CN106686553A - Method and device for carrying out multicasting on core net EPC - Google Patents
Method and device for carrying out multicasting on core net EPC Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract
The invention provides a method for carrying out multicasting on a core net EPC and a device for carrying out multicasting on a core net EPC. A mapping relation of an IP address of a multicasting group and an IP address of a train access unit TAU is configured in the EPC. The IP address of the multicasting group is associated with a display terminal. The IP address of the TAU is associated with the TAU. The method comprises steps that the EPC receives data reports sent by a passenger information system PIS server; the data reports carry IP addresses of one or more multicasting groups; IP addresses, corresponding to the IP addresses of the one or more multicasting groups, of TAUs are searched; the data reports are sent to one or more TAU associated with the IP addresses of one or more TAUs; and the one or more TAU are used for forwarding the data reports to the display terminals associated with the IP addresses of the multicasting groups. According to the invention, it is achieved that the PIS server can directly access multiple display terminals hung under the TAUs simultaneously through the EPC.
Description
Technical field
The application is related to wireless communication technology field, and more particularly to one kind is carried out in core net EPC
The method of multicast and a kind of device that multicast is carried out in core net EPC.
Background technology
Development, scientific and technological progress with the epoch, the medium and mode that people obtain information is more and more,
Past, people are manufactured almost exclusively by paper media and obtain information, for example, buy book or remove library etc., and
Now, people, can be at any time by multimedia mode, such as display terminal in public transport, subway etc.
Various information are obtained everywhere, it is very convenient.
By taking PIS (Passenger Information System, passenger information system) as an example, PIS be for
Passenger provides the service system of all kinds of information.PIS relies on multimedia network technology, is with computer system
Core, information service is provided with station and vehicle-mounted display terminal as medium to passenger.With reference to shown in Fig. 1
The communication structure schematic diagram of PIS multicasts in prior art, in subway, typical PIS application scenarios are：
SGI (the Server that PIS servers 11 pass through EPC (Evolved Packet Core, core net) 12
Gateway Interface) side (not shown), a plurality of data flow is issued to multiple TAU (Train
Access Unit, train access unit) 13 times extension multiple display terminals 14.As shown in figure 1, EPC
The message that PIS servers send 1,2,3 three content identical data flows is received, then by the 1st article
The message of data flow is sent to first TAU (the first from left in figure), and the message of the 2nd data stream is sent
(hit exactly in figure) to second TAU, the message of the 3rd data stream is sent to into the 3rd TAU (figures
It is middle it is right one), the message of the data flow for receiving is respectively sent to each lower hang by last three TAU again
Each display terminal.
It is possible to further the signal of the communication process of PIS multicasts in the prior art with reference to shown in Fig. 2
Figure, in the prior art, it is TAU that PIS servers are handed down to the message destination address of the data flow of EPC
The multicast ip address of second line of a couplet display terminal, this address is the fixed IP of protocol conventions, and number section is 224.0.0.0
It is not IP address that core net EPC distributes to TAU to 239.255.255.255.But according to agreement
Agreement, EPC can only match (the wherein IP address comprising TAU) by a number by internal five-tuple
It is sent on a corresponding TAU according to the message of stream, how many display terminal needs to receive, and just needs
PIS server sides are wanted to send how many corresponding data flows.For example, EPC is received from PIS server sides
To the message of a data stream, the destination address of the message of the data flow can be judged, if the data flow
The destination address of message is not that terminal carries the IP address distributed to TAU to EPC when setting up, and can be abandoned
The message of the data flow, not forwards；The carrying if destination address of the message of the data flow is terminal is built
The IP address distributed to TAU to EPC immediately, then match DL-TFT according to the IP address of TAU
(DownLink Traffic Flow Template, downlink business flow template) carries out downlink data transmitting stream
Journey.
As can be seen here, prior art is primarily present following problem：
Firstth, EPC can only processing intent address be TAU IP address message, i.e. PIS servers
EPC cannot be passed through and directly access the display terminal hung under TAU；
Secondth, EPC can only processing data stream one to one, i.e., PIS servers cannot be realized to multiple
The message transmission of one-to-many between the display terminal hung under TAU.
The content of the invention
In view of the above problems, it is proposed that the embodiment of the present application overcomes the problems referred to above or extremely to provide one kind
A kind of method that multicast is carried out in core net EPC for partially solving the above problems and corresponding one
Plant carries out the device of multicast in core net EPC.
In order to solve the above problems, the embodiment of the present application discloses one kind and group is carried out in core net EPC
The method broadcast, is configured with the IP address of multicast group and the IP of train access unit TAU in the EPC
The mapping relations of address, wherein, the IP address of the multicast group is associated with display terminal, the TAU
IP address associate with TAU；
Methods described includes：
The EPC receives the data message that passenger information system PIS servers send；The data message
Carry the IP address of one or more multicast groups；
Search the IP ground of corresponding one or more TAU of IP address of one or more of multicast groups
Location；
The data message is sent to one or many of the IP address association of one or more of TAU
Individual TAU；One or more of TAU are used to for the data message to be forwarded to the multicast group respectively
IP address association display terminal.
In a kind of preferred embodiment of the invention, the IP address and train access unit TAU of the multicast group
The mapping relations of IP address be configured in the newly-increased of packet data node gateway PGW network element side network elements in EPC
In multicast address mapping table.
In a kind of preferred embodiment of the invention, the multicast group IP address and train access unit TAU
The mapping relations of IP address be configured in the EPC in original routing table.
It is described the data message to be sent to one or many in a kind of preferred embodiment of the invention
Individual TAU IP address association one or many TAU the step of include：
The IP address of one or more of TAU is carried out into downlink business flow template DL-TFT information
Match somebody with somebody, search the first tunnel information corresponding with the IP address of one or more of TAU；
The data message is sent to by one or more of TAU according to the tunnel information.
It is one or many when searching in the routing relation table in a kind of preferred embodiment of the invention
When the IP address of the corresponding TAU of IP address of individual multicast group fails, also include：
The IP address of one or more of multicast groups is carried out into DL-TFT information matches, is searched and institute
State corresponding second tunnel information of IP address of one or more multicast groups；
The data message is sent to according to the tunnel information one or more of with the multicast
The display terminal of the IP address association of group.
Accordingly, the embodiment of the present application also discloses a kind of device that multicast is carried out in core net EPC,
The mapping of the IP address of multicast group and the IP address of train access unit TAU is configured with the EPC
Relation, wherein, the IP address of the multicast group is associated with display terminal, the IP address of the TAU with
TAU is associated；
Described device includes：
Receiver module, for the EPC data message that passenger information system PIS servers send is received；
The data message carries the IP address of one or more multicast groups；
Searching modul, the IP of the corresponding TAU of the IP address for searching one or more of multicast groups
Address；
Sending module, for sending the data message to the IP address of one or more of TAU
One or many TAU of association；One or more of TAU are used to respectively forward the data message
To the display terminal that the IP address of the multicast group is associated.
In a kind of preferred embodiment of the invention, the IP address and train access unit TAU of the multicast group
The mapping relations of IP address be configured in the newly-increased of packet data node gateway PGW network element side network elements in EPC
In multicast address mapping table.
In a kind of preferred embodiment of the invention, the multicast group IP address and train access unit TAU
The mapping relations of IP address be configured in the EPC in original routing table.
In a kind of preferred embodiment of the invention, the sending module includes：
First tunnel information matching module, for the IP address of one or more of TAU to be carried out down
Row traffic flow template DL-TFT information matches, search the IP address pair with one or more of TAU
The first tunnel information answered；
First sending module, it is one for being sent to the data message according to the tunnel information
Or multiple TAU.
In a kind of preferred embodiment of the invention, it is characterised in that when the lookup in the routing relation table
When the IP address of the corresponding TAU of IP address of one or more of multicast groups fails, described device is also
Including：
Second tunnel information matching module, for the IP address of one or more of multicast groups to be carried out
DL-TFT information matches, search the second tunnel corresponding with the IP address of one or more of multicast groups
Information；
Second sending module, it is one for being sent to the data message according to the tunnel information
Or the display terminal that multiple IP address with the multicast group are associated.
The embodiment of the present invention includes advantages below：
The embodiment of the invention discloses a kind of method that multicast is carried out in core net EPC, by institute
The mapping relations of the IP address of IP address and train access unit TAU that multicast group is configured in EPC are stated,
So that PIS servers issue the data message of the IP address that destination address is the multicast group, institute
State data message to reach after the EPC, the EPC is by the IP address of the multicast group and described
The IP address of the corresponding TAU of mapping relationship searching of the IP address of TAU, then by the data message
Multiple one or more of TAU are handed down to simultaneously, and one or more of TAU are used for the number
It is forwarded to the display terminal of the IP address association of the multicast group respectively according to message.Compared with prior art,
Although the destination address of data message is distributed to TAU to EPC when terminal carrying is set up in the application
IP address, but still can reflecting by the IP address of the IP address of the multicast group and TAU
Penetrate relation to continue the data message to transmit, not abandon.Therefore, no matter PIS servers are handed down to
IP address comprising multiple multicast groups being associated with display terminal in the data message of EPC, can
By the mapping relationship searching to the IP address of TAU corresponding with the IP address of multicast group, realize
PIS servers can pass through EPC and directly access the multiple display terminals hung under TAU simultaneously, solve
Sector application field carries out the practical application scene of multicast based on EPC.
Further, the embodiment of the present invention can close the mapping of multicast group IP address and the IP address of TAU
System is configured in EPC in original routing table, without developing new tables of data in EPC, is subtracted
Lack the overhead of EPC, reach the purpose of system optimization；Efficient route querying is utilized simultaneously
Mechanism so that EPC can be quickly found out the IP address of TAU corresponding with the IP address of multicast group,
Improve systematic function, efficiency.And using routing table carry out multicast address matching relate only to PGW
Net element business processes code revision, and its modification amount is little, and the construction cycle is short.
Description of the drawings
Fig. 1 is the communication structure schematic diagram of PIS multicasts in prior art；
Fig. 2 is the communication process schematic diagram of PIS multicasts in prior art；
Fig. 3 be the application it is a kind of multicast is carried out in core net EPC embodiment of the method 1 the step of
Flow chart；
Fig. 4 is a kind of communication structure schematic diagram that multicast is carried out in core net EPC of the application；
Fig. 5 be the application it is a kind of multicast is carried out in core net EPC embodiment of the method 2 the step of
Flow chart；
Fig. 6 is a kind of structural frames of device embodiment that multicast is carried out in core net EPC of the application
Figure.
Specific embodiment
It is understandable to enable the above-mentioned purpose of the application, feature and advantage to become apparent from, below in conjunction with the accompanying drawings
The application is described in further detail with specific embodiment.
One of core idea of the embodiment of the present application is, it is proposed that the multicast ground based on route querying mechanism
Location mapping method, configures the correspondence mappings of the IP address of the IP address and TAU of multicast group in EPC
Relation so that EPC is capable of the IP address of the corresponding TAU of IP address of quick lock in multicast group, will
Message is forwarded.
With reference to Fig. 3, a kind of embodiment of the method that multicast is carried out in core net EPC of the application is shown
1 the step of flow chart, in this method embodiment, the IP of multicast group can be configured with the EPC
The mapping relations of the IP address of address and TAU, wherein, the IP address of the multicast group can be with display
Terminal association, the IP address of the TAU can be associated with TAU, and the present embodiment specifically can include
Following steps：
Step 101, the EPC receives the data message that passenger information system PIS servers send；
Wherein, the data message carries the IP address of one or more multicast groups.
Data message is the elementary cell of the data by network transmission, comprising a header (header)
With data itself, wherein header describes destination and and the relation between other data of data.Number
It is complete, independent data entity according to message, the entity is carried and to be delivered to purpose meter from source computer
The information of calculation machine, the information is handed over before being independent of between source computer and purpose computer and transmission network
Change.
In data message mode of operation, each data message is self-contained enough information, its biography
Send and be treated separately.In whole data message transmit process, it is not necessary to set up virtual circuit, network section
Point makees Route Selection for each data message, each data message it cannot be guaranteed that arrive sequentially at destination node,
Some are also possible to lose.
ICP/IP protocol defines a bag for transmitting on the internet, referred to as IP datagram text (IP
Datagram).This is a virtual package unrelated with hardware, is made up of stem and data two parts.It is first
The front portion in portion is regular length, totally 20 byte, and all IP datagram texts must have.
The standing part of stem is followed by some Optional Fields, and its length is variable.Source address in stem
All it is IP agreement address with destination address.
Each field in the standing part of IP datagram text stem includes：
(1) version：4 are accounted for, refers to the version of IP agreement.The IP agreement version that communicating pair is used must
Must be consistent.Widely used IP agreement version number is 4 (i.e. IPv4).
(2) header length：4 are accounted for, denotable maximum decimal value is 15.Note that this
The unit of number is 32 words (1 32 word length is 4 bytes) represented by individual field, therefore, work as IP
Header length be 1111 when (metric 15), header length just reaches 60 bytes.When IP point
When the header length of group is not the integral multiple of 4 bytes, it is necessary to filled using last filling field.
Therefore data division starts in the integral multiple of 4 bytes forever, more convenient so when IP agreement is realized.
Header length be limited to the shortcoming of 60 bytes be there may come a time when it is not enough.But do so is desirable to user and uses up
Amount reduces expense.The most frequently used header length is exactly 20 bytes (i.e. header length is 0101), at this moment not
Using any option.
(3) Differentiated Services：8 are accounted for, for obtaining preferably service.This field is in old plant
It is called COS, but is actually never previously used.IETF renames this field within 1998
For Differentiated Services DS (DifferentiatedServices).Only when using Differentiated Services, this field
Just work.
(4) total length：Total length refers to the length of stem and data sum, and unit is byte.Total length
Field is 16, therefore the greatest length of datagram is 216-1=65535 bytes.
Each data link layer below IP layers has the frame format of oneself, including frame format
In data field greatest length, this is referred to as maximum transmission unit MTU
(MaximumTransferUnit).When a datagram is packaged into the frame of link layer, this datagram
The certain MTU value no more than data below link layer of total length (i.e. stem adds data division).
(5) (identification) is identified：Account for 16.IP softwares maintain in memory a counting
Device, often produces a datagram, and enumerator just adds 1, and this value is assigned to into identification field.But this " mark
Know " it is not sequence number, because IP is Connectionless transport service, there is no received in-order in datagram.
When datagram because length exceedes the MTU of network must burst when, the value of this identification field just by
In copying to the identification field of all of datagram.The value of identical identification field makes each data after burst
Report tablet finally can correctly reset the datagram for becoming original.
(6) (flag) is indicated：Account for 3, but only 2 meaningful.
Wherein, the lowest order in attribute field is designated as MF (MoreFragment).After MF=1 is represented
The datagram in face " also burst ".MF=0 represents that this has been last in some data report tablets.
One in the middle of attribute field is designated as DF (Don ' t Fragment), means " being unable to burst ".
Burst is just allowed only as DF=0.
(7) piece skew：Account for 13.Piece skew is pointed out：Longer is grouped in after burst, and certain piece is in original
Relative position in packet.That is, the starting point of relative user data fields, the piece is from the beginning of where.
Piece is offset with 8 bytes as offset identity.In other words, the length of each burst must be 8 bytes (64
Position) integral multiple.
(8) life span：8 are accounted for, the conventional english abbreviation of TTL field is TTL
(TimeToLive), it is shown to be the datagram life-span in a network.Arranged by the source point for sending datagram
This field.Its objective is to prevent the datagram that cannot be paid from unrestrictedly going around in circles in the internet, because
And consumption of network resources in vain.Initial design is the unit using the second as TTL.Often through a road
During by device, just TTL is deducted a period of time that datagram is consumed in router.If datagram is on road
The time consumed by device is less than 1 second, just ttl value is subtracted 1.When ttl value is 0, this is just abandoned
Individual datagram.
(9) agreement：8 are accounted for, protocol fields point out which kind of association is the data that this datagram is carried be using
View, so that the IP layers for making destination host know which processing procedure should will be given on data division.
(10) header check and：Account for 16.The stem of this field inspection data report, but do not wrap
Include data division.This is because datagram is often through a router, router will be recalculated
Header check and (some fields, such as life span, mark, piece skew all may change).
Inspection data part can not reduce the workload of calculating.
(11) source address：Account for 32.
(12) destination address：Account for 32.
In actual applications, PIS servers are under normal circumstances, there is provided Passenger Notice, service time,
The train arrival and leaving time, time-table, manager's bulletin, government notice, tour reference, stock information,
The multimedia messages of the Real-time and Dynamic such as Media News, live game coverage, advertisement.In fire, obstruction and terror
Under the abnormal conditions such as attack, there is provided dynamic emergency evacuation prompting.PIS is that passenger and central control room are carried
Report to the police, alert platform and urgent call for audio broadcasting platform, video program play platform, case of emergency
Platform.Also for central control room video monitoring is provided, monitoring storage and interfering system is monitored.
PIS can be summarised as following four part by the classification according to system：
First, broadcast communication system, including：
1st, driver's control panel；
2nd, driver's intercommunication unit；
3rd, broadcast system control device；
4th, digital speech radio unit；
5th, microphone；
6th, the interfacing device of vehicle；
7th, passenger emergency alarm device；
8th, vehicle-mounted loudspeaker.
2nd, Customer information display system and multimedia play system, including：
1st, LED terminals display；
2nd, LED guest rooms display；
3rd, LED car bodies outer display；
4th, LCD information displays；
5th, dynamic electronic map；
6th, multimedia server；
7th, multimedia controller；
8th, automotive network interface.
3rd, video monitoring, including：
1st, video monitoring server；
2nd, video surveillance；
3rd, video monitoring vehicle interface；
4th, photographic head is monitored.
4th, emergency security system, including：
1st, urgent call unit；
2nd, alarm unit.
In addition, the embodiment of the present invention is based on LTE (Long Term Evolution, Long Term Evolution)
Wireless communication technology.4G has incomparable superiority as forth generation mobile communication technology, it
Voice, text, video and image information can be quickly transmitted, disclosure satisfy that nearly all user for nothing
The requirement of line service, International Telecommunication Union passes for the standard of 4G systems to meet 100Mbit/s data
The system of defeated speed, the undisputed high speed dialogue being referred to as between machine.LTE mainly studies 3GPP
The Long Term Evolution of wireless access network, the LTE Advanced of upgrade version will finally meet international telecommunication
Requirement of the alliance to 4G systems, SAE (System Architecture Evolution, System Architecture Evolution)
It is then the Long Term Evolution of research on the core net, it defines the packet-based core networks EPC of a full IP, and this is
The characteristics of system, is separated and net without circuit domain, based on full IP structures, control to only have packet domain with carrying
Network flat structure, wherein mainly including MME (Mobility Management Entity, moving tube
Reason entity), SGW (Serving Gateway, gateway), PGW (Packet Data Node
Gateway, packet data node gateway), PCRF (Policy and Charging Rules Function,
Policy and fees policy function) etc. network element.Wherein SGW and PGW are usually closed and are set and be referred to as SAE.
The critical piece of EPC is：
MME：Management session (session) state and certification and the user on tracking network；
SGW：By accessing network routing data；The user plane functions of SGSN network elements in former 3G network,
Sometimes also it is written as S-GW；
PGW：As the port between LTE network and other packet data network, management service quality
(QoS) and depth data packet check (DPI) is provided；The function of GGSN network elements in former 3G network,
Sometimes also it is written as P-GW；
PCRF：Support server data stream detection, strategy execution and meter flow charging mode.
In short, EPC has the following characteristics that：
1st, core net convergentization, function of exchange routeization；
2nd, service plane and control plane are kept completely separate；
3rd, network element number is minimized, protocol hierarchy optimization；
4th, network flattening, full IPization.
In embodiments of the present invention, EPC can receive the data message sent by PIS servers, described
Data message carries the IP address of one or more multicast groups, i.e., the destination address of described data message
For the IP address of the multicast group, the IP address of the multicast group is associated with display terminal.For example,
The IP address of three display terminals is respectively 1.1.1.1,2.2.2.2,3.3.3.3 in multicast group, then PIS
Three described IP address, and described three IP ground will be included in the data message that server sends
Location is all the destination address of the data message.Certainly, the datagram of EPC active obtainings PIS servers
Text is also possible, and the data transfer mode of EPC and PIS servers can be selected according to the actual requirements,
The embodiment of the present invention is not restricted to this.
Step 102, searches corresponding one or more TAU of IP address of one or more of multicast groups
IP address；
After data message reaches EPC, EPC needs to continue to send to one by the data message
Or multiple TAU, but the destination address of data message is one or more multicasts associated with display terminal
The IP address of group, therefore, EPC needs reflecting for the IP address of the IP address by multicast group and TAU
Relation is penetrated, the IP of corresponding one or more TAU of IP address of one or more of multicast groups is searched
Address.
In one preferred embodiment of the invention, the IP address of the IP address of the multicast group and TAU
Mapping relations be configured in the new adding multicast address of packet data node gateway PGW network element side network elements in EPC and reflect
In firing table.
PGW is the important network element in mobile communications network EPC.EPC networks are actually original 3G cores
The evolution version of heart net ps domain, and the GGSN (Gateway that it has been an evolution that PGW is also corresponded to
GPRS Support Node, Gateway GPRS Support Node) network element, its function and effect and original GGSN
Network element is suitable.The PGW network element entities introduced in EPC system, its English full name is PDN (Public
Data Network, public data network) Gateway, it is EPC similar to the function of GGSN network elements
The borde gateway of network, there is provided the session management of user and carrying control, data forwarding, IP address distribution
And non-3 gpp user access etc. function.It is that 3GPP is accessed and non-3 GPP access public data network
The anchor point of network PDN.So-called 3GPP is accessed, and refers to 3GPP family of standards wireless access technology out,
Current China Mobile of such as China and the mobile phone of CHINAUNICOM, are exactly 3GPP access technologies；It is so-called non-
3GPP is accessed, and is exactly the wireless access technology beyond 3GPP family of standards, typically such as China's electricity
The CDMA access technologies of letter and currently a popular WiFi access technologies etc..That is, in EPC
In network, if non-3 GPP access, it can be without MME network element and SGW for mobile terminal
Network element, but be bound to, through PGW network elements, can just be linked into PDN.
The major function of PGW network elements includes：
L, session and bearer management：The concept without default bearing in 2G/3G networks, its attachment net
After network, without in the case of service request, it is not necessary to activate PDP (Packet Data Protocol,
Packet data protocol) context and IP address will not be distributed；It is while user adheres in LTE network
Default bearing (Default Bearer) is set up and for terminal distribution IP address, so as to provide the user " forever
It is long online " functional characteristic, reduce it and resettle connection when there is transceiving data and caused time delay,
After default bearing is set up, dedicated bearing can be resettled in the case of having high QoS business.
For example the EPC network user accesses the operation of Web page, because the service request is to data message
The requirement of time delay is not very high, then the transmitting-receiving of data message can be carried out on default bearing；If user sends out
Audio call is played, then because default bearing cannot ensure that propagation delay time, packet loss etc. are required, has now been needed
To be judged and be triggered by PCRF network elements, it is desirable to which PGW is that user creates dedicated bearing, and here
Carry and upload sending voice data message, to improve the quality of voice call, it is ensured that good Consumer's Experience.
Additionally, after voice call terminates, dedicated bearing will be deleted, and default bearing can join in user
Retain always during net.
2nd, IP address distribution：PGW is responsible for the user's distribution IP address for accessing, hereafter data message
Transmission carry out under this IP address, PGW distribution address style include IP V4, IP V6 or
IPV4+IPV6。
IPV4 address spaces have certain limitation, and IPV6 is because address resource is abundant, safety
Greatly improve, become the direction of follow-up internet development, a carrying can regard that one is assigned with as
The data-message transmission passage of IP address, if what is distributed is the address style of IPV4, terminal can only
Also information exchange is carried out for the computer or server of IPV4 with address style in outer data network,
IPV6 be also in the same manner, and if bearer types support IPV4V6, also referred to as double stacks (Dual Stack),
The address for connecting IPV4 and IPV6 simultaneously then can be carried at one, the carrying of network is undoubtedly saved
Resource.
In embodiments of the present invention, the mapping relations of the IP address of the IP address of multicast group and TAU can be with
It is that the IP address of multicast group maps with the IP address of TAU.For example, the IP address of TAU 1 is 4.4.4.4,
Under hung two display terminals, the IP address of two display terminals is respectively 1.1.1.1,2.2.2.2, TAU
2 IP address is 5.5.5.5, and lower to have hung a display terminal, the IP address of display terminal is 3.3.3.3,
So, in multicast address mapping table, 1.1.1.1 and 2.2.2.2 and 4.4.4.4 maps, 3.3.3.3 and 5.5.5.5
Mapping.Therefore, EPC can be found corresponding with destination address in data message by multicast address mapping table
TAU IP address, for example, the destination address of data message is 1.1.1.1, by searching multicast ground
The IP address that location mapping table can be learnt with the IP address of multicast group is the corresponding TAU of 1.1.1.1 is
4.4.4.4.Certainly, the mapping relations can also be the IP ground of the MAC Address with TAU of multicast group
Location maps, or the IP address of multicast group maps with the MAC Address of TAU, and concrete mapping relations can
To be selected according to practical application, the embodiment of the present invention is not restricted to this.
In embodiments of the present invention, the new adding multicast address mapping table can be stored in PGW in EPC
In the internal memory of network element side network element, multicast address mapping table can be configured to sequence list either chained list or other types
Table can, the type of mapping table can be selected according to the actual requirements.
Step 103, the data message is sent to the IP address of one or more of TAU and is associated
One or more TAU；
When the mapping relations of the IP address that EPC passes through the IP address and TAU of multicast group, find with
During the IP address of corresponding one or more TAU of IP address of one or more multicast groups, EPC is
Data message can be sent or many TAU associated to the IP address with one or more TAU.
In one preferred embodiment of the invention, the step 103 can specifically include following sub-step：
Sub-step 1031, by the IP address of one or more of TAU downlink business flow template is carried out
DL-TFT information matches, search the first tunnel corresponding with the IP address of one or more of TAU
Information；
Sub-step 1032, is sent to the data message according to the tunnel information one or more of
TAU。
Wherein, one or more of TAU are used to for the data message to be forwarded to the multicast respectively
The display terminal of the IP address association of group.
For example, the mapping relationship searching of the IP address of the IP address and TAU that pass through multicast group as EPC
To in data message after the IP address of one or more TAU corresponding with the IP address of multicast group, according to
The IP address of one or more TAU for finding carries out DL-TFT information matches, search EPC with it is each
Individual TAU carries out first tunnel information in the tunnel of data interaction, is obtaining all of first tunnel letter
After breath, EPC is sent data message to each by each tunnel corresponding with each first tunnel information
Individual TAU.For example, EPC carries out DL-TFT information matches according to the IP address of TAU 1, learns EPC
It is that data interaction is carried out by tunnel A with TAU 1, DL-TFT is carried out according to the IP address of TAU 2
Information matches, learn that EPC and TAU 2 is to carry out data interaction by tunnel B, therefore, EPC
Data message is sent to TAU 1 by tunnel A, data message is sent to TAU 2 by tunnel B.
Each TAU is received and the data message is forwarded to respectively into one of extension under each TAU after data message
Or multiple display terminals.
Certainly, above-mentioned processing mode is intended only as example, when the embodiment of the present invention is implemented, can basis
Practical situation arranges other processing modes, and for example, EPC can be according to one or more TAU for finding
IP address directly by data message send to one or more TAU IP address associate one or many
Individual TAU；Using other processing modes EPC can also be sent data message to one or more
TAU, the invention is not limited in this regard.
The embodiment of the invention discloses a kind of method that multicast is carried out in core net EPC, by institute
The mapping relations of the IP address of IP address and train access unit TAU that multicast group is configured in EPC are stated,
So that PIS servers issue the data message of the IP address that destination address is the multicast group, institute
State data message to reach after the EPC, the EPC is by the IP address of the multicast group and described
The IP address of the corresponding TAU of mapping relationship searching of the IP address of TAU, then by the data message
Multiple one or more of TAU are handed down to simultaneously, and one or more of TAU are used for the number
It is forwarded to the display terminal of the IP address association of the multicast group respectively according to message.Compared with prior art,
Although the destination address of data message is distributed to TAU to EPC when terminal carrying is set up in the application
IP address, but still can reflecting by the IP address of the IP address of the multicast group and TAU
Penetrate relation to continue the data message to transmit, not abandon.Therefore, no matter PIS servers are handed down to
IP address comprising multiple multicast groups being associated with display terminal in the data message of EPC, can
By the IP address of the mapping relationship searching to TAU corresponding with the IP address of multicast group.Such as Fig. 4
Shown, realizing PIS servers can pass through multiple displays that EPC directly accesses extension under TAU simultaneously
Terminal, solving sector application field carries out the practical application scene of multicast based on EPC.
With reference to Fig. 5, a kind of embodiment of the method that multicast is carried out in core net EPC of the application is shown
2 the step of flow chart, in the present embodiment, the IP address and TAU of multicast group are configured with the EPC
IP address mapping relations, wherein, the IP address of the multicast group is associated with display terminal, described
The IP address of TAU is associated with TAU, and the present embodiment specifically may include steps of：
Step 201, the EPC receives the data message that passenger information system PIS servers send；
Wherein, the data message carries the IP address of one or more multicast groups；
Step 202, searches corresponding one or more TAU of IP address of one or more of multicast groups
IP address；
After data message reaches EPC, EPC needs to continue to send to one by the data message
Or multiple TAU, but the destination address of data message is one or more multicasts associated with display terminal
The IP address of group, therefore, EPC needs reflecting for the IP address of the IP address by multicast group and TAU
Relation is penetrated, the IP of corresponding one or more TAU of IP address of one or more of multicast groups is searched
Address.
In one preferred embodiment of the invention, the IP address of the multicast group IP address and TAU
Mapping relations are configured in the EPC in original routing table.
In embodiments of the present invention, the IP address of the IP address of multicast group and TAU can be configured to
In the original routing tables of EPC, wherein the IP address of multicast group is the destination address of data message, TAU's
IP address is the next-hop ip address of purpose address.Specifically, when data message reaches PGW network elements
Afterwards, EPC according to configuration routing table in multicast group IP address and TAU IP address mapping relations,
Route querying is carried out, corresponding one or more TAU are obtained by the IP address of one or more multicast groups
IP address.
In embodiments of the present invention, the mapping relations of the IP address of the IP address of multicast group and TAU can be with
It is that the IP address of multicast group maps with the IP address of TAU.For example, the IP address of TAU 1 is 4.4.4.4,
Under hung two display terminals, the IP address of two display terminals is respectively 1.1.1.1,2.2.2.2, TAU
2 IP address is 5.5.5.5, and lower to have hung a display terminal, the IP address of display terminal is 3.3.3.3,
So, in multicast address mapping table, 1.1.1.1 and 2.2.2.2 and 4.4.4.4 maps, 3.3.3.3 and 5.5.5.5
Mapping.Therefore, EPC can be found corresponding with destination address in data message by multicast address mapping table
TAU IP address, for example, the destination address of data message is 1.1.1.1, by searching multicast ground
The IP address that location mapping table can be learnt with the IP address of multicast group is the corresponding TAU of 1.1.1.1 is
4.4.4.4.Certainly, the mapping relations can also be the IP ground of the MAC Address with TAU of multicast group
Location maps, or the IP address of multicast group maps with the MAC Address of TAU, and concrete mapping relations can
To be selected according to practical application, the embodiment of the present invention is not restricted to this.
In embodiments of the present invention, the routing table can be configured to static routing table or dynamic routing
Table, or to be configured to alternate manner also possible.It is appreciated that can be by the IP address of multicast group
The mode being configured to the mapping relations of the IP address of TAU in routing table is suitable for the application enforcement
Example, the embodiment of the present application is not restricted to this.
Step 203, when the IP address that one or more of multicast groups are searched in the routing relation table
When the IP address of corresponding TAU fails, also including following sub-step：
Sub-step 2031, according to the IP address of one or more of multicast groups DL-TFT information is carried out
Matching, searches the second tunnel information corresponding with the IP address of one or more of multicast groups；
Sub-step 2032, by the tunnel information by the data message be sent to it is one or more of with
The display terminal of the IP address association of the multicast group.
In actual applications, IPs of the EPC according to multicast group IP address and TAU in the routing table of configuration
The mapping relations of address, when carrying out route querying, it is understood that there may be by the IP of one or more multicast groups
Address acquisition less than the IP address of corresponding one or more TAU situation, such as because human error,
By the IP address configuration mistake of the IP address of multicast group or TAU etc..Now, EPC will not be according to road
By the IP address of table search TAU corresponding with the IP address of multicast group, but directly by multicast group
IP address carries out DL-TFT information matches, searches EPC and closes with the IP address of one or more multicast groups
The display terminal of connection carries out second tunnel information in the tunnel of data interaction, is obtaining all of second tunnel
After road information, EPC is sent data message by each tunnel corresponding with each second tunnel information
To the display terminal that one or more are associated with the IP address of multicast group.For example, EPC is according to multicast group
IP address carry out DL-TFT information matches, learn EPC and IP address for 1.1.1.1 multicast group
It is that data interaction is carried out by tunnel C, learns that EPC is logical for the multicast group of 3.3.3.3 with IP address
Crossing tunnel D carries out data interaction, therefore, EPC is sent data message to IP ground by tunnel C
Location is the multicast group of 1.1.1.1, data message is sent to the group that IP address is 3.3.3.3 by tunnel D
Broadcast group.
Certainly, above-mentioned processing mode is intended only as example, when the embodiment of the present invention is implemented, can basis
Practical situation arranges other processing modes, and for example, the destination address that EPC can be in data message is straight
Connect and data message is sent the display terminal associated to the IP address of one or more multicast groups；Can also
Cause EPC that data message is sent directly to the IP of one or more multicast groups using other processing modes
The display terminal of address information, the invention is not limited in this regard.
This method embodiment 2 is with the difference of preceding method embodiment 1, multicast group IP address and TAU
The mapping relations of IP address be stored in the original routing tables of EPC；When searching institute in routing relation table
When the IP address for stating the corresponding TAU of IP address of one or more multicast groups fails, EPC can be with root
According to the IP address of multicast group in data message, the display associated with the IP address of multicast group is directly had access to
Terminal.
The embodiment of the present invention can exist the configuration of the mapping relations of multicast group IP address and the IP address of TAU
In EPC in original routing table, without developing new tables of data in EPC, EPC is reduced
Overhead, reached the purpose of system optimization；Efficient route querying mechanism is utilized simultaneously so that
EPC can be quickly found out the IP address of TAU corresponding with the IP address of multicast group, improve system
Performance, efficiency.And using routing table carry out multicast address matching relate only at PGW net element business
Reason code revision, its modification amount is little, and the construction cycle is short.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as one it is
The combination of actions of row, but those skilled in the art should know, and the embodiment of the present application is not by described
Sequence of movement restriction because according to the embodiment of the present application, some steps can using other orders or
Person is carried out simultaneously.Secondly, those skilled in the art also should know, embodiment described in this description
Preferred embodiment is belonged to, necessary to involved action not necessarily the embodiment of the present application.
With reference to Fig. 6, a kind of device embodiment that multicast is carried out in core net EPC of the application is shown
Structured flowchart, the mapping of the IP address of multicast group and the IP address of TAU is configured with the EPC
Relation, wherein, the IP address of the multicast group is associated with display terminal, the IP address of the TAU with
TAU is associated；Specifically can include such as lower module：
Receiver module 301, for the EPC data that passenger information system PIS servers send are received
Message；The data message carries the IP address of one or more multicast groups；
Searching modul 302, the corresponding TAU of the IP address for searching one or more of multicast groups
IP address；
Sending module 303, for sending the data message to the IP of one or more of TAU
One or many TAU of address information；One or more of TAU are used for data message difference
It is forwarded to the display terminal of the IP address association of the multicast group.
In one preferred embodiment of the invention, the IP address of the IP address of the multicast group and TAU
Mapping relations be configured in the new adding multicast address of packet data node gateway PGW network element side network elements in EPC and reflect
In firing table.
In one preferred embodiment of the invention, the IP address of the multicast group IP address and TAU
Mapping relations are configured in the EPC in original routing table.
In one preferred embodiment of the invention, the sending module 303 includes：
First tunnel information matching module, for the IP address of one or more of TAU to be carried out down
Row traffic flow template DL-TFT information matches, search the IP address pair with one or more of TAU
The first tunnel information answered；
First sending module, it is one for being sent to the data message according to the tunnel information
Or multiple TAU.
It is one or many when searching in the routing relation table in a kind of preferred embodiment of the invention
When the IP address of the corresponding TAU of IP address of individual multicast group fails, described device also includes：
Second tunnel information matching module, for the IP address of one or more of multicast groups to be carried out
DL-TFT information matches, search the second tunnel corresponding with the IP address of one or more of multicast groups
Information；
Second sending module, it is one for being sent to the data message according to the tunnel information
Or the display terminal that multiple IP address with the multicast group are associated.
For device embodiment, due to itself and embodiment of the method basic simlarity, so the comparison of description
Simply, related part is illustrated referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, and each embodiment is stressed
Be all difference with other embodiment, between each embodiment identical similar part mutually referring to
.
Those skilled in the art are it should be appreciated that the embodiment of the embodiment of the present application can be provided as method, dress
Put or computer program.Therefore, the embodiment of the present application can using complete hardware embodiment, completely
Software implementation or the form with reference to the embodiment in terms of software and hardware.And, the embodiment of the present application
Can adopt can be situated between in one or more computers for wherein including computer usable program code with storage
The computer implemented in matter (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of program product.
The embodiment of the present application be with reference to according to the method for the embodiment of the present application, terminal unit (system) and
The flow chart and/or block diagram of computer program is describing.It should be understood that can be referred to by computer program
Make flowchart and/or each flow process and/or square frame in block diagram and flow chart and/or side
The combination of flow process and/or square frame in block diagram.These computer program instructions can be provided to general-purpose computations
The processor of machine, special-purpose computer, Embedded Processor or other programmable data processing terminal equipments with
Produce a machine so that hold by the processor of computer or other programmable data processing terminal equipments
Capable instruction is produced for realizing in one side of one flow process of flow chart or multiple flow processs and/or block diagram
The device of the function of specifying in frame or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable datas to process
In the computer-readable memory that terminal unit works in a specific way so that be stored in the computer-readable
Instruction in memorizer is produced and includes the manufacture of command device, and command device realization is in flow chart one
The function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions can also be loaded into computer or other programmable data processing terminals set
It is standby upper so that execution series of operation steps is in terms of producing on computer or other programmable terminal equipments
The process that calculation machine is realized, so as to the instruction performed on computer or other programmable terminal equipments provides use
In realization in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames
The step of function of specifying.
Although having been described for the preferred embodiment of the embodiment of the present application, those skilled in the art are once
Basic creative concept is known, then other change and modification can be made to these embodiments.So,
Claims are intended to be construed to include preferred embodiment and fall into the institute of the embodiment of the present application scope
Have altered and change.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms
It is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires
Either to imply and there is any this actual relation or order between these entities or operation.And, art
Language " including ", "comprising" or its any other variant are intended to including for nonexcludability, so that
A series of process, method, article or terminal unit including key elements not only includes those key elements, and
Also include other key elements for being not expressly set out, or also include for this process, method, article or
The intrinsic key element of person's terminal unit.In the absence of more restrictions, by sentence " including one
It is individual ... " key element that limits, it is not excluded that including the process of the key element, method, article or end
Also there is other identical element in end equipment.
A kind of method that multicast is carried out in core net EPC provided herein and one kind are existed above
The device of multicast is carried out in core net EPC, is described in detail, specific case used herein
The principle and embodiment of the application are set forth, the explanation of above example is only intended to help and manages
Solution the present processes and its core concept；Simultaneously for one of ordinary skill in the art, according to this
The thought of application, will change in specific embodiments and applications, in sum, this
Description should not be construed as the restriction to the application.
Claims (10)
1. a kind of method that multicast is carried out in core net EPC, it is characterised in that match somebody with somebody in the EPC
The mapping relations of the IP address of multicast group and the IP address of train access unit TAU are equipped with, wherein, institute
The IP address for stating multicast group is associated with display terminal, and the IP address of the TAU is associated with TAU；
Methods described includes：
The EPC receives the data message that passenger information system PIS servers send；The data message
Carry the IP address of one or more multicast groups；
Search the IP ground of corresponding one or more TAU of IP address of one or more of multicast groups
Location；
The data message is sent to one or many of the IP address association of one or more of TAU
Individual TAU；One or more of TAU are used to for the data message to be forwarded to the multicast group respectively
IP address association display terminal.
2. method according to claim 1, it is characterised in that the IP address of the multicast group and
The mapping relations of the IP address of train access unit TAU are configured in packet data node gateway in EPC
In the new adding multicast address mapping table of PGW network element side network elements.
3. method according to claim 1, it is characterised in that the multicast group IP address and row
The mapping relations of the IP address of car access unit TAU are configured in the EPC in original routing table.
4. method according to claim 1, it is characterised in that described to send out the data message
Deliver to one or more of TAU IP address association one or many TAU the step of include：
The IP address of one or more of TAU is carried out into downlink business flow template DL-TFT information
Match somebody with somebody, search the first tunnel information corresponding with the IP address of one or more of TAU；
The data message is sent to by one or more of TAU according to the tunnel information.
5. method according to claim 1, it is characterised in that when in the routing relation table
When the IP address for searching the corresponding TAU of IP address of one or more of multicast groups fails, also include：
The IP address of one or more of multicast groups is carried out into DL-TFT information matches, is searched and institute
State corresponding second tunnel information of IP address of one or more multicast groups；
The data message is sent to according to the tunnel information one or more of with the multicast
The display terminal of the IP address association of group.
6. a kind of device that multicast is carried out in core net EPC, it is characterised in that match somebody with somebody in the EPC
The mapping relations of the IP address of multicast group and the IP address of train access unit TAU are equipped with, wherein, institute
The IP address for stating multicast group is associated with display terminal, and the IP address of the TAU is associated with TAU；
Described device includes：
Receiver module, for the EPC data message that passenger information system PIS servers send is received；
The data message carries the IP address of one or more multicast groups；
Searching modul, the IP of the corresponding TAU of the IP address for searching one or more of multicast groups
Address；
Sending module, for sending the data message to the IP address of one or more of TAU
One or many TAU of association；One or more of TAU are used to respectively forward the data message
To the display terminal that the IP address of the multicast group is associated.
7. device according to claim 6, it is characterised in that the IP address of the multicast group and
The mapping relations of the IP address of train access unit TAU are configured in packet data node gateway in EPC
In the new adding multicast address mapping table of PGW network element side network elements.
8. device according to claim 6, it is characterised in that the multicast group IP address and row
The mapping relations of the IP address of car access unit TAU are configured in the EPC in original routing table.
9. device according to claim 6, it is characterised in that the sending module includes：
First tunnel information matching module, for the IP address of one or more of TAU to be carried out down
Row traffic flow template DL-TFT information matches, search the IP address pair with one or more of TAU
The first tunnel information answered；
First sending module, it is one for being sent to the data message according to the tunnel information
Or multiple TAU.
10. device according to claim 6, it is characterised in that when in the routing relation table
When the IP address for searching the corresponding TAU of IP address of one or more of multicast groups fails, the dress
Putting also includes：
Second tunnel information matching module, for the IP address of one or more of multicast groups to be carried out
DL-TFT information matches, search the second tunnel corresponding with the IP address of one or more of multicast groups
Information；
Second sending module, it is one for being sent to the data message according to the tunnel information
Or the display terminal that multiple IP address with the multicast group are associated.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121016A (en) * | 2018-08-06 | 2019-01-01 | 深圳宇翊技术股份有限公司 | A kind of efficient transmission method for realizing PIS data file based on IP multicast |
| CN109327810A (en) * | 2018-09-29 | 2019-02-12 | 北京中兴高达通信技术有限公司 | A kind of subway PIS business method of multicasting and device based on the cluster communication of the broadband LTE |
| CN109511099A (en) * | 2018-11-06 | 2019-03-22 | 武汉虹信通信技术有限责任公司 | A kind of TAU main/standby switching method |
| CN110831058A (en) * | 2018-08-08 | 2020-02-21 | 成都鼎桥通信技术有限公司 | PIS data transmission method and device |
| CN110868701A (en) * | 2018-08-28 | 2020-03-06 | 比亚迪股份有限公司 | Vehicle-mounted access equipment, control method thereof and rail vehicle |
| CN112087737A (en) * | 2019-06-14 | 2020-12-15 | 华为技术有限公司 | Communication method, device and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130336220A1 (en) * | 2011-01-14 | 2013-12-19 | Nokia Siemens Networks Oy | Single Carrier Cell Aggregation |
| CN103796191A (en) * | 2014-03-05 | 2014-05-14 | 大唐移动通信设备有限公司 | Method, device and terminal for sending data to user terminal |
| CN104219769A (en) * | 2014-09-15 | 2014-12-17 | 国家电网公司 | LTE-based high-speed rail wireless communication system and resource distribution method thereof |
| CN104486172A (en) * | 2014-11-20 | 2015-04-01 | 北京交控科技有限公司 | Urban track traffic integrated wireless transmission system based on LTE (long term evolution) |
-
2015
- 2015-11-10 CN CN201510762892.3A patent/CN106686553B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130336220A1 (en) * | 2011-01-14 | 2013-12-19 | Nokia Siemens Networks Oy | Single Carrier Cell Aggregation |
| CN103796191A (en) * | 2014-03-05 | 2014-05-14 | 大唐移动通信设备有限公司 | Method, device and terminal for sending data to user terminal |
| CN104219769A (en) * | 2014-09-15 | 2014-12-17 | 国家电网公司 | LTE-based high-speed rail wireless communication system and resource distribution method thereof |
| CN104486172A (en) * | 2014-11-20 | 2015-04-01 | 北京交控科技有限公司 | Urban track traffic integrated wireless transmission system based on LTE (long term evolution) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121016A (en) * | 2018-08-06 | 2019-01-01 | 深圳宇翊技术股份有限公司 | A kind of efficient transmission method for realizing PIS data file based on IP multicast |
| CN109121016B (en) * | 2018-08-06 | 2021-03-23 | 深圳宇翊技术股份有限公司 | Method for realizing efficient transmission of PIS data file based on IP multicast |
| CN110831058A (en) * | 2018-08-08 | 2020-02-21 | 成都鼎桥通信技术有限公司 | PIS data transmission method and device |
| CN110868701A (en) * | 2018-08-28 | 2020-03-06 | 比亚迪股份有限公司 | Vehicle-mounted access equipment, control method thereof and rail vehicle |
| CN109327810A (en) * | 2018-09-29 | 2019-02-12 | 北京中兴高达通信技术有限公司 | A kind of subway PIS business method of multicasting and device based on the cluster communication of the broadband LTE |
| CN109327810B (en) * | 2018-09-29 | 2021-06-11 | 北京中兴高达通信技术有限公司 | Subway PIS service multicast method and device based on LTE broadband trunking communication |
| CN109511099A (en) * | 2018-11-06 | 2019-03-22 | 武汉虹信通信技术有限责任公司 | A kind of TAU main/standby switching method |
| CN109511099B (en) * | 2018-11-06 | 2022-03-04 | 武汉虹信科技发展有限责任公司 | TAU master-slave switching method |
| CN112087737A (en) * | 2019-06-14 | 2020-12-15 | 华为技术有限公司 | Communication method, device and system |
| CN112087737B (en) * | 2019-06-14 | 2022-02-11 | 华为技术有限公司 | Communication method, device and system |
| US12089124B2 (en) | 2019-06-14 | 2024-09-10 | Huawei Technologies Co., Ltd. | Communication method, apparatus, and system |
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|---|---|
| CN106686553B (en) | 2020-07-17 |
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