CN103858472A

CN103858472A - System, device and method for coordinating load balance

Info

Publication number: CN103858472A
Application number: CN201380002782.6A
Authority: CN
Inventors: 方志鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-13
Filing date: 2013-12-13
Publication date: 2014-06-11
Also published as: WO2015085562A1

Abstract

The embodiment of the invention provides a system, a device and a method for coordinating load balance. A centralized controller of the system comprises a selection unit which is used for selecting a second district for edge user equipment of a first district as a scheduling district of the edge user equipment and an interface unit which is used for respectively sending notification messages to a downlink scheduler of the first district and a downlink scheduler of the second district. The messages are used for notifying the downlink scheduler of the first district and the downlink scheduler of the second district of the selection result. The selection result is that the second district schedules the user equipment of the first district. Based on the above scheme, the centralized controller realizes scheduling of load balance of a plurality of districts in a coordination communication system. Coordination of the load balance is realized through that the second district schedules the user equipment of the adjacent first district, so that the second district shares the load of the first district; time-frequency resources which can be used by the edge UE of the first district are increased; load balance among the districts is further realized; and the rate at the edge of a network is increased.

Description

Coordinate system, equipment and the method for load balance

Technical field

The embodiment of the present invention relates to communication technical field, and more specifically, relates to system, equipment and the method for coordinating load balance.

Background technology

In wireless network, due to UE(User Equipment, subscriber equipment) skewness, cause the inhomogeneous of different districts load Distribution.For example, some cell load is heavier, and Radio Resource anxiety is difficult to access new UE, even cannot ensure the QoS(Quality of Service of existing UE, service quality); And some cell load is lighter, untapped Radio Resource is more, and wireless resource utility efficiency is low, causes the waste of Radio Resource.

Minizone laod unbalance has reduced resource utilization, thereby has reduced the covering performance of system, and therefore, how coordinating minizone load balance is problem demanding prompt solution.

Summary of the invention

The embodiment of the present invention provides a kind of system, equipment and method of coordinating load balance, can realize the load balance of minizone, improves power system capacity.

First aspect, provides a kind of Centralized Controller, and this Centralized Controller comprises: selected cell, is used to the edge customer equipment of the first community to select the dispatching cell of the second community as this edge customer equipment; Interface unit, for sending a notification message to the downlink scheduler of described the first community and the downlink scheduler of described the second community respectively, described notification message is for notifying the selection result of selected cell described in the downlink scheduler of described the first community and the downlink scheduler of described the second community, and selected result is the described edge customer equipment of the first community described in described the second cell scheduling.

In conjunction with first aspect, in the first implementation of first aspect, this Centralized Controller also comprises:

Preassignment unit, is used to described edge customer equipment in described the second community preassignment data channel resource; Described interface unit, also for sending the preassignment result of described preassignment unit to data channel resource to the downlink scheduler of described the first community and the downlink scheduler of described the second community respectively.

Second aspect, a kind of downlink scheduler is provided, this downlink scheduler is the downlink scheduler of the first community, comprise: first interface unit, the notification message sending for receiving Centralized Controller, to be described Centralized Controller send described notification message when select the second community as the dispatching cell of this edge customer equipment for the edge customer equipment of described the first community, described notification message is for notifying the selection result of described Centralized Controller, and described selection result is the described edge customer equipment of the first community described in described the second cell scheduling; Allocation units, for the notification message receiving according to described first interface unit, are described edge customer devices allocation control channel resource; Data processing unit, for the notification message receiving according to described first interface unit, sets up into packet by the data that send to described edge customer equipment; The second interface unit, for the Packet Generation of described data processing unit establishment being given to the downlink scheduler of described the second community, to send to described edge customer equipment by the downlink scheduler of described the second community.

In conjunction with second aspect, in the first implementation of second aspect, the preassignment result that described first interface unit also sends for receiving described Centralized Controller, described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource; Described allocation units, specifically for the described preassignment result receiving according to described first interface unit, are described edge customer devices allocation control channel resource; Described data processing unit, specifically for the described preassignment result receiving according to described first interface unit, sets up into packet by the data that send to described edge customer equipment.

In conjunction with second aspect, in the second implementation of second aspect, described allocation units, when receiving described notification message in described first interface unit, are described edge customer equipment preassignment control channel resource; Described data processing unit, specifically for send at the downlink scheduler that receives described the second community the allocation result of data channel resource time, according to the allocation result of described data channel resource, the data that send to described edge customer equipment are set up into packet.

In conjunction with the first implementation of second aspect or second aspect or the second implementation of second aspect, in the third implementation of second aspect, described allocation units are that the downlink scheduler that is greater than described the second community the cycle of described edge customer devices allocation control channel resource is the cycle of described edge customer devices allocation data channel resource.

The third aspect, a kind of downlink scheduler is provided, this downlink scheduler is for dispatching the subscriber equipment of the first community, comprise: first interface unit, the notification message sending for receiving Centralized Controller, to be described Centralized Controller send described notification message in the time that the edge customer equipment that is the first community is selected described the second community as the dispatching cell of this edge customer equipment, described notification message is for notifying the selection result of described Centralized Controller, and described selection result is the described edge customer equipment of the first community described in described the second cell scheduling; Allocation units, for the notification message receiving according to described first interface unit, are described edge customer devices allocation data channel resource; The second interface unit, the packet of described edge customer equipment sending for receiving the downlink scheduler of described the first community; Transmitting element, the Packet Generation that the described data channel resource of distributing by described allocation units receives described the second interface unit is given described edge customer equipment.

In conjunction with the third aspect, in the first implementation of the third aspect, the preassignment result that described first interface unit also sends for receiving described Centralized Controller, described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource; Described allocation units, specifically for being the preallocated data channel resource of Centralized Controller described in described edge customer devices allocation.

In conjunction with the third aspect, in the second implementation of the third aspect, described allocation units, when receiving described notification message in described first interface unit, are described edge customer devices allocation data channel resource; Described the second interface unit, for sending to described allocation units the downlink scheduler of described the first community to the allocation result of data channel resource.

In conjunction with the first implementation of the third aspect or the third aspect or the second implementation of the third aspect, in the third implementation of the third aspect, described allocation units are that the downlink scheduler that is less than described the first community the cycle of described edge customer devices allocation data channel resource is the cycle of described edge customer devices allocation control channel resource.

Fourth aspect, provides a kind of system of coordinating load balance, and this system comprises the above-mentioned Centralized Controller of any one, the downlink scheduler of the downlink scheduler of above-mentioned the first community of any one and above-mentioned the second community of any one.

The 5th aspect, a kind of method of coordinating load balance is provided, the method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that described communication system comprises Centralized Controller, is connected with described Centralized Controller, the method comprises: described Centralized Controller is that the edge customer equipment of the first community is selected the dispatching cell of the second community as this edge customer equipment; Described Centralized Controller sends a notification message to the downlink scheduler of described the first community and the downlink scheduler of described the second community respectively, described notification message is the described edge customer equipment of the first community described in described the second cell scheduling for notifying the downlink scheduler of described the first community and the above selection result of downlink scheduler of described the second community, selected result.

In conjunction with the 5th aspect, in the first implementation aspect the 5th, also comprise: described Centralized Controller is that described edge customer equipment is in described the second community preassignment data channel resource; Described Centralized Controller is respectively to the downlink scheduler of described the first community and more than the transmission of the downlink scheduler of described the second community preassignment result to data channel resource.

The 6th aspect, a kind of method of coordinating load balance is provided, the method is applicable in communication system, described communication system comprises Centralized Controller, the downlink scheduler of the first community being connected with described Centralized Controller and the downlink scheduler of the second community, the method comprises: the downlink scheduler of described the first community receives the notification message that described Centralized Controller sends, to be described Centralized Controller send described notification message when select the second community as the dispatching cell of this edge customer equipment for the edge customer equipment of described the first community, described notification message is for notifying the selection result of described Centralized Controller, described selection result is the described edge customer equipment of the first community described in described the second cell scheduling, according to the described notification message receiving, be described edge customer devices allocation control channel resource, and the data that send to described edge customer equipment are set up into packet, the Packet Generation of described establishment is given to the downlink scheduler of described the second community, to send to described edge customer equipment by the downlink scheduler of described the second community.

In conjunction with the 6th aspect, in the first implementation aspect the 6th, also comprise: the downlink scheduler of described the first community receives the preassignment result that described Centralized Controller sends, and described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource; Described is described edge customer devices allocation control channel resource, comprising: according to described preassignment result, be described edge customer devices allocation control channel resource; Described the data that send to described edge customer equipment are set up into packet, comprising: according to described preassignment result, the data that send to described edge customer equipment are set up into packet.

In conjunction with the 6th aspect, in the second implementation aspect the 6th, described is described edge customer devices allocation control channel resource, comprising: in the time receiving described notification message, be described edge customer equipment preassignment control channel resource; And, described the data that send to described edge customer equipment are set up into packet, comprise: when the allocation result of data channel resource that sends at the downlink scheduler that receives described the second community, according to the allocation result of described data channel resource, the data that send to described edge customer equipment are set up into packet.

In conjunction with the first implementation of the 6th aspect or the 6th aspect or the second implementation of the 6th aspect, in the third implementation aspect the 6th, the downlink scheduler of described the first community is that the downlink scheduler that is greater than described the second community the cycle of described edge customer devices allocation control channel resource is the cycle of described edge customer devices allocation data channel resource.

The 7th aspect, a kind of method of coordinating load balance is provided, the method is applicable in communication system, described communication system comprises Centralized Controller, the downlink scheduler of the first community being connected with described Centralized Controller and the downlink scheduler of the second community, the method comprises: the downlink scheduler of described the second community receives the notification message that described Centralized Controller sends, to be described Centralized Controller send described notification message in the time that the edge customer equipment that is the first community is selected described the second community as the dispatching cell of this edge customer equipment, described notification message is for notifying the selection result of described Centralized Controller, described selection result is the described edge customer equipment of the first community described in described the second cell scheduling, according to described notification message, it is described edge customer devices allocation data channel resource, receive the packet of the described edge customer equipment of the downlink scheduler transmission of described the first community, the packet receiving is sent to described edge customer equipment by the data channel resource of described distribution.

In conjunction with the 7th aspect, in the first implementation aspect the 7th, also comprise: the downlink scheduler of described the second community receives the preassignment result that described Centralized Controller sends, and described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource; Be depicted as described edge customer devices allocation data channel resource, comprise: be the preallocated data channel resource of Centralized Controller described in described edge customer devices allocation.

In conjunction with the 7th aspect, in the second implementation aspect the 7th, also comprise: will above the allocation result of data channel resource be sent to the downlink scheduler of described the first community.

In conjunction with the first implementation of the 7th aspect or the 7th aspect or the second implementation of the 7th aspect, in the third implementation aspect the 7th, the downlink scheduler of described the second community is that the downlink scheduler that is less than described the first community the cycle of described edge customer devices allocation data channel resource is the cycle of described edge customer devices allocation control channel resource.

Embodiment of the present invention Centralized Controller is used to the edge UE of the first community to select the dispatching cell of the second community as this edge UE, send a notification message to the downlink scheduler of the first community and the downlink scheduler of the second community respectively, notification message is for notifying the downlink scheduler of the first community and the downlink scheduler selection result of the second community, and selection result is the edge UE of second cell scheduling the first community.Based on such scheme, realized the scheduling of the load balance of coordinating communication system Zhong Duo community by Centralized Controller, realize and coordinate load balance by the edge UE of the first adjacent community of the second cell scheduling, make the second community share the load of the first community, increase the spendable running time-frequency resource of edge UE of the first community, thereby realize minizone load balance, promote network edge speed.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the schematic diagram that can be applicable to the communication network scene of the embodiment of the present invention;

Fig. 2 is the schematic block diagram of the system of the coordination load balance of one embodiment of the invention;

Fig. 3 is the indicative flowchart of the method for the coordination load balance of one embodiment of the invention;

Fig. 4 is the indicative flowchart of the method for the coordination load balance of another embodiment of the present invention.

Fig. 5 is that the BBU that can be applicable to the embodiment of the present invention concentrates the schematic block diagram of placing;

Fig. 6 is the schematic diagram of the Centralized Controller of one embodiment of the invention;

Fig. 7 is the schematic diagram of the downlink scheduler of one embodiment of the invention;

Fig. 8 is the schematic diagram of the downlink scheduler of another embodiment of the present invention;

Fig. 9 is the schematic diagram of the Centralized Controller of another embodiment of the present invention;

Figure 10 is the schematic diagram of the downlink scheduler of another embodiment of the present invention;

Figure 11 is the schematic diagram of the downlink scheduler of another embodiment of the present invention;

Figure 12 is the flow chart of the method for the coordination load balance of one embodiment of the invention;

Figure 13 is the flow chart of the method for the coordination load balance of another embodiment of the present invention;

Figure 14 is the flow chart of the method for the coordination load balance of another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Should understand, the technical scheme of the embodiment of the present invention can be applied to various communication systems, for example: GSM(Global System for Mobile Communications, global mobile communication) system, CDMA(Code Division Multiple Access, code division multiple access) system, WCDMA(Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) system, GPRS(General Packet Radio Service, GPRS), LTE system, LTE FDD(Frequency Division Duplex, Frequency Division Duplexing (FDD)) system, LTE TDD(Time Division Duplex, time division duplex), UMTS(Universal Mobile Telecommunications System, universal mobile telecommunications system) etc.Should be understood that the present invention does not limit this.

In embodiments of the present invention, UE(User Equipment, subscriber equipment) can be referred to as terminal (Terminal), MS(Mobile Station, travelling carriage), mobile terminal (Mobile Terminal) etc., this subscriber equipment can be through RAN(Radio Access Network, wireless access network) communicate with one or more core net, for example, subscriber equipment can be mobile phone (or being called " honeycomb " phone), there is the computer of mobile terminal etc., for example, subscriber equipment can also be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device.

Base station can be the BTS(Base Transceiver Station in GSM or CDMA, base station), also can be the NB(NodeB in WCDMA, base station) or UMTS in BS(Base Station, base station), can also be the eNodeB(Evolutional Node B in LTE, evolved base station), also referred to as eNB, etc., the present invention does not limit.

In embodiments of the present invention, being connected of (for example, between module of the present invention) between parts and another parts, can comprise the connection of wired and/or wireless mode.Wired mode can include but not limited to the cable that various media form, as optical fiber, conductor cable or semiconductor circuits etc.; Or comprise other forms, as internal bus, circuit, backboard etc.Wireless mode is the connected mode that can realize radio communication, includes but not limited to radio frequency, infrared ray, bluetooth etc.Between two parts, can have inside or outside interface, described interface can be physical interface or logic interfacing.

Please refer to Fig. 1, the schematic diagram of coordination load balance (Coordinated Load Balancing, the CLB) scene that it is one embodiment of the invention.As shown in Figure 1, CLB, by the dispatching cell of the descending edge UE of dynamic change, increases the spendable running time-frequency resource of edge UE of heavily loaded community 101, thereby realizes minizone load balance, promotes network edge speed.As shown in Figure 1, the edge UE(between two neighbor cells 101 and 102 for example, UE103) send service signal by load compare Qing community 102 all the time, data channel is provided by load compare Qing community 102 all the time.

In order to realize the function of this CLB, one embodiment of the invention provides a kind of system of coordinating load balance.Below in conjunction with accompanying drawing, describe this system in detail.

Please refer to Fig. 2, the schematic block diagram of the system of the coordination load balance that it is one embodiment of the invention.The downlink scheduler of at least one community that the system 200 of the coordination load balance of Fig. 2 comprises Centralized Controller 201, be connected with this Centralized Controller 201.Herein, taking the downlink scheduler 202 of the first community and the downlink scheduler 203 of the second community as example, certainly also to comprise the downlink scheduler of Geng Duo community.Wherein, the first community is arbitrary community or the Centralized Controller 201 control range internal burden Chong communities in Centralized Controller 201 control ranges, certainly through the coordination of Centralized Controller 201, the community of pack heaviest may change in each dispatching cycle.Centralized Controller 201 can be collected the information of all communities in its control range, and the edge UE that is the first community according to the information of collecting selects the second community, for dispatching described edge UE.Then, it is edge UE distribution control channel that Centralized Controller 201 is notified the downlink scheduler 202 of the first community, and the downlink scheduler 203 of notifying the second community is edge UE distribute data channel.Thereby make the second community share the load of the first community, increase the spendable running time-frequency resource of edge UE of the first community, thereby realize minizone load balance, promote network edge speed.

It should be noted that, the serving BS of the serving BS of the first community and the second community can be identical or different, that is to say, in the time that the serving BS of the first community is identical with the serving BS of the second community, the downlink scheduler 202 of the first community and the downlink scheduler 203 of the second community can be positioned at the same baseband board of this identical serving BS or different baseband boards; And Centralized Controller 201 also can be positioned on certain baseband board of this base station, this baseband board can be identical with the baseband board at downlink scheduler 203 places of the downlink scheduler of the first community 202 or the second community, also can be different.For example, Centralized Controller 201 is positioned at the special centralized dispatching plate of base station or strengthens scheduling method baseband board, and the downlink scheduler 202 of the first community or the downlink scheduler 203 of the second community are positioned at the common baseband board of base station.In the time that the serving BS of the first community is different with the serving BS of the second community, the downlink scheduler 202 of the first community is positioned at the baseband board of the serving BS of the first community, and the downlink scheduler 203 of the second community is positioned at the baseband board of the serving BS of the second community.In addition, when the serving BS of the first community identical with the serving BS of the second community, and this base station is BBU(Base Band Unit, baseband processing unit) concentrate and place, by fiber optic stretch RRU(Radio Remote Unit Remote Radio Unit) base station time, the downlink scheduler of the downlink scheduler of the first community and the second community can be positioned on the baseband board of identical BBU, also can be positioned on the baseband board of different BBU, and Centralized Controller 201 also can be positioned on the baseband board of certain BBU of this base station, Centralized Controller 201 also can be all set on each BBU, different set-up modes, the control range difference of Centralized Controller 201, the embodiment of the present invention does not limit this.

Also it is pointed out that Centralized Controller can be functional entity, can be also logic entity.Can think software form, realize its function by processor executive program code; Also can be example, in hardware, for example, realize its function with the form of chip or specific integrated circuit.In addition, Centralized Controller can be an independent entity, also can be placed in other network equipment, as is placed in certain base station, can be the serving BS of the first community, can be also the serving BS of the second community, can also be the serving BS of other community.In addition, the downlink scheduler of each community can be functional entity, can be also logic entity.Can think software form, realize its function by processor executive program code; Also can be example, in hardware, for example, realize its function with the form of chip or specific integrated circuit.Visible, Centralized Controller 201 is used to the edge UE of the first community to select the second community, and the downlink scheduler 202 of notifying the first community distributes control channel resource for this edge UE, the downlink scheduler 203 of notifying the second community is this edge UE distribute data channel resource.So, the downlink scheduler 202 of the first community just can be for edge UE distributes control channel resource under the notice of Centralized Controller 201, and the downlink scheduler 203 of the second community can be edge UE distribute data channel resource under the notice of Centralized Controller 201.

For example, Centralized Controller 201 can be coordinated load balance according to the load information of community, for example can obtain the load information of the first community and the second community, determine and coordinate load balance result according to load information, coordinating load balance result is the edge UE of second cell scheduling the first community, sends coordination load balance result respectively to the downlink scheduler 202 of the first community and the downlink scheduler of the second community 203.For example, when the UE quantity that is greater than the UE quantity Qie Gailiang community of the second community when the UE of the first community quantity differs by more than certain threshold value, Centralized Controller 201 can be for determining that coordinating load balance result be the edge UE of second cell scheduling the first community.

For another example, Centralized Controller 201 can also be determined according to the load information of each community the priority of each community in control range, according to the priority of these communities, and the edge UE of configuration second cell scheduling the first community.Wherein, the higher expression cell load of native region priority is heavier, and the priority of the first community is higher than the priority of the second community.

For another example, Centralized Controller 201 can periodically carry out virtual scheduling.In calculating within each cycle with control range, the priority sum of all communities is defined as target function, the difference of each native region priority is larger, target function is larger, can preferentially select and make the community of target function maximum as the first community, configure the scheduling of the edge UE of the first community, affect native region priority by the dispatching cell that changes edge UE, realize the load balance of community, thereby promote the covering performance of network.

For another example, Centralized Controller 201 can periodically carry out virtual scheduling, calculates the value of utility of the adjacent area scheduling of UEQi Serving cell, edge to be scheduled (for example, the first community) in each cycle, select the adjacent area of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.Or, collect the value of utility that this edge UE that each community reports carries out pre-scheduling in each community, select the community of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.

Above-mentioned load information includes but not limited to edge UE quantity or the traffic carrying capacity etc. that Radio Resource utilization rate, cell capacity rank, uplink/downlink can be used for the capacity of load balancing and the ratio of community total capacity, hardware load instruction information (uplink/downlink hardware loading condition: basic, normal, high or overload), traffic load indication information (uplink/downlink transport load situation: basic, normal, high or overload), are connected.It is one of at least following that Radio Resource utilization rate can comprise: the GBR(Guaranteed Bit Rate of uplink/downlink, ensure bit rate), the PRB(Physical Resource Block of business, Physical Resource Block) total PRB utilization rate etc. of utilization rate and uplink/downlink.Should be understood that the embodiment of the present invention does not limit this.

In a word, the embodiment of the present invention not restriction set middle controller 201 is the mode that the edge UE of the first community selects the second community (, dispatching cell), and those skilled in the art can adjust as required.

Should also be noted that the definite coordination load balance result of Centralized Controller 201 can be periodically dynamic change.For example, in certain cycle, suppose that the first community is that heavily loaded community and the second community are light load cell, coordinating load balance result is the edge UE of second cell scheduling the first community; Within another cycle, suppose the first community be heavily loaded community and with it adjacent other community (Ru tri-communities) be light load cell, coordinating load balance result is the edge UE of the 3rd cell scheduling the first community, the downlink scheduler of You tri-communities is the resource of the edge UE distribute data channel of the first community so, the downlink scheduler of the first community, for knowing this coordination load balance result, is the resource of the edge UE distribution control channel of the first community.

In above embodiment, the downlink scheduler 203 of the second community distributes after data channel resource for edge UE, allocation result is sent to the downlink scheduler 202 of the first community, make the downlink scheduler 202 of the first community according to this allocation result, for edge UE distributes control channel resource, and set up the Packet Generation that sends to this edge UE to the downlink scheduler 203 of the second community, to send to edge UE by the second community.For example, in the time distributing control control channel resource, need to fill in the RB(Resource Block that adjacent area is distributed, Resource Block) position, modulating-coding strategy (Modulation and Coding Scheme, and pre-coding matrix instruction (Precoding Matrix Indicator, PMI) etc. MCS); And need to be the size of RB in UE distribute data channel resource according to the downlink scheduler of the second community 203, set up the packet that sends to this edge UE.So, the downlink scheduler 202 of the first community need to be waited for the allocation result of the downlink scheduler 203 of the second community, could distribute control channel resource, causes waiting for time delay, thereby has affected the efficiency of CLB.

For this reason, as an alternative embodiment of the invention, the system 200 of coordinating load balance can also further expand its function, making Centralized Controller 201 can be edge UE preassignment data channel resource, and notify the downlink scheduler 202 of the first community and the downlink scheduler 203 of the second community by preallocated result, making the downlink scheduler 202 of the first community can be directly that edge UE distributes control channel resource according to preallocated data channel resource.

Specifically, please refer to Fig. 3, the indicative flowchart of its a kind of method of coordinating load balance providing for the embodiment of the present invention.As shown in Figure 3, the method comprises the steps:

S301: Centralized Controller 201 is that the edge UE of the first community selects the second community, and be that this edge UE is in the second community preassignment data channel resource;

S302: Centralized Controller 201 is notified respectively the downlink scheduler of the first community and the downlink scheduler of the second community selection result and the preassignment result in step S301, notify the downlink scheduler of the first community and the downlink scheduler of the second community its select the edge UE of second cell scheduling the first community and preallocated data channel resource;

Concrete, Centralized Controller 201 can with the mode of notification message notify the first community downlink scheduler its select the edge UE of second cell scheduling the first community, and in this notification message, can comprise the mark of the second community, also can comprise the mark of edge UE.

S303: the downlink scheduler 202 of the first community, according to above preallocated data channel resource, for edge UE distributes control channel resource, makes the control channel of edge UE be retained in the first community;

S304: the downlink scheduler 202 of the first community is according to above preallocated data channel resource, the data that send to this edge UE (are for example set up into packet, MAC(Media Access Control, media access control) packet) send to the downlink scheduler 203 of the second community.

The order of above step S303 and S304 does not limit, and can carry out simultaneously, also can successively carry out.

S305: the downlink scheduler 203 of the second community receives the packet of the downlink scheduler transmission of the first community;

S306: the downlink scheduler 203 of the second community utilizes above preallocated data channel resource, the packet receiving is sent to edge UE by eating dishes without rice or wine.

Visible, in the present embodiment, Centralized Controller is not only UE selection scheduling community, edge, it is also the preallocated data channel resource of edge UE, and by the Serving cell of selection result and preassignment result notice edge UE (for example, the first community) and select dispatching cell (for example, the second community) downlink scheduler, so that the downlink scheduler of Serving cell can be directly that edge UE distributes control channel resource according to preallocated result, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improve the efficiency of load balance.

As an alternative embodiment of the invention, the system 100 of coordinating load balance can also further expand its function.The downlink scheduler of the first community can be edge UE preassignment control channel resource, so, when receiving after the data channel resource allocation result of the second community, just can directly use preallocated control channel resource, improved the efficiency of coordinating load balance, and avoided that control channel inadequate resource causes cannot scheduling problem.

Specifically, please refer to Fig. 4, the indicative flowchart of its a kind of method of coordinating load balance providing for the embodiment of the present invention.As shown in Figure 4, the method comprises the steps:

S401: Centralized Controller 201 is that the edge UE of the first community selects the second community;

S402: Centralized Controller 201 is notified respectively the selection result in the downlink scheduler of the first community and the downlink scheduler step S301 of the second community, notify the downlink scheduler of the first community and the downlink scheduler of the second community its select the edge UE of second cell scheduling the first community;

S403: the downlink scheduler 202 of the first community is edge UE preassignment control channel resource;

S404: the downlink scheduler 203 of the second community is edge UE distribute data channel resource, and allocation result is sent to the first cell downlink scheduler 202.

The order of above step S403 and S404 does not limit, and can carry out simultaneously, also can successively carry out.In addition, step S403's and the order that sends between selection result (being step S401) of Centralized Controller also do not limit, can receive after selection result, carry out preassignment, also can, before receiving selection result, just carry out preassignment.For example, can setting cycle, be edge UE preassignment control channel resource in each cycle.

S405: the downlink scheduler 202 of the first community receives the result that data channel resource that the downlink scheduler 203 of the second community sends is distributed;

S406: the result that the data channel resource that the downlink scheduler 202 of the first community sends according to the downlink scheduler 203 of the second community is distributed, the data that send to this edge UE are set up into the downlink scheduler 203 of Packet Generation to the second community.

S407: the downlink scheduler 203 of the second community receives the packet of the downlink scheduler transmission of the first community;

S408: the downlink scheduler 203 of the second community utilizes above data channel resource of distributing, and the packet receiving is sent to edge UE by eating dishes without rice or wine.

Visible, in the present embodiment, the scheduler of the first community can be the preallocated control channel resource of edge UE, thereby, receiving after the data channel resource allocation result of the second community, can directly use preallocated control channel resource, improve the efficiency of coordinating load balance, and avoided that control channel inadequate resource causes cannot scheduling problem.

In addition, the downlink scheduler 202 of the first community and the downlink scheduler 203 of the second community all can be for edge UE allocation of channel resources periodically.The distribution here comprises and distributing and preassignment.Alternatively, the downlink scheduler 202 of the first community is greater than the downlink scheduler 203 of the second community for the cycle of this edge UE distribute data channel resource for edge UE distributes the cycle of control channel resource.Like this, avoid Serving cell in real time for edge customer distributes control channel resource, can reduce overhead.The cycle of scheduling can set in advance in downlink scheduler, also can be determined by Centralized Controller, and notify the downlink scheduler of the first community and the downlink scheduler of the second community by notification message, should be understood that the embodiment of the present invention does not limit this.

Alternatively, the downlink scheduler 203 of the second community can also be used for sending to the downlink scheduler 202 of the first community the request message that distributes control channel resource.The downlink scheduler 202 of the first community can also be used for receiving the request message of the distribution control channel resource that the downlink scheduler 203 of the second community sends, and in the time receiving the request message that distributes control channel resource, is that edge UE distributes control channel resource.Alternatively, this request message can be the allocation result of above-mentioned data channel resource.In the time that the assignment period of control channel resource is greater than the assignment period of data channel resource, the request message that the downlink scheduler of the first community can send by the downlink scheduler of the second community triggers as edge UE distribution control channel.The distribution mutual and channel resource of minizone is that the coordination load balance result sending by Centralized Controller triggers, without the about 1ms of every TTI() real-time, interactive, not only reduce overhead, can also avoid minizone information interaction frequently.

Alternatively, the downlink scheduler 202 of the first community can be further used for distributing control channel resource according to the size (also referred to as data volume) of the data of the edge UE of the first community for this edge UE.Particularly, the downlink scheduler 202 of the first community, is further used for setting up the MAC(Media Access Control of edge UE, media access control) packet, distribute suitable control channel resource according to the size of MAC packet, like this, can avoid the wasting of resources.

Alternatively, the downlink scheduler 202 of the first community, can also be used for the data of edge UE (as the MAC packet of setting up) to send to the downlink scheduler 203 of the second community.The downlink scheduler 203 of the second community also, for receiving the data of the edge UE that the downlink scheduler 202 of the first community sends, sends to edge UE by the data of edge UE in data channel resource.

Alternatively, control channel can comprise PDCCH(Physical Downlink Control Channel, Physical Downlink Control Channel), data channel can comprise PDSCH(Physical Downlink Shared Channel, Physical Downlink Shared Channel), should be understood that the embodiment of the present invention does not limit this.

Particularly, the downlink scheduler 203 of the second community is used to the UE of the first community to distribute PDSCH channel resource, the downlink scheduler 202 of the first community is used to the UE of the first community to distribute PDCCH channel resource, and the downlink scheduler 203 of the second community sends to UE for the UE data that the downlink scheduler of the first community 202 is sent on PDSCH channel by eating dishes without rice or wine.

Alternatively, the downlink scheduler of the first community, the downlink scheduler of the second community and Centralized Controller can be arranged in the communication system of concentrating multiple BBU networkings of placing, Centralized Controller is arranged in arbitrary BBU of multiple BBU, the descending scheduling of the first community can be positioned at the BBU corresponding with the first community, and the descending scheduling of the second community is positioned at the BBU corresponding with the second community.

Alternatively, the downlink scheduler of the first community, the downlink scheduler of the second community and Centralized Controller are arranged in the communication system of distributed base station networking, communication system is disposed telegon, each base station of communication system is all connected with telegon, Centralized Controller is positioned at arbitrary base station of telegon or communication system, the downlink scheduler of the first community is positioned at the base station at the first place, community, and the downlink scheduler of the second community is positioned at the base station at the second place, community.

Should be understood that the embodiment of the present invention for the application scenarios of downlink scheduler and Centralized Controller and dispose and do not limit.

Scene graph below in conjunction with Fig. 5 is described the embodiment of the present invention in detail.

Schematic block diagram shown in Fig. 5 is to concentrate under the networking scene of placing (Cloud BB) at BBU, in network, the BBU of base station concentrates and places, and by USU(Universal Switching Unit, general switch unit) interconnected, and by optical fiber and RRU(Remote Radio Unite, Remote Radio Unit) connect.Centralized Controller can be positioned at certain piece baseband board of certain BBU, as Centralized Controller 503 is positioned at the special baseband board of certain piece of BBU1, alternatively, this baseband board can also comprise sub-clustering unit, sub-clustering unit is for being divided at least one bunch by multiple microzonations of communication network, particularly, can multiple microzonations be divided into at least one bunch according to the interference value between any two communities in multiple communities.In at least one bunch, the first cell cluster comprises the first community and the second community, and the first community is adjacent with the second community.The downlink scheduler 502 of the first community is positioned at the special baseband board of certain piece of BBU2, and the downlink scheduler 503 of the second community is positioned at the special baseband board of certain piece of BBU N.Here the BBU that supposes the first community is different with the BUU of the second community, and certainly, the BUU of the BBU of the first community and the second community also can be identical, and the embodiment of the present invention is not done any restriction.

The scene graph that should be understood that Fig. 5 is only exemplary, and leaves no choice but limit the scope of the invention.For example, the Centralized Controller in Fig. 5 can also be positioned at other BBU, and the downlink scheduler of the downlink scheduler of the first community and the second community can be arranged in the identical or different baseband board of same BBU.

Centralized Controller 501 can be collected the information of all communities in its control range, and the edge UE that is the first community according to the information of collecting selects the second community, for dispatching edge UE.Then, it is edge UE distribution control channel that Centralized Controller 501 is notified the downlink scheduler 502 of the first community, and the downlink scheduler 503 of notifying the second community is edge UE distribute data channel.Thereby make the second community share the load of the first community, increase the spendable running time-frequency resource of edge UE of the first community, thereby realize minizone load balance, promote network edge speed.Centralized Controller selects the second community can, with reference to above-mentioned, to repeat no more as the mode of the edge UE of the first community, dispatching cell herein.

Particularly, Centralized Controller 501 can with the mode of notification message notify the first community downlink scheduler its select the edge UE of second cell scheduling the first community, and in this notification message, can comprise the mark of the second community, also can comprise the mark of edge UE.

The downlink scheduler 503 of the second community is for knowing that according to the notification message receiving need to carry out CLB truly dispatches, particularly, can identify to determine the edge UE that need to dispatch the first community by the first cell ID and the edge UE that carry in notification message, for the edge UE distribute data channel resource of this first community, for example, in LTE system, for the edge UE of this second community distributes PDSCH channel resource.

The downlink scheduler 502 of the first community is for knowing that according to the notification message receiving need to carry out CLB truly dispatches, for this edge UE distributes control channel resource.

Due in the time distributing control control channel resource, need to fill in RB position, MCS and PMI etc. that adjacent area is distributed; And need to be the size of RB in UE distribute data channel resource according to the downlink scheduler of the second community 503, set up the packet that sends to this edge UE.So, the downlink scheduler 502 of the first community need to be waited for the allocation result of the downlink scheduler 503 of the second community, could distribute control channel resource, causes waiting for time delay, thereby has affected the efficiency of CLB.Alternatively, Centralized Controller 501 can be edge UE preassignment data channel resource, and notify the downlink scheduler 502 of the first community and the downlink scheduler 503 of the second community by preallocated result, making the downlink scheduler 502 of the first community can be directly that edge UE distributes control channel resource according to preallocated data channel resource.Concrete example can, with reference to the embodiment of figure 3 and Fig. 4, repeat no more herein.

Pass through such scheme, realized the scheduling of the load balance of coordinating communication system Zhong Duo community by Centralized Controller, realize and coordinate load balance by the edge UE of the second adjacent community of the first cell scheduling, make the second community share the load of the first community, increase the spendable running time-frequency resource of edge UE of the first community, thereby realize minizone load balance, promote network edge speed.

Fig. 6 is the schematic diagram of the Centralized Controller of one embodiment of the invention.The Centralized Controller 600 of Fig. 6 is examples for Centralized Controller in the system of above-mentioned coordination load balance, comprises selected cell 601 and interface unit 602.

Selected cell 601 is used to the edge customer equipment of the first community to select the dispatching cell of the second community as this edge customer equipment.

Interface unit 602 is for sending a notification message to the downlink scheduler of the first community and the downlink scheduler of the second community respectively, notification message is for notifying the selection result of the downlink scheduler of the first community and the downlink scheduler selected cell 601 of the second community, and selection result is the edge customer equipment of second cell scheduling the first community.

Based on such scheme, realized the scheduling of the load balance of coordinating communication system Zhong Duo community by Centralized Controller, realize and coordinate load balance by the edge UE of the first adjacent community of the second cell scheduling, make the second community share the load of the first community, increase the spendable running time-frequency resource of edge UE of the first community, thereby realize minizone load balance, promote network edge speed.

This Centralized Controller 600 can be realized the function that in the system of above-mentioned coordination load balance, Centralized Controller relates to, by suitably omit with the system of above-mentioned coordination load balance in similar description.

It should be noted that, the serving BS of the serving BS of the first community and the second community can be identical or different, that is to say, in the time that the serving BS of the first community is identical with the serving BS of the second community, the downlink scheduler of the downlink scheduler of the first community and the second community can be positioned at the same baseband board of this identical serving BS or different baseband boards; And Centralized Controller also can be positioned on certain baseband board of this base station, this baseband board can be identical with the baseband board at the downlink scheduler place of the downlink scheduler of the first community or the second community, also can be different.For example, Centralized Controller is positioned at the special centralized dispatching plate of base station or strengthens scheduling method baseband board, and the downlink scheduler of the downlink scheduler of the first community or the second community is positioned at the common baseband board of base station.In the time that the serving BS of the first community is different with the serving BS of the second community, the downlink scheduler of the first community is positioned at the baseband board of the serving BS of the first community, and the downlink scheduler of the second community is positioned at the baseband board of the serving BS of the second community.

In addition, when the serving BS of the first community identical with the serving BS of the second community, and this base station is that BBU concentrates placement, when by fiber optic stretch RRU the base station, the downlink scheduler of the downlink scheduler of the first community and the second community can be positioned on the baseband board of identical BBU, also can be positioned on the baseband board of different BBU, and Centralized Controller also can be positioned on the baseband board of certain BBU of this base station, Centralized Controller also can be all set on each BBU, different set-up modes, the control range difference of Centralized Controller, the embodiment of the present invention does not limit this.

Also it is pointed out that Centralized Controller can be functional entity, can be also logic entity.Can think software form, realize its function by processor executive program code; Also can be example, in hardware, for example, realize its function with the form of chip or specific integrated circuit.In addition, Centralized Controller can be an independent entity, also can be placed in other network equipment, as is placed in certain base station, can be the serving BS of the first community, can be also the serving BS of the second community, can also be the serving BS of other community.In addition, the downlink scheduler of each community can be functional entity, can be also logic entity.Can think software form, realize its function by processor executive program code; Also can be example, in hardware, for example, realize its function with the form of chip or specific integrated circuit.

Visible, selected cell 601 is used to the edge UE of the first community to select the second community, interface unit 602 is this edge UE distribution control channel resource for the downlink scheduler of notifying the first community, and the downlink scheduler of notifying the second community is this edge UE distribute data channel resource.So, the downlink scheduler of the first community just can be for edge UE distributes control channel resource under the notice of Centralized Controller, and the downlink scheduler of the second community can be edge UE distribute data channel resource under the notice of Centralized Controller.

For example, selected cell 601 can be for coordinating load balance according to the load information of community, for example can obtain the load information of the first community and the second community, determine and coordinate load balance result according to load information, coordination load balance result is that the edge UE(of second cell scheduling the first community selects the edge UE of the second community as scheduling the first community); Interface unit 602 is for sending coordination load balance result (being that notification message is used to indicate this coordination load balance result) to the downlink scheduler of the first community and the downlink scheduler of the second community respectively.For example, when the UE quantity that is greater than the UE quantity Qie Gailiang community of the second community when the UE of the first community quantity differs by more than certain threshold value, selected cell 601 can be for determining that coordinating load balance result be the edge UE of second cell scheduling the first community.

For another example, selected cell 601 can also be used for determining according to the load information of each community the priority of each community in control range, according to the priority of these communities, and the edge UE of configuration second cell scheduling the first community.Wherein, the higher expression cell load of native region priority is heavier, and the priority of the first community is higher than the priority of the second community.

For another example, selected cell 601 can also be used for periodically carrying out virtual scheduling.In calculating within each cycle with control range, the priority sum of all communities is defined as target function, the difference of each native region priority is larger, target function is larger, can preferentially select and make the community of target function maximum as the first community, configure the scheduling of the edge UE of the first community, affect native region priority by the dispatching cell that changes edge UE, realize the load balance of community, thereby promote the covering performance of network.

For another example, selected cell 601 can also be used for periodically carrying out virtual scheduling, (for example calculate UEQi Serving cell, interior edge to be scheduled of each cycle, the first community) the value of utility of adjacent area scheduling, select the adjacent area of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.Or, collect the value of utility that this edge UE that each community reports carries out pre-scheduling in each community, select the community of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.

Above-mentioned load information includes but not limited to edge UE quantity or the traffic carrying capacity etc. that Radio Resource utilization rate, cell capacity rank, uplink/downlink can be used for the capacity of load balancing and the ratio of community total capacity, hardware load instruction information (uplink/downlink hardware loading condition: basic, normal, high or overload), traffic load indication information (uplink/downlink transport load situation: basic, normal, high or overload), are connected.It is one of at least following that Radio Resource utilization rate can comprise: total PRB utilization rate of the GBR of uplink/downlink, the PRB utilization rate of business and uplink/downlink etc.Should be understood that the embodiment of the present invention does not limit this.

In a word, it is the mode that the edge UE of the first community selects the second community (, dispatching cell) that the embodiment of the present invention is not limit selected cell 601, and those skilled in the art can adjust as required.

Should also be noted that the definite coordination load balance result of selected cell 601 can be periodically dynamic change.For example, in certain cycle, suppose that the first community is that heavily loaded community and the second community are light load cell, coordinating load balance result is the edge UE of second cell scheduling the first community; Within another cycle, suppose the first community be heavily loaded community and with it adjacent other community (Ru tri-communities) be light load cell, coordinating load balance result is the edge UE of the 3rd cell scheduling the first community, the downlink scheduler of You tri-communities is the resource of the edge UE distribute data channel of the first community so, the downlink scheduler of the first community, for knowing this coordination load balance result, is the resource of the edge UE distribution control channel of the first community.

In above embodiment, the downlink scheduler of the second community is that edge UE distributes after data channel resource, allocation result is sent to the downlink scheduler of the first community, make the downlink scheduler of the first community according to this allocation result, for edge UE distributes control channel resource, and set up the Packet Generation that sends to this edge UE to the downlink scheduler of the second community, to send to edge UE by the second community.For example, in the time distributing control control channel resource, need to fill in RB position, MCS and PMI etc. that adjacent area is distributed; And need to be the size of RB in UE distribute data channel resource according to the downlink scheduler of the second community, set up the packet that sends to this edge UE.So, the downlink scheduler of the first community need to be waited for the allocation result of the downlink scheduler of the second community, could distribute control channel resource, causes waiting for time delay, thereby has affected the efficiency of CLB.

For this reason, as an alternative embodiment of the invention, Centralized Controller 600 can comprise preassignment unit 603, and preassignment unit 603 is used to edge UE in the second community preassignment data channel resource; Interface unit 602 can also be used for sending the preassignment result of preassignment unit 603 to data channel resource to the downlink scheduler of the first community and the downlink scheduler of the second community respectively.Like this, making the downlink scheduler of the first community can be directly that edge UE distributes control channel resource according to preallocated data channel resource, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Alternatively, control channel can comprise PDCCH, and data channel can comprise PDSCH, should be understood that the embodiment of the present invention does not limit this.

Alternatively, the downlink scheduler of the first community, the downlink scheduler of the second community and Centralized Controller can be arranged in the communication system of concentrating multiple BBU networkings of placing, Centralized Controller can be arranged in arbitrary BBU of multiple BBU, the descending scheduling of the first community can be positioned at the BBU corresponding with the first community, and the descending scheduling of the second community is positioned at the BBU corresponding with the second community.

Alternatively, the downlink scheduler of the first community, the downlink scheduler of the second community and Centralized Controller can be arranged in the communication system of distributed base station networking, communication system is disposed telegon, each base station of communication system is all connected with telegon, Centralized Controller can be positioned at arbitrary base station of telegon or communication system, the downlink scheduler of the first community is positioned at the base station at the first place, community, and the downlink scheduler of the second community is positioned at the base station at the second place, community.

Fig. 7 is the schematic diagram of the downlink scheduler of one embodiment of the invention.The downlink scheduler 700 of Fig. 7 is examples for the downlink scheduler of the first community in the system of above-mentioned coordination load balance, comprises first interface unit 701, allocation units 702, data processing unit 703 and the second interface unit 704.

The notification message that first interface unit 701 sends for receiving Centralized Controller, to be described Centralized Controller send notification message in the time that the edge UE that is the first community selects the second community as the dispatching cell of this edge UE, notification message is for notifying the selection result of Centralized Controller, and selection result is the described edge UE of the first community described in the second cell scheduling;

The notification message of allocation units 702 for receiving according to first interface unit 701, for edge UE distributes control channel resource.

The notification message of data processing unit 703 for receiving according to first interface unit 701, sets up into packet by the data that send to edge UE.

The second interface unit 704 is given the downlink scheduler of the second community for Packet Generation that data processing unit 703 is set up, to send to edge UE by the downlink scheduler of the second community.

This downlink scheduler 700 can be realized the function that the downlink scheduler of the first community in the system of above-mentioned coordination load balance relates to, by suitably omit with the system of above-mentioned coordination load balance in similar description.

It should be noted that, the serving BS of the serving BS of the first community and the second community can be identical or different, that is to say, in the time that the serving BS of the first community is identical with the serving BS of the second community, the downlink scheduler of the downlink scheduler of the first community and the second community can be positioned at the same baseband board of BBU of this identical serving BS or different baseband boards.In the time that the serving BS of the first community is different with the serving BS of the second community, the downlink scheduler of the first community is positioned at the BBU of the serving BS of the first community, the downlink scheduler of the second community is positioned at the BBU of the serving BS of the second community, and the embodiment of the present invention does not limit this.Particularly, downlink scheduler can be placed in the baseband board of BBU.

Also it is pointed out that Centralized Controller can be functional entity, can be also logic entity.Can think software form, realize its function by processor executive program code; Also can be example, in hardware, for example, realize its function with the form of chip or specific integrated circuit.In addition, Centralized Controller can be an independent entity, also can be placed in other network equipment, as is placed in certain base station, can be the serving BS of the first community, can be also the serving BS of the second community, can also be the serving BS of other community.Particularly, being placed in the BBU of base station, can be common baseband board or the special baseband board of BBU.In addition, the downlink scheduler of the downlink scheduler of the first community and the second community can be functional entity, can be also logic entity.Can think software form, realize its function by processor executive program code; Also can be example, in hardware, for example, realize its function with the form of chip or specific integrated circuit.Visible, Centralized Controller is used to the edge UE of the first community to select the second community, and the downlink scheduler of notifying the first community distributes control channel resource for this edge UE, and the downlink scheduler of notifying the second community is this edge UE distribute data channel resource.So, the downlink scheduler of the first community just can be for edge UE distributes control channel resource under the notice of Centralized Controller, and the downlink scheduler of the second community can be edge UE distribute data channel resource under the notice of Centralized Controller.

For example, Centralized Controller can be coordinated load balance according to the load information of community, for example can obtain the load information of the first community and the second community, determine and coordinate load balance result according to load information, coordinating load balance result is the edge UE of second cell scheduling the first community, sends coordination load balance result respectively to the downlink scheduler of the first community and the downlink scheduler of the second community.For example, when the UE quantity that is greater than the UE quantity Qie Gailiang community of the second community when the UE of the first community quantity differs by more than certain threshold value, Centralized Controller can be for determining that coordinating load balance result be the edge UE of second cell scheduling the first community.

For another example, Centralized Controller can also be determined according to the load information of each community the priority of each community in control range, according to the priority of these communities, and the edge UE of configuration second cell scheduling the first community.Wherein, the higher expression cell load of native region priority is heavier, and the priority of the first community is higher than the priority of the second community.

For another example, Centralized Controller can periodically carry out virtual scheduling.In calculating within each cycle with control range, the priority sum of all communities is defined as target function, the difference of each native region priority is larger, target function is larger, can preferentially select and make the community of target function maximum as the first community, configure the scheduling of the edge UE of the first community, affect native region priority by the dispatching cell that changes edge UE, realize the load balance of community, thereby promote the covering performance of network.

For another example, Centralized Controller can periodically carry out virtual scheduling, calculates the value of utility of the adjacent area scheduling of UEQi Serving cell, edge to be scheduled (for example, the first community) in each cycle, select the adjacent area of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.Or, collect the value of utility that this edge UE that each community reports carries out pre-scheduling in each community, select the community of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.

In a word, the embodiment of the present invention not restriction set middle controller is the mode that the edge UE of the first community selects the second community (, dispatching cell), and those skilled in the art can adjust as required.

Should also be noted that the definite coordination load balance result of Centralized Controller can be periodically dynamic change.For example, in certain cycle, suppose that the first community is that heavily loaded community and the second community are light load cell, coordinating load balance result is the edge UE of second cell scheduling the first community; Within another cycle, suppose the first community be heavily loaded community and with it adjacent other community (Ru tri-communities) be light load cell, coordinating load balance result is the edge UE of the 3rd cell scheduling the first community, the downlink scheduler of You tri-communities is the resource of the edge UE distribute data channel of the first community so, the downlink scheduler of the first community, for knowing this coordination load balance result, is the resource of the edge UE distribution control channel of the first community.

Alternatively, first interface unit 701 can also be used for receiving the preassignment result that Centralized Controller sends, and preassignment result is that Centralized Controller is the result of edge UE in the second community preassignment data channel resource.Allocation units 702 can be specifically for the preassignment result receiving according to first interface unit 701, for edge UE distributes control channel resource.Data processing unit 703 can, specifically for the preassignment result receiving according to first interface unit 701, be set up into packet by the data that send to edge UE.So, when receiving after the data channel resource allocation result of the second community, allocation units 702 can be directly that edge UE distributes control channel resource according to preallocated result, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Alternatively, allocation units 702 can when receiving notification message in first interface unit 701, be edge UE preassignment control channel resource.Data processing unit 703 can be when receiving the allocation result of data channel resource that the downlink scheduler of the second community sends at the second interface unit 704, according to the allocation result of data channel resource, the data that send to edge UE are set up into packet.

In addition, the downlink scheduler of the downlink scheduler of the first community and the second community all can be for edge UE allocation of channel resources periodically.The distribution here comprises and distributing and preassignment.Alternatively, allocation units 702 are the cycle of this edge UE distribute data channel resource for edge UE distributes the downlink scheduler that the cycle of control channel resource is greater than the second community.Like this, avoid Serving cell in real time for edge customer distributes control channel resource, can reduce overhead.The cycle of scheduling can set in advance in downlink scheduler, also can be determined by Centralized Controller, and notify the downlink scheduler of the first community and the downlink scheduler of the second community by notification message, should be understood that the embodiment of the present invention does not limit this.

Fig. 8 is the schematic diagram of the downlink scheduler of one embodiment of the invention.The downlink scheduler 800 of Fig. 8 is examples for the downlink scheduler of the second community in the system of above-mentioned coordination load balance, for dispatching the UE of the first community, comprise first interface unit 801, allocation units 802, the second interface unit 803 and transmitting element 804.

First interface unit 801, the notification message sending for receiving Centralized Controller, to be Centralized Controller send notification message in the time that the edge UE that is the first community selects the second community as the dispatching cell of this edge UE, notification message is for notifying the selection result of Centralized Controller, and selection result is the edge UE of second cell scheduling the first community.

Allocation units 802, for the notification message receiving according to first interface unit 801, are edge UE distribute data channel resource.

The second interface unit 803, the packet of edge UE sending for receiving the downlink scheduler of the first community.

Transmitting element 804, the Packet Generation that the data channel resource of distributing by allocation units 802 receives the second interface unit 803 is to edge UE.

This downlink scheduler 800 can be realized the function that the downlink scheduler of the second community in the system of above-mentioned coordination load balance relates to, by suitably omit with the system of above-mentioned coordination load balance in similar description.

Alternatively, first interface unit 801 can also be used for receiving the preassignment result that Centralized Controller sends, and preassignment result is that Centralized Controller is the result of edge UE in the second community preassignment data channel resource.Allocation units 802 can be specifically for being the preallocated data channel resource of described edge UE allocation set middle controller.Concrete example can, with reference to the embodiment of figure 3 and Fig. 4, repeat no more herein.

Alternatively, allocation units 802 can when receiving notification message in first interface unit 801, be edge UE distribute data channel resource; The second interface unit 803 can be for sending to allocation units 802 downlink scheduler of the first community to the allocation result of data channel resource.

Alternatively, the downlink scheduler that the cycle that allocation units 802 are edge UE distribute data channel resource is less than the first community is the cycle that edge UE distributes control channel resource.Like this, avoid the Serving cell of edge UE in real time for edge customer distributes control channel resource, can reduce overhead.The cycle of scheduling can set in advance in downlink scheduler, also can be determined by Centralized Controller, and notify the downlink scheduler of the first community and the downlink scheduler of the second community by notification message, should be understood that the embodiment of the present invention does not limit this.

It should be noted that, the interface unit in above embodiment can be interface circuit.Selected cell can be the processor of setting up separately, also can be integrated in some processors of base station and realize, in addition, also can be stored in the memory of base station with the form of program code, call and carry out above tracing task and set up the function of unit by some processors of base station.Allocation units, preassignment unit and data processing unit realize same selected cell.Processor described here can be a central processing unit (Central Processing Unit, CPU), or specific integrated circuit (Application Specific Integrated Circuit,, or be configured to implement one or more integrated circuits of the embodiment of the present invention ASIC).

Fig. 9 is the schematic diagram of the Centralized Controller of another embodiment of the present invention.Centralized Controller 900 is examples for Centralized Controller in the system of above-mentioned coordination load balance, comprises processor 901, memory 902 and interface circuit 903.The operation of processor 901 control appliances 900, processor can be a CPU, or specific integrated circuit ASIC, or is configured to implement one or more integrated circuits of the embodiment of the present invention.Memory 902 can comprise read-only memory and random access memory, and provides instruction and data to processor 901.A part for memory 902 can also comprise non-volatile row random access memory.Processor 901, memory 902 and interface circuit 903 are coupled by bus system 910, and wherein bus system 910, except comprising data/address bus, also comprises power bus, control bus and status signal bus in addition.But for the purpose of clearly demonstrating, in the drawings various buses are all designated as to bus system 910.

The invention described above embodiment coordinates function that in the system of load balance, Centralized Controller relates to and can apply above-mentioned Centralized Controller 900 and realize.Wherein, processor 901 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can complete by the instruction of the integrated logic circuit of the hardware in processor 901 or software form.Above-mentioned processor 901 can be general processor, comprises CPU or NP etc.; Can also be DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic device, discrete hardware components.Can realize or carry out disclosed each method, step and logic diagram in the embodiment of the present invention.General processor can be that microprocessor or this processor can be also the processors of any routine etc.

In this embodiment, processor 901 is used to the edge UE of the first community to select the dispatching cell of the second community as this edge UE.Interface circuit 903 is for sending a notification message to the downlink scheduler of the first community and the downlink scheduler of the second community respectively, notification message is for notifying the selection result of the downlink scheduler of the first community and the downlink scheduler processor 901 of the second community, and selection result is the edge UE of second cell scheduling the first community.

This Centralized Controller 900 can be realized the function that in the system of above-mentioned coordination load balance, Centralized Controller relates to, by suitably omit with the system of above-mentioned coordination load balance in similar description.

Visible, processor 901 is used to the edge UE of the first community to select the second community, interface circuit 903 is this edge UE distribution control channel resource for the downlink scheduler of notifying the first community, and the downlink scheduler of notifying the second community is this edge UE distribute data channel resource.So, the downlink scheduler of the first community just can be for edge UE distributes control channel resource under the notice of Centralized Controller, and the downlink scheduler of the second community can be edge UE distribute data channel resource under the notice of Centralized Controller.

For example, processor 901 can be for coordinating load balance according to the load information of community, for example can obtain the load information of the first community and the second community, determine and coordinate load balance result according to load information, coordination load balance result is that the edge UE(of second cell scheduling the first community selects the edge UE of the second community as scheduling the first community); Interface circuit 903 is for sending coordination load balance result (being that notification message is used to indicate this coordination load balance result) to the downlink scheduler of the first community and the downlink scheduler of the second community respectively.For example, when the UE quantity that is greater than the UE quantity Qie Gailiang community of the second community when the UE of the first community quantity differs by more than certain threshold value, processor 901 can be for determining that coordinating load balance result be the edge UE of second cell scheduling the first community.

For another example, processor 901 can also be used for determining according to the load information of each community the priority of each community in control range, according to the priority of these communities, and the edge UE of configuration second cell scheduling the first community.Wherein, the higher expression cell load of native region priority is heavier, and the priority of the first community is higher than the priority of the second community.

For another example, processor 901 can also be used for periodically carrying out virtual scheduling.In calculating within each cycle with control range, the priority sum of all communities is defined as target function, the difference of each native region priority is larger, target function is larger, can preferentially select and make the community of target function maximum as the first community, configure the scheduling of the edge UE of the first community, affect native region priority by the dispatching cell that changes edge UE, realize the load balance of community, thereby promote the covering performance of network.

For another example, processor 901 can also be used for periodically carrying out virtual scheduling, (for example calculate UEQi Serving cell, interior edge to be scheduled of each cycle, the first community) the value of utility of adjacent area scheduling, select the adjacent area of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.Or, collect the value of utility that this edge UE that each community reports carries out pre-scheduling in each community, select the community of value of utility the best for example, as the dispatching cell (, the second community) of edge UE.

In a word, it is the mode that the edge UE of the first community selects the second community (, dispatching cell) that the embodiment of the present invention is not limit processor 901, and those skilled in the art can adjust as required.

Should also be noted that the definite coordination load balance result of processor 901 can be periodically dynamic change.For example, in certain cycle, suppose that the first community is that heavily loaded community and the second community are light load cell, coordinating load balance result is the edge UE of second cell scheduling the first community; Within another cycle, suppose the first community be heavily loaded community and with it adjacent other community (Ru tri-communities) be light load cell, coordinating load balance result is the edge UE of the 3rd cell scheduling the first community, the downlink scheduler of You tri-communities is the resource of the edge UE distribute data channel of the first community so, the downlink scheduler of the first community, for knowing this coordination load balance result, is the resource of the edge UE distribution control channel of the first community.

For this reason, as an alternative embodiment of the invention, processor 901 can also be used to edge UE in the second community preassignment data channel resource; Interface circuit 903 can also be used for the preassignment result to data channel resource to the downlink scheduler of the first community and the downlink scheduler sending processor 901 of the second community respectively.Like this, making the downlink scheduler of the first community can be directly that edge UE distributes control channel resource according to preallocated data channel resource, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Figure 10 is the schematic diagram of the downlink scheduler of another embodiment of the present invention.Downlink scheduler 1000 is examples for the downlink scheduler of the first community in the system of above-mentioned coordination load balance, comprises processor 1001, memory 1002 and interface circuit 1003.The operation of processor 1001 control appliances 1000, processor can be a CPU, or ASIC, or is configured to implement one or more integrated circuits of the embodiment of the present invention.Memory 1002 can comprise read-only memory and random access memory, and provides instruction and data to processor 1001.A part for memory 1002 can also comprise non-volatile row random access memory.Processor 1001, memory 1002 and interface circuit 1003 are coupled by bus system 1010, and wherein bus system 1010, except comprising data/address bus, also comprises power bus, control bus and status signal bus in addition.But for the purpose of clearly demonstrating, in the drawings various buses are all designated as to bus system 1010.

The invention described above embodiment coordinates function that the downlink scheduler of the first community in the system of load balance relates to and can apply above-mentioned downlink scheduler 1000 and realize.Wherein, processor 1001 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can complete by the instruction of the integrated logic circuit of the hardware in processor 1001 or software form.Above-mentioned processor 1001 can be general processor, comprises CPU or NP etc.; Can also be DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic device, discrete hardware components.Can realize or carry out disclosed each method, step and logic diagram in the embodiment of the present invention.General processor can be that microprocessor or this processor can be also the processors of any routine etc.

In this embodiment, the notification message that interface circuit 1003 sends for receiving Centralized Controller, to be described Centralized Controller send notification message in the time that the edge UE that is the first community selects the second community as the dispatching cell of this edge UE, notification message is for notifying the selection result of Centralized Controller, and selection result is the described edge UE of the first community described in the second cell scheduling.The notification message that processor 1001 receives according to interface circuit 1003, for edge UE distributes control channel resource, and the notification message receiving according to interface circuit 1003, the data that send to edge UE are set up into packet.Interface circuit 1003 is also given the downlink scheduler of the second community for Packet Generation that processor 1001 is set up, to send to edge UE by the downlink scheduler of the second community.

This downlink scheduler 1000 can be realized the function that the downlink scheduler of the first community in the system of above-mentioned coordination load balance relates to, by suitably omit with the system of above-mentioned coordination load balance in similar description.

Alternatively, interface circuit 1003 can also be used for receiving the preassignment result that Centralized Controller sends, and preassignment result is that Centralized Controller is the result of edge UE in the second community preassignment data channel resource.Processor 1001 can be specifically for the preassignment result receiving according to interface circuit 1003, for edge UE distributes control channel resource.Processor 1001 can, specifically for the preassignment result receiving according to interface circuit 1003, be set up into packet by the data that send to edge UE.So, when receiving after the data channel resource allocation result of the second community, processor 1001 can be directly that edge UE distributes control channel resource according to preallocated result, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Alternatively, processor 1001 can be specifically in the time that interface circuit 1003 receives notification message, is edge UE preassignment control channel resource.Processor 1001 can when receive the allocation result of data channel resource that the downlink scheduler of the second community sends at interface circuit 1003, according to the allocation result of data channel resource, be set up into packet by the data that send to edge UE.

In addition, the downlink scheduler of the downlink scheduler of the first community and the second community all can be for edge UE allocation of channel resources periodically.The distribution here comprises and distributing and preassignment.Alternatively, processor 1001 is the cycle of this edge UE distribute data channel resource for edge UE distributes the downlink scheduler that the cycle of control channel resource is greater than the second community.Like this, avoid Serving cell in real time for edge customer distributes control channel resource, can reduce overhead.The cycle of scheduling can set in advance in downlink scheduler, also can be determined by Centralized Controller, and notify the downlink scheduler of the first community and the downlink scheduler of the second community by notification message, should be understood that the embodiment of the present invention does not limit this.

Figure 11 is the schematic diagram of the downlink scheduler of another embodiment of the present invention.Downlink scheduler 1100 is examples for the downlink scheduler of the second community in the system of above-mentioned coordination load balance, comprises processor 1101, memory 1102, interface circuit 1103 and transceiver 1104.The operation of processor 1101 control appliances 1100, processor can be a CPU, or ASIC, or is configured to implement one or more integrated circuits of the embodiment of the present invention.Memory 1102 can comprise read-only memory and random access memory, and provides instruction and data to processor 1101.A part for memory 1102 can also comprise non-volatile row random access memory.Processor 1101, memory 1102, transceiver 1104 and interface circuit 1103 are coupled by bus system 1110, and wherein bus system 1110, except comprising data/address bus, also comprises power bus, control bus and status signal bus in addition.But for the purpose of clearly demonstrating, in the drawings various buses are all designated as to bus system 1110.

The invention described above embodiment coordinates function that the downlink scheduler of the second community in the system of load balance relates to and can apply above-mentioned downlink scheduler 1100 and realize.Wherein, processor 1101 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can complete by the instruction of the integrated logic circuit of the hardware in processor 1101 or software form.Above-mentioned processor 1101 can be general processor, comprises CPU or NP etc.; Can also be DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic device, discrete hardware components.Can realize or carry out disclosed each method, step and logic diagram in the embodiment of the present invention.General processor can be that microprocessor or this processor can be also the processors of any routine etc.

In this embodiment, the notification message that interface circuit 1103 sends for receiving Centralized Controller, to be Centralized Controller send notification message in the time that the edge UE that is the first community selects the second community as the dispatching cell of this edge UE, notification message is for notifying the selection result of Centralized Controller, and selection result is the edge UE of second cell scheduling the first community.The notification message that processor 1101 receives according to interface circuit 1103 is edge UE distribute data channel resource.The packet of edge UE that interface circuit 1103 also sends for receiving the downlink scheduler of the first community.The Packet Generation that transceiver 1104 receives interface circuit 1103 for the data channel resource of distributing by processor 1101 is to edge UE.

This downlink scheduler 1100 can be realized the function that the downlink scheduler of the second community in the system of above-mentioned coordination load balance relates to, by suitably omit with the system of above-mentioned coordination load balance in similar description.

Alternatively, interface circuit 1103 can also be used for receiving the preassignment result that Centralized Controller sends, and preassignment result is that Centralized Controller is the result of edge UE in the second community preassignment data channel resource.Processor 1101 can be specifically for being the preallocated data channel resource of described edge UE allocation set middle controller.Concrete example can, with reference to the embodiment of figure 3 and Fig. 4, repeat no more herein.

Alternatively, processor 1101 can be specifically in the time that interface circuit 1103 receives notification message, is edge UE distribute data channel resource; Interface circuit 1103 can be for sending to processor 1101 downlink scheduler of the first community to the allocation result of data channel resource.

Alternatively, the downlink scheduler that the cycle that processor 1101 is edge UE distribute data channel resource is less than the first community is the cycle that edge UE distributes control channel resource.Like this, avoid the Serving cell of edge UE in real time for edge customer distributes control channel resource, can reduce overhead.The cycle of scheduling can set in advance in downlink scheduler, also can be determined by Centralized Controller, and notify the downlink scheduler of the first community and the downlink scheduler of the second community by notification message, should be understood that the embodiment of the present invention does not limit this.

Figure 12 is the flow chart of the method for the coordination load balance of one embodiment of the invention.The method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that this communication system comprises Centralized Controller, is connected with Centralized Controller.The method is carried out by Centralized Controller.

1201, Centralized Controller is that the edge customer equipment of the first community is selected the dispatching cell of the second community as this edge customer equipment.

1202, Centralized Controller sends a notification message to the downlink scheduler of the first community and the downlink scheduler of the second community respectively, notification message is for notifying the downlink scheduler of the first community and the above selection result of downlink scheduler of the second community, and selected result is the edge customer equipment of second cell scheduling the first community.

The method of Figure 12 can be realized by above-mentioned Centralized Controller, therefore suitably omits the description repeating.

Alternatively, as an embodiment, Centralized Controller is that edge customer equipment is in the second community preassignment data channel resource, respectively to the downlink scheduler of the first community and more than the transmission of the downlink scheduler of the second community preassignment result to data channel resource.Like this, making the downlink scheduler of the first community can be directly that edge UE distributes control channel resource according to preallocated data channel resource, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Figure 13 is the flow chart of the method for the coordination load balance of one embodiment of the invention.The method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that this communication system comprises Centralized Controller, is connected with Centralized Controller.The method is carried out by Centralized Controller.The method is carried out by the downlink scheduler of the first community.

1301, the downlink scheduler of the first community receives the notification message that Centralized Controller sends, to be Centralized Controller send notification message in the time that the edge customer equipment that is the first community is selected the second community as the dispatching cell of this edge customer equipment, notification message is for notifying the selection result of Centralized Controller, and selection result is the edge customer equipment of second cell scheduling the first community.

1302, according to the notification message receiving, be edge customer devices allocation control channel resource, and the data that send to edge customer equipment are set up into packet.

1303, the downlink scheduler by the Packet Generation of setting up to the second community, to send to edge customer equipment by the downlink scheduler of the second community.

The method of Figure 13 can be realized by the downlink scheduler of above-mentioned the first community, therefore suitably omits the description repeating.

Alternatively, as an embodiment, the downlink scheduler of the first community can receive the preassignment result that Centralized Controller sends, and preassignment result is that Centralized Controller is the result of described edge customer equipment in the second community preassignment data channel resource.In step 1302, can be according to preassignment result, be edge customer devices allocation control channel resource.According to preassignment result, the data that send to edge customer equipment are set up into packet.Therefore, the downlink scheduler of the first community can be directly that edge UE distributes control channel resource according to preallocated result, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Alternatively, as another embodiment, in step 1302, in the time receiving described notification message, be edge customer equipment preassignment control channel resource; And when the allocation result of the data channel resource sending at the downlink scheduler that receives the second community, according to the allocation result of data channel resource, the data that send to edge customer equipment are set up into packet.

In addition, the downlink scheduler of the downlink scheduler of the first community and the second community all can be for edge UE allocation of channel resources periodically.The distribution here comprises and distributing and preassignment.Preferably, to distribute the downlink scheduler that the cycle of control channel resource is greater than the second community be the cycle of this edge UE distribute data channel resource to the downlink scheduler of the first community.Like this, avoid Serving cell in real time for edge customer distributes control channel resource, can reduce overhead.The cycle of scheduling can set in advance in downlink scheduler, also can be determined by Centralized Controller, and notify the downlink scheduler of the first community and the downlink scheduler of the second community by notification message, should be understood that the embodiment of the present invention does not limit this.

Figure 14 is the flow chart of the method for the coordination load balance of one embodiment of the invention.The method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that this communication system comprises Centralized Controller, is connected with Centralized Controller.The method is carried out by Centralized Controller.The method is carried out by the downlink scheduler of the second community.

1401, the downlink scheduler of the second community receives the notification message that Centralized Controller sends, to be Centralized Controller send notification message in the time that the edge customer equipment that is the first community is selected the second community as the dispatching cell of this edge customer equipment, notification message is for notifying the selection result of Centralized Controller, and selection result is the edge customer equipment of the first community described in the second cell scheduling.

1402, according to notification message, be edge customer devices allocation data channel resource.

1403, the packet of the edge customer equipment that the downlink scheduler of reception the first community sends.

1404, the packet receiving is sent to edge customer equipment by the data channel resource of distributing.

The method of Figure 14 can be realized by the downlink scheduler of above-mentioned the second community, therefore suitably omits the description repeating.

Alternatively, as an embodiment, the downlink scheduler of the second community can also receive the preassignment result that Centralized Controller sends, and preassignment result is that Centralized Controller is the result of edge customer equipment in the second community preassignment data channel resource.In step 1402, it is the preallocated data channel resource of edge customer devices allocation Centralized Controller.Like this, making the downlink scheduler of the first community can be directly that edge UE distributes control channel resource according to preallocated data channel resource, and without waiting for the downlink scheduler of the dispatching cell allocation result to data channel resource, can complete control channel distributes, thereby reduce wait time delay, improved the efficiency of load balance.

Alternatively, as another embodiment, can also the downlink scheduler of the first community will be sent to the allocation result of data channel resource above.

Those of ordinary skill in the art can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can realize described function with distinct methods to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In the several embodiment that provide in the application, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, when actual realization, can have other dividing mode, for example multiple unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.

The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.

In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.

If described function realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.

Claims

1. a Centralized Controller, is characterized in that, comprising:

Selected cell, is used to the edge customer equipment of the first community to select the dispatching cell of the second community as this edge customer equipment;

Interface unit, for sending a notification message to the downlink scheduler of described the first community and the downlink scheduler of described the second community respectively, described notification message is for notifying the selection result of selected cell described in the downlink scheduler of described the first community and the downlink scheduler of described the second community, and selected result is the described edge customer equipment of the first community described in described the second cell scheduling.

2. Centralized Controller according to claim 1, is characterized in that, also comprises:

Preassignment unit, is used to described edge customer equipment in described the second community preassignment data channel resource;

Described interface unit, also for sending the preassignment result of described preassignment unit to data channel resource to the downlink scheduler of described the first community and the downlink scheduler of described the second community respectively.

3. a downlink scheduler, described downlink scheduler is the downlink scheduler of the first community, it is characterized in that, comprising:

First interface unit, the notification message sending for receiving Centralized Controller, to be described Centralized Controller send described notification message when select the second community as the dispatching cell of this edge customer equipment for the edge customer equipment of described the first community, described notification message is for notifying the selection result of described Centralized Controller, and described selection result is the described edge customer equipment of the first community described in described the second cell scheduling;

Allocation units, for the notification message receiving according to described first interface unit, are described edge customer devices allocation control channel resource;

Data processing unit, for the notification message receiving according to described first interface unit, sets up into packet by the data that send to described edge customer equipment;

The second interface unit, for the Packet Generation of described data processing unit establishment being given to the downlink scheduler of described the second community, to send to described edge customer equipment by the downlink scheduler of described the second community.

4. downlink scheduler according to claim 3, it is characterized in that, the preassignment result that described first interface unit also sends for receiving described Centralized Controller, described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource;

Described allocation units, specifically for the described preassignment result receiving according to described first interface unit, are described edge customer devices allocation control channel resource;

Described data processing unit, specifically for the described preassignment result receiving according to described first interface unit, sets up into packet by the data that send to described edge customer equipment.

5. downlink scheduler according to claim 3, is characterized in that, described allocation units when receiving described notification message in described first interface unit, are described edge customer equipment preassignment control channel resource;

Described data processing unit, specifically for send at the downlink scheduler that receives described the second community the allocation result of data channel resource time, according to the allocation result of described data channel resource, the data that send to described edge customer equipment are set up into packet.

6. according to the downlink scheduler described in claim 3-5 any one, it is characterized in that, described allocation units are that the downlink scheduler that is greater than described the second community the cycle of described edge customer devices allocation control channel resource is the cycle of described edge customer devices allocation data channel resource.

7. a downlink scheduler, for dispatching the subscriber equipment of the first community, is characterized in that, comprising:

First interface unit, the notification message sending for receiving Centralized Controller, to be described Centralized Controller send described notification message in the time that the edge customer equipment that is the first community is selected described the second community as the dispatching cell of this edge customer equipment, described notification message is for notifying the selection result of described Centralized Controller, and described selection result is the described edge customer equipment of the first community described in described the second cell scheduling;

Allocation units, for the notification message receiving according to described first interface unit, are described edge customer devices allocation data channel resource;

The second interface unit, the packet of described edge customer equipment sending for receiving the downlink scheduler of described the first community;

Transmitting element, the Packet Generation that the described data channel resource of distributing by described allocation units receives described the second interface unit is given described edge customer equipment.

8. downlink scheduler according to claim 7, it is characterized in that, the preassignment result that described first interface unit also sends for receiving described Centralized Controller, described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource;

Described allocation units, specifically for being the preallocated data channel resource of Centralized Controller described in described edge customer devices allocation.

9. downlink scheduler according to claim 7, is characterized in that, described allocation units when receiving described notification message in described first interface unit, are described edge customer devices allocation data channel resource;

Described the second interface unit, for sending to described allocation units the downlink scheduler of described the first community to the allocation result of data channel resource.

10. according to the downlink scheduler described in claim 7-9 any one, it is characterized in that, described allocation units are that the downlink scheduler that is less than described the first community the cycle of described edge customer devices allocation data channel resource is the cycle of described edge customer devices allocation control channel resource.

Coordinate the system of load balance for 11. 1 kinds, it is characterized in that, comprising:

Centralized Controller as described in claim 1 or 2 any one;

The downlink scheduler of the first community as described in claim 3 to 6 any one; And

The downlink scheduler of the second community as described in claim 7 to 10 any one.

Coordinate the method for load balance for 12. 1 kinds, it is characterized in that, described method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that described communication system comprises Centralized Controller, is connected with described Centralized Controller, and described method comprises:

Described Centralized Controller is that the edge customer equipment of the first community is selected the dispatching cell of the second community as this edge customer equipment;

Described Centralized Controller sends a notification message to the downlink scheduler of described the first community and the downlink scheduler of described the second community respectively, described notification message is the described edge customer equipment of the first community described in described the second cell scheduling for notifying the downlink scheduler of described the first community and the above selection result of downlink scheduler of described the second community, selected result.

13. methods according to claim 12, is characterized in that, also comprise:

Described Centralized Controller is that described edge customer equipment is in described the second community preassignment data channel resource;

Described Centralized Controller is respectively to the downlink scheduler of described the first community and more than the transmission of the downlink scheduler of described the second community preassignment result to data channel resource.

Coordinate the method for load balance for 14. 1 kinds, it is characterized in that, described method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that described communication system comprises Centralized Controller, is connected with described Centralized Controller, and described method comprises:

The downlink scheduler of described the first community receives the notification message that described Centralized Controller sends, to be described Centralized Controller send described notification message when select the second community as the dispatching cell of this edge customer equipment for the edge customer equipment of described the first community, described notification message is for notifying the selection result of described Centralized Controller, and described selection result is the described edge customer equipment of the first community described in described the second cell scheduling;

According to the described notification message receiving, be described edge customer devices allocation control channel resource, and the data that send to described edge customer equipment are set up into packet;

The Packet Generation of described establishment is given to the downlink scheduler of described the second community, to send to described edge customer equipment by the downlink scheduler of described the second community.

15. methods according to claim 14, is characterized in that, also comprise:

The downlink scheduler of described the first community receives the preassignment result that described Centralized Controller sends, and described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource;

Described is described edge customer devices allocation control channel resource, comprising:

According to described preassignment result, it is described edge customer devices allocation control channel resource;

Described the data that send to described edge customer equipment are set up into packet, comprising:

According to described preassignment result, the data that send to described edge customer equipment are set up into packet.

16. methods according to claim 14, is characterized in that, described is described edge customer devices allocation control channel resource, comprising:

In the time receiving described notification message, it is described edge customer equipment preassignment control channel resource; And,

Send at the downlink scheduler that receives described the second community the allocation result of data channel resource time, according to the allocation result of described data channel resource, the data that send to described edge customer equipment are set up into packet.

17. according to the method described in claim 14-16 any one, it is characterized in that, the downlink scheduler of described the first community is that the downlink scheduler that is greater than described the second community the cycle of described edge customer devices allocation control channel resource is the cycle of described edge customer devices allocation data channel resource.

Coordinate the method for load balance for 18. 1 kinds, it is characterized in that, described method is applicable in communication system, the downlink scheduler of the first community and the downlink scheduler of the second community that described communication system comprises Centralized Controller, is connected with described Centralized Controller, and described method comprises:

The downlink scheduler of described the second community receives the notification message that described Centralized Controller sends, to be described Centralized Controller send described notification message in the time that the edge customer equipment that is the first community is selected described the second community as the dispatching cell of this edge customer equipment, described notification message is for notifying the selection result of described Centralized Controller, and described selection result is the described edge customer equipment of the first community described in described the second cell scheduling;

According to described notification message, it is described edge customer devices allocation data channel resource;

Receive the packet of the described edge customer equipment of the downlink scheduler transmission of described the first community;

The packet receiving is sent to described edge customer equipment by the data channel resource of described distribution.

19. methods according to claim 18, is characterized in that, also comprise:

The downlink scheduler of described the second community receives the preassignment result that described Centralized Controller sends, and described preassignment result is that described Centralized Controller is the result of described edge customer equipment in described the second community preassignment data channel resource;

Be depicted as described edge customer devices allocation data channel resource, comprise:

For the preallocated data channel resource of Centralized Controller described in described edge customer devices allocation.

20. methods according to claim 18, is characterized in that, also comprise:

The downlink scheduler of described the first community will above the allocation result of data channel resource be sent to.

21. according to the method described in claim 18-20 any one, it is characterized in that, the downlink scheduler of described the second community is that the downlink scheduler that is less than described the first community the cycle of described edge customer devices allocation data channel resource is the cycle of described edge customer devices allocation control channel resource.