CN101959195A - Method and device for planning resources - Google Patents
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- CN101959195A CN101959195A CN2009100889344A CN200910088934A CN101959195A CN 101959195 A CN101959195 A CN 101959195A CN 2009100889344 A CN2009100889344 A CN 2009100889344A CN 200910088934 A CN200910088934 A CN 200910088934A CN 101959195 A CN101959195 A CN 101959195A
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Abstract
The invention discloses a method for planning resources. The method comprises the following steps that: a network planning unit determines a resource planning object of a network and a coordinated multi-point (CoMp) transmission resource multiplexing factor K, wherein K is an positive integer more than 1; and the network planning unit divides system resources into K parts, and assigns the K parts to the specified resource planning object respectively, so that the CoMp resource of each base station is mutually orthogonal to the CoMp resource of the adjacent base station. The invention discloses a device for planning resources at the same time. The method and the device can avoid resource conflict or interference, and are flexible and convenient to implement.
Description
Technical field
The present invention relates to collaborative cellular telecommunication art, the MRP method and apparatus in particularly a kind of cellular communication system of employing multipoint cooperative transmission (CoMP, Coordinated Multi-points Transmission) technology.
Background technology
Current cellular communication system adopts OFDM (OFDM, Orthogonal FrequencyDivision Multiplexing) technology to carry out the honeycomb identical networking more, and when the multiplexing factor was low, power system capacity usually was subject to presence of intercell interference.Because the signal quality of edge customer can be subjected to the serious interference of neighbor cell, thereby communication quality is worsened, and then influence the fairness between the user and the throughput of entire system.
Therefore, proposed various interference coordination technique in the prior art, relatively commonly used have partial frequency multiplexing technology and a power distributing technique etc.Wherein, being embodied as of partial frequency multiplexing technology allows edge customer adopt the resource of neighbor cell forbidding, and avoiding interference, but this mode makes each sub-district all need to sacrifice the throughput that a part of available resources guarantee edge customer.In power distributing technique, if edge customer be subjected to neighbor cell than strong jamming, then notify neighbor cell to reduce transmitted power, but this mode make each sub-district need the sacrificial section power resource to guarantee the throughput of edge customer in correspondent frequency resource (being on the employed frequency resource of edge customer).
In addition, a kind of interference coordination technique of three-dimensional has also been proposed now, i.e. the CoMP technology in the technology.The CoMP technology makes that the interference coordination of minizone is more flexible, can realize identical networking truly, and can not reduce the availability of frequency spectrum; Verified at present, this technology can improve the sub-district average throughput preferably and greatly improve 5% user throughput.
Current, in advanced long-term evolution system (LTE-A, Long Term Evolution-Advanced), the realization of CoMP technology mainly comprises following dual mode:
1, combined dispatching
Combined dispatching is the upgrading of the dynamic interference coordination method in the LTE system, the specific implementation of dynamic interference coordination mode is: send the employed running time-frequency resource of edge customer by the base station to adjacent base station, thereby the neighbor cell that makes edge customer avoids using these resources, overweight and when having to use these resources when the neighbor cell load, reduce interference by power control to edge customer.
A kind of combined dispatching mode commonly used is the united beam excipient, promptly utilize intelligent antenna beam excipient or multiple-input and multiple-output (MIMO, Multiple-Input Multiple-Out-put) precoding technique reduces interference to the identical running time-frequency resource of neighbor cell in " the empty branch " mode, for example, make that the smart antenna spatial gain is " zero falls into " value in the edge customer direction, thereby be reduced to zero the interference of edge customer is approximate.Fig. 1 is existing united beam excipient mode schematic diagram.As shown in Figure 1, solid arrow is wherein represented useful signal, and dotted arrow is represented interference signal; Base station (eNB1) is served single user MS1 and MS2 respectively with eNB2 on identical running time-frequency resource, eNB1 utilizes united beam excipient technology to avoid MS2 is caused co-channel interference simultaneously.
2, joint transmission
Joint transmission is meant that many sub-districts provide service to the user simultaneously on same asset, thereby avoids the interference of neighbor cell to edge customer; Wherein, except the user resident sub-district, other Serving cell is called cooperation cell.Owing to send data to the user during multiple sectors at same, so user's data need be shared between the sub-district.During joint transmission, scheduler sends the employed running time-frequency resource of edge customer to relevant base station, unites the service edge user to notify these base stations on this resource, and the precoding vector or the wave beam that can instruct cooperation cell to use.Fig. 2 is existing joint transmission mode schematic diagram.As shown in Figure 2, the solid arrow representative signal useful wherein, the signal that the dotted arrow representative is useful to MS2 to MS1; As can be seen, MS2 has been adopted the joint transmission mode.
In actual applications, also can adopt combined dispatching and joint transmission dual mode simultaneously, so that further improve system spectral efficiency.
In addition, according to the difference of range of application, above-mentioned CoMP technology can be further divided into Inter-eNBCoMP and Intra-eNB CoMP again.Wherein, Intra-eNB CoMP only is applied to the minizone under the same base stations control, owing to do not have direct relation with scheme of the present invention, so be not described.Inter-eNB CoMP is applied to minizone under the different base station control and the minizone under the same base stations control.For ease of subsequent descriptions, below with the sub-district of sub-district, place and other base station adjacent or with the sub-district of other base station each other the user of cooperation cell be referred to as edge customer, the employed resource of edge customer is called the CoMP resource, the sub-district, place is adjacent with the sub-district of other base station and the user of the cell edge of cooperation cell and the user of center of housing estate are not referred to as central user each other with the sub-district of other base station.
At Inter-eNB CoMP, when needs carry out the CoMP MRP, can adopt following two kinds of scheduling modes, i.e. centralized dispatching mode and local scheduling mode.Usually, the CoMP resource of the joint transmission under the centralized dispatching mode is by the scheduling of the Centralized Controller in the network, and the CoMP resource of the joint transmission under the local scheduling mode is by the base station decision of this sub-district; And the combined dispatching acquiescence adopts the local scheduling mode.
Wherein, the specific implementation of centralized dispatching mode comprises: system bandwidth is divided into 2 parts, and each base station general's part wherein is used for centralized scheduler edge customer is carried out centralized dispatching, and another part is used for the base station to be dispatched central user.Fig. 3 is the CoMP MRP mode schematic diagram under the existing centralized dispatching mode.As shown in Figure 3, be example with 3 sub-districts, as can be seen, system bandwidth is divided for CoMP frequency range and central user frequency range two parts, be respectively applied for edge customer and central user are dispatched.
But owing to the frequency range of frequency range that central user is used and edge customer use is all restricted, therefore the flexibility of system's frequency domain dispatching is lower under this mode, thereby causes the availability of frequency spectrum to reduce; In addition, the ratio setting of 2 frequency ranges need conform to the ratio of edge customer number with the central user number, if do not satisfy this requirement, the throughput of system will descend, and edge customer number and central user number change at any time, therefore are difficult to carry out frequency range division accurately.
Though the local scheduling mode does not need resources such as system bandwidth are divided,, therefore may produce resource interference or conflict because dispatch respectively edge customer the base station.Fig. 4 is CoMP resource contention schematic diagram under the existing local scheduling mode.Supposing that edge customer MS1 and MS2 have used identical resource, so for combined dispatching, is co-channel interferences between two users, for joint transmission, then is the conflict of resource selection; If for fear of mutual interference and conflict, then need to dispatch MS1 and MS2 and adopt different resources, but this needs to hold consultation again between the base station, increased extra signaling support.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of MRP method, can avoid resource contention or interference, and implements flexible.
Another object of the present invention is to provide a kind of MRP device, can avoid resource contention or interference, and implement flexible.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of MRP method comprises:
The MRP object and the multipoint cooperative transmission CoMP resource multiplex factor K of network determined in network planning unit, and described K is the positive integer greater than 1;
Described network planning unit is divided into K part with system resource, and distributes to the MRP object of appointment respectively, makes that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
Preferably, described network planning unit determines that the MRP object of network comprises:
In the sub-district that described network planning unit is determined to control each base station, sub-district adjacent or that control with other base station, the sub-district of controlling with other base station is the sub-district of cooperation cell each other, with the sub-district determined as the MRP object.
Preferably, described network planning unit determines that CoMP resource multiplex factor K comprises:
Other number of base stations of each MRP object correspondence is added up in described network planning unit, and the maximum that counts is added one, as described CoMP resource multiplex factor K.
Preferably, describedly system resource be divided into K part comprise:
System bandwidth is divided into K part; Perhaps, system time is divided into K part; Perhaps, system bandwidth and system time are divided into K part on two-dimensional space.
Preferably, describedly system resource be divided into K part comprise:
System resource on average is divided into K part; Perhaps, the edge customer number according to included in each MRP object is divided into K part in proportion with system resource.
A kind of MRP device comprises:
First planning unit is used for determining that the MRP object of network and multipoint cooperative transmit CoMP resource multiplex factor K, and described K is the positive integer greater than 1;
Second planning unit is used for system resource is divided into K part, and distributes to the MRP object of appointment respectively, makes that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
Preferably, described first planning unit comprises:
Determine subelement, be used for the sub-district of determining that each base station is controlled, sub-district adjacent or that control with other base station, the sub-district of controlling with other base station is the sub-district of cooperation cell each other, with the sub-district determined as the MRP object;
Add up subelement, be used to add up other number of base stations of each MRP object correspondence, the maximum that counts is added one, as CoMP resource multiplex factor K.
Preferably, described second planning unit comprises:
Divide subelement, be used for system bandwidth is divided into K part, perhaps, system time is divided into K part, perhaps, system bandwidth and system time are divided into K part on two-dimensional space;
Distribute subelement, be used for the K part system resource that marks off is distributed to respectively the MRP object of appointment, make that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
Preferably, described second planning unit comprises:
Divide subelement, be used for system resource on average is divided into K part, perhaps, the edge customer number according to included in each MRP object is divided into K part in proportion with system resource;
Distribute subelement, be used for the K part system resource that marks off is distributed to respectively the MRP object of appointment, make that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
As seen, adopt technical scheme of the present invention,, like this, compare, both avoided resource contention or interference, need not extra signaling support again, reduced system's time delay, strengthened realizability with the local scheduling mode with the CoMP resource orthogonalization between adjacent base station; Compare with the centralized dispatching mode, the degree of freedom that system bandwidth or system time are divided is higher relatively, has avoided systematic function obviously to be subject to the problem of spectrum division, implements flexible.
Description of drawings
Fig. 1 is existing united beam excipient mode schematic diagram.
Fig. 2 is existing joint transmission mode schematic diagram.
Fig. 3 is the CoMP MRP mode schematic diagram under the existing centralized dispatching mode.
Fig. 4 is CoMP resource contention schematic diagram under the existing local scheduling mode.
Fig. 5 is the flow chart of the inventive method embodiment.
Fig. 6 is the sub-district distribution situation schematic diagram in the base station in the example one of the present invention.
Fig. 7 is the resource allocation conditions schematic diagram of whole network system in the example one of the present invention.
Fig. 8 is the sub-district distribution situation schematic diagram in the base station in the example two of the present invention.
Fig. 9 is the resource allocation conditions schematic diagram of whole network system in the example two of the present invention.
Figure 10 in the example three of the present invention at the dividing mode schematic diagram of system bandwidth.
Figure 11 is the resource allocation conditions schematic diagram of whole network system in the example three of the present invention.
Figure 12 in the example four of the present invention at the dividing mode schematic diagram of system time.
Figure 13 in the example five of the present invention at the dividing mode schematic diagram of system bandwidth and system time.
Figure 14 is the composition structural representation of apparatus of the present invention embodiment.
Embodiment
At problems of the prior art, a kind of brand-new CoMP MRP scheme is proposed among the present invention, promptly according to the orthogonalized principle of CoMP resource between adjacent base station, carry out the CoMP MRP, make that the resource multiplex factor of central user is 1 in the base station, the CoMP resource multiplex factor of edge customer correspondence is greater than 1.Here the orthogonalization of being mentioned can be meant frequency domain resource quadrature (FDM, Frequency DivisionMultiplex) or time-domain resource quadrature (TDM, Time Division Multiplex), certainly, can also be the combination of FDM and TDM dual mode.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Fig. 5 is the flow chart of the inventive method embodiment.As shown in Figure 5, may further comprise the steps:
Step 501: the MRP object and the CoMP resource multiplex factor K of network determined in network planning unit, and K is the positive integer greater than 1.
In this step, in the sub-district that network planning unit (such as the network controller) is at first determined to control each base station, sub-district adjacent or that control with other base station, the sub-district of controlling with other base station is the sub-district of cooperation cell each other, with the sub-district determined as the MRP object; Described " other base station " is called cooperative base station; Then, add up the number of the cooperative base station of each MRP object correspondence, the maximum that counts is added one, as CoMP resource multiplex factor K.
Step 502: network planning unit is divided into K part with system resource, and distributes to the MRP object of appointment respectively, makes that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
In this step, the base station can on average be divided into K part with system resource; Perhaps, can system resource be divided into K part in proportion according to the difference of edge customer number included in each MRP object, specific implementation is not limit yet.For ease of describing, suppose to adopt in the present embodiment average mode of dividing.
Below in conjunction with concrete example, step 501～502 are described further.
Example one
Suppose in a certain beehive network system, 7 sub-districts of each base stations control, as shown in Figure 6, Fig. 6 is the sub-district distribution situation schematic diagram in the base station in the example one of the present invention.Wherein, sub-district 1 (cell1) to cell6 all adjacent with the sub-district of other base station or with the sub-district of other base station cooperation cell each other, supposing the system configuration regulation, each sub-district at most and other 6 sub-districts form adjacent or cooperation cell, then the cooperative base station number average of each sub-district of cell1 in the cell6 is 2, correspondingly, CoMP resource multiplex factor K is 3.
System resource on average is divided into 3 parts, and these 3 parts of resources are distributed to cell1 respectively to cell6, as shown in Figure 7, Fig. 7 is the resource allocation conditions schematic diagram of whole network system in the example one of the present invention." 1 " wherein, " 2 ", " 3 " are represented respectively and are divided the the 1st, the 2nd and the 3rd part of resource that obtains, in conjunction with Fig. 6 as can be seen, cell1 in each base station and cell2 have been assigned to the 1st part of resource, cell3 and cell4 have been assigned to the 2nd part of resource, cell5 and cell6 have been assigned to the 3rd part of resource, are used for the edge customer of these cell schedulings self; CoMP resource between per two adjacent base stations all is quadratures.
Example two
Suppose in a certain beehive network system, 4 sub-districts of each base stations control, as shown in Figure 8, Fig. 8 is the sub-district distribution situation schematic diagram in the base station in the example two of the present invention.Wherein, cell0 to cell3 all adjacent with the sub-district of other base station or with the sub-district of other base station cooperation cell each other; Supposing the system configuration regulation, each sub-district at most and other 6 sub-districts form adjacent or cooperation cell, then cell0 cooperative base station number average of each sub-district in the cell3 is 3, correspondingly, CoMP resource multiplex factor K is 4.
System resource on average is divided into 4 parts, and these 4 parts of resources are distributed to cell0 respectively to cell3, as shown in Figure 9, Fig. 9 is the resource allocation conditions schematic diagram of whole network system in the example two of the present invention." 1 " wherein, " 2 ", " 3 " and " 4 " are represented respectively and are divided the the the 1st, the 2nd, the 3rd and the 4th part of resource that obtains, in conjunction with Fig. 8 as can be seen, cell0 in each base station has been assigned to the 1st part of resource, cell1 has been assigned to the 2nd part of resource, cell2 has been assigned to the 3rd part of resource, and cell3 has been assigned to the 4th part of resource; CoMP resource between per two adjacent base stations all is quadratures.
In addition, in the present embodiment, when system resource is divided, can adopt following different dividing mode, as: system bandwidth is divided into K part; Perhaps, system time is divided into K part; Perhaps, system bandwidth and system time are divided into K part on two-dimensional space; Below abbreviate these three kinds of dividing mode as FDM mode, TDM mode and FDM+TDM mode respectively.
Wherein, the FDM dividing mode is divided into K part with system bandwidth, obtains K part resource, and every part of resource without limits, accounts for the 1/K of system bandwidth on frequency domain on time domain; Every part of resource is continuous on frequency.
The TDM dividing mode is divided into K part with system time, obtains K part resource, and every part of resource without limits, accounts for the 1/K of system time on time domain on frequency domain; Every part of resource is discontinuous in time, with MK (M=1,2 ...) and individual chronomere is the cycle, usually chronomere refers to radio frames or OFDM symbol, k (k=1,2 ... K) the corresponding NMk+M of part resource (k-1) is to NMk+Mk-1 chronomere, N=0,1,2 ....
The FDM+TDM dividing mode is with frequency domain resource and running time-frequency resource, and promptly the two-dimensional space of system bandwidth and system time composition is divided into K part, obtains K part resource, and every part of resource accounts for the 1/K of system resource restricted on the time domain or restricted on frequency domain; Every part of resource is continuous on frequency, is the cycle with MK chronomere in time.
Below by concrete example, above-mentioned three kinds of dividing mode are further specified:
Example three
Suppose in a certain beehive network system that orthohexagonal zone of each base stations control comprises 3 sub-districts in each zone, be respectively Cell1, Cell2 and Cell3, and the hypothesis CoMP resource multiplex factor is 3.
Network planning unit is divided into 3 parts with system bandwidth, and every part that will mark off is distributed to predetermined sub-district respectively, be used to dispatch edge customer, be that the edge customer of each sub-district uses the part in 3 parts that marked off respectively, thereby make the CoMP resource of adjacent base station mutually orthogonal, avoid conflict and disturb.
Figure 10 in the example three of the present invention at the dividing mode schematic diagram of system bandwidth.As shown in figure 10, system bandwidth is divided into 3 frequency ranges, distributes to sub-district 1, sub-district 2 and sub-district 3 respectively, be used to dispatch edge customer according to diagram order from left to right.According to dividing mode shown in Figure 10, can obtain the pairing resource distribution situation of whole network system, as shown in figure 11; MS1 wherein, MS2 and MS3 represent 3 user terminals; In addition, solid arrow is represented useful signal, and dotted arrow is represented interference signal; As can be seen, the CoMP resource between adjacent base station is a quadrature.
Central user is not subjected to divide restriction, can use the frequency resource in the whole system bandwidth.
Example four
Suppose network system still as shown in figure 11, Figure 12 in the example four of the present invention at the dividing mode schematic diagram of system time.As shown in figure 12, be the cycle system time to be divided into 3 parts with 3 radio frames, be expressed as frame #3N/3N+1/3N+2 among the figure, N=0,1,2 ....Cell1 in each base station uses frame #3N, and cell2 uses frame #3N+1, and cell3 uses frame #3N+2.
Central user is not subjected to divide restriction, can be scheduled at any time.
Example five
Suppose network system still as shown in figure 11, Figure 13 in the example five of the present invention at the dividing mode schematic diagram of system bandwidth and system time.As shown in figure 13, be divided into 3 parts with the 3 frames system resource that to be the cycle form system bandwidth and system time, the cell1 in each base station uses the part 1 resource, and cell2 uses the part 2 resource, and cell3 uses the 3rd part resource.
Central user is not subjected to divide restriction, can be at any time or frequency be scheduled.
Need to prove that in actual applications, this mode of dividing simultaneously at system bandwidth and system time can have multiple different implementation, and is shown in Figure 13 only for illustrating, and is not limited to technical scheme of the present invention.
Based on above-mentioned introduction, Figure 14 is the composition structural representation of apparatus of the present invention embodiment.In actual applications, this device can be the network controller, as shown in figure 14, comprising:
Wherein, comprise in first planning unit 11:
Determine subelement 111, be used for the sub-district of determining that each base station is controlled, sub-district adjacent or that control with other base station, the sub-district of controlling with other base station is the sub-district of cooperation cell each other, with the sub-district determined as the MRP object;
Add up subelement 112, be used to add up other number of base stations of each MRP object correspondence, the maximum that counts is added one, as CoMP resource multiplex factor K.
Comprise in second planning unit 12:
Distribute subelement 122, be used for the K part system resource that marks off is distributed to respectively the MRP object of appointment, make that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
The concrete workflow of device embodiment shown in Figure 14 please refer to the respective description among the method embodiment shown in Figure 5, repeats no more herein.
In a word, adopt technical scheme of the present invention,, like this, compare, both avoided resource contention or interference, need not extra signaling support again, reduced system's time delay, strengthened realizability with the local scheduling mode with the CoMP resource orthogonalization between adjacent base station; Compare with the centralized dispatching mode, the degree of freedom that system bandwidth or time divide is higher relatively, has avoided systematic function obviously to be subject to the problem of spectrum division, implements flexible.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a MRP method is characterized in that, this method comprises:
The MRP object and the multipoint cooperative transmission CoMP resource multiplex factor K of network determined in network planning unit, and described K is the positive integer greater than 1;
Described network planning unit is divided into K part with system resource, and distributes to the MRP object of appointment respectively, makes that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
2. method according to claim 1 is characterized in that, described network planning unit determines that the MRP object of network comprises:
In the sub-district that described network planning unit is determined to control each base station, sub-district adjacent or that control with other base station, the sub-district of controlling with other base station is the sub-district of cooperation cell each other, with the sub-district determined as the MRP object.
3. method according to claim 2 is characterized in that, described network planning unit determines that CoMP resource multiplex factor K comprises:
Other number of base stations of each MRP object correspondence is added up in described network planning unit, and the maximum that counts is added one, as described CoMP resource multiplex factor K.
4. method according to claim 1 is characterized in that, describedly system resource is divided into K part comprises:
System bandwidth is divided into K part; Perhaps, system time is divided into K part; Perhaps, system bandwidth and system time are divided into K part on two-dimensional space.
5. method according to claim 1 is characterized in that, describedly system resource is divided into K part comprises:
System resource on average is divided into K part; Perhaps, the edge customer number according to included in each MRP object is divided into K part in proportion with system resource.
6. a MRP device is characterized in that, comprising:
First planning unit is used for determining that the MRP object of network and multipoint cooperative transmit CoMP resource multiplex factor K, and described K is the positive integer greater than 1;
Second planning unit is used for system resource is divided into K part, and distributes to the MRP object of appointment respectively, makes that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
7. device according to claim 6 is characterized in that, described first planning unit comprises:
Determine subelement, be used for the sub-district of determining that each base station is controlled, sub-district adjacent or that control with other base station, the sub-district of controlling with other base station is the sub-district of cooperation cell each other, with the sub-district determined as the MRP object;
Add up subelement, be used to add up other number of base stations of each MRP object correspondence, the maximum that counts is added one, as CoMP resource multiplex factor K.
8. device according to claim 6 is characterized in that, described second planning unit comprises:
Divide subelement, be used for system bandwidth is divided into K part, perhaps, system time is divided into K part, perhaps, system bandwidth and system time are divided into K part on two-dimensional space;
Distribute subelement, be used for the K part system resource that marks off is distributed to respectively the MRP object of appointment, make that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
9. device according to claim 6 is characterized in that, described second planning unit comprises:
Divide subelement, be used for system resource on average is divided into K part, perhaps, the edge customer number according to included in each MRP object is divided into K part in proportion with system resource;
Distribute subelement, be used for the K part system resource that marks off is distributed to respectively the MRP object of appointment, make that the CoMP resource of the CoMP resource of each base station and adjacent base station is mutually orthogonal.
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| US9337973B2 (en) | 2012-09-11 | 2016-05-10 | Industrial Technology Research Institute | Method of cooperative MIMO wireless communication and base station using the same |
| CN103442365A (en) * | 2013-08-27 | 2013-12-11 | 重庆邮电大学 | Frequency reuse method for reducing interference of CoMP system in station |
| CN103442365B (en) * | 2013-08-27 | 2016-06-15 | 重庆邮电大学 | A kind of frequency multiplexing method reducing the interior CoMP system interference in station |
| CN107846266A (en) * | 2016-09-18 | 2018-03-27 | 中兴通讯股份有限公司 | Running time-frequency resource dispatching space division method and apparatus |
| CN107846266B (en) * | 2016-09-18 | 2022-03-04 | 中兴通讯股份有限公司 | Time-frequency resource space division scheduling method and device |
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