CN103024754A - Multi-carrier-based method for interference coordination among micro base stations - Google Patents
Multi-carrier-based method for interference coordination among micro base stations Download PDFInfo
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Abstract
The invention provides a multi-carrier-based method between for interference coordination among micro base stations. The method comprises the steps of receiving carrier configuration status transmitted from adjacent micro base stations by one micro base station, and carrying out carrier configuration of a cell of the micro base station according to a principle that the carrier configuration of a cell is different from that of adjacent micro base stations by the micro base station according to the received carrier configuration status. The method can ensure different carrier configuration between the adjacent micro base stations so as to relieve mutual interference among the micro base stations and improve the performance of users on the border of the cell.
Description
Technical field
The present invention relates to interference coordination technique, particularly a kind of little inter-station interference coordinating method based on multicarrier.
Background technology
Existing studies show that introduced heterogeneous network in advanced (LTE-advanced) system of Long Term Evolution.Heterogeneous network refers to that macrocell lower floor has also disposed Microcell.Such as long-distance radio frequency unit (RRH), femto base station (Pico eNB), Home eNodeB (Home eNB) and relay base station (relay eNB).The introducing of Microcell has caused more cell border areas, thereby causes extra interference.Unbalanced power between macrocell and the Microcell causes particularly serious interference to the UE that is in cell border areas.Typical a kind of deployment is macrocell (macro cell)+home base station cells (femto cell) (home eNB) under the heterogeneous network, i.e. macro base station and Home eNodeB and deposit.Home eNodeB adopts the CSG pattern usually, and the user who only has the CSG authority can access.In the time of within the UE that does not have the CSG authority is in the CSG coverage, can only carry out data communication with macro base station, when macro base station and Home eNodeB use same frequency, can cause severe jamming to this part grand UE, we are referred to as victim UE this part UE.
The solution that a lot of alleviation victim UE disturb has been inquired into by 3gpp forum, and wherein a solution is based on the interference coordination between multicarrier realization macro eNB and home eNB.As shown in Figure 1, suppose to have two carrier wave f1 and f2, macro eNB to can be on any one carrier wave away from the macro UE of home eNB control channel and data message; To macro UE (being victim UE) and home UE near home eNB, control information need to be transmitted at different carrier waves, and data message then can transmit at any carrier wave.
Home eNodeB multi-carrier mode in the existing scheme is determined by OAM and the notice Home eNodeB is configured, and namely pre-sets, and OAM seldom can reconfigure the employed multicarrier of Home eNodeB, and this causes following problem easily:
Because Home eNodeB can anytime anywhere be opened, when home eNB was densely distributed, the interference on the same carrier wave of possibility was larger; Need to coordinate mutual carrier wave configuration, existing algorithm underaction.
For example, OAM has disposed multicarrier for certain Home eNodeB, but femto UE is not in the coverage of Home eNodeB, the femto UE number that perhaps is in the Home eNodeB scope is few, or it is less to take resource, the carrier wave that does not need these quantity, and the access user of adjacent Home eNodeB can not use the resource of these carrier waves simultaneously, thereby caused the waste of resource.
OAM is less for the carrier resource of certain Home eNodeB configuration, but have more femto UE to be in to need to communicate by letter simultaneously in the coverage of Home eNodeB and data volume larger, and the access user number of adjacent Home eNodeB of while seldom, or current use number seldom, and the situation such as the stock number of using is few, at this moment, this residential quarter femto UE can not use the resource of adjacent Home eNodeB, thereby has caused the waste of resource.
In sum, prior art solves when causing the strong jamming problem between the CSG Home eNodeB, reserves for Home eNodeB is fixing some carrier wave is set, and will cause part local resource deficiency or the wasting of resources, can not improve the utilance to multi-carrier resource.
In addition, for the occasion of the application Home eNodeB such as some enterprises, because its Home eNodeB can adopt identical CSG ID, so there is X2 interface between Home eNodeB.Also there is X2 interface between Pico eNB.
In view of interference problem serious under the heterogeneous network, when utilizing multi-transceiver technology to alleviate little base station to the interference of the victim UE of macro base station one side, the carrier wave configuration to victim UE transmission PDCCH that macro base station and home eNB have done should not conflict, thereby minimizes the interference that suffers on the victim UE control channel.
In addition, the strong jamming that suffers each other when dispatching when little base station is intensive is also being inquired into by 3gpp forum.As shown in Figure 2, when home eNB is densely distributed, when being desirably in allocation of carriers, not only the carrier wave that uses of victim UE will from used different of Home eNodeB, and also should adopt different carrier waves to reduce mutual interference between Home eNodeB as far as possible.Equally, when pico cell is densely distributed, also there is similar problem, should adopts with each other different carrier waves to reduce mutual interference as far as possible.
Summary of the invention
The invention provides a kind of disturbance coordination method based on multicarrier, can effectively alleviate the phase mutual interference between little base station, improve the performance of Cell Edge User.
For achieving the above object, the present invention adopts following technical scheme:
A kind of disturbance coordination method based on multicarrier comprises:
Little base station receives the carrier wave configuration state that adjacent little base station sends;
Described little base station according to the principle different with the carrier wave configuration of described adjacent little base station, is carried out the carrier wave configuration of this residential quarter according to the described carrier wave configuration state that receives.
Preferably, when the single carrier configuration was supported in described adjacent little base station, the carrier wave configuration state of described transmission was: the single carrier of the described adjacent current employing in little base station.
Preferably, the mode of adjacent little base station transmission carrier wave configuration state is:
Adopt the mode of multicarrier bit map to carry the single carrier of described current employing; Wherein, each bit of described multicarrier bit map represents a carrier wave, and it is the single carrier of described current employing that bit is set the expression corresponding carriers;
Perhaps,
The Cell Identity CI of the single carrier of described current employing is sent to described little base station.
Preferably, when the multicarrier configuration was supported in described adjacent little base station, the carrier wave configuration state of described transmission was: the basic covering carrier wave of the described adjacent current employing in little base station and auxiliary capacity carrier wave configuration state; Wherein, described auxiliary capacity carrier wave is control information transmission or with the carrier wave of the power delivery control information that reduces not.
Preferably, adjacent little base station sends the mode of described carrier wave configuration state and is:
Adopt the mode of multicarrier bit map to carry described carrier wave configuration state; Wherein, each bit of described multicarrier bit map represents a carrier wave, and it is described basic covering carrier wave that bit is set the expression corresponding carriers, and it is described auxiliary capacity carrier wave that bit is not set the expression corresponding carriers;
Perhaps,
The Cell Identity CI of the basic covering carrier wave of described current employing is sent to described little base station.
Preferably, the carrier wave configuration state of described transmission is: the carrier resource information that the adjacent base station of described adjacent little base station can be used.
Preferably, adjacent little base station sends the mode of described carrier wave configuration state and is:
The carrier resource information that the adjacent base station of adopting the mode of multicarrier bit map to carry described adjacent little base station can be used; Wherein, each bit of described multicarrier bit map represents a carrier wave, and it is the carrier wave that the adjacent base station of described adjacent little base station can be used that bit is set the expression corresponding carriers;
Perhaps, with the adjacent base station of described adjacent little base station can with the identification number of carrier wave in the residential quarter send to described little base station.
Preferably, when described little base station receives the carrier wave configuration state that described adjacent little base station sends, further receive the information that multicarrier interference coordination function that described adjacent little base station sends is activated.
Preferably, receive the information that described carrier wave configuration state and described multicarrier interference coordination function are activated by the X2 interface between little base station.
Preferably, carry out the carrier wave configuration of this residential quarter in described little base station after, the method further comprises:
When the single carrier configuration is supported in described little base station, described little base station sends to described adjacent little base station with the PRB ratio that the UE that carries out Inter-Cell Interference Coordination on the carrier wave that self disposes takies, and adjusts foundation as the carrier wave of described adjacent little base station in the limited situation of carrier resource number; Wherein, described PRB ratio is to carry out the employed PRB number of UE of Inter-Cell Interference Coordination divided by maximum obtainable PRB number on the described carrier wave on the described carrier wave that self disposes;
When the multicarrier configuration is supported in described little base station, described little base station sends to described adjacent little base station with the ratio that the UE that carries out Inter-Cell Interference Coordination on the carrier wave that self disposes takies CCE, adjusts foundation as the carrier wave of described adjacent little base station in the limited situation of carrier resource number; Described CCE ratio is, current all substantially cover the employed CCE number of the UE that carries out Inter-Cell Interference Coordination on the carrier wave divided by described current all substantially cover maximum obtainable CCE number on the carrier wave.
Preferably, the described UE that carries out Inter-Cell Interference Coordination is that cell edge is subject to strongly disturbing UE.
Preferably, carry out the carrier wave configuration of this residential quarter in described little base station after, the method further comprises: described little base station feeds back to described adjacent little base station with the carrier information of this cell configuration.
Preferably, when the single carrier configuration was supported in described little base station, described little base station fed back to described adjacent little base station with the carrier information of this cell configuration and is:
Adopt the mode of multicarrier bit map to carry the carrier information of described cell configuration; Wherein, each bit of described multicarrier bit map represents a carrier wave, and bit is set the expression corresponding carriers and is the single carrier of this cell configuration;
Perhaps, the Cell Identity CI with the single carrier of described cell configuration sends to described adjacent little base station.
Preferably, when the single carrier configuration was supported in described little base station, described little base station fed back to described adjacent little base station with the carrier information of this cell configuration by the carrier information cell.
Preferably, when the multicarrier configuration is supported in described little base station, describedly state little base station and the carrier information of this cell configuration is fed back to described adjacent little base station be:
Adopt the mode of multicarrier bit map to carry the carrier information of described cell configuration; Wherein, each bit of described multicarrier bit map represents a carrier wave, and bit is set the expression corresponding carriers and is the basic covering carrier wave of this cell configuration, and bit is not set the expression corresponding carriers and is the auxiliary capacity carrier wave of this cell configuration; Wherein, described auxiliary capacity carrier wave is control information transmission or with the carrier wave of the power delivery control information that reduces not;
Perhaps, the Cell Identity CI with the basic covering carrier wave of described cell configuration sends to described adjacent little base station.
Preferably, when the multicarrier configuration was supported in described little base station, described little base station fed back to described adjacent little base station with the carrier information of this cell configuration by basic covering carrier information cell.
Preferably, O﹠M system (OAM) is in the mapping of the carrier wave of little base station end configuration consistency, and the carrier wave of mapping is all carrier waves in the system or the carrier wave in the predefined carrier subset; Carrier number in the described carrier subset is set according to actual needs.
Preferably, the Cell Identity CI of described carrier wave is the carrier frequency sign of carrier wave.
As seen from the above technical solution, among the present invention, little base station receives the carrier wave configuration state that adjacent little base station sends; Little base station according to the principle different with the carrier wave configuration of adjacent little base station, is carried out the carrier wave configuration of this residential quarter according to the carrier wave configuration state that receives.By the carrier wave configuration of above-mentioned little base station, guarantee that the carrier wave configuration is different between adjacent little base station, thereby reduce the phase mutual interference between little base station, improve the performance of Cell Edge User.
Description of drawings
Fig. 1 is existing interference coordination schematic diagram one;
Fig. 2 is existing interference coordination schematic diagram two;
Fig. 3 is based on the schematic flow sheet of the disturbance coordination method of multicarrier among the present invention.
Embodiment
For making purpose of the present invention, technological means and advantage clearer, below in conjunction with accompanying drawing the present invention is described in further details.
Basic thought of the present invention is: when interference coordination mechanism starts, require little base station and adjacent little base station between control interface transmit the configuration state of a plurality of carrier waves, thereby when determining himself carrier wave configuration, auxiliary adjacent little base station avoids mutual conflict, reduce disturbance is realized based on the interference coordination between little base station of multicarrier.
Fig. 3 is based on the schematic flow sheet of the disturbance coordination method of multicarrier among the present invention.Method shown in Figure 3 describes as example little base station A is carried out interference coordination, and as shown in Figure 3, the method comprises:
In this step, the carrier wave configuration state that little base station A receives is that adjacent little base station sends by X2 interface.
Wherein, the carrier wave configuration state that adjacent little base station B sends can be defined as different forms as required, and the concrete mode that sends the carrier wave configuration state also can adopt various ways, below is described respectively.
The definition of carrier wave configuration state can have following two kinds:
One, when little base station B supported the single carrier configuration, the configuration state of carrier wave was defined as: the single carrier of the current employing of little base station B; When little base station B supported the multicarrier configuration, the configuration state of carrier wave was defined as: the basic covering carrier wave of the current employing of little base station B and auxiliary capacity carrier wave.Wherein, substantially cover carrier wave and be the carrier wave on the ordinary meaning, auxiliary capacity carrier wave does not namely transmit the control information such as PDCCH or with the carrier wave of the control informations such as power delivery PDCCH that reduce.Under the definition of above-mentioned carrier wave configuration state, after little base station A receives the carrier wave configuration state that adjacent little base station B sends, i.e. the direct carrier case that self takies of clear and definite little base station B.
What two, no matter little base station B supported is single carrier configuration or multicarrier configuration (namely supporting carrier aggregation), and the configuration state of carrier wave all is defined as: the carrier resource information that the adjacent base station of little base station B can be used.Under the definition of this carrier wave configuration state, little base station A can directly determine the carrier resource that self is available after receiving the carrier wave configuration state of adjacent little base station B transmission.
For above-mentioned two kinds of carrier wave configuration states, when carrying out the transmission of carrier wave configuration state, all can send by existing message (for example, load information message or eNB configuration update message or X2 Setup Request/X2 Setup Response message etc.) or the self-defined message of X2 interface.Specifically when carrying the carrier wave configuration state, can be by the mode of multicarrier bit map or the mode of directly carrying the Cell Identity CI of carrier wave.Particularly,
For the first carrier wave configuration state definition, adopt multicarrier bit map mode carry the carrier wave configuration state concrete mode can for:
When little base station B supports the single carrier configuration, each bit of multicarrier bit map represents a carrier wave, it is the single carrier of the current employing of little base station B that bit is set (for example this bit is set to 1) expression corresponding carriers, and it is the current carrier wave that does not adopt in little base station that bit is not set (for example this bit is 0) expression corresponding carriers;
When little base station B supports the multicarrier configuration, each bit of multicarrier bit map represents a carrier wave, it is the basic covering carrier wave that little base station B adopts that bit is set (for example this bit is set to 1) expression corresponding carriers, (for example this bit is 0) expression corresponding carriers PDCCH through-put power that is not set bit reduces or is 0, and namely corresponding carriers is the auxiliary capacity carrier wave that little base station B adopts.
For the first carrier wave configuration state definition, adopt the Cell Identity CI that directly carries carrier wave mode concrete mode can for:
When little base station B supports the single carrier configuration, directly the Cell Identity CI of the single carrier of the current employing of little base station B (be specifically as follows the carrier frequency sign be in the LTE system EARFCN) is sent to little base station A.
When little base station B supports the multicarrier configuration, directly the Cell Identity CI of the basic covering carrier wave of the current employing of little base station B (be specifically as follows the carrier frequency sign be in the LTE system EARFCN) is sent to little base station A.
Define for the second carrier wave configuration state, adopt multicarrier bit map mode carry the carrier wave configuration state concrete mode can for: each bit of multicarrier bit map represents a carrier wave, bit is set (for example this bit is set to 1) expression corresponding carriers PDCCH through-put power not to be reduced, and namely corresponding carriers is the carrier resource that the adjacent base station of little base station B can be used; (for example this bit is 0) expression corresponding carriers PDCCH through-put power that is not set bit reduces or is 0, and namely corresponding carriers is the disabled carrier resource in adjacent base station of little base station B.
For the second carrier wave configuration state definition, adopt the concrete mode of the mode of the Cell Identity CI that directly carries carrier wave to send to little base station A for identification number in the residential quarter of: the carrier wave that the adjacent base station of little base station B can be used (be specifically as follows the carrier frequency sign be in the LTE system EARFCN)
Carry carrier resource information and the disabled carrier resource information that to use described adjacent little base station in the mode of multicarrier bit map in the said method, wherein the carrier wave of indication can be carrier wave whole in the system, also can be a certain carrier subset for a certain purpose specific definitions, the carrier set that uses among a small circle such as some Microcells (such as the home eNB in the enterprise network).Here need to prove, in the specific implementation, need O﹠M system (OAM) in the carrier wave mapping of macro eNB and Home eNB end configuration consistency, thereby so that both sides can be known carrier wave corresponding to each bit among the PCC/SCC configuration pattern information.Carrier wave mapping is specially the bit among PCC/SCC configuration pattern information corresponding to the cell ID of different carrier waves.OAM when configuration, can be according to the bit string of the carrier frequency point ascending order in the existing bandwidth or the corresponding PCC/SCC configuration of descending pattern information from the 1st bit to the N bit.
Simultaneously, when above-mentioned little base station B sends the carrier wave configuration state, can also further in identical message, carry the information that multicarrier interference coordination function is activated that is used to indicate.
The example of a concrete transmission corresponding information is as follows: can increase by two IE in interface message (for example load information message), namely substantially cover carrier wave/auxiliary capacity carrier wave configuration mode information (PCC/SCC configuration pattern info) and substantially cover carrier wave/auxiliary capacity carrier configuration information and do not activate (PCC/SCC configuration information Inactive) two IE.Wherein, substantially cover carrier wave/auxiliary capacity carrier wave configuration mode information cell and carry the configuration information of basic covering carrier wave and auxiliary capacity carrier wave; Basic carrier wave/auxiliary capacity the carrier configuration information that covers does not activate cell and carries the information that multicarrier interference coordination function is activated that is used to indicate.
In this step, according to the carrier wave configuration state that adjacent little base station sends, carry out the carrier wave configuration of this residential quarter, and when carrying out the carrier wave configuration, assurance is different with the carrier wave configuration of adjacent little base station, thereby reduces the phase mutual interference between little base station, improves the performance of Cell Edge User.
The above-mentioned basic procedure that is disturbance coordination method among the present invention.Further, on above-mentioned process base, preferably, can also be as follows 303 and/or step 304, further to adjacent little base station feedback information, the foundation that is used for the further carrier wave configuration in adjacent little base station and adjusts further reduces the interference between little base station.Concrete operations can followingly be carried out:
In this step, need the resource occupation condition notification of Inter-Cell Interference Coordination UE to give adjacent little base station B on the carrier wave of little base station with self configuration, thereby provide foundation for the further carrier wave adjustment of adjacent little base station B.
Particularly, when little base station A supported the single carrier configuration, little base station A sent to adjacent little base station B with the PRB ratio that the UE that carries out Inter-Cell Interference Coordination on the carrier wave that self disposes takies;
When little base station A supported the multicarrier configuration, little base station A sent to adjacent little base station B with the ratio that the UE that carries out Inter-Cell Interference Coordination on the carrier wave that self disposes takies CCE.
By the UE resource occupation situation of above-mentioned transmission, adjacent little base station B can be accordingly, determines the carrier wave that whether can use little base station A to dispose in the limited situation of carrier resource number, to realize that adjacent little base station B and little base station A are to the self adaptation adjustment of carrying.
The ratio of concrete PRB can be utilized the IE in the existing protocol, also can redefine to be the shared PRB number of high interference UE/total PRB number;
Its application scenarios of explained later is as follows:
Case1:home eNB1 supports single carrier, and home eNB2 supports carrier aggregation:
What support in view of home eNB1 is single carrier, and the present invention feeds back the load state of current carrier wave according to PRB;
Concrete processing is as follows: if home eNB1 load is high, home eNB2 can not consider to do any processing; If home eNB1 load is low, the whole single carrier that home eNB2 can use home eNB1 uses; Certainly, even PRB is low, the control channel load may not be certain low, in any case, as long as home eNB2 is controlled in the proper range the load of control channel, all be acceptable to the interference of home eNB1, because the minimizing of control channel load is equivalent to the reduction of PDCCH power, perhaps can be understood as the CCE power that ensures some is 0, utilizes diversity (diversity) to guarantee the reception of the control channel of home eNB1; Another scheme is that the single carrier data channel that home eNB2 only uses home eNB1 uses, like this, on control channel without impact.
Case2: when home eNB1 support carrier aggregation, when home eNB2 also supports carrier aggregation:
In this case, require feedback CCE occupation proportion, be defined as the number of the number of the shared CCE of high interference UE/obtainable all CCE; Here usually control channel takies 3 OFDM symbols, thus with 3 OFDM symbols obtainable CCE number as the benchmark of all CCE numbers.Certain carrier wave that can use adjacent home eNB when certain home eNB transships like this uses; The algorithm patent of carrying before seeing for details;
For case1, if feedback CCE has no idea to understand the PRB state, if the CCE occupation proportion is low, may not be certain the data channel free time, still do not have the effect of alleviating overload for home eNB2 like this.So the suggestion single carrier situation different from multicarrier fed back different PRB or CCE occupation proportion.
Step 304, little base station A feeds back to adjacent little base station B with the carrier information of this cell configuration.
Specifically when little base station A feeds back the carrier information of this cell configuration, can adopt the mode of multicarrier bit map, perhaps also can directly carry the cell ID of carrier wave.Specific implementation can be as follows:
When the mode of employing multicarrier bit map is carried the carrier information of this cell configuration, when little base station A supports the single carrier configuration, each bit of multicarrier bit map represents a carrier wave, bit is set (for example this bit is set to 1) expression corresponding carriers and is the single carrier of this cell configuration, and bit is not set the carrier wave that (for example this bit is 0) expression corresponding carriers does not adopt for this residential quarter; When little base station A supports the multicarrier configuration, each bit of multicarrier bit map represents a carrier wave, bit is set (for example this bit is set to 1) expression corresponding carriers and is the basic covering carrier wave of this cell configuration, and bit is not set (for example this bit is 0) expression corresponding carriers and is the auxiliary capacity carrier wave of this cell configuration.
When adopting the mode of the Cell Identity CI that directly carries carrier wave, when little base station A supports the single carrier configuration, the Cell Identity CI of the single carrier of this cell configuration (be specifically as follows the carrier frequency sign be in the LTE system EARFCN) is sent to adjacent little base station B, specifically can be by the feedback of the carrier information cell in the resource status response message; When little base station A supports the multicarrier configuration, the Cell Identity CI of the basic covering carrier wave of this cell configuration (be specifically as follows the carrier frequency sign be in the LTE system EARFCN) is sent to adjacent little base station B, specifically can be by the basic covering carrier information cell feedback in the resource status response message.
The carrier information feedback of above-mentioned cell configuration can be used for adjacent little base station B carries out the carrier wave configuration according to its channel conditions and load state adjustment.
So far, the complete method flow process among the present invention finishes.Wherein, step 303 and 304 can be carried out in random order.By the way, can transmit the carrier wave configuring condition between little base station, self carrier wave configuration or adjustment of load are carried out according to the carrier wave configuring condition that receives in little base station, thereby can reduce the phase mutual interference between little base station, improve the performance of Cell Edge User.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (18)
1. disturbance coordination method based on multicarrier is characterized in that the method comprises:
Little base station receives the carrier wave configuration state that adjacent little base station sends;
Described little base station according to the principle different with the carrier wave configuration of described adjacent little base station, is carried out the carrier wave configuration of this residential quarter according to the described carrier wave configuration state that receives.
2. method according to claim 1 is characterized in that, when the single carrier configuration was supported in described adjacent little base station, the carrier wave configuration state of described transmission was: the single carrier of the described adjacent current employing in little base station.
3. method according to claim 2 is characterized in that, the mode that adjacent little base station sends the carrier wave configuration state is:
Adopt the mode of multicarrier bit map to carry the single carrier of described current employing; Wherein, each bit of described multicarrier bit map represents a carrier wave, and it is the single carrier of described current employing that bit is set the expression corresponding carriers;
Perhaps,
The Cell Identity CI of the single carrier of described current employing is sent to described little base station.
4. method according to claim 1 is characterized in that, when the multicarrier configuration was supported in described adjacent little base station, the carrier wave configuration state of described transmission was: the basic covering carrier wave of the described adjacent current employing in little base station and auxiliary capacity carrier wave configuration state; Wherein, described auxiliary capacity carrier wave is control information transmission or with the carrier wave of the power delivery control information that reduces not.
5. method according to claim 4 is characterized in that, the mode that adjacent little base station sends described carrier wave configuration state is:
Adopt the mode of multicarrier bit map to carry described carrier wave configuration state; Wherein, each bit of described multicarrier bit map represents a carrier wave, and it is described basic covering carrier wave that bit is set the expression corresponding carriers, and it is described auxiliary capacity carrier wave that bit is not set the expression corresponding carriers;
Perhaps,
The Cell Identity CI of the basic covering carrier wave of described current employing is sent to described little base station.
6. method according to claim 1 is characterized in that, the carrier wave configuration state of described transmission is: the carrier resource information that the adjacent base station of described adjacent little base station can be used.
7. method according to claim 6 is characterized in that, the mode that adjacent little base station sends described carrier wave configuration state is:
The carrier resource information that the adjacent base station of adopting the mode of multicarrier bit map to carry described adjacent little base station can be used; Wherein, each bit of described multicarrier bit map represents a carrier wave, and it is the carrier wave that the adjacent base station of described adjacent little base station can be used that bit is set the expression corresponding carriers;
Perhaps, with the adjacent base station of described adjacent little base station can with the identification number of carrier wave in the residential quarter send to described little base station.
8. arbitrary described method in 7 according to claim 1 is characterized in that, when described little base station receives the carrier wave configuration state that described adjacent little base station sends, further receives the information that multicarrier interference coordination function that described adjacent little base station sends is activated.
9. method according to claim 8 is characterized in that, receives the information that described carrier wave configuration state and described multicarrier interference coordination function are activated by the X2 interface between little base station.
10. method according to claim 1 is characterized in that, carry out the carrier wave configuration of this residential quarter in described little base station after, the method further comprises:
When the single carrier configuration is supported in described little base station, described little base station sends to described adjacent little base station with the PRB ratio that the UE that carries out Inter-Cell Interference Coordination on the carrier wave that self disposes takies, and adjusts foundation as the carrier wave of described adjacent little base station in the limited situation of carrier resource number; Wherein, described PRB ratio is to carry out the employed PRB number of UE of Inter-Cell Interference Coordination divided by maximum obtainable PRB number on the described carrier wave on the described carrier wave that self disposes;
When the multicarrier configuration is supported in described little base station, described little base station sends to described adjacent little base station with the ratio that the UE that carries out Inter-Cell Interference Coordination on the carrier wave that self disposes takies CCE, adjusts foundation as the carrier wave of described adjacent little base station in the limited situation of carrier resource number; Described CCE ratio is, current all substantially cover the employed CCE number of the UE that carries out Inter-Cell Interference Coordination on the carrier wave divided by described current all substantially cover maximum obtainable CCE number on the carrier wave.
11. method according to claim 10 is characterized in that, the described UE that carries out Inter-Cell Interference Coordination is that cell edge is subject to strongly disturbing UE.
12. method according to claim 1 is characterized in that, carry out the carrier wave configuration of this residential quarter in described little base station after, the method further comprises: described little base station feeds back to described adjacent little base station with the carrier information of this cell configuration.
13. method according to claim 12 is characterized in that, when the single carrier configuration was supported in described little base station, described little base station fed back to described adjacent little base station with the carrier information of this cell configuration and is:
Adopt the mode of multicarrier bit map to carry the carrier information of described cell configuration; Wherein, each bit of described multicarrier bit map represents a carrier wave, and bit is set the expression corresponding carriers and is the single carrier of this cell configuration;
Perhaps, the Cell Identity CI with the single carrier of described cell configuration sends to described adjacent little base station.
14. method according to claim 12 is characterized in that, when the single carrier configuration was supported in described little base station, described little base station fed back to described adjacent little base station with the carrier information of this cell configuration by the carrier information cell.
15. method according to claim 12 is characterized in that, when the multicarrier configuration is supported in described little base station, describedly states little base station and the carrier information of this cell configuration is fed back to described adjacent little base station is:
Adopt the mode of multicarrier bit map to carry the carrier information of described cell configuration; Wherein, each bit of described multicarrier bit map represents a carrier wave, and bit is set the expression corresponding carriers and is the basic covering carrier wave of this cell configuration, and bit is not set the expression corresponding carriers and is the auxiliary capacity carrier wave of this cell configuration; Wherein, described auxiliary capacity carrier wave is control information transmission or with the carrier wave of the power delivery control information that reduces not;
Perhaps, the Cell Identity CI with the basic covering carrier wave of described cell configuration sends to described adjacent little base station.
16. method according to claim 12 is characterized in that, when the multicarrier configuration was supported in described little base station, described little base station fed back to described adjacent little base station with the carrier information of this cell configuration by basic covering carrier information cell.
17. method according to claim 1 is characterized in that, O﹠M system (OAM) is in the mapping of the carrier wave of little base station end configuration consistency, and the carrier wave of mapping is all carrier waves in the system or the carrier wave in the predefined carrier subset; Carrier number in the described carrier subset is set according to actual needs.
18. according to claim 3,5,7,13 or 15 described methods, it is characterized in that the Cell Identity CI of described carrier wave is the carrier frequency sign of carrier wave.
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| CN106412966A (en) * | 2016-11-28 | 2017-02-15 | 北京邮电大学 | Method and system for interference coordination between micro base stations |
| CN107333300A (en) * | 2016-04-29 | 2017-11-07 | 大唐移动通信设备有限公司 | The method of adjustment and device of a kind of cell load |
| CN108293209A (en) * | 2016-04-18 | 2018-07-17 | 华为技术有限公司 | Disturbance coordination method, base station and user equipment |
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