CN109150812A - Data transmission method, apparatus and system - Google Patents
Data transmission method, apparatus and system Download PDFInfo
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- CN109150812A CN109150812A CN201710503112.2A CN201710503112A CN109150812A CN 109150812 A CN109150812 A CN 109150812A CN 201710503112 A CN201710503112 A CN 201710503112A CN 109150812 A CN109150812 A CN 109150812A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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Abstract
The present patent application provides data transmission method, apparatus and system.Method is applied in the PROFINET network using LTE network as transmission medium, method includes: that the P-GW in LTE network receives the PROFINET data frame from PROFINET network, PROFINET data priority is parsed from the PROFINET data frame, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, the LTE data priority that the PROFINET data priority parsed is mapped to is determined；P-GW is that PROFINET data frame encapsulates LTE data priority field, the value of LTE data priority field is the LTE data priority being mapped to, LTE data are obtained, and establish the corresponding carrying of LTE data priority, obtained LTE data frame is passed through into the carrying.The embodiment of the present application is by being mapped to LTE data priority for PROFINET data priority, when so that PROFINET data being transmitted in the lte networks, is able to maintain original priority and real-time.
Description
Technical field
The present application relates to PROFINET (Industrial Ethernet) industrial application technical fields, in particular to LTE (Long
Term Evolution, long term evolution) network is as the data transmission method in the PROFINET network of transmission medium, Yi Jizuo
For the data transmission device and system in the LTE network of the transmission medium of PROFINET network.
Background technique
PROFINET is the data communications industries technical bid based on Industrial Ethernet proposed by PROFIBUS international organization
Standard, design object are that have and limit in strict time from industrial system devices collect data or control industrial system equipment
Under the advantage that carries out data transmission.
PROFINET supports three kinds of communication types: NRT (Non Real-Time, non real-time) communication, RT (Real-Time,
Communication and IRT (Isochronous Real-Time is synchronized in real time) communication in real time).NRT communication uses TCP
(Transmission Control Protocol, transmission control protocol) (UDP (User Datagram Protocol, user
Datagram protocol))/IP (Internet Protocol, Internet Protocol) data frame progress non real-time data transmission.RT communication
With the help of VLAN (Virtual Local Area Network, virtual LAN) label periodically/aperiodically
Transmitting real-time data (under PROFINET environment, means the bus cycles at 100 milliseconds) in real time.It is real whens IRT communications etc.
When data, realize that the bus cycles are substantially less than 1 millisecond, and the maximum deviation of bus clock is 1 microsecond.
It the considerations of due to new business demand and reducing cost of installation and maintenance, is got in industrial system using wireless technology
Come more universal.Currently, the standard for supporting wireless technology sufficiently to incorporate PROFINET application is IEEE (Institute of
Electrical and Electronics Engineers, Institute of Electrical and Electric Engineers) 802.11 (a, b, g, n)-nothings
Line local area network and IEEE802.15.1- bluetooth.
Summary of the invention
To solve the above problems, the embodiment of the present application provides a kind of data transmission method, to realize that PROFINET data exist
Priority can still be maintained when transmitting in LTE network；
A kind of data transmission method, this method are applied in the PROFINET network using LTE network as transmission medium, should
Method includes:
Packet data gateway P-GW in LTE network receives the PROFINET data frame from PROFINET network, from
PROFINET data priority is parsed in the PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to；
The P-GW is that the PROFINET data frame encapsulates LTE data priority field, the LTE data priority word
The value of section is the LTE data priority being mapped to, and obtains LTE data, and establish the corresponding carrying of LTE data priority,
Obtained LTE data frame is forwarded by the carrying.
The mapping ruler of PROFINET data priority to the LTE data priority includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
The P-GW is that PROFINET data frame encapsulation LTE data priority field includes:
The P-GW carries out LTE encapsulation to PROFINET data frame, and the QCI value of determining LTE network is encapsulated into
In the dscp field in the domain ToS of the IP head of PROFINET data frame.
The mapping ruler of PROFINET data priority to the LTE data priority predetermined is stored in P-GW
On,
Alternatively, the mapping ruler of PROFINET data priority to the LTE data priority predetermined is stored in
In "Policy and Charging Rules Function unit PCRF, and, the P-GW is according to PROFINET data priority predetermined to LTE
The mapping ruler of data priority, the LTE data priority for determining that the PROFINET data priority parsed is mapped to include:
The LTE high priority data that the P-GW is mapped to the PROFINET data priority that PCRF inquiry parses
Grade.
This method further comprises:
UE in LTE network parses PROFINET number from the PROFINET data frame for being sent to PROFINET network
According to priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination is parsed
The LTE data priority that is mapped to of PROFINET data priority, sent to the P-GW and carry the LTE data priority
After request is established in carrying, and the carrying between the P-GW is established, LTE encapsulation is carried out to the PROFINET data frame,
LTE data frame is obtained, obtained LTE data frame is sent by the carrying；
P-GW receives the LTE data frame from the carrying, carries out LTE decapsulation to the LTE data frame, obtains institute
PROFINET data frame is stated, sends PROFINET network for the PROFINET data frame.
The mapping ruler of PROFINET data priority to the LTE data priority includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
A kind of data transmission method, this method are applied in the PROFINET using long term evolution LTE network as transmission medium
In network, this method comprises:
UE in LTE network parses PROFINET number from the PROFINET data frame for being sent to PROFINET network
According to priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination is parsed
The LTE data priority that is mapped to of PROFINET data priority, the P-GW into LTE network, which is sent, carries the LTE data
After request is established in the carrying of priority, and the carrying between the P-GW is established, the PROFINET data frame is carried out
LTE encapsulation, obtains LTE data frame, and obtained LTE data frame is sent by the carrying；
The P-GW receives the LTE data frame from the carrying, carries out LTE decapsulation to the LTE data frame, obtains
To the PROFINET data frame, PROFINET network is sent by the PROFINET data frame.
The mapping ruler of PROFINET data priority to the LTE data priority includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
A kind of data transmission device, the device are located at the grouping of the LTE network of the transmission medium as PROFINET network
On data gateway P-GW, which includes:
Priority mapping determining module: the PROFINET data frame from PROFINET network is received, from this
PROFINET data priority is parsed in PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to；
It encapsulates forwarding module: encapsulating LTE data priority field for the PROFINET data frame, the LTE data are excellent
The value of first grade field is the LTE data priority being mapped to, and obtains LTE data, and it is corresponding to establish the LTE data priority
Carrying, obtained LTE data frame is forwarded by the carrying.
Described device further comprises priority mapping rule preserving module: for saving PROFINET number predetermined
According to priority to the mapping ruler of LTE data priority；
And the priority mapping determining module parses PROFINET data priority from the PROFINET data frame
Later, it is further used for before determining the LTE data priority that the PROFINET data priority that parses is mapped to, to described
The LTE data priority that the PROFINET data priority that the inquiry of priority mapping rule preserving module parses is mapped to.
The priority mapping determining module parsed from the PROFINET data frame PROFINET data priority it
Afterwards, it is further used for before determining the LTE data priority that the PROFINET data priority parsed is mapped to, is looked into PCRF
Ask the LTE data priority that the PROFINET data priority parsed is mapped to, wherein PROFINET data predetermined
The mapping ruler of priority to LTE data priority is stored on the PCRF.
A kind of data transmission system, the system are located in the LTE network as the transmission medium of PROFINET network, this is
System includes: packet data gateway P-GW and "Policy and Charging Rules Function unit PCRF, in which:
The P-GW: receiving the PROFINET data frame from PROFINET network, from the PROFINET data frame
PROFINET data priority is parsed, it is excellent to inquire the LTE data that the PROFINET data priority is mapped to the PCRF
First grade encapsulates LTE data priority field for the PROFINET data frame, and the value of the LTE data priority field is
The LTE data priority being mapped to, obtains LTE data frame, and establishes the corresponding carrying of LTE data priority, by what is obtained
LTE data frame is forwarded by the carrying；
The PCRF: the mapping ruler of preservation PROFINET data priority to LTE data priority.
The mapping ruler of PROFINET data priority to LTE data priority that the PCRF is saved includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
A kind of data transmission device, the device are located at the user of the LTE network of the transmission medium as PROFINET network
On equipment UE, which includes:
Priority mapping determining module: it is parsed from the PROFINET data frame for being sent to PROFINET network
PROFINET data priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority,
Determine the LTE data priority that the PROFINET data priority parsed is mapped to；
Forwarding module: the P-GW into LTE network, which is sent, carries the LTE high priority data that priority mapping determining module determines
After request is established in the carrying of grade, and the carrying between the P-GW is established, LTE envelope is carried out to the PROFINET data frame
Dress, obtains LTE data frame, and obtained LTE data frame is sent by the carrying.
Described device further comprises priority mapping rule preserving module: for saving PROFINET number predetermined
According to priority to the mapping ruler of LTE data priority；
And the priority mapping determining module is parsed from the PROFINET data frame for being sent to PROFINET network
Out after PROFINET data priority, the LTE data priority that the PROFINET data priority parsed is mapped to is determined
It is further used for before, the PROFINET data priority mapping parsed to priority mapping rule preserving module inquiry
The LTE data priority arrived.
The PROFINET data priority predetermined that the priority mapping rule preserving module saves is to LTE data
The mapping ruler of priority includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
A kind of data transmission system, which is characterized in that the system is located at the LTE of the transmission medium as PROFINET network
In network, which includes: user equipment (UE) and packet data gateway P-GW, in which:
The UE: PROFINET high priority data is parsed from the PROFINET data frame for being sent to PROFINET network
Grade is parsed according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination
The LTE data priority that PROFINET data priority is mapped to sends to the P-GW and carries holding for the LTE data priority
It carries and establishes request, and after the carrying foundation between the P-GW, LTE encapsulation is carried out to the PROFINET data frame, is obtained
To LTE data frame, obtained LTE data frame is sent by the carrying；
The P-GW: receiving the LTE data frame from the carrying, carry out LTE decapsulation to the LTE data frame,
The PROFINET data frame is obtained, sends PROFINET network for the PROFINET data frame.
The UE according to PROFINET data priority predetermined to LTE data priority mapping ruler, really
Surely the LTE data priority that the PROFINET data priority parsed is mapped to includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
The embodiment of the present application is by being mapped to LTE data priority for PROFINET data priority, so that PROFINET
When data are transmitted in the lte networks, it is able to maintain original priority and real-time；
Optionally, by the way that LTE data priority is mapped to PROFINET data priority, so that LTE data exist
When transmitting in PROFINET network, it is able to maintain original priority and real-time.
Detailed description of the invention
Fig. 1 is carried out in the PROFINET network using LTE network as transmission medium for what one embodiment of the application provided
The method flow diagram of data transmission；
Fig. 2 be another embodiment of the application provide in the PROFINET network using LTE network as transmission medium into
The method flow diagram of row data transmission；
Fig. 3 is the composition schematic diagram for the data transmission device that one embodiment of the application provides；
Fig. 4 is the composition schematic diagram for the data transmission system that one embodiment of the application provides；
Fig. 5 is the composition schematic diagram for the data transmission device that another embodiment of the application provides；
Fig. 6 is the composition schematic diagram for the data transmission system that another embodiment of the application provides.
Wherein, appended drawing reference is as follows:
Specific embodiment
In order to which the objects, technical solutions and advantages of the application are more clearly understood, with reference to the accompanying drawing and according to embodiment,
The technical solution of the application is described in detail.
Such as " one " and " described " of the singular used in the description of the present application and the appended claims
Also it is intended to include plural form, unless present disclosure is clearly separately specified.
Inventor to it is existing support wireless technology sufficiently incorporates PROFINET apply standard IEEE 802.11 (a, b, g,
N)-WLAN and IEEE802.15.1- bluetooth carry out analysis and find: either WLAN or bluetooth all exists:
Postpone that larger, covering surface is smaller and does not support the defect of wholesale access point.
And LTE is that 3GPP (3rd Generation Partnership Project, third generation cooperative partner program) is opened
The high-speed radiocommunication standard of hair has low latency, the advantage of broad covered area, extensive access node capacity.Due to these phases
The advantages of to WLAN and bluetooth, inventor expect in industrial application using LTE, especially can be in conjunction with PROFINET
It uses.
When using LTE in industrial application, it is necessary to consider that: data stream priority, which is that one in industrial application is important, to be examined
Worry factor.Respective priority aspects have been provided to be applied to data flow in PROFINET and LTE, and each operates in phase
In same Ethernet.But has a problem in that their own priority aspects are incompatible to other side.
Under certain industrial application scenes, data flow needs to leave PROFINET network and enters LTE network, later further out
LTE network enters PROFINET network.Once data flow leaves PROFINET network, it may lose all priority letters
Breath, when all data flows are all equally treated, this will lead to the failure in automated system, because the flow of high priority needs
Priority processing is wanted, to ensure low latency.
In PROFINET IO (Input Output, input and output) tranmitting data register, according to different priority, data
Frame has different transmission sequences.In LTE, 3GPP 23.203LTE specification table 6.1.7 defines different EPS (Evolved
Packet System, evolved packet system) carrying grade QCI (QoS Class Identifier, QoS class letter).It is above-mentioned
Priority has been applied to dedicated PROFINET network or dedicated LTE network at present.But due to their incompatible essence,
It is not applicable to hybrid network (i.e. PROFINET network includes the LTE network as wireless transmission medium).
Therefore, the application mainly proposes that the data in the PROFINET network using LTE network as transmission medium are transmitted
Scheme, realized in the data transmission scheme PROFINET data can still be maintained when transmitting in the lte networks priority and
Real-time.
Data transmission method provided by the present application is applied in the PROFINET network using LTE network as transmission medium,
This method comprises:
P-GW (PDN-GateWay, grouped data network gateway) in LTE network is received from PROFINET network
PROFINET data frame parses PROFINET data priority from the PROFINET data frame, according to predetermined
PROFINET data priority determines that the PROFINET data priority parsed reflects to the mapping ruler of LTE data priority
The LTE data priority being mapped to；
P-GW is that PROFINET data frame encapsulates LTE data priority field, and the value of LTE data priority field is to reflect
The LTE data priority being mapped to, obtains LTE data, and establishes the corresponding carrying of LTE data priority, the LTE number that will be obtained
It is forwarded according to frame by the carrying.
Optionally, the mapping ruler of PROFINET data priority to LTE data priority includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no RT_Class_UDP (the applicable rank UDP in real time) frame of VLAN tag and LLDP in PROFINET network
The data priority of (Link Layer Discovery Protocol, Link Layer Discovery Protocol) frame is mapped to LTE network
QCI 4。
Optionally, P-GW is that PROFINET data frame encapsulation LTE data priority field includes:
P-GW carries out LTE encapsulation to PROFINET data frame, and the QCI value of determining LTE network is encapsulated into PROFINET
DSCP (the Differentiated Services in ToS (Type of Service, service type) domain of the IP head of data frame
Code Point, differentiated services code points) in field.
Optionally, the mapping ruler of PROFINET data priority to LTE data priority predetermined is stored in P-
On GW,
Alternatively, the mapping ruler of PROFINET data priority to LTE data priority predetermined is stored in PCRF
In (Policy and Charging Rules Function, "Policy and Charging Rules Function unit), and, P-GW is according in advance
The PROFINET data priority of definition determines that the PROFINET data parsed are excellent to the mapping ruler of LTE data priority
The LTE data priority that first grade is mapped to includes:
The LTE data priority that P-GW is mapped to the PROFINET data priority that PCRF inquiry parses.
Optionally, the UE in LTE network (User Equipment, user equipment) is from being sent to PROFINET network
PROFINET data priority is parsed in PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to,
It is sent to P-GW and carries the carrying foundation request of the LTE data priority, and after the carrying foundation between P-GW, it is right
PROFINET data frame carries out LTE encapsulation, obtains LTE data frame, obtained LTE data frame is sent by the carrying；
P-GW receives LTE data frame from the carrying, carries out LTE decapsulation to LTE data frame, obtains PROFINET data frame, will
PROFINET data frame is sent to PROFINET network.
Optionally, the mapping ruler of PROFINET data priority to LTE data priority includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data priority of the RT_Class_UDP frame of VLAN tag and LLDP frame to be mapped in PROFINET network
The QCI 4 of LTE network.
Another data transmission method provided by the present application is also employed in the PROFINET net using LTE network as transmission medium
In network, this method comprises:
UE in LTE network parses PROFINET number from the PROFINET data frame for being sent to PROFINET network
According to priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination is parsed
The LTE data priority that is mapped to of PROFINET data priority, the P-GW into LTE network, which is sent, carries the LTE data
After request is established in the carrying of priority, and the carrying between P-GW is established, LTE encapsulation is carried out to PROFINET data frame,
LTE data frame is obtained, obtained LTE data frame is sent by the carrying；
P-GW receives LTE data frame from the carrying, carries out LTE decapsulation to LTE data frame, obtains PROFINET data
PROFINET data frame is sent PROFINET network by frame.
Optionally, the mapping ruler of PROFINET data priority to LTE data priority includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
A data transmission device provided by the present application is located at the P- of the LTE network of the transmission medium as PROFINET network
On GW, which includes:
Priority mapping determining module: the PROFINET data frame from PROFINET network is received, from this
PROFINET data priority is parsed in PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to；
It encapsulates forwarding module: encapsulating LTE data priority field, LTE data priority field for PROFINET data frame
Value be the LTE data priority being mapped to, obtain LTE data, and establish the corresponding carrying of LTE data priority, will
Obtained LTE data frame is forwarded by the carrying.
Optionally, which further comprises priority mapping rule preserving module: predetermined for saving
Mapping ruler of the PROFINET data priority to LTE data priority；
And priority mapping determining module parsed from the PROFINET data frame PROFINET data priority it
Afterwards, it is further used for before determining the LTE data priority that the PROFINET data priority parsed is mapped to, to priority
The LTE data priority that the PROFINET data priority that the inquiry of mapping ruler preserving module parses is mapped to.
Optionally, priority mapping determining module parses PROFINET data priority from the PROFINET data frame
Later, it is further used for before determining the LTE data priority that the PROFINET data priority parsed is mapped to, to PCRF
Inquire the LTE data priority that the PROFINET data priority parsed is mapped to, wherein PROFINET number predetermined
It is stored on PCRF according to the mapping ruler of priority to LTE data priority.
A data transmission system provided by the present application is located in the LTE network as the transmission medium of PROFINET network,
The system includes: P-GW and strategy and PCRF, in which:
P-GW: receiving the PROFINET data frame from PROFINET network, parses from the PROFINET data frame
PROFINET data priority out inquires the LTE data priority that the PROFINET data priority is mapped to PCRF, is
PROFINET data frame encapsulates LTE data priority field, and the value of LTE data priority field is the LTE data being mapped to
Priority obtains LTE data frame, and establishes the corresponding carrying of LTE data priority, by obtained LTE data frame by being somebody's turn to do
Carrying forwards；
PCRF: the mapping ruler of preservation PROFINET data priority to LTE data priority.
Optionally, the mapping ruler of PROFINET data priority to the LTE data priority of PCRF preservation includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
Another data transmission device provided by the present application also is located at the LTE network of the transmission medium as PROFINET network
UE on, which includes:
Priority mapping determining module: it is parsed from the PROFINET data frame for being sent to PROFINET network
PROFINET data priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority,
Determine the LTE data priority that the PROFINET data priority parsed is mapped to；
Forwarding module: the P-GW into LTE network, which is sent, carries the LTE high priority data that priority mapping determining module determines
After request is established in the carrying of grade, and the carrying between P-GW is established, LTE encapsulation is carried out to PROFINET data frame, is obtained
LTE data frame sends obtained LTE data frame by the carrying.
Optionally, which further comprises priority mapping rule preserving module: predetermined for saving
Mapping ruler of the PROFINET data priority to LTE data priority；
And priority mapping determining module is parsed from the PROFINET data frame for being sent to PROFINET network
After PROFINET data priority, determine LTE data priority that the PROFINET data priority that parses is mapped to it
It takes a step forward and is used for, what the PROFINET data priority parsed to the inquiry of priority mapping rule preserving module was mapped to
LTE data priority.
Optionally, the PROFINET data priority predetermined that priority mapping rule preserving module saves is to LTE
The mapping ruler of data priority includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data priority of the RT_Class_UDP frame of VLAN tag and LLDP frame to be mapped in PROFINET network
The QCI 4 of LTE network.
Another data transmission system provided by the present application also is located at the LTE network of the transmission medium as PROFINET network
In, which includes: UE and P-GW, in which:
UE: parsing PROFINET data priority from the PROFINET data frame for being sent to PROFINET network,
It is parsed according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination
The LTE data priority that PROFINET data priority is mapped to, the carrying for carrying the LTE data priority to P-GW transmission are built
Vertical request, and after the carrying foundation between P-GW, LTE encapsulation is carried out to PROFINET data frame, obtains LTE data frame,
Obtained LTE data frame is sent by the carrying；
P-GW: receiving LTE data frame from the carrying, carries out LTE decapsulation to LTE data frame, obtains PROFINET number
According to frame, PROFINET network is sent by PROFINET data frame.
Optionally, UE according to PROFINET data priority predetermined to LTE data priority mapping ruler,
The LTE data priority for determining that the PROFINET data priority that parses is mapped to includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data priority of the RT_Class_UDP frame of VLAN tag and LLDP frame to be mapped in PROFINET network
The QCI 4 of LTE network.
The application is described in detail below:
Fig. 1 is carried out in the PROFINET network using LTE network as transmission medium for what one embodiment of the application provided
The method flow diagram of data transmission, the specific steps of which are as follows:
It is pre-saved on the PCRF of step 100:LTE EPC (Evolved Packet Core, evolution block core) network
Mapping ruler of the PROFINET data priority to LTE data priority.
Table 1 is that PROFINET priority identifies table
Table 1
Table 2 is LTE QCI property list
Table 2
When defining mapping ruler of the PROFINET data priority to LTE data priority, main consideration is following several
Aspect:
1, IRT is communicated, usually passes through specific ASIC (Application Specific Integrated
Circuit, application specific integrated circuit) hardware realization, it is stringent to the performance requirement of wireless technology, and therefore, the application does not examine
Consider the application of IRT PROFINET data in the lte networks.Specifically, because IRT communication uses PTCP and RT_Class_3 frame,
Therefore, the application do not consider PTCP and RT_Class_3 frame to LTE network priority mapping.
2, there is presently no the medium redundancy applications in realization wireless network therefore not to consider MRP and MRRT frame to LTE
The priority mapping of network.
3, all PROFINET data are mapped to GBR EPS bearing bed, to guarantee to be assigned in transmission process
Enough resources meet industrial application requirement.
4, the PROFINET data (including: RT_Class_1 frame and RTA frame) that VLAN priority is 5 and 6 are mapped to LTE
The QCI 3 of network, to guarantee that delay in 50ms, meets RT communicating requirement.
5, by no VLAN tag and VLAN priority be 0 PROFINET data (include: RT_Class_UDP frame and
DCP frame) it is mapped to the QCI 4 of LTE network, it is required although having given up delay in this way, being that of obtaining the smallest height of packet loss can
By link.
6, using the mapping ruler, RT data still can keep in the lte networks it to define in PROFINET network
Priority.
The mapping ruler of the PROFINET data priority to the LTE data priority that then finally define is as follows:
1) data priority of VLAN priority is 5 and 6 RT_Class_1 frame and RTA frame is mapped to the QCI of LTE network
3；
The particular content of mapping ruler are as follows: the VLAN priority 5 or 6 in PROFINET network is mapped as the QCI of LTE network
3。
2) the DCP frame that the RT_Class_UDP frame of VLAN tag and LLDP frame and VLAN priority are not 0 is mapped to
The QCI 4 of LTE network.
The particular content of mapping ruler are as follows:
21) the VLAN priority 0 in PROFINET network is mapped as the QCI 4 of LTE network；
22) in PROFINET network without Vlan tag and EtherType is 0x8000, Frame_ID is 0xC000-
The priority mapping of the PROFINET data frame of 0xF7FF or 0xF800-0xFBFF is the QCI 4 of LTE network；
23) in PROFINET network without Vlan tag and EtherType is the PROFINET data frame of 0x88CC
Priority mapping is the QCI 4 of LTE network.
P-GW in step 101:LTE network receives PROFINET data frame, parses from the PROFINET data frame
VLAN priority, EtherType and Frame_ID out.
Step 102:P-GW is inquired to PCRF and is corresponded to according to VLAN priority, EtherType and the Frame_ID parsed
QCI value.
In practical applications, P-GW first can inquire corresponding QCI value to PCRF according to VLAN priority, if inquiring,
Go to step 103；If not inquiring, continue to inquire corresponding QCI value to PCRF according to EtherType and Frame_ID, if
It inquires, then goes to step 103, otherwise, priority mapping processing is not carried out to PROFINET data frame, directly progress LTE envelope
After dress, it is transmitted to S-GW (Serving-GateWay, gateway).
Step 103: if P-GW inquires QCI value, LTE encapsulation being carried out to PROFINET data frame, which is encapsulated
Into the IP head of PROFINET data frame, LTE data frame is obtained, obtained LTE data frame is sent to S-GW.
In a particular application, QCI value can be encapsulated into the IP dscp fields in the domain ToS.Such as: when QCI value is 3
When, dscp field value EF；When QCI value is 4, dscp field value AF41.
Step 104:S-GW receives the LTE data frame, which is transmitted to eNB (evolved
NodeBase, evolution base station).
Step 105:eNB receives the LTE data frame, parses QCI from the tos field of the IP head of the LTE data frame
Value configures related wireless parameter and dispatching algorithm, which is transmitted to UE according to the QCI value.
The related wireless parameter of configuration is such as: power, physical resource, priorities associated.
In practical applications, the mapping ruler of PROFINET data priority to LTE data priority can also be saved directly
On P-GW, to facilitate P-GW to inquire.
Fig. 2 be another embodiment of the application provide in the PROFINET network using LTE network as transmission medium into
The method flow diagram of row data transmission, the specific steps of which are as follows:
UE in step 200:LTE network pre-saves the mapping of PROFINET data priority to LTE data priority
Rule.
PROFINET data priority in this step to LTE data priority mapping ruler content and step 100
In it is identical, all are as follows:
1) the VLAN priority 5 or 6 in PROFINET network is mapped as the QCI 3 of LTE network.
2) the VLAN priority 0 in PROFINET network is mapped as the QCI 4 of LTE network；
3) there is no the mapping of the data priority of the RT_Class_UDP frame of VLAN tag and LLDP frame in PROFINET network
To the QCI 4 of LTE network.
Specifically, in PROFINET network without Vlan tag and EtherType is 0x8000, Frame_ID is
The priority mapping of the PROFINET data frame of 0xC000-0xF7FF or 0xF800-0xFBFF is the QCI 4 of LTE network；
In PROFINET network without Vlan tag and EtherType is the preferential of the PROFINET data frame of 0x88CC
Grade is mapped as the QCI 4 of LTE network.
Step 201:UE receives the PROFINET data frame from PROFINET network, from the PROFINET data frame
Parse PROFINET data priority.
In practical applications, UE itself may also generate the PROFINET data frame for needing to be sent to PROFINET network.
Step 202:UE according to the mapping ruler of the PROFINET data priority itself saved to LTE data priority,
Determine the LTE data priority that the PROFINET data priority parsed is mapped to.
P-GW of the step 203:UE into LTE network sends the carrying foundation request for carrying determining LTE data priority,
And after the carrying between P-GW is established, LTE encapsulation is carried out to the PROFINET data frame received, obtains LTE data frame,
Obtained LTE data frame is sent by the carrying established.
Step 204:P-GW receives LTE data frame from the carrying, carries out LTE decapsulation to the LTE data frame, obtains original
The original PROFINET data frame is sent PROFINET network by beginning PROFINET data frame.
Fig. 3 is the composition schematic diagram for the data transmission device 31 that one embodiment of the application provides, which is located at conduct
On the P-GW of the LTE network of the transmission medium of PROFINET network, which specifically includes that priority mapping determining module
311 and encapsulation forwarding module 312, in which:
Priority mapping determining module 311: the PROFINET data frame from PROFINET network is received, from this
PROFINET data priority is parsed in PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to.
Wherein, mapping ruler of the PROFINET data priority to LTE data priority can include:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data priority of the RT_Class_UDP frame of VLAN tag and LLDP frame to be mapped in PROFINET network
The QCI 4 of LTE network.
Encapsulation forwarding module 312: LTE is encapsulated for the PROFINET data frame that priority mapping determining module 311 receives
Data priority field, the value of the LTE data priority field are the LTE high priority data for encapsulating forwarding module 312 and being mapped to
Grade, obtains LTE data frame, and establish the corresponding carrying of LTE data priority, obtained LTE data frame is forwarded.
Optionally, which further comprises priority mapping rule preserving module: predetermined for saving
Mapping ruler of the PROFINET data priority to LTE data priority；And
Priority mapping determining module 311 parsed from the PROFINET data frame PROFINET data priority it
Afterwards, it is further used for before determining the LTE data priority that the PROFINET data priority parsed is mapped to, to priority
The LTE data priority that the PROFINET data priority that the inquiry of mapping ruler preserving module parses is mapped to.
Optionally, it is excellent to parse PROFINET data from the PROFINET data frame for priority mapping determining module 311
After first grade, determine that the LTE data priority that the PROFINET data priority parsed is mapped to is further used for before, to
The LTE data priority that the PROFINET data priority that PCRF inquiry parses is mapped to, wherein predetermined
The mapping ruler of PROFINET data priority to LTE data priority is stored on the PCRF.
Fig. 4 is the composition schematic diagram for the data transmission system 41 that one embodiment of the application provides, which is located at conduct
In the LTE network of the transmission medium of PROFINET network, which specifically includes that P-GW 411 and PCRF 412, in which:
P-GW 411: receiving the PROFINET data frame from PROFINET network, from the PROFINET data frame
PROFINET data priority is parsed, it is excellent to inquire the LTE data that the PROFINET data priority is mapped to PCRF 412
First grade encapsulates LTE data priority field for the PROFINET data frame, and the value of the LTE data priority field is to reflect
The LTE data priority being mapped to, obtains LTE data frame, and establishes the corresponding carrying of LTE data priority, the LTE that will be obtained
Data frame is forwarded by the carrying.
PCRF 412: the mapping ruler of preservation PROFINET data priority to LTE data priority.
Optionally, the mapping ruler of PROFINET data priority to the LTE data priority of the preservation of PCRF 412 includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data priority of the RT_Class_UDP frame of VLAN tag and LLDP frame to be mapped in PROFINET network
The QCI 4 of LTE network.
Fig. 5 is the composition schematic diagram for the data transmission device 51 that another embodiment of the application provides, which is located at conduct
On the UE of the LTE network of the transmission medium of PROFINET network, the device mainly includes:
Priority mapping determining module 511: it is parsed from the PROFINET data frame for being sent to PROFINET network
PROFINET data priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority,
Determine the LTE data priority that the PROFINET data priority parsed is mapped to.
Forwarding module 512: the P-GW into LTE network, which is sent, carries the LTE number that priority mapping determining module 511 determines
Request is established according to the carrying of priority, and after the carrying foundation between P-GW, priority mapping determining module 511 is received
The PROFINET data frame arrived carries out LTE encapsulation, obtains LTE data frame, obtained LTE data frame is sent out by the carrying
It goes.
Optionally, above-mentioned apparatus further comprises priority mapping rule preserving module: predetermined for saving
Mapping ruler of the PROFINET data priority to LTE data priority；
And priority mapping determining module 511 is parsed from the PROFINET data frame for being sent to PROFINET network
Out after PROFINET data priority, the LTE data priority that the PROFINET data priority parsed is mapped to is determined
It is further used for before, what the PROFINET data priority parsed to the inquiry of priority mapping rule preserving module was mapped to
LTE data priority.
Optionally, the PROFINET data priority predetermined that priority mapping rule preserving module saves is to LTE
The mapping ruler of data priority includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the number of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame in PROFINET network
According to the QCI 4 of priority mapping to LTE network.
Fig. 6 is the composition schematic diagram for the data transmission system 61 that another embodiment of the application provides, which is located at conduct
In the LTE network of the transmission medium of PROFINET network, which specifically includes that UE 611 and P-GW 612, in which:
UE 611: PROFINET high priority data is parsed from the PROFINET data frame for being sent to PROFINET network
Grade is parsed according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination
The LTE data priority that PROFINET data priority is mapped to sends to P-GW 612 and carries holding for the LTE data priority
It carries and establishes request, and after the carrying foundation between P-GW 612, LTE encapsulation is carried out to PROFINET data frame, obtains LTE
Data frame sends obtained LTE data frame by the carrying.
P-GW 612: receiving the LTE data frame from the carrying between UE 611, carries out LTE to the LTE data frame
Decapsulation, obtains original PROFINET data frame, sends PROFINET network for the original PROFINET data frame.
Optionally, mapping of the PROFINET data priority predetermined of 611 basis of UE to LTE data priority
Rule, the LTE data priority for determining that the PROFINET data priority parsed is mapped to include:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data priority of the RT_Class_UDP frame peace talks LLDP frame of VLAN tag to map in PROFINET network
To the QCI 4 of LTE network.
The advantageous effects of the application are as follows:
By the way that PROFINET data priority is mapped to LTE data priority, so that PROFINET data are in LTE network
When middle transmission, it is able to maintain original priority and real-time；
Optionally, by the way that LTE data priority is mapped to PROFINET data priority, so that LTE data exist
When transmitting in PROFINET network, it is able to maintain original priority and real-time.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (18)
1. data transmission method, which is characterized in that this method is applied using long term evolution LTE network as transmission medium
In PROFINET network, this method comprises:
Packet data gateway P-GW in LTE network receives the PROFINET data frame from PROFINET network, from this
PROFINET data priority is parsed in PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to；
The P-GW is that the PROFINET data frame encapsulates LTE data priority field, the LTE data priority field
Value is the LTE data priority being mapped to, and obtains LTE data, and establishes the corresponding carrying of LTE data priority, will
To LTE data frame forwarded by the carrying.
2. the method according to claim 1, wherein the PROFINET data priority is to LTE high priority data
Grade mapping ruler include:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame excellent in PROFINET network
First grade is mapped to the QCI 4 of LTE network.
3. according to the method described in claim 2, it is characterized in that, the P-GW is that the PROFINET data frame encapsulates LTE
Data priority field includes:
The P-GW carries out LTE encapsulation to PROFINET data frame, and the QCI value of determining LTE network is encapsulated into PROFINET
In the dscp field in the domain ToS of the IP head of data frame.
4. the method according to claim 1, wherein the PROFINET data priority predetermined arrives
The mapping ruler of LTE data priority is stored on P-GW,
Alternatively, the mapping ruler of PROFINET data priority to the LTE data priority predetermined is stored in strategy
In charging rule functions unit PCRF, and, the P-GW is according to PROFINET data priority predetermined to LTE data
The mapping ruler of priority, the LTE data priority for determining that the PROFINET data priority parsed is mapped to include:
The LTE data priority that the P-GW is mapped to the PROFINET data priority that PCRF inquiry parses.
5. the method according to claim 1, wherein this method further comprises:
It is excellent that UE in LTE network parses PROFINET data from the PROFINET data frame for being sent to PROFINET network
First grade is parsed according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination
The LTE data priority that PROFINET data priority is mapped to sends to the P-GW and carries holding for the LTE data priority
It carries and establishes request, and after the carrying foundation between the P-GW, LTE encapsulation is carried out to the PROFINET data frame, is obtained
To LTE data frame, obtained LTE data frame is sent by the carrying；
P-GW receives the LTE data frame from the carrying, carries out LTE decapsulation to the LTE data frame, obtains described
The PROFINET data frame is sent PROFINET network by PROFINET data frame.
6. according to the method described in claim 5, it is characterized in that, the PROFINET data priority is to LTE high priority data
Grade mapping ruler include:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame excellent in PROFINET network
First grade is mapped to the QCI 4 of LTE network.
7. data transmission method, which is characterized in that this method is applied using long term evolution LTE network as transmission medium
In PROFINET network, this method comprises:
It is excellent that UE in LTE network parses PROFINET data from the PROFINET data frame for being sent to PROFINET network
First grade is parsed according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination
The LTE data priority that PROFINET data priority is mapped to, it is excellent that the P-GW transmission into LTE network carries the LTE data
After request is established in the carrying of first grade, and the carrying between the P-GW is established, LTE is carried out to the PROFINET data frame
Encapsulation, obtains LTE data frame, and obtained LTE data frame is sent by the carrying；
The P-GW receives the LTE data frame from the carrying, carries out LTE decapsulation to the LTE data frame, obtains institute
PROFINET data frame is stated, sends PROFINET network for the PROFINET data frame.
8. the method according to the description of claim 7 is characterized in that the PROFINET data priority is to LTE high priority data
Grade mapping ruler include:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame excellent in PROFINET network
First grade is mapped to the QCI 4 of LTE network.
9. data transmission device (31), which is characterized in that the device (31) is located at the transmission medium as PROFINET network
On the packet data gateway P-GW of long term evolution LTE network, which includes:
Priority mapping determining module (311): the PROFINET data frame from PROFINET network is received, from this
PROFINET data priority is parsed in PROFINET data frame, is arrived according to PROFINET data priority predetermined
The mapping ruler of LTE data priority determines the LTE data priority that the PROFINET data priority parsed is mapped to；
Encapsulation forwarding module (312): the PROFINET data frame encapsulation received for priority mapping determining module (311)
LTE data priority field, the value of the LTE data priority field are that priority mapping determining module (311) are mapped to
LTE data priority, obtain LTE data, and establish the corresponding carrying of LTE data priority, the LTE data frame that will be obtained
It is forwarded by the carrying.
10. device (31) according to claim 9, which is characterized in that described device (31) further comprises that priority is reflected
Penetrate regular preserving module: the mapping ruler for saving PROFINET data priority predetermined to LTE data priority；
And the priority mapping determining module (311) parses PROFINET high priority data from the PROFINET data frame
After grade, determine that the LTE data priority that the PROFINET data priority parsed is mapped to is further used for before, to institute
State the LTE data priority that the PROFINET data priority that the inquiry of priority mapping rule preserving module parses is mapped to.
11. device (31) according to claim 9, which is characterized in that the priority mapping determining module (311) from this
After parsing PROFINET data priority in PROFINET data frame, determine that the PROFINET data priority parsed reflects
It is further used for before the LTE data priority being mapped to, the PROFINET data priority parsed to PCRF inquiry is mapped to
LTE data priority, wherein the mapping ruler of PROFINET data priority predetermined to LTE data priority is protected
There are on the PCRF.
12. data transmission system (41), which is characterized in that the system is located at the long-term of the transmission medium as PROFINET network
In evolution LTE network, which includes: packet data gateway P-GW (411) and "Policy and Charging Rules Function unit PCRF
(412), in which:
The P-GW (411): receiving the PROFINET data frame from PROFINET network, from the PROFINET data frame
PROFINET data priority is parsed, inquires the LTE number that the PROFINET data priority is mapped to the PCRF (412)
According to priority, LTE data priority field is encapsulated for the PROFINET data frame, the LTE data priority field takes
Value is the LTE data priority being mapped to, and obtains LTE data frame, and establishes the corresponding carrying of LTE data priority, will
To LTE data frame forwarded by the carrying；
The PCRF (412): the mapping ruler of preservation PROFINET data priority to LTE data priority.
13. system according to claim 12, which is characterized in that the PROFINET data that the PCRF (412) saves are excellent
The mapping ruler of first grade to LTE data priority includes:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame excellent in PROFINET network
First grade is mapped to the QCI 4 of LTE network.
14. data transmission device (51), which is characterized in that the device (51) is located at the transmission medium as PROFINET network
On the user equipment (UE) of long term evolution LTE network, which includes:
Priority mapping determining module (511): it is parsed from the PROFINET data frame for being sent to PROFINET network
PROFINET data priority, according to the mapping ruler of PROFINET data priority predetermined to LTE data priority,
Determine the LTE data priority that the PROFINET data priority parsed is mapped to；
Forwarding module (512): the P-GW into LTE network, which is sent, carries the LTE number that priority mapping determining module (511) determine
Establish request according to the carrying of priority, and after carrying between the P-GW is established, to the PROFINET data frame into
Row LTE encapsulation, obtains LTE data frame, and obtained LTE data frame is sent by the carrying.
15. device (51) according to claim 14, which is characterized in that described device (51) further comprises that priority is reflected
Penetrate regular preserving module: the mapping ruler for saving PROFINET data priority predetermined to LTE data priority；
And the priority mapping determining module (511) solves from the PROFINET data frame for being sent to PROFINET network
After precipitation PROFINET data priority, determine the LTE high priority data that the PROFINET data priority parsed is mapped to
It is further used for before grade, the PROFINET data priority parsed to priority mapping rule preserving module inquiry reflects
The LTE data priority being mapped to.
16. device (51) according to claim 15, which is characterized in that the priority mapping rule preserving module saves
The mapping ruler of PROFINET data priority to LTE data priority predetermined include:
The virtual LAN VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame excellent in PROFINET network
First grade is mapped to the QCI 4 of LTE network.
17. data transmission system (61), which is characterized in that the system (61) is located at the transmission medium as PROFINET network
In long term evolution LTE network, which includes: user equipment (UE) (611) and packet data gateway P-GW (612), in which:
The UE (611): it is excellent that PROFINET data are parsed from the PROFINET data frame for being sent to PROFINET network
First grade is parsed according to the mapping ruler of PROFINET data priority predetermined to LTE data priority, determination
The LTE data priority that PROFINET data priority is mapped to sends to the P-GW (612) and carries the LTE high priority data
After request is established in the carrying of grade, and the carrying between the P-GW (612) is established, the PROFINET data frame is carried out
LTE encapsulation, obtains LTE data frame, and obtained LTE data frame is sent by the carrying；
The P-GW (612): receiving the LTE data frame from the carrying, carry out LTE decapsulation to the LTE data frame,
The PROFINET data frame is obtained, sends PROFINET network for the PROFINET data frame.
18. system (61) according to claim 17, which is characterized in that UE (611) basis it is predetermined
PROFINET data priority determines that the PROFINET data priority parsed reflects to the mapping ruler of LTE data priority
The LTE data priority being mapped to includes:
The VLAN priority 5 or 6 of PROFINET network is mapped to the QCI 3 of LTE network；
The VLAN priority 0 of PROFINET network is mapped to the QCI 4 of LTE network；
There is no the data of the RT_Class_UDP frame of VLAN tag and Link Layer Discovery Protocol LLDP frame excellent in PROFINET network
First grade is mapped to the QCI 4 of LTE network.
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| CN201710503112.2A CN109150812A (en) | 2017-06-27 | 2017-06-27 | Data transmission method, apparatus and system |
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| CN201710503112.2A CN109150812A (en) | 2017-06-27 | 2017-06-27 | Data transmission method, apparatus and system |
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