CN101917770B - Interference suppression method for home base station - Google Patents
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Abstract
The invention discloses an interference suppression method for a home base station, which automatically evades and reduces interference on an adjacent base station aiming at the scene of coexistence of a macro base station and the home base station. The method comprises the following steps that: during the initialized resource configuration, the home base station acquires the resource use information of a neighboring cell from the internet management, performs initializtion configuration on a resource priority list, and monitors the surrounding wireless environment to acquire an interference cell list and the potential interference resource information and configure the resource priority list in turn; the home base station distributes grades to all users according to the user parameters and the resource priority list, sorts all service users according to a pre-set scheduling rule and generates a user priority list; and the home base station selects the users in turn according to the order in the user priority list and distributes resources to the users so that high-priority resources are preferentially distributed to the high-grade users.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of disturbance restraining method of Home eNodeB.
Background technology
Home eNodeB (Femtocell) is a kind of subminiaturized mobile base station, can directly be placed in the user family or in the office, and as mobile network's extension or the fixing effective scheme of Mobile Convergence, covers for the user provides seamless indoor high-speed.
Concrete, because Home eNodeB has the advantages such as volume is little, cost is low, easy for installation, so that Home eNodeB is in widespread attention in 3G (3Generation, 3-G (Generation Three mobile communication system)), and will in next generation mobile communication system IMT-Advanced, be widely used.
When indoor high-quality service is provided, a large amount of deployment of Home eNodeB will have a negative impact to network performance.At first, in the application scenarios of family's base station cell and macrocellular coexistence, the Home eNodeB honeycomb may produce co-channel interference to outdoor macro honeycomb, and reduces the capacity of macrocellular; Secondly, also can produce mutual interference between the Home eNodeB of a plurality of placed adjacent.
In addition, above-mentioned interference also will increase gradually along with the increase of following Home eNodeB deployment density, if deal with improperly, will cause macro base station user and Home eNodeB user, Home eNodeB user and macrocell user, or even the severe jamming between Home eNodeB user and the Home eNodeB user.As shown in Figure 1, disturb schematic diagram for the intersection between a kind of Home eNodeB honeycomb and the macrocellular.
In the prior art, in order to reduce the artificial participation of the network planning and network management, reduce networking and maintenance cost, require Home eNodeB to possess the function of automatic configuration and Automatic Optimal.Wherein, configuration refers to Home eNodeB support plug and play (Plug-and-Play) automatically, but does not need the user to participate in initialized configuration; Automatic majorization function refers to that Home eNodeB passes through the periodically variation of monitoring network performance index, selects or adjust relevant parameter and the strategy of base station, adaptively to reach the purpose of reduce disturbance and optimized network performance.
Automatic configuration and the automatic majorization function process of Home eNodeB comprise: (1) Home eNodeB is finished automatic layoutprocedure after starting, automatic acquisition IP address, webmaster OAM (OperationAdministration and Maintenance from the IP backhaul network, Operations, Administration and Maintenance) address etc., and finish base station authentication, set up the webmaster association, download and installation and operation software, download initial radio frequency from webmaster and be connected, set up the S1 interface with transformation parameter and connect that connection is connected a series of initialization operations with X2 interface from webmaster.(2) Home eNodeB is finished automatic majorization function in normal course of operation, and namely Home eNodeB selects or adjust relevant parameter and the strategy of base station adaptively by the periodically variation of monitoring network performance index.
But in realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Although automatically the allocation and optimization technology can provide dependable implementation framework for solving the interference problem that above-mentioned Home eNodeB causes, do not propose to reduce Home eNodeB to the solution of the interference of wireless environment on every side in the prior art.
Summary of the invention
The interference that adjacent base station in the network is caused the invention provides a kind of disturbance restraining method of Home eNodeB, so that can automatically be evaded and reduce to Home eNodeB when Resources allocation.
In order to achieve the above object, the invention provides a kind of disturbance restraining method of Home eNodeB, Home eNodeB obtains the resource using information of neighbor cell from webmaster in initialized resource distribution process, carry out the initial configuration of resource prioritization tabulation, the method further comprises:
Home eNodeB obtains interfered cell tabulation and potential interference resource information, and according to described interfered cell tabulation and potential interference resource information resource allocation priority list;
Described Home eNodeB is all service-user allocation level according to customer parameter and the tabulation of described resource prioritization, and according to default dispatching criterion all service-users is sorted, and generates the User Priority tabulation;
Described Home eNodeB is selected service-user successively according to the order in the described User Priority tabulation, and is the activation of service user resource allocation according to grade and the tabulation of described resource prioritization of the service-user of selecting.
Described Home eNodeB obtains the interfered cell tabulation, specifically comprises:
The information of neighbor cell in the wireless environment around the monitoring of described Home eNodeB, and determine pilot power and the cell type of each neighbor cell according to monitoring result; Wherein, the information of neighbor cell comprises one or more in the following content: common broadcast channel, synchronizing channel, pilot signal;
Described Home eNodeB is divided into macrocell and home base station cells with the residential quarter that pilot power surpasses default thresholding according to cell type, and is that macrocell and cell type are to sort in each residential quarter of home base station cells according to pilot power with cell type;
Described Home eNodeB obtains the interfered cell tabulation that comprises macrocell tabulation and home base station cells tabulation according to ranking results.
Described potential interference resource information comprises the resource sequence number of potential interference resource;
Described Home eNodeB obtains the potential interference resource information, specifically comprises:
Described Home eNodeB sends the solicited message of obtaining the potential interference resource to each base station in the described interfered cell tabulation;
The potential interference resource information is determined in each base station in the described interfered cell tabulation, and described potential interference resource information is sent to described Home eNodeB;
Described Home eNodeB receives the described potential interference resource information that each base station in the described interfered cell tabulation is returned.
Comprise in the described resource prioritization tabulation: an isopreference level resource, two isopreference level resources and three isopreference level resources, and all resources sort according to priority in the same grade;
According to described interfered cell tabulation and potential interference resource information resource allocation priority list, specifically comprise:
The resource distribution that described Home eNodeB returns each base station during interfered cell is tabulated to the potential interference resource information is an isopreference level resource; The resource distribution of Home eNodeB in the interfered cell tabulation being returned the potential interference resource information is two isopreference level resources; The resource distribution of macrocell in the interfered cell tabulation being returned the potential interference resource information is three isopreference level resources.
Described customer parameter comprises one or more in the following content: transmission rate, time delay, QoS demand;
Described Home eNodeB is all service-user allocation level according to customer parameter and the tabulation of described resource prioritization, specifically comprises:
Described Home eNodeB is determined the number of users of corresponding the first estate according to an isopreference level resource, and to select the service-user corresponding to number of users of this first estate according to customer parameter from all service-users be the first estate; Determine the number of users of corresponding the second grade according to two isopreference level resources, and be the second grade according to selecting the service-user corresponding to number of users of this second grade customer parameter other service-users outside the first estate service-user; And to select other service-users outside the first estate service-user, the second grade service user be the tertiary gradient.
The grade of described service-user according to selecting and the tabulation of described resource prioritization are the activation of service user resource allocation, specifically comprise:
When the grade of the service-user of selecting was the first estate, described Home eNodeB judged in the isopreference level resource whether surplus resources is arranged; If have, then the resource sequence according to an isopreference level resource is the activation of service user resource allocation; If no, then the activation of service user is placed in the alternative table of user;
When the grade of the service-user of selecting was the second grade, described Home eNodeB judged in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the activation of service user resource allocation; If no, then the activation of service user is placed in the alternative table of user;
When the grade of the service-user of selecting was the tertiary gradient, described Home eNodeB judged in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation; If no, then the activation of service user is placed in the alternative table of user;
After service-user in selecting successively described User Priority tabulation is finished, whether described Home eNodeB is judged in the alternative table of described user is empty, if not, described Home eNodeB judges in the described resource prioritization tabulation whether surplus resources is arranged, if, described Home eNodeB sorts to service-user according to the grade of service-user in the alternative table of described user, and is the service-user Resources allocation after sorting according to the resource sequence in the resource prioritization tabulation.
The grade of described service-user according to selecting and the tabulation of described resource prioritization are the activation of service user resource allocation, specifically comprise:
When the grade of the service-user of selecting was the first estate, described Home eNodeB judged in the isopreference level resource whether surplus resources is arranged; If have, then the resource sequence according to an isopreference level resource is the activation of service user resource allocation; If no, judge then in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the activation of service user resource allocation; If no, judge then in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation;
When the grade of the service-user of selecting was the second grade, described Home eNodeB judged in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the activation of service user resource allocation; If no, judge then in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation;
When the grade of the service-user of selecting was the tertiary gradient, described Home eNodeB judged in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation.
Compared with prior art, the embodiment of the invention has the following advantages at least:
For the application scenarios of macro base station and Home eNodeB coexistence, the interference that adjacent base station in the network is caused can automatically be evaded and reduce to Home eNodeB, and improve the communication quality of service-user under the Home eNodeB.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that the intersection between Home eNodeB honeycomb and the macrocellular is disturbed schematic diagram in the prior art;
Fig. 2 is the disturbance restraining method flow chart of a kind of Home eNodeB of proposition in the embodiment of the invention one;
Fig. 3 is the disturbance restraining method flow chart of a kind of Home eNodeB of proposition in the embodiment of the invention two;
Fig. 4 is interfered cell tabulation in the embodiment of the invention;
Fig. 5 is to be the schematic diagram of Three Estate with the potential interference resource division in the embodiment of the invention;
Fig. 6 A and Fig. 6 B are network environment scene schematic diagrames in the embodiment of the invention;
Fig. 7 is the schematic diagram of resource prioritization list configuration in the embodiment of the invention;
Fig. 8 is the schematic diagram of the User Priority tabulation in the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is embodiment of the invention part embodiment, rather than whole embodiment.Based on the embodiment in the embodiment of the invention, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of embodiment of the invention protection.
As shown in Figure 2, a kind of disturbance restraining method of Home eNodeB has been proposed in the embodiment of the invention one, Home eNodeB is in initialized resource distribution process, obtain the resource using information of neighbor cell from webmaster, carry out the initial configuration of resource prioritization tabulation, the method further may further comprise the steps:
The technical scheme that provides in order more clearly to set forth the embodiment of the invention, the present invention is described in detail below in conjunction with specific embodiment.The disturbance restraining method of the Home eNodeB that the embodiment of the invention proposes can be applicable to the IMT-Advanced system and the resource of Home eNodeB is distributed is configured and optimizes, and also can be applicable to the communication system that other use Home eNodeB, in this no longer in detail explanation.
As shown in Figure 3, proposed a kind of disturbance restraining method of Home eNodeB in the embodiment of the invention two, may further comprise the steps:
Concrete, the initial configuration process of this resource prioritization tabulation is: webmaster provides the in the recent period sequence number of the frequent resource of using of peripheral cell (for example, macrocell on every side, the home base station cells around perhaps) to Home eNodeB; Home eNodeB is made as low priority with the frequent resource of using in above-mentioned residential quarter, and the residual frequency resource in the system transmission bandwidth is made as high priority, to finish the initialization procedure of resource prioritization tabulation.
Concrete, Home eNodeB (being HNB) is by the wireless environment around detecting, adjacent base station in the wireless environment is measured, then can record according to measurement result pilot power and the cell type of each base station, and generate the interfered cell tabulation according to pilot power and the cell type of each adjacent base station.
Further, Home eNodeB sends the request of obtaining the potential interference resource information by each base station in the interfered cell tabulation, return the potential interference resource information by each base station in the interfered cell tabulation, the potential interference resource information resource allocation priority list that each base station during then Home eNodeB can be tabulated according to interfered cell tabulation and interfered cell is returned.
Need to prove, in the embodiment of the invention, be not limited to according to interfered cell tabulation and potential interference resource information resource allocation priority list.
For example, in actual applications, Home eNodeB obtains interfered cell tabulation and potential interference resource information, and before the step according to interfered cell tabulation and potential interference resource information resource allocation priority list, Home eNodeB the startup stage carry out in the initialized resource distribution process, Home eNodeB can obtain from webmaster the resource using information of neighbor cell, and carries out the initial configuration of resource prioritization tabulation according to the resource using information of above-mentioned neighbor cell.Behind above-mentioned initialization procedure, namely can determine initialized resource prioritization tabulation, if in subsequent step 301, Home eNodeB obtains according to interfered cell tabulation and potential interference resource information resource allocation priority list and goes wrong, then can use initialized resource prioritization tabulation to carry out follow-up processing procedure, repeat no more in the embodiment of the invention, obtain according to interfered cell tabulation and potential interference resource information resource allocation priority list take Home eNodeB and describe as example.
For the Home eNodeB of more clearly setting forth this step obtains interfered cell tabulation and potential interference resource information, and according to the operating process of interfered cell tabulation and potential interference resource information resource allocation priority list, be further detailed below in conjunction with step 3011-step 3016.
Home eNodeB need to be monitored the information of neighbor cell in the wireless environment on every side, and determines pilot power and the cell type of each neighbor cell according to monitoring result; Wherein, the information of neighbor cell includes but not limited to one or more in the following content: common broadcast channel, synchronizing channel, pilot signal.
Concrete, Home eNodeB is by monitoring common broadcast channel, synchronizing channel and the pilot signal etc. of neighbor cell in the wireless environment on every side, can obtain the pilot power of each neighbor cell and record the pilot power of each neighbor cell.
In addition, Home eNodeB is by monitoring common broadcast channel, synchronizing channel and the pilot signal etc. of neighbor cell in the wireless environment on every side, can obtain the relevant information such as cell id, cell type (macrocell or Home eNodeB) of each neighbor cell.
Concrete, interfered cell tabulation as shown in Figure 4, Home eNodeB is divided into macrocell and home base station cells with the residential quarter that pilot power surpasses default thresholding according to cell type, and be to sort in each residential quarter of macrocell according to pilot power with cell type, be to sort in each residential quarter of home base station cells according to pilot power with cell type; Home eNodeB obtains the interfered cell tabulation that comprises macrocell tabulation and home base station cells tabulation according to ranking results.
Further, Home eNodeB can surpass default thresholding (wherein with pilot power first, default thresholding initial value can be obtained by webmaster by Home eNodeB, after Home eNodeB enters normal operation, adjust and arrange according to systematic function and working order by Home eNodeB) neighbor cell be divided into macrocell and two groups of home base station cells according to cell type, sorted according to pilot power in a plurality of residential quarters in the corresponding group of macrocell afterwards, and a plurality of residential quarters in the home base station cells group are sorted according to pilot power, according to ranking results, namely can get access to the interfered cell tabulation that comprises macrocell tabulation and home base station cells tabulation.
In addition, Home eNodeB can also sort pilot power first above the pilot power of the neighbor cell of presetting thresholding according to each residential quarter, then the residential quarter after will sorting is divided into macrocell and two groups of home base station cells according to cell type, namely can get access to the interfered cell tabulation that comprises macrocell tabulation and home base station cells tabulation.
Wherein, Home eNodeB can send the request of obtaining the potential interference resource to each base station in the interfered cell tabulation while, and each base station in also can tabulating to interfered cell successively according to order in the interfered cell tabulation sends the request of obtaining the potential interference resource.
Wherein, this potential interference resource information includes but not limited to the resource sequence number of this potential interference resource, for convenience of description, describes as an example of the resource sequence number of potential interference resource example in the embodiment of the invention.
After each base station in the interfered cell tabulation receives the request of Home eNodeB, to determine to cause according to this residential quarter (being a residential quarter in the interfered cell tabulation) current resource operating position and the relevant informations such as position of Home eNodeB the resource (being called the potential interference resource) of phase mutual interference, and the resource sequence number that the potential interference resource is corresponding sends to Home eNodeB.
Concrete, the resource that this residential quarter is being used or frequently used in the recent period if Home eNodeB also uses these resources, causes comparatively serious mutual interference possibly, so this residential quarter needs to classify this resource as the potential interference resource, and the resource sequence number information of correspondence is returned to Home eNodeB.
In addition, if Home eNodeB is apart from the close together of this residential quarter, resource for these all uses of residential quarter, if the user of Home eNodeB also uses these resources, then the user of this residential quarter and Home eNodeB user will cause mutually interference, therefore in the situation of Home eNodeB and this residential quarter close together, this residential quarter can be defined as the resource of these all uses of residential quarter the potential interference resource, and the resource sequence number of correspondence is returned to Home eNodeB.
Certainly, in the practical application, be not limited to aforesaid way and determine the potential interference resource information, also can adopt as the case may be additive method that definite principle of potential interference resource is preset, give unnecessary details no longer in detail at this.
The resource sequence number of the potential interference resource that each base station during step 3015, Home eNodeB receive and the record interfered cell is tabulated is returned.
The resource sequence number resource allocation priority list of the potential interference resource that each base station during step 3016, Home eNodeB are tabulated according to interfered cell and interfered cell is tabulated is returned.
Wherein, the process of resource allocation priority list comprises, all resources is pressed certain regular partition grade, and in same grade all resources are carried out prioritization.Certainly, in actual applications, also all resources can be carried out prioritization, and according to the prioritization result all resources be pressed certain regular partition grade, the resource in each grade is according to prioritization.
In an embodiment of the present invention, the resource in this resource prioritization tabulation can be according to potential interference resource corresponding to Home eNodeB, and potential interference resource and other resource division that macrocell is corresponding are Three Estate.As shown in Figure 5, at this moment, resource prioritization tabulation is divided into an isopreference level resource, two isopreference level resources and three isopreference level resources, and wherein the resource in the ad eundem is according to from high to low arranged sequentially of priority.Be to comprise in the resource prioritization tabulation: an isopreference level resource, two isopreference level resources and three isopreference level resources, and all resources sort according to priority in the same grade.
In other embodiments of the embodiment of the invention, also can resource prioritization be tabulated according to other rules and be divided into the grade of different numbers, and the division methods of the Three Estate that is not limited only to provide in the embodiment of the invention is given unnecessary details no longer in detail at this.
In this step, according to interfered cell tabulation and potential interference resource information resource allocation priority list, specifically comprise: the Home eNodeB resource distribution of returning the potential interference resource information of each base station in the interfered cell tabulation is an isopreference level resource during resource prioritization is tabulated; The resource distribution that Home eNodeB returns the Home eNodeB in the interfered cell tabulation to the potential interference resource information is two isopreference level resources in the resource prioritization tabulation; The resource distribution that Home eNodeB returns the macrocell in the interfered cell tabulation to the potential interference resource information is three isopreference level resources in the resource prioritization tabulation.
Need to prove, to divide Three Estate as example, the resource prioritization list configuration method that the embodiment of the invention adopts is: first all resources are pressed certain regular partition grade, then according to interfered cell tabulation and relevant information the resource in the same grade is carried out prioritization, this relevant information includes but not limited to the pilot power that the base station is corresponding, and concrete division methods includes but not limited to following mode:
(a) all resources are arranged rule according to grade and carry out the grade configuration, being about to all resource division is an isopreference level resource, two isopreference level resources and three isopreference level resources, be specially: the resource that configuration does not appear in the potential interference resource of returning any base station is an isopreference level resource, the potential interference resource that Home eNodeB returns in the tabulation of configuration interfered cell is two isopreference level resources, and the potential interference resource that macrocell returns in the tabulation of configuration interfered cell is three isopreference level resources.
(b) resource in the same grade is carried out prioritization.
One isopreference level resource is carried out the prioritization configuration, and the pilot power of the base station that resource is corresponding is stronger, and the priority of corresponding resource in the resource prioritization tabulation is higher;
Two isopreference level resources are carried out the prioritization configuration, wherein the position of Home eNodeB corresponding to resource in the interfered cell tabulation is more forward, the pilot power that is Home eNodeB corresponding to resource is higher, and the priority of corresponding resource in the resource prioritization tabulation is lower;
Three isopreference level resources are carried out the prioritization configuration, and wherein the rank of macrocell in the interfered cell tabulation is more forward, and the priority of corresponding resource is lower.
Wherein, the configuration sequence of above-mentioned priority resources at different levels can be selected arbitrarily, does not repeat them here.
Wherein, this customer parameter includes but not limited to transmission rate, time delay, QoS (Quality of Service, service quality) demand etc.
In this step, Home eNodeB is all service-user allocation level according to customer parameter and resource prioritization tabulation, specifically comprises:
Home eNodeB is determined the number of users of corresponding the first estate according to the isopreference level resource in the resource prioritization tabulation, and to select the service-user corresponding to number of users of this first estate according to customer parameter from all service-users be the first estate (high-grade); For example, when an isopreference level resource can be distributed to 3 users simultaneously, the number of users of then determining corresponding the first estate is 3, and need to select 3 users to be the first estate (for example, selecting 3 the highest users of QoS demand is the first estate) according to customer parameter.
Home eNodeB is determined the number of users of corresponding the second grade according to two isopreference level resources in the resource prioritization tabulation, and is the second grade (middle grade) according to selecting the service-user corresponding to number of users of this second grade customer parameter other service-users outside the first estate service-user; For example, when two isopreference level resources can be distributed to 4 users simultaneously, the number of users of then determining corresponding the second grade is 4, and need to select 4 users according to customer parameter be the second grade (user who for example, selects the QoS demand to come 4-7 is the second grade).
It is the tertiary gradient that Home eNodeB is selected other service-users outside the first estate service-user, the second grade service user.
In summary it can be seen that in an embodiment of the present invention, customer parameter is set to transmission rate and the time delay in the QoS demand, User Priority tabulation is Three Estate according to high-grade, middle grade and three category division of inferior grade.Concrete, Home eNodeB statistics Home eNodeB user's transmission rate and time delay, transmission rate and time delay according to the user, all users are divided into high-grade, middle grade and inferior grade Three Estate, wherein, the transmission rate of user's request is higher, and delay requirement is less, and corresponding user gradation is higher.In other embodiments of the embodiment of the invention, also can the user be divided into the grade of different numbers according to other strategies, and the division methods of the Three Estate that is not limited only to provide in the embodiment of the invention.
Further, when the user being carried out after grade classification finishes, Home eNodeB also needs according to default dispatching criterion all service-users to be sorted, and generates the User Priority tabulation.Wherein, this default scheduling standard includes but not limited to: polling dispatching, direct ratio equity dispatching or other dispatching criterions.
For example, 5 users are arranged under the Home eNodeB, be respectively user 1, user 2, user 3, user 4, user 5, according to each user's customer parameter, and the priority resource of each grade, the user who determines the first estate is user 2, the user who determines the second grade is user 4 and user 5, and the user who determines the tertiary gradient is user 1 and user 3.User's hectare order in the User Priority tabulation that generates according to the principle of polling dispatching is user 1, user 2, user 3, user 4, user 5.
In the grade and the embodiment of resource prioritization tabulation for the service-user Resources allocation of selection of Home eNodeB according to the service-user of selecting, may further comprise the steps:
When the grade of the service-user of selecting was the first estate, Home eNodeB judged in the resource prioritization tabulation in the isopreference level resource whether surplus resources is arranged; If have, then the resource sequence according to an isopreference level resource is the service-user Resources allocation of this selection; If the service-user that no, then will select is placed in the alternative table of user;
When the grade of the service-user of selecting was the second grade, Home eNodeB judged in the resource prioritization tabulation in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the service-user Resources allocation of this selection; If the service-user that no, then will select is placed in the alternative table of user;
When the grade of the service-user of selecting was the tertiary gradient, Home eNodeB judged in the resource prioritization tabulation in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the service-user Resources allocation of this selection; If the service-user that no, then will select is placed in the alternative table of user;
After service-user in selecting successively the User Priority tabulation was finished, whether Home eNodeB is judged in the alternative table of user was empty, if be sky, then process ends; If be not empty, Home eNodeB judges whether resource prioritization has surplus resources in tabulating, if there is not surplus resources, and process ends then; If surplus resources is arranged, Home eNodeB sorts to service-user according to the grade of service-user in the alternative table of user, and is the service-user Resources allocation after sorting according to the resource sequence in the resource prioritization tabulation.For example, grade according to service-user in the alternative table of user is user 1 (the second grade), user 2 (tertiary gradient) to the result that service-user sorts, resource sequence in the resource prioritization tabulation is resource 1 and resource 2, then need resource 1 is distributed to user 1, resource 2 is distributed to user 2.
User in the User Priority tabulation is sequentially as user 1, user 2, user 3, user 4, user 5, and the user of the first estate is that the user of user's 2, the second grades is user 4 and user 5, and the user of the tertiary gradient is user 1 and user 3; An isopreference level resource is that resource 6, two isopreference level resources are that resource 8 and resource 5, three isopreference level resources are resource 13 and resource 9 in the resource prioritization tabulation.
Home eNodeB is selected the service-user 1 in the User Priority tabulation successively, determines that user 1 grade is the tertiary gradient, judges in the resource prioritization tabulation in the three isopreference level resources whether surplus resources is arranged; Have resource 13 and resource 9 this moment, and then the resource sequence according to three isopreference level resources is this user's 1 Resources allocation 13.
Select the service-user 2 in the User Priority tabulation, determine that user 2 grade is the first estate, judge in the resource prioritization tabulation in the isopreference level resource whether surplus resources is arranged; Have resource 6 this moment, and then the resource sequence according to an isopreference level resource is these user's 2 Resources allocation 6.
By that analogy, then can be for user's 1 Resources allocation 13, be user's 2 Resources allocation 6, for user's 3 Resources allocation 9, for user's 4 Resources allocation 8, for user's 5 Resources allocation 5, give unnecessary details no longer in detail at this.
In the grade and resource prioritization tabulation another embodiment for the service-user Resources allocation of selection of Home eNodeB according to the service-user of selecting, may further comprise the steps:
When the grade of the service-user of selecting was the first estate, described Home eNodeB judged in the described resource prioritization tabulation in the isopreference level resource whether surplus resources is arranged; If have, then the resource sequence according to an isopreference level resource is the service-user Resources allocation of this selection; If no, described Home eNodeB judges in the described resource prioritization tabulation in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the service-user Resources allocation of this selection; If no, described Home eNodeB judges in the described resource prioritization tabulation in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the service-user Resources allocation of this selection;
When the grade of the service-user of selecting was the second grade, described Home eNodeB judged in the described resource prioritization tabulation in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the service-user Resources allocation of this selection; If no, described Home eNodeB judges in the described resource prioritization tabulation in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the service-user Resources allocation of this selection;
When the grade of the service-user of selecting was the tertiary gradient, described Home eNodeB judged in the described resource prioritization tabulation in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the service-user Resources allocation of this selection.
The below provides a specific embodiment of the present invention, Fig. 6 A is the network environment shown in the specific embodiment schematic diagram, macrocell 1 is arranged in the network environment, with macrocell 2, Home eNodeB 1, Home eNodeB 2, Home eNodeB 3, Home eNodeB 4 and target Home eNodeB are divided into central area and two zones of fringe region according to residential quarter inner and outer ring boundary macrocell, wherein, residential quarter inner and outer ring boundary is defined by macro cell base station oneself, be used for weighing the far and near degree between Home eNodeB and the macro cell base station, in the present embodiment, the target Home eNodeB is positioned at the central area of macrocell 1, the position of other Home eNodeB is as shown in Fig. 6 A, at target Home eNodeB normal operating phase, the Home eNodeB resource allocation method in then according to the present invention, the flow process that described target Home eNodeB carries out resource distribution is as follows:
(1) the target Home eNodeB generates the interfered cell tabulation: after the target Home eNodeB normally starts operation, wireless environment around the monitoring of target Home eNodeB, know cell id, cell type and other essential informations of neighbor cell, the power of measuring and record the neighbor cell pilot signal is as follows: (10dBm), (5dBm), (30dBm), Home eNodeB 4 (50dBm) for Home eNodeB 3 for Home eNodeB 2 for macrocell 1 (20dBm), macrocell 2 (5dBm), Home eNodeB 1.Suppose that if the default pilot threshold of target Home eNodeB is-40dBm, then except Home eNodeB 4, other neighbor cells all will be put into the interfered cell tabulation.The neighbor cell that pilot signal power is surpassed pilot threshold sorts respectively according to the classification of adjacent macro cell and adjacent Home eNodeB, the ordering foundation be pilot signal power by by force to a little less than, then the tabulation of the interfered cell after the ordering is shown in 5, wherein, have macro cell base station to be followed successively by: macrocell 1, macrocell 2, Home eNodeB is followed successively by: Home eNodeB 2, Home eNodeB 1, Home eNodeB 3.
(2) the target Home eNodeB obtains the sequence number of potential interference resource: the target Home eNodeB sends request to the interfered cell in the above-mentioned interfered cell tabulation, interfered cell in the described interfered cell tabulation receives after the described request, the resource operating position current according to this residential quarter, and the far and near relation in the position of Home eNodeB and this residential quarter, determine the sequence number of potential interference resource, and the sequence number of described potential interference resource is sent to affiliated target Home eNodeB.
Macrocell 1 how to confirm potential interference resource at first is described as an example of macrocell 1 example, the target Home eNodeB is positioned at the central area of macrocell 1, using or the recent frequent resource of using near macrocell 1 user the target Home eNodeB, if the target Home eNodeB also uses these resources, possibly comparatively serious descending interference is caused in the user of macrocell 1; Simultaneously, consider and adopt after the downlink power control, macrocell 1 gives the power of distant place edge customer transmitted signal larger, edge customer for macrocell 1 is using or the recent frequent resource of using, if the target Home eNodeB uses these resources, also can cause comparatively serious descending interference to these edge customers.Therefore, macrocell 1 determines that potential jamming resource is near the resource that macrocell 1 user, macrocell 1 edge customer the target Home eNodeB are using or frequently using in the recent period.
In the present embodiment, the target Home eNodeB is positioned at outside the overlay area of macrocell 2, and macrocell 2 determines that macrocell 2 edge customers are using or the recent resource of frequently using is the potential interference resource.
Home eNodeB 2, Home eNodeB 1 and Home eNodeB 3 area coverages are less, number of users is less, thus Home eNodeB 2, Home eNodeB 1 and Home eNodeB 3 can use current all service-users in this residential quarter or in the recent period the frequent resource of using as the potential interference resource.
(3) the target Home eNodeB carries out the configuration of resource prioritization tabulation: the sequence number of the potential interference resource that the base station during the target Home eNodeB is tabulated according to interfered cell and interfered cell is tabulated is returned, carry out the resource prioritization list configuration, wherein: three isopreference level resources are the potential interference resource that macrocell returns in the interfered cell tabulation, because the pilot power of the pilot to powerratio macrocell 2 of macrocell 1 is strong in the interfered cell tabulation, therefore the priority corresponding to potential interference resource of macrocell 2 is higher than the potential interference resource of macrocell 1 in the third-class resource of priority list, three isopreference level resources in the resource allocation priority list are followed successively by: the potential interference resource of macrocell 2, the potential interference resource of macrocell 1; Two isopreference level resources are the potential interference resource that Home eNodeB returns in the interfered cell tabulation, in like manner, the strong and weak rank of pilot power in conjunction with Home eNodeB in the corresponding interfered cell tabulation, resource in the two isopreference level resources is further sorted, and two isopreference level resources in the resource allocation priority list are followed successively by: the potential interference resource of the potential interference resource of Home eNodeB 2, the potential interference resource of Home eNodeB 1 and Home eNodeB 3; One isopreference level resource is the surplus resources of system transmissions speed except second-class and three isopreference level resources.One isopreference level resource is carried out prioritization according to the pilot signal power of resource respective base station, and the pilot signal power of the base station that resource is corresponding is stronger, and this resource prioritization is higher.The resource prioritization tabulation that configures by above process is as shown in Figure 7: from left to right for resource prioritization successively from high to low.Except the information according to interfered cell tabulation is carried out prioritization to the potential interference resource of same grade, also can sort according to other default methods, such as sorting according to the channel conditions of each user on each resource etc.
(4) the target Home eNodeB generates the User Priority tabulation: transmission rate and the delay requirement of the Home eNodeB statistics service-user that remains are divided into high, medium and low Three Estate according to above-mentioned information with each user.
The target Home eNodeB is as follows with the process that each user is divided into high, medium and low Three Estate: at first, the preliminary estimation of how much making to the resource in the resource prioritization tabulation, for example, in the present embodiment, resource prioritization tabulation estimation is obtained an isopreference level resource can be for 2 users, two isopreference level resources can be for 5 users, and three isopreference level resources can be for 2 users.The hypothetical target Home eNodeB has U1, ten users of U2...U10, each user is being divided into height, in, in the process of low Three Estate, in each grade the concrete number of user by above-mentioned to resource what estimation determine, according to above-mentioned estimation to resource in the resource prioritization tabulation, dividing 2 users is high priority, and 5 users are medium priority, and other are low priority, the transmission rate of the statistics service-user that remains, delay requirement, according to the number of user in above-mentioned information and each grade, the result who divides at last is: U1, U2 are high priority, U3, U4, U6, U9, U10 is medium priority, U7, U8 and U5 are low priority, and the User Priority tabulation of generation as shown in Figure 8.The present embodiment employing as the foundation of determining user gradation, also can adopt other default methods as the foundation of determining user gradations according to system requirements with transmission rate, time delay.
(5) the target Home eNodeB carries out the distribution of user resources: be resource in the user resource allocation priority list according to predetermined dispatching criterion, default dispatching criterion can be polling dispatching, direct ratio equity dispatching or other dispatching criterions.The dispatching criterion that present embodiment adopts polling dispatching to divide as User Priority, assigning process is as follows:
For user U1 distributes resource in the isopreference level resource, after user U1 distributes end, for user U2 distributes resource in the two isopreference level resources, then distribute resource in the three isopreference level resources for user U3, be followed successively by the resource that U4-U7 distributes corresponding priority, in the time of for user U8 distribution services, because three isopreference level resources are enough two users' uses only, user U3 and U7 have been distributed to, therefore U8 is added in the alternative table of access customer, continue as the service that user U9 distributes corresponding priority, in the time of for user U10 distribution services, although the result of two isopreference level resource estimations is for can be for 5 users provide service, in the real resource assigning process, front 4 middle grade users are entirely occupied with the resource in the two isopreference level resources, so U10 also is added in the alternative table of user.At this moment, determine whether also have surplus resources in the resource prioritization tabulation, the whole resources in the resource prioritization tabulation assign, this assigning process finishes.
In one embodiment of the invention, the target Home eNodeB has ten users of U1-U10, the resource prioritization list configuration as shown in Figure 7, wherein, one isopreference level resource can be for 2 users, two isopreference level resources can be for 5 users, and three isopreference level resources can be for 2 users, and User Priority is tabulated as shown in Figure 8.The interference process of inhibition that carries out Home eNodeB for the user is as follows:
For user U1 distributes resource in the isopreference level resource, after user U1 distributes end, for user U2 distributes resource in the two isopreference level resources, then distribute resource in the three isopreference level resources for user U3, be followed successively by the resource that U4-U7 distributes corresponding priority, in the time of for user U8 distribution services, because three isopreference level resources are enough two users' uses only, user U3 and U7 have been distributed to, therefore U8 is added in the alternative table of access customer, continue as the service that user U9 distributes corresponding priority, in the time of for user U10 distribution services, although the result of two isopreference level resource estimations is for can be for 5 users provide service, in the real resource assigning process, front 4 middle grade users are entirely occupied with the resource in the two isopreference level resources, so U10 also is added in the alternative table of user.At this moment, determine whether also have surplus resources in the resource prioritization tabulation, although suppose that an isopreference level resource estimation result is for providing service for 2 users, but in the real resource assigning process, resource in the one isopreference level resource is that two user assignments also have residue afterwards, can continue as a user service is provided.Have U8 in the user alternative table this moment, two users of U10, and with the user U8 in the alternative table of user, the result of U10 ordering is U10 according to user gradation, U8, therefore, for user U10 provides surplus resources in the isopreference level resource.At this moment, the whole resources in the resource prioritization tabulation assign, and this assigning process finishes.
In one embodiment of the invention, shown in Fig. 6 B, macrocell 1 is arranged in the network environment, with macrocell 2, Home eNodeB 1, Home eNodeB 2, Home eNodeB 3, Home eNodeB 4 and target Home eNodeB, the target Home eNodeB is positioned at the fringe region of macrocell 1, the position of other Home eNodeB is shown in Fig. 6 B, Home eNodeB resource allocation method in then according to the present invention, the target Home eNodeB generates the interfered cell tabulation, comprising macrocell 1, macrocell 1 receives after the request of potential interference resource, the resource operating position current according to this residential quarter, and the far and near relation in the position of Home eNodeB and this residential quarter, determine the sequence number of potential interference resource, the target Home eNodeB is positioned at the fringe region of macrocell 1, in this case, is using or the recent frequent resource of using near macrocell 1 user the target Home eNodeB, if the target Home eNodeB also uses these resources, possibly the user of macrocell 1 caused comparatively serious descending interference, therefore, macrocell 1 determines that potential jamming resource is the resource that near macrocell 1 user the target Home eNodeB is using or frequently using in the recent period.
In sum, the present invention has considered the practical application scene of ubiquitous macro base station and Home eNodeB coexistence in the next generation mobile communication system, has proposed a kind of resource allocation optimization method of automatically evading the Home eNodeB of interference.The present invention proposes a kind of static resource initial method based on network management information, carry out the automatic resource configuration startup stage of can being applicable to Home eNodeB.Simultaneously of the present invention a kind of quick resource collaboration collocation method based on Signalling exchange between wireless environment monitoring and base station proposed also, distribution is optimized to resource to be applicable to the Home eNodeB normal operating phase, and the realization Home eNodeB is evaded automatically to the interference of adjacent network device.At last, the resource in conjunction with user QoS demand, dispatching algorithm and resource prioritization tabulation that the present invention proposes is distributed, and can further satisfy Home eNodeB user's quality of service requirement.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (6)
1. the disturbance restraining method of a Home eNodeB is characterized in that, Home eNodeB obtains the resource using information of neighbor cell from webmaster in initialized resource distribution process, carry out the initial configuration of resource prioritization tabulation, and the method further comprises:
Home eNodeB obtains interfered cell tabulation and potential interference resource information, and according to described interfered cell tabulation and potential interference resource information resource allocation priority list;
Described Home eNodeB is all service-user allocation level according to customer parameter and the tabulation of described resource prioritization, and according to default dispatching criterion all service-users is sorted, and generates the User Priority tabulation;
Described Home eNodeB is selected service-user successively according to the order in the described User Priority tabulation, and is the activation of service user resource allocation according to grade and the tabulation of described resource prioritization of the service-user of selecting;
Wherein, described Home eNodeB obtains the interfered cell tabulation, is specially:
The information of neighbor cell in the wireless environment around the monitoring of described Home eNodeB, and determine pilot power and the cell type of each neighbor cell according to monitoring result; Wherein, the information of neighbor cell comprises one or more in the following content: common broadcast channel, synchronizing channel, pilot signal;
Described Home eNodeB is divided into macrocell and home base station cells with the residential quarter that pilot power surpasses default thresholding according to cell type, and is that macrocell and cell type are to sort in each residential quarter of home base station cells according to pilot power with cell type;
Described Home eNodeB obtains the interfered cell tabulation that comprises macrocell tabulation and home base station cells tabulation according to ranking results.
2. the method for claim 1 is characterized in that, described potential interference resource information comprises the resource sequence number of potential interference resource;
Described Home eNodeB obtains the potential interference resource information, specifically comprises:
Described Home eNodeB sends the solicited message of obtaining the potential interference resource to each base station in the described interfered cell tabulation;
The potential interference resource information is determined in each base station in the described interfered cell tabulation, and described potential interference resource information is sent to described Home eNodeB;
Described Home eNodeB receives the described potential interference resource information that each base station in the described interfered cell tabulation is returned.
3. method as claimed in claim 1 or 2 is characterized in that, comprises in the described resource prioritization tabulation: an isopreference level resource, two isopreference level resources and three isopreference level resources, and all resources sort according to priority in the same grade;
According to described interfered cell tabulation and potential interference resource information resource allocation priority list, specifically comprise:
The resource distribution that described Home eNodeB returns each base station during interfered cell is tabulated to the potential interference resource information is an isopreference level resource; The resource distribution of Home eNodeB in the interfered cell tabulation being returned the potential interference resource information is two isopreference level resources; The resource distribution of macrocell in the interfered cell tabulation being returned the potential interference resource information is three isopreference level resources.
4. method as claimed in claim 3 is characterized in that, described customer parameter comprises one or more in the following content: transmission rate, time delay, QoS demand;
Described Home eNodeB is all service-user allocation level according to customer parameter and the tabulation of described resource prioritization, specifically comprises:
Described Home eNodeB is determined the number of users of corresponding the first estate according to an isopreference level resource, and to select the service-user corresponding to number of users of this first estate according to customer parameter from all service-users be the first estate; Determine the number of users of corresponding the second grade according to two isopreference level resources, and be the second grade according to selecting the service-user corresponding to number of users of this second grade customer parameter other service-users outside the first estate service-user; And to select other service-users outside the first estate service-user, the second grade service user be the tertiary gradient.
5. method as claimed in claim 4 is characterized in that, the grade of described service-user according to selecting and the tabulation of described resource prioritization are the activation of service user resource allocation, specifically comprise:
When the grade of the service-user of selecting was the first estate, described Home eNodeB judged in the isopreference level resource whether surplus resources is arranged; If have, then the resource sequence according to an isopreference level resource is the activation of service user resource allocation; If no, then the activation of service user is placed in the alternative table of user;
When the grade of the service-user of selecting was the second grade, described Home eNodeB judged in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the activation of service user resource allocation; If no, then the activation of service user is placed in the alternative table of user;
When the grade of the service-user of selecting was the tertiary gradient, described Home eNodeB judged in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation; If no, then the activation of service user is placed in the alternative table of user;
After service-user in selecting successively described User Priority tabulation is finished, whether described Home eNodeB is judged in the alternative table of described user is empty, if not, described Home eNodeB judges in the described resource prioritization tabulation whether surplus resources is arranged, if, described Home eNodeB sorts to service-user according to the grade of service-user in the alternative table of described user, and is the service-user Resources allocation after sorting according to the resource sequence in the resource prioritization tabulation.
6. method as claimed in claim 4 is characterized in that, the grade of described service-user according to selecting and the tabulation of described resource prioritization are the activation of service user resource allocation, specifically comprise:
When the grade of the service-user of selecting was the first estate, described Home eNodeB judged in the isopreference level resource whether surplus resources is arranged; If have, then the resource sequence according to an isopreference level resource is the activation of service user resource allocation; If no, judge then in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the activation of service user resource allocation; If no, judge then in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation;
When the grade of the service-user of selecting was the second grade, described Home eNodeB judged in the two isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to two isopreference level resources is the activation of service user resource allocation; If no, judge then in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation;
When the grade of the service-user of selecting was the tertiary gradient, described Home eNodeB judged in the three isopreference level resources whether surplus resources is arranged; If have, then the resource sequence according to three isopreference level resources is the activation of service user resource allocation.
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| CN102143501B (en) * | 2011-03-31 | 2013-12-18 | 华中科技大学 | Method for identifying interfered mobile terminals and methods for avoiding interference |
| CN102215494B (en) * | 2011-06-16 | 2013-12-04 | 熊猫电子集团有限公司 | Wireless resource allocation method for reducing system interference and applying in base station of wireless communication system |
| CN102497671B (en) * | 2011-12-02 | 2014-08-06 | 北京邮电大学 | Interference-adaptive frequency distribution method for femtocells and femtocell |
| US9332562B2 (en) * | 2011-12-07 | 2016-05-03 | Sony Corporation | Radio base station, communication control method of radio base station and computer program |
| CN103297993B (en) * | 2012-02-28 | 2016-03-02 | 中国移动通信集团公司 | Base station uplink and downlink timeslot collocation method, Apparatus and system |
| CN103517441B (en) * | 2012-06-27 | 2017-05-03 | 中兴通讯股份有限公司 | Method of interference coordination among cells and system thereof |
| CN104185291B (en) * | 2013-05-24 | 2019-01-18 | 中兴通讯股份有限公司 | A kind of method and device of scheduling of resource |
| CN103475450B (en) * | 2013-08-29 | 2016-11-23 | 上海华为技术有限公司 | A kind of method and device of descending self-adapting modulating-coding |
| EP3202204B1 (en) * | 2014-09-30 | 2018-10-31 | British Telecommunications public limited company | Interference detection |
| CN104363600A (en) * | 2014-11-29 | 2015-02-18 | 青海民族大学 | Resource sharing method |
| CN106304131B (en) * | 2015-05-20 | 2020-08-11 | 中兴通讯股份有限公司 | Small cell switch management method and device |
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