CN105208659B

CN105208659B - A kind of configuration method and macro station, micro- station of almost blank subframe

Info

Publication number: CN105208659B
Application number: CN201510542775.6A
Authority: CN
Inventors: 林敏�
Original assignee: Comba Telecom Technology Guangzhou Ltd; Comba Telecom Systems China Ltd; Comba Telecom Systems Guangzhou Co Ltd; Tianjin Comba Telecom Systems Co Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2015-08-27
Filing date: 2015-08-27
Publication date: 2019-04-16
Anticipated expiration: 2035-08-27
Also published as: CN105208659A

Abstract

The invention discloses the configuration methods and macro station of a kind of almost blank subframe, micro- station, this method includes that macro station is interfered to receive the almost blank subframe ABS acquisition request that micro- station is sent, interfere macro station according to the sum for meeting the number of sub-frames for interfering the user demand under macro station and interference macro station downlink subframe within the ABS sub-frame configuration period, determine the number of the idle subframe of interference macro station, interference macro station compares the number of the idle subframe of interference macro station and the ABS number of sub-frames of micro- station demand, determine the number of the ABS subframe of ABS subframe pattern to be generated, interfere macro station according to the number of the load of downlink subframe in the ABS sub-frame configuration period and the ABS subframe of ABS subframe pattern to be generated, determine the subframe position of each ABS subframe in ABS subframe pattern to be generated, generate ABS subframe pattern.The present invention realizes system resource and maximally utilizes, and achievees the purpose that improve the availability of frequency spectrum and system entire throughput.

Description

A kind of configuration method and macro station, micro- station of almost blank subframe

Technical field

The present invention relates to fields of communication technology, more particularly to a kind of almost configuration method of blank subframe and macro station, micro- station.

Background technique

Effectively to solve the problems such as macro station increases and shunts with covering under hot spot scene indoors, in macro station coverage area It introduces LPN (Low PowerNode, low power nodes), so that the multitiered network of the same covering of different type node composition is formed, Such network is known as HetNet (Heterogeneous network, heterogeneous network) by industry.LPN includes Pico cell (Picocell), Home eNodeB (Femtocell) and possess the relay node (Relay Node) of signal relay transmission, for Here LPN also may be collectively referred to as micro- station；Compared with traditional macro station, micro- station has low in energy consumption, small in size, light and flexible, just In covering the advantages that mending the flexible deployments such as blind and hot spot shunting, operator can satisfy in order to which the different scenes that network is disposed need It asks, industry generally believes that HetNet scheme will solve LTE (Long Term Evolution, long term evolution) network from now on to cover The only way of lid and network capacity.

Macro station and micro- station are very flexible on networking mode in HetNet at present, both can be with identical networking, can also be with alien frequencies Networking, in the light of actual conditions flexible Application, builds heterogeneous network jointly, it is contemplated that in the case where frequency spectrum resource more anxiety, industry Boundary frequently with identical networking scheme, but compared with traditional homogeneous network, heterogeneous network identical networking, so that micro- station edge is used Family receives more serious co-channel interference, causes the indexs such as its mobility, access performance to deteriorate, therefore in isomery common-frequency network In, it is also necessary to macro micro- interference coordination is realized, to reduce influence of the co-channel interference to micro- station system performance.It is existing more mature Be applied to macro micro- heterogeneous network in inter-cell interference coordination method be eICIC (Enhanced Inter Cell Interference Coordination, enhancement type district interference coordination), this method one of them key technology is exactly ABS (Almost Blank Subframe, almost blank subframe) technology, the technology in such a way that macro station configures ABS illustration sample, So that macro station reduces power emission on certain physical channels of these ABS subframes or does not emit, so as to avoid to micro- It stands PDCCH (Physical Downlink Control Channel, the object of edge UE (User Equipment, user equipment) Manage down control channel) and PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) Interference.In the prior art, macro station only considers that the ABS number of sub-frames of micro- station demand or the interference of micro- station are used when configuring ABS illustration sample The channel quality or disturbance level at family do not consider user demand and the system loading of macro station itself, lead to not meet Macro station system minimum resources demand, while in the case where not considering system loading, it is easy to appear the higher subframe of load and is matched It is set to ABS subframe, causes macro station resources loss is excessive to cause throughput degradation obvious, the above-mentioned prior art is based on, can not lead to The use for crossing ABS achievees the purpose that maximally utilize system resource and improves throughput of system.

Summary of the invention

The embodiment of the present invention provides a kind of almost configuration method of blank subframe and macro station, micro- station, to realize that system provides Source maximally utilizes, and achievees the purpose that improve the availability of frequency spectrum and system entire throughput.

A kind of configuration method of almost blank subframe provided in an embodiment of the present invention, comprising:

Interference macro station receives the almost blank subframe ABS acquisition request that micro- station is sent, and carries in the ABS acquisition request micro- The ABS number of sub-frames for demand of standing；

The interference macro station is according to the number of sub-frames and the interference macro station for meeting the user demand under the interference macro station The sum of downlink subframe within the ABS sub-frame configuration period determines the number of the idle subframe of the interference macro station；

The number of the idle subframe of the interference macro station interference macro station and the ABS subframe of micro- station demand Number, determines the number of the ABS subframe of ABS subframe pattern to be generated；

The load and the ABS to be generated that macro station is interfered according to downlink subframe in the ABS sub-frame configuration period The number of the ABS subframe of subframe pattern determines the subframe position of each ABS subframe in the ABS subframe pattern to be generated, generates ABS subframe pattern.

Preferably, determining the number of sub-frames for meeting the user demand under the interference macro station according to formula (1):

Wherein, N_{sf_UE}Indicate the number of sub-frames for meeting the user demand under interference macro station, N_{sf_ABS}Indicate ABS sub-frame configuration The sum of downlink subframe in period, N '_{RB_UE}Indicate the resources requirement for meeting user's minimum resources demand under interference macro station, N_RBIndicate the total resources of system bandwidth.

Preferably, determining the number of the idle subframe of the interference macro station according to formula (2):

N_{M_ABS}=N_{sf_ABS}-N_{sf_UE}…………………………………………(2)

Wherein, N_{M_ABS}Indicate the number of the idle subframe of interference macro station, N_{sf_UE}It indicates to meet user's need under interference macro station The number of sub-frames asked, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

Preferably, determining the number of the ABS subframe of the ABS subframe pattern to be generated according to formula (3):

Wherein, N_ABSIndicate the number of the ABS subframe of ABS subframe pattern to be generated, N_{M_ABS}Indicate the free time of interference macro station The number of subframe, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, α indicates the loss scale factor of interference macro station, value range For (0,1).

Preferably, according to the load of downlink subframe in the ABS sub-frame configuration period and the ABS subframe pattern to be generated The number of the ABS subframe of sample determines the subframe position of each ABS subframe in the ABS subframe pattern to be generated, generates ABS Frame pattern, comprising:

The load of downlink subframe in the ABS sub-frame configuration period is ranked up from low to high；

According to the number of the ABS subframe of the ABS subframe pattern to be generated, out of described the ABS sub-frame configuration period under The minimum subframe of the load of row subframe starts to choose, and obtains the subframe position of each ABS subframe in the ABS subframe pattern to be generated It sets, generates ABS subframe pattern.

Preferably, the ABS number of sub-frames of micro- station demand is stood according to needed for the first user interfered by macro station as micro- Resources requirement, system bandwidth total resources and in the ABS sub-frame configuration period downlink subframe sum determine, described first User refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding.

Correspondingly, the embodiment of the invention also provides a kind of configuration methods of almost blank subframe, comprising:

Micro- station determines the edge customer interfered by macro station；The first use is determined from the edge customer interfered by macro station Family, first user refer to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

Micro- station is according to the edge customer interfered by macro station and first user, it is determined whether meets and obtains The condition of ABS subframe pattern；

If so, micro- station according to it is micro- pack foot first user needed for resources requirement, system bandwidth it is total The resource and sum of downlink subframe determines the ABS number of sub-frames of micro- station demand in the ABS sub-frame configuration period；

Micro- stand sends ABS acquisition request to interference macro station, carries the described of the determination in the ABS acquisition request The ABS number of sub-frames of micro- station demand.

Preferably, determining the ABS number of sub-frames of micro- station demand according to formula (4)；

The formula (4) are as follows:

Wherein, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, N_RB' indicate minimum resources needed for meeting the first user Demand, N_RBIndicate the total resources of system bandwidth, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

Preferably, micro- station is according to the edge customer interfered by macro station and first user, it is determined whether full Foot obtains the condition of ABS subframe pattern, comprising:

Determine whether the accounting of first user is greater than interference threshold, the accounting of first user is first use The ratio of the quantity at family and the quantity of the edge customer interfered by macro station；

If more than the interference threshold, then meet the condition for obtaining ABS subframe pattern.

Correspondingly, the embodiment of the invention provides a kind of macro stations, comprising:

Receiving unit, the almost blank subframe ABS acquisition request sent for receiving micro- station, in the ABS acquisition request Carry the ABS number of sub-frames of micro- station demand；

Determination unit, for according to the number of sub-frames and the interference macro station for meeting the user demand under the interference macro station The sum of downlink subframe within the ABS sub-frame configuration period determines the number of the idle subframe of the interference macro station；

Comparing unit, the number of the idle subframe for the interference macro station and the ABS subframe of micro- station demand Number determines the number of the ABS subframe of ABS subframe pattern to be generated；

Generation unit, for the load and the ABS to be generated according to downlink subframe in the ABS sub-frame configuration period The number of the ABS subframe of subframe pattern determines the subframe position of each ABS subframe in the ABS subframe pattern to be generated, generates ABS subframe pattern.

Preferably, the determination unit is specifically used for:

The number of sub-frames for meeting the user demand under the interference macro station is determined according to formula (1):

Preferably, the determination unit is specifically used for:

The number of the idle subframe of the interference macro station is determined according to formula (2):

Preferably, the comparing unit is specifically used for:

The number of the ABS subframe of the ABS subframe pattern to be generated is determined according to formula (3):

Wherein, N_ABSIndicate the number of the ABS subframe of ABS subframe pattern to be generated, N_{M_ABS}Indicate the free time of interference macro station The number of subframe, N_{P_ABS}Indicate the number of the ABS subframe of micro- station demand, α indicates the loss scale factor of interference macro station, value model It encloses for (0,1).

Preferably, the generation unit is specifically used for:

Correspondingly, the embodiment of the invention provides a kind of micro- stations, comprising:

Determination unit, for determining the edge customer interfered by macro station；From the edge customer interfered by macro station really The first user is made, first user refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

Processing unit, for according to the edge customer interfered by macro station and first user, it is determined whether meet Obtain the condition of ABS subframe pattern；If so, according to it is described it is micro- pack foot first user needed for minimum resources, system Total resources of the bandwidth and sum of downlink subframe determines the number of micro- station demand ABS subframe in the ABS sub-frame configuration period

Transmission unit carries the determination in the ABS acquisition request for sending ABS acquisition request to interference macro station Micro- station demand ABS number of sub-frames.

Preferably, the processing unit is specifically used for:

The number of demand ABS subframe is determined according to formula (4)；

The formula (4) are as follows:

Wherein, N_{P_ABS}Indicate the number of the ABS subframe of micro- station demand, N_RB' indicate minimum money needed for meeting the first user Source demand, N_RBIndicate the total resources of system bandwidth, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

Preferably, the processing unit is specifically used for:

The embodiment of the present invention shows the almost blank subframe ABS acquisition request for interfering macro station to send by receiving micro- station, institute State the ABS number of sub-frames that micro- station demand is carried in ABS acquisition request, the interference macro station is according to meeting under the interference macro station The sum of the number of sub-frames of user demand and interference macro station downlink subframe within the ABS sub-frame configuration period determines described dry Disturb the number of the idle subframe of macro station, the number of the idle subframe of the interference macro station interference macro station and micro- station The ABS number of sub-frames of demand determines the number of the ABS subframe of ABS subframe pattern to be generated, and the interference macro station is according to The number of the ABS subframe of the load of downlink subframe and the ABS subframe pattern to be generated in the ABS sub-frame configuration period determines The subframe position of each ABS subframe in the ABS subframe pattern to be generated generates ABS subframe pattern.According to system loading, use Family resource requirement number of sub-frames and the almost blank subframe Number synthesis of micro- station request determine ABS illustration sample, dry ensure that User's primary demand of macro station is disturbed, while effectively interfering the area interference between macro station and micro- station in control heterogeneous network, is rationally matched ABS illustration sample is set, system resource is realized and maximally utilizes, reaches the mesh for improving the availability of frequency spectrum and system entire throughput 's.

Detailed description of the invention

Fig. 1 is the schematic diagram of a scenario that macro base station and femto base station are disposed jointly in the prior art；

Fig. 2 is a kind of flow diagram of the almost configuration method of blank subframe in the embodiment of the present invention；

Fig. 3 is a kind of flow diagram of the almost configuration method of blank subframe in the embodiment of the present invention；

Fig. 4 is the flow diagram of another almost configuration method of blank subframe in the embodiment of the present invention；

Fig. 5 is a kind of ABS subframe pattern schematic diagram in the embodiment of the present invention；

Fig. 6 is another kind ABS subframe pattern schematic diagram in the embodiment of the present invention；

Fig. 7 is a kind of structural schematic diagram of macro station in the embodiment of the present invention；

Fig. 8 is a kind of structural schematic diagram at micro- station in the embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, technical solution in the embodiment of the present invention carry out it is clear, it is complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Micro- station in the embodiment of the present invention can be femto base station in macro base station coverage area, micro-base station, Home eNodeB, Relay node etc. has light and flexible low in energy consumption, small in size, and the low power nodes for the features such as blind and hot spot shunts are mended convenient for covering, Also it may be collectively referred to as micro- station.Interference macro station interferes micro- station and belongs to micro- adjacent macro station of standing.

Fig. 1 shows the scene that a kind of macro base station and femto base station are disposed jointly, as shown in Figure 1, femto base station is deployed in When in macro base station, it is disturbed more serious user C and user D and is distributed in the region cell extension (CRE), i.e. shadow region in figure Domain will receive the severe jamming of macro base station in the zone user.User is judging access base station or micro- after entering expansion area When micro-base station, in the signal RSRP from femto base station_pico(Reference Signal Received Power, reference signal Receive power) on increase an offset (bias), bias is positive number, and is configured by upper layer device under normal conditions. RSRP_picoAfter upper increase bias again with the signal strength RSRP from macro base station_macroCompare, if RSRP_pico+bias≥ RSRP_macro, then user selects access femto base station；Otherwise, user selects access macro base station.

It can be seen that the user in extended area from above-mentioned user mode access, the signal of the macro base station received is strong Degree is greater than the signal strength of the femto base station received, and therefore, the interference that this certain customers is subject to is than more serious, thus its performance With regard to poor, the handling capacity of system is further affected.

Based on foregoing description, Fig. 2 shows a kind of processes of almost configuration method of blank subframe, which can be by macro It stands execution.

As shown in Fig. 2, the specific steps of the process include:

Step 201, interference macro station receives the almost blank subframe ABS acquisition request that micro- station is sent.

Step 202, the interference macro station is according to the number of sub-frames of user demand that meets under the interference macro station and described The sum for interfering macro station downlink subframe within the ABS sub-frame configuration period determines the number of the idle subframe of the interference macro station.

Step 203, the number and micro- station demand of the idle subframe of the interference macro station interference macro station ABS number of sub-frames determines the number of the ABS subframe of ABS subframe pattern to be generated.

Step 204, the interference macro station is according to the load of downlink subframe in the ABS sub-frame configuration period and described to be generated At ABS subframe pattern ABS subframe number, determine the subframe position of each ABS subframe in the ABS subframe pattern to be generated It sets, generates ABS subframe pattern.

In step 201, the ABS number of sub-frames of micro- station demand is carried in the ABS acquisition request that micro- station is sent, which needs The number for the ABS subframe asked is as micro- station resources requirement, system bandwidth according to needed for the first user interfered by macro station Total resources and the sum determination of downlink subframe in the ABS sub-frame configuration period, which refers to that channel quality is more than or equal to The edge customer of channel quality deterioration thresholding.

The edge customer of poor quality interfered by macro station indicates the edge customer for meeting channel quality impaired condition by micro- The interference for the macro station in neighboring community of standing, can be greater than by the RSRP of first stop in the neighboring community Wei Zhan that edge customer reports etc. Interference of the edge customer by adjacent macro station is adjudicated in presetting by macro station interference threshold.

Indicated that channel quality is more than or equal to preset channel deterioration by the accounting of the edge customer of poor quality of macro station interference The ratio of number of users and the edge customer sum of thresholding；Wherein, the channel quality of user can be the BLER (Block of user Error Ratio, Block Error Rate) or RSRP or SINR (Signal to Interference plus Noise Ratio, letter Number with infection plus noise ratio)；Preset channel deterioration thresholding is the thresholding that an assessment channel quality of setting deteriorates, if with Family channel quality is more than or equal to the thresholding, then shows that the channel quality of the user deteriorates.

In step 202, the number of sub-frames for meeting the user demand under the interference macro station is interference macro station according to formula (1) it determines, the formula (1) are as follows:

Further, above-mentioned formula (1) can be obtained by following formula (5) and formula (6).

Formula (5) are as follows:

Wherein, N_{sf_ABS}Indicate the sum of interference macro station downlink subframe within the ABS sub-frame configuration period, N_{sf_UE}It indicates to meet The number of sub-frames of the user demand under macro station is interfered, q indicates the accounting for meeting user's minimum resources demand under interference macro station.

In order to which (Hybrid Automatic Report Request is mixed with ascending HARQ in the ABS sub-frame configuration period Automatic repeat request) turnaround time is aligned and a cycle of setting, and it is related with system subframe configuration, such as TDD system Formula, when subframe is configured to 1~5, the ABS sub-frame configuration period is 20 subframes, i.e. 2 radio frames, wherein in this 20 subframes Downlink subframe sum be 12；For FDD standard, the unified ABS sub-frame configuration period is 40ms, i.e. 4 radio frames, wherein this 40 Downlink subframe sum in a subframe is 40.

For example, the system bandwidth for interfering macro station is 20M, in the case that sub-frame configuration is 1, corresponding ABS subframe week Phase is 20ms, and downlink subframe sum is 12 in the ABS sub-frame configuration period, if meeting user's minimum resources need under interference macro station The accounting asked is 30%, then interferes the sum of macro station downlink subframe within the ABS sub-frame configuration period

The accounting of user's minimum resources demand under satisfaction interference macro station is that interference macro station is determined according to formula (6), The formula (6) are as follows:

Wherein, q indicates the accounting for meeting user's minimum resources demand under interference macro station, N '_{RB_UE}Indicate that satisfaction interference is macro Minimum resources needed for user under standing, N_RBIndicate the total resources of system bandwidth, i.e., total downlink resource, such as 20MHz system band Corresponding available RB (Resource Block, the resource block) number of width is 100.

For example, the system bandwidth for interfering macro station is 20M.Minimum resources number needed for known users is N '_{RB_UE}=30, The corresponding total available RB number of system bandwidth is 100, then user's minimum resources demand accounting

According to the above-mentioned number of sub-frames for meeting the user demand under the interference macro station and downlink in the ABS sub-frame configuration period The sum of subframe, interference macro station can determine the number of the idle subframe of the interference macro station according to formula (2).

The formula (2) are as follows:

Wherein, N_{M_ABS}Indicate the number of interference macro station free time subframe, N_{sf_UE}It indicates to meet the user under the interference macro station The number of sub-frames of demand, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

In step 203, the ABS number of sub-frames and step of the micro- station demand sent according to the micro- station obtained in step 201 The number of the interference macro station free time subframe determined in 202, interference macro station determine ABS subframe pattern to be generated according to formula (3) In each ABS subframe number.

The formula (3) are as follows:

Wherein, N_ABSIndicate the number of the ABS subframe of ABS subframe pattern to be generated, N_{M_ABS}Indicate the idle son of interference macro station The number of frame, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, α indicates the loss scale factor of interference macro station, the interference macro station Loss scale factor be used for reflect interfere macro station coverage area in user performance damaed cordition.The loss ratio of the interference macro station The value range of the example factor is (0,1), which, which is related in interference macro station coverage area, has minimum guaranteed rate requirement to business And having the damaed cordition of the user performance of high standard to indexs such as time delay, rate, Block Error Rates, value configuration is excessive, causes to do It disturbs macro station and sacrifices high quality user performance excessively to exchange the high quality user performance at micro- station for；Conversely, the ABS of interference macro station configuration Subframe is very few to be led to not meet micro- station high quality user performance demand, such as the value can be configured to 0.5.

In step 204, interference macro station is ranked up the load of downlink subframe in the ABS sub-frame configuration period from low to high. Interfere the load of macro station downlink subframe within the ABS sub-frame configuration period by interference macro station according in user channel quality detection cycle Assembly average acquisition inside is carried out to the load of the subframe of identical downlink subframe number in the ABS sub-frame configuration period respectively.This is negative Lotus may include one of number of users, the satisfaction of high quality user, user resources utilization rate or any combination.

Interfere macro station according to the number of the ABS subframe of ABS subframe pattern to be generated, out of ABS the sub-frame configuration period under The minimum subframe of the load of row subframe starts to choose, and obtains the subframe position of each ABS subframe in ABS subframe pattern to be generated, Generate ABS subframe pattern.

Above-described embodiment shows the almost blank subframe ABS acquisition request for interfering macro station to send by receiving micro- station, interference Macro station is according to number of sub-frames and interference macro station downlink within the ABS sub-frame configuration period for meeting the user demand under interference macro station The sum of frame, determine interference macro station idle subframe number, interference macro station compare interference macro station idle subframe number with The ABS number of sub-frames of micro- station demand determines the number of the ABS subframe of ABS subframe pattern to be generated, interferes macro station according to The number of the ABS subframe of the load of downlink subframe and ABS subframe pattern to be generated, determines to be generated in the ABS sub-frame configuration period At ABS subframe pattern in each ABS subframe subframe position, generate ABS subframe pattern.Macro station is according to system loading, Yong Huzi Source demand number of sub-frames and the almost blank subframe Number synthesis of micro- station request determine ABS illustration sample, ensure that macro station User's primary demand, while the area interference effectively in control heterogeneous network between macro station and micro- station, reasonable disposition ABS illustration sample are real System resource is showed to maximally utilize, has achieved the purpose that improve the availability of frequency spectrum and system entire throughput.

Fig. 3 shows a kind of process of almost configuration method of blank subframe, which can be executed by micro- station.

As shown in figure 3, the specific steps of the process comprises:

Step 301, micro- station determines the edge customer interfered by macro station, from the edge customer interfered by macro station Determine the first user.

Step 302, micro- station is according to the edge customer interfered by macro station and first user, it is determined whether full Foot obtains the condition of ABS subframe pattern, if so, step 303 is transferred to, if it is not, being then transferred to step 301.

Step 303, micro- station according to it is described it is micro- pack foot first user needed for resources requirement, system bandwidth Total resources and in the ABS sub-frame configuration period downlink subframe sum determine demand ABS subframe number.

Step 304, micro- stand sends ABS acquisition request to interference macro station.

In step 301, micro- to stand before not obtaining ABS subframe pattern, what micro- station can be reported by user's measurement RSRP makes decisions with the RSRP difference of adjacent base station, and in neighboring community macro station RSRP be more than or equal to it is preset by When macro station interference threshold, it is believed that interference of the edge customer by adjacent macro station, therefore be referred to as the edge interfered by macro station and use Family.Such as it presets and is set as -100dBm by macro station interference threshold.

The first user is determined from the above-mentioned edge customer interfered by macro station, i.e., the edge of poor quality interfered by macro station is used Family, by macro station interference and channel quality is more than or equal to the edge customer of preset channel deterioration thresholding.Wherein, the channel of user Quality can be the BLER or RSRP or SINR of user；Preset channel deterioration thresholding is an assessment channel matter of setting The thresholding deteriorated is measured, if edge customer channel quality is more than or equal to the thresholding, shows that the channel quality of the edge customer deteriorates, Such as when channel quality uses BLER, preset channel deterioration thresholding can be set to 10%.

In step 302, determine the first user quantity and by macro station interfere edge customer quantity ratio it is whether big In interference threshold.It can be and determine whether the accounting of the edge customer of poor quality interfered by macro station is greater than interference threshold.

Interference threshold indicates that the edge customer of poor quality interfered by macro station accounts for the maximum ratio of total edge user, which obtains Excessive, will lead to can not really be improved by the quality for the edge customer that macro station is interfered in the short time；The value obtains too small, meeting Cause micro- station when estimating ABS subframe there are relatively large deviation, can not really reflect the user resources demand interfered by macro station, such as dry It disturbs thresholding and is set as 60%.

In step 303, judge in step 302 after meeting the condition for obtaining ABS subframe pattern, it can be according to micro- station Minimum resources needed for meeting the first user, the total resources of system bandwidth and in the ABS sub-frame configuration period downlink subframe sum Determine the ABS number of sub-frames of micro- station demand.

Micro- station calculates the ABS number of sub-frames of micro- station demand according to formula (4):

Wherein, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, N_RB' indicate minimum money needed for meeting the first user Source, N_RBIndicate the total resources of system bandwidth, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

Further, above-mentioned formula (4) can be obtained by formula (7) and formula (8).

Formula (7) are as follows:

Wherein, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, p indicates the edge customer of poor quality interfered by macro station Accounting, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

The accounting of the edge customer of poor quality interfered by macro station in above-mentioned formula can be determined according to formula (8).

The formula (8) are as follows:

Wherein, p indicates the accounting of the edge customer of poor quality interfered by macro station, N_RB' indicate needed for meeting the first user Minimum resources demand, N_RBIndicate the total resources of system bandwidth.

Minimum resources demand, which refers in the edge customer of poor quality by macro interference, has minimum guaranteed rate requirement to business And there is the minimum value of resource needed for the user of high standard to indexs such as time delay, rate, Block Error Rates；Such as the N- in LTE system GBR (Non-Guaranteed Bit Rate, non-guaranteed bit rate) user, there is minimum guaranteed rate requirement, GBR (Guaranteed Bit Rate guarantees bit rate) user has high standard to indexs such as time delay, rate, Block Error Rates.

In step 304, micro- stand interferes macro station to send ABS acquisition request to it, carries in the ABS acquisition request above-mentioned The ABS number of sub-frames of the micro- station demand determined in step 303.The ABS number of sub-frames of micro- station demand is for interfering macro station root ABS subframe pattern is generated according to the number of the idle subframe of the ABS number of sub-frames of micro- station demand, system loading and interference macro station.

In order to preferably explain the embodiment of the present invention, will be provided below below in conjunction with specifically scene is practiced Carry out under concrete application scene the configuration process of almost blank subframe.

In the present embodiment, Fig. 4 shows a kind of configuration flow of almost blank subframe, and specific steps include:

Step 401, before not obtaining ABS illustration sample, judgement is by the accounting for the edge customer of poor quality that macro station is interfered at micro- station It is no to then follow the steps 402 if being more than more than interference threshold；

Micro- station can be sentenced by RSRP that user's measurement reports or with the RSRP difference of adjacent base station in step 401 Certainly, when and macro station RSRP is more than or equal to presetting by macro station interference threshold in neighboring community, it is believed that the edge customer is by phase The interference of adjacent macro station, therefore it is referred to as the edge customer interfered by macro station.Such as it is default be set as by macro station interference threshold- 100dBm；

The accounting of the edge customer of poor quality interfered in step 401 by macro station indicates that channel quality is more than or equal to preset channel The ratio of number of users and the edge customer sum of deterioration thresholding；Wherein, the channel quality of user can be the BLER of user Or RSRP or SINR；Preset channel deterioration thresholding is the thresholding that an assessment channel quality of setting deteriorates, if user Channel quality is more than or equal to the thresholding, then shows that the channel quality of the user deteriorates, such as when channel quality uses BLER, in advance If channel quality, which deteriorates thresholding, can be set to 10%.

Interference threshold indicates that the edge customer of poor quality interfered by macro station accounts for the high specific of total edge user in step 401 Example, value acquirement is excessive, and will lead to can not really be improved by the quality for the edge customer that macro station is interfered in the short time；The value Obtain it is too small, will lead to when ABS subframe is estimated at micro- station can not really reflect there are relatively large deviation by macro station interfere user resources Demand, such as default interference threshold are set as 60%.

For example, in micro- station coverage area, the measurement BLER=15% of edge customer UE1 receives macro station 1 and macro station 2 RSPR signal be respectively -98dBm and -115dBm, the RSPR signal of macro station 1, which meets, is greater than default interference threshold -100dBm, because This UE1 is interfered by macro station 1, the measurement BLER=12% of edge customer UE2, receives the RSPR signal difference of macro station 1 and macro station 2 For -120dBm and -100dBm, the RSPR signal of macro station 2, which meets, is equal to default interference threshold -100dBm, therefore UE2 is by macro station 2 Interference, the measurement BLER=15% of edge customer UE3, receive macro station 1 and macro station 2 RSPR signal be respectively -105dBm and - 110dBm, the condition for being more than or equal to default interference threshold -100dBm is not satisfied in the RSPR signal of two macro stations at this time, therefore UE3 is not interfered by macro station 1 and macro station 2, mainly by the interference at other adjacent micro- stations；Therefore micro- station edge customer UE1 and UE2 are equal For the edge customer of poor quality interfered by macro station, then accounting=2/3=67% of the edge customer of poor quality interfered by macro station, Greater than preset interference threshold 60%, therefore show the interference of micro- station by macro station 1 and macro station 2.

Step 402, micro- station is estimated by the accounting that the edge customer of poor quality interfered by macro station meets its minimum resources demand ABS number of sub-frames is calculated, and issues interference macro station.

Minimum resources demand, which refers in the edge customer of poor quality interfered by macro station, in step 402 has minimum guarantee to business Rate requirement and the minimum value for having resource needed for the user of high standard to indexs such as time delay, rate, Block Error Rates；Such as LTE system N-GBR user in system, there is minimum guaranteed rate requirement, and GBR user has high standard to indexs such as time delay, rate, Block Error Rates It is quasi-.

The accounting of minimum resources demand indicates that the minimum resources of the edge customer of poor quality interfered by macro station need in step 402 The calculation formula (8) of the ratio for the downlink resource for asking Zhan total, the accounting p of minimum resources demand is as follows:

Wherein, N_RBIndicate that the total available PRB number of system bandwidth, i.e., total downlink resource, such as 20MHz system bandwidth are corresponding Total available RB number is 100；N_RBThe required minimum resources of ' expression by the edge customer of poor quality of macro interference.

ABS number of sub-frames N is calculated by the accounting p of minimum resources demand_{P_ABS}Formula (7) it is as follows:

Wherein, N_{sf_ABS}Indicate downlink subframe sum in the ABS sub-frame configuration period；The ABS sub-frame configuration period, which is in agreement, is The a cycle for being aligned and being arranged with the ascending HARQ turnaround time, it is related with system subframe configuration, such as TDD system Formula, when subframe is configured to 1~5, the ABS sub-frame configuration period is 20 subframes, i.e. 2 radio frames, wherein in this 20 subframes Downlink subframe sum be 12；For FDD standard, the unified ABS sub-frame configuration period is 40ms, i.e. 4 radio frames, wherein this 40 Downlink subframe sum in a subframe is 40.

Such as micro- station is in the case that 20M sub-frame configuration is 1 in system bandwidth, corresponding ABS period of sub-frame is 20ms, Downlink subframe sum is 12 in the ABS sub-frame configuration period, and available RB number corresponding to system bandwidth is 100, it is known that UE1 and The required minimum resources N of UE2 (being GBR user)_RB'=30, therefore the accounting of UE1 and UE2 minimum resources demandABS number of sub-frames N is estimated finally by the accounting p=30% of minimum resources demand_{P_ABS}Such as Under:

ABS number of sub-frames needed for minimum resources demand of the i.e. final micro- station to meet the user of poor quality interfered by macro station It is 4.

Step 403, macro station is a according to the ABS subframe of system loading, user resources demand number of sub-frames and micro- station request Number synthesis obtains ABS illustration sample.

System loading in step 403 refers to the load of macro station downlink subframe, which may include number of users, high quality Satisfaction, user resources utilization rate of user etc., the load by user channel quality detection cycle respectively to ABS subframe The load of identical downlink subframe number, which add up summing, in the configuration period takes statistical average to obtain.

User resources demand number of sub-frames in step 403 indicated within the ABS sub-frame configuration period, in macro station coverage area All pairs of business have minimum guaranteed rate requirement and have money needed for the user of high standard to indexs such as time delay, rate, Block Error Rates The minimum value in source corresponds to required number of sub-frames.Its calculation method can estimate the number of sub-frames side ABS with reference to station micro- in step 402 Method；For example, itself interior GBR and N-GBR user resources demand number of sub-frames of statistics ABS sub-frame configuration period in 1 coverage area of macro station It is 7, it is 10 that macro station 2, which counts itself GBR and N-GBR user resources demand number of sub-frames in the ABS sub-frame configuration period,.

The method of macro station configuration ABS illustration sample is in step 403:

Macro station free time number of sub-frames N is calculated first_{M_ABS}, calculation formula (2) is as follows:

N_{sf_ABS}Indicate downlink subframe sum, N in the ABS sub-frame configuration period_{sf_UE}Indicate macro station user resources demand subframe Number.

For example:

The idle number of sub-frames of macro station 1 is N_{M_ABS1}=N_{sf_ABS}-N_{sf_UE1}=12-7=5.

The idle number of sub-frames of macro station 2 is N_{M_ABS2}=N_{sf_ABS}-N_{sf_UE2}=12-10=2.

Secondly, by macro station free time number of sub-frames N_{M_ABS}With the ABS number of sub-frames N of micro- station request_{P_ABS}The two is compared To final ABS number of sub-frames N_ABS, it is specifically shown in formula (3):

α indicates the loss scale factor of macro station, and value range is (0,1), which is related in macro station coverage area to industry Business has minimum guaranteed rate requirement and has the damaed cordition of the user performance of high standard to indexs such as time delay, rate, Block Error Rates, Value configuration is excessive, causes macro station excessively to sacrifice high quality user performance to exchange the high quality user performance at micro- station for；Conversely, macro The ABS subframe configured of standing is very few and leads to not meet micro- station high quality user performance demand, such as the value can be configured to 0.5.

For example, the idle number of sub-frames N of macro station 1_{M_ABS1}=4 ABS number of sub-frames N requested with micro- station_{P_ABS}=4 is equal, The then final ABS number of sub-frames N of macro station 1_ABS1=N_{P_ABS}=4, the idle number of sub-frames N of macro station 2_{M_ABS2}=2 are less than micro- station request ABS number of sub-frames N_{P_ABS}=4 is equal, then the final ABS number of sub-frames N of macro station 2_ABS2=N_{M_ABS2}+(N_{P_ABS}-N_{M_ABS2}) * α=2+ (4-2) * 0.5=3.

Finally, macro station is ranked up from low to high according to the load of all downlink subframes in the ABS sub-frame configuration period, choose Meet final ABS number of sub-frames N_ABSSubframe as ABS subframe, obtain final ABS illustration sample.

For example, macro station 1 according in the ABS sub-frame configuration period all downlink subframes load according to resource utilization from The low to high result being ranked up be 1 subframe 0 of frame, 0 subframe 0 of frame, 1 subframe 5 of frame, 0 subframe 5 of frame, 0 subframe 1 of frame, 1 subframe 6 of frame, 1 subframe 1 of frame, 1 subframe 9 of frame, 0 subframe 9 of frame, 0 subframe 4 of frame, 0 subframe 6 of frame, 1 subframe 4 of frame are chosen and meet final ABS subframe Number is 0 subframe 0 of frame, 0 subframe 5 of frame, 1 subframe 0 of frame, 1 subframe 5 of frame as ABS subframe for 4 subframe, obtains final ABS illustration sample As shown in Figure 5.

Macro station 2 is according to the result that the load of all downlink subframes in the ABS sub-frame configuration period is ranked up from low to high 0 subframe 9 of frame, 1 subframe 0 of frame, 0 subframe 5 of frame, 1 subframe 5 of frame, 1 subframe 1 of frame, 0 subframe 1 of frame, 1 subframe 6 of frame, 1 subframe 9 of frame, 0 son of frame Frame 4,0 subframe 0 of frame, 0 subframe 5 of frame, 0 subframe 6 of frame, 1 subframe 4 of frame, selection meet the subframe that final ABS number of sub-frames is 3 and are 0 subframe 9 of frame, 1 subframe 0 of frame, 0 subframe 5 of frame are used as ABS subframe, and it is as shown in Figure 6 to obtain final ABS illustration sample.

Based on identical inventive concept, Fig. 7 shows a kind of structure of macro station, which can execute almost blank subframe Configuration flow.

As shown in fig. 7, the macro station specifically includes:

Receiving unit 701, the almost blank subframe ABS acquisition request sent for receiving micro- station, the ABS acquisition request The middle ABS number of sub-frames for carrying micro- station demand；

Determination unit 702, for according to the number of sub-frames and the interference for meeting the user demand under the interference macro station The sum of macro station downlink subframe within the ABS sub-frame configuration period determines the number of the idle subframe of the interference macro station；

Comparing unit 703, the number of the idle subframe for the interference macro station and ABS of micro- station demand Frame number determines the number of the ABS subframe of ABS subframe pattern to be generated；

Generation unit 704, for according to the load of downlink subframe in the ABS sub-frame configuration period and described to be generated The number of the ABS subframe of ABS subframe pattern determines the subframe position of each ABS subframe in the ABS subframe pattern to be generated, Generate ABS subframe pattern.

Preferably, the determination unit 702 is specifically used for:

Preferably, the comparing unit 703 is specifically used for:

Preferably, the generation unit 704 is specifically used for:

Based on identical inventive concept, Fig. 8 shows a kind of structure at micro- station, which can execute almost blank subframe Configuration flow.

As shown in figure 8, micro- station specifically includes:

Determination unit 801, for determining the edge customer interfered by macro station；From the edge customer interfered by macro station Determine that the first user, first user refer to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

Processing unit 802, for according to the edge customer interfered by macro station and first user, it is determined whether full Foot obtains the condition of ABS subframe pattern；If so, according to it is described it is micro- pack foot first user needed for minimum resources, be It commands wide total resources and the sum of downlink subframe determines the number of micro- station demand ABS subframe in the ABS sub-frame configuration period

Transmission unit 803 carries described true for sending ABS acquisition request to interference macro station in the ABS acquisition request The ABS number of sub-frames of fixed micro- station demand.

Preferably, the processing unit 802 is specifically used for:

The number of demand ABS subframe is determined according to formula (4)；

The formula (4) are as follows:

Preferably, the processing unit 802 is specifically used for:

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of configuration method of almost blank subframe characterized by comprising

Interference macro station receives the almost blank subframe ABS acquisition request that micro- station is sent, and carrying micro- station in the ABS acquisition request needs The ABS number of sub-frames asked；The ABS number of sub-frames of micro- station demand be it is described it is micro- station according to it is described it is micro- pack foot the first user institute The total resources of the resources requirement, system bandwidth that need and in the ABS sub-frame configuration period sum of downlink subframe determine, described the One user refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

The interference macro station is according to the number of sub-frames and the interference macro station for meeting the user demand under the interference macro station in ABS The sum of downlink subframe in the sub-frame configuration period determines the number of the idle subframe of the interference macro station；

The number of the idle subframe of the interference macro station interference macro station and the ABS number of sub-frames of micro- station demand, Determine the number of the ABS subframe of ABS subframe pattern to be generated；

Load and the to be generated ABS subframe of the interference macro station according to downlink subframe in the ABS sub-frame configuration period The number of the ABS subframe of pattern determines the subframe position of each ABS subframe in the ABS subframe pattern to be generated, generates ABS Subframe pattern；

Wherein, the number of the ABS subframe of the ABS subframe pattern to be generated is determined according to formula (3):

Wherein, N_ABSIndicate the number of the ABS subframe of ABS subframe pattern to be generated, N_{M_ABS}Indicate the idle subframe of interference macro station Number, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, α indicates the loss scale factor of interference macro station, and value range is (0,1)。

2. the method as described in claim 1, which is characterized in that determine the use met under the interference macro station according to formula (1) The number of sub-frames of family demand:

Wherein, N_{sf_UE}Indicate the number of sub-frames for meeting the user demand under interference macro station, N_{sf_ABS}Indicate the ABS sub-frame configuration period The sum of interior downlink subframe, N '_{RB_UE}Indicate the resources requirement for meeting user's minimum resources demand under interference macro station, N_RBTable Show the total resources of system bandwidth.

3. method according to claim 2, which is characterized in that determine the idle subframe of the interference macro station according to formula (2) Number:

Wherein, N_{M_ABS}Indicate the number of the idle subframe of interference macro station, N_{sf_UE}Indicate to meet the user demand under interference macro station Number of sub-frames, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

4. the method as described in claim 1, which is characterized in that according in the ABS sub-frame configuration period downlink subframe it is negative The number of the ABS subframe of lotus and the ABS subframe pattern to be generated, determines each ABS in the ABS subframe pattern to be generated The subframe position of subframe generates ABS subframe pattern, comprising:

According to the number of the ABS subframe of the ABS subframe pattern to be generated, downlink out of described the ABS sub-frame configuration period The minimum subframe of the load of frame starts to choose, and obtains the subframe position of each ABS subframe in the ABS subframe pattern to be generated, Generate ABS subframe pattern.

5. the method as described in claim 1, which is characterized in that the ABS number of sub-frames of micro- station demand be by micro- station according to Resources requirement, the total resources of system bandwidth and downlink in the ABS sub-frame configuration period needed for the first user interfered by macro station What the sum of subframe determined, first user refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding.

6. a kind of configuration method of almost blank subframe characterized by comprising

Micro- station determines the edge customer interfered by macro station；The first user is determined from the edge customer interfered by macro station, First user refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

Micro- station is according to the edge customer interfered by macro station and first user, it is determined whether meets and obtains ABS The condition of frame pattern；

If so, micro- station according to it is micro- pack foot first user needed for resources requirement, system bandwidth total resources The ABS number of sub-frames of micro- station demand is determined with the sum of downlink subframe in the ABS sub-frame configuration period；

Micro- stand sends ABS acquisition request to interference macro station, and micro- station of the determination is carried in the ABS acquisition request The ABS number of sub-frames of demand, so that the interference macro station is according to the number of sub-frames for meeting the user demand under the interference macro station With the sum of interference macro station downlink subframe within the ABS sub-frame configuration period, the idle subframe of the interference macro station is determined Number；Compare the number of the idle subframe of the interference macro station and the ABS number of sub-frames of micro- station demand, determines to be generated The number of the ABS subframe of ABS subframe pattern；

7. method as claimed in claim 6, which is characterized in that determine the ABS subframe of micro- station demand according to formula (4) Number；

The formula (4) are as follows:

Wherein, N_{P_ABS}Indicate the ABS number of sub-frames of micro- station demand, N_RB' indicate minimum resources demand needed for meeting the first user Amount, N_RBIndicate the total resources of system bandwidth, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

8. method as claimed in claim 6, which is characterized in that micro- station according to the edge customer interfered by macro station and First user, it is determined whether meet the condition for obtaining ABS subframe pattern, comprising:

Determine whether the accounting of first user is greater than interference threshold, the accounting of first user is first user's The ratio of quantity and the quantity of the edge customer interfered by macro station；

9. a kind of macro station characterized by comprising

Receiving unit carries in the ABS acquisition request for receiving the almost blank subframe ABS acquisition request of micro- station transmission The ABS number of sub-frames of micro- station demand；The ABS number of sub-frames of micro- station demand be it is described it is micro- station according to it is described it is micro- pack foot first Resources requirement needed for user, the total resources of system bandwidth and the sum determination of downlink subframe in the ABS sub-frame configuration period, First user refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

Determination unit, the number of sub-frames and the interference macro station for interfering the user demand under macro station according to satisfaction are in ABS Frame configures the sum of downlink subframe in the period, determines the number of the idle subframe of the interference macro station；

Comparing unit, the number of the idle subframe for the interference macro station and the ABS number of sub-frames of micro- station demand, Determine the number of the ABS subframe of ABS subframe pattern to be generated；

Generation unit, for according to downlink subframe in the ABS sub-frame configuration period load and the ABS subframe to be generated The number of the ABS subframe of pattern determines the subframe position of each ABS subframe in the ABS subframe pattern to be generated, generates ABS Subframe pattern；

Wherein, the comparing unit is specifically used for:

Wherein, N_ABSIndicate the number of the ABS subframe of ABS subframe pattern to be generated, N_{M_ABS}Indicate the idle subframe of interference macro station Number, N_{P_ABS}Indicate the number of the ABS subframe of micro- station demand, α indicates the loss scale factor of interference macro station, and value range is (0,1)。

10. macro station as claimed in claim 9, which is characterized in that the determination unit is specifically used for:

11. macro station as claimed in claim 9, which is characterized in that the determination unit is specifically used for:

12. macro station as claimed in claim 9, which is characterized in that the generation unit is specifically used for:

13. macro station as claimed in claim 9, which is characterized in that the ABS number of sub-frames of micro- station demand be by micro- station according to Resources requirement, the total resources of system bandwidth and downlink in the ABS sub-frame configuration period needed for the first user interfered by macro station What the sum of subframe determined, first user refers to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding.

14. a kind of micro- station characterized by comprising

Determination unit, for determining the edge customer interfered by macro station；It is determined from the edge customer interfered by macro station First user, first user refer to that channel quality is more than or equal to the edge customer that channel quality deteriorates thresholding；

Processing unit, for according to the edge customer interfered by macro station and first user, it is determined whether meet and obtain The condition of ABS subframe pattern；If so, according to it is described it is micro- pack foot first user needed for minimum resources, system bandwidth Total resources and the sum of downlink subframe determines the number of micro- station demand ABS subframe in the ABS sub-frame configuration period；

Transmission unit carries the institute of the determination for sending ABS acquisition request to interference macro station in the ABS acquisition request The ABS number of sub-frames of micro- station demand is stated, so that the interference macro station is according to the son for meeting the user demand under the interference macro station The sum of frame number and interference macro station downlink subframe within the ABS sub-frame configuration period determines the free time of the interference macro station The number of subframe；Compare it is described interference macro station idle subframe number and micro- station demand ABS number of sub-frames, determine to The number of the ABS subframe of the ABS subframe pattern of generation；

15. micro- station as claimed in claim 14, which is characterized in that the processing unit is specifically used for:

The number of demand ABS subframe is determined according to formula (4)；

The formula (4) are as follows:

Wherein, N_{P_ABS}Indicate the number of the ABS subframe of micro- station demand, N_RB' indicate minimum resources need needed for meeting the first user The amount of asking, N_RBIndicate the total resources of system bandwidth, N_{sf_ABS}Indicate the sum of downlink subframe in the ABS sub-frame configuration period.

16. micro- station as claimed in claim 14, which is characterized in that the processing unit is specifically used for: