CN102158910A

CN102158910A - Method, system and equipment for carrying out interference coordination

Info

Publication number: CN102158910A
Application number: CN2011100936963A
Authority: CN
Inventors: 徐婧; 潘学明; 沈祖康; 宋月霞
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2011-04-14
Filing date: 2011-04-14
Publication date: 2011-08-17
Anticipated expiration: 2031-04-14
Also published as: WO2012139441A1; CN102158910B

Abstract

The embodiment of the invention relates to the technical field of wireless communication, and in particular relates to a method, system and equipment for carrying out interference coordination, wherein the method, system and equipment provided by the invention are used for lowering time slot interference under the scene that the requirement ratio of the uplink service to the downlink service is dynamically changed. The method in the embodiment of the invention comprises: first network side equipment determines interference coordination information, and transmits the interference coordination information to second network side equipment around the first network side equipment to inform the second network side equipment of performing interference coordination on the interference coordination information. As the interference coordination information for interference coordination can be informed to the second network side equipment, the time slot interference caused by different uplink and downlink configurations can be lowered under the scene that the requirement ratio of the uplink service to the downlink service is dynamic changed, thereby further improving the system stability and performance.

Description

A kind of method, system and equipment that carries out interference coordination

Technical field

The present invention relates to wireless communication technology field, particularly a kind of method, system and equipment that carries out interference coordination.

Background technology

Basic duplex mode for the cellular system employing, TDD (Time division duplex, time division duplex) pattern is meant that uplink downlink uses same working band, on the different time intervals, carry out the transmission of uplink and downlink signals, have between the up-downgoing protection at interval (Guard Period, GP); FDD (Frequency division duplex; Frequency Division Duplexing (FDD)) pattern refers to that then uplink downlink uses different working bands; can when same, be engraved in the transmission of carrying out uplink and downlink signals on the different frequency carriers, have between the up-downgoing protection bandwidth (Guard Band, GB).

The frame structure of LTE (Long Term Evolution, Long Term Evolution) TDD system is complicated slightly, and shown in Figure 1A, a radio frames length is 10ms, comprises special subframe and conventional subframe two classes totally 10 subframes, and each subframe is 1ms.Special subframe is divided into 3 subframe: DwPTS (Downlink Pilot Time Slot, the descending pilot frequency subframe) is used to transmit PSS (Primary Synchronization Signal, master sync signal), PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel), PHICH (Physical HARQ Indication Channel, the automatic request retransmission indicating channel of physical mixed), PCFICH (Physical Control Format Indication Channel, Physical Control Format Indicator Channel), PDSCH (Physical Downlink Shared Channel, physical down link sharing channel) etc.; GP be used between descending and up protection at interval); UpPTS (Uplink Pilot Time Slot, ascending pilot frequency subframe) is used for transmitting SRS (Sounding Reference Signal surveys and uses reference signal), PRACH (Physical Random Access Channel, Physical Random Access Channel) etc.Conventional subframe comprises sub-frame of uplink and descending sub frame, is used to transmit up/down control channel and business datum etc.Wherein in a radio frames, can dispose two special subframes (being positioned at subframe 1 and 6), also can dispose a special subframe (being positioned at subframe 1).Always as downlink transfer, the UpPTS subframe in subframe 2 and the special subframe always is used for uplink to DwPTS subframe in subframe 0 and subframe 5 and the special subframe, and other subframes can be configured to as uplink or downlink transfer according to needs.

Identical frequency resource is used in the uplink and downlink transmission in the TDD system, transmits uplink/downlink signals on different subframes.In common TDD system, comprise TD-SCDMA (TD SDMA) system of 3G and the TD-LTE system of 4G, the division of uplink and downlink subframe is static or semi-static, and common way is to determine the division of ascending-descending subframes ratio according to cell type and business proportion roughly and remain unchanged in network planning process.This is comparatively simple way under the background of the big covering of macrocell, and also comparatively effective.And along with technical development, increasing Microcell (Pico cell), Home eNodeB low power base station such as (Home NodeB) is used to provide the little covering of part by deployment, in this class sub-district, number of users is less, and the customer service changes in demand is bigger, so there is situation about dynamically changing in the up-downgoing business proportion demand of sub-district.

In real system,, then can cause the cross time-slot of neighbor cell to disturb if different sub-districts is provided with different ascending-descending subframes configurations.Macrocell is on the time slot that sends downstream signal, femto cell (Femto cell) is used for upward signal and receives, then occur between two sub-districts: base-station, base-station disturbs, the femto base station directly receives the downstream signal of Macro base station, to have a strong impact on the quality that the femto base station receives L-UE (Local UE, local UE) upward signal.The neighbor cell here can be geographical sub-district (shown in Figure 1B) of the adjacent same TDD carrier wave of use, or geography is gone up sub-district (shown in Fig. 1 C) overlapping or that use adjacent TDD carrier wave.But at present under the scene that dynamically changes for up-downgoing business proportion demand, also do not solve the scheme that cross time-slot disturbs.

In sum, at present under the scene that dynamically changes for up-downgoing business proportion demand, also do not solve the scheme of time slot interference.

Summary of the invention

The embodiment of the invention provides a kind of method, system and equipment that carries out interference coordination, under the scene that dynamically changes for up-downgoing business proportion demand, reduces time slot interference.

A kind of method of carrying out interference coordination that the embodiment of the invention provides comprises:

First network equipment is determined interference coordination information;

Described first network equipment sends interference coordination information to being in first network equipment, second network equipment on every side, is used to notify described second network equipment to carry out interference coordination according to described interference coordination information.

The another kind that the embodiment of the invention provides carries out the method for interference coordination, comprising:

Second network equipment receives the interference coordination information that first network equipment is determined, wherein second network equipment is to be in first network equipment network equipment on every side;

Described second network equipment is adjusted the downlink transmission power value according to the interference coordination information of receiving.

A kind of first network equipment that carries out interference coordination that the embodiment of the invention provides comprises:

The information determination module is used for determining interference coordination information;

Sending module is used for sending interference coordination information to being in first network equipment, second network equipment on every side, is used to notify described second network equipment to carry out interference coordination according to described interference coordination information.

A kind of second network equipment that carries out interference coordination that the embodiment of the invention provides comprises:

Receiver module is used to receive the interference coordination information that first network equipment is determined, wherein second network equipment is to be in first network equipment network equipment on every side;

Processing module is used for adjusting the downlink transmission power value according to the interference coordination information of receiving.

A kind of system that carries out interference coordination that the embodiment of the invention provides comprises:

First network equipment is used for determining interference coordination information, sends interference coordination information to being in first network side, second network equipment on every side;

Second network equipment is used for adjusting the downlink transmission power value according to the interference coordination information of receiving.

Owing to can be used to carry out the interference coordination information of interference coordination to second network equipment notice, thereby under the scene that up-downgoing business proportion demand dynamically changes, reduce the time slot interference that the uplink-downlink configuration difference causes; The stability of a system and performance have further been improved.

Description of drawings

Figure 1A is a TD-LTE system frame structure schematic diagram;

Figure 1B cross time-slot when using identical TDD carrier wave disturbs schematic diagram;

Fig. 1 C cross time-slot when using adjacent TDD carrier wave disturbs schematic diagram;

Fig. 2 carries out the system configuration schematic diagram of interference coordination for the embodiment of the invention;

Fig. 3 is the embodiment of the invention first network equipment structural representation;

Fig. 4 is the embodiment of the invention second network equipment structural representation;

Fig. 5 is first kind of method flow schematic diagram that carries out interference coordination of the embodiment of the invention;

Fig. 6 is second kind of method flow schematic diagram that carries out interference coordination of the embodiment of the invention.

Embodiment

The embodiment of the invention first network equipment sends interference coordination information to being in first network equipment, second network equipment on every side, is used to notify second network equipment to carry out interference coordination according to interference coordination information.Owing to can be used to carry out the interference coordination information of interference coordination to second network equipment notice, thereby under the scene that up-downgoing business proportion demand dynamically changes, reduce the time slot interference that the uplink-downlink configuration difference causes.

Wherein, the embodiment of the invention can be applied to (such as the TD-LTE system) in the TDD system, also can be applied to other needs dynamically to adjust in the system of subframe uplink-downlink configuration, for example TD-SCDMA system and follow-up evolution system thereof, WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access global inter communication) system and follow-up evolution system thereof etc.

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.

In the declarative procedure below, implement to describe from the cooperation of two network equipments earlier, describe from the enforcement of two network equipments respectively at last, but this does not also mean that the two must cooperate enforcement, in fact, when two network equipments are separately implemented, also solved respectively two existing problems of network equipment, when just the two is used in combination, can obtain better technique effect.。

As shown in Figure 2, the embodiment of the invention system that carries out interference coordination comprises: first network equipment 10 and second network equipment 20.

First network equipment 10 is used for determining interference coordination information, sends interference coordination information to being in first network side 10, second network equipment 20 (promptly first network equipment 10 is subjected to the interference of second network equipment 20) on every side.

Can in carrying out the sub-district uplink-downlink configuration, determine to disturb harmony messages such as first network equipment 10; Can also after receiving high-rise notice, determine to disturb harmony messages.

Second network equipment 20 is used to receive interference coordination information, adjusts the downlink transmission power value according to the interference coordination information of receiving.

Wherein, being in first network equipment 10, second network equipment 20 on every side can be to be in first network equipment all-network side apparatus on every side; Also can be to be in around first network equipment and to produce the network equipment that disturbs to first network equipment 10.

First network equipment 10 can adopt following manner to determine the network equipment that is disturbed by first network equipment:

First network equipment 10 is measured the uplink-downlink configuration information that obtains the ambient network side apparatus, and then judgement can cause the network equipment of cross time-slot interference; Or

The ambient network equipment signaling is notified the uplink-downlink configuration information of first network equipment, 10 ambient network equipment, and then judgement can cause the network equipment of cross time-slot interference; Or

First network equipment 10 is with oneself uplink-downlink configuration or pre-configured signaling ambient network side apparatus, and the ambient network side apparatus judges that according to this information whether can form cross time-slot disturbs, and whether feedback is subjected to the information of loud, high-pitched sound interference.

Need to prove that the embodiment of the invention is not limited to aforesaid way, other can determine all to be suitable for the embodiment of the invention by the mode of the network equipment of first network equipment interference.

Preferable, first network equipment 10 is before second network equipment 20 sends interference coordination information, can measure the peripheral base station deployment scenario earlier, such as determining effective interference base station number and RSRP (Reference Signal Receiving Power separately, Reference Signal Received Power) value, and/or with the mutual base station configuration information of peripheral base station, wherein configuration information comprises but is not limited at least a in the following message: transmitting power, resource allocation information.

Wherein, when first network equipment 10 carries out the uplink-downlink configuration of local area again according to the interference effect of business demand or other sub-district or other reason needs, this configuration may bring the inter base station interference problem, as adjacent area subframe n is descending sub frame, when first network equipment, 10 configuration subframe n were sub-frame of uplink, the adjacent area can disturb local area to receive data.First network equipment 10 needs to consider that interference effect limits the configuration of this subframe or the descending power configuration of coordinates interference adjacent area.

Preferable, a kind of mode that first network equipment 10 can pass through in air interface, X2 interface, S1 interface and the terminal forwarding sends the interference coordination information to second network equipment 20.

The terminal pass-through mode can be that first network equipment 10 sends to terminal with interference coordination information, is transmitted to second network equipment 20 by terminal.

Need to prove that the embodiment of the invention is not limited to the mode of above-mentioned transmission interference coordination information, other modes that can send interference coordination information all are suitable for the embodiment of the invention.

Preferable, when 10 pairs of ascending-descending subframes of cell of first network equipment are configured, if the interference value that the subframe that detects is subjected to is higher than the interference value that first network equipment 10 can bear, and is descending sub frame or the transmitted power of not dispatching or improve dispatched users on this subframe with this sub-frame configuration; If the interference value that the subframe that detects is subjected to is not higher than the interference value that first network equipment 10 can bear, and is sub-frame of uplink with this sub-frame configuration.

In force, first network equipment 10 can be monitored part or all of needs and is configured to up subframe.

Preferable, if second network equipment 20 is adjusted the downlink transmission power value according to the interference coordination information of receiving, then second network equipment 20 can be adjusted first network equipment 10 is produced the downlink transmission power value of the descending sub frame that disturbs or adjusts the downlink transmission power value of whole descending sub frames

Interference coordination information can be the information how requirement second network equipment is adjusted.Preferable, interference coordination information can be a kind of in the following message: the maximum transmission power threshold value, disturb ability to bear threshold value and power adjustment.Be introduced respectively below.

Mode one, interference coordination information are the maximum transmission power threshold values.The maximum transmission power threshold value makes interference level in first network equipment, 10 ability to bear scopes.The maximum transmission power threshold value can be used to limit the transmitting power of second network equipment, 20 all descending sub frames, also can only be used to limit second network equipment 20 to the influential descending sub frame in other sub-district.

Can to be network equipment determine according to actual conditions the ability to bear of first network equipment 10, or the equipment configuration of dispatching from the factory, or standard convention etc.

Concrete, first network equipment 10 is according to the facility information of first network equipment 10 and/or the facility information of second network equipment 20, determine to allow the maximum transmission power threshold value of second network equipment 20, and with the maximum transmission power threshold value as interference coordination information;

Wherein, the maximum transmission power threshold value is used for limiting the transmitting power of all descending sub frames of second network equipment 20 or second network equipment to the noisy descending sub frame in adjacent sub-district.

In the enforcement, the facility information of first network equipment 10 includes but not limited at least a in the following message:

Spectrum allocation may information, resource scheduling information and interference ability to bear value.

The facility information of second network equipment 20 includes but not limited at least a in the following message:

Path loss values, Reference Signal Received Power value, spectrum allocation may information and resource scheduling information between second network equipment 20 and first network equipment 10.

Wherein, first network equipment 10 determines that the mode of the facility information of second network equipment 20 has a lot, such as measurement; Signaling.

The facility information of the facility information of first network equipment 10 and second network equipment 20 can be to measure to obtain, or signaling, or standard convention.

Preferable, first network equipment 10 can be determined the maximum transmission power threshold value according to formula one or formula two:

P _{Max_tx}=I _{A → B}+ ACIR _Bs-bs+ max (pathloss, MCL) ... ... formula one;

P _{Max_tx}=I _{A → B}+ max (pathloss, MCL) ... ... formula two;

Wherein, P _{Max_tx}It is the maximum transmission power threshold value; I _{A → B}It is the interference threshold value of first network equipment, second network equipment that can bear;

ACLR wherein _ABe the Adjacent Channel Leakage Power Ratio value (adjacent channel leakage power radio) of second network equipment 20, ACS _BIt is the adjacentchannel selectivity value (adjacent channel selectivity) of first network equipment 10; Pathloss is a path loss values; MCL is the minimum coupling loss value.

Preferable, if I _{A → B}It is the interference threshold value that second network equipment 20 that first network equipment 10 can bear disturbs, this value can be the agreement agreement, or equipment Default Value, or according to actual conditions calculating acquisition (received power value such as useful signal is conciliate the pitch limit value, calculates the interference threshold value that can bear).

Preferable, first network equipment 10 is determined I according to total interference threshold that first network equipment can bear _{A → B}Wherein, I _{A → B}Be not more than total interference power values that first network equipment can bear.

Wherein, first network equipment 10 is determined I according to total interference threshold that first network equipment can bear _{A → B}Mode have a variety ofly, enumerate several below.

(1), first network equipment 10, total interference power values that first network equipment 10 can be born multiply by the weighting parameters of each second network equipment, 20 correspondence respectively, obtains the I of second network equipment, 20 correspondences _Ai-＞B

Such as determining the weighting parameters of each second network equipment, 20 correspondence, for example disturb big more weighting parameters big more according to the disturbance regime of 20 pairs first network equipments 10 of second network equipment;

Total interference power values that first network equipment 10 can be born multiply by the weighting parameters of each second network equipment, 20 correspondence respectively then, obtains the I of each second network equipment, 20 correspondence respectively _Ai-＞BBe the I of each second network equipment, 20 correspondence of this mode _Ai-＞BMight be identical also possible different.

(2), first network equipment 10, total interference power values that first network equipment 10 can be born is divided by the quantity of second network equipment, obtains the I of second network equipment, 20 correspondences _Ai-＞BBe the I of each second network equipment, 20 correspondence of this mode _Ai-＞BAll identical.

Preferable, the interference that forms when second network equipment 20 when first network equipment 10 receives outside the bandwidth, ACIR _Bs-bsBe 0;

When interference that second network equipment 20 forms when first network equipment 10 receives outside the bandwidth, according at least a definite ACLR and the ACS in the following manner, and determine ACIR according to ACLR and ACS _Bs-bs

Wherein, the mode of determining ACLR and ACS comprises:

Rule of thumb value is determined ACLR and/or ACS;

Determine ACLR and/or ACS according to reference value;

Determine ACLR and/or ACS;

By determining ACS by the notice of signaling according to high level;

According to the definite ACLR of self configuration.

Such as adopting wherein a kind of mode to determine ACS, adopt another kind of mode to determine ACLR.

Preferable, when determining a plurality of ACLR,, from a plurality of ACLR, select an ACLR according to frequency allocation situation or scheduling of resource situation;

When determining a plurality of ACS,, from a plurality of ACS, select an ACS according to frequency allocation situation or scheduling of resource situation.

If determine ACLR and/or ACS according to reference value, can preestablish the corresponding relation of frequency allocation situation and reference value and/or the corresponding relation of scheduling of resource situation and reference value, just can determine frequency allocation situation or the scheduling of resource situation corresponding reference value of self then according to corresponding relation.The corresponding relation of the corresponding relation of wherein, frequency allocation situation and reference value and/or scheduling of resource situation and reference value can be referring to 3GPP TS 36.101 or 3GPP TS 36.104 agreements.

If rule of thumb value is determined ACLR and/or ACS, can also preestablish the corresponding relation of frequency allocation situation and empirical value and/or the corresponding relation of scheduling of resource situation and empirical value, just can determine frequency allocation situation or the scheduling of resource situation corresponding reference value of self then according to corresponding relation.

Preferable, pathloss measures, or Signalling exchange, or both are in conjunction with acquisition.This value has comprised penetration loss, factors such as antenna gain.

MCL can adopt empirical value (emulation acquisition), or the equipment configuration of dispatching from the factory, or the agreement agreement.

Mode two, interference coordination information are to disturb the ability to bear threshold value.

Concrete, first network equipment 10 is determined I _{A → B}, and with I _{A → B}As interference coordination information;

Wherein, I _{A → B}It is the threshold value that first network equipment, second network equipment that can bear disturbs.

If second network equipment 20 is adjusted the downlink transmission power value according to the interference coordination information of receiving, then second network equipment can be determined the downlink transmission power value that needs are adjusted according to formula three or formula four:

P _Tx=I _{DL → UL}+ max (pathloss, MCL) ... ... formula three;

P _Tx=I _{DL → UL}+ ACIR _Bs-bs+ max (pathloss, MCL) ... ... formula four;

Wherein, P _TxIt is the downlink transmission power value that needs adjustment; I _{DL → UL}It is minimum interference threshold value in the interference threshold value of the interference threshold value of first network equipment 10 received or a plurality of disturbed network equipment notice received;

ACLR wherein _ABe the Adjacent Channel Leakage Power Ratio value of second network equipment 20, ACS _BIt is the adjacentchannel selectivity value of first network equipment 10; Pathloss is a path loss values; MCL is the minimum coupling loss value.

Wherein, first network equipment 10 is determined I according to total interference threshold that first network equipment can bear _{A → B}Mode have a variety ofly, specifically can not repeat them here referring to mode one.

Wherein, the mode of determining ACLR and ACS comprises:

Determine ACLR and/or ACS according to frequency allocation situation or scheduling of resource situation;

Pass through signaling ACS by high level;

According to self configuration acquisition ACLR.

Mode three, interference coordination information are power adjustment.For mode three, preferable, being in first network equipment 10, second network equipment 20 on every side is that first network equipment 10 is produced the network equipment that disturbs.

If power adjustment, represents then that power adjusts upward greater than 0; If power adjustment, is then represented power less than 0 and is adjusted downwards; If power adjustment equals 0, represent that then power need not to adjust.

Be that the network equipment that first network equipment 10 is produced interference is that example describes with second network equipment 20 below.

Concrete, first network equipment 10 is determined power adjustment, and with power adjustment as interference coordination information.

Wherein, first network equipment 10 determines that the mode of power adjustment has a lot, enumerates several below.

(1), first network equipment 10 is determined power adjustment according to formula five or formula six:

P _A=I _{A → B}-RSRP _A... ... formula five;

P _A=min (I _{A → B}-RSRP _A, 0) ... ... formula six;

Wherein, P _AIt is value and power reference; I _{A → B}It is the threshold value that first network equipment, second network equipment that can bear disturbs; RSRP _AIt is the Reference Signal Received Power value of the second network measurement equipment that measures of first network equipment;

First network equipment 10 is determined power adjustment according to value and power reference.

Preferable, first network equipment 10 selects minimum value as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment, 20 correspondence, and determines the power adjustment of each second network equipment, 20 correspondence according to value and power reference; Or

First network equipment 10 is averaged as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment, 20 correspondence, and determines the power adjustment of each second network equipment, 20 correspondence according to value and power reference.

Preferable, first network equipment 10 can also be by a kind of definite power adjustment in the following manner.

Mode A1, first network equipment 10 can be with the power adjustment of value and power reference as second network equipment 20 of corresponding each generation interference.

Mode A2, first network equipment 10 are selected power adjustment according to value and power reference from the power adjustment set.

Preferable, if the interference value that first network equipment 10 can bear is greater than the interference value that measures, then from power adjustment set, select one near value and power reference and be not more than 0 numerical value as power adjustment, if the interference value that first network equipment 10 can bear is not more than the interference value that measures, then from power adjustment set, select one near value and power reference and greater than 0 numerical value as power adjustment.

Suppose that power adjustment set is p ∈ Δ p={10dBm, 5dBm, 1dBm ,-1dBm} supposes that value and power reference is 8, then can select 10dBm as power adjustment.

Specifically can determine the value in the power adjustment set as required.

Mode A3, first network equipment 10 are adjusted the step value set from power according to value and power reference and are selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

Preferable, first network equipment 10 is determined the step value of the scope correspondence that value and power reference is affiliated according to the corresponding relation of step value in predefined value range and the set of power adjustment step value.Accordingly, second network equipment 20 is only adjusted a step sizes at every turn.

Specifically can determine value and corresponding relation in the power adjustment set of steps as required.

(2), first network equipment 10 is determined value and power reference according to formula seven or formula eight, and is determined power adjustment according to value and power reference;

P _A=I _{A → B}-I _{A_measurement}... ... formula seven;

P _A=min (I _{A → B}-I _{A_measurement}, 0) ... ... formula eight;

Wherein, I _{A_measurement}It is the second network equipment interference value that first network equipment measures; I _{A → B}It is the threshold value that first network equipment, second network equipment that can bear disturbs.

Preferable, first network equipment 10 can be by a kind of definite power adjustment in the following manner.

Mode B1, first network equipment 10 can be with the power adjustment of value and power reference as second network equipment 20 of corresponding each generation interference.

Mode B2, first network equipment 10 are selected power adjustment according to value and power reference from the power adjustment set.

Specifically can determine the value in the power adjustment set as required.

Mode B3, first network equipment 10 are adjusted the step value set from power according to value and power reference and are selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

Preferable, first network equipment 10 is determined the step value of the scope correspondence that value and power reference is affiliated according to the corresponding relation of step value in predefined value range and the set of power adjustment step value.

(3), first network equipment 10 total interference value I that will measure _mTotal interference power values I that can bear with first network equipment _AcceptIt is poor to do, and determines power adjustment total value according to difference; Adjust total value according to power, determine that each produces the power adjustment of second network equipment 20 that disturbs.

Preferable, first network equipment 10 can obtain value and power reference divided by producing second network equipment, 20 quantity of disturbing with difference, determines that according to value and power reference each produces the power adjustment of second network equipment 20 that disturbs; Or

First network equipment 10 is determined the weights of each second network equipment 20, and the weights that difference multiply by each second network equipment 20 are respectively obtained value and power reference, determine that according to value and power reference each produces the power adjustment of second network equipment 20 that disturbs.

Mode C1, first network equipment 10 are with the power adjustment of power adjustment as second network equipment of corresponding each generation interference.

Such as adopting difference divided by producing second network equipment, 20 quantity of disturbing, obtain value and power reference, determine that according to value and power reference each produces the mode of the power adjustment of second network equipment 20 that disturbs, then first network equipment 10 produces the power adjustment of second network equipment 20 that disturbs with power adjustment as each.Be that each power adjustment that produces second network equipment that disturbs all is same.

Such as employing the weights that difference multiply by each second network equipment are respectively obtained value and power reference, determine that according to value and power reference each produces the mode of the power adjustment of second network equipment 20 that disturbs, then first network equipment 10 produces power adjustment the power adjustment of second network equipment 20 that disturbs as correspondence.Be that each power adjustment that produces second network equipment that disturbs is independently.

Mode C2, first network equipment 10 are selected power adjustment according to power adjustment from the power adjustment set.

If adopt difference divided by producing second network equipment, 20 quantity of disturbing, obtain value and power reference, determine that according to value and power reference each produces the mode of the power adjustment of second network equipment 20 that disturbs, then 10 needs of first network equipment are selected one;

If adopt the weights that difference be multiply by each second network equipment respectively, obtain value and power reference, determine that according to value and power reference each produces the mode of the power adjustment of second network equipment that disturbs, then first network equipment 10 need be selected once according to the value of each second network equipment, 20 correspondence.

Mode C3, first network equipment 10 are adjusted the step value set from power according to power adjustment and are selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

If adopt difference is obtained value and power reference divided by producing second network equipment, 20 quantity of disturbing, determine that according to value and power reference each produces the mode of the power adjustment of second network equipment 20 that disturbs, then 10 needs of first network equipment are selected one;

If employing obtains value and power reference with the weights that difference multiply by each second network equipment respectively, determine that according to value and power reference each produces the mode of the power adjustment of second network equipment that disturbs, then first network equipment 10 need be selected once according to the value of each second network equipment, 20 correspondence.

Preferable, can be for mode three, the first network equipments 10 according to the time of setting, the cycle sends interference coordination information.The concrete time can be set as required.

In force, second network equipment 20 can have a plurality of, if a kind of interference coordination information of respectively determining each second network equipment 20 of a plurality of second network equipment, 20, the first network equipments 10 in is in the manner described above arranged, and sends to the second corresponding network equipment 20.

Wherein, the network equipment of the embodiment of the invention can be base station (such as macro base station, a Home eNodeB etc.), also can be RN (relaying) equipment, can also be other network equipment.

Based on same inventive concept, the method that two kinds of network equipments also is provided in the embodiment of the invention and has carried out interference coordination, because principle that these equipment and method are dealt with problems and the system similarity that carries out interference coordination, therefore the enforcement of these equipment and method can repeat part and repeat no more referring to the enforcement of system.

As shown in Figure 3, the embodiment of the invention first network equipment comprises: information determination module 100 and sending module 110.

Information determination module 100 is used for determining interference coordination information.

Sending module 110 is used for sending the interference coordination information that information determination module 100 is determined to being in first network side, second network equipment on every side, is used to notify second network equipment to carry out interference coordination according to interference coordination information.

Preferable, information determination module 100 is according to the facility information of first network equipment and/or the facility information of second network equipment, determine to allow the maximum transmission power threshold value of second network equipment, and with the maximum transmission power threshold value as interference coordination information;

Wherein, the maximum transmission power threshold value is used for limiting the transmitting power of all descending sub frames of second network equipment or second network equipment to the noisy descending sub frame in adjacent sub-district.

Preferable, information determination module 100 is determined the maximum transmission power threshold value according to following formula:

P _{Max_tx}=I _{A → B}+ ACIR _Bs-bs+ max (pathloss, MCL); Or

P _{max_tx}＝I _A→B+max(pathloss，MCL)；

ACLR wherein _ABe the Adjacent Channel Leakage Power Ratio value of second network equipment, ACS _BIt is the adjacentchannel selectivity value of first network equipment; Pathloss is a path loss values; MCL is the minimum coupling loss value.

Preferable, information determination module 100 is determined I _{A → B}, and with I _{A → B}As interference coordination information;

Preferable, the information determination module specifically is used for:

Determine power adjustment, and with power adjustment as interference coordination information.

Preferable, information determination module 100 is determined difference according to following formula, and determines power adjustment according to value and power reference;

P _A=I _{A → B}-RSRP _AOr P _A=min (I _{A → B}-RSRP _A, 0);

Wherein, P _AIt is value and power reference; I _{A → B}It is the threshold value that first network equipment, second network equipment that can bear disturbs; RSRP _AIt is the Reference Signal Received Power value of the second network measurement equipment that measures of first network equipment.

Preferable, information determination module 100 value and power reference, and determine power adjustment according to value and power reference;

P _A=I _{A → B}-I _{A_measurement}Or P _A=min (I _{A → B}-I _{A_measurement}, 0);

Preferable, information determination module 100 selects minimum value as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment correspondence, and determines the power adjustment of each second network equipment correspondence according to value and power reference; Or be averaged as the value and power reference that is used for determining power adjustment, and determine the power adjustment of each second network equipment correspondence according to value and power reference from the value and power reference of each second network equipment correspondence of determining.

Preferable, total interference value I that information determination module 100 will measure _mTotal interference power values I that can bear with first network equipment _AcceptIt is poor to do, and determines power adjustment total value according to difference; Adjust total value according to power, determine that each produces the power adjustment of second network equipment that disturbs.

Preferable, information determination module 100 obtains value and power reference with difference divided by producing the second network equipment quantity of disturbing, and determines that according to value and power reference each produces the power adjustment of second network equipment that disturbs; Or determine the weights of each second network equipment, and the weights that difference multiply by each second network equipment are respectively obtained value and power reference, determine that according to value and power reference each produces the power adjustment of second network equipment that disturbs.

Preferable, information determination module 100 is with the power adjustment of value and power reference as second network equipment of corresponding each generation interference; Or from power adjustment set, select power adjustment according to value and power reference; Or adjust the step value set from power according to value and power reference and to select power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

Preferable, 110 cycles of sending module send interference coordination information.

Preferable, information determination module 100 is determined I according to total interference threshold that first network equipment can bear _{A → B}

Wherein, I _{A → B}Be not more than total interference power values that first network equipment can bear.

Preferable, total interference power values that information determination module 100 can bear first network equipment multiply by the weighting parameters of each second network equipment correspondence respectively, obtains the I of the second network equipment correspondence _Ai-＞BOr total interference power values that first network equipment can be born obtains the I of the second network equipment correspondence divided by the quantity of second network equipment _Ai-＞B

Preferable, a kind of mode during sending module 110 is transmitted by air interface, X2 interface, S1 interface and terminal sends interference coordination information to second network equipment.

Preferable, first network equipment of the embodiment of the invention can further include: configuration module 120.

Configuration module is used for after sending interference coordination information, and monitoring need be configured to the interference that up subframe is subjected to, and according to monitoring result subframe is configured, to reduce the interference that configuration back subframe is subjected to.

Preferable, if the interference value that the subframe of monitoring is subjected to is higher than the interference value that first network equipment can bear, configuration module 120 is descending sub frame or the transmitted power of not dispatching or improve dispatched users on this subframe with this sub-frame configuration;

If the interference value that the subframe of monitoring is subjected to is not higher than the interference value that first network equipment can bear, configuration module 120 is a sub-frame of uplink with this sub-frame configuration.

Preferable, configuration module 120 monitorings partly or entirely need be configured to up subframe.

As shown in Figure 4, the embodiment of the invention second network equipment comprises: receiver module 200 and processing module 210.

Receiver module 200 is used to receive the interference coordination information that first network equipment is determined, wherein second network equipment is to be in first network equipment network equipment on every side;

Processing module 210, the interference coordination information that is used for receiving according to receiver module 200 is adjusted the downlink transmission power value or is abandoned the interference coordination information that receiver module 200 is received.

Preferable, processing module 210 is when adjusting the downlink transmission power value, and adjustment produces the downlink transmission power value of the descending sub frame that disturbs to first network equipment or adjusts the downlink transmission power value of whole descending sub frames.

Preferable, processing module 210 is in whole downlink transmission power value, and interference coordination information according to the interference coordination information of receiving, is determined the maximum transmission power threshold value, according to the maximum transmission power threshold value when being the interference threshold value.Adjust the downlink transmission power value.

Preferable, processing module 210 is determined the maximum transmission power threshold value according to following formula:

P _Tx=I _{DL → UL}+ max (pathloss, MCL); Or

P _tx＝I _DL→UL+ACIR _bs-bs+max(pathloss，MCL)；

Wherein, P _TxIt is the maximum transmission power threshold value; I _{DL → UL}It is minimum interference threshold value in the interference threshold value of the threshold value disturbed of second network equipment that first network equipment received can bear or a plurality of disturbed network equipment notice received;

In force, first kind of network equipment (being the network equipment of Fig. 3) also may produce interference.Second kind of network equipment (being the network equipment of Fig. 4) also may be interfered, so the function of first kind of network equipment and second kind of network equipment can be combined in (promptly the module of first kind of network equipment and second kind of network equipment is in an entity) in the entity, select to use the function of first kind of network equipment or the function of second kind of network equipment as required.

As shown in Figure 5, first kind of method of carrying out interference coordination of the embodiment of the invention comprises the following steps:

Step 501, first network equipment are determined interference coordination information.

Step 502, first network equipment send interference coordination information to being in first network side, second network equipment on every side, are used to notify second network equipment to carry out interference coordination according to interference coordination information.

Preferable, before the step 502, first network equipment can be measured the peripheral base station deployment scenario earlier, such as determining effective interference base station number and RSRP separately, and/or with the mutual base station configuration information of peripheral base station, wherein configuration information comprises but is not limited at least a in the following message: transmitting power, resource allocation information.

Wherein, when first network equipment carries out the uplink-downlink configuration of local area again according to the interference effect of business demand or other sub-district or other reason needs, this configuration may bring the inter base station interference problem, as adjacent area subframe n is descending sub frame, when first network equipment configuration subframe n was sub-frame of uplink, the adjacent area can disturb local area to receive data.First network equipment need consider that interference effect limits the configuration of this subframe or the descending power configuration of coordinates interference adjacent area.

Preferable, in the step 502, a kind of mode that first network equipment can pass through in air interface, X2 interface, S1 interface and the terminal forwarding sends interference coordination information to second network equipment.

The terminal pass-through mode can be that first network equipment sends to terminal with interference coordination information, is transmitted to second network equipment by terminal.

Preferable, can further include after the step 502:

Step 503, the monitoring of first network equipment need be configured to the interference that up subframe is subjected to, and according to monitoring result subframe are configured, to reduce the interference that configuration back subframe is subjected to.

Preferable, in the step 503, when first network equipment is configured ascending-descending subframes of cell, if the interference value that the subframe that detects is subjected to is higher than the interference value that first network equipment can bear, and is descending sub frame or the transmitted power of not dispatching or improve dispatched users on this subframe with this sub-frame configuration; If the interference value that the subframe that detects is subjected to is not higher than the interference value that first network equipment can bear, and is sub-frame of uplink with this sub-frame configuration.

In the step 503, first network equipment can be monitored part or all of needs and is configured to up subframe.

Mode one, interference coordination information are the maximum transmission power threshold values.The maximum transmission power threshold value makes interference level in the first network equipment ability to bear scope.The maximum transmission power threshold value can be used to limit the transmitting power of second all descending sub frames of network equipment, also can only be used to limit second network equipment to the influential descending sub frame in other sub-district.

Can to be network equipment determine according to actual conditions the ability to bear of first network equipment, or the equipment configuration of dispatching from the factory, or standard convention etc.

Concrete, in the step 501, first network equipment is according to the facility information of first network equipment and/or the facility information of second network equipment, determines to allow the maximum transmission power threshold value of second network equipment, and with the maximum transmission power threshold value as interference coordination information;

In the enforcement, in the enforcement, the facility information of first network equipment includes but not limited at least a in the following message:

The facility information of second network equipment includes but not limited at least a in the following message:

Path loss values between second network equipment and first network equipment, Reference Signal Received Power value, spectrum allocation may information and resource scheduling information.

The facility information of the facility information of first network equipment and second network equipment can be to measure to obtain, or signaling, or standard convention.

Preferable, first network equipment can be determined the maximum transmission power threshold value according to formula one or formula two.

Preferable, if I _{A → B}It is the interference threshold value of first network equipment, second network equipment that can bear, this value can be the agreement agreement, or the equipment Default Value, or according to actual conditions calculating acquisition (received power value such as useful signal is conciliate the pitch limit value, calculates the interference threshold value that can bear).

Preferable, first network equipment is determined I according to total interference threshold that first network equipment can bear _{A → B}Wherein, I _{A → B}Be not more than total interference power values that first network equipment can bear.

Wherein, first network equipment is determined I according to total interference threshold that first network equipment can bear _{A → B}Mode have a variety ofly, enumerate several below.

(1), first network equipment, total interference power values that first network equipment can be born multiply by the weighting parameters of each second network equipment correspondence respectively, obtains the I of the second network equipment correspondence _Ai-＞B

Such as determining the weighting parameters of each second network equipment correspondence, for example disturb big more weighting parameters big more according to the disturbance regime of second network equipment to first network equipment;

Total interference power values that first network equipment can be born multiply by the weighting parameters of each second network equipment correspondence respectively then, obtains the I of each second network equipment correspondence respectively _Ai-＞BBe the I of each second network equipment correspondence of this mode _Ai-＞BMight be identical also possible different.

(2), first network equipment, total interference power values that first network equipment can be born is divided by the quantity of second network equipment, obtains the I of the second network equipment correspondence _Ai-＞BBe the I of each second network equipment correspondence of this mode _Ai-＞BAll identical.

Preferable, when interference that second network equipment forms is outside first network equipment receives bandwidth, ACIR _Bs-bsBe 0;

When interference that second network equipment forms is outside first network equipment receives bandwidth,, and determine ACIR according to ACLR and ACS according at least a definite ACLR and the ACS in the following manner _Bs-bs

Wherein, the mode of determining ACLR and ACS comprises:

Pass through signaling ACS by high level;

According to self configuration acquisition ACLR.

Concrete, in the step 501, first network equipment is determined I _{A → B}, and with I _{A → B}As interference coordination information;

Wherein, first network equipment is determined I according to total interference threshold that first network equipment can bear _{A → B}Mode have a variety ofly, specifically can not repeat them here referring to mode one.

Wherein, the mode of determining ACLR and ACS comprises:

Rule of thumb value is determined ACLR and/or ACS;

Determine ACLR and/or ACS according to reference value;

Determine ACLR and/or ACS;

By determining ACS by the notice of signaling according to high level;

According to the definite ACLR of self configuration.

Mode three, interference coordination information are value and power reference.For mode three, preferable, being in first network equipment, second network equipment on every side is that first network equipment is produced the network equipment that disturbs.

Be that the network equipment that generation is disturbed to first network equipment is that example describes with second network equipment below.

Concrete, in the step 501, first network equipment is determined power adjustment, and with power adjustment as interference coordination information.

Wherein, first network equipment determines that the mode of power adjustment has a lot, enumerates several below.

(1), first network equipment is determined the value and power reference value according to formula five or formula six, and is determined power adjustment according to value and power reference.

Preferable, first network equipment is preferable, first network equipment selects minimum value as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment correspondence, and determines the power adjustment of each second network equipment correspondence according to value and power reference; Or

First network equipment is averaged as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment correspondence, and determines the power adjustment of each second network equipment, 20 correspondence according to value and power reference.

Preferable, first network equipment can be by a kind of definite power adjustment in the following manner.

Mode A1, first network equipment can be with the power adjustment of value and power reference as second network equipment of corresponding each generation interference.

Mode A2, first network equipment are selected power adjustment according to value and power reference from the power adjustment set.

Preferable, if the interference value that first network equipment can bear is greater than the interference value that measures, then from power adjustment set, select one near value and power reference and be not more than 0 numerical value as power adjustment, if the interference value that first network equipment can bear is not more than the interference value that measures, then from power adjustment set, select one near value and power reference and greater than 0 numerical value as power adjustment.

Specifically can determine the value in the power adjustment set as required.

Mode A3, first network equipment are adjusted the step value set from power according to value and power reference and are selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

Preferable, first network equipment is determined the step value of the scope correspondence that value and power reference is affiliated according to the corresponding relation of step value in predefined value range and the set of power adjustment step value.Accordingly, second network equipment is only adjusted a step sizes at every turn.

Specifically can determine the value in the power adjustment set of steps as required.

(2), first network equipment is determined value and power reference according to formula seven or formula eight, and is determined power adjustment according to value and power reference.

Mode B1, first network equipment can be with the power adjustment of value and power reference as second network equipment of corresponding each generation interference.

Mode B2, first network equipment are selected power adjustment according to value and power reference from the power adjustment set.

Specifically can determine the value in the power adjustment set as required.

Mode B3, first network equipment are adjusted the step value set from power according to value and power reference and are selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

Preferable, first network equipment is determined the step value of the scope correspondence that value and power reference is affiliated according to the corresponding relation of step value in predefined value range and the set of power adjustment step value.

(3), first network equipment total interference value I that will measure _mTotal interference power values I that can bear with first network equipment _AcceptIt is poor to do, and determines power adjustment total value according to difference; Adjust total value according to power, determine that each produces the power adjustment of second network equipment that disturbs.

Preferable, first network equipment can obtain value and power reference divided by producing the second network equipment quantity of disturbing with difference, determines that according to value and power reference each produces the power adjustment of second network equipment that disturbs; Or

First network equipment is determined the weights of each second network equipment, and the weights that difference multiply by each second network equipment are respectively obtained value and power reference, determines that according to value and power reference each produces the power adjustment of second network equipment that disturbs.

Mode C1, first network equipment are with the power adjustment of power adjustment as second network equipment of corresponding each generation interference.

Mode C3, first network equipment are adjusted the step value set from power according to power adjustment and are selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

Preferable, the interference value that first network equipment can bear at first network equipment is during greater than the interference value that measures, adjust from power and to select one to be not more than 0 numerical value the set of steps as power adjustment, when the interference value that can bear at first network equipment is not more than the interference value that measures, from power adjust select the set of steps one greater than 0 numerical value as power adjustment.

Preferable, for mode three, in the step 502, first network equipment can be according to the time of setting, and the cycle sends interference coordination information.The concrete time can be set as required.

In force, second network equipment can have a plurality of, if a plurality of second network equipments are arranged, a kind of interference coordination information of respectively determining each second network equipment of first network equipment in the manner described above, and send to the second corresponding network equipment.

As shown in Figure 6, second kind of method of carrying out interference coordination of the embodiment of the invention comprises the following steps:

Step 601, second network equipment receive the interference coordination information that first network equipment is determined, wherein, second network equipment is to be in first network equipment network equipment on every side.

Step 602, second network equipment are adjusted the downlink transmission power value according to the interference coordination information of receiving.

Preferable, if second network equipment is adjusted the downlink transmission power value according to the interference coordination information received, then second network equipment can be adjusted first network equipment is produced the downlink transmission power value of the descending sub frame that disturbs or adjusts the downlink transmission power value of whole descending sub frames

Preferable, if interference coordination information is the interference threshold value, and second network equipment adjusts the downlink transmission power value according to the interference coordination information received, and then second network equipment is according to the interference coordination information of receiving, determine the maximum transmission power threshold value, according to the maximum transmission power threshold value.Adjust the downlink transmission power value.

Preferable, second network equipment can be determined the downlink transmission power value that needs are adjusted according to formula three or formula four.

Wherein, the mode of determining ACLR and ACS comprises:

Pass through signaling ACS by high level;

According to self configuration acquisition ACLR.

Wherein, Fig. 5 and Fig. 6 can synthesize a flow process, form the new method of carrying out interference coordination, promptly first execution in step 501 and step 502, execution in step 601 and step 602 then; Step 503 does not have inevitable sequential relationship with step 601 and step 602, only need guarantee to get final product after step 502.

Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.

The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. a method of carrying out interference coordination is characterized in that, this method comprises:

First network equipment is determined interference coordination information;

2. the method for claim 1 is characterized in that, described first network equipment determines that interference coordination information comprises:

Described first network equipment is according to the facility information of first network equipment and/or the facility information of second network equipment, determine to allow the maximum transmission power threshold value of second network equipment, and with described maximum transmission power threshold value as interference coordination information;

3. method as claimed in claim 2 is characterized in that, the facility information of described second network equipment comprises at least a in the following message:

Path loss values between second network equipment and first network equipment, Reference Signal Received Power value, spectrum allocation may information and resource scheduling information;

The facility information of described first network equipment comprises at least a in the following message:

4. method as claimed in claim 2 is characterized in that, described first network equipment is determined the maximum transmission power threshold value according to following formula:

P _{Max_tx}=I _{A → B}+ ACIR _Bs-bs+ max (pathliss, MCL); Or

P _{max_tx}＝I _A→B+max(pathloss，MCL)；

5. method as claimed in claim 4 is characterized in that, when interference that described second network equipment forms is in described first network equipment receives bandwidth, and ACIR _Bs-bsBe 0;

When interference that described second network equipment forms is outside described first network equipment receives bandwidth,, and determine ACIR according to ACLR and ACS according at least a definite ACLR and the ACS in the following manner _Bs-bs

Wherein, the mode of determining ACLR and ACS comprises:

Rule of thumb value is determined ACLR and/or ACS;

Determine ACLR and/or ACS according to reference value;

Determine ACLR and/or ACS;

By determining ACS by the notice of signaling according to high level;

According to the definite ACLR of self configuration.

6. method as claimed in claim 5 is characterized in that, when determining a plurality of ACLR, according to frequency allocation situation or scheduling of resource situation, selects an ACLR from a plurality of ACLR;

7. the method for claim 1 is characterized in that, described first network equipment determines that interference coordination information comprises:

Described first network equipment is determined I _{A → B}, and with I _{A → B}As interference coordination information;

8. the method for claim 1 is characterized in that, described first network equipment determines that interference coordination information comprises:

Described first network equipment is determined power adjustment, and with power adjustment as interference coordination information.

9. method as claimed in claim 8 is characterized in that, described first network equipment is determined value and power reference according to following formula, and determines power adjustment according to value and power reference:

P _A=I _{A → B}-RSRP _AOr P _A=min (I _{A → B}-RSRP _A, 0);

10. method as claimed in claim 8 is characterized in that, described first network equipment is determined value and power reference according to following formula, and determines power adjustment according to value and power reference;

11., it is characterized in that described first network equipment determines that power adjustment comprises as claim 9 or 10 described methods:

Described first network equipment selects minimum value as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment correspondence, and determines the power adjustment of each second network equipment correspondence according to value and power reference; Or

Described first network equipment is averaged as the value and power reference that is used for determining power adjustment from the value and power reference of each definite second network equipment correspondence, and determines the power adjustment of each second network equipment correspondence according to value and power reference.

12. method as claimed in claim 7 is characterized in that, described first network equipment determines that power adjustment comprises:

Total interference value I that described first network equipment will measure _mTotal interference power values I that can bear with described first network equipment _AcceptIt is poor to do, and determines power adjustment total value according to difference;

Described first network equipment is adjusted total value according to power, determines that each produces the power adjustment of second network equipment that disturbs.

13. method as claimed in claim 12 is characterized in that, described first network equipment determines that each power adjustment that produces second network equipment that disturbs comprises:

Described first network equipment obtains value and power reference with difference divided by producing the second network equipment quantity of disturbing, and determines that according to value and power reference each produces the power adjustment of second network equipment that disturbs; Or

Described first network equipment is determined the weights of each second network equipment, and the weights that difference multiply by each second network equipment are respectively obtained value and power reference, determine that according to value and power reference each produces the power adjustment of second network equipment that disturbs.

14., it is characterized in that described first network equipment determines that each power adjustment that produces second network equipment that disturbs comprises as claim 9～11,13 arbitrary described methods:

Described first network equipment is with the power adjustment of value and power reference as second network equipment of corresponding each generation interference; Or

Described first network equipment is selected power adjustment according to value and power reference from the power adjustment set; Or

Described first network equipment is adjusted the step value set from power according to value and power reference and is selected power to adjust step value, and the power of selecting is adjusted step value as power adjustment.

15., it is characterized in that described first network equipment sends interference coordination information and comprises as the arbitrary described method of claim 8～13:

The described first network equipment cycle sends interference coordination information.

16., it is characterized in that described first network equipment is determined I according to the following step as claim 4,7,9 and 10 arbitrary described methods _{A → B}:

Described first network equipment is determined I according to total interference threshold that first network equipment can bear _{A → B}

17. method as claimed in claim 16 is characterized in that, described first network equipment is determined I _{A → B}Comprise:

Total interference power values that described first network equipment can bear first network equipment multiply by the weighting parameters of each second network equipment correspondence respectively, obtains the I of the second network equipment correspondence _Ai-＞BOr

Total interference power values that described first network equipment can bear first network equipment obtains the I of the second network equipment correspondence divided by the quantity of second network equipment _Ai-＞B

18., it is characterized in that described first network equipment sends interference coordination information and comprises as the arbitrary described method of claim 1～13:

A kind of mode during described first network equipment is transmitted by air interface, X2 interface, S1 interface and terminal sends interference coordination information to second network equipment.

19. the method for claim 1 is characterized in that, described first network equipment also comprises after sending interference coordination information:

Described first network equipment monitoring need be configured to the interference that up subframe is subjected to, and according to monitoring result subframe is configured, to reduce the interference that configuration back subframe is subjected to.

20. method as claimed in claim 19 is characterized in that, described first network equipment is configured ascending-descending subframes of cell and comprises:

If the interference value that the subframe of monitoring is subjected to is higher than the interference value that first network equipment can bear, and is descending sub frame or the transmitted power of not dispatching or improve dispatched users on this subframe with this sub-frame configuration;

If the interference value that the subframe of monitoring is subjected to is not higher than the interference value that first network equipment can bear, and is sub-frame of uplink with this sub-frame configuration.

21., it is characterized in that described first network equipment monitoring partly or entirely need be configured to up subframe as claim 19 or 20 described methods.

22. a method of carrying out interference coordination is characterized in that, this method comprises:

23. method as claimed in claim 22 is characterized in that, described second network equipment is adjusted the downlink transmission power value and is comprised:

The described second network equipment adjustment produces the downlink transmission power value of the descending sub frame that disturbs to first network equipment or adjusts the downlink transmission power value of whole descending sub frames.

24., it is characterized in that described interference coordination information is the interference threshold value as claim 22 or 23 described methods;

Described second network equipment is adjusted the downlink transmission power value and is comprised:

Described second network equipment is determined the maximum transmission power threshold value according to the interference coordination information of receiving;

Described second network equipment is adjusted the downlink transmission power value according to the maximum transmission power threshold value.

25. method as claimed in claim 24 is characterized in that, described second network equipment is determined the maximum transmission power threshold value according to following formula:

P _Tx=I _{DL → UL}+ max (pathIoss, MCL); Or

P _tx＝I _DL→UL+ACIR _bs-bs+max(pathloss，MCL)；

26. method as claimed in claim 25 is characterized in that, when interference that described second network equipment forms is outside described first network equipment receives bandwidth, and ACIR _Bs-bsBe 0;

When interference that described second network equipment forms is outside described first network equipment receives bandwidth, when interference that described second network equipment forms is outside described first network equipment receives bandwidth, according at least a definite ACLR and the ACS in the following manner, and determine ACIR according to ACLR and ACS _Bs-bs

Wherein, the mode of determining ACLR and ACS comprises:

Pass through signaling ACS by high level;

According to self configuration acquisition ACLR.

27. first network equipment that carries out interference coordination is characterized in that this equipment comprises:

28. equipment as claimed in claim 27 is characterized in that, described information determination module specifically is used for:

According to the facility information of first network equipment and/or the facility information of second network equipment, determine to allow the maximum transmission power threshold value of second network equipment, and with described maximum transmission power threshold value as interference coordination information;

29. equipment as claimed in claim 28 is characterized in that, described information determination module is determined the maximum transmission power threshold value according to following formula:

P _{Max_tx}=I _{A → B}+ ACIR _Bs-bs+ max (pathloss, MCL); Or

P _{max_tx}＝I _A→B+max(pathloss，MCL)；

30. equipment as claimed in claim 27 is characterized in that, described information determination module specifically is used for:

Determine I _{A → B}, and with I _{A → B}As interference coordination information;

31. equipment as claimed in claim 27 is characterized in that, described information determination module specifically is used for:

32. equipment as claimed in claim 31 is characterized in that, described information determination module specifically is used for:

Determine value and power reference according to following formula, and determine power adjustment according to value and power reference;

P _A=I _{A → B}-RSRP _AOr P _A=min (I _{A → B}-RSRP _A, 0);

33. equipment as claimed in claim 31 is characterized in that, described information determination module specifically is used for: value and power reference, and determine power adjustment according to value and power reference;

34., it is characterized in that described information determination module specifically is used for as claim 32 or 33 described equipment:

From the value and power reference of each definite second network equipment correspondence, select the power adjustment of minimum value as each second network equipment correspondence; Or be averaged power adjustment as each second network equipment correspondence from the value and power reference of each second network equipment correspondence of determining.

35. equipment as claimed in claim 31 is characterized in that, described information determination module specifically is used for:

With the total interference value I that measures _mTotal interference power values I that can bear with described first network equipment _AcceptIt is poor to do, and determines power adjustment total value according to difference; Adjust total value according to power, determine that each produces the power adjustment of second network equipment that disturbs.

36. equipment as claimed in claim 35 is characterized in that, described information determination module specifically is used for:

Difference is obtained value and power reference divided by producing the second network equipment quantity of disturbing, determine that according to value and power reference each produces the power adjustment of second network equipment that disturbs; Or

Determine the weights of each second network equipment, and the weights that difference multiply by each second network equipment are respectively obtained value and power reference, determine that according to value and power reference each produces the power adjustment of second network equipment that disturbs.

37., it is characterized in that described information determination module specifically is used for as claim 32～34,36 arbitrary described equipment:

With the power adjustment of value and power reference as second network equipment of corresponding each generation interference; Or

From the power adjustment set, select power adjustment according to value and power reference; Or

Adjust selection power adjustment step value the step value set according to value and power reference from power, and the power of selecting is adjusted step value as power adjustment.

38. as the arbitrary described equipment of claim 31～36, it is characterized in that described sending module specifically is used for: the cycle sends interference coordination information.

39., it is characterized in that described information determination module specifically is used for as claim 29,30,32 or 33 described equipment:

According to total interference threshold that first network equipment can bear, determine I _{A → B}

40. equipment as claimed in claim 38 is characterized in that, described information determination module specifically is used for:

Total interference power values that first network equipment can be born multiply by the weighting parameters of each second network equipment correspondence respectively, obtains the I of the second network equipment correspondence _Ai-＞BOr total interference power values that first network equipment can be born obtains the I of the second network equipment correspondence divided by the quantity of second network equipment _Ai-＞B

41., it is characterized in that described sending module specifically is used for as the arbitrary described equipment of claim 27～36:

Send interference coordination information by a kind of mode in air interface, X2 interface, S1 interface and the terminal forwarding to second network equipment.

42. equipment as claimed in claim 27 is characterized in that, described first network equipment also comprises:

43. equipment as claimed in claim 42 is characterized in that, described configuration module specifically is used for:

44., it is characterized in that described configuration module monitoring partly or entirely need be configured to up subframe as claim 42 or 43 described equipment.

45. second network equipment that carries out interference coordination is characterized in that this equipment comprises:

46. equipment as claimed in claim 45 is characterized in that, described processing module specifically is used for:

When adjusting the downlink transmission power value, adjustment produces the downlink transmission power value of the descending sub frame that disturbs to first network equipment or adjusts the downlink transmission power value of whole descending sub frames.

47., it is characterized in that described processing module specifically is used for as claim 45 or 46 described equipment:

In whole downlink transmission power value, and described interference coordination information according to the interference coordination information of receiving, determines the maximum transmission power threshold value when being the interference threshold value, according to the maximum transmission power threshold value, adjusts the downlink transmission power value.

48. equipment as claimed in claim 47 is characterized in that, described processing module is determined the maximum transmission power threshold value according to following formula:

P _Tx=I _{DL → UL}+ max (pathloss, MCL; Or

P _tx＝I _DL→UL+ACIR _bs-bs+max(pathloss，MCL)；

49. a system that carries out interference coordination is characterized in that, this system comprises: