the reference signal RS that records this base station intensity, and reporting position information and running time-frequency resource information.
Fig. 8 is base station two structural representations, as shown in the figure, can comprise in the base station:
In the enforcement, receiver module can also be further used for receiving indication by wire link or Radio Link by the network terminal configuration information when receiving the indication of other base stations; Or, receive indication alternately by S1 or X2 interface.
In the enforcement, receiver module can also be further used for when receiving indication alternately by S1 or X2 interface, indicates the indication of DL-HII to receive indication by RNTP and/or descending high interference.
In the enforcement, can further include in the base station:
In the enforcement, the base station is low power base station preferably.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when enforcement is of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.
By above-mentioned execution mode as can be seen, in technical scheme provided by the invention, by other base stations in the acquisition hierarchical network of the network side or the alternant way of eating dishes without rice or wine with respect to the directional information of Marco eNB, and the running time-frequency resource that on this direction, affiliated UE used of Marco eNB, thereby can indicate in the hierarchical network other base stations to avoid using these running time-frequency resources, reach and disturb the purpose of avoiding.
Technical scheme provided by the invention is considered under the relatively more fixing situation of base station relative position, has provided a kind of avoiding method based on the base station directional information, also can be based on effective enhancing of the interference avoidance method of FDM simultaneously.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the 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, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented 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 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, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in 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 on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in 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.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then 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 to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (28)
1. the method for avoiding signal to disturb in the hierarchical network is characterized in that, comprises the steps:
First base station is determined to carry out signal and is disturbed second base station of avoiding;
First base station obtains the user equipment (UE) that belongs to first base station and second base station positional information with respect to first base station;
First base station obtains the UE running time-frequency resource information that belongs to first base station;
The UE that belongs to first base station on the direction of second base station is determined according to the positional information that belongs to the UE of first base station and second base station in first base station;
The employed running time-frequency resource information of the UE that belongs to first base station on the direction of second base station is determined in first base station;
First base station indicates second base station to avoid dispatching this running time-frequency resource information.
2. the method for claim 1 is characterized in that, when obtaining second base station with respect to the positional information of first base station in first base station, comprising:
Obtain the positional information of second base station from network side;
Or, obtain the positional information of second base station by the mode of eating dishes without rice or wine to measure.
3. method as claimed in claim 2 is characterized in that, obtains the positional information of second base station from network side, comprising:
Dispose the positional information of obtaining second base station by Operation and Maintenance;
Or, obtain the positional information of second base station alternately by S1 or X2 interface and second base station;
Or, measure the positional information of obtaining second base station by eating dishes without rice or wine.
4. method as claimed in claim 2 is characterized in that, obtains the positional information of second base station by the mode of eating dishes without rice or wine to measure, and comprising:
Determine the positional information of second base station according to the upward signal of second base station;
Or, determine the positional information of second base station according to the signal in the second base station initial access process;
Or, determine the positional information of second base station according to the channel estimation results of second base station feedback, to be second base station carry out the result of channel estimating to the reference signal of first base station to described channel estimation results, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.
5. method as claimed in claim 4 is characterized in that, described second base station is when the mutual base station type of free oral sex is arranged,
After upward signal is measured, estimate to obtain positional information according to the angle of arrival;
Or the descending channel information and/or the pre-coding matrix information PMI that carry directional information by measurement obtain positional information.
6. the method for claim 1 is characterized in that, when obtaining UE with respect to the positional information of first base station in first base station, comprising:
The angle of arrival of measuring UE by upward signal obtains positional information;
Or PMI information by UE feedback and/or the channel information that carries directional information obtain positional information.
7. as the arbitrary described method of claim 1 to 6, it is characterized in that described positional information comprises one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI.
8. the method for claim 1 is characterized in that, when indicating second base station to avoid dispatching this running time-frequency resource information in first base station, comprising:
Indicate second base station by wire link or Radio Link by the network terminal configuration information;
Or, indicate second base station alternately by S1 or X2 interface.
9. method as claimed in claim 8 is characterized in that, when indicating second base station alternately by S1 or X2 interface, indicates second base station by the indication of RNTP and/or descending high interference indication DL-HII.
10. the method for claim 1 is characterized in that, determines to carry out signal in first base station when disturbing second base station of avoiding, and comprising:
Second base station that first base station is determined is pre-configured definite according to coverage planning;
Or second base station that first base station is determined is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the Reference Signal Received Power RSRP of the reference signal RS that records first base station intensity, and reporting position information and running time-frequency resource information.
11. the method for avoiding signal to disturb in the hierarchical network is characterized in that, comprises the steps:
Second base station receives the indication of first base station, the running time-frequency resource information that need avoid when comprising scheduling in the described indication;
Second base station when dispatching running time-frequency resource, avoids using the running time-frequency resource that comprises in the indication by indication.
12. method as claimed in claim 10 is characterized in that, when receiving the indication of first base station in second base station, comprising:
Receive indication by wire link or Radio Link by the network terminal configuration information;
Or, receive indication alternately by S1 or X2 interface.
13. method as claimed in claim 12 is characterized in that, when receiving indication alternately by S1 or X2 interface, indicates the indication of DL-HII to receive indication by RNTP and/or descending high interference.
14. as the arbitrary described method of claim 11 to 13, it is characterized in that, further comprise:
When second base station surpasses threshold value in the RSRP of the RS that records first base station intensity, to the first base station reporting position information and running time-frequency resource information.
15. a base station is characterized in that, comprising:
The base station determination module is used for determining to carry out signal and disturbs first base station of avoiding;
Position information acquisition module is used to obtain the user equipment (UE) that belongs to this base station and first base station positional information with respect to this base station;
The resource information acquisition module is used to obtain the UE running time-frequency resource information that belongs to this base station;
The resource information determination module, be used for determining the employed running time-frequency resource information of the UE that belongs to this base station on the direction of first base station according to belonging to the UE of this base station and the positional information of first base station is determined behind the UE that belongs to this base station on the direction of first base station;
Indicating module is used to indicate first base station to avoid dispatching this running time-frequency resource information.
16. base station as claimed in claim 15 is characterized in that, position information acquisition module comprises: first acquiring unit, and/or second acquisition unit, wherein:
First acquiring unit is used for obtaining from network side the positional information of first base station;
Second acquisition unit is used for obtaining by the mode of eating dishes without rice or wine to measure the positional information of first base station.
17. base station as claimed in claim 16 is characterized in that, first acquiring unit is further used for disposing the positional information of obtaining first base station by Operation and Maintenance; Or, obtain the positional information of first base station alternately by S1 or X2 interface and first base station; Or, measure the positional information of obtaining first base station by eating dishes without rice or wine.
18. base station as claimed in claim 16 is characterized in that, second acquisition unit is further used for determining according to the upward signal of first base station positional information of first base station; Or, determine the positional information of first base station according to the signal in the first base station initial access process; Or, determine the positional information of first base station according to the channel estimation results of first base station feedback, to be first base station carry out the result of channel estimating to the reference signal of this base station to described channel estimation results, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.
19. base station as claimed in claim 18 is characterized in that, it is when the mutual base station type of free oral sex is arranged that second acquisition unit is further used in first base station, after upward signal is measured, estimates to obtain positional information according to the angle of arrival; Or the descending channel information and/or the pre-coding matrix information PMI that carry directional information by measurement obtain positional information.
20. base station as claimed in claim 15 is characterized in that, position information 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 PMI information by UE feedback and/or the channel information that carries directional information obtain positional information.
21., it is characterized in that position information acquisition module is further used for obtaining and comprises one of following information or its combined location information: geographical coordinate, coverage, orientation angle, channel information, PMI as the arbitrary described base station of claim 15 to 20.
22. base station as claimed in claim 15 is characterized in that, indicating module is further used for indicating first base station by wire link or Radio Link by the network terminal configuration information when indicating first base station to avoid dispatching this running time-frequency resource information; Or, indicate first base station alternately by S1 or X2 interface.
23. base station as claimed in claim 22 is characterized in that, indicating module is further used for when indicating first base station alternately by S1 or X2 interface, indicates first base station by the indication of RNTP and/or descending high interference indication DL-HII.
24. base station as claimed in claim 15 is characterized in that, the base station determination module is further used for determining according to coverage planning is pre-configured when determining that need carry out signal disturbs first base station of avoiding; Or first base station of determining is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the Reference Signal Received Power RSRP of the reference signal RS that records this base station intensity, and reporting position information and running time-frequency resource information.
25. a base station is characterized in that, comprising:
Receiver module is used to receive the indication of other base stations, the running time-frequency resource information that need avoid when comprising scheduling in the described indication;
Scheduler module is used for by indication avoiding using the running time-frequency resource that comprises in the indication when dispatching running time-frequency resource.
26. base station as claimed in claim 25 is characterized in that, receiver module is further used for receiving indication by wire link or Radio Link by the network terminal configuration information when receiving the indication of other base stations; Or, receive indication alternately by S1 or X2 interface.
27. base station as claimed in claim 26 is characterized in that, receiver module is further used for when receiving indication alternately by S1 or X2 interface, indicates the indication of DL-HII to receive indication by RNTP and/or descending high interference.
28. as the arbitrary described base station of claim 25 to 27, it is characterized in that, further comprise:
Reporting module is used for when the RSRP of the RS that records other base stations intensity surpasses threshold value, to this base station reporting position information and running time-frequency resource information.
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| CN200910241473.XA CN102088780B (en) | 2009-12-03 | 2009-12-03 | Method and base station for avoiding signal interference in hierarchical network |
| PCT/CN2010/079267 WO2011066787A1 (en) | 2009-12-03 | 2010-11-30 | Method and base station for avoiding signal interference in a layered network |
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| CN200910241473.XA CN102088780B (en) | 2009-12-03 | 2009-12-03 | Method and base station for avoiding signal interference in hierarchical network |
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| WO2011066787A1 (en) | 2011-06-09 |
| CN102088780B (en) | 2013-11-06 |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210623 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |