CN105992287A - Interference coordination method and device in multi-standard network - Google Patents
Interference coordination method and device in multi-standard network Download PDFInfo
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Abstract
The invention discloses an interference coordination method and device in a multi-standard network to reduce or eliminate the interference in a same-standard network and realize the interference coordination between standards. The method comprises the steps that for each UE, a CRRM calculates a priority, generates an ordered UE queue, and traverses each UE in the ordered UE queue, when selected current UE is edge UE in a corresponding target candidate RAT cell, a condition that the current UE interferes with the edge UE with the distribution of the RAT cell in distributing the corresponding target candidate RAT cell is further judged, one candidate RAT cell is selected from the candidate RAT cells corresponding to all RAT types supported by the current UE and is distributed to the current UE. Thus, the interaction resource consumption between base stations can be reduced, a RAT cell which is most suitable for distribution is distributed for the UE, and the interference in the same standard network is reduced or eliminated.
Description
Technical field
The present invention relates to communication technical field, particularly to the disturbance coordination method under a kind of multi-mode networks and device.
Background technology
Development along with mobile communications network, increasing operator has the network (can be called for short multi-mode networks) of multiple different systems simultaneously, multiple wireless access technology (Radio Access Technology, RAT) can be such as GSM, UMTS, LTE and WLAN, these RAT standard networks are respectively arranged with pluses and minuses, owing to present various RAT are overlapping covering in a lot of regions, therefore the different types of RAT of these overlapped coverings can be combined, utilize multimode terminal intelligentized access hands section, make to learn from other's strong points to offset one's weaknesses between many RAT system, jointly provide the user wireless access anywhere or anytime.
Management for multi-mode networks, as shown in Figure 1, use common radio resource management (Common Radio Resource Management, CRRM) concept, be equivalent to introduce centralized control node and multiple RAT is unified centralized management, it is provided that the collaborative and resource management of cross-mode.
In prior art, it is usually what the distribution of combining wireless resource realized for the interference coordination technique under many RAT.CRRM can obtain the Radio Resource relevant information (such as scheduled resource information and residue idling-resource information etc.) of all RAT communities, realizes interference coordination alternately by information frequent and huge between base station and CRRM.This implementation complexity is high, and information interaction amount is big.
Additionally, in prior art, under different RAT are with covering scene, when same RAT minizone (i.e. with in standard) interference coordination can not complete, just can consider to coordinate different RAT minizones (i.e. between different systems), this coordination mode can regard a kind of passive behavior as, namely to a kind of additional project of interference coordination under same standard.And, existing interference coordination technique is when realizing interference coordination, if subscriber equipment (User Equipment, UE) and some RAT community do not supported do not set up wireless connections, then existing interference coordination technique can not be used to carry out interference coordination in different RAT minizones.
In sum, the disturbance coordination method under prior art can't provide a kind of effective multi-mode networks.
Summary of the invention
The embodiment of the present invention provides the disturbance coordination method under a kind of multi-mode networks and device, in order to reduce or to eliminate with the interference in standard network.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of disturbance coordination method under multi-mode networks, including:
CRRM calculates priority respectively for each user equipment (UE), and is ranked up by all UE according to the priority calculating gained, generates orderly UE queue；
CRRM travels through each UE in described orderly UE queue, when selected current UE is edge UE in corresponding target candidate wireless access technology RAT community, determine whether that described current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that CRRM supports in described current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by the distribution of described current UE is scheduling RAT community.
As such, it is possible to by simple implementation, reduce the mutual resource consumption between base station, by by UE coordinated scheduling to different RAT communities, being best suitable for the RAT community of scheduling for UE distribution, reduce or eliminate with the interference in standard network.
It is preferred that before CRRM calculates priority respectively for each UE, farther include:
CRRM determines each UE positional information in corresponding candidate RAT community, and described positional information is UE or edge UE centered by one UE of instruction is in a corresponding candidate RAT community；
Wherein, often determine when a UE is edge UE in a corresponding candidate RAT community, edge UE for currently determining creates the list of corresponding interfered cell, all adjacent cells in the adjacent cell list of the candidate RAT community that the list of described interfered cell comprises described correspondence.
Preferably, whenever for an edge UE distribution corresponding scheduling RAT community, the edge UE corresponding interfered cell list currently distributed is updated operation, and described renewal operation refers in the interfered cell list original for edge UE that the scheduling RAT community of the edge UE by described current distribution adds described current distribution to.
Preferably, during each UE in traveling through described orderly UE queue, whenever UE centered by selected current UE is in corresponding target candidate RAT community, then CRRM is directly that the corresponding target candidate RAT community of center UE distribution of current selected is for dispatching RAT community.
It is preferred that judge that described current UE is in the case of distributing corresponding target candidate RAT community, if the edge UE that scheduling RAT community is assigned is interfered, specifically includes:
Judge whether described current UE corresponding target candidate RAT community is present in the interfered cell list after any one edge UE that scheduling RAT community has been assigned updates, the most then judge that the edge UE that scheduling RAT community is assigned is interfered by described current UE.
It is preferred that select a candidate RAT community in candidate RAT community corresponding to all RAT types of supporting in described current UE based on default selection mode of CRRM, and the candidate RAT community selected by the distribution of described current UE is for dispatching RAT community, specifically includes:
Similar RAT set of cells based on the described current UE corresponding target candidate RAT community previously generated, judge that whether the edge UE of described current selected is the center UE of any one the candidate RAT community comprised in described similar RAT set of cells, wherein, the RAT characteristic related in described similar RAT set of cells is similar；
If it is determined that at least one candidate RAT community Zhong Shi center UE that described current UE comprises in described similar RAT set of cells, then at least one candidate RAT community described, any one candidate RAT community of selection is the scheduling RAT community of the edge UE of described current selected；
If it is determined that all candidate RAT communities of comprising in described similar RAT set of cells of described current UE are not center UE, then estimate the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding, select the highest candidate RAT community of weight as the scheduling RAT community of described current UE, wherein, described weight is used for characterizing candidate RAT community and is suitable for scheduling
The degree of the edge UE of described current selected.
It is preferred that the method for estimation of described weight at least includes:
The incidence relation between traffic performance and RAT characteristic according to default UE, traffic performance for described current UE, estimate the priority of candidate RAT community corresponding to all RAT types that described current UE is supported, according to the priority determined, in conjunction with parameters such as the channel quality of candidate RAT community of described correspondence, Radio Resource occupancies, determine the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding.
It is preferred that select a candidate RAT community in candidate RAT community corresponding to all RAT types of supporting in described current UE based on default selection mode of CRRM, and the candidate RAT community selected by the distribution of described current UE is for dispatching RAT community, specifically includes:
Calculate the effective transmission capacity of each candidate RAT community in candidate RAT community corresponding to all RAT types that described current UE is supported, select candidate RAT community that maximum effective transmission capacity is corresponding as the scheduling RAT community of described current UE；
Wherein, described effective transmission capacity refers to based on the UE transfer rate a candidate RAT community or/and channel quality, in conjunction with the bearing capacity of one candidate RAT community determined by the surplus yield of one candidate RAT community.
A kind of interference coordination device under multi-mode networks, including:
All UE for calculating priority respectively for each UE, and are ranked up according to the priority calculating gained, generate orderly UE queue by sequencing unit；
Allocation unit, for traveling through each UE in described orderly UE queue, when selected current UE is edge UE in corresponding target candidate RAT community, determine whether that described current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that described allocation unit is supported in described current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by the distribution of described current UE is scheduling RAT community.
As such, it is possible to by simple implementation, reduce the mutual resource consumption between base station, by by UE coordinated scheduling to different RAT communities, being best suitable for the RAT community of scheduling for UE distribution, reduce or eliminate with the interference in standard network.
It is preferred that before calculating priority respectively for each UE, farther include:
Pretreatment unit, for determining each UE positional information in corresponding candidate RAT community, described positional information is UE or edge UE centered by one UE of instruction is in a corresponding candidate RAT community；
Wherein, often determine when a UE is edge UE in a corresponding candidate RAT community, edge UE for currently determining creates the list of corresponding interfered cell, all adjacent cells in the adjacent cell list of the candidate RAT community that the list of described interfered cell comprises described correspondence.
It is preferred that farther include:
Updating block, for whenever for an edge UE distribution corresponding scheduling RAT community, the edge UE corresponding interfered cell list currently distributed is updated operation, and described renewal operation refers in the interfered cell list original for edge UE that the scheduling RAT community of the edge UE by described current distribution adds described current distribution to.
It is preferred that described allocation unit is further used for:
During each UE in traveling through described orderly UE queue, whenever UE centered by selected current UE is in corresponding target candidate RAT community, the most described allocation unit is directly that the center UE of current selected distributes corresponding target candidate RAT community for scheduling RAT community.
It is preferred that judging that described current UE is being distributed in the case of corresponding target candidate RAT community, if when the edge UE that scheduling RAT community is assigned is interfered, described allocation unit specifically for:
Judge whether described current UE corresponding target candidate RAT community is present in the interfered cell list after any one edge UE that scheduling RAT community has been assigned updates, the most then judge that the edge UE that scheduling RAT community is assigned is interfered by described current UE.
It is preferred that select a candidate RAT community in the candidate RAT community that all RAT types supported in described current UE based on default selection mode are corresponding, and selected by distributing for described current UE
Candidate RAT community for scheduling RAT community time, described allocation unit specifically for:
Similar RAT set of cells based on the described current UE corresponding target candidate RAT community previously generated, judge that whether the edge UE of described current selected is the center UE of any one the candidate RAT community comprised in described similar RAT set of cells, wherein, the RAT characteristic related in described similar RAT set of cells is similar；
If it is determined that at least one candidate RAT community Zhong Shi center UE that described current UE comprises in described similar RAT set of cells, then at least one candidate RAT community described, any one candidate RAT community of selection is the scheduling RAT community of the edge UE of described current selected；
If it is determined that all candidate RAT communities of comprising in described similar RAT set of cells of described current UE are not center UE, then estimate the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding, select the highest candidate RAT community of weight as the scheduling RAT community of described current UE, wherein, described weight is for characterizing the degree that candidate RAT community is suitable for dispatching the edge UE of described current selected.
It is preferred that described allocation unit is during the candidate RAT community selected by the distribution of described current UE is for scheduling RAT community, the method for estimation of described weight at least includes:
The incidence relation between traffic performance and RAT characteristic according to default UE, traffic performance for described current UE, estimate the priority of candidate RAT community corresponding to all RAT types that described current UE is supported, according to the priority determined, in conjunction with parameters such as the channel quality of candidate RAT community of described correspondence, Radio Resource occupancies, determine the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding.
Preferably, a candidate RAT community is selected in the candidate RAT community that all RAT types supported in described current UE based on default selection mode are corresponding, and for described current UE distribution selected by candidate RAT community for scheduling RAT community time, described allocation unit specifically for:
Calculate the effective transmission capacity of each candidate RAT community in candidate RAT community corresponding to all RAT types that described current UE is supported, select candidate RAT community that maximum effective transmission capacity is corresponding as the scheduling RAT community of described current UE；
Wherein, described effective transmission capacity refers to based on the UE transfer rate a candidate RAT community or/and channel quality, in conjunction with the bearing capacity of one candidate RAT community determined by the surplus yield of one candidate RAT community.
Accompanying drawing explanation
Fig. 1 is that in prior art, CRRM manages RAT configuration diagram；
Fig. 2 is the disturbance coordination method flow chart in the embodiment of the present invention under multi-mode networks；
Fig. 3 and Fig. 4 is CRRM structure chart in the embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention devises the disturbance coordination method under a kind of multi-mode networks and device, by by UE coordinated scheduling to different RAT communities, so that when following resource distributes, reduce or eliminate with the interference in standard, and, when realizing interference coordination between different systems, need not built vertical wireless link between UE with multiple RAT communities be connected, and, between different systems after interference coordination, interference can be reduced further, it is ensured that the accuracy of interference coordination, effectiveness in conjunction with the disturbance coordination method in same standard.
It should be noted that, UE in the embodiment of the present invention can only support a kind of RAT, at least two RAT can also be supported simultaneously, for convenience of description, method in the embodiment of the present invention illustrates just for the UE supporting at least two RAT simultaneously, certainly, it is also applied for only supporting the UE of a kind of RAT, specifically will be described in more detail in subsequent process.It addition, describe for convenience, in the embodiment of the present invention, UE supports that at least two RAT type, then the RAT community that this at least two RAT type is corresponding are referred to as the candidate RAT community of this UE simultaneously；In multiple candidate RAT communities at this UE place, a RAT community being best suitable for dispatching this UE can be selected based on multiple judgement parameters such as channel qualities, can be described as the target candidate RAT community of this UE；The RAT community finally distributed for UE by disturbance coordination method is referred to as the scheduling RAT community of this UE.
Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is described in detail.
At pretreatment stage, CRRM obtains each UE positional information in corresponding RAT community, described positional information includes: center situation and borderline state, wherein, center situation is used for indicating UE to be in center of housing estate (assuming referred to as center UE) in corresponding RAT community, and borderline state is used for indicating UE to be in cell edge (assuming referred to as edge UE) in corresponding RAT community.
In actual applications, UE is probably center UE on corresponding RAT community, it is also likely to be edge UE, center UE is typically closer from the base station of its community, place, namely it is not readily susceptible to the interference of neighbor cell, and edge UE generally lies in the edge of community at its place, is near the boundary of neighbor cell, is highly susceptible to the interference of neighbor cell.
CRRM is to each UE under its management, judge at corresponding Shang Shi center, RAT community UE, or edge UE, if the current UE that CRRM judges supports multiple RAT simultaneously, judgement is performed the most respectively on these multiple RAT communities, wherein, UE state on its each supported candidate RAT community is independent, such as, this UE may be at its one of them supported candidate RAT community Shang Shi center UE, and at other candidate RAT communities Shang Shi edge UE that it is supported, the most such as, this UE is at its each supported candidate RAT community Shang Doushi edge UE.
Wherein, often determine when a UE is edge UE in a corresponding candidate RAT community, create the list of corresponding interfered cell, all adjacent cells in the adjacent cell list of the candidate RAT community that interfered cell list comprises this correspondence for the edge UE currently determined.
Specifically, if CRRM judges that some UE is at its candidate RAT community Shang Shi edge UE supported, obtain the Neighboring Cell List (this Neighboring Cell List is the homogeneous-frequency adjacent-domain of current RAT community, and the community in this Neighboring Cell List is general it is believed that UE is likely to result in strong jamming) of this candidate RAT community that this UE reports the most simultaneously.
It addition, if the current UE that CRRM judges only supports a kind of RAT, then CRRM only judges this UE state on this kind of RAT community.
Refering to shown in Fig. 2, in the embodiment of the present invention, the disturbance coordination method under multi-mode networks specifically includes:
Step 200:CRRM calculates priority respectively for each UE, and is ranked up by all UE according to the priority calculating gained, generates orderly UE queue.
CRRM performs sequencer procedure to its all UE managed, and this process is determined by the priority of all UE.
Wherein, the priority of UE is determined by the RAT community at its place, if UE supports at least two RAT type simultaneously, then determined by the target candidate RAT community in this at least two candidate RAT community, and selecting the method for target candidate RAT community first weight to each candidate RAT community can carry out rough calculating, the highest candidate RAT community of reselection weight is as target candidate RAT community.
The computational methods of each candidate's RAT cell weight can the parameter determination such as channel quality based on RAT community, or, combine RAT characteristic according to the traffic performance of UE and be modified.
Such as, when UE has multiple business, according to the service quality of multiple business, the weight of each candidate RAT community can be weighted, can also be determined that weight is weighted by the priority of each candidate RAT according to the business of this UE, e.g., the business of this UE is speech business, then the weight of the GSM network at this UE place can properly increase, and for example, the business of this UE is video traffic, then the weight on the LTE at this UE place and wlan network can properly increase.
If UE only supports a kind of RAT, then directly determined the priority of UE by this kind of RAT community.
The determination method of the priority of UE can use Proportional-Fair algorithm, i.e. considers the substantially fairness of long-term delivery data throughout, and considers situation of change and the historical throughput of short-term channel, distributes a corresponding priority for all UE.The determination method of the priority of UE is not limited to use Proportional-Fair algorithm, can use the various sequencing meanses often used in communication system.
It addition, the traffic performance that the sequence between UE can be combined with UE is modified, such as, if the business of UE1 is speech business, the business of UE2 is network game service, then the sequence of the adjustable UE1 sequence prior to UE2.
Step 210:CRRM travels through each UE in orderly UE queue, when selected current UE is edge UE in corresponding target candidate RAT community, determine whether that current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that CRRM supports in current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by current UE distribution is for dispatching RAT cell scheduling RAT community.
Specifically, CRRM is successively for the suitably scheduling RAT community of each UE distribution in the orderly UE queue generated in step 200.
CRRM often selectes a UE, the state of the UE first judged according to pretreatment stage, determines that this UE is at its target candidate RAT community Shang Shi center UE or edge UE.
If it is determined that this UE in corresponding target candidate RAT community centered by UE, then CRRM directly for this UE distribute this corresponding target candidate RAT community for scheduling RAT community.
The most so distribute, be because, if this UE in its target candidate RAT community centered by UE, then illustrate this UE will not and neighbor cell between there is the biggest interference, select this UE of this target candidate RAT cell scheduling to be possible not only to avoid interference, but also can guarantee that the optimality of scheduling UE.
Wherein, if this UE only supports a kind of RAT, then, when judging UE centered by this UE is in this kind of RAT community, directly distribute this RAT community for dispatching RAT community for this UE.
If it is determined that this UE is edge UE in corresponding target candidate RAT community, then determine whether to distribute this target candidate RAT community if this UE, whether other edges UE that scheduling RAT community is assigned can be interfered, the candidate RAT community that all RAT types that the most then CRRM supports at this UE based on default selection mode are corresponding select a most suitable candidate RAT community to dispatch this UE；Otherwise, illustrate that this target candidate RAT community is suitable for the transmission of this UE, then distribute this target candidate RAT community for scheduling RAT community for this UE.
Wherein, if this UE is the edge UE in corresponding target candidate RAT community judged first in ergodic process, i.e., this UE is first UE in ergodic process, or, UE before this UE is the center UE in corresponding target candidate RAT community, the most there is not the edge UE that scheduling RAT community is assigned, then CRRM directly distributes corresponding target candidate RAT community for scheduling RAT community for this UE.
This target candidate RAT community is distributed judging, if when can interfere other edges UE being assigned with scheduling RAT community, concrete determination methods is if this UE:
Judge in the corresponding interfered cell list whether this UE corresponding target candidate RAT community is present in any one UE that scheduling RAT community has been assigned, if, then judge that the corresponding edge UE that scheduling RAT community is assigned is interfered by this UE, wherein, whenever for an edge UE distribution corresponding scheduling RAT community, the edge UE corresponding interfered cell list currently distributed is updated operation, updates in the interfered cell list original for edge UE that operation refers to add the scheduling RAT community of the edge UE currently distributed to current distribution.That is, one interfered cell list includes: a scheduling RAT community corresponding for edge UE, and, all adjacent cells of scheduling RAT community corresponding for this edge UE.
Specifically, CRRM has been assigned the edge cell of RAT community first against each, obtains the interfered cell list after corresponding renewal respectively.
Then judge whether current UE corresponding target candidate RAT community is present in the interfered cell list after any one updates, if this UE corresponding target candidate RAT community is not present in any one interfered cell list, if then illustrating that this UE distributes this target candidate RAT community for scheduling RAT community, the edge UE having been allocated for dispatching RAT community will not be interfered, in this case, CRRM can be that this UE distributes this target candidate RAT community for scheduling RAT community.
If this UE corresponding target candidate RAT community is present in any one interfered cell list, then illustrate, if this UE distributes this target candidate RAT community for scheduling RAT community, the edge UE having been allocated for RAT community can be interfered, in this case, CRRM, by candidate RAT community corresponding for all RAT types of supporting at this UE, selects a candidate RAT community for scheduling RAT community for this UE again, wherein, all RAT communities that this UE supports include this target candidate RAT community.Specifically chosen mode can use but be not limited to following two method.
First kind of way is:
Similar RAT set of cells based on this UE corresponding target candidate RAT community previously generated, judges that whether this UE is the center UE of the RAT community comprised in similar RAT set of cells successively, and wherein, the RAT characteristic related in similar RAT set of cells is similar；
If it is determined that at least one Zhong Shi center, RAT community UE that this UE comprises in similar RAT set of cells, then the scheduling RAT community arbitrarily selecting a RAT community to be this UE in this at least one RAT community；
If it is determined that all RAT communities of comprising in similar RAT set of cells of this UE are not center UE, then estimate the weight of candidate RAT community corresponding to all RAT types that this UE supports, select the highest candidate RAT community of weight as the scheduling RAT community of this edge UE, wherein, weight is suitable for dispatching the degree of UE for characterizing RAT community.
Specifically, planning in advance is suitable for the similar RAT set of switching mutually, gathers based on this similar RAT, can be that this UE corresponding target candidate RAT community determines similar RAT set of cells.Wherein, the generation of RAT set can be determined according to RAT characteristic, and such as, LTE standard forms a similar RAT set, one the similar RAT set of the composition such as GSM standard and UMTS standard with WLAN standard etc..
UE centered by whether judging in this UE each candidate RAT community in the similar RAT set of cells of this target candidate RAT community, if at least one candidate RAT community Zhong Shi center UE that this UE is in this similar RAT set of cells, in this at least one candidate RAT community, then select the scheduling RAT community of any one candidate RAT community this UE the most, or, further, select channel quality preferably in this at least one candidate RAT community or the minimum scheduling RAT community that candidate RAT community is this UE of resources occupation rate.In such manner, it is possible to ensure the effectiveness of UE scheduling, improve resource utilization ratio.
If any one candidate RAT community Zhong Doubushi center UE that this UE is in this similar RAT set of cells, then CRRM selects the candidate RAT community being best suitable for dispatching this UE for scheduling RAT community in all candidate RAT communities.Specifically chosen method is:
Calculate the weight of RAT community corresponding to all RAT types that this UE supports, wherein, weight is for characterizing the appropriateness of RAT this UE of cell scheduling, wherein, the computational methods of weight at least may include that the incidence relation between traffic performance and RAT characteristic according to the UE preset, traffic performance for this UE, estimate the priority of RAT community corresponding to all RAT types that this UE supports, according to the priority determined, channel quality in conjunction with corresponding RAT community, the parameters such as Radio Resource occupancy, determine the weight of RAT community corresponding to all RAT types that this UE supports.
For example, it is assumed that comprise the combination network of four kinds of RAT in current network systems, be respectively as follows: GSM, UMTS, LTE and WLAN, then the different business according to UE can carry out the determination of priority to these four network.
As, the business of current UE is speech business, and the priority of these four RAT standard network is followed successively by: 1,3/4,2/4,1/4；
As, the business of current UE is ftp business, and the priority of these four RAT standard network is followed successively by: 1/4,2/4,3/4,1.
The estimated value that the determination of above priority is simply combined according to the traffic performance of UE and the characteristic of RAT standard and illustrates, in actual application, can the most constantly carry out the renewal optimization of algorithm.
The priority of each RAT standard is estimated according to the traffic performance that this UE is current, according to the priority obtained, in conjunction with channel quality, Radio Resource occupancy, the weight of each candidate RAT community is estimated, find out the candidate RAT community that weight is maximum, then distribute the maximum candidate RAT community of this weight as scheduling RAT community for this edge UE.
In said process, generation and the priority for the RAT of different business of similar RAT set can be set in advance in CRRM by management personnel at the network planning initial stage, channel quality, Radio Resource occupancy and RAT native region priority weight etc. then by the CRRM in access network according to preset formula regular update.
Second method is:
Calculate this UE effective transmission capacity in candidate RAT community corresponding to its all RAT types supported, select candidate RAT community that maximum effective transmission capacity is corresponding as the scheduling RAT community of this UE.
Based on this UE transfer rate on the candidate RAT community that its all RAT types supported are corresponding, and, the surplus yield that each candidate RAT community is corresponding, calculate this edge UE effective transmission capacity in this each candidate RAT community, select the scheduling RAT community of candidate RAT community this edge UE the most of effective transmission capacity maximum.
Wherein, for this UE acquisition of transfer rate on each candidate RAT community, can be obtained by this UE historic transmission speed on corresponding candidate RAT community, if corresponding candidate RAT community this UE of unscheduled mistake in history is dispatched, it is also possible to the historic transmission speed of other UE based on the business having identical QCI grade with this UE obtains.
So far, the disturbance coordination method under multi-mode networks is introduced complete.The execution of above-mentioned interference coordination can pass through periodic triggers, triggers the interference coordination to multi-mode networks when setting cycle arrives；Can also be triggered by event, such as, when UE changes at the center of corresponding RAT community or borderline state, trigger the interference coordination to multi-mode networks immediately.
Based on above-described embodiment, refering to shown in Fig. 3, the present invention have also been devised the interference coordination device under a kind of multi-mode networks, including: sequencing unit 31 and allocation unit 32.
All UE for calculating priority respectively for each UE, and are ranked up according to the priority calculating gained, generate orderly UE queue by sequencing unit 31.
Allocation unit 32, for traveling through each UE in orderly UE queue, when selected current UE is edge UE in corresponding target candidate RAT community, determine whether that current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that allocation unit 32 is supported in current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by current UE distribution is for dispatching RAT community.
As such, it is possible to by simple implementation, reduce the mutual resource consumption between base station, by by UE coordinated scheduling to different RAT communities, being best suitable for the RAT community of scheduling for UE distribution, reduce or eliminate with the interference in standard network.
It is preferred that before calculating priority respectively for each UE, farther include:
Pretreatment unit 30, for determining each UE positional information in corresponding candidate RAT community, positional information is UE or edge UE centered by one UE of instruction is in a corresponding candidate RAT community；
Wherein, often determine when a UE is edge UE in a corresponding candidate RAT community, create the list of corresponding interfered cell for the edge UE currently determined, all adjacent cells in the adjacent cell list of the candidate RAT community that interfered cell list comprises correspondence.
It is preferred that farther include:
Updating block 33, for whenever for an edge UE distribution corresponding scheduling RAT community, the edge UE corresponding interfered cell list currently distributed is updated operation, updates in the interfered cell list original for edge UE that operation refers to add the scheduling RAT community of the edge UE currently distributed to current distribution.
It is preferred that allocation unit 32 is further used for:
During each UE in traveling through orderly UE queue, whenever UE centered by selected current UE is in corresponding target candidate RAT community, then allocation unit 32 is directly that the corresponding target candidate RAT community of center UE distribution of current selected is for dispatching RAT community.
It is preferred that judging that current UE is being distributed in the case of corresponding target candidate RAT community, if when the edge UE that scheduling RAT community is assigned is interfered, allocation unit 32 specifically for:
Judge whether current UE corresponding target candidate RAT community is present in the interfered cell list after any one edge UE that scheduling RAT community has been assigned updates, the most then judge that the edge UE that scheduling RAT community is assigned is interfered by current UE.
Preferably, a candidate RAT community is selected in the candidate RAT community that all RAT types supported in current UE based on default selection mode are corresponding, and for current UE distribution selected by candidate RAT community for scheduling RAT community time, allocation unit 32 specifically for:
Similar RAT set of cells based on the current UE previously generated corresponding target candidate RAT community, judge that whether the edge UE of current selected is the center UE of any one the candidate RAT community comprised in similar RAT set of cells, wherein, the RAT characteristic related in similar RAT set of cells is similar；
If it is determined that at least one candidate RAT community Zhong Shi center UE that current UE comprises in similar RAT set of cells, then at least one candidate RAT community, any one candidate RAT community of selection is the scheduling RAT community of the edge UE of current selected；
If it is determined that all candidate RAT communities of comprising in similar RAT set of cells of current UE are not center UE, the weight of each candidate RAT community in the candidate RAT community that then all RAT types of estimation current UE support are corresponding, select the highest candidate RAT community of weight as the scheduling RAT community of current UE, wherein, weight is suitable for dispatching the degree of the edge UE of current selected for characterizing candidate RAT community.
It is preferred that allocation unit 32 is during the candidate RAT community selected by current UE distribution is for scheduling RAT community, the method for estimation of weight at least includes:
The incidence relation between traffic performance and RAT characteristic according to default UE, traffic performance for current UE, estimate the priority of candidate RAT community corresponding to all RAT types that current UE is supported, according to the priority determined, in conjunction with parameters such as the corresponding channel quality of candidate RAT community, Radio Resource occupancies, determine the weight of each candidate RAT community in the candidate RAT community that all RAT types that current UE is supported are corresponding.
Preferably, a candidate RAT community is selected in the candidate RAT community that all RAT types supported in current UE based on default selection mode are corresponding, and for current UE distribution selected by candidate RAT community for scheduling RAT community time, allocation unit 32 specifically for:
Calculate the effective transmission capacity of each candidate RAT community in candidate RAT community corresponding to all RAT types that current UE is supported, select candidate RAT community that maximum effective transmission capacity is corresponding as the scheduling RAT community of current UE；
Wherein, effective transmission capacity refers to based on the UE transfer rate a candidate RAT community or/and channel quality, in conjunction with the bearing capacity of a candidate RAT community determined by the surplus yield of a candidate RAT community.
Based on above-described embodiment, refering to shown in Fig. 4, CRRM of the present invention includes:
Processor 400, for reading the program in memorizer 420, performs following process:
Priority is calculated respectively for each UE, and according to the priority calculating gained, all UE are ranked up, generate orderly UE queue, and travel through each UE in orderly UE queue, when selected current UE is edge UE in corresponding target candidate RAT community, determine whether that current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that allocation unit 32 is supported in current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by current UE distribution is scheduling RAT community.
Transceiver 410, for receiving and sending data under the control of processor 400.
Wherein, in the diagram, bus architecture can include that bus and the bridge of any number of interconnection, the various electrical chains of the memorizer that the one or more processors specifically represented by processor 400 and memorizer 420 represent are connected together.Other electrical chains various of such as ancillary equipment, manostat and management circuit or the like can also be connected together by bus architecture, and these are all to it is known in the art, therefore, are the most no longer described further it.EBI provides interface.Transceiver 410 can be multiple element, i.e. includes transmitter and transceiver, it is provided that for the unit communicated with other devices various over a transmission medium.Processor 400 is responsible for bus architecture and common process, and memorizer 420 can store the data that processor 400 is used when performing operation.
In sum, in the embodiment of the present invention, CRRM calculates priority respectively for each UE, according to the priority calculating gained, all UE are ranked up, after generating orderly UE queue, and travel through each UE in orderly UE queue, when selected current UE is edge UE in corresponding target candidate RAT community, determine whether that current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that then CRRM supports in current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by current UE distribution is scheduling RAT community.As such, it is possible to by simple implementation, reduce the mutual resource consumption between base station, by by UE coordinated scheduling to different RAT communities, being best suitable for the RAT community of scheduling for UE distribution, reduce or eliminate with the interference in standard network.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program.Therefore, the form of the embodiment in terms of the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware.And, the present invention can use the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is to describe with reference to method, equipment (system) and the flow chart of computer program according to embodiments of the present invention and/or block diagram.It should be understood that can be by the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces the manufacture including command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to perform sequence of operations step on computer or other programmable devices to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides the step of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame for realization.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and the modification spirit and scope without deviating from the embodiment of the present invention to the embodiment of the present invention.So, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (16)
1. the disturbance coordination method under a multi-mode networks, it is characterised in that including:
Common radio resource management CRRM calculates priority respectively for each user equipment (UE), and is ranked up by all UE according to the priority calculating gained, generates orderly UE queue；
CRRM travels through each UE in described orderly UE queue, when selected current UE is edge UE in corresponding target candidate wireless access technology RAT community, determine whether that described current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that CRRM supports in described current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by the distribution of described current UE is scheduling RAT community.
2. the method for claim 1, it is characterised in that before CRRM calculates priority respectively for each UE, farther include:
CRRM determines each UE positional information in corresponding candidate RAT community, and described positional information is UE or edge UE centered by one UE of instruction is in a corresponding candidate RAT community；
Wherein, often determine when a UE is edge UE in a corresponding candidate RAT community, edge UE for currently determining creates the list of corresponding interfered cell, all adjacent cells in the adjacent cell list of the candidate RAT community that the list of described interfered cell comprises described correspondence.
3. method as claimed in claim 2, it is characterised in that farther include:
Whenever for an edge UE distribution corresponding scheduling RAT community, the edge UE corresponding interfered cell list currently distributed is updated operation, and described renewal operation refers in the interfered cell list original for edge UE that the scheduling RAT community of the edge UE by described current distribution adds described current distribution to.
4. method as claimed in claim 2, it is characterised in that farther include:
During each UE in traveling through described orderly UE queue, whenever UE centered by selected current UE is in corresponding target candidate RAT community, then CRRM is directly that the corresponding target candidate RAT community of center UE distribution of current selected is for dispatching RAT community.
5. method as claimed in claim 3, it is characterised in that judge that described current UE is in the case of distributing corresponding target candidate RAT community, if the edge UE that scheduling RAT community is assigned is interfered, specifically includes:
Judge whether described current UE corresponding target candidate RAT community is present in the interfered cell list after any one edge UE that scheduling RAT community has been assigned updates, the most then judge that the edge UE that scheduling RAT community is assigned is interfered by described current UE.
6. the method as described in any one of claim 1-5, it is characterized in that, the candidate RAT community that all RAT types that CRRM supports in described current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by the distribution of described current UE is scheduling RAT community, specifically include:
Similar RAT set of cells based on the described current UE corresponding target candidate RAT community previously generated, judge that whether the edge UE of described current selected is the center UE of any one the candidate RAT community comprised in described similar RAT set of cells, wherein, the RAT characteristic related in described similar RAT set of cells is similar；
If it is determined that at least one candidate RAT community Zhong Shi center UE that described current UE comprises in described similar RAT set of cells, then at least one candidate RAT community described, any one candidate RAT community of selection is the scheduling RAT community of the edge UE of described current selected；
If it is determined that all candidate RAT communities of comprising in described similar RAT set of cells of described current UE are not center UE, then estimate the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding, select the highest candidate RAT community of weight as the scheduling RAT community of described current UE, wherein, described weight is for characterizing the degree that candidate RAT community is suitable for dispatching the edge UE of described current selected.
7. method as claimed in claim 6, it is characterised in that the method for estimation of described weight at least includes:
The incidence relation between traffic performance and RAT characteristic according to default UE, traffic performance for described current UE, estimate the priority of candidate RAT community corresponding to all RAT types that described current UE is supported, according to the priority determined, in conjunction with parameters such as the channel quality of candidate RAT community of described correspondence, Radio Resource occupancies, determine the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding.
8. the method as described in any one of claim 1-5, it is characterized in that, the candidate RAT community that all RAT types that CRRM supports in described current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by the distribution of described current UE is scheduling RAT community, specifically include:
Calculate the effective transmission capacity of each candidate RAT community in candidate RAT community corresponding to all RAT types that described current UE is supported, select candidate RAT community that maximum effective transmission capacity is corresponding as the scheduling RAT community of described current UE；
Wherein, described effective transmission capacity refers to based on the UE transfer rate a candidate RAT community or/and channel quality, in conjunction with the bearing capacity of one candidate RAT community determined by the surplus yield of one candidate RAT community.
9. the interference coordination device under a multi-mode networks, it is characterised in that including:
All UE for calculating priority respectively for each UE, and are ranked up according to the priority calculating gained, generate orderly UE queue by sequencing unit；
Allocation unit, for traveling through each UE in described orderly UE queue, when selected current UE is edge UE in corresponding target candidate RAT community, determine whether that described current UE is in the case of distributing corresponding target candidate RAT community, whether the edge UE that scheduling RAT community is assigned is interfered, if, the candidate RAT community that all RAT types that described allocation unit is supported in described current UE based on default selection mode are corresponding selects a candidate RAT community, and the candidate RAT community selected by the distribution of described current UE is scheduling RAT community.
10. device as claimed in claim 9, it is characterised in that before calculating priority respectively for each UE, farther include:
Pretreatment unit, for determining each UE positional information in corresponding candidate RAT community, described positional information is UE or edge UE centered by one UE of instruction is in a corresponding candidate RAT community；
Wherein, often determine when a UE is edge UE in a corresponding candidate RAT community, edge UE for currently determining creates the list of corresponding interfered cell, all adjacent cells in the adjacent cell list of the candidate RAT community that the list of described interfered cell comprises described correspondence.
11. devices as claimed in claim 10, it is characterised in that farther include:
Updating block, for whenever for an edge UE distribution corresponding scheduling RAT community, the edge UE corresponding interfered cell list currently distributed is updated operation, and described renewal operation refers in the interfered cell list original for edge UE that the scheduling RAT community of the edge UE by described current distribution adds described current distribution to.
12. devices as claimed in claim 10, it is characterised in that described allocation unit is further used for:
During each UE in traveling through described orderly UE queue, whenever UE centered by selected current UE is in corresponding target candidate RAT community, the most described allocation unit is directly that the center UE of current selected distributes corresponding target candidate RAT community for scheduling RAT community.
13. devices as claimed in claim 11, it is characterized in that, judging that described current UE is being distributed in the case of corresponding target candidate RAT community, if when the edge UE that scheduling RAT community is assigned is interfered, described allocation unit specifically for:
Judge whether described current UE corresponding target candidate RAT community is present in the interfered cell list after any one edge UE that scheduling RAT community has been assigned updates, the most then judge that the edge UE that scheduling RAT community is assigned is interfered by described current UE.
14. devices as described in any one of claim 9-13, it is characterized in that, a candidate RAT community is selected in the candidate RAT community that all RAT types supported in described current UE based on default selection mode are corresponding, and for described current UE distribution selected by candidate RAT community for scheduling RAT community time, described allocation unit specifically for:
Similar RAT set of cells based on the described current UE corresponding target candidate RAT community previously generated, judge that whether the edge UE of described current selected is the center UE of any one the candidate RAT community comprised in described similar RAT set of cells, wherein, the RAT characteristic related in described similar RAT set of cells is similar；
If it is determined that at least one candidate RAT community Zhong Shi center UE that described current UE comprises in described similar RAT set of cells, then at least one candidate RAT community described, any one candidate RAT community of selection is the scheduling RAT community of the edge UE of described current selected；
If it is determined that all candidate RAT communities of comprising in described similar RAT set of cells of described current UE are not center UE, then estimate the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding, select the highest candidate RAT community of weight as the scheduling RAT community of described current UE, wherein, described weight is for characterizing the degree that candidate RAT community is suitable for dispatching the edge UE of described current selected.
15. devices as claimed in claim 14, it is characterised in that described allocation unit is during the candidate RAT community selected by the distribution of described current UE is for scheduling RAT community, and the method for estimation of described weight at least includes:
The incidence relation between traffic performance and RAT characteristic according to default UE, traffic performance for described current UE, estimate the priority of candidate RAT community corresponding to all RAT types that described current UE is supported, according to the priority determined, in conjunction with parameters such as the channel quality of candidate RAT community of described correspondence, Radio Resource occupancies, determine the weight of each candidate RAT community in the candidate RAT community that all RAT types that described current UE is supported are corresponding.
16. devices as described in any one of claim 9-13, it is characterized in that, a candidate RAT community is selected in the candidate RAT community that all RAT types supported in described current UE based on default selection mode are corresponding, and for described current UE distribution selected by candidate RAT community for scheduling RAT community time, described allocation unit specifically for:
Calculate the effective transmission capacity of each candidate RAT community in candidate RAT community corresponding to all RAT types that described current UE is supported, select candidate RAT community that maximum effective transmission capacity is corresponding as the scheduling RAT community of described current UE；
Wherein, described effective transmission capacity refers to based on the UE transfer rate a candidate RAT community or/and channel quality, in conjunction with the bearing capacity of one candidate RAT community determined by the surplus yield of one candidate RAT community.
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