CN101765153A - Method and system for realizing load balance - Google Patents
Method and system for realizing load balance Download PDFInfo
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- CN101765153A CN101765153A CN200810246536A CN200810246536A CN101765153A CN 101765153 A CN101765153 A CN 101765153A CN 200810246536 A CN200810246536 A CN 200810246536A CN 200810246536 A CN200810246536 A CN 200810246536A CN 101765153 A CN101765153 A CN 101765153A
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Abstract
The invention discloses a processing method and a processing system for realizing load balance. The method comprises that: a source eNB receives a load condition report from an adjacent eNB, wherein load information carried in the load condition report comprises information about connected user equipment numbers of each cell administered by the adjacent eNB; and the source eNB makes a cross-eNB load balancing or switching strategy according to the information about the connected user equipment numbers. In the method, the adjacent eNB takes the information about the connected user equipment numbers best presenting load condition as a part of or all the load information carried in the load condition report, so that the source NB can fulfil the aim of the load balance when making the load balancing or switching strategy. The source eNB can actively transmit a load condition request to the adjacent eNB to acquire the load condition of the adjacent eNB; or the adjacent eNB can periodically provide the load condition for the eNB or be triggered by set conditions to provide the load condition for the eNB, so that needs on the load balancing or switching strategies under different conditions are satisfied.
Description
Technical field
The present invention relates to mobile communication technology, (3GPP, The 3 to refer in particular to the 3G (Third Generation) Moblie partnership project
RdGeneration Partnership Project) method and system of the realization load balancing under the mobile communication system Long Term Evolution of Ti Chuing (LTE, the LongTime Evolution) framework.
Background technology
Development along with network architecture flattening, and the appearance of the removable access way of multiple high-speed wideband, make the mobile communication system of evolution that higher transmission rate, shorter transmission delay can be provided, and make cost lower, also support mobility between the inner connecting system of 3GPP and the mobility between 3GPP connecting system and the non-3GPP connecting system or the like simultaneously, impel mobile communication system to propose the framework theory of future generation of LTE/ System Architecture Evolution (SAE, System Architecture Evolution).
Mobile communication system structure under the LTE/SAE framework as shown in Figure 1, (eNB eNodeB) forms the Radio Access Network (E-RAN, Evolved Radio Access Network) of evolution in the base station of evolution; The packet core network of evolution is made up of Mobility Management Entity (MME, Mobility Management Entity) and service gateway entity (S-GW, Serving Gateway).Interface between eNB and the core network is the S1 interface, and wherein, the interface between eNB and the MME is expressed as S1-MME, is used to finish the chain of command function of mobile management and S1 interface; Interface between eNB and the S-GW is expressed as S1-U, is used to finish the function such as route, transmission of user data.Link to each other by X2 interface between the eNB, X2 interface be used to finish subscriber equipment (UE, User Equipment) under state of activation the mobile management function and the information interaction between the eNB of equity.
In order to satisfy user's mobility requirement, switching is the function of mobile communication system indispensability; Simultaneously in order can steadily to move efficiently, the necessary holding load equilibrium (Load Sharing or LoadBalance) of mobile communication system, promptly when the cell load that some eNB administered was too high, eNB needed on one's own initiative the certain customers that are in connected state in the respective cell to be switched to the light sub-district of adjacent load.Therefore, load balancing can increase throughput, strengthens data-handling capacity, improves the flexibility and the availability of mobile communication system.This shows that load balancing is the switching that mobile communication system is initiated from the load angle; Common switching is the switching of initiating in order to realize the mobility of user equipment demand.
Because the development of network architecture flattening, there is not the radio network controller (RNC that is similar in the 3-G (Generation Three mobile communication system) in the Radio Access Network of evolution, Radio Network Controller) equipment, therefore the function all about wireless access control and minizone load balancing or switching all needs to realize in eNB.ENB need be known the loading condition of neighbor cell when carrying out load balancing or initiating to switch, so that eNB can select the lighter sub-district of load as Target cell, the sub-district of avoiding selecting to have transshipped is as Target cell.For each sub-district of same eNB administration, eNB is the loading condition that can know each sub-district; Yet for each sub-district of different e NB administration, eNB just need transmit load condition by the interface between the eNB and report the loading condition of knowing neighbor cell.Therefore, how to make eNB effectively carry out load balancing, become problem demanding prompt solution by the load condition report.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system that realize load balancing,
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes load balancing, this method comprises: the base station eNB of source evolution receives the load condition report from adjacent eNB, the load information that carries in this load condition report comprises the subscriber equipment linking number information of each sub-district of adjacent eNB administration, and source eNB strides load balancing or the handover decisions of eNB according to described subscriber equipment linking number information.
Before the load condition report of described source eNB reception from adjacent eNB, further comprise: source eNB sends the load condition request to adjacent eNB; After adjacent eNB is received described load condition request, be obtained from the load information of each sub-district of barrel linchpin, send the load condition report to source eNB then, the load information that carries in this load condition report comprises subscriber equipment linking number information.
Before the load condition report of described source eNB reception from adjacent eNB, further comprise: adjacent eNB periodically or according to triggering the load information that is obtained from each sub-district that barrel has jurisdiction over with imposing a condition, send the load condition report to source eNB then, the load information that carries in this load condition report comprises subscriber equipment linking number information.
Described load balancing or handover decisions of striding eNB according to described subscriber equipment linking number information, comprise: judge according to subscriber equipment linking number information whether cell load is saturated, if load is saturated, then can not be with respective cell as the Target cell in load balancing or the handover decisions; If load does not reach capacity, then according to subscriber equipment linking number information select target sub-district in load balancing or handover decisions.
Described subscriber equipment linking number information is: the current subscriber equipment quantity that is in connection status in the sub-district; Perhaps, the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts; Perhaps, the current subscriber equipment quantity of connection status and the ratio that this sub-district allows the subscriber equipment thresholding of access of being in the sub-district.
Described load information further comprises: power that use physical resource block message that use eNB hardware load information or sub-district or sub-district and bandwidth information or above combination arbitrarily.
Described load balancing or handover decisions of striding eNB according to described subscriber equipment linking number information, comprise: judge according to subscriber equipment linking number information whether cell load is saturated, if load is saturated, then can not be with respective cell as the Target cell in load balancing or the handover decisions; If load does not reach capacity, the select target sub-district in load balancing or handover decisions of other information except that subscriber equipment linking number information in the reference load information then.
A kind of system that realizes load balancing, this system comprises: source eNB and adjacent eNB, wherein, described adjacent eNB is used for sending the load condition report to source eNB, and the load information that carries in this load condition report comprises the subscriber equipment linking number information of each sub-district of adjacent eNB administration; Described source eNB is used for striding according to described subscriber equipment linking number information load balancing or the handover decisions of eNB.
Described source eNB is further used for sending the load condition request to adjacent eNB.
Described subscriber equipment linking number information is: the current subscriber equipment quantity that is in connection status in the sub-district; Perhaps, the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts; Perhaps, the current subscriber equipment quantity of connection status and the ratio that this sub-district allows the subscriber equipment thresholding of access of being in the sub-district.
Among the present invention program, adjacent eNB will best embody the subscriber equipment linking number information of loading condition and report the part or all of of entrained load information as load condition, so that source eNB can grasp the load state of current device better, and carry out corresponding load balancing or handover decisions, reach the purpose of load balancing.
In addition, among the present invention program, source eNB can initiatively send the load condition request to adjacent eNB, obtains the loading condition of adjacent eNB administration sub-district; Also can send load condition report to source eNB then, to adapt to the needs of load balancing under the different situations or handover decisions by adjacent eNB periodically or according to the load information that triggers each sub-district that is obtained from the barrel linchpin with imposing a condition.
Description of drawings
Fig. 1 is the mobile communication system structural representation under the existing LTE/SAE framework;
Fig. 2 realizes the load balancing flow chart in the embodiment of the invention one;
Fig. 3 realizes the load balancing flow chart in the embodiment of the invention two;
Fig. 4 is for realizing the system configuration schematic diagram of load balancing among the present invention.
Embodiment
Among the present invention, source eNB receives the load condition report from adjacent eNB, the load information that carries in this load condition report comprises the subscriber equipment linking number information of each sub-district of adjacent eNB administration at least, and source eNB strides load balancing or the handover decisions of eNB according to described subscriber equipment linking number information.Source eNB is meant the load balancing of finally striding eNB or the eNB of handover decisions; Adjacent eNB is meant other eNBs adjacent with source eNB.Subscriber equipment linking number information can be the current subscriber equipment quantity that is in connection status in the sub-district; Also can be the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts; Can also be the current subscriber equipment quantity of connection status and the ratio that this sub-district allows the subscriber equipment thresholding of access of being in the sub-district.
Adjacent eNB can initiatively send the load condition report to source eNB, as periodically or according to triggering to source eNB sending the load condition report with imposing a condition; Also can send the load condition report to source eNB according to the request of source eNB.Below above two kinds of processing modes are described in detail, further to define the present invention program's specific implementation.
Fig. 2 realizes the load balancing flow chart in the embodiment of the invention one, as shown in Figure 2, realize in the present embodiment that the processing procedure of load balancing may further comprise the steps:
Step 201: source eNB sends the load condition request to adjacent eNB, requires adjacent eNB that load information is provided.
Step 202～step 203: after adjacent eNB is received the load condition request, be obtained from the load information of each sub-district of barrel linchpin, this load information comprises subscriber equipment linking number information at least; Send the load condition report to source eNB then, the load information that carries in this load condition report comprises subscriber equipment linking number information at least.
When adjacent eNB is obtained load information, except that will obtaining subscriber equipment linking number information at least, can also further obtain: power that use physical resource block message that use this eNB hardware load information or sub-district or sub-district and bandwidth information or above combination arbitrarily.Like this, except that comprising subscriber equipment linking number information, also further comprise in the load information: power that use physical resource block message that use eNB hardware load information or sub-district or sub-district and bandwidth information or above combination arbitrarily.
Step 204: after source eNB receives the load condition report, stride load balancing or the handover decisions of eNB according to the subscriber equipment linking number information in the load information that carries in the load condition report.
If also comprise other information outside the subscriber equipment linking number information in the load information, when then source eNB strides the load balancing of eNB or handover decisions, will carry out according to the comprehensive assessment of subscriber equipment linking number information and other information.
Fig. 3 realizes the load balancing flow chart in the embodiment of the invention two, as shown in Figure 3, realize in the present embodiment that the processing procedure of load balancing may further comprise the steps:
Step 301～step 302: adjacent eNB is obtained from the load information of each sub-district of barrel linchpin, and this load information comprises subscriber equipment linking number information at least; Send the load condition report to source eNB then, the load information that carries in this load condition report comprises subscriber equipment linking number information at least.
Adjacent eNB can periodically be obtained from the load information of each sub-district of barrel linchpin, sends the load condition report to source eNB then; Also can be according to triggering with imposing a condition, when satisfying the setting incident, be obtained from the load information of each sub-district of barrel linchpin when precondition, send load condition report to source eNB then.
When adjacent eNB is obtained load information, except that will obtaining subscriber equipment linking number information at least, can also further obtain: power that use physical resource block message that use this eNB hardware load information or sub-district or sub-district and bandwidth information or above combination arbitrarily.Like this, except that comprising subscriber equipment linking number information, also further comprise in the load information: power that use physical resource block message that use eNB hardware load information or sub-district or sub-district and bandwidth information or above combination arbitrarily.
Step 303: after source eNB receives the load condition report, stride load balancing or the handover decisions of eNB according to the subscriber equipment linking number information of carrying in the load condition report.
If also comprise other information outside the subscriber equipment linking number information in the load information, when then source eNB strides the load balancing of eNB or handover decisions, will come the select target sub-district according to the comprehensive assessment of subscriber equipment linking number information and other information.
If only comprise subscriber equipment linking number information in the load information, then carrying out load balancing or handover decisions is meant: source eNB judges according to subscriber equipment linking number information whether cell load is saturated, if load is saturated, then can not be with respective cell as the Target cell in load balancing or the handover decisions; If load does not reach capacity, then can be according to subscriber equipment linking number information select target sub-district in load balancing or handover decisions.
For example, the load information that source eNB obtains is the current subscriber equipment quantity of connection status and the subscriber equipment thresholding that the sub-district allows access of being in the sub-district of adjacent eNB administration, if the current subscriber equipment quantity that is in connection status has reached the subscriber equipment thresholding that this sub-district allows access in the sub-district, then source eNB can not be with the Target cell of respective cell as load balancing or switching; If the current user device quantity that is in connection status does not also reach the subscriber equipment thresholding that this sub-district allows access in the sub-district, be the subscriber equipment thresholding that the current user device quantity that is in connection status inserts less than this sub-district permission in the sub-district, then source eNB can be with reference to the current subscriber equipment quantity select target sub-district in load balancing or handover decisions that is in connection status.
If in the load information except that comprising subscriber equipment linking number information, also comprise other information, then carrying out load balancing or handover decisions is meant: source eNB judges according to subscriber equipment linking number information whether cell load is saturated, if load is saturated, then can not be with respective cell as the Target cell in load balancing or the handover decisions; If load does not reach capacity, other information select target sub-district in load balancing or handover decisions in then can reference load information.
For example, the load information that source eNB obtains is the current subscriber equipment quantity of connection status and subscriber equipment thresholding and other information that the sub-district allows access of being in the sub-district of adjacent eNB administration, if the current subscriber equipment quantity that is in connection status has reached the subscriber equipment thresholding that this sub-district allows access in the sub-district, then source eNB can not be with the Target cell of respective cell as load balancing or switching; If the current user device quantity that is in connection status does not also reach the subscriber equipment thresholding that this sub-district allows access in the sub-district, it is the subscriber equipment thresholding that the current user device quantity that is in connection status allows access in the sub-district less than this sub-district, then source eNB can be with reference to other information select target sub-district in load balancing or handover decisions that comprises in current subscriber equipment quantity that is in connection status and the load information, fairly simple processing is preferentially selected the Target cell of the few sub-district of the current subscriber equipment quantity that is in connection status as load balancing or handover decisions exactly when other load informations all do not transship.
ENB hardware load information, the physical resource block message that use the sub-district, parameters such as power that use the sub-district and bandwidth information all can't be complete, represent current loading condition exactly, particularly the subscriber equipment quantity that inserts in a certain sub-district is a lot, but the required resource of each subscriber equipment more after a little while, the interference of this sub-district at this moment, power, bandwidth etc. all do not reach overload, yet because random access resource limited and complexity that multi-user installation is so dispatched, make that this moment, current area may can't be admitted new subscriber equipment, in this case, carry out load balancing and handover decisions according to subscriber equipment linking number information, can effectively avoid the generation of false judgment, really reach the purpose of load balancing, make load balancing and handover decisions reach optimum.Like this, subscriber equipment linking number information is only the parameter that best embodies cell load.
Below by several examples of application specific implementation of the present invention is further specified.
Application example one
(eNB is adjacent by X2 interface a) and between the adjacent eNB (eNB b) for source eNB.The sub-district of eNB a administration is sub-district a1, and the sub-district of base station b administration is sub-district b1, sub-district b2 and sub-district b3.Three sub-districts of the sub-district a1 of eNB a administration and eNB b administration are neighboring BS relationship.
ENB a obtains the load information of each sub-district of eNB b by flow process as shown in Figure 2, and the subscriber equipment linking number information that comprises at least in the load information is the current subscriber equipment quantity that is in connection status in the sub-district, and concrete treatment step comprises:
Step 201A:eNB a sends the load condition request by X2 interface to eNB b, requires eNB b that load information is provided.
After step 202A:eNB b receives the load condition request, obtain the load information of eNB b this moment, at least the current separately subscriber equipment quantity that is in connection status in each sub-district that comprises eNB b administration in this load information, at this moment, the current subscriber equipment quantity that is in connection status is 100 among the b1 of sub-district, the current subscriber equipment quantity that is in connection status is 200 among the b2 of sub-district, and the current subscriber equipment quantity that is in connection status is 230 among the b3 of sub-district; Can further include physical resource block message that eNB b hardware load information, sub-district use, the power that uses the sub-district and bandwidth information etc. in the load information.
Step 203A:eNB b sends the load condition report to eNB a, carry load information in this load condition report, this load information comprises the current separately subscriber equipment quantity that is in connection status in each sub-district of eNB b administration at least, can further include eNB b hardware load information, the physical resource block message that uses the sub-district, the power that uses the sub-district and bandwidth information etc.
After step 204A:eNB a received the load condition report, the current separately subscriber equipment quantity that is in connection status in each sub-district that eNB b is administered was applied in load balancing or the handover decisions.If the load of sub-district a1 is saturated, for network is more effectively moved, eNB a can switch to a part of subscriber equipment among the a1 of sub-district in the sub-district of eNB b administration, and eNB a will select proper cell to implement load balancing according to the load information that eNB b provides this moment.The load information that eNB b provides is in the subscriber equipment quantity of connection status except each sub-district of eNB b administration is current, also may comprise eNB b hardware load information, the physical resource block message that use the sub-district, power that use the sub-district and bandwidth information etc., all do not have when other information under the situation of overload, eNB a can be according to the current subscriber equipment quantity that is in connection status in three sub-districts of eNB b administration, the preferential minimum sub-district b1 of the current subscriber equipment quantity that is in connection status that selects is as the Target cell in load balancing or the handover decisions, being eNB a switches to a part of subscriber equipment of sub-district a1 among the b1 of sub-district, to reach the purpose of load balancing.
Application example two
Source eNB (eNB b) and adjacent eNB (eNB a) between by X2 interface adjacent.The sub-district of eNB a administration is sub-district a1, and the sub-district of base station b administration is sub-district b1 and sub-district b2.Two sub-districts of the sub-district a1 of eNB a administration and eNB b administration are neighboring BS relationship.
ENB b obtains the load information of each sub-district of eNB a by flow process as shown in Figure 2, and the subscriber equipment linking number information that comprises at least in the load information be the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts, concrete treatment step comprises:
Step 201B:eNB b sends the load condition request by X2 interface to eNB a, requires eNB a that load information is provided.
After step 202B:eNB a receives the load condition request, obtain the load information of eNB a this moment, at least comprise in this load information the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts, at this moment, the current subscriber equipment quantity that is in connection status is 200 among the a1 of sub-district, the subscriber equipment thresholding that sub-district a1 allow to insert is 200, can further include eNB a hardware load information, the physical resource block message that uses the sub-district, the power that uses the sub-district and bandwidth information etc. in the load information.
Step 203B:eNB a sends the load condition report to eNB b, carry load information in this load condition report, this load information comprise at least the current subscriber equipment quantity that is in connection status among the a1 of sub-district be 200, and the sub-district a1 subscriber equipment thresholding that allows to insert be 200, can further include eNB b hardware load information, the physical resource block message that uses the sub-district, the power that uses the sub-district and bandwidth information etc.
After step 204B:eNB b receives load condition report, with the current subscriber equipment quantity that is in connection status among the a1 of sub-district be 200, and the sub-district a1 subscriber equipment thresholding that allows to insert be 200 to be used for load balancing or handover decisions.Because the current subscriber equipment quantity that is in connection status has arrived the subscriber equipment thresholding that allows access among the sub-district a1 of eNB a administration, show that sub-district a1 can not insert new subscriber equipment, therefore eNB b can not select the Target cell of sub-district a1 as load balancing or handover decisions when selecting proper cell to carry out load balancing or handover decisions.
Application example three
Source eNB (eNB b) and adjacent eNB (eNB a) between by X2 interface adjacent.The sub-district of eNB a administration is sub-district a1 and sub-district a2, and the sub-district of base station b administration is sub-district b1 and sub-district b2, and these four sub-districts are neighboring BS relationship each other.
ENB b obtains the load information of each sub-district of eNB a by flow process as shown in Figure 3, and the subscriber equipment linking number information that comprises at least in the load information be the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts, concrete treatment step comprises:
Step 301A:eNB a is obtained from the load information of each sub-district of barrel linchpin, this load information comprises the current subscriber equipment quantity that is in connection status among sub-district a1 and the sub-district a2 at least, be respectively 100 and 200, and the subscriber equipment thresholding of sub-district a1 and sub-district a2 permission access is 200.Load information can further include physical resource block message that eNB a hardware load information, sub-district use, the power that uses the sub-district and bandwidth information etc.
Step 302A:eNB a sends the load condition report to eNB b, carry load information in this load condition report, this load information comprise at least the current subscriber equipment quantity that is in connection status among sub-district a1 and the sub-district a2, and sub-district a1 and the sub-district a2 subscriber equipment thresholding that allows respectively to insert be 200, can further include eNB b hardware load information, the physical resource block message that uses the sub-district, the power that uses the sub-district and bandwidth information etc.
Step 303A:eNB b is used for load balancing or handover decisions with load information after receiving the load condition report.
If the load of sub-district b1 reaches capacity, eNB b will implement load balancing to certain customers' equipment of sub-district b1, so that the load of sub-district b1 can keep normal condition.ENB b determines that according to load information the subscriber equipment quantity of the current access of sub-district a2 has reached the subscriber equipment thresholding that allows access, and therefore, sub-district a2 can not become the Target cell of implementing load balancing.Similarly, when the reporting measurement report by user equipment of sub-district b2 need switch, eNB b determines that based on load information the subscriber equipment quantity of the current access of sub-district a2 has reached the subscriber equipment thresholding that allows access, therefore, sub-district a2 also can not become the Target cell that the subscriber equipment of sub-district b2 switches.
Spent a period of time, eNB a sends the load condition report to eNB b once more, this load condition report comprises the load information of eNB a this moment, this load information comprises the current subscriber equipment quantity that is in connection status among sub-district a1 and the sub-district a2, be respectively 50 and 60, and the subscriber equipment thresholding of sub-district a1 and sub-district a2 permission access is 200.The load information of eNB a can further include physical resource block message that eNB a hardware load information, sub-district use, the power that uses the sub-district and bandwidth information etc.ENB b is used for eNB b does load balancing or decision parameter from handover decisions to the sub-district that eNB a is administered with this load information after receiving new load information from eNB a.At this moment, the load of sub-district b1 reaches capacity, eNB b will implement load balancing to certain customers' equipment of sub-district b1, so that sub-district b1 can be in normal load state, eNB b determines that the current subscriber equipment quantity that is in connection status does not all surpass thresholding among sub-district a1 and the sub-district a2, and other information of the eNB a that comprises in the load information all do not show overload, so eNB b can select subscriber equipment to insert the few sub-district a1 of quantity as the Target cell of implementing load balancing.
Fig. 4 is for realizing the system configuration schematic diagram of load balancing among the present invention, as shown in Figure 4, this system comprises: source eNB and adjacent eNB, wherein, adjacent eNB is used for sending the load condition report to source eNB, and the load information that carries in this load condition report comprises the subscriber equipment linking number information of each sub-district of adjacent eNB administration at least; Source eNB is used for striding according to described subscriber equipment linking number information load balancing or the handover decisions of eNB.
Source eNB is further used for sending the load condition request to adjacent eNB, requires adjacent eNB that load information is provided.
Subscriber equipment linking number information can be the current subscriber equipment quantity that is in connection status in the sub-district; Also can be the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts; Can also be the current subscriber equipment quantity of connection status and the ratio that this sub-district allows the subscriber equipment thresholding of access of being in the sub-district.
Load information further comprises the physical resource block message of eNB hardware load information or sub-district use or power and bandwidth information or the above combination arbitrarily that use the sub-district.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. a method that realizes load balancing is characterized in that, this method comprises:
The base station eNB of source evolution receives the load condition report from adjacent eNB, the load information that carries in this load condition report comprises the subscriber equipment linking number information of each sub-district of adjacent eNB administration, and source eNB strides load balancing or the handover decisions of eNB according to described subscriber equipment linking number information.
2. method according to claim 1 is characterized in that, before the load condition report of described source eNB reception from adjacent eNB, further comprises:
Source eNB sends the load condition request to adjacent eNB;
After adjacent eNB is received described load condition request, be obtained from the load information of each sub-district of barrel linchpin, send the load condition report to source eNB then, the load information that carries in this load condition report comprises subscriber equipment linking number information.
3. method according to claim 1, it is characterized in that, before the load condition report of described source eNB reception from adjacent eNB, further comprise: adjacent eNB periodically or according to triggering the load information that is obtained from each sub-district that barrel has jurisdiction over with imposing a condition, send the load condition report to source eNB then, the load information that carries in this load condition report comprises subscriber equipment linking number information.
4. method according to claim 1, it is characterized in that, described load balancing or handover decisions of striding eNB according to described subscriber equipment linking number information, comprise: judge according to subscriber equipment linking number information whether cell load is saturated, if load is saturated, then can not be with respective cell as the Target cell in load balancing or the handover decisions; If load does not reach capacity, then according to subscriber equipment linking number information select target sub-district in load balancing or handover decisions.
5. according to the arbitrary described method of claim 1 to 4, it is characterized in that described subscriber equipment linking number information is: the current subscriber equipment quantity that is in connection status in the sub-district; Perhaps, the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts; Perhaps, the current subscriber equipment quantity of connection status and the ratio that this sub-district allows the subscriber equipment thresholding of access of being in the sub-district.
6. according to the arbitrary described method of claim 1 to 3, it is characterized in that described load information further comprises: power that use physical resource block message that use eNB hardware load information or sub-district or sub-district and bandwidth information or above combination arbitrarily.
7. method according to claim 6, it is characterized in that, described load balancing or handover decisions of striding eNB according to described subscriber equipment linking number information, comprise: judge according to subscriber equipment linking number information whether cell load is saturated, if load is saturated, then can not be with respective cell as the Target cell in load balancing or the handover decisions; If load does not reach capacity, the select target sub-district in load balancing or handover decisions of other information except that subscriber equipment linking number information in the reference load information then.
8. a system that realizes load balancing is characterized in that, this system comprises: source eNB and adjacent eNB, wherein,
Described adjacent eNB is used for sending the load condition report to source eNB, and the load information that carries in this load condition report comprises the subscriber equipment linking number information of each sub-district of adjacent eNB administration;
Described source eNB is used for striding according to described subscriber equipment linking number information load balancing or the handover decisions of eNB.
9. system according to claim 8 is characterized in that, described source eNB is further used for sending the load condition request to adjacent eNB.
10. according to Claim 8 or 9 described systems, it is characterized in that described subscriber equipment linking number information is: the current subscriber equipment quantity that is in connection status in the sub-district; Perhaps, the current subscriber equipment quantity that is in connection status in the sub-district, and this sub-district allow the subscriber equipment thresholding that inserts; Perhaps, the current subscriber equipment quantity of connection status and the ratio that this sub-district allows the subscriber equipment thresholding of access of being in the sub-district.
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Cited By (21)
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|---|---|---|---|---|
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