CN104080136B - A kind of method and apparatus for being used to realize the dynamic migration of virtual base station in BBU ponds - Google Patents
A kind of method and apparatus for being used to realize the dynamic migration of virtual base station in BBU ponds Download PDFInfo
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Abstract
It is used to realize the method for the dynamic migration of virtual base station, equipment and system in BBU ponds it is an object of the invention to provide a kind of.The present invention utilizes migration management equipment according to the migration request on the first virtual base station, it is determined that the second virtual base station of the migration for receiving first virtual base station；First virtual base station sends corresponding migration relevant parameter to second virtual base station；Second virtual base station configures its corresponding communication tunnel according to the migration relevant parameter；According to the communication tunnel, corresponding data path and interface are switched to second virtual base station by first virtual base station.Compared with prior art, the present invention realizes lossless virtual base station migration, has reached the out of service time of the millisecond order of magnitude, and realizes no packet loss, ensure that service quality, and cause user not perceive the generation of transition process.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of dynamic migration for being used to realize virtual base station in BBU ponds
Technology.
Background technology
Virtualization technology (Virtualization Technology) is hardware list currently conventional, in a multinuclear
The means of multiple independent base stations to each other are supported in member, it is according to the requirement of corresponding air-interface standard, for each void
Intend base station and distribute enough computer resources, to ensure that each virtual base station is separate in operating system aspect.
Understand that the fluctuation of load of mobile network is very big in wireless access network according to statistics.For example, in the second half of the night when it is each
The load of base station generally will be well below the load for the time that works by day.However, in the prior art, even if now virtual base station
Need work to be processed few, energy of its host machine energy to be consumed still with needing to consume in the period that is busy with one's work exists
In same level.In fact, if multiple hosts can be moved to a hardware list in the virtual base station in different hardware unit
(load convergence is realized in member), then can greatly reduce the energy resource consumption of wireless access network, make its more environmentally-friendly.And when void
When intending the load rise of base station, then virtual base station is distributed/migrated to the hardware cell with enough resources and (realize and load
Distribution).
In traditional network technique field, based on internal memory pre-copy (memory pre-copy) technology, most of business
Property virtual platform support dynamic migration of virtual machine.It can confirm, in data center's infrastructure, by using virtual
Energy consumption can be greatly reduced in machine dynamic migration.And during virtual machine (vm) migration, downtime can not avoid.Put down for traditional IT
Platform, using being based on ICP/IP protocol, the re-transmission time granularity that the protocol suite provides is in second level.It is existing to be based on TCP/IP
The application program of agreement can endure the out of service time of several seconds.
And existing virtual machine (vm) migration scheme can not be applied in virtual base station dynamic migration, it is due to and traditional IT
Using difference, virtual base station performs real-time signal transacting, is understood by experiment, using similar internal memory pre-copy technology come pair
LTE PUSCH stack are migrated, it will are had virtual machine environment (such as VMware or KVM platforms) and nearly counted
The time of second can not use, can not within the so long time for each virtual base station for needing to provide real time service
Offer service is can not be received.
Therefore, how to realize that out of service time is short as far as possible in virtual base station dynamic migration, turn into this area skill
Art personnel technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide it is a kind of be used for realize the method for the dynamic migration of virtual base station in BBU ponds, equipment with
System.
A kind of according to an aspect of the invention, there is provided side for being used to realize the dynamic migration of virtual base station in BBU ponds
Method, wherein, this method comprises the following steps：
A migration managements equipment is according to the migration request on the first virtual base station, it is determined that virtual for receiving described first
Second virtual base station of the migration of base station, wherein, first virtual base station is belonging respectively to BBU ponds with second virtual base station
Middle different BBU；
First virtual base station described in b sends corresponding migration relevant parameter to second virtual base station；
Second virtual base station described in c configures its corresponding communication tunnel according to the migration relevant parameter；
Corresponding data path and interface are switched to described by d according to the communication tunnel, first virtual base station
Two virtual base stations.
According to another aspect of the present invention, additionally provide a kind of for realizing the dynamic migration of virtual base station in BBU ponds
Migration management equipment, wherein, the equipment includes：
Managing device, for migration request of the basis on the first virtual base station, it is determined that virtual for receiving described first
Second virtual base station of the migration of base station, wherein, first virtual base station is belonging respectively to BBU ponds with second virtual base station
Middle different BBU.
In accordance with a further aspect of the present invention, additionally provide a kind of for realizing the dynamic migration of virtual base station in BBU ponds
First virtual base station, wherein, the equipment includes：
Dispensing device, the migration relevant parameter corresponding to first virtual base station is sent to the described second virtual base
Stand, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；
First switching device, for corresponding data path and interface to be switched into second virtual base station.
According to another aspect of the invention, additionally provide a kind of for realizing the dynamic migration of virtual base station in BBU ponds
Second virtual base station, wherein, the equipment includes：
Reception device, the migration phase corresponding to first virtual base station sent for receiving first virtual base station
Related parameter, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；
Configuration device, for configuring its corresponding communication tunnel according to the migration relevant parameter；
Second switching device, for according to the communication tunnel, by data path corresponding to first virtual base station and
Interface switches over.
According to another aspect of the present invention, additionally provide a kind of for realizing the dynamic migration of virtual base station in BBU ponds
Communication system, wherein, the communication system is included according to migration management equipment described above, at least one to be used to realize as above
The first described virtual base station is stated, and it is at least one for realizing the second virtual base station as described above.
Compared with prior art, the present invention using migration management equipment according to the migration request on the first virtual base station,
It is determined that the second virtual base station of the migration for receiving first virtual base station；First virtual base station is by corresponding migration
Relevant parameter is sent to second virtual base station；Second virtual base station configures it according to the migration relevant parameter and corresponded to
Communication tunnel；According to the communication tunnel, first virtual base station switches to corresponding data path and interface described
Second virtual base station.It is achieved thereby that lossless virtual base station migration, has reached the out of service time of the millisecond order of magnitude, and
No packet loss is realized, ensure that service quality, and cause user not perceive the generation of transition process.
Moreover, the present invention can also utilize migration management equipment or the first virtual base station to detect corresponding migration triggering bar
Part, when meeting the migration trigger condition, the virtual base station generation of the migration management equipment/first/corresponding migration request of transmission；
It is achieved thereby that the management to the dynamic migration of virtual base station in BBU ponds, improves the efficiency of dynamic migration, reduces BBU ponds
In energy consumption.
Moreover, the present invention is also based on the processing procedure of dynamic migration, before migration, from first virtual base station to
Discontinuous reception cycle (DRX cycle), which is sent, with the user equipment corresponding to first virtual base station extends instruction；Moving
After shifting, discontinuous reception cycle recovery instruction is sent from second virtual base station to the user equipment；Moved so as to reduce
Move past influence of the journey to user equipment.
Moreover, the present invention can also be according to the communication tunnel, first virtual base station is respectively by corresponding I/Q data
Path switches to the second virtual base station with S1/X2 interfaces；So as to ensure the user in uplink and downlink link in transition process
Data lossless, and realize the small out of service time of Millisecond.
Moreover, corresponding business can also be transmitted shape by the present invention according to the communication tunnel, first virtual base station
State information is sent to second virtual base station, and is stated the second virtual base station and be based on the traffic state information, is performed
The processing operation corresponding with the traffic state information；So as to ensure not losing for user data, accomplish seamless switching.
Moreover, the present invention can also work as one or more virtual base stations on the BBU corresponding to first virtual base station
After being migrated, the BBU corresponding with first virtual base station is closed；To reduce energy resource consumption, the mesh of energy-conserving and environment-protective is realized
's.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 shows a kind of side for being used to realize the dynamic migration of virtual base station in BBU ponds according to one aspect of the invention
Method flow chart；
Fig. 2 shows that a kind of dynamic for realizing virtual base station in BBU ponds in accordance with a preferred embodiment of the present invention is moved
The method schematic diagram of shifting；
Fig. 3 is shown according to one aspect of the invention by migration management equipment, the first virtual base station and the second virtual base station
Coordinate the system schematic for being used to realize the dynamic migration of virtual base station in BBU ponds realized；
Fig. 4 shows in accordance with a preferred embodiment of the present invention a kind of by migration management equipment, the first virtual base station and the
Two virtual base stations coordinate the system schematic for being used to realize the dynamic migration of virtual base station in BBU ponds realized；
Fig. 5 shows that one kind according to a preferred embodiment of the present invention is used to carry out the switching of I/Q data path and S1/X2
The system schematic of interface switching.
Same or analogous reference represents same or analogous part in accompanying drawing.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows a kind of side for being used to realize the dynamic migration of virtual base station in BBU ponds according to one aspect of the invention
Method flow chart.The method according to the invention, including the step S31 performed by migration management equipment 3, are held by the first virtual base station 1
Capable step S11, step S12, and the step S21 performed by the second virtual base station 2.Specifically, in step S31, migration
Management equipment is according to the migration request on the first virtual base station, it is determined that of migration for receiving first virtual base station
Two virtual base stations, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；
In step S11, first virtual base station sends corresponding migration relevant parameter to second virtual base station；In step
In S21, second virtual base station configures its corresponding communication tunnel according to the migration relevant parameter；In step s 12, root
According to the communication tunnel, corresponding data path and interface are switched to second virtual base station by first virtual base station.
Wherein, virtual base station of the present invention is included by baseband signal processing unit BBU (Baseband Signal
Processing Unit) virtual base station realized using virtualization technology.Wherein, each BBU can realize one or more
Virtual base station.
Wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station.
In step S31, migration management equipment is according to the migration request on the first virtual base station, it is determined that for receiving institute
The second virtual base station of the migration of the first virtual base station is stated, wherein, first virtual base station and second virtual base station point
Do not belong to BBU different in BBU ponds.
Specifically, the migration management equipment is according to the migration request on the first virtual base station, for example, by stage
Ground collects each BBU and/or virtual base station resource using information from management program/or virtual base station, judge each BBU and/
Or the resource service condition on virtual base station, such as when from first virtual base station corresponding to different other BBU of BBU have
There are enough available resources, it is determined that the BBU is the BBU that can receive first virtual base station, and then on the BBU
It is determined that the second virtual base station of the migration for receiving first virtual base station；Wherein, first virtual base station with it is described
Second virtual base station is belonging respectively to BBU different in BBU ponds.
Here, the migration request can be determined by the migration management equipment, that is, pass through the migration management equipment rank
Each BBU and/or virtual base station resource using information are collected to section property from management program/or virtual base station, according to collected
Resource using information, it is determined that the first virtual base station for migrating is needed, so as to generate the migration request on the first virtual base station；
Can also the migration management equipment obtain the migration on the first virtual base station sent by first virtual base station please
To ask, i.e., described migration request is generated by first virtual base station according to the resource using information of itself, and by predetermined logical
Believe agreement, the migration request is sent to the migration management equipment.
Preferably, the migration management equipment 3 can also include step S32 (not shown) and step S33 before step S31
(not shown), in step s 32, the migration management equipment 3 detect whether to meet the migration triggering for carrying out virtual base station migration
Condition；In step S33, the migration management equipment 3 is when meeting the migration trigger condition, the migration management equipment life
Into the migration request on the first virtual base station corresponding to the migration trigger condition.
Specifically, in step s 32, the migration management equipment 3 is for example, by periodically from management program/or virtual
Each BBU and/or virtual base station resource using information are collected in base station, corresponding according to collected resource using information, detection
Virtual base station whether meet the migration trigger condition migrated；Wherein, the resource using information includes but is not limited to CPU
Use information, memory usage information etc. it is one or more；Wherein, the migration trigger condition includes but is not limited to following any
：
The resource of-the virtual base station is used below or above certain threshold value；For example, when the resource of the virtual base station makes
During with less than certain threshold value, then it is assumed that the virtual base station needs to be migrated, to reach the purpose of energy-conservation；
BBU load is below or above certain threshold value corresponding to the-virtual base station；For example, when the load on some BBU
Rise, during more than certain threshold value, then migrated the one or more virtual base stations run on the BBU, to reach negative
Carry balanced purpose；
- other certain trigger conditions according to set by system；For example, when the BBU or virtual base station need to carry out it is soft
During part/hardware maintenance, safeguarded again after can the virtual base station that run on the BBU be migrated, so as to not interfere with
The user of service, realize the transparent migration to user.
In step S33, when meeting the migration trigger condition, the migration management equipment is to meeting that the migration is touched
Virtual base station corresponding to clockwork spring part, generate migration request；The virtual base station met corresponding to the migration trigger condition
As described first virtual base station.
Preferably, first virtual base station 1 can also include step S13 (not shown) and step S14 before step S31
(not shown)；In step s 13, first virtual base station 1 detects the migration triggering corresponding with first virtual base station
Condition；In step S14, when meeting the migration trigger condition, first virtual base station 1 sends empty on described first
Intend the migration request of base station to the migration management equipment.
Specifically, in step s 13, first virtual base station 1 is for example, by periodically from management program/or first
Virtual base station collects the resource using information of first virtual base station, according to collected resource using information, described in detection
Whether the first virtual base station meets the migration trigger condition migrated；Wherein, the migration trigger condition includes but is not limited to
It is any one of following：
The resource of-first virtual base station is used below or above certain threshold value；For example, work as first virtual base station
Resource when being used below certain threshold value, then it is assumed that first virtual base station needs to be migrated, to reach the purpose of energy-conservation；
- other certain trigger conditions according to set by system；For example, when reach first virtual base station or with it is described
, can be described first virtual when the corresponding BBU of first virtual base station or system etc. need to carry out the time of software/hardware maintenance
Safeguarded again after the migration of base station, so as to not interfere with serviced user, realize the transparent migration to user.
When meeting the migration trigger condition, in step S14, first virtual base station will be described on described the
The migration request of one virtual base station is sent to the migration management equipment.Included and the described first virtual base in the migration request
Stand corresponding id information, resource using information etc..
It is highly preferred that this method also includes step S15 (not shown)；In step S15, when first virtual base station obtains
After getting the migration request on first virtual base station, first virtual base station 1 refuses hand-off request.
Specifically, in step S15, generated when first virtual base station receives by the migration management equipment 3
The migration request on the first virtual base station corresponding to the migration trigger condition after, or when first virtual base station
The first virtual base station corresponding on the migration trigger condition generated as itself is sent to the migration management equipment 3
After migration request, first virtual base station refuses any hand-off request, to avoid new hand-off request to migration
The influence of process.
Wherein, the hand-off request includes but is not limited to any one of following or multinomial：
- S1 hand-off requests；
- X2 hand-off requests.
In step s 11, first virtual base station sends corresponding migration relevant parameter to the described second virtual base
Stand.
Specifically, when the migration management equipment is according to the migration request on the first virtual base station, it is determined that for receiving
After second virtual base station of the migration of first virtual base station, first virtual base station is by corresponding migration relevant parameter
Send to second virtual base station.
Wherein, the migration relevant parameter includes the related letter that BBU need to use when realizing base station using virtualization technology
Breath.
Preferably, the migration relevant parameter includes one or more in two categories below information：
I) cell-related information (Cell-specific), for example, system information block (SIB, Service Information
Block), the parameter such as S1/X2IEs, O＆M information (operation and maintenance)；
Ii) user equipment relevant information (UE-specific), for example, key KeNB, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI symbol
(C-RNTI, Cell Radio Network Temporary Identifier), it is discontinuous to receive (DRX, Discontinuous
Reception) cycle, RAB (RAB, Radio Access Bearer), SAE- temporary mobile subscriber identitys
(S-TMSI, SAE-Temporary Mobile Subscriber Identity) etc..
Because those skilled in the art be able to should determine to realize virtual base station by BBU according to actual conditions and demand
When need to obtain which virtual base station parameter, it is only for example herein, repeat no more.
In the step s 21, second virtual base station configures its corresponding communication tunnel according to the migration relevant parameter.
Specifically, second virtual base station obtains the related ginseng of corresponding migration transmitted by first virtual base station
Number, according to the migration relevant parameter, is configured to corresponding communication tunnel.Here, the communication tunnel is included but not
It is limited to any one of following or multinomial：
I) uplink path；
Ii) GTP tunnel, i.e., based on the tunnel protocol GT P in GPRS (General Packet Radio Service)
The communication tunnel that (GPRS Tunnel Protocol) is established.
In step s 12, corresponding data path and interface are cut according to the communication tunnel, first virtual base station
Shift to second virtual base station.
Specifically, first virtual base station is according to the communication tunnel, based on predetermined communication protocol, by corresponding number
Second virtual base station is switched to according to path and interface.Here, the data path and interface include but is not limited to I/Q data
One or more in path, S1 interfaces, X2 interface.
Preferably, the step S12 includes step S121 (not shown) and step S122 (not shown), wherein, in step
In S121, according to the communication tunnel, it is virtual that corresponding I/Q data path is switched to described second by first virtual base station
Base station；In step S122, according to the communication tunnel, corresponding S1/X2 interfaces are switched to institute by first virtual base station
State the second virtual base station.Here, the I/Q data is orthogonal data in the same direction.
Specifically, in step S121, according to the communication tunnel, first virtual base station carries out I/Q data and led to first
The switching on road.Reference picture 5, the switching of I/Q data path is empty according to described first by the IQ interchangers (IQ switch) in Fig. 5
Intend what the IQ switching commands transmitted by base station were completed.Wherein, first virtual base station and the second virtual base station are respectively positioned at the
On one BBU and the 2nd BBU.
Here, by taking the switching of in general I/Q data path as an example：
1) after the completion of communication tunnel foundation, existing S1/X2 links are redirected to described second by the first virtual base station
Virtual base station；
2) first virtual base station sends I/Q data path switching command to IQ interchangers；
3) I/Q data path is switched to second virtual base station by the IQ interchangers.
In Figure 5, the connection between IQ interchangers and the first virtual base station and IQ interchangers and the second virtual base station it
Between connection be generally optical fiber connection.
Those skilled in the art will be understood that the mode of above-mentioned switching I/Q data path is only for example, and other are existing or modern
The mode for the switching I/Q data path being likely to occur afterwards is such as applicable to the present invention, also should be included in the scope of the present invention with
It is interior, and be incorporated herein by reference herein.
After the completion of I/Q data path switching, in step S122, first virtual base station proceeds by S1/X2
The switching of interface.Reference picture 5, the switching in the uplink/downlink path of S1/X2 interfaces be by Fig. 5 S-GW (gateway,
Serving Gateway) the corresponding switching command according to transmitted by first virtual base station completes.
Here, in actual applications, the switching of the S1/X2 interfaces mainly includes the switching to S1 downlink paths.Here,
By taking the switching of S1 downlink paths as an example：
1) the first virtual base station sends downlink path and handovers request to MME (mobility management entity)；
2) MME sends downlink path renewal request according to the downlink path handover request to S-GW；
3) S1 downlink paths are switched to second virtual base station by the S-GW.
Those skilled in the art will be understood that the mode of above-mentioned S1/X2 interfaces switching is only for example, and other are existing or modern
The mode for the S1/X2 interfaces switching being likely to occur afterwards is such as applicable to the present invention, should also be included within the scope of the present invention,
And it is incorporated herein by reference herein.
Fig. 2 shows that a kind of dynamic for realizing virtual base station in BBU ponds in accordance with a preferred embodiment of the present invention is moved
The method schematic diagram of shifting；The method according to the invention, including the step S31 ' performed by migration management equipment 3, it is virtual by first
Base station 1 perform step S11 ', step S111 ', step S12 ', and performed by the second virtual base station 2 step S21 ', step
S22’.Specifically, in step S31 ', migration management equipment is according to the migration request on the first virtual base station, it is determined that being used for
Receive the second virtual base station of the migration of first virtual base station, wherein, first virtual base station and described second virtual
Base station is belonging respectively to BBU different in BBU ponds；In step S11 ', first virtual base station joins corresponding migration correlation
Number is sent to second virtual base station；In step S111 ', first virtual base station to the first virtual base station institute
Corresponding user equipment sends the discontinuous cycle stretch-out that receives and instructed；In step S21 ', second virtual base station is according to institute
State migration relevant parameter and configure its corresponding communication tunnel；In step S12 ', according to the communication tunnel, described first is virtual
Corresponding data path and interface are switched to second virtual base station by base station；In step S22 ', the second virtual base
Stand and send discontinuous reception cycle recovery instruction to the user equipment.
Wherein, the step S31 ' performed by migration management equipment 3, the step of execution by the first virtual base station 1
S11 ', step S12 ', and the step S21 ' performed by the second virtual base station 2, it is same or similar to correspond to step with Fig. 1,
Therefore will not be repeated here, and be incorporated herein by reference.
In step S111 ', first virtual base station is sent out to the user equipment corresponding to first virtual base station
The discontinuous cycle stretch-out that receives is sent to instruct.
Specifically, first virtual base station is discontinuous to being sent with the user equipment corresponding to first virtual base station
Receive the instruction of (DRX) cycle stretch-out so that the DRX cycle increase of the user equipment, it is ensured that the user equipment is converted into not
Dormancy state, to reduce influence of the transition process to the user equipment as far as possible.Here, the user equipment is set including any active ues
One or more in the standby equipment with inactive users.
In step S22 ', to user equipment transmission, discontinuously the reception cycle refers to second virtual base station
Order.
Specifically, after step S12 ', transition process is completed, and second virtual base station is sent to the user equipment
It is discontinuous to receive the recovery instruction of (DRX) cycle so that the user equipment recovers normal DRX cycle.
Preferably, the step S12 ' also includes step S16 ' (not shown) and step S23 ' (not shown), wherein, in step
In rapid S16 ', according to the communication tunnel, first virtual base station sends corresponding traffic state information to described
Second virtual base station；In step S23 ', second virtual base station is based on the traffic state information, execution and institute
State the corresponding processing operation of traffic state information.
Specifically, according to the communication tunnel, in step S16 ', first virtual base station will with it is described first virtual
Traffic state information corresponding to base station is sent to second virtual base station, here, the traffic state information
Including but not limited to link data and/or status information；Such as buffering downlink data, extended receiver state etc..From
And the collection and forwarding of the business datum to being presently in reason are realized, ensure that user data is not lost, accomplish seamless switching.
Correspondingly, in step S23 ', business of second virtual base station transmitted by based on first virtual base station
Transmission state information, according to the difference of the traffic state information, perform corresponding such as response or continue with behaviour
Make, so as to ensure that service quality, accomplish seamless switching.
Preferably, after the step S12 ', this method also includes step S32 ' (not shown), wherein, in the step
In S32 ', after one or more virtual base stations on the BBU corresponding to first virtual base station are migrated, closing and institute
State the corresponding BBU of the first virtual base station.
Specifically, after one or more virtual base stations on the BBU corresponding to first virtual base station are migrated,
Then by the migration management equipment, out code is sent to the BBU, is closed corresponding with first virtual base station
BBU.Or after one or more virtual base stations on the BBU corresponding to first virtual base station are migrated, it is described
BBU detects that one or more virtual base stations corresponding to itself are migrated, then the BBU performs closing automatically.
Fig. 3 is shown according to one aspect of the invention by migration management equipment, the first virtual base station and the second virtual base station
Coordinate the system schematic for being used to realize the dynamic migration of virtual base station in BBU ponds realized；Wherein, the migration management equipment
3 include managing device 31；First virtual base station 1 includes dispensing device 11, the first switching device 12；Second virtual base station 2 includes
Reception device 21, configuration device 22, the second switching device 23.Specifically, managing device 31 is according on the first virtual base station
Migration request, it is determined that the second virtual base station of the migration for receiving first virtual base station, wherein, the first virtual base
Stand and be belonging respectively to BBU different in BBU ponds from second virtual base station；Dispensing device 11 sends out corresponding migration relevant parameter
Second virtual base station is delivered to, wherein, first virtual base station is belonging respectively in BBU ponds not with second virtual base station
Same BBU；It is related that reception device 21 receives the migration corresponding to first virtual base station that first virtual base station is sent
Parameter, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；Configuration device
22 configure its corresponding communication tunnel according to the migration relevant parameter；First switching device 12 and the second switching device 23 are matched somebody with somebody
Close, according to the communication tunnel, it is virtual that data path and interface corresponding to first virtual base station are switched to described second
Base station.
Those skilled in the art will be understood that for purposes of illustration only, herein by the migration management equipment, the first virtual base station
Cooperation explanation is carried out with the second virtual base station, the migration management equipment, the first virtual base station and the second virtual base station can match somebody with somebody
Close the dynamic migration for realize virtual base station in BBU ponds；Equipment that can also be individually with other adaptations coordinates, to realize
The dynamic migration of virtual base station in BBU ponds.For example, the migration management equipment can be independently of first virtual base station and institute
The second virtual base station is stated, is engaged with other base stations, to realize the dynamic migration of virtual base station in BBU ponds.
Wherein, virtual base station of the present invention is included by baseband signal processing unit BBU (Baseband Signal
Processing Unit) virtual base station realized using virtualization technology.Wherein, each BBU can realize one or more
Virtual base station.
Wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station.
Managing device 31 is according to the migration request on the first virtual base station, it is determined that for receiving first virtual base station
Migration the second virtual base station, wherein, first virtual base station and second virtual base station are belonging respectively in BBU ponds not
Same BBU.
Specifically, the migration management equipment is according to the migration request on the first virtual base station, for example, by stage
Ground collects each BBU and/or virtual base station resource using information from management program/or virtual base station, judge each BBU and/
Or the resource service condition on virtual base station, such as when from first virtual base station corresponding to different other BBU of BBU have
There are enough available resources, it is determined that the BBU is the BBU that can receive first virtual base station, and then on the BBU
It is determined that the second virtual base station of the migration for receiving first virtual base station；Wherein, first virtual base station with it is described
Second virtual base station is belonging respectively to BBU different in BBU ponds.
Here, the migration request can be determined by the migration management equipment, that is, pass through the migration management equipment rank
Each BBU and/or virtual base station resource using information are collected to section property from management program/or virtual base station, according to collected
Resource using information, it is determined that the first virtual base station for migrating is needed, so as to generate the migration request on the first virtual base station；
Can also the migration management equipment obtain the migration on the first virtual base station sent by first virtual base station please
To ask, i.e., described migration request is generated by first virtual base station according to the resource using information of itself, and by predetermined logical
Believe agreement, the migration request is sent to the migration management equipment.
Preferably, the migration management equipment 3 can also include management detection means (not shown) and migration generating means
(not shown), management detection means detect whether to meet the migration trigger condition for carrying out virtual base station migration；When being moved described in satisfaction
When moving trigger condition, the migration generating means generation of the migration management equipment on it is described migrate corresponding to trigger condition the
The migration request of one virtual base station.
Specifically, detection means is managed for example, by periodically collecting each BBU from management program/or virtual base station
And/or the resource using information of virtual base station, according to collected resource using information, whether full detect corresponding virtual base station
The migration trigger condition that foot is migrated；Wherein, the resource using information includes but is not limited to CPU use informations, internal memory makes
It is one or more with information etc.；Wherein, the migration trigger condition includes but is not limited to any one of following：
The resource of-the virtual base station is used below or above certain threshold value；For example, when the resource of the virtual base station makes
During with less than certain threshold value, then it is assumed that the virtual base station needs to be migrated, to reach the purpose of energy-conservation；
BBU load is below or above certain threshold value corresponding to the-virtual base station；For example, when the load on some BBU
Rise, during more than certain threshold value, then migrated the one or more virtual base stations run on the BBU, to reach negative
Carry balanced purpose；
- other certain trigger conditions according to set by system；For example, when the BBU or virtual base station need to carry out it is soft
During part/hardware maintenance, safeguarded again after can the virtual base station that run on the BBU be migrated, so as to not interfere with
The user of service, realize the transparent migration to user.
When meeting the migration trigger condition, the migration generating means of the migration management equipment are to meeting the migration
Virtual base station corresponding to trigger condition, generate migration request；The virtual base met corresponding to the migration trigger condition
Stand Ji Wei first virtual base station.
Preferably, first virtual base station 1 can also include Base station detecting apparatus (not shown) and migration dispensing device
(not shown)；Base station detecting apparatus detects the migration trigger condition corresponding with first virtual base station；When being moved described in satisfaction
When moving trigger condition, the migration dispensing device of first virtual base station 1 is sent please on the migration of first virtual base station
Ask to the migration management equipment.
Specifically, Base station detecting apparatus is for example, by periodically from described in management program/or the collection of the first virtual base station
The resource using information of first virtual base station, according to collected resource using information, whether detect first virtual base station
Meet the migration trigger condition migrated；Wherein, the migration trigger condition includes but is not limited to any one of following：
The resource of-first virtual base station is used below or above certain threshold value；For example, work as first virtual base station
Resource when being used below certain threshold value, then it is assumed that first virtual base station needs to be migrated, to reach the purpose of energy-conservation；
- other certain trigger conditions according to set by system；For example, when reach first virtual base station or with it is described
, can be described first virtual when the corresponding BBU of first virtual base station or system etc. need to carry out the time of software/hardware maintenance
Safeguarded again after the migration of base station, so as to not interfere with serviced user, realize the transparent migration to user.
When meeting the migration trigger condition, the migration dispensing device of first virtual base station will be described on described
The migration request of first virtual base station is sent to the migration management equipment.Included in the migration request with it is described first virtual
The corresponding id information in base station, resource using information etc..
It is highly preferred that the first virtual base station 1 also includes refusal device (not shown)；When first virtual base station is got
After migration request on first virtual base station, refusal device refusal hand-off request.
Specifically, moved when first virtual base station receives by what the migration management equipment 3 was generated on described
After moving the migration request of the first virtual base station corresponding to trigger condition, or when first virtual base station is to the migration tube
After reason equipment 3 sends the migration request on the first virtual base station corresponding to the migration trigger condition generated as itself,
Refuse device and refuse any hand-off request, to avoid influence of the new hand-off request to transition process.
Wherein, the hand-off request includes but is not limited to any one of following or multinomial：
- S1 hand-off requests；
- X2 hand-off requests.
Dispensing device 11 sends corresponding migration relevant parameter to second virtual base station.
Specifically, when the migration management equipment is according to the migration request on the first virtual base station, it is determined that for receiving
After second virtual base station of the migration of first virtual base station, dispensing device 11 by it is corresponding migration relevant parameter send to
Second virtual base station.
Wherein, the migration relevant parameter includes the related letter that BBU need to use when realizing base station using virtualization technology
Breath.
Preferably, the migration relevant parameter includes one or more in two categories below information：
I) cell-related information (Cell-specific), for example, system information block (SIB, Service Information
Block), the parameter such as S1/X2IEs, O＆M information (operation and maintenance)；
Ii) user equipment relevant information (UE-specific), for example, key KeNB, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI symbol
(C-RNTI, Cell Radio Network Temporary Identifier), it is discontinuous to receive (DRX, Discontinuous
Reception) cycle, RAB (RAB, Radio Access Bearer), SAE- temporary mobile subscriber identitys
(S-TMSI, SAE-Temporary Mobile Subscriber Identity) etc..
Due to those skilled in the art should can according to actual conditions and demand to determine by BBU to realize virtual base station when
Need to obtain which virtual base station parameter, it is only for example herein, repeat no more.
Correspondingly, reception device 21 receives the moving corresponding to first virtual base station that first virtual base station is sent
Phase shift related parameter, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station.
Configuration device 22 configures its corresponding communication tunnel according to the migration relevant parameter.
Specifically, configuration device 22 obtains the corresponding migration relevant parameter transmitted by first virtual base station, according to
The migration relevant parameter, is configured to corresponding communication tunnel.Here, the communication tunnel is including but not limited to following
Any one is multinomial：
I) uplink path；
Ii) GTP tunnel, i.e., based on the tunnel protocol GT P in GPRS (General Packet Radio Service)
The communication tunnel that (GPRS Tunnel Protocol) is established.
First switching device 12 and the second switching device 23 coordinate, according to the communication tunnel, by the described first virtual base
Data path corresponding to standing and interface switch to second virtual base station..
Specifically, the first switching device 12 and the second switching device 23 coordinate, according to the communication tunnel, based on predetermined
Communication protocol, data path and interface corresponding to first virtual base station are switched into second virtual base station.Here, institute
State the one or more that data path and interface include but is not limited in I/Q data path, S1 interfaces, X2 interface.
Preferably, the first switching device 12 and the second switching device 23 coordinate, and according to the communication tunnel, described first is empty
Intend base station and corresponding I/Q data path is switched into second virtual base station；First switching device 12 and the second switching device 23
Coordinate, according to the communication tunnel, corresponding S1/X2 interfaces are switched to the described second virtual base by first virtual base station
Stand.Here, the I/Q data is orthogonal data in the same direction.
Specifically, the switching of I/Q data path is carried out according to the communication tunnel, first virtual base station first.Reference
Fig. 5, the switching of I/Q data path be as the IQ interchangers (IQ switch) in Fig. 5 according to transmitted by first virtual base station
IQ switching commands complete.Wherein, first virtual base station and the second virtual base station are located at the first BBU and second respectively
On BBU.
Here, by taking the switching of in general I/Q data path as an example：
1) after the completion of communication tunnel foundation, existing S1/X2 links are redirected to described second by the first virtual base station
Virtual base station；
2) first virtual base station sends I/Q data path switching command to IQ interchangers；
3) I/Q data path is switched to second virtual base station by the IQ interchangers.
In Figure 5, the connection between IQ interchangers and the first virtual base station and IQ interchangers and the second virtual base station it
Between connection be generally optical fiber connection.
Those skilled in the art will be understood that the mode of above-mentioned switching I/Q data path is only for example, and other are existing or modern
The mode for the switching I/Q data path being likely to occur afterwards is such as applicable to the present invention, also should be included in the scope of the present invention with
It is interior, and be incorporated herein by reference herein.
After the completion of I/Q data path switching, first virtual base station proceeds by the switching of S1/X2 interfaces.Ginseng
According to Fig. 5, the switching in the uplink/downlink path of S1/X2 interfaces is by the S-GW (gateway, Serving Gateway) in Fig. 5
What the corresponding switching command according to transmitted by first virtual base station was completed.
Here, in actual applications, the switching of the S1/X2 interfaces mainly includes the switching to S1 downlink paths.Here,
By taking the switching of S1 downlink paths as an example：
1) the first virtual base station sends downlink path and handovers request to MME (mobility management entity)；
2) MME sends downlink path renewal request according to the downlink path handover request to S-GW；
3) S1 downlink paths are switched to second virtual base station by the S-GW.
Those skilled in the art will be understood that the mode of above-mentioned S1/X2 interfaces switching is only for example, and other are existing or modern
The mode for the S1/X2 interfaces switching being likely to occur afterwards is such as applicable to the present invention, should also be included within the scope of the present invention,
And it is incorporated herein by reference herein.
Fig. 4 shows in accordance with a preferred embodiment of the present invention a kind of by migration management equipment, the first virtual base station and the
Two virtual base stations coordinate the system schematic for being used to realize the dynamic migration of virtual base station in BBU ponds realized；Wherein, it is described to move
Moving management equipment 3 includes managing device 31 '；First virtual base station 1 includes dispensing device 11 ', the first switching device 12 ', wherein,
Dispensing device 11 ' also includes extension fixture 111 '；Second virtual base station 2 is cut including reception device 21 ', configuration device 22 ', second
Changing device 23 ', recovery device 24 '.Specifically, migration request of the basis of managing device 31 ' on the first virtual base station, it is determined that with
In the second virtual base station of the migration for receiving first virtual base station, wherein, first virtual base station is empty with described second
Intend base station and be belonging respectively to BBU different in BBU ponds；Dispensing device 11 ' sends corresponding migration relevant parameter to described second
Virtual base station, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；Extend
Device 111 ' sends discontinuous reception cycle stretch-out instruction to the user equipment corresponding to first virtual base station；Receive dress
The migration relevant parameter corresponding to first virtual base station that 21 ' reception first virtual base stations are sent is put, wherein, it is described
First virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；Configuration device 22 ' is moved according to
Phase shift related parameter configures its corresponding communication tunnel；First switching device 12 ' and the second switching device 23 ' coordinate, according to described
Communication tunnel, data path and interface corresponding to first virtual base station are switched into second virtual base station；Recover dress
Put 24 ' and send discontinuous reception cycle recovery instruction to the user equipment.
Here, the managing device 31 ' of the migration management equipment 3；The dispensing device 11 ' of first virtual base station 1, first cut
Changing device 12 '；Reception device 21 ', configuration device 22 ', the second switching device 23 ' of second virtual base station 2, with it is right in Fig. 3
Answer device same or similar, therefore will not be repeated here, and be incorporated herein by reference.
Those skilled in the art will be understood that for purposes of illustration only, herein by the migration management equipment, the first virtual base station
Cooperation explanation is carried out with the second virtual base station, the migration management equipment, the first virtual base station and the second virtual base station can match somebody with somebody
Close the dynamic migration for realize virtual base station in BBU ponds；Equipment that can also be individually with other adaptations coordinates, to realize
The dynamic migration of virtual base station in BBU ponds.For example, the migration management equipment can be independently of first virtual base station and institute
The second virtual base station is stated, is engaged with other base stations, to realize the dynamic migration of virtual base station in BBU ponds.
Wherein, virtual base station of the present invention is included by baseband signal processing unit BBU (Baseband Signal
Processing Unit) virtual base station realized using virtualization technology.Wherein, each BBU can realize one or more
Virtual base station.
Wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station.
Extension fixture 111 ' prolongs to the user equipment transmission discontinuous reception cycle corresponding to first virtual base station
Long instruction.
Specifically, extension fixture 111 ' sends discontinuous receive to the user equipment corresponding to first virtual base station
(DRX) cycle stretch-out instructs so that the DRX cycle increase of the user equipment, it is ensured that the user equipment is converted into dormancy shape
State, to reduce influence of the transition process to the user equipment as far as possible.Here, the user equipment include active user equipment with
One or more in inactive users equipment.
Recovery device 24 ' sends discontinuous reception cycle recovery instruction to the user equipment.
Specifically, after the completion of transition process, recovery device 24 ' sends discontinuous reception (DRX) to the user equipment
Cycle recovers instruction so that the user equipment recovers normal DRX cycle.
Preferably, the first switching device 12 ' also includes state transmitting element (not shown) and the second switching device 23 ' is also wrapped
State processing unit (not shown) is included, wherein, state transmitting element is according to the communication tunnel, by corresponding traffic state
Information is sent to second virtual base station；State processing unit is based on the traffic state information, performs and the industry
The corresponding processing operation of transmission state information of being engaged in.
Specifically, according to the communication tunnel, state transmitting element is by the business corresponding to first virtual base station
Transmission state information is sent to second virtual base station, here, the traffic state information includes but is not limited to link
Data and/or status information；Such as buffering downlink data, extended receiver state etc..So as to realize to being presently in
The collection and forwarding of the business datum of reason, ensure that user data is not lost, accomplish seamless switching.
Correspondingly, traffic state information of the state processing unit transmitted by based on first virtual base station, according to
The difference of the traffic state information, perform corresponding such as response or continue with operation, so as to ensure that service
Quality, accomplish seamless switching.
Preferably, after the completion of migration, migration management equipment also includes shutoff device (not shown), wherein, when described
After one or more virtual base stations on BBU corresponding to one virtual base station are migrated, shutoff device is closed and described first
The corresponding BBU of virtual base station.
Specifically, after one or more virtual base stations on the BBU corresponding to first virtual base station are migrated,
Then shutoff device sends out code to the BBU, closes the BBU corresponding with first virtual base station.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.This
Outside, it is clear that the word of " comprising " one is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in device claim is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (8)
1. a kind of method for realizing the dynamic migration of virtual base station in BBU ponds, wherein, this method comprises the following steps：
A migration managements equipment is according to the migration request on the first virtual base station, it is determined that for receiving first virtual base station
Migration the second virtual base station, wherein, first virtual base station and second virtual base station are belonging respectively in BBU ponds not
Same BBU；
First virtual base station described in b sends corresponding migration relevant parameter to second virtual base station；
Second virtual base station described in c configures its corresponding communication tunnel according to the migration relevant parameter；
Corresponding data path and interface are switched to second void by d according to the communication tunnel, first virtual base station
Intend base station；
- after one or more virtual base stations on the BBU corresponding to first virtual base station are migrated, close with it is described
The corresponding BBU of first virtual base station.
2. according to the method for claim 1, wherein, this method also includes：
- migration management the equipment detects whether the migration trigger condition for meeting progress virtual base station migration；
Wherein, this method also includes：
- when meeting the migration trigger condition, the migration management equipment generation is on corresponding to the migration trigger condition
The first virtual base station migration request.
3. according to the method for claim 1, wherein, this method also includes：
- the first virtual base station detection migration trigger condition corresponding with first virtual base station；
Wherein, this method also includes：
- when meeting the migration trigger condition, first virtual base station sends the migration on first virtual base station
Ask to the migration management equipment.
4. according to the method for claim 3, wherein, this method also includes：
- first virtual base station refusal hand-off request.
5. method according to any one of claim 1 to 4, wherein, the step b also includes：
- first virtual base station discontinuous receive the cycle and prolonged to being sent with the user equipment corresponding to first virtual base station
Long instruction；
Wherein, this method also includes after the step d：
- second virtual base station sends to the user equipment and discontinuous receive the cycle and recover instruction.
6. method according to any one of claim 1 to 4, wherein, the step d includes：
- corresponding I/Q data path switched to by the described second virtual base according to the communication tunnel, first virtual base station
Stand；
- corresponding S1/X2 interfaces are switched to by the described second virtual base according to the communication tunnel, first virtual base station
Stand.
7. method according to any one of claim 1 to 4, wherein, step d also includes：
- sent corresponding traffic state information to described second according to the communication tunnel, first virtual base station
Virtual base station；
Wherein, this method also includes：
- second virtual base station is based on the traffic state information, performs relative with the traffic state information
The processing operation answered.
8. a kind of communication system for being used to realize the dynamic migration of virtual base station in BBU ponds, wherein, the communication system includes moving
Move management equipment, at least one first virtual base station, and at least one second virtual base station；
Wherein, the migration management equipment includes managing device and shutoff device：
The managing device is used for according to the migration request on first virtual base station, it is determined that empty for receiving described first
Intend second virtual base station of the migration of base station, wherein, first virtual base station belongs to respectively with second virtual base station
The different BBU in BBU ponds；
The shutoff device is used for when one or more virtual base stations on the BBU corresponding to first virtual base station are moved
After shifting, the BBU corresponding with first virtual base station is closed；
First virtual base station includes dispensing device and the first switching device：
The dispensing device sends the migration relevant parameter corresponding to first virtual base station to second virtual base station,
Wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；
First switching device is used to corresponding data path and interface switching to second virtual base station；
Second virtual base station includes reception device, configuration device and the second switching device：
The reception device is used to receive the migration phase corresponding to first virtual base station that first virtual base station is sent
Related parameter, wherein, first virtual base station is belonging respectively to BBU different in BBU ponds from second virtual base station；
The configuration device is used to configure its corresponding communication tunnel according to the migration relevant parameter；
Second switching device is used for according to the communication tunnel, by data path corresponding to first virtual base station and connects
Mouth switches over.
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| KR102010509B1 (en) | 2014-12-12 | 2019-08-13 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Method for enhancing processing capability of base station, baseband device, base station, and system |
| CN106488497A (en) * | 2015-08-28 | 2017-03-08 | 中兴通讯股份有限公司 | A kind of changing method, base station server |
| CN106900013B (en) * | 2015-12-21 | 2020-02-21 | 上海诺基亚贝尔股份有限公司 | Method, device and system for resource management in BBU of CRAN system |
| US11109437B2 (en) | 2015-12-22 | 2021-08-31 | Apple Inc. | Method and migration manager component for transferring an application and system for managing terminal device communication connections |
| CN112291806B (en) * | 2020-11-03 | 2023-03-14 | 比科奇微电子(杭州)有限公司 | Service migration method and device |
| CN116801262A (en) * | 2022-03-16 | 2023-09-22 | 中兴通讯股份有限公司 | Configuration data migration method of base station, computer equipment and storage medium |
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