CN104080192A - Connection redirecting method, device and system - Google Patents
Connection redirecting method, device and system Download PDFInfo
- Publication number
- CN104080192A CN104080192A CN201310110393.7A CN201310110393A CN104080192A CN 104080192 A CN104080192 A CN 104080192A CN 201310110393 A CN201310110393 A CN 201310110393A CN 104080192 A CN104080192 A CN 104080192A
- Authority
- CN
- China
- Prior art keywords
- base station
- connection
- bbu
- information
- public
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention aims to provide a connection redirecting method, device and system. The method includes the steps that first indication information from a migration management device is received and includes base station identification information for a second base station to which connection is redirected; the first base station and the second base station are achieved through different BBUs respectively; the private connection between the first base station and the second base station is built through a first private address according to the first indication formation; transmission control information of the first base station is sent to the second base station through the private connection; the public address is disused. The connection redirecting method, device and system have the advantages that multiple virtual base stations can be effectively integrated to the same BBU, and thus energy consumption of the communication network is reduced greatly. Redirecting achieved through the method is totally transparent for other network elements, and the built public connection does not discontinue.
Description
Technical field
The present invention relates to communication technical field, relate in particular to and a kind ofly to connecting, carry out redirected methods, devices and systems.
Background technology
Intel Virtualization Technology (Virtualization Technology) be current conventional, in the hardware cell of a multinuclear, support a plurality of means of base station independently to each other, it is according to the requirement of corresponding air-interface standard, for each virtual base station distributes enough computer resources, to guarantee separate in operating system aspect of each virtual base station.
Known according to statistics, in wireless access network, mobile network's the fluctuation of load is very large.For example, the load of each base station conventionally will be well below the load of the time of working by day in the second half of the night time.Yet in the prior art, even if now virtual base station needs work to be processed few, the energy that its host's machine will consume is still few with the energy difference that need to consume in the period that is busy with one's work.In fact, if a plurality of hosts can be incorporated on a hardware cell by the virtual base station on different hardware unit, can reduce greatly the energy resource consumption of wireless access network, make its environmental protection more.
Yet technology can not address this problem at present.And in some other technologies fields, for example, in traditional networking technology area, often adopt this technology of internal memory pre-copy (memory pre-copy) to realize the integration of virtual machine, no matter therefore and this kind of technology can be transplanted in wireless access network, this kind of technology itself just has larger defect.Known through experiment, adopt similar internal memory pre-copy technology to integrate LTE PUSCH stack, will make virtual machine environment (for example VMware or KVM platforms) have the time of several seconds nearly to use, for each virtual base station that real time service need to be provided, within the so long time, can not provide service is cannot be received.
In addition, conventionally between the neighbor cell of virtual base station, exist X2 to connect, between virtual base station and mobile management entity (MME, Mobility Management Entity) and SGW (S-GW, Signaling Gateway), exist S1 to connect.In an evolved universal terrestrial wireless access (E-UTRA, Evolved Universal Terrestrial Radio Access) network, between base station and core net, exist more S1 to connect.All these network elements can be from different suppliers, therefore, if virtual base station is moved, guarantee that transition process is to other network elements, such as the transparency of MMEs, adjacent eNB etc., and still being survived being connected between the base station of being moved and each network element, is very important.
Summary of the invention
The object of this invention is to provide and a kind ofly to connecting, carry out redirected methods, devices and systems.
According to an aspect of the present invention, provide a kind of and carry out redirected method for the public connection relevant to the first base station to communication network, wherein, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network, said method comprising the steps of:
A receives the first indication information from migration management equipment, and described the first indication information comprises the base station identification information of the second base station for being redirected to, and wherein, described the first base station and described the second base station are realized by different BBU respectively;
B is according to described the first indication information, adopts the first private address, set up with described the second base station between privately owned connection;
C, by described privately owned connection, is sent to described the second base station by the control information transmission of this first base station;
Wherein, described method is further comprising the steps of:
-stop using described public address.
According to an aspect of the present invention, provide a kind of for the public connection of communication network being redirected to the method for the second base station, wherein, described public connection comprises that the first base station is based on public address, with being connected of setting up between other network elements in described communication network, described the first base station and described the second base station are realized by different BBU respectively, wherein, said method comprising the steps of:
A receives the second indication information from migration management equipment, and wherein, described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected;
B, according to described the second indication information, adopts the second private address, sets up privately owned connection with described the first base station;
C, via described privately owned connection, receives the control information from described the first base station;
D enables described public address, and to the network issue physical address relevant information corresponding with described public address information, to communicate by described public connection and described other network elements.
According to an aspect of the present invention, provide a kind of public connection for subsidiary communications network to carry out redirected method, wherein, said method comprising the steps of:
-according to the load relevant information of all BBU in described communication network, determine the BBU that the connection on the first base station that need to realize it is redirected, and two BBU corresponding with a described BBU, described the 2nd BBU is redirected rear the second base station pointed for realizing described connection;
-to described the 2nd BBU, send base station information, to realize described the second base station on described the 2nd BBU, wherein, realize with the virtual base station parameter of described the first base station based on identical described the second base station;
-to described the first base station, send the first indication information, and send the second indication information to described the second base station, described the first indication information comprises the base station identification information of the second base station for being redirected to, and described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected.
According to an aspect of the present invention, a kind of the first base station is also provided, wherein, described the first base station is for to communication network, relative public connection is redirected, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network, described the first base station comprises:
First receiving device, for receiving the first indication information from migration management equipment, described the first indication information comprises the base station identification information of the second base station for being redirected to, and wherein, described the first base station and described the second base station are realized by different BBU respectively;
The first apparatus for establishing, for according to described the first indication information, adopts the first private address, set up with described the second base station between privately owned connection;
The first dispensing device, for by described privately owned connection, is sent to described the second base station by the control information transmission of this first base station;
Stop device, for stopping using described public address.
According to an aspect of the present invention, a kind of the second base station is also provided, it is for being redirected to self by the communication network public connection relevant to the first base station, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network, described the first base station and described the second base station are realized by different BBU respectively, and wherein, described the second base station comprises:
The second receiving system, for receiving the second indication information from migration management equipment, wherein, described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected;
The second apparatus for establishing, for according to described the second indication information, adopts the second private address, sets up privately owned connection with described the first base station;
The 3rd receiving system, for receiving the control information from described the first base station;
Starting drive, for enabling described public address, and to the network issue physical address relevant information corresponding with described public address information, to communicate by described public connection and described other network elements.
According to an aspect of the present invention, provide a kind of migration management equipment, for the public connection of subsidiary communications network, be redirected, wherein, described migration management equipment comprises:
Directed determining device, be used for according to the load relevant information of all BBU of described communication network, determine the BBU that the connection on the first base station that need to realize it is redirected, and two BBU corresponding with a described BBU, described the 2nd BBU is redirected rear the second base station pointed for realizing described connection;
The first prompting dispensing device, sends base station information to described the 2nd BBU, and to realize described the second base station on described the 2nd BBU, wherein, realize with the virtual base station parameter of described the first base station based on identical described the second base station;
The second prompting dispensing device, for sending the first indication information to described the first base station, and send the second indication information to described the second base station, described the first indication information comprises the base station identification information of the second base station for being redirected to, and described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected.
According to an aspect of the present invention, provide a kind of BBU, wherein, described BBU is used for realizing described the first base station, and/or described the second base station.
According to an aspect of the present invention, provide a kind of communication system, wherein, described communication system comprises described migration management equipment, and at least one is for realizing a BBU of described the first base station, and at least one is for realizing the 2nd BBU of described the second base station.
Compared with prior art, the present invention has the following advantages: can effectively a plurality of virtual base stations be incorporated into same BBU upper, thereby greatly reduce the energy that communication network consumes.By preparing private address for base station, set up privately owned connection, thereby make to connect, can after being ready to, the second base station be redirected rapidly, and, that according to the present invention, realizes is redirected, for other network elements, be transparent completely, data are transmitted in the public connection that other network elements can continue by having set up, and can not be interfered.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 has illustrated according to of the present invention a kind of for carrying out redirected method flow diagram to connecting;
Fig. 2 has illustrated according to of the present invention a kind of for connection being carried out to the structural representation of redirected system;
Fig. 3 has illustrated the communication system schematic diagram before connection is redirected according to an embodiment of the invention;
Fig. 4 has illustrated the communication system schematic diagram after connection is redirected according to an embodiment of the invention.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 has illustrated according to of the present invention and a kind ofly for the public connection to communication network, has carried out redirected method.
The method according to this invention, comprise step S11, the step S12, step S13, the step S14 that by the first base station, are carried out, step S21, the step S22, step S23, the step S24 that by the second base station, are carried out, and the step S31 being carried out by migration management equipment, step S32 and step S33.
Base station according to the present invention comprises the virtual base station that adopts Intel Virtualization Technology to realize by BBU.Wherein, each BBU can realize one or more virtual base stations.
Wherein, described the first base station and described the second base station virtual base station for being realized by Intel Virtualization Technology by different BBU respectively.And described the first base station has identical public address and port with described the second base station, wherein, the first base station also has at least one first private address, and the second base station also has at least one second private address.
Wherein, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network.
Preferably, according to the first base station of the present invention, and there is respectively public connection between one or more other network elements (such as MME, S-GW or other adjacent base stations etc.) in communication network.
Wherein, according to adopting predefined communication protocol to carry out transfer of data between each network element in communication network of the present invention.Preferably, according to adopting SCTP (SCTP in communication network of the present invention, Stream Control Transmission Protocol) carry out transfer of data, and, according to connection of the present invention, comprise SCTP coupling (SCTP association).
With reference to Fig. 1, in step S31, migration management equipment is according to all Base Band Unit (BBU in described communication network, Baseband Unit) load relevant information, determine the BBU that the connection on the first base station that need to realize it is redirected, and two BBU corresponding with a described BBU, described the 2nd BBU is redirected rear the second base station pointed for realizing described connection.
Wherein, described load relevant information comprises the information of the loading condition that is used to indicate BBU, and preferably, described load relevant information can represent by following any form:
1) load scoring.For example, adopt mark or percentage recently to represent the loading level of BBU, the larger expression load of fractional value more heavily etc.;
2) grade of load, for example, is divided into one to five grade from light to heavy by load, and wherein first order load is the lightest, level V pack heaviest etc.
Preferably, described load relevant information based on below at least any one determine:
1) base station number on BBU;
2) number of connection on BBU.
More preferably, described migration management equipment also can be determined its load relevant information further combined with the performance-related information of BBU.Wherein, described performance-related information comprises the information of the runnability that is used to indicate BBU, and preferably, described performance-related information includes but not limited to following at least any one:
1) BBU processor relevant information;
2) BBU memory relevant information;
3) the energy resource consumption relevant information of BBU.
For example, according to the performance of the number of connection on BBU and current BBU transmission data, determine its load relevant information etc.
Particularly, migration management equipment is according to the load relevant information of each BBU, and the redirected decision rule based on predetermined, determines and the connection on each BBU need to be redirected to other BBU.
According to the first example of the present invention, with reference to Fig. 3, three virtual base station BS1 in communication network, BS2 and BS3 are respectively by B1, these three BBU of B2 and B3 realize, and, the load relevant information that migration management equipment obtains these three BBU is respectively 2.5%, 45% and 30.5%, migration management equipment is according to default redirected threshold value 30%, the load relevant information of judgement B1 is less than predetermined threshold, and determine that remaining B2 and two BBU of B3 all have enough surplus resources, migration management equipment is determined and the connection of the base station BS on B1 1 need to be redirected, that is, using B1 as a BBU, and, the random B2 that selects is as two BBU corresponding with B1, by B2, realize the connection of base station BS 1 is redirected to rear the second base station pointed.
Then,, in step S32, migration management equipment sends base station information to described the 2nd BBU, to realize the second base station on described the 2nd BBU.Wherein, realize with the virtual base station parameter of described the first base station based on identical described the second base station.Wherein, described base station information is for pointing out the 2nd BBU to realize described second base station similar to the first base station.
Preferably, described base station information comprises the information that the first base station is relevant, includes but not limited to following at least any one:
1) base station identification information of the first base station, for example, title that IP address, base station, base station are external etc.
2) virtual base station parameter used an etc. when BBU realizes the first base station, wherein, described virtual base station parameter comprises the relevant information that BBU need use when adopting Intel Virtualization Technology to realize base station.
Preferably, described virtual base station parameter comprises following two category informations:
I) community relevant information (Cell-specific), for example, system information block (SIB, Service Information block), S1/X2 information unit (IE, information element), the parameter such as operation and maintenance (O & M, Operation & Maintenance) information.
Ii) subscriber equipment relevant information, for example, key K eNB, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI, Cell Radio Network Temporary Identifier), discontinuous reception (DRX, Discontinuous Reception), RAB (RAB, Radio Access Bearer) etc.
Because those skilled in the art should determine while realizing virtual base station by BBU to obtain which virtual base station parameter according to actual conditions and demand, only for example at this, repeat no more.
Particularly, described migration management equipment sends base station information to described the 2nd BBU, with on described the 2nd BBU, realize the mode of the second base station include but not limited to following any:
1) when described base station information comprises base station identification information, described the 2nd BBU and described the first base station communicate, to obtain the virtual base station parameter being adopted when a BBU realizes described the first base station, and realize the second base station based on this virtual base station parameter;
2), when described base station information comprises virtual base station parameter, described the 2nd BBU directly realizes described the second base station based on described virtual base station parameter.
Because those skilled in the art should determine the mode that realizes virtual base station by BBU according to actual conditions and demand, do not repeat them here.
Then, in step S33, migration management equipment sends the first indication information to described the first base station, and sends the second indication information to described the second base station.Wherein, described the first indication information comprises the base station identification information of the second base station for being redirected to, and described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected.
Wherein, described base station identification information can be used for locating corresponding base station and the needed information that connects with it, and preferably, described base station identification information includes but not limited to following at least any one:
1) network address information of base station, preferably, the private address that the network address information of described base station is base station, for example, the first private address of the first base station, again for example, the second private address of the second base station etc.;
2) MAC Address of the corresponding hardware device in base station, such as MAC Address of the corresponding BBU in base station etc.
3) cell identity information (Cell ID).
Preferably, at least one second private address that comprises the second base station in described the first indication information, at least one first private address that comprises the first base station in described the second indication information.
More preferably, in described the first indication information and described the second indication information information, also comprise respectively the port information corresponding with each address information.
More preferably, in described the first indication information, also comprise and be used to indicate the first private address that the first base station can be used; In described the second indication information, also comprise and be used to indicate the second private address that the second base station can be used.
More preferably, described the first indication information is identical with described the second indication information.For example, the first indication information and the second indication information include the first private address of described the first base station, and the second private address of the second base station etc.
Continuation describes the first example of the present invention, the first base station BS 1 is current there is respectively three the public Conec1 of connection, Conec2 and Conec3 by between public address IP0 and 3 other network elements M1, M2, M3, wherein, Conec1 is that S1 is connected with Conec2, and Conec3 is that X2 connects.Migration management equipment sends to the B2 as the 2nd BBU the base station identification information that comprises the first base station in step S32, Base Band Unit B2 is based on described base station identification information, by Intel Virtualization Technology realize second base station BS 1 similar to the first base station BS 1 ', and to migration management equipment feed back this second base station BS 1 ' base station identification information, migration management equipment respectively to the first base station BS 1 send comprise the second base station BS 1 ' the first indication information of base station identification information, the second indication information to the base station identification information that the second base station BS 1 ' transmission comprises the first base station BS 1.
Then,, in step S11, the first base station receives the first indication information from migration management equipment.
In step S21, the second base station receives the second indication information from migration management equipment.
Wherein, between step S11 and step S21, there is no sequencing.
In step S22, the second base station, according to described the second indication information, adopts the second private address, sets up privately owned connection with described the first base station.
In step S12, the first base station is according to described the first indication information, adopts the first private address, set up with described the second base station between privately owned connection.
It should be noted that, the mode that virtual base station according to the present invention obtains its corresponding private address include but not limited to following any:
1), when BBU realizes virtual base station by Intel Virtualization Technology, be default one or more the second private address of virtual base station;
2) when virtual base station receives the indication information from migration management equipment, from this indication information, obtain self available private address.
For example, while comprising the second private address in the second indication information, the second base station obtains self the second available private address in the second indication information from migration management equipment; For example have, while comprising the first private address in the first indication information, the first base station obtains self first available private address etc. in the first indication information from migration management equipment.
Then,, in step S13, the first base station, by described privately owned connection, is sent to described the second base station by the control information transmission of this first base station.
Wherein, described control information transmission is included in the second base station and carries out required control information of using in transmitting procedure based on the presently used scheduled transmission agreement of communication network.
Preferably, when communication network adopts Stream Control Transmission Protocol, described control information transmission comprises the information of SCTP control block.
Then,, in step S23, the second base station receives the control information from described the first base station.
Continuation describes the first example of the present invention, in the first indication information that migration management equipment sends and the second indication information, include: the first private address IP1 that the first base station BS 1 can be used and the second base station BS 1 ' the second available private address IP2, the first base station BS 1 and the second base station BS 1 ' adopt respectively IP1 and IP2 to set up privately owned connection, and, the first base station BS 1 from the SCTP endpoint of self, extract the information of SCTP control block and be sent to the second base station BS 1 ', the second base station BS 1 ' receive the information of this SCTP control block and write in the SCTP endpoint of self.
Then, in step S14, the first base station public address of stopping using.
Preferably, described the first base station first stops the transfer of data of carrying out via public connection, the connection status relevant information of each public connection is sent to the second base station, and stops using public address.
Wherein, described connection status relevant information is for characterizing the relevant information of the data transmission state of public connection, for example, transmission sequence number (TSN, transmission sequence number), stream sequence number (SSN, Stream Sequence number), local verification label (1ocal Verification Tag), peer node are verified the information such as label (peer Verification Tag).
It should be noted that, step S14 carries out and all can after step S11, before step S24.
More preferably, the first base station can stop the transfer of data of carrying out via public connection after step S11, and the connection status relevant information of each public connection is sent to the second base station, and after step S13, and stopped using public address before step S24.
Then, in step S24, described public address is enabled in the second base station, and to the network issue physical address relevant information corresponding with described public address, to communicate by described public connection and described other network elements.
Wherein, described physical address relevant information is used to indicate the information relevant to the hardware address of the second corresponding BBU in base station, and preferably, described physical address relevant information comprises the MAC Address of described the second corresponding BBU in base station.
Particularly, described public address is enabled in the second base station, and using the MAC Address of the BBU corresponding with the second base station as issuing with physical message corresponding to public address, so that the corresponding physical address information of this public address in each other network element flush buffers in communication network, to come to communicate with this second base station by this public address and corresponding MAC Address.
Preferably, the second base station receives the connection status relevant information from each public connection of the first base station, and be stored in the SCTP endpoint of self, then, by gratuitous ARP (GARP, Gratuitous Address Resolution Protoco1), to the MAC Address of communication network broadcast public address and the second corresponding hardware in base station, by this each public connection and other network elements, communicate continuing.
Continuation describes the first example of the present invention, the first base station BS 1 is in step S14, first stop carrying out transfer of data by public connection Conec1, Conec2 and Conec3, respectively the connection state information of these three public connections is sent to the second base station, and inactive public address IP0; Then, the second base station receive with Conec1, Conec2 and these three public connections of Conec3 respectively corresponding connection state information and write self SCTP endpoint in after, enable IP0, and by GAPR information to communication network broadcast public address IP0 and the MAC Address of self, other webpages can be communicated based on public address IP0 and corresponding MAC Address and the second base station.Then,, with reference to Fig. 4, the control information transmission of the second base station based on obtained, continues to communicate with other network elements M1, M2, M3 respectively by public connection Conec1, Conec2 and Conec3.
As one of preferred version of the present invention, the method according to this invention, the first base station also performs step S15 (not shown), and the second base station also performs step S25 (not shown).
In step S15, the first base station by received, from the transmission data of described one or more other network elements, via described privately owned connection, be sent to described the second base station.
Preferably, while adopting Stream Control Transmission Protocol in communication network, described transmission data comprise the information of the SCTP chunk that the first base station has received.
Particularly, the first base station is extracted SCTP chunk and is sent to the second base station via privately owned connection in the SCTP endpoint of self.
Then,, in step S25, the second base station, via described privately owned connection, receives the transmission data from described the first base station.
Particularly, the second base station, via privately owned connection, obtains SCTP chunk and writes in the SCTP endpoint of self.
The method according to this invention, can effectively be incorporated into a plurality of virtual base stations on same BBU and realize, thereby greatly reduces the energy that communication network consumes.By preparing private address for base station, set up privately owned connection, thereby make to connect, can after being ready to, the second base station be redirected rapidly, and, that according to the present invention, realizes is redirected, for other network elements, be transparent completely, data are transmitted in the public connection that other network elements can continue by having set up, and can not be interfered.
Fig. 2 has illustrated according to of the present invention a kind of for the public connection of communication network being carried out to the structure drawing of device of redirected system.
System according to the present invention comprises the first base station 1, the second base station 2 and migration management equipment 3.Wherein, the first base station 1 comprises first receiving device 11, the first apparatus for establishing 12, the first dispensing device 13 and stop device 14, the second base station comprises the second receiving system 21, the second apparatus for establishing 22, the 3rd receiving system 23 and starting drive 24, and migration management equipment comprises directed determining device 31, the first prompting transmission information 32 and the second prompting transmission information 33.
Base station according to the present invention comprises the virtual base station that adopts Intel Virtualization Technology to realize by BBU.Wherein, each BBU can realize one or more virtual base stations.
Wherein, described the first base station and described the second base station virtual base station for being realized by Intel Virtualization Technology by different BBU respectively.And described the first base station has identical public address and port with described the second base station, wherein, the first base station also has at least one first private address, and the second base station also has at least one second private address.
Wherein, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network.
Preferably, according to the first base station of the present invention, and there is respectively public connection between one or more other network elements (such as MME, S-GW or other adjacent base stations etc.) in communication network.
Wherein, according to adopting predefined communication protocol to carry out transfer of data between each network element in communication network of the present invention.Preferably, according to adopting SCTP (SCTP in communication network of the present invention, Stream Control Transmission Protoco1) carry out transfer of data, and, according to connection of the present invention, comprise SCTP coupling (SCTP association).
With reference to Fig. 2, directed determining device 31 in migration management equipment 3 is according to all Base Band Unit (BBU in described communication network, Baseband Unit) load relevant information, determine the BBU that the connection on the first base station that need to realize it is redirected, and two BBU corresponding with a described BBU, described the 2nd BBU is redirected rear the second base station pointed for realizing described connection.
Wherein, described load relevant information comprises the information of the loading condition that is used to indicate BBU, and preferably, described load relevant information can represent by following any form:
1) load scoring.For example, adopt mark or percentage recently to represent the loading level of BBU, the larger expression load of fractional value more heavily etc.;
2) grade of load, for example, is divided into one to five grade from light to heavy by load, and wherein first order load is the lightest, level V pack heaviest etc.
Preferably, described load relevant information based on below at least any one determine:
1) base station number on BBU;
2) number of connection on BBU.
More preferably, described directed determining device 31 also can be determined its load relevant information further combined with the performance-related information of BBU.Wherein, described performance-related information comprises the information of the runnability that is used to indicate BBU, and preferably, described performance-related information includes but not limited to following at least any one:
1) BBU processor relevant information;
2) BBU memory relevant information;
3) the energy resource consumption relevant information of BBU.
For example, according to the performance of the number of connection on BBU and current BBU transmission data, determine its load relevant information etc.
Particularly, directed determining device 31 is according to the load relevant information of each BBU, and the redirected decision rule based on predetermined, determines and the connection on each BBU need to be redirected to other BBU.
According to the first example of the present invention, with reference to Fig. 3, three virtual base station BS1 in communication network, BS2 and BS3 are respectively by B1, these three BBU of B2 and B3 realize, and, the load relevant information that migration management equipment obtains these three BBU is respectively 2.5%, 45% and 30.5%, directed determining device 31 is according to default redirected threshold value 30%, the load relevant information of judgement B1 is less than predetermined threshold, and determine that remaining B2 and two BBU of B3 all have enough surplus resources, directed determining device 31 is determined and the connection of the base station BS on B1 1 need to be redirected, that is, using B1 as a BBU, and, the random B2 that selects is as two BBU corresponding with B1, by B2, realize the connection of base station BS 1 is redirected to rear the second base station pointed.
Then, the first prompting dispensing device 32 sends base station information to described the 2nd BBU, to realize the second base station on described the 2nd BBU.Wherein, realize with the virtual base station parameter of described the first base station based on identical described the second base station.Wherein, described base station information is for pointing out the 2nd BBU to realize described second base station similar to the first base station.
Preferably, described base station information comprises the information that the first base station is relevant, includes but not limited to following at least any one:
1) base station identification information of the first base station, for example, title that IP address, base station, base station are external etc.
2) virtual base station parameter used an etc. when BBU realizes the first base station, wherein, described virtual base station parameter comprises the relevant information that BBU need use when adopting Intel Virtualization Technology to realize base station.
Preferably, described virtual base station parameter comprises following two category informations:
I) community relevant information (Cell-specific), for example, system information block (SIB, Service Information block), S1/X2 information unit (IE, information element), the parameter such as operation and maintenance (O & M, Operation & Maintenance) information.
Ii) subscriber equipment relevant information, for example, key K eNB, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI, Cell Radio Network Temporary Identifier), discontinuous reception (DRX, Discontinuous Reception), RAB (RAB, Radio Access Bearer) etc.
Because those skilled in the art should determine while realizing virtual base station by BBU to obtain which virtual base station parameter according to actual conditions and demand, only for example at this, repeat no more.
Particularly, described migration management equipment sends base station information to described the 2nd BBU, with on described the 2nd BBU, realize the mode of the second base station include but not limited to following any:
1) when described base station information comprises base station identification information, described the 2nd BBU and described the first base station communicate, to obtain the virtual base station parameter being adopted when a BBU realizes described the first base station, and realize the second base station based on this virtual base station parameter;
2), when described base station information comprises virtual base station parameter, described the 2nd BBU directly realizes described the second base station based on described virtual base station parameter.
Because those skilled in the art should determine the mode that realizes virtual base station by BBU according to actual conditions and demand, do not repeat them here.
Then, the second prompting dispensing device 33 sends the first indication information to described the first base station, and sends the second indication information to described the second base station.Wherein, described the first indication information comprises the base station identification information of the second base station for being redirected to, and described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected.
Wherein, described base station identification information can be used for locating corresponding base station and the needed information that connects with it, and preferably, described base station identification information includes but not limited to following at least any one:
1) network address information of base station, preferably, the private address that the network address information of described base station is base station, for example, the first private address of the first base station, again for example, the second private address of the second base station etc.;
2) MAC Address of the corresponding hardware device in base station, such as MAC Address of the corresponding BBU in base station etc.
3) cell identity information (Cell ID).
Preferably, at least one second private address that comprises the second base station in described the first indication information, at least one first private address that comprises the first base station in described the second indication information.
More preferably, in described the first indication information and described the second indication information, also comprise respectively the port information corresponding with each address information.
More preferably, in described the first indication information, also comprise and be used to indicate the first private address that the first base station can be used; In described the second indication information, also comprise and be used to indicate the second private address that the second base station can be used.
More preferably, described the first indication information is identical with described the second indication information.For example, the first indication information and the second indication information include the first private address of described the first base station, and the second private address of the second base station etc.
Continuation describes the first example of the present invention, the first base station BS 1 is current there is respectively three the public Conec1 of connection, Conec2 and Conec3 by between public address IP0 and 3 other network elements M1, M2, M3, wherein, Conec1 is that S1 is connected with Conec2, and Conec3 is that X2 connects.The first prompting dispensing device 32 sends the base station identification information that comprises the first base station to the B2 as the 2nd BBU, Base Band Unit B2 is based on described base station identification information, by Intel Virtualization Technology realize second base station BS 1 similar to the first base station BS 1 ', and to migration management equipment feed back this second base station BS 1 ' base station identification information, the second prompting dispensing device 33 respectively to the first base station BS 1 send comprise the second base station BS 1 ' the first indication information of base station identification information, the second indication information to the base station identification information that the second base station BS 1 ' transmission comprises the first base station BS 1.
Then the first indication information that, the first receiving device in the first base station 1 11 receives from migration management equipment 3.
The second indication information that the second receiving system 21 in the second base station 2 receives from migration management equipment 3.
The second apparatus for establishing 22 in the second base station 2, according to described the second indication information, adopts the second private address, sets up privately owned connection with described the first base station 1.
The first apparatus for establishing 12 in the first base station 1 is according to described the first indication information, adopts the first private address, set up with described the second base station 2 between privately owned connection.
It should be noted that, the mode that virtual base station according to the present invention obtains its corresponding private address include but not limited to following any:
1), when BBU realizes virtual base station by Intel Virtualization Technology, be default one or more the second private address of virtual base station;
2) when virtual base station receives the indication information from migration management equipment, from this indication information, obtain self available private address.
For example, while comprising the second private address in the second indication information, the second base station obtains self the second available private address in the second indication information from migration management equipment; Again for example, while comprising the first private address in the first indication information, the first base station obtains self first available private address etc. in the first indication information from migration management equipment.
Then, in the first base station 1, the first dispensing device, by described privately owned connection, is sent to described the second base station 2 by the control information transmission of this first base station.
Wherein, described control information transmission is included in the second base station and carries out required control information of using in transmitting procedure based on the presently used scheduled transmission agreement of communication network.
Preferably, when communication network adopts Stream Control Transmission Protocol, described control information transmission comprises the information of SCTP control block.
Then the control information that, the second receiving system 23 in the second base station 2 receives from described the first base station 1.
Continuation describes the first example of the present invention, in the first indication information that migration management equipment sends and the second indication information, include: the first private address IP1 that the first base station BS 1 can be used and the second base station BS 1 ' the second available private address IP2, the first base station BS 1 and the second base station BS 1 ' adopt respectively IP1 and IP2 to set up privately owned connection, and, the first dispensing device 13 in the first base station BS 1 from the SCTP endpoint of self, extract the information of SCTP control block and be sent to the second base station BS 1 ', the second base station BS 1 ' in the 3rd receiving system 23 receive the information of this SCTP control block and write in the SCTP endpoint of self.
Then, the inactive public address of the stop device in the first base station 1 14.
Preferably, state dispensing device (not shown) in described the first base station first stops the transfer of data of carrying out via public connection, the connection status relevant information of each public connection is sent to the second base station, and then, stop device 14 is stopped using public address.
Wherein, described connection status relevant information is for characterizing the relevant information of the data transmission state of public connection, for example, transmission sequence number (TSN, transmission sequence number), stream sequence number (SSN, Stream Sequence number), local verification label (local Verification Tag), peer node are verified the information such as label (peer Verification Tag).
It should be noted that, stop device 14 executable operations after first receiving device 11, before starting drive 24 all can.
More preferably, state dispensing device in the first base station 1 can stop the transfer of data of carrying out via public connection after first receiving device 11 executable operations, and the connection status relevant information of each public connection is sent to the second base station, and stop using public address after the first dispensing device operation.
Then, the starting drive 24 in the second base station 2 is enabled described public address, and to the network issue physical address relevant information corresponding with described public address, to communicate by described public connection and described other network elements.
Wherein, described physical address relevant information is used to indicate the information relevant to the hardware address of the second base station, and preferably, described physical address relevant information comprises the MAC Address of described the second base station.
Particularly, starting drive 24 is enabled described public address, and using the MAC Address with the second base station 2 as issuing with physical message corresponding to public address, so that the corresponding physical address information of this public address in each other network element flush buffers in communication network, to come to communicate with this second base station 2 by this public address and corresponding MAC Address.
Preferably, the connection status relevant information that starting drive 24 receives from each public connection of the first base station, and be stored in the SCTP endpoint of self, then, by gratuitous ARP (GARP, Gratuitous Address Resolution Protocol), to communication network broadcast public address and the corresponding MAC Address in the second base station, by this each public connection and other network elements, communicate continuing.
Continuation describes the first example of the present invention, the state dispensing device of the first base station BS 1 stops carrying out transfer of data by public connection Conec1, Conec2 and Conec3, respectively the connection state information of these three public connections is sent to the second base station, then, the inactive public address IP0 of stop device 14 of the first base station BS 1; Then, the second base station BS 1 ' receive with Conec1, Conec2 and these three public connections of Conec3 respectively corresponding connection state information and write self SCTP endpoint in after, by starting this device 24, enable IP0, and by GARP information to communication network broadcast public address IP0 and the MAC Address of self, other network elements can be communicated based on public address IP0 and corresponding MAC Address and the second base station.Then,, with reference to Fig. 4, the control information transmission of the second base station BS 1 ' based on obtained, continues to communicate with other network elements M1, M2, M3 respectively by public connection Conec1, Conec2 and Conec3.
As one of preferred version of the present invention, according to the solution of the present invention, the first base station 1 also comprises the second dispensing device (not shown), and the second base station 2 also comprises the 4th receiving system (not shown).
The second dispensing device by received, from the transmission data of described one or more other network elements, via described privately owned connection, be sent to described the second base station.
Preferably, while adopting Stream Control Transmission Protocol in communication network, described transmission data comprise the information of the SCTP chunk that the first base station has received.
Particularly, the second dispensing device extracts SCTP chunk and is sent to the second base station 2 via privately owned connection in the SCTP endpoint of self.
Then, the 4th receiving system, via described privately owned connection, receives the transmission data from described the first base station 1.
Particularly, the 4th receiving system, via privately owned connection, obtains SCTP chunk and writes in the SCTP endpoint of self.
According to the solution of the present invention, can effectively a plurality of virtual base stations be incorporated on same BBU and be realized, thereby greatly reduce the energy that communication network consumes.By preparing private address for base station, set up privately owned connection, thereby make to connect, can after being ready to, the second base station be redirected rapidly, and, that according to the present invention, realizes is redirected, for other network elements, be transparent completely, data are transmitted in the public connection that other network elements can continue by having set up, and can not be interfered.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to be included in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.A plurality of unit of stating in system claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (15)
1. one kind is carried out redirected method for the public connection relevant to the first base station to communication network, wherein, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network, said method comprising the steps of:
A receives the first indication information from migration management equipment, and described the first indication information comprises the base station identification information of the second base station for being redirected to, and wherein, described the first base station and described the second base station are realized by different BBU respectively;
B is according to described the first indication information, adopts the first private address, set up with described the second base station between privately owned connection;
C, by described privately owned connection, is sent to described the second base station by the control information transmission of this first base station;
Wherein, described method is further comprising the steps of:
-stop using described public address.
2. method according to claim 1, wherein, described method is further comprising the steps of:
-stop by described public connection transmission data, and the connection status relevant information of each public connection is sent to the second base station.
3. method according to claim 1 and 2, wherein, described method is further comprising the steps of:
-by received, from the transmission data of described one or more other network elements, via described privately owned connection, be sent to described the second base station.
4. one kind for being redirected to the public connection of communication network the method for the second base station, wherein, described public connection comprises that the first base station is based on public address, with being connected of setting up between other network elements in described communication network, described the first base station and described the second base station are realized by different BBU respectively, wherein, said method comprising the steps of:
A receives the second indication information from migration management equipment, and wherein, described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected;
B, according to described the second indication information, adopts the second private address, sets up privately owned connection with described the first base station;
C, via described privately owned connection, receives the control information transmission from described the first base station;
D enables described public address, and to the network issue physical address relevant information corresponding with described public address information, to communicate by described public connection and described other network elements.
5. method according to claim 4, wherein, described method is further comprising the steps of:
-via described privately owned connection, receive the transmission data from described the first base station.
6. according to the method described in claim 4 or 5, wherein, between described the first base station and one or more other network elements in described communication network, there is respectively at least one public connection, said method comprising the steps of:
-according to obtained control information transmission, and by described at least one public connection, communicate between described one or more other network elements.
7. for the public connection of subsidiary communications network, carry out a redirected method, wherein, said method comprising the steps of:
-according to the load relevant information of all BBU in described communication network, determine the BBU that the connection on the first base station that need to realize it is redirected, and two BBU corresponding with a described BBU, described the 2nd BBU is redirected rear the second base station pointed for realizing described connection;
-to described the 2nd BBU, send base station information, to realize described the second base station on described the 2nd BBU, wherein, realize with the virtual base station parameter of described the first base station based on identical described the second base station;
-to described the first base station, send the first indication information, and send the second indication information to described the second base station, described the first indication information comprises the base station identification information of the second base station for being redirected to, and described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected.
8. a base station, wherein, described the first base station is for to communication network, relative public connection is redirected, and described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network, described the first base station comprises:
First receiving device, for receiving the first indication information from migration management equipment, described the first indication information comprises the base station identification information of the second base station for being redirected to, and wherein, described the first base station and described the second base station are realized by different BBU respectively;
The first apparatus for establishing, for according to described the first indication information, adopts the first private address, set up with described the second base station between privately owned connection;
The first dispensing device, for by described privately owned connection, is sent to described the second base station by the control information transmission of this first base station;
Stop device, for stopping using described public address.
9. the first base station according to claim 8, wherein, described the first base station also comprises:
State dispensing device, for stopping by described public connection transmission data, and is sent to the second base station by the connection status relevant information of each public connection.
10. the first base station according to claim 8 or claim 9, wherein, described the first base station also comprises:
The second dispensing device, for by received, from the transmission data of described one or more other network elements, via described privately owned connection, be sent to described the second base station.
11. a kind of second base station, it is for being redirected to self by the communication network public connection relevant to the first base station, described public connection comprises that described the first base station is based on public address, with being connected of setting up between other network elements in described communication network, described the first base station and described the second base station are realized by different BBU respectively, wherein, described the second base station comprises:
The second receiving system, for receiving the second indication information from migration management equipment, wherein, described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected;
The second apparatus for establishing, for according to described the second indication information, adopts the second private address, sets up privately owned connection with described the first base station;
The 3rd receiving system, for receiving the control information from described the first base station;
Starting drive, for enabling described public address, and to the network issue physical address relevant information corresponding with described public address information, to communicate by described public connection and described other network elements.
12. the second base stations according to claim 11, wherein, described the second base station also comprises:
The 4th receiving system, for via described privately owned connection, receives the transmission data from described the first base station.
13. 1 kinds of migration management equipment, are redirected for the public connection of subsidiary communications network, and wherein, described migration management equipment comprises:
Directed determining device, be used for according to the load relevant information of all BBU of described communication network, determine the BBU that the connection on the first base station that need to realize it is redirected, and two BBU corresponding with a described BBU, described the 2nd BBU is redirected rear the second base station pointed for realizing described connection;
The first prompting dispensing device, sends base station information to described the 2nd BBU, and to realize described the second base station on described the 2nd BBU, wherein, realize with the virtual base station parameter of described the first base station based on identical described the second base station;
The second prompting dispensing device, for sending the first indication information to described the first base station, and send the second indication information to described the second base station, described the first indication information comprises the base station identification information of the second base station for being redirected to, and described the second indication information comprises the base station identification information of the first base station of the current correspondence of connection to be redirected.
14. 1 kinds of BBU, wherein, described BBU is for realizing the first base station described according to Claim 8 to 10 any one, and/or according to the second base station described in claim 11 or 12.
15. 1 kinds of communication systems, wherein, described communication system comprises migration management equipment according to claim 13, at least one is for realizing a BBU of the first base station as described in claim 8 to 10 any one, and at least one is for realizing the 2nd BBU of the second base station as described in claim 11 or 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110393.7A CN104080192B (en) | 2013-03-31 | 2013-03-31 | A kind of methods, devices and systems redirected to connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110393.7A CN104080192B (en) | 2013-03-31 | 2013-03-31 | A kind of methods, devices and systems redirected to connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104080192A true CN104080192A (en) | 2014-10-01 |
| CN104080192B CN104080192B (en) | 2018-05-08 |
Family
ID=51601182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310110393.7A Active CN104080192B (en) | 2013-03-31 | 2013-03-31 | A kind of methods, devices and systems redirected to connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104080192B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060826A (en) * | 2016-06-30 | 2016-10-26 | 北京奇虎科技有限公司 | Base station redirection method and base station redirection device |
| CN109803333A (en) * | 2017-11-17 | 2019-05-24 | 中兴通讯股份有限公司 | It is coupled reorientation method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316043A (en) * | 2011-09-29 | 2012-01-11 | 中国联合网络通信集团有限公司 | Port virtualization method, switch and communication system |
| CN102333037A (en) * | 2011-10-20 | 2012-01-25 | 中兴通讯股份有限公司 | Method and device for migrating virtual machine |
| CN102866915A (en) * | 2012-08-21 | 2013-01-09 | 华为技术有限公司 | Virtualization cluster integration method and device, and virtualization cluster system |
| EP2562973A1 (en) * | 2011-01-13 | 2013-02-27 | Huawei Technologies Co., Ltd. | Virtual machine migration method, switch, virtual machine system |
-
2013
- 2013-03-31 CN CN201310110393.7A patent/CN104080192B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2562973A1 (en) * | 2011-01-13 | 2013-02-27 | Huawei Technologies Co., Ltd. | Virtual machine migration method, switch, virtual machine system |
| CN102316043A (en) * | 2011-09-29 | 2012-01-11 | 中国联合网络通信集团有限公司 | Port virtualization method, switch and communication system |
| CN102333037A (en) * | 2011-10-20 | 2012-01-25 | 中兴通讯股份有限公司 | Method and device for migrating virtual machine |
| CN102866915A (en) * | 2012-08-21 | 2013-01-09 | 华为技术有限公司 | Virtualization cluster integration method and device, and virtualization cluster system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060826A (en) * | 2016-06-30 | 2016-10-26 | 北京奇虎科技有限公司 | Base station redirection method and base station redirection device |
| CN109803333A (en) * | 2017-11-17 | 2019-05-24 | 中兴通讯股份有限公司 | It is coupled reorientation method and device |
| CN109803333B (en) * | 2017-11-17 | 2022-04-19 | 中兴通讯股份有限公司 | Coupling redirection method and device |
| US11758456B2 (en) | 2017-11-17 | 2023-09-12 | Zte Corporation | Association redirection method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104080192B (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2016200197B2 (en) | Repeating method of wireless repeating device,and wireless repeating device | |
| CN102308662B (en) | Method of establishing X2 between stations, station and communication system | |
| CN102595534B (en) | Method and device for releasing user equipment context related resource | |
| CN103563440A (en) | Mobile communications network and method | |
| CN102123135A (en) | Method and system for determining characteristic information of MTC (Machine Type Communication) equipment and device | |
| CN102238659A (en) | Base station switching processing method and base station equipment | |
| TWI699107B (en) | Group establishment method for multi-login authentication user and switching device thereof | |
| JP2020529784A (en) | Core network access method by terminal, base station and terminal | |
| CN103747431A (en) | Method and device for realizing rapid roaming based on neighbor detection | |
| CN101754308B (en) | Switching mode selecting method, base station and system | |
| CN105191413A (en) | Balancing access point workloads | |
| CN103188753A (en) | Method and device for data transmission based on different links between heterogeneous networks | |
| CN103931144A (en) | Method, equipment and system for communication in virtual domain | |
| CN103281692B (en) | Method for fast roaming between a kind of AC and equipment | |
| CN104080136B (en) | A kind of method and apparatus for being used to realize the dynamic migration of virtual base station in BBU ponds | |
| US10306491B2 (en) | Antenna line device management method, and device | |
| CN105007605B (en) | A kind of method, network side equipment and the system of cell switching | |
| EP2800448A1 (en) | Method and device for achieving multi-cell service on base station equipment | |
| CN103747494A (en) | Switching method and switching device in WLAN (Wireless Local Area Network) | |
| CN102196449A (en) | Wireless communication system and method for assigning physical-layer cell ID of base stations in wireless communication system | |
| CN101621526B (en) | iSCSI method and apparatus for preventing useless connection from occupying system resources | |
| CN104080192A (en) | Connection redirecting method, device and system | |
| RU2693903C1 (en) | Method, apparatus and processing system for expanded port | |
| CN101695163A (en) | Global cell identity treatment method, device and system thereof | |
| CN104053159A (en) | Method and device for distributing frequency points to multi-carrier base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201206 ningqiao Road, Pudong New Area China (Shanghai) free trade test area, Pudong New Area, Shanghai Applicant after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388 Applicant before: Shanghai Alcatel-Lucent Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |