CN104284421A - Method and device for interference coordination of cell on multiple time domain resources - Google Patents
Method and device for interference coordination of cell on multiple time domain resources Download PDFInfo
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- CN104284421A CN104284421A CN201310278083.6A CN201310278083A CN104284421A CN 104284421 A CN104284421 A CN 104284421A CN 201310278083 A CN201310278083 A CN 201310278083A CN 104284421 A CN104284421 A CN 104284421A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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Abstract
The invention discloses a method and device for interference coordination of a cell on multiple time domain resources. The cell and at least another cell form a cluster. The method includes the steps of determining whether the cell needs to be closed on at least one time domain resource, determining the proportion of the time domain resource on which the cell is closed in the time domain resources on the situation that the cell needs to be closed on the at least one time domain resource, and determining the time domain resource, on which the cell is closed, in the time domain resources on the basis of the proportion. By means of the method and device for interference coordination, on the situation that multiple cells, such as small cells, are deployed densely, interference coordination can be carried out on the cells in time domains, so that the cells causing great interference on users of other cells are closed on some time domain resources, and interference between the cells is effectively reduced.
Description
Technical field
The present invention relates to the coordinating district interference in time domain, and relate more specifically to a kind of method and apparatus carrying out interference coordination in multiple time-domain resource Shang Dui community.
Background technology
In the mobile communication network, multiple macrocell (macro base station) is disposed to provide service to mobile subscriber.But, in the region that the user in such as gymnasium and shopping center and so on concentrates, only rely on macrocell that enough network capacity often can not be provided to provide good service for these users.For this reason, except macrocell, multiple small cell (small base station) can also be disposed thick and fast (namely in this region, the community that coverage is less compared with macrocell), such as small-cell, Microcell, picocell etc., and provide service by macrocell and these small cell to user.
In such heterogeneous network, there is two kinds of presence of intercell interference, the interference namely between macrocell and small cell and the interference between small cell.In order to reduce the interference between macro base station and small cell, in third generation partner program (3GPP) technical specification Rel.10/Rel.11, introducing and strengthening Inter-Cell Interference Coordination (eICIC).By eICIC, Inter-Cell Interference Coordination can be carried out in the time domain, that is, make macrocell in some subframe, send almost blanking subframe (Almost Blank Subframe, ABS), to reduce macrocell, the co-channel of small cell is disturbed.But, for the interference between small cell, the concrete grammar reducing interference is not proposed at present.
Therefore, the method and apparatus that can subtract the interference between small cell in a kind of scene deploying multiple small cell is needed.
Summary of the invention
Consider above problem and propose the present invention.An object of the present invention is to provide a kind of method and apparatus carrying out interference coordination in multiple time-domain resource Shang Dui community, it is when disposing multiple community thick and fast, significantly can reduce the interference between community, thus improve the performance of wireless communication system, here, described community can be typically small cell, such as small-cell, Microcell, picocell etc., but also can be the community of other types, such as macrocell.
According to an aspect of the present invention, provide a kind of method of carrying out interference coordination in multiple time-domain resource Shang Dui community, this community and at least one other community form cluster, and described method comprises: determine that described community is closed the need of at least one time-domain resource; Need in pent situation, to determine that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource at least one time-domain resource in described community; And based on described ratio, determine the pent time-domain resource in community described in described multiple time-domain resource.
According to a further aspect in the invention, provide a kind of equipment carrying out interference coordination in multiple time-domain resource Shang Dui community, this community and at least one other community form cluster, described equipment comprises: close determining device, be configured to determine that described community is closed the need of at least one time-domain resource; Close ratio-dependent device, be configured to need in pent situation, to determine that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource at least one time-domain resource in described community; And " shut " mode" determining device, be configured to based on described ratio, determine the pent time-domain resource in community described in described multiple time-domain resource.
Utilize the disturbance coordination method according to the above-mentioned aspect of the present invention and interference coordination equipment, when deploying multiple small cell thick and fast, interference coordination can be carried out in the time domain to these small cell, make in some time-domain resource, close the small cell of the user of other small cell being caused to larger interference, thus effectively subtract the interference between small cell.
Accompanying drawing explanation
Embodiments of the present invention is described in detail in conjunction with the drawings, and above and other objects of the present invention, feature, advantage will become apparent, wherein:
Figure 1A and Figure 1B schematically illustrates the application scenarios of embodiments of the invention.
Fig. 2 illustrates the flow chart carrying out the method for interference coordination in multiple time-domain resource Shang Dui community according to the embodiment of the present invention.
Fig. 3 A is the first exemplary approach that the " shut " mode" determining small cell is shown.
Fig. 3 B is the second exemplary approach that the " shut " mode" determining small cell is shown.
Fig. 3 C is the third exemplary approach that the " shut " mode" determining small cell is shown.
Fig. 4 schematically illustrates the first specific implementation of over multiple subframes community being carried out to the method for interference coordination according to the embodiment of the present invention.
Fig. 5 schematically illustrates the second specific implementation of over multiple subframes community being carried out to the method for interference coordination according to the embodiment of the present invention.
Fig. 6 illustrates the block diagram carrying out the equipment of interference coordination in multiple time-domain resource Shang Dui community according to the embodiment of the present invention.
Embodiment
The disturbance coordination method for community according to the embodiment of the present invention and interference coordination equipment are described below with reference to accompanying drawings.In the accompanying drawings, identical reference number represents identical element from start to finish.Be to be understood that: the embodiments described herein is only illustrative, and should not be interpreted as limiting the scope of the invention.
First, the exemplary application scene of the embodiment of the present invention is described with reference to Figure 1A and Figure 1B.
Figure 1A shows the first exemplary application scene, and wherein macro base station forms macrocell, deploys three small base stations (such as femto base station), thus form small cell (such as picocell) 1-3 respectively in macrocell.Macrocell and small cell can use different frequencies to communicate with respective user, and each small cell can use identical frequency and respective telex network.Can interference coordination equipment be set in macro base station, to carry out interference coordination to each small cell.
Figure 1B shows the second exemplary application scene.In this scenario, macro base station forms macrocell, and formed the base station of centralized Radio Access Network (C-RAN) framework by control unit and three the long distance wireless heads (RRH) being connected to this control unit, each RRH can form a small cell.Equally, macrocell and small cell can use different frequencies to communicate with respective user, and each small cell can use identical frequency and respective telex network.In addition, the BBU pond comprising multiple Base Band Unit (BBU) can be set in a control unit, wherein a BBU be set for each small cell, interference coordination equipment can be served as by the BBU for each small cell interference coordination is carried out to this small cell.Will be appreciated that, although only illustrate 3 small cell in Figure 1A and Figure 1B, the quantity of small cell is not limited to 3, but can be any right quantity determined according to actual needs.
Below, with reference to Fig. 2, the method for carrying out interference coordination in multiple time-domain resource Shang Dui community according to the embodiment of the present invention is described.
In an embodiment of the present invention, described community can be small cell, such as small-cell (small cell), Microcell (micro cell), picocell (pico cell) etc., and use small-cell to be described as the example of described community hereinafter.In other embodiments, described community also can be the community of the other types except small-cell, the small cell of such as other types or macrocell etc.As shown in figures ia or ib, described small-cell can be deployed in certain region together with at least one other small-cell, thus forms cluster (or small-cell group).In this case, above-mentioned disturbance coordination method can be performed to each small-cell.Hereinafter, for simplicity, describe embodiments of the invention based on the scene shown in Figure 1A, wherein, use small-cell 1 as the example of above-mentioned small-cell, it can form cluster with small-cell 2 and 3.Will be appreciated that, the following description carried out for small-cell 1 is also applicable to other small-cells in cluster.In addition, in an embodiment of the present invention, described time-domain resource can be subframe, or can be the time-domain resource that can be used as the other types of the elementary cell of interference coordination, such as frame etc.For convenience of description, use subframe as the example of described time-domain resource hereinafter.
With reference to Fig. 2, in step s 201, determine that small-cell 1 is closed the need of at least one subframe.
As mentioned above, when deploying multiple small-cell, in order to reduce the interference between each small-cell, in the time domain Inter-Cell Interference Coordination is performed to each small-cell, that is, time-domain resource optionally closes some small-cell, to reduce the interference that other small-cells are subject to.For this reason, determine which small-cell needs to be closed.In other words, for each small-cell in cluster, can determine that it is closed the need of at least one subframe.Here, whether can have victim cell according to small-cell 1 to carry out this and determine.Described victim cell refers in cluster disturbs larger small-cell by small-cell 1.When there is victim cell, in order to reduce the interference that 1 pair, small-cell victim cell produces, small-cell 1 can be closed, and when there is not victim cell, the interference caused other small-cells due to small-cell 1 is little, therefore can not close small-cell 1.
Various ways can be used to determine whether small-cell 1 has victim cell.In first kind of way, whether predeterminated level can be exceeded according to the interference of the user of other small-cells (such as small-cell 2 and 3) in the cluster of 1 pair, small-cell, determine whether small-cell 1 has victim cell, thus determine that small-cell 1 is closed the need of at least one subframe.Such as, the Reference Signal Received Power (RSRP) of its Serving cell (i.e. small-cell 2) and the RSRP of small-cell 1 can be measured by the user of small-cell 2 (such as edge customer, i.e. subscriber equipment (UE)).Then, the difference between these two RSRP can be calculated, and determine whether described difference is greater than predetermined threshold, whether exceed predeterminated level with the interference of the user determining 1 pair of small-cell 2, small-cell.Described threshold value can need according to design and/or the actual conditions of mobile communications network are suitably arranged, and typically can be set to 6dB.If described difference is less than this threshold value, then can think that 1 pair, small-cell small-cell 2 tool disturbs, namely the interference of the user of 1 pair of small-cell 2, small-cell has exceeded predeterminated level, therefore can determine that small-cell 2 is victim cell of small-cell 1.Otherwise if described difference is greater than this threshold value, this illustrates that the interference of the user of 1 pair of small-cell 2, small-cell does not exceed predeterminated level, and therefore small-cell 2 is not the victim cell of small-cell 1.Equally, the RSRP of its Serving cell (i.e. small-cell 3) and the RSRP of small-cell 1 can be measured by the user of small-cell 3, and determine that whether small-cell 3 is the victim cell of small-cell 1 in the manner described above.Will be appreciated that, although use RSRP to determine the victim cell of small-cell 1 hereinbefore, also the victim cell that other parameters (such as Reference Signal Received Quality RSRQ, Signal to Interference plus Noise Ratio SINR etc.) determine small-cell 1 in a similar fashion can be passed through.
In the second way, whether can be less than predetermined threshold according to the distance in small-cell 1 and cluster between other small-cells, determine whether small-cell 1 has victim cell.Such as, if the distance between the base station of the base station of management small-cell 1 and management small-cell 2 is less than predetermined threshold, this illustrates this two small-cell close proximity, larger interference may be caused to small-cell 2 in small-cell 1, therefore small-cell 2 can be regarded as the victim cell of small-cell 1, small-cell 1 is also the victim cell of small-cell 2 simultaneously.Otherwise, if the distance between the base station of the base station of management small-cell 1 and management small-cell 2 is greater than described threshold value, this illustrates that these two small-cells are apart from each other, larger interference may can not be caused to small-cell 2 in small-cell 1, therefore small-cell 2 can be regarded as is not the victim cell of small-cell 1, and small-cell 1 neither the victim cell of small-cell 2 simultaneously.Above-mentioned determination operation can be performed similarly, to determine that whether it is the victim cell of small-cell 1 for other small-cells in cluster.Described threshold value can need according to design and/or the actual conditions of mobile communications network are suitably arranged.Alternatively, path loss can be used to replace distance, that is, whether can be less than predetermined threshold according to the path loss in small-cell 1 and cluster between other small-cells, determine whether small-cell 1 has victim cell.Certainly, except path loss, other parameters can also be used to determine whether small-cell 1 has victim cell.
In addition, interference pond can be set up to each small-cell in cluster, for recording victim cell and the interference source community of this small-cell.This interference pond can be implemented the file of any appropriate format, such as form etc.Such as, if the victim cell of small-cell 1 is small-cell 2 and small-cell 3, then can record the information representing small-cell 2 and small-cell 3 in the interference pond of small-cell 1, the such as ID of small-cell 2 and small-cell 3.In addition, because each small-cell in cluster can perform the disturbance coordination method according to the embodiment of the present invention, thus perform the determination operation of above-mentioned victim cell, therefore, by the determination operation of other small-cells, can know that whether small-cell 1 is the victim cell of other small-cells, correspondingly, can also record in the interference pond of small-cell 1 makes small-cell 1 become the information of the small-cell of victim cell, i.e. the information of the interference source community of small-cell 1.
Continue with reference to Fig. 2, in step S202, to need at least one subframe in pent situation in small-cell 1, (that is, the closedown ratio of small-cell 1, hereinafter referred to as r to determine the pent subframe in small-cell 1 to account for the ratio of described multiple subframe
cell1).
Particularly, closedown ratio r can be determined according to the traffic load of small-cell 1
cell1.Small-cell 1 average resource within a predetermined period of time (such as time-domain resource, frequency domain resource or power resource) utilization rate can be used (hereinafter referred to as RU
avg-cell1) indicate the traffic load of small-cell 1, wherein, described predetermined amount of time can suitably set as required.
In one implementation, can only according to the RU of small-cell 1
avg-cell1determine closedown ratio.This is based on following understanding: if RU
avg-cell1height, illustrates that the traffic load of small-cell 1 is high, therefore should avoid in too much subframe, closing small-cell 1 to alleviate the impact on its performance; Otherwise, if RU
avg-cell1low, this illustrates that small-cell 1 traffic load is low, therefore can close small-cell 1 and its performance of not appreciable impact in more subframe.Particularly, the pent subframe in following formula (1) calculating small-cell 1 such as can be utilized to account for the maximum ratio r of described multiple subframe
max-cell1:
r
max-cell1=1-RU
avg-cell1 （1）
Then, can by the closedown ratio r of small-cell 1
cell1be set to equal described maximum ratio r
max-cell1, than described maximum ratio r
max-cell1smaller value or between 0 and described maximum ratio r
max-cell1between any value.Will be appreciated that, above formula (1) is just exemplary, and other formula based on average resource utilization rate also can be used to calculate described maximum ratio r
max-cell1, then determine described closedown ratio r
cell1.Such as, according to the actual conditions of system, following formula (2) or (3) at least can also be used to calculate described maximum ratio r
max-cell1.
r
max-cell1=1-1.5*RU
avg-cell1 （2）
In another kind of implementation, can according to small-cell 1 average resource utilization rate (RU within a predetermined period of time
avg-cell1) with cluster in the average resource utilization rate (RU of part or all of small-cell in this predetermined amount of time
avg-cluster) relative size determine the closedown ratio of small-cell 1.Here, the part small-cell in cluster can be mutually disturb with small-cell 1 small-cell, with the small-cell of small-cell 1 close together (such as distance is less than certain threshold value) or a part of small-cell of selecting from the whole small-cells cluster according to any other standard.This implementation is based on following understanding: if the average resource utilization rate of small-cell 1 is equal to or higher than the average resource utilization rate of the part or all of small-cell in cluster, this illustrates that the traffic load of small-cell 1 has been equal to or higher than the average traffic loading of the part or all of small-cell of cluster, therefore can not close small-cell 1 to avoid affecting its performance; Otherwise, if the average resource utilization rate of small-cell 1 is lower than the average resource utilization rate of the part or all of small-cell in cluster, this illustrates that the traffic load of small-cell 1 is lower than the average traffic loading of the part or all of small-cell of cluster, therefore can close small-cell 1 to reduce the interference of this small-cell to other small-cells in the subframe of right quantity.Particularly, the pent subframe in following formula (4) calculating small-cell 1 such as can be utilized to account for the maximum ratio r of described multiple subframe
max-cell1:
r
max-cell1=1-RU
avg-cell1/RU
avg-cluster （4）
Then, can by the closedown ratio r of small-cell 1
cell1be set to equal described maximum ratio r
max-cell1, than described maximum ratio r
max-cell1smaller value or between 0 and described maximum ratio r
max-cell1between any value, wherein, as the r calculated according to formula (4)
max-cell1during for negative or 0, by closedown ratio r
cell1be set to 0, namely do not close small-cell 1.Will be appreciated that, above formula (4) is just exemplary, and other formula based on the relative size of the average resource utilization rate of described part or all of small-cell in this predetermined amount of time in small-cell 1 average resource utilization rate within a predetermined period of time and cluster also can be used to calculate described maximum ratio r
max-cell1, then determine described closedown ratio r
cell1.Such as, according to the actual conditions of system, following formula (5) or (6) at least can also be used to calculate described maximum ratio r
max-cell1.
r
max-cell1=1-1.5*RU
avg-cell1/RU
avg-cluster （5）
Alternatively, except traffic load, the closedown ratio r of small-cell 1 can also be determined according to small-cell 1 average user quantity within a predetermined period of time
cell1.Particularly, can according to small-cell 1 average user quantity within a predetermined period of time (hereinafter referred to as N
avg-cell1) and the part or all of small-cell of the described cluster average user quantity in this predetermined amount of time (hereinafter referred to as N
avg-cluster) between relative size determine closedown ratio r
cell1.Equally, the part small-cell in cluster described here can be mutually disturb with small-cell 1 small-cell, with the small-cell of small-cell close together or a part of small-cell of selecting from whole small-cell according to any other standard.This replacement implementation is based on following understanding: if the average user quantity of small-cell 1 is equal to or greater than the average user quantity of the part or all of small-cell in cluster, this illustrates that small-cell 1 needs the user of service more, therefore can not close small-cell 1 to avoid affecting its service ability; Otherwise, if the average user quantity of small-cell 1 is less than the average user quantity of the part or all of small-cell in cluster, this illustrates that small-cell 1 needs the user of service less, therefore can close small-cell 1 to reduce the interference of this small-cell to other small-cells in the subframe of right quantity.Particularly, can calculate by following formula (7) the maximum ratio r that the pent subframe in small-cell 1 accounts for described multiple subframe
max-cell1:
r
max-cell1=1-N
avg-cell1/N
avg-cluster （7）
Then, can by the closedown ratio r of small-cell 1
cell1be set to equal described maximum ratio r
max-cell1, than described maximum ratio r
max-cell1smaller value or between 0 and described maximum ratio r
max-cell1between any value, wherein, as the r calculated according to formula (7)
max-cell1during for negative or 0, by closedown ratio r
cell1be set to 0, namely do not close small-cell 1.Equally, above formula (7) is just exemplary, and other formula based on the relative size of the average user quantity of all small cell in this predetermined amount of time of small cell 1 average user quantity within a predetermined period of time and described cluster also can be used to calculate described maximum ratio r
max-cell1, then determine described closedown ratio r
cell1.
It should be noted that may appear at step S201 determines that small-cell 1 needs to close at least one subframe, and the closedown ratio passing through the small-cell 1 that above formula (4) to one of (7) is determined is 0(r
max-cell1be 0 or negative value) situation, in this case, as mentioned above, small-cell 1 can not be closed.In addition, here, it should be noted that in certain subframe, close small-cell 1 can be close small-cell 1 completely in this subframe, also can be that small-cell 1 sends almost blanking subframe (ABS) and replaces sending subframe normally in this subframe.
Continue with reference to Fig. 2, in step S203, based on the closedown ratio of the small-cell 1 determined in step S202, determine the pent subframe in small-cell 1 in described multiple subframe, that is, determine in which subframe in described multiple subframe, small-cell 1 is closed (that is, the " shut " mode" of small-cell 1).
The " shut " mode" of small-cell 1 can be determined with various ways.In a kind of mode, can select in described multiple subframe with the subframe of described closedown ratio corresponding number as the pent subframe in described small cell, make in the residue subframe in described multiple subframe, the small-cell of disturbing the small-cell of small-cell 1 in described cluster and be subject to disturbing this small-cell 1 is closed, that is, make the transmission subframe of small-cell 1 orthogonal with the transmission subframe being subject to the small-cell that this small-cell 1 is disturbed with the small-cell of interference small-cell 1.The small-cell of disturbing the small-cell of small-cell 1 in described cluster and being subject to the interference of this small-cell 1 can be determined by the interference pond of consulting small-cell 1.Fig. 3 A-B shows the example of the " shut " mode" determining small-cell 1 by this way.As shown in Figure 3A, suppose existence 10 subframes, the interference pond of small-cell 1 comprises small-cell 2 and 3, and its closedown ratio is 0.6, therefore has 4 to send subframe, the interference pond of small-cell 2 comprises small-cell 1, its closedown ratio is 0.6, and therefore have 4 to send subframe, the interference pond of small-cell 3 comprises small-cell 1, its closedown ratio is 0.4, therefore has 6 to send subframe.Suppose that the " shut " mode" of small-cell 2 and 3 pre-determines, as shown in Figure 3A.When determining the sending mode of small-cell 1,4 of small-cell 1 can be selected in 10 subframes to send subframe, making to send in subframe at these 4, small-cell 2 and 3 is all pent state, that is, the transmission subframe of small-cell 1 and the transmission subframe of small-cell 2 and 3 orthogonal, as shown in Figure 3A.Like this, small-cell 1 can not produce to small-cell 2 and small-cell 3 interference that interference also can not be subject to them.It should be noted that when determining the transmission subframe of each small-cell, continuous print subframe can be selected as transmission subframe, as shown in Figure 3A, the subframe of disperseing also can be selected as described transmission subframe, as shown in Figure 3 B.
In some cases, the small-cell of small-cell 1, interference small-cell 1 and the closedown ratio of small-cell that is subject to the interference of this small-cell 1 may make the transmission subframe of small-cell 1 and disturb the small-cell of small-cell 1 and be subject to the transmission subframe of the small-cell that small-cell 1 is disturbed cannot be completely orthogonal.In these cases, can select in described multiple subframe and the closedown subframe of the subframe of described closedown ratio corresponding number as small-cell 1, make in residue subframe (namely, the transmission subframe of small-cell 1) disturb the small-cell of small-cell 1 in upper pent, described cluster and be subject to the small-cell of disturbing small-cell 1 (namely, the small-cell of recording in the interference pond of small-cell 1) quantity maximum, in other words, can select in described multiple subframe from the transmission subframe of the minimum subframe of the interference of other small-cells as small-cell 1.
Below in conjunction with the example shown in Fig. 3 C, this method determining the " shut " mode" of small-cell 1 is described.In the example of Fig. 3 C, suppose there are 10 subframes, the closedown ratio of small-cell 1 is 0.5, therefore has 5 to send subframe, and its interference pond comprises 4 small-cell A-D, and the " shut " mode" of small-cell A-D and closedown ratio are determined, as shown in Figure 3 C.When determining the transmission subframe of small-cell 1, first, the quantity of pent small-cell in each subframe in subframe 1-10 (community in the interference pond of small-cell 1) can be determined.As shown in Figure 3, on subframe 1-10, pent small-cell quantity is respectively 0,0,2,2,1,1,1,3,4 and 4.Then, according to described quantity to each sub-frame allocation priority, wherein, the subframe priority that pent small-cell quantity is maximum is the highest, and along with the minimizing of pent small-cell quantity, the priority of subframe reduces.Next, according to the priority order from high to low (that is, the order of pent small-cell quantity from many to few) of subframe, from subframe 1-10, select the subframe of the quantity equal with the transmission sub-frame number of small-cell 1, as the transmission subframe of small-cell 1.In the example shown in Fig. 3 C, in the manner described above, sequentially can select subframe 9 and 10, subframe 8, subframe 3 and 4, as the transmission subframe of small-cell 1, as shown in Fig. 3 C bottom.By selecting the transmission subframe of small-cell 1 like this, the community of carrying out in each transmission subframe in the interference pond of the small-cell 1 sent can be made the least possible, avoid thus causing larger interference to the victim cell of small-cell 1, avoid small-cell 1 to be subject to the larger interference of other small-cells simultaneously.
After the " shut " mode" determining small-cell 1, this " shut " mode" can be informed to small-cell 1, make it carry out the transmission of signal according to this pattern.Various ways can be adopted to carry out this notice.Such as, the " shut " mode" (i.e. on off state) of the subframe of every 40 Transmission Time Intervals of adjacent small-cell can be notified by the bitmap (bitmap) of 40 bits.Similarly, by performing the above-mentioned disturbance coordination method according to the embodiment of the present invention for each small-cell of other in cluster, and determined " shut " mode" is informed to corresponding small-cell, each small-cell can at the enterprising Serial Communication of the subframe of non-ABS.The interference coordination result obtained so thus is reasonably configured with the transmission subframe of each small-cell, therefore, it is possible to reduce the interference between each small-cell.In addition, owing to considering traffic load and/or the number of users of each small-cell when carrying out interference coordination, the performance of therefore carrying out the small-cell communicated according to interference coordination result can not be subject to appreciable impact.
To after such as above-mentioned interference coordination has been carried out in small-cell 1, can also dispatch the user of this small-cell 1 further, to determine to distribute to each user sending subframe and the MCS grade selecting this user, user can be communicated in distributed transmission subframe with selected MCS grade.For this reason, need to notify that user measures the channel status between this user to its Serving cell and feeds back corresponding channel condition information (CSI) to its Serving cell.There is multiple indicating user and measure channel status and the mode feeding back CSI, provide two kinds of exemplary approach below.
In the first exemplary approach, user's (such as edge customer) of small-cell 1 can be made to carry out coordinate multipoint (Comp) CSI feedback.Particularly, can to the user notification measurement configuration information of small-cell 1, this measurement configuration information indicates two kinds of interferometry resources (IMR), make this user on the resource location that the first IMR is corresponding, measure channel status when disturbing the strongest small-cell to close to small-cell 1 between this user and its Serving cell (small-cell 1), and the CSI that feedback is corresponding, then on the resource location that the second IMR is corresponding, measure the channel status when disturbing the strongest small-cell to open to small-cell 1 between this user and small-cell 1, and the CSI that feedback is corresponding.Then, above-mentioned scheduling can be carried out based on these two kinds of CSI to user.Alternatively, can a greater variety of to the user notification of small-cell 1 (such as 3 kinds) IMR, make this user on the resource location that these IMR are corresponding, measure the CSI corresponding from different small-cell closed conditions respectively, then feed back these CSI.
In the second exemplary approach, the user of small-cell 1 (such as edge customer) can be made to measure in limited subframe and feed back CSI.Particularly, can to the user notification measurement configuration information of small-cell 1, this measurement configuration information indicates described user in the subframe subset of predetermined quantity, measure the channel status between this user to small-cell 1 respectively and feed back corresponding CSI.Described subframe subset refers to the set of at least one subframe comprised in described multiple subframe.Here, described predetermined quantity can be 2, user is made in two subframe subsets, to measure two kinds of CSI respectively, such as corresponding with the situation disturbing the strongest small-cell to close to small-cell 1 CSI and the CSI corresponding with the situation disturbing the strongest small-cell not close to small-cell 1, and feed back this two kinds of CSI.This exemplary approach can use in the scene of such as carrier aggregation and so on.Such as, when the secondary Serving cell (Scell) of user is served as in small-cell 1, and when another community (macrocell such as shown in Figure 1A) serves as main Serving cell (Pcell) of user, can to described measurement configuration information on the user notification of small-cell 1, make this user on the layer of secondary Serving cell, the carrier wave at place, secondary Serving cell carries out two subframe subsets of specifying measurement and the feedback of above-mentioned CSI, namely measures two kinds of channel statuss between this subscriber equipment to Scell and feed back two kinds of corresponding channel condition informations.Certainly, described predetermined quantity also can be other quantity selected according to actual needs, such as 3.
When by according to the above embodiment of the present invention be applied to mobile communications network in the method that interference coordination is carried out in multiple subframe (time-domain resource) Shang Dui community time, according to the concrete configuration of mobile communications network, different implementations can be used.Introduce two kinds of exemplary implementations below.The concrete operations of each step performed in these two kinds of implementations are identical with the corresponding step of the method described hereinbefore respectively, therefore only carry out concise and to the point description here.Here, be still described for small-cell.
Fig. 4 shows the first example implementations over multiple subframes community being carried out to the method for interference coordination according to the embodiment of the present invention, and it corresponds to the situation that control plane/user face (C/U) is separated.As shown in Figure 4, in S401, user's (such as user equipment (UE)) of each small-cell can measure the RSRP of its Serving cell and other small-cells, and in step S402, the measurement report comprising this measurement result is sent to macrocell.Here, user can send the measurement result of the every other small-cell in the measurement result of Serving cell and cluster, and the difference that also only can send the RSRP of RSRP and Serving cell in the measurement result of Serving cell and cluster is less than the measurement result of the small-cell of above-mentioned predetermined threshold.In addition, except RSRP, user also can measure and send the RSRQ of Serving cell and other small-cells.Next, in step S403, mentioned above its average resource utilization rate within a predetermined period of time or average user quantity are sent to macrocell by small-cell.In step s 404, macrocell is according to the above-mentioned information received from small-cell, determine that small-cell is closed the need of at least one subframe according to above-described method, and need closedown ratio and the " shut " mode" of determining small-cell when closing at least one subframe in small-cell.Then, in step S405, determined " shut " mode" is informed to small-cell, make in step S406, small-cell is according to described " shut " mode" executable operations.In addition, in step S 407, measurement configuration information mentioned above can also be informed to user by macrocell, makes user measure according to either type mentioned above and feed back CSI.
Fig. 5 shows the second example implementations over multiple subframes community being carried out to the method for interference coordination according to the embodiment of the present invention, and it corresponds to the situation that non-C/U is separated, and namely small-cell has controlling functions.This implementation is substantially identical with the first implementation, here by only to the two difference (that is, step S402 ', S403 ' and S407 ') be described.Particularly, in step S402 ', RSRP/RSRQ measurement report is sent to small-cell by UE, instead of macrocell.In step S403 ', received measurement report and the average resource utilization rate of oneself or average user quantity are sent to macrocell by small-cell.In step S407 ', by small-cell instead of macrocell, measurement configuration information is informed to user, make user measure according to either type mentioned above and feed back CSI.
Below, with reference to Fig. 6, the equipment carrying out interference coordination in multiple time-domain resource Shang Dui community according to the embodiment of the present invention is described.This equipment can perform disturbance coordination method mentioned above.As mentioned above, described time-domain resource can be the Radio Resource of subframe or other types, described community can be small cell, such as small-cell, Microcell, picocell etc., and uses small-cell to be described as the example of described community hereinafter.In other embodiments, described community also can be the community of the other types except small-cell, the small cell of such as other types or macrocell etc.Equally, use subframe as the example of time-domain resource here, and use the small-cell 1 shown in Figure 1A as the example of described community.In addition, this interference coordination equipment can be arranged in the macro base station described in Figure 1A, or can be arranged in the control unit shown in Figure 1B.
As shown in Figure 6, interference coordination equipment 600 comprises closedown determining device 601, interference pond storage device 602, closes ratio-dependent device 603, " shut " mode" determining device 604 and notifying device 605.
Close determining device 601 and can determine that small-cell 1 is closed the need of at least one subframe.Closedown determining device 601 can use various ways to determine, and small-cell 1 is closed the need of at least one subframe.Such as, close determining device 601 and whether can exceed predeterminated level according to the interference of the user of other communities in the cluster of 1 pair, small-cell, determine whether small-cell 1 has victim cell mentioned above, thus determine that small-cell 1 is closed the need of at least one subframe.Alternatively, close determining device 601 and whether can be less than predetermined threshold according to the distance (or path loss) in small-cell 1 and cluster between other communities, determine whether small-cell 1 has victim cell, thus determine that small-cell 1 is closed the need of at least one subframe.In both cases, according to the method described for the step S201 shown in Fig. 2 hereinbefore, closing determining device 601 can determine that small-cell 1 is closed the need of at least one subframe respectively, here repeat no more.
For other small-cells in cluster, close determining device 601 and can carry out above-mentioned determination operation similarly, to determine the victim cell of each small-cell.Thus, can determine that the interference to the user of small-cell 1 exceedes the small-cell of predeterminated level, that is, make small-cell 1 become the small-cell of victim cell.Closing determining device 601 can be that interference pond is set up, to record the victim cell of small-cell 1 and to make small-cell 1 become the small-cell (i.e. the interference source community of small-cell 1) of victim cell in small-cell 1.This interference pond can be implemented the file of any appropriate format, such as form etc.Interference pond storage device 602 can store this interference pond, to use in subsequent treatment.Interference pond storage device 602 can realize with the memory of any appropriate format.
Close ratio-dependent device 603 to need in small-cell 1 in pent situation, to determine that the pent subframe in small-cell accounts for the ratio (namely closing ratio) of described multiple subframe at least one subframe.As described above, close ratio-dependent device 603 and can determine described closedown ratio according to the traffic load of small-cell 1.Such as, close ratio-dependent device 603 and can determine described closedown ratio according to small-cell 1 average resource within a predetermined period of time (such as time-domain resource, frequency resource or power resource) utilization rate.In this case, closedown ratio-dependent device 603 can calculate the difference between the average resource utilization rate and 1 within a predetermined period of time of small-cell 1, as shown in above formula (1), and uses the value being not more than described difference as described closedown ratio.Or, as described above, such as above formula (2), (3) or any other formula based on small-cell 1 average resource utilization rate within a predetermined period of time also can be used to determine described closedown ratio.Alternatively, close ratio-dependent device 603 and can determine described ratio based on the relative size between the average resource utilization rate of all or part of small-cell in small-cell 1 average resource utilization rate within a predetermined period of time and cluster in this predetermined amount of time.Such as, closing ratio-dependent device 603 can use above formula (4), (5), (6) or any other formula based on this relative size to determine described closedown ratio.Alternatively, close ratio-dependent device 603 and can determine described ratio according to small-cell 1 average user quantity within a predetermined period of time.In this case, close ratio-dependent device 603 and based on the relative size between the average user quantity of all or part of small-cell in small-cell 1 average user quantity within a predetermined period of time and cluster in this predetermined amount of time, such as, can determine described ratio by above formula (7).Here, the implication of described all or part of small-cell is same as above, therefore repeats no more.
" shut " mode" determining device 604 can receive the closedown ratio of closing ratio-dependent device 603 and determining, and based on described closedown ratio, determines the pent subframe in small-cell 1 (that is, the " shut " mode" of small-cell 1) in described multiple subframe.
Particularly, " shut " mode" determining device 604 can determine the " shut " mode" of small-cell 1 with various ways.In a kind of mode, " shut " mode" determining device 604 can be selected with the subframe of described closedown ratio corresponding number as the pent subframe in described community in described multiple subframe, make in the residue subframe in described multiple subframe, the small-cell of disturbing the small-cell of small-cell 1 in described cluster and be subject to disturbing this small-cell 1 is closed, that is, make the transmission subframe of small-cell 1 orthogonal with the transmission subframe being subject to the small-cell that this small-cell 1 is disturbed with the small-cell of interference small-cell 1.Can by consulting the small-cell that the interference pond be stored in interference pond storage device 602 is determined to disturb the small-cell of small-cell 1 in described cluster and be subject to the interference of this small-cell 1.In addition, in some cases, the small-cell of small-cell 1, interference small-cell 1 and the closedown ratio of small-cell that is subject to the interference of this small-cell 1 may make the transmission subframe of small-cell 1 and disturb the small-cell of small-cell 1 and be subject to the transmission subframe of the small-cell that this small-cell 1 is disturbed cannot be completely orthogonal.Therefore, in the second way, for these situations, the closedown subframe of subframe as small-cell 1 of the number corresponding with described closedown ratio can be selected in described multiple subframe, make in residue subframe (namely, the transmission subframe of small-cell 1) upper pent, the small-cell of small-cell 1 and the small-cell being subject to disturbing small-cell 1 is disturbed (namely in described cluster, the small-cell of recording in the interference pond of small-cell 1) quantity maximum, in other words, can select in described multiple subframe from the transmission subframe of the minimum subframe of the interference of other small-cells as small-cell 1.
Notifying device 604 receives the " shut " mode" of the small-cell 1 that " shut " mode" determining device 604 is determined, and this " shut " mode" is informed to small-cell 1, makes small-cell 1 carry out the transmission of signal according to this " shut " mode".
In addition, as described above, after interference coordination has been carried out to small-cell 1, can dispatch the user of this small-cell 1 further, to determine to distribute to each user sending subframe and the MCS grade selecting this user.For this reason, notifying device 604 can also send measurement configuration information to the user of small-cell 1, makes this user measure the channel status between its to small-cell 1 and feeds back corresponding CSI.
Concrete, notifying device 604 can use various ways to send described measurement configuration information.In the first exemplary approach, notifying device 604 can send measurement configuration information to the user of small-cell 1, this measurement configuration information notifies two kinds of IMR, make this user on the resource location that the first IMR is corresponding, measure channel status when disturbing the strongest small-cell to close to small-cell 1 between this user and small-cell 1, and the CSI that feedback is corresponding, then on the resource location that the second IMR is corresponding, measure the channel status when disturbing the strongest small-cell to open to small-cell 1 between this user and small-cell 1, and the CSI that feedback is corresponding.Certainly, notifying device 604 also to a greater variety of IMR of the user notification of small-cell 1, can make this user measure the CSI corresponding from different small-cell closed conditions respectively on the resource location that these IMR are corresponding, then feeds back these CSI.
In the second exemplary approach, notifying device 604 can to the user notification measurement configuration information of small-cell 1, and this measurement configuration information indicates described user in the subframe subset of predetermined quantity, measure the channel status between this user to small-cell 1 respectively and feed back corresponding CSI.Described subframe subset refers to the set of at least one subframe comprised in described multiple subframe.Here, described predetermined quantity can be 2, user is made in two subframe subsets, to measure two kinds of CSI respectively, such as corresponding with the situation disturbing the strongest small-cell to close to small-cell 1 CSI and the CSI corresponding with the situation disturbing the strongest small-cell not close to small-cell 1, and feed back this two kinds of CSI.This exemplary approach can use in the scene of such as carrier aggregation and so on.Such as, when the secondary Serving cell (Scell) of user is served as in small-cell 1, and when another community (macrocell such as shown in Figure 1A) serves as main Serving cell (Pcell) of user, notifying device 604 can to described measurement configuration information on the user notification of small-cell 1, make this user on the layer of secondary Serving cell, the carrier wave at place, secondary Serving cell carries out two subframe subsets of specifying measurement and the feedback of above-mentioned CSI, namely measures two kinds of channel statuss between this user to Scell and feed back two kinds of corresponding channel condition informations.In other embodiments, described predetermined quantity can be other quantity selected according to actual needs, such as 3.
By the interference coordination equipment according to the embodiment of the present invention, when disposing multiple small-cell thick and fast, can significantly can reduce the interference between small-cell, thus improve the performance of wireless communication system
Above-mentioned interference coordination equipment can pass through hardware implementation, also can be implemented by the software module performed by processor, also can be implemented by both combinations.Software module also can be arranged on RAM(random access memory), flash memory, ROM(read-only memory), EPROM(erasable programmable ROM), EEPROM(electric erasable and programming ROM), register, hard disk, the arbitrary form such as removable dish or CD-ROM storage medium in.This storage medium is connected to processor, makes this processor can to this storage medium reading writing information.In addition, this storage medium also can be integrated into processor.In addition, this storage medium and processor also can be arranged in application-specific integrated circuit (ASIC) (ASIC).This ASIC also can be arranged in above-mentioned control unit or wireless base station eNB.In addition, this storage medium and processor also can be arranged on as discrete component in above-mentioned control unit or wireless base station eNB.
Although illustrate and described example embodiment of the present invention, those skilled in the art are to be understood that, when not deviating from the scope and spirit of the present invention limited in claim and equivalent thereof, the change in various forms and details can be made to these example embodiment.
Claims (18)
1. carry out a method for interference coordination in multiple time-domain resource Shang Dui community, this community and at least one other community form cluster, and described method comprises:
Determine that described community is closed the need of at least one time-domain resource;
Need in pent situation, to determine that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource at least one time-domain resource in described community; And
Based on described ratio, determine the pent time-domain resource in community described in described multiple time-domain resource.
2. the method for claim 1, wherein determine that described community comprises the need of step pent at least one time-domain resource:
According to described community, whether predeterminated level is exceeded to the interference of the user of other communities in cluster, determine that described community is closed the need of at least one time-domain resource.
3. the method for claim 1, wherein determine that described community comprises the need of step pent at least one time-domain resource:
Whether be less than predetermined threshold according to the distance in described community and cluster between other communities, determine that described community is closed the need of at least one time-domain resource.
4. the method as described in any one of claims 1 to 3, wherein, determine that the step that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource comprises:
Described ratio is determined according to described community average resource utilization rate within a predetermined period of time.
5. the method as described in any one of claims 1 to 3, wherein, determine that the step that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource comprises:
According to the relative size between the average resource utilization rate of the part or all of community in described community average resource utilization rate within a predetermined period of time and cluster in this predetermined amount of time, determine described ratio.
6. the method as described in any one of claims 1 to 3, wherein, determine that the step that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource comprises:
According to the relative size between the average user quantity of the part or all of community in described community average user quantity within a predetermined period of time and cluster in this predetermined amount of time, determine described ratio.
7. the method as described in any one of claims 1 to 3, wherein, based on described ratio, determine that the step of the pent time-domain resource in community described in described multiple time-domain resource comprises:
In described multiple time-domain resource, select the time-domain resource of the number corresponding with described ratio as the pent time-domain resource in described community, make in the residue time-domain resource in described multiple time-domain resource, the community of disturbing this community in described cluster and the community being subject to this area interference are closed.
8. the method as described in any one of claims 1 to 3, wherein, based on described ratio, determine that the step of the pent time-domain resource in community described in described multiple time-domain resource comprises:
In described multiple time-domain resource, select the time-domain resource of the number corresponding with described ratio as the pent time-domain resource in described community, make the quantity of the community of the residue time-domain resource in described multiple time-domain resource being disturbed the community of this community in pent described cluster and being subject to this area interference maximum.
9. the method as described in any one of claims 1 to 3, wherein, the secondary Serving cell Scell of subscriber equipment is served as in described community, and the main Serving cell Pcell of subscriber equipment is served as in another community, and wherein, described method also comprises:
To notification of user equipment measurement configuration information, described measurement configuration information equipment for indicating user is measured the multiple channel status between this subscriber equipment to described Serving cell to the time-domain resource subset of specifying and is fed back corresponding multiple channel condition information on the carrier wave at place, secondary Serving cell.
10. carry out an equipment for interference coordination in multiple time-domain resource Shang Dui community, this community and at least one other community form cluster, and described equipment comprises:
Close determining device, be configured to determine that described community is closed the need of at least one time-domain resource;
Close ratio-dependent device, be configured to need in pent situation, to determine that the pent time-domain resource in described community accounts for the ratio of described multiple time-domain resource at least one time-domain resource in described community; And
" shut " mode" determining device, is configured to based on described ratio, determines the pent time-domain resource in community described in described multiple time-domain resource.
11. equipment as claimed in claim 10, wherein, whether described closedown determining device exceedes predeterminated level according to described community to the interference of the user of other communities in cluster, determines that described community is closed the need of at least one time-domain resource.
12. equipment as claimed in claim 10, wherein, whether described closedown determining device is less than predetermined threshold according to the distance in described community and cluster between other communities, determines that described community is closed the need of at least one time-domain resource.
13. equipment as claimed in claim 10, wherein, described closedown ratio-dependent device determines described ratio according to described community average resource utilization rate within a predetermined period of time.
14. equipment as described in any one of claim 10 to 12, wherein, described closedown ratio-dependent device determines described ratio according to the relative size between the average resource utilization rate of the part or all of community in described community average resource utilization rate within a predetermined period of time and cluster in this predetermined amount of time.
15. equipment as described in any one of claim 10 to 12, wherein, described closedown ratio-dependent device determines described ratio according to the relative size between the average user quantity of the part or all of community in described community average user quantity within a predetermined period of time and cluster in this predetermined amount of time.
16. equipment as described in any one of claim 10 to 12, wherein, described " shut " mode" determining device selects the time-domain resource of the number corresponding with described ratio as the pent time-domain resource in described community in described multiple time-domain resource, make in the residue time-domain resource in described multiple time-domain resource, the community of disturbing this community in described cluster and the community being subject to this area interference are closed.
17. equipment as described in any one of claim 10 to 12, wherein, described " shut " mode" determining device selects the time-domain resource of the number corresponding with described ratio as the pent time-domain resource in described community in described multiple time-domain resource, makes the quantity of the community of the residue time-domain resource in described multiple time-domain resource being disturbed the community of this community in pent described cluster and being subject to this area interference maximum.
18. equipment as described in any one of claim 10 to 12, wherein, the secondary Serving cell Scell of subscriber equipment is served as in described community, and the main Serving cell Pcell of subscriber equipment is served as in another community, and wherein, described equipment also comprises:
Notifying device, be configured to notification of user equipment measurement configuration information, described measurement configuration information equipment for indicating user is measured the multiple channel status between this subscriber equipment to described Serving cell to the time-domain resource subset of specifying and is fed back corresponding multiple channel condition information on the carrier wave at place, secondary Serving cell.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602347A (en) * | 2013-10-31 | 2015-05-06 | 株式会社Ntt都科摩 | Method and equipment for coordinating cell on plurality of resource blocks |
| CN108093477A (en) * | 2016-11-23 | 2018-05-29 | 成都鼎桥通信技术有限公司 | The method and device that downlink resource distributes in cluster voice system |
| CN110996377A (en) * | 2019-11-25 | 2020-04-10 | 宜通世纪科技股份有限公司 | Base station energy saving method, system, device and storage medium |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6432103B2 (en) * | 2015-06-01 | 2018-12-05 | シャープ株式会社 | Communication system, centralized control apparatus, interference control method, and interference control program |
| CN114885336A (en) * | 2022-06-09 | 2022-08-09 | 中国联合网络通信集团有限公司 | Interference coordination method, device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186247A (en) * | 2011-05-05 | 2011-09-14 | 新邮通信设备有限公司 | Method and system for coordinating interference between cells |
| CN102984722A (en) * | 2011-09-06 | 2013-03-20 | 普天信息技术研究院有限公司 | Measuring and collocation method in interference coordination mechanism |
| US20130107798A1 (en) * | 2011-11-02 | 2013-05-02 | Hitachi, Ltd. | ABS-based Method for Inter Cell Interference Coordination in LTE-Advanced Networks |
| US20130121191A1 (en) * | 2011-11-14 | 2013-05-16 | Qualcomm Incorporated | Methods and apparatus for reducing interference in a heterogeneous network |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101566095B1 (en) * | 2011-01-31 | 2015-11-04 | 후지쯔 가부시끼가이샤 | Wireless communication system, base station, mobile station, and wireless communication method |
| CN102790973B (en) * | 2011-05-17 | 2017-09-26 | 株式会社Ntt都科摩 | Method, base station and the wireless network of wireless network medium and small interval interference coordination |
| JP2013042202A (en) * | 2011-08-11 | 2013-02-28 | Kddi Corp | Optimum solution detection device, and optimum solution detection program |
-
2013
- 2013-07-04 CN CN201310278083.6A patent/CN104284421A/en active Pending
-
2014
- 2014-07-04 JP JP2014138224A patent/JP6399830B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186247A (en) * | 2011-05-05 | 2011-09-14 | 新邮通信设备有限公司 | Method and system for coordinating interference between cells |
| CN102984722A (en) * | 2011-09-06 | 2013-03-20 | 普天信息技术研究院有限公司 | Measuring and collocation method in interference coordination mechanism |
| US20130107798A1 (en) * | 2011-11-02 | 2013-05-02 | Hitachi, Ltd. | ABS-based Method for Inter Cell Interference Coordination in LTE-Advanced Networks |
| US20130121191A1 (en) * | 2011-11-14 | 2013-05-16 | Qualcomm Incorporated | Methods and apparatus for reducing interference in a heterogeneous network |
Non-Patent Citations (4)
| Title |
|---|
| NTT DOCOMO: "Performance Evaluation of ICIC with DL Transmission Power Adaptation for SCE", 《3GPP TSG RAN WG1 MEETING #73 R1-132362》 * |
| NTT DOCOMO: "Performance Evaluation of ICIC with DL Transmission Power Adaptation for SCE", 《3GPP TSG RAN WG1 MEETING #73 R1-132680》 * |
| ZTE: "Interference avoidance and coordination enhancement in small cell", 《3GPP TSG RAN WG1 MEETING #72BIS R1-131060》 * |
| ZTE: "Interference avoidance and coordination enhancement in small cell", 《3GPP TSG RAN WG1 MEETING #73 R1-132098》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602347A (en) * | 2013-10-31 | 2015-05-06 | 株式会社Ntt都科摩 | Method and equipment for coordinating cell on plurality of resource blocks |
| CN104602347B (en) * | 2013-10-31 | 2019-09-17 | 株式会社Ntt都科摩 | The method and apparatus that cell is coordinated on multiple resource blocks |
| CN108093477A (en) * | 2016-11-23 | 2018-05-29 | 成都鼎桥通信技术有限公司 | The method and device that downlink resource distributes in cluster voice system |
| CN108093477B (en) * | 2016-11-23 | 2021-02-19 | 成都鼎桥通信技术有限公司 | Method and device for allocating downlink resources in cluster voice system |
| CN110996377A (en) * | 2019-11-25 | 2020-04-10 | 宜通世纪科技股份有限公司 | Base station energy saving method, system, device and storage medium |
| CN110996377B (en) * | 2019-11-25 | 2023-04-18 | 宜通世纪科技股份有限公司 | Base station energy saving method, system, device and storage medium |
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| Publication number | Publication date |
|---|---|
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Application publication date: 20150114 |