CN102065490B - Method and equipment for coordinating downlink transmitting power between base stations - Google Patents
Method and equipment for coordinating downlink transmitting power between base stations Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and equipment for coordinating downlink transmitting power between base stations. By applying the technical scheme of the embodiment of the invention, the coordination of downlink transmitting power between the base stations can be carried out under the condition of fully taking the ABS configuration information of an interference base station into account, so that the downlink interference between the base stations is reduced, the throughput of a system in the downlink direction is improved, the generation of conditions of interference, and the like caused by dispatching a cell edge user by mistake through continuously using an intercell interference eliminating technology in an isomorphism network under the condition of introducing ABS is prevented, and thereby the use experience of the user is improved and the communication quality of the system is guaranteed.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of coordination approach of downlink transmitting power between base stations and equipment.
Background technology
Along with the requirement of growing data rate and business load, traditional covers and provides the method for access can not satisfy the demands with macro base station individual layer.Adopt layered coverage, at hot zones or some lower powered base stations of indoor deployment, can be good at addressing this is that, low power base station common in prior art comprises: Home eNodeB(Home eNodeB), Pico(picocell) base station, Femto(Femto cell) base station, Relay(relaying) etc.This lower powered base station is a kind of base station equipment being applied under family's indoor environment, working environment or the little overlay environment of other focus, can make operator that high data rate, attractive business are more cheaply provided more.
In order to reduce the interference problem in layered coverage, introduced ABS(Almost Blank Subscribe, blank subframe almost) subframe, this subframe is configured in interference base station one side, conventionally in Macro(Microcell) in the network environment of base station and Pico base station, generally by Macro base station, ABS subframe is set, and in the network environment of Macro and Femto base station, by the Femto base station of closing with pattern, ABS subframe is set.The PDSCH(Physical Downlink Shared Channel of interference side in the subframe of ABS, downlink physical shared channel) with low-down power, send, but retain pilot signal CRS(Common Reference Signal, public reference signal simultaneously) (unless this subframe is again MBSFN subframe simultaneously).Because the interference of the ABS subframe of interference side is little with respect to normal sub-frames, therefore, edge customer can be dispatched to obtain higher performance in disturbed base station in this subframe.
In addition, interfered base station need to obtain the configuration of ABS, in the networking scene of Macro base station and Pico base station, Pico base station need to be told by X2 interface this configuration in Macro base station, and in Femto base station and Macro base station, Macro can be from OAM(Operation and Maintenance, operation and maintenance) obtain the ABS configuration of Femto base station in system.In the existing network architecture, the interface of setting up between base station is X2 interface.
According to the discussion ABS configuration packet of meeting, containing two bitmap, first bitmap is the set of all ABS subframes, the 2nd bitmap is the subset of first bitmap, is mainly used in the measurement of UE.For first bitmap, in different systems, there is the different cycle, for FDD(Frequency Division Duplexing, Frequency Division Duplexing (FDD)) system, this bitmap take 40ms to circulate as the cycle, and for TDD(Time Division Duplexing, time division duplex) system, different UL/DL(Uplink/Downlink, uplink/downlink) dispose the different cycles, for configuration 1-5, its cycle is 20ms, for configuration 0, being 70ms, is 60ms for configuration 6.
Due to the laying of above-mentioned multiple heterogeneous network node, or in network design, avoid the needs of blind area, UE may measure a plurality of cell signals in same place.In order to reduce network as far as possible, to UE, send the size of ABS configuration signal, and make UE measure multi-cell signals with unified ABS, can require to disturb with the ABS configuration of interfered cell (interfered cell may have a plurality of) to be consistent (keeping synchronizeing).In existing protocol, stipulated to use the ABS cycle between interface connection transmission different base station to configure:
(1), for FDD system, can be set to as 40ms.
(2), for TDD system, can, according to different TDD configuration configurations, may be set to 20ms/60ms/70ms.
Because only transmitting the ABS cycle now, network configures, cannot obtain No. SFN whether consistent to judge the ABS subframe of different base station Xia Liang community, when UE accesses under certain base station community, cannot know whether adjacent another base station Xia community ABS is corresponding from base station with self institute.
The FDD ABS cycle=40ms of take is example, if SFN difference=1 between two base stations, as shown in Figure 1, though two base stations appoint all from SFN=0, use the identical ABS cycle to configure, the ABS between base station can not be synchronously corresponding so.
System Frame Number is comprised of 10bits.The transmission of SFN host system message block MIB can represent the value of SFN: the systemFrameNumber(System Frame Number in the MIB message) most-significant byte of sign SFN, rear two the obtaining of implicit expression when P-BCH decodes of SFN.Because the MIB transmission cycle is 40ms, and within the transmission cycle, the 10ms of take sends 4 identical contents as interval, and these four times transmissions can be identified as respectively the low 2 of SFN according to sending order: 00/01/10/11.SFN take 1024 as the cycle, the corresponding time namely 10240ms be loop cycle once.
In existing technical scheme, LTE system for R8, introduced ICIC(Inter-Cell Interference Coordination, presence of intercell interference is adjusted) mechanism, in this mechanism, up direction, information (HII) notice of the ascending resource that the interfere information that base station is subject to oneself (OI) and following a period of time may take with high power is to target BS, its minimum transmission cycle agreement regulation is 20ms, and at down direction, base station can be own resource (RNTP) notice that may take with high power in following a period of time to target BS, and RNTP information is a bitmap, size is the number of its PRB, with 0 and 1, indicated it lower than sending thresholding still higher than sending thresholding respectively.
RNTP also comprises the thresholding of a down transmitting power, when transmitting power is 1 during higher than thresholding, otherwise is 0.It is 200ms that the minimum of descending RNTP sends cycle agreement regulation.Descending renewal rate is well below up, and it is more violent that main cause is that up interference source changes, and descending comparatively slow, therefore, do not wish that descending transmission frequency is too high, thereby, caused violent descending interference variations.Target BS is received after RNTP information, according to the indication of RNTP, adjusts the dispatching priority on edge customer and corresponding PRB.
As follows for the ABS Provisioning Policy between many base stations in prior art:
The disturbed impact that may be subject to a plurality of interference base stations, and the SFN of these interference base stations and ABS arrange and have difference more.For example a Pico community can be between two Macro communities, and its dispatched users just need to be considered two ABS subframe settings that Macro community is different so.In the prior art, corresponding schematic network structure as shown in Figure 2.
So for interfered base station, the subframe of these interference base stations, overlappingly can be divided into the parts such as Normal, Complementray, ABS according to different, specifically as shown in Figure 3.
In realizing the process of the embodiment of the present invention, applicant finds that prior art at least exists following problem:
The RNTP information that source base station sends in the ICIC of R8 is the occupation condition of predict future in a period of time, for each subframe, be the same, and in heterogeneous network, introduced ABS subframe, interfered base station is different for the scheduling of ABS and non-ABS subframe so, according to 3GPP RAN3 meeting conclusion, interference base station still can reduce power and go to send data or do not send out data completely in ABS subframe, therefore, the disturbed condition in ABS subframe from non-ABS subframe, be different.
For example: the center of Pico base station in community, there is no other interference sources except macro base station, he can dispatch edge customer and may take all PRB with high power in ABS subframe so, in the resource taking, with low-power, dispatches in non-ABS subframe at macro base station edge customer.
So, if according to the mode of R8, all subframes all adopt same RNTP, and the scheduling of interference base station and interfered base station and user disturb and can be affected so.And in some scene, as the situation of a plurality of interference sources, different subframe set are as Complementray subset, interfered base station can not be used all PRB resources with high power thereon, otherwise can cause strong jamming to the user of some interference base stations, therefore,, with respect to Normal set and ABS set, on its resource usage policy, also have different.
Moreover, in the prior art, the renewal of the ABS transmission cycle will be slower than the minimum 200ms of RNTP(), so, owing to thering is the situation that periodically may have as shown in Figure 4, occur.
Due to RNTP and ABS upgrade asynchronous, after RNTP information is received in Macro base station so and do not know that this information is for new ABS configuration or former ABS configuration (T3), and after may coming into force at new ABS, receive according to before the setting (T4) that produces of RNTP configuration.
Summary of the invention
The embodiment of the present invention provides a kind of coordination approach and equipment of downlink transmitting power between base stations, solves in prior art because inter base station interference causes the problem that cannot dispatch Cell Edge User.
For achieving the above object, the embodiment of the present invention provides a kind of coordination approach of downlink transmitting power between base stations on the one hand, comprising:
Interfered base station obtains the ABS configuration information of interference base station;
When described interfered base station sends RNTP message to described interference base station, described interfered base station, according to the ABS configuration information of described interference base station, is divided into different subframe set by corresponding all descending sub frames;
Described interfered base station is predicted the power resource allocation situation on different descending sub frames;
Described interfered base station is according to the result of described prediction, the identification information of the ABS configuration adopting during by the down transmitting power distribution condition in each subframe set and prediction sends to described interference base station, so that described interference base station is determined the down transmitting power of each subframe set according to corresponding information.
On the other hand, the embodiment of the present invention also provides a kind of base station, comprising:
Acquisition module, for obtaining the ABS configuration information of interference base station;
Processing module, for when described base station need to send RNTP message to described interference base station, the ABS configuration information of the interference base station obtaining according to described acquisition module, corresponding all descending sub frames are divided into different subframe set, and predict the power resource allocation situation on different descending sub frames;
Sending module, for predicting the outcome according to described processing module, the identification information of the ABS configuration adopting during by the down transmitting power distribution condition in each subframe set and prediction sends to described interference base station, so that described interference base station is determined the down transmitting power of each subframe set according to corresponding information.
On the other hand, the embodiment of the present invention also provides a kind of coordination approach of downlink transmitting power between base stations, comprising:
Interference base station is determined the ABS configuration information of self;
Described interference base station sends to interfered base station by the ABS configuration information of self;
Described interference base station is determined the down transmitting power of each subframe set according to described ABS configuration information;
Wherein, described interference base station also comprises after the ABS configuration information of self is sent to interfered base station:
The identification information of the ABS configuration that described interference base station adopts while receiving predicting the down transmitting power distribution condition in each the subframe set obtaining and predicting according to described ABS configuration information of described interfered base station transmission.
On the other hand, the embodiment of the present invention also provides a kind of base station, comprising:
Determination module, for determining the ABS configuration information of described base station self;
Sending module, for sending to interfered base station by the ABS configuration information of described base station self;
Processing module, for determining the down transmitting power of each subframe set according to the determined ABS configuration information of described determination module;
Wherein, also comprise:
Receiver module, for after described sending module sends to interfered base station by the ABS configuration information of described base station self, receive that described interfered base station sends according to described ABS configuration information, predict down transmitting power distribution condition in each the subframe set obtaining and prediction time the ABS that the adopts identification information that configures.
Compared with prior art, the embodiment of the present invention has the following advantages:
The embodiment of the invention discloses a kind of coordination approach and equipment of downlink transmitting power between base stations, by the technical scheme of the application embodiment of the present invention, can be in the situation that take into full account the ABS configuration information of interference base station, carry out the negotiation of downlink transmitting power between base stations, thereby, the throughput that reduces the descending interference between base station and improve the down direction of system, avoid in the situation that introducing ABS, the wrong dispatching cell edge customer that continue to use the inter-cell interference cancellation technology in homogenous networks and cause and the generation of the situations such as interference that cause, thereby improve user's experience, the communication quality of safeguards system.
Accompanying drawing explanation
Fig. 1 is the scene schematic diagram that between base station of the prior art, SFN exists difference;
Fig. 2 is the schematic diagram that Pico of the prior art community is present in two network configurations between Macro community;
Fig. 3 is the subframe structure schematic diagram of interference base station of the prior art;
Fig. 4 is the scene schematic diagram that ABS of the prior art upgrades;
Fig. 5 is the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations of proposing of the embodiment of the present invention;
The schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 is the coordination approach of a kind of downlink transmitting power between base stations of proposing of the embodiment of the present invention schematic flow sheet in implementing scene one;
Fig. 8 is the coordination approach of a kind of downlink transmitting power between base stations of proposing of the embodiment of the present invention schematic flow sheet in implementing scene two;
Fig. 9 is the distribution schematic diagram of a kind of subframe of proposing of the embodiment of the present invention;
Figure 10 is the coordination approach of a kind of downlink transmitting power between base stations of proposing of the embodiment of the present invention schematic flow sheet in implementing scene three;
Figure 11 is the coordination approach of a kind of downlink transmitting power between base stations of proposing of the embodiment of the present invention schematic flow sheet in implementing scene four;
Figure 12 is the coordination approach of a kind of downlink transmitting power between base stations of proposing of the embodiment of the present invention schematic flow sheet in implementing scene five;
Figure 13 is the structural representation of a kind of base station of embodiment of the present invention proposition;
Figure 14 is the structural representation of a kind of base station of embodiment of the present invention proposition.
Embodiment
As stated in the Background Art, traditional network is all homogeneous network, the capacity that single base station has been developed in present base station can approach the theoretical limit, and want to obtain more gain requirements, need to rely on the topology of network to obtain, therefore, future multiple wireless technology in can being jointly deployed in a region, improve the capacity of whole system, and the interference how reducing in heterogeneous network between base station is an important problem.
In heterogeneous network, can adopt the interference cancellation techniques (ICIC) between LTE system small area, but because the SFN between different districts is asynchronous and introduced the interference that ABS removes to eliminate interfered base station edge customer, so, continue to adopt the inter-cell interference cancellation technology in homogenous networks may cause community cannot dispatch the appearance of the situations such as edge customer.
Based on this, the embodiment of the present invention has proposed a kind of coordination approach of downlink transmitting power between base stations, for the throughput that reduces the descending interference between base station and improve the down direction of system.
As shown in Figure 5, the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations proposing for the embodiment of the present invention, the method specifically comprises the following steps:
Step S501, interfered base station obtain the ABS configuration information of interference base station.
Concrete, the processing procedure of this step specifically comprises:
Interfered base station receives interference base station by the Load Information(load information of X2 interface) the ABS configuration information that sends of message.
Wherein, ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
Step S502, when interfered base station sends RNTP message to interference base station, interfered base station, according to the ABS configuration information of interference base station, is divided into different subframe set by corresponding all descending sub frames.
The processing procedure of this step specifically comprises:
Interfered base station estimates according to the ABS configuration information of interference base station and each subframe the degree being interfered, and corresponding all descending sub frames are divided into different subframe set.
Step S503, interfered base station are predicted the power resource allocation situation on different descending sub frames.
The processing of this step is specially interfered base station and predicts the power resource allocation situation on different descending sub frames according to traffic performance and user distribution situation.
Step S504, interfered base station are according to the result of prediction, the identification information of the ABS configuration adopting during by the down transmitting power distribution condition in each subframe set and prediction sends to interference base station, so that interference base station is determined the down transmitting power of each subframe set according to corresponding information.
Wherein, the down transmitting power distribution condition in each subframe set, specifically comprises:
Subframe in each subframe set is the positional information in the cycle at an ABS;
Power situation in each subframe set on each resource location of each subframe;
The threshold information of down transmitting power in each subframe in each subframe set;
The shared OFDM symbolic number of Physical Downlink Control Channel in each subframe in each subframe set.
In concrete enforcement scene, the technical program also comprises:
When interfered base station receives the message of the interference prediction information that comprises each subframe that interference base station sends, interfered base station, according to the corresponding ABS identification information of message and corresponding ABS configuration information, adopts different resource allocation policies to different subframes.
Said process be the technical scheme that proposes of the embodiment of the present invention in the implementation of interfered base station side, corresponding, the implementation in interference base station side is described as follows.
As shown in Figure 6, the schematic flow sheet of a kind of cell switching method providing for the embodiment of the present invention, the method specifically comprises the following steps:
Step S601, interference base station are determined the ABS configuration information of self.
Step S602, interference base station send to interfered base station by the ABS configuration information of self.
The processing procedure of this step specifically comprises:
By the ABS configuration information of self, the Load Information message by X2 interface sends to interfered base station to interference base station.
Wherein, ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
Step S603, interference base station are determined the down transmitting power of each subframe set according to ABS configuration information.
In concrete implementation procedure, interference base station also comprises after the ABS configuration information of self is sent to interfered base station:
The identification information of the ABS configuration that interference base station adopts while receiving predicting the down transmitting power distribution condition in each the subframe set obtaining and predicting according to ABS configuration information of interfered base station transmission.
Wherein, the down transmitting power distribution condition in each subframe set, specifically comprises:
Subframe in each subframe set is the positional information in the cycle at an ABS;
Power situation in each subframe set on each resource location of each subframe;
The threshold information of down transmitting power in each subframe in each subframe set;
The shared OFDM symbolic number of Physical Downlink Control Channel in each subframe in each subframe set.
Compared with prior art, the embodiment of the present invention has the following advantages:
The embodiment of the invention discloses a kind of coordination approach and equipment of downlink transmitting power between base stations, by the technical scheme of the application embodiment of the present invention, can be in the situation that take into full account the ABS configuration information of interference base station, carry out the negotiation of downlink transmitting power between base stations, thereby, the throughput that reduces the descending interference between base station and improve the down direction of system, avoid in the situation that introducing ABS, the wrong dispatching cell edge customer that continue to use the inter-cell interference cancellation technology in homogenous networks and cause and the generation of the situations such as interference that cause, thereby improve user's experience, the communication quality of safeguards system.
In concrete application process, in conjunction with concrete enforcement scene, the technical scheme that the embodiment of the present invention is proposed is further described.
The embodiment of the present invention has proposed a kind of method of coordinating base station down transmitting power, its main thought is comprehensive self interference configuration or the interference configuration of adjacent base station and the difference between the frame number between base station in base station, to the inhomogeneity subframe of different adjacent base stations, indicates different down transmitting powers.
If current base station is interfered base station, corresponding processing procedure comprises:
(1) current base station need to be obtained the configuration information of the ABS of interference base station, in ABS information except comprising 1 bitmap information that is used to indicate ABS sub-frame configuration, 1 bitmap information that is used to indicate measurement, antenna port, whether apply outside ABS, also wrap the id information of ABS for distinguishing the entry-into-force time of former and later two ABS configurations and this ABS.
(2) when interfered base station sends RNTP information, need to estimate to receive the degree of interference according to ABS configuration and the subframe of different interference base stations, all descending sub frames are divided into different subframe set (as ABS subset, non-ABS subset and Complementary subset etc.).
(3) interfered base station is according to the distribution condition of the power resource on the different descending sub frames of prediction such as user distribution, traffic performance, and the descending power distribution condition in each different subframe set, and the ID of the ABS configuration that adopts of when prediction feeds back to interference base station.Wherein the descending power distribution condition in each subframe set can comprise three parts, first part indicated this set subframe at an ABS position in the cycle, the second part has been indicated the power situation on each resource location of each subframe in this set, and the 3rd part indicated in this set the thresholding of down transmitting power in each subframe.
(4) the descending interference prediction information of the interfered base station that interference base station basis receives and the resource that ABS ID determines user in each subframe are distributed.
If current base station is interference base station, corresponding processing procedure comprises:
(1) current base station configures different resource allocation conditions according to the ABS configuration pin of oneself to different descending sub frames, and this information is sent to interfered base station, also needs to comprise ABS ID in message.
(2) interfered base station receives after this information, according to the ABS configuration pin of ABS ID and the use of current subframe, different subframes is adopted to different resource allocation policies.This allocation strategy comprises three parts, first part indicated this set subframe at an ABS position in the cycle, the second part has been indicated the power situation on each resource location of each subframe in this set, and the 3rd part indicated in this set the thresholding of down transmitting power in each subframe.
Further, in conjunction with concrete application scenarios, be described as follows.
Implement scene one:
In this enforcement scene, a Pico A community is positioned at the centre of a Macro base station B institute Serving cell, and its interference source only need to be considered this Macro base station B.
Liang Ge community all adopts GPS to carry out synchronously and is all tdd mode, therefore, there is no the difference of SFN.In addition, two all 10M networkings of base station, the sub-frame configuration of up-downgoing is configuration 1, therefore, the cycle of two base station ABS is 20ms.
As shown in Figure 7, the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations proposing for the embodiment of the present invention in implementing scene one, specifically comprises the following steps:
Step S701, Macro base station B utilize X2 message Load Information to send the Reconfigurations of ABS in t0.
The new ID of the ABS of Macro base station B is 10, and remaining ABS information also comprises: indicate respectively ABS subframe and 2 bitmap for measuring, the information that the port information of Macro community and ABS configuration are used.
Step S702, Pico base station A receive at time t1 the new ABS configuration that Macro base station B sends, and calculate new up and descending resource distribution according to new ABS configuration.
Because the interference source of Pico base station A is mainly Macro base station B, so, Pico base station A calculates the descending resource of the user in non-ABS subframe and distributes.
Step S703, Pico base station A utilize X2 message Load Information to send HII, OI and RNTP information when time t2.
Wherein, the partial content that RNTP packets of information contains is as follows:
The ID:10 of ABS.
Subframe set: length is 20bit, all non-ABS subframes are designated 1, ABS subframe and are designated 0.
RNTP Per PRB: length is 50bit, wherein 0 to 35 bit is 0, represents that front 35 PRB are with the power emission lower than thresholding, after 15 bits be 1, represent that 15 PRB need to launch with the power higher than thresholding below.
RNTP?Threshold：-2。
Step S704, Macro base station A receive at t4 time point the X2 message Load Information that Pico base station A sends, find that the ABS ID in RNTP is 10, and currently used new ABS configuration, therefore, according to this ABS information, determined the scheduling resource of edge customer.
Implement scene two:
In this enforcement scene, a Pico A community is positioned at the marginal portion of a Macro base station B and Macro base station C institute Serving cell, and its interference source need to be considered Macro base station B and Macro base station C.
Macro base station B and Macro base station C adopt GPS to carry out synchronously, and each is also consistent constantly for both SFN.Pico base station A adopts other methods of synchronization, and therefore, the SFN of Pico base station A and Macro base station B and Macro base station C have a deviation, and three base stations are all fdd modes, and are all 10M networking.
As shown in Figure 8, the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations proposing for the embodiment of the present invention in implementing scene two, specifically comprises the following steps:
Step S801, Pico base station A obtain the synchronizing information (as the initial time of gps time and SFN etc.) of Macro base station B and Macro base station C by X2 interface, calculate the deviation of the SFN subframe that has obtained Pico base station A and Macro base station B and Macro base station C.
Step S802, Macro base station B utilize X2 message Load Information to send the Reconfigurations of ABS in t0.
The new ID of the ABS of Macro base station B is 10, and remaining ABS information also comprises and indicates respectively ABS subframe and 2 bitmap for measuring, the information that the port information of Macro community and ABS configuration are used.
The new ABS configuration that the Macro base station B that step S803, Pico base station A receive at time t1 sends, and calculate new up and descending resource distribution according to new ABS configuration.
Because the interference source of Pico base station A is except the B of Macro base station, also need to consider Macro base station C, so, Pico base station A arranges according to the different ABS of SFN deviation and Macro base station B and Macro base station C, and descending sub frame is divided into three set Normal subframe set (whole non-ABS subframes), the set of Complementary subframe and ABS subframe set (set of ABS subframe).The distribution schematic diagram of its subframe as shown in Figure 9.
Step S804, Pico base station A utilize X2 message Load Information to send HII, OI and RNTP information to Macro base station B and Macro base station C when time t2.
Wherein, the partial content that RNTP packets of information contains is as follows:
The ID of ABS: base station B is 10, base station C is 20.
Subframe set: one has three subframe set, length is all 40 bits, is that this subframe of expression of 1 belongs to this set in each set, is that this subframe of 0 expression does not belong to this set.Owing to there being the deviation of SFN between base station, the subframe numbers of base station A feedback has been converted into respectively the subframe numbering of base station B and base station C.
RNTP Per PRB: one has three groups, every group of length is all 50bit, respectively corresponding three subframe set.Wherein for Normal, gather: wherein 0 to 35 bit is 0, represent that front 35 PRB are with the power emission lower than thresholding, after 15 bits be 1, represent that 15 PRB need to launch with the power higher than thresholding below.
For Complementary set, 0-15 bit is 0, after 35 bits be 1.
For ABS set, 0-45 bit is 1, and all the other are 0.
RNTP Threshold: be respectively-3 ,-2 ,-10 for three subsets.
Step S805, Macro base station B and Macro base station C receive X2 message Load Information at t4 and t5 time point respectively.
Wherein, base station B finds that the ABS ID in RNTP is 10, and has currently used new ABS configuration, therefore, determines the scheduling resource of edge customer according to this ABS information.
Implement scene three:
In this enforcement scene, a Pico A community is positioned at the centre of a Macro base station B institute Serving cell, and its interference source only need to be considered this Macro base station B.
Liang Ge community all adopts GPS to carry out synchronously and is all tdd mode, therefore, there is no the difference of SFN.In addition, two all 10M networkings of base station, the sub-frame configuration of up-downgoing is configuration 1, therefore, the cycle of two base station ABS is 20ms.
As shown in figure 10, the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations proposing for the embodiment of the present invention in implementing scene three, specifically comprises the following steps:
Step S1001, Pico base station A send LoadInformation message by X2 message to Macro base station B, upgrade RNTP information.
Wherein, the ID of the ABS comprising in RNTP information is 9.
Step S1002, Macro base station B utilize X2 message Load Information to send the Reconfigurations of ABS in t1.
The new ID of the ABS of Macro base station B is 10, and remaining ABS information also comprises: indicate respectively ABS subframe and 2 bitmap for measuring, the information that the port information of Macro community and ABS configuration are used.
Step S1003, Pico base station A receive at time t2 the new ABS configuration that Macro base station B sends, and calculate new up and descending resource distribution according to new ABS configuration.
Because the interference source of Pico base station is mainly Macro base station B, so, Pico base station A calculates the descending resource of the user in non-ABS subframe and distributes.
Step S1004, Pico base station A utilize X2 message Load Information to send HII, OI and RNTP information when time t2.
Wherein, the partial content that RNTP packets of information contains is as follows:
The ID:10 of ABS.
Subframe set: length is 20bit, all non-ABS subframes are designated 1, ABS subframe and are designated 0.
RNTP Per PRB: length is 50bit, wherein 0 to 35 bit is 0, represents that front 35 PRB are with the power emission lower than thresholding, after 15 bits be 1, represent that 15 PRB need to launch with the power higher than thresholding below.
RNTP?Threshold：-2。
Step S1005, Macro base station A receive at t3 time point the X2 message Load Information that Pico base station A sends, and find that the ABS ID in RNTP is 10, upgrade still use before starting t4 once before dispatching method.
Step S1006, Macro base station B are used the RNTP information receiving recently after t4 point starts, and utilization information is wherein determined user's scheduling resource.
Implement scene four:
In this enforcement scene, a Pico A community is positioned at the centre of a Macro base station B institute Serving cell, and its interference source only need to be considered this Macro base station B.
Liang Ge community all adopts GPS to carry out synchronously and is all tdd mode, therefore there is no the difference of SFN.In addition two all 10M networkings of base station, for configuration 1, therefore the cycle of its ABS is 20ms to the sub-frame configuration of up-downgoing.
As shown in figure 11, the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations proposing for the embodiment of the present invention in implementing scene four, specifically comprises the following steps:
Step S1101, Macro base station B take to reduce power and launch in ABS subframe, therefore in time t0, utilize X2 message Load Information to send the information of the descending RNTP of oneself, in RNTP message, base station B is divided into two set Normal set and ABS set subframe.
Wherein, theing contents are as follows of the message of RNTP:
The ID:10 of ABS.
Subframe set: one has two subframe set, length is all 40 bits, is that this subframe of expression of 1 belongs to this set in each set, is that this subframe of 0 expression does not belong to this set.
RNTP Per PRB: one has two groups, every group of length is all 50bit, respectively corresponding three subframe set.Wherein for Normal, gather: wherein 0 to 35 bit is 0, represent that front 35 PRB are with the power emission lower than thresholding, after 15 bits be 1, represent that 15 PRB need to launch with the power higher than thresholding below.
For ABS set, 0-50 bit is 0.
RNTP Threshold: be respectively-2 ,-10.
Step S1102, Pico base station receive after this message, and the down transmitting power for Macro base station in different subframes is taked different resource occupation and scheduling strategy.
Implement scene five:
In this enforcement scene, a Pico A community is positioned at the centre of a Macro base station B institute Serving cell, and its interference source only need to be considered this Macro base station B.
Liang Ge community all adopts GPS to carry out synchronously and is all tdd mode, therefore, there is no the difference of SFN.In addition, two all 10M networkings of base station, for configuration 1, therefore the cycle of its ABS is 20ms to the sub-frame configuration of up-downgoing
As shown in figure 12, the schematic flow sheet of the coordination approach of a kind of downlink transmitting power between base stations proposing for the embodiment of the present invention in implementing scene five, specifically comprises the following steps:
Step S1201, Macro base station B utilize X2 message Load Information to send the Reconfigurations of ABS in t1.
The new ID of the ABS of Macro base station B is 10, and remaining ABS information also comprises: indicate respectively ABS subframe and 2 bitmap for measuring, the information that the port information of Macro community and ABS configuration are used.
Step S1202, Pico base station A utilize X2 message Load Information to send HII, OI and RNTP information when time t2.
Wherein, the partial content that RNTP packets of information contains is as follows:
The ID:9 of ABS.
Subframe set: length is 20bit, all non-ABS subframes are designated 1, ABS subframe and are designated 0.
RNTP Per PRB: length is 50bit, wherein 0 to 35 bit is 0, represents that front 35 PRB are with the power emission lower than thresholding, after 15 bits be 1, represent that 15 PRB need to launch with the power higher than thresholding below.
Step S1203, Pico base station A have received the ABS Reconfigurations of Macro base station B at time t3, due to the last RNTP transmitting time of distance and new ABS configuration Applicative time shorter, therefore Pico base station A need to recalculate the information of RNTP according to new ABS configuration, and it thes contents are as follows:
The ID:10 of ABS.
Subframe set: length is 20bit, all non-ABS subframes are designated 1, ABS subframe and are designated 0.
RNTP Per PRB: length is 50bit, wherein 0 to 30 bit is 0, represents that front 30 PRB are with the power emission lower than thresholding, after 20 bits be 1, represent that 20 PRB need to launch with the power higher than thresholding below.
Step S1204, Macro base station B have received RNTP information at time t5, and the ID that finds its ABS is 9, and have currently adopted new configuration 10, abandon this information.
Step S1205, Macro base station B receive another RNTP information at time t6, and the ID that finds its ABS is 10, and have currently used new ABS configuration, therefore, determine the scheduling resource of edge customer according to this ABS information.
Compared with prior art, the embodiment of the present invention has the following advantages:
The embodiment of the invention discloses a kind of coordination approach and equipment of downlink transmitting power between base stations, by the technical scheme of the application embodiment of the present invention, can be in the situation that take into full account the ABS configuration information of interference base station, carry out the negotiation of downlink transmitting power between base stations, thereby, the throughput that reduces the descending interference between base station and improve the down direction of system, avoid in the situation that introducing ABS, the wrong dispatching cell edge customer that continue to use the inter-cell interference cancellation technology in homogenous networks and cause and the generation of the situations such as interference that cause, thereby improve user's experience, the communication quality of safeguards system.
In order to realize the technical scheme of the embodiment of the present invention, the embodiment of the present invention also provides a kind of base station, and its structural representation as shown in figure 13, specifically comprises:
Sending module 133, for predicting the outcome according to processing module 132, the identification information of the ABS configuration adopting during by the down transmitting power distribution condition in each subframe set and prediction sends to interference base station, so that interference base station is determined the down transmitting power of each subframe set according to corresponding information.
In concrete application scenarios, acquisition module 131, specifically for receiving interference base station by the ABS configuration information of the Load Information message transmission of X2 interface.
Wherein, ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
In actual applications, processing module 132, specifically for:
According to the ABS configuration information of interference base station and each subframe, estimate the degree being interfered, corresponding all descending sub frames are divided into different subframe set;
According to traffic performance and user distribution situation, predict the power resource allocation situation on different descending sub frames
Further, processing module 132, also when receiving the message of the interference prediction information that comprises each subframe that interference base station sends when acquisition module 131, according to the corresponding ABS identification information of message and corresponding ABS configuration information, different subframes is adopted to different resource allocation policies.
On the other hand, the embodiment of the present invention also provides a kind of base station, and its structural representation as shown in figure 14, comprising:
Sending module 142, for sending to interfered base station by the ABS configuration information of base station self;
Wherein, sending module 142 is specifically for by the ABS configuration information of self, the Load Information message by X2 interface sends to interfered base station;
Wherein, ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
Further, this base station also comprises:
Receiver module 144, for after sending module 142 sends to interfered base station by the ABS configuration information of base station self, receive that interfered base station sends according to ABS configuration information, predict down transmitting power distribution condition in each the subframe set obtaining and prediction time the ABS that the adopts identification information that configures;
Wherein, the down transmitting power distribution condition in each subframe set, specifically comprises:
Subframe in each subframe set is the positional information in the cycle at an ABS;
Power situation in each subframe set on each resource location of each subframe;
The threshold information of down transmitting power in each subframe in each subframe set;
The shared OFDM symbolic number of Physical Downlink Control Channel in each subframe in each subframe set.
It is to be noted; the role difference of serving as in the technical scheme that two kinds of above-mentioned base stations just propose in the embodiment of the present invention according to it and the division carried out; in actual applications; two kinds of base stations can coexist in same physical base station, and such variation does not affect protection scope of the present invention.
Compared with prior art, the embodiment of the present invention has the following advantages:
The embodiment of the invention discloses a kind of coordination approach and equipment of downlink transmitting power between base stations, by the technical scheme of the application embodiment of the present invention, can be in the situation that take into full account the ABS configuration information of interference base station, carry out the negotiation of downlink transmitting power between base stations, thereby, the throughput that reduces the descending interference between base station and improve the down direction of system, avoid in the situation that introducing ABS, the wrong dispatching cell edge customer that continue to use the inter-cell interference cancellation technology in homogenous networks and cause and the generation of the situations such as interference that cause, thereby improve user's experience, the communication quality of safeguards system.
Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the present invention and can realize by hardware, and the mode that also can add necessary general hardware platform by software realizes.Understanding based on such, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) carry out the embodiment of the present invention each implement the method described in scene.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram of preferably implementing scene, the module in accompanying drawing or flow process might not be that the enforcement embodiment of the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of implementing scene.
Disclosed is above only the several concrete enforcement scene of the embodiment of the present invention, and still, the embodiment of the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into the traffic limits scope of the embodiment of the present invention.
Claims (18)
1. a coordination approach for downlink transmitting power between base stations, is characterized in that, comprising:
Interfered base station obtains the ABS configuration information of interference base station;
When described interfered base station sends RNTP message to described interference base station, described interfered base station, according to the ABS configuration information of described interference base station, is divided into different subframe set by corresponding all descending sub frames;
Described interfered base station is predicted the power resource allocation situation on different descending sub frames;
Described interfered base station is according to the result of described prediction, the identification information of the ABS configuration adopting during by the down transmitting power distribution condition in each subframe set and prediction sends to described interference base station, so that described interference base station is determined the down transmitting power of each subframe set according to corresponding information.
2. the method for claim 1, is characterized in that, described interfered base station obtains the ABS configuration information of interference base station, specifically comprises:
Described interfered base station receives described interference base station by the ABS configuration information of the Load Information message transmission of X2 interface.
3. method as claimed in claim 2, is characterized in that, described ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
4. the method for claim 1, is characterized in that, described interfered base station, according to the ABS configuration information of described interference base station, is divided into different subframe set by corresponding all descending sub frames, specifically comprises:
Described interfered base station estimates according to the ABS configuration information of described interference base station and each subframe the degree being interfered, and corresponding all descending sub frames are divided into different subframe set.
5. the method for claim 1, is characterized in that, described interfered base station is predicted the power resource allocation situation on different descending sub frames, is specially:
Described interfered base station is predicted the power resource allocation situation on different descending sub frames according to traffic performance and user distribution situation.
6. the method for claim 1, is characterized in that, the down transmitting power distribution condition in described each subframe set, specifically comprises:
Subframe in each subframe set is the positional information in the cycle at an ABS;
Power situation in each subframe set on each resource location of each subframe;
The threshold information of down transmitting power in each subframe in each subframe set;
The shared OFDM symbolic number of Physical Downlink Control Channel in each subframe in each subframe set.
7. the method for claim 1, is characterized in that, also comprises:
When described interfered base station receives the message of the interference prediction information that comprises each subframe that described interference base station sends, described interfered base station, according to the corresponding ABS identification information of described message and corresponding ABS configuration information, adopts different resource allocation policies to different subframes.
8. a base station, is characterized in that, comprising:
Acquisition module, for obtaining the ABS configuration information of interference base station;
Processing module, for when described base station need to send RNTP message to described interference base station, the ABS configuration information of the interference base station obtaining according to described acquisition module, corresponding all descending sub frames are divided into different subframe set, and predict the power resource allocation situation on different descending sub frames;
Sending module, for predicting the outcome according to described processing module, the identification information of the ABS configuration adopting during by the down transmitting power distribution condition in each subframe set and prediction sends to described interference base station, so that described interference base station is determined the down transmitting power of each subframe set according to corresponding information.
9. base station as claimed in claim 8, is characterized in that, described acquisition module, specifically for receiving described interference base station by the ABS configuration information of the Load Information message transmission of X2 interface;
Wherein, described ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
10. base station as claimed in claim 8, is characterized in that, described processing module, specifically for:
According to the ABS configuration information of described interference base station and each subframe, estimate the degree being interfered, corresponding all descending sub frames are divided into different subframe set;
According to traffic performance and user distribution situation, predict the power resource allocation situation on different descending sub frames.
11. base stations as claimed in claim 8, is characterized in that,
Described processing module, also when receiving the message of the interference prediction information that comprises each subframe that described interference base station sends when described acquisition module, according to the corresponding ABS identification information of described message and corresponding ABS configuration information, different subframes is adopted to different resource allocation policies.
The coordination approach of 12. 1 kinds of downlink transmitting power between base stations, is characterized in that, comprising:
Interference base station is determined the ABS configuration information of self;
Described interference base station sends to interfered base station by the ABS configuration information of self;
Described interference base station is determined the down transmitting power of each subframe set according to described ABS configuration information;
Wherein, described interference base station also comprises after the ABS configuration information of self is sent to interfered base station:
The identification information of the ABS configuration that described interference base station adopts while receiving predicting the down transmitting power distribution condition in each the subframe set obtaining and predicting according to described ABS configuration information of described interfered base station transmission.
13. methods as claimed in claim 12, is characterized in that, described interference base station sends to interfered base station by the ABS configuration information of self, specifically comprises:
By the ABS configuration information of self, the Load Information message by X2 interface sends to interfered base station to described interference base station.
14. methods as claimed in claim 13, is characterized in that, described ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
15. methods as claimed in claim 12, is characterized in that, the down transmitting power distribution condition in described each subframe set, specifically comprises:
Subframe in each subframe set is the positional information in the cycle at an ABS;
Power situation in each subframe set on each resource location of each subframe;
The threshold information of down transmitting power in each subframe in each subframe set;
The shared OFDM symbolic number of Physical Downlink Control Channel in each subframe in each subframe set.
16. 1 kinds of base stations, is characterized in that, comprising:
Determination module, for determining the ABS configuration information of described base station self;
Sending module, for sending to interfered base station by the ABS configuration information of described base station self;
Processing module, for determining the down transmitting power of each subframe set according to the determined ABS configuration information of described determination module;
Wherein, also comprise:
Receiver module, for after described sending module sends to interfered base station by the ABS configuration information of described base station self, receive that described interfered base station sends according to described ABS configuration information, predict down transmitting power distribution condition in each the subframe set obtaining and prediction time the ABS that the adopts identification information that configures.
17. base stations as claimed in claim 16, is characterized in that, described sending module, specifically for:
Load Information message by the ABS configuration information of self by X2 interface sends to interfered base station;
Wherein, described ABS configuration information, specifically comprises:
Be used to indicate the bitmap information of ABS sub-frame configuration;
Be used to indicate the bitmap information of measurement;
Antenna port information;
Whether apply the indication information of ABS;
The identification information of ABS.
18. base stations as claimed in claim 16, is characterized in that, the down transmitting power distribution condition in described each subframe set, specifically comprises:
Subframe in each subframe set is the positional information in the cycle at an ABS;
Power situation in each subframe set on each resource location of each subframe;
The threshold information of down transmitting power in each subframe in each subframe set;
The shared OFDM symbolic number of Physical Downlink Control Channel in each subframe in each subframe set.
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