CN110430137B - Message processing method and device based on S11 interface - Google Patents
Message processing method and device based on S11 interface Download PDFInfo
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- CN110430137B CN110430137B CN201910654158.3A CN201910654158A CN110430137B CN 110430137 B CN110430137 B CN 110430137B CN 201910654158 A CN201910654158 A CN 201910654158A CN 110430137 B CN110430137 B CN 110430137B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/741—Routing in networks with a plurality of addressing schemes, e.g. with both IPv4 and IPv6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The application provides a message processing method and a device based on an S11 interface, which are applied to network equipment, wherein the method comprises the following steps: acquiring messages mirrored from S11 interfaces of an MME and an SGW; determining the type of the message; if the type of the message is determined to be a session creation request message, establishing a first node, storing a first home terminal IP address, a first home terminal TEID and first selected information carried by the message in the first node, and hanging the first node in an uplink chain table of a cross chain table; and if the type of the message is determined to be the establishment of the session response message, searching a second node corresponding to the first opposite-end IP address and the first opposite-end TEID carried by the message in the uplink linked list, and if the second node is searched in the uplink linked list, storing a second local-end IP address, a second local-end TEID and second selected information carried by the message in the second node, and hanging the second node in a downlink linked list of the cross linked list. By applying the embodiment of the application, the difficulty of information storage can be reduced, and the efficiency of information query can be improved.
Description
Technical Field
The application relates to the technical field of network communication, in particular to a message processing method and device based on an S11 interface.
Background
A Generation (G) network is mainly divided into an access network and a core network, and fig. 1 shows an architecture diagram of the G network. The access network mainly comprises User Equipment (UE) and a base station (evolved Node B, eNB), and mainly includes a Radio Resource Control (RRC) interface and an s1ap interface; the core Network mainly includes a Mobility Management Entity (MME), a Serving Gateway (SGW), a Public Data Network gateway (PGW), a Home Subscriber Server (HSS), and the like, and mainly includes an S11 interface, an S5S8 interface, and an S6a interface.
The S11 interface is a packet transmission interface between the MME and the SGW, and in the UE attachment phase, a control plane tunnel is first established for the UE between the MME and the SGW, and subsequent packets of the UE can be transmitted based on the control plane tunnel. At present, a special network device may be configured to process a message based on an S11 interface, where the specific processing method is to, after obtaining a CREATE SESSION REQUEST message (CREATE SESSION REQUEST) carrying a home Internet Protocol (Internet Protocol, IP address) and a home Tunnel Endpoint Identifier (TEID) mirrored from an S11 interface of an MME, store the home IP address and the home TEID carried in the CREATE SESSION REQUEST message in an uplink node; if a CREATE SESSION RESPONSE message (CREATE SESSION RESPONSE) carrying a home terminal IP address, a home terminal TEID, an opposite terminal IP address and an opposite terminal TEID mirrored from an S11 interface of the SGW is acquired, searching an uplink node according to the opposite terminal IP address and the opposite terminal TEID, and if the opposite terminal IP address and the opposite terminal TEID are searched, storing the home terminal IP address, the home terminal TEID, the opposite terminal IP address and the opposite terminal TEID carried by the CREATE SESSION RESPONSE message in the downlink node; and at this point, a control plane tunnel corresponding to the UE is established, the subsequent messages of the UE can be searched at an uplink node and a downlink node according to the message direction, the uplink message searches for the downlink node, the downlink message searches for the uplink node, the selected information in the later recorded messages is searched, and if the selected information is not searched, the selected information is not processed.
It can be seen from the above method that an uplink node and a downlink node need to be established to store information of each UE, that is, the information of the same UE needs to be stored in two nodes, and needs to be queried in the two nodes during querying, which increases difficulty in storing information and reduces efficiency of querying information.
Disclosure of Invention
In view of this, the present application provides a message processing method and apparatus based on an S11 interface, so as to solve the problems of increasing difficulty in information storage and reducing efficiency of information query in the related art solutions.
Specifically, the method is realized through the following technical scheme:
a message processing method based on an S11 interface is applied to a network device, wherein the network device is in communication connection with a Mobile Management Entity (MME) and a Serving Gateway (SGW), and the method comprises the following steps:
acquiring messages mirrored from S11 interfaces of the MME and the SGW;
determining the type of the message;
if the type of the message is determined to be a session creation request message, establishing a first node, storing a first home terminal IP address, a first home terminal TEID and first selected information carried by the message in the first node, and hanging the first node in an uplink chain table of a cross chain table;
if the type of the message is determined to be a session establishment response message, searching a second node corresponding to a first opposite-end IP address and a first opposite-end TEID carried by the message in the uplink linked list, if the second node is searched in the uplink linked list, storing a second local-end IP address, a second local-end TEID and second selected information carried by the message in the second node, and hanging the second node in a downlink linked list of the cross linked list.
A message processing device based on an S11 interface is applied to a network device, the network device is in communication connection with an MME and an SGW, and the device comprises:
an obtaining module, configured to obtain a message mirrored from an S11 interface of the MME and the SGW;
a determining module, configured to determine a type of the packet;
the processing module is used for establishing a first node if the type of the message is determined to be a session creation request message, storing a first home terminal IP address, a first home terminal TEID and first selected information carried by the message in the first node, and hanging the first node in an uplink chain table of a cross chain table; if the type of the message is determined to be a session establishment response message, searching a second node corresponding to a first opposite-end IP address and a first opposite-end TEID carried by the message in the uplink linked list, if the second node is searched in the uplink linked list, storing a second local-end IP address, a second local-end TEID and second selected information carried by the message in the second node, and hanging the second node in a downlink linked list of the cross linked list.
According to the technical scheme provided by the application, the information of the UE can be stored by adopting the nodes of the cross chain table, the nodes are firstly established on the uplink chain table based on the information in the session establishing request message, and then the nodes are perfected and hung in the downlink chain table based on the information in the session establishing response message, so that the information of the UE can be stored in the same node, all the information of the UE can be acquired on one node in the corresponding inquiry, and compared with the related technology, the difficulty in storing the information can be reduced, and the efficiency of inquiring the information can be improved.
Drawings
Fig. 1 is a schematic diagram illustrating an architecture of a 4G network in the related art;
fig. 2 is a flowchart of a message processing method based on an S11 interface according to the present application;
fig. 3 is a flowchart of a message processing method based on an S11 interface according to the present application;
fig. 4 is a schematic structural diagram of a message processing apparatus based on an S11 interface according to the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In order to solve the above problem, an embodiment of the present invention provides a message processing method based on an S11 interface, so as to reduce difficulty in information storage and improve efficiency of information query. Referring to fig. 2, fig. 2 is a flowchart of a message processing method based on an S11 interface according to the present application, and the message processing method is applied to a network device, where the network device is in communication connection with an MME and an SGW.
S21: and acquiring messages mirrored from S11 interfaces of the MME and the SGW.
Messages of S11 interfaces of the MME and the SGW may be mirrored to the network device, and the network device may acquire the mirrored messages.
S22: determining the type of the message, and if the type of the message is determined to be a session creation request message, executing S23; if the type of the message is determined to be the create session response message, S24 is executed.
There are many types of messages based on the S11 interface, for example, there may be a create session request message, a create session response message, a modify bearer request message, a modify bearer response message, etc., and only the create session request message and the create session response message trigger the create of a control plane tunnel, so that there is a need to identify these two types of messages.
S23: establishing a first node, storing a first home terminal IP address, a first home terminal TEID and first selected information carried by a message in the first node, and hanging the first node in an uplink linked list of a cross linked list.
After receiving the session establishment request message, it is described that a tunnel is not established for the UE before, that is, a node is not established, so that the node needs to be established first, the node may be defined as a first node, then a home terminal IP address, a home terminal TEID, and selected information carried in the message are stored in the first node, where the home terminal IP address may be defined as a first home terminal IP address, the home terminal TEID may be defined as a first home terminal TEID, and the selected information may be defined as first selected information, and then the first node is hung in an uplink chain table of the cross chain table.
S24: and searching a second node corresponding to the first opposite terminal IP address and the first opposite terminal TEID carried by the message in the uplink linked list, if the second node is searched in the uplink linked list, storing the second home terminal IP address, the second home terminal TEID and the second selected information carried by the message in the second node, and hanging the second node in the downlink linked list of the cross linked list.
After receiving the created session response message, explaining that nodes may have been established in an uplink chain table before, searching for a node corresponding to a first peer-to-peer IP address and a first peer-to-peer TEID carried by the message in the uplink chain table, where the node may be defined as a second node, and if the second node is found in the uplink chain table, explaining that the second node has been established, and storing a second home terminal IP address, a second home terminal TEID and second selected information carried by the message in the second node to obtain a third node of the uplink chain table, thereby perfecting node information, and also storing the third node in a downlink chain table of a cross chain table, thereby keeping the node information in the uplink chain table and the node information in the downlink chain table consistent; and if the second node is not found in the uplink linked list, the processing is not carried out.
The second local terminal TEID and the first peer terminal TEID may identify a tunnel created by the core network for the UE.
According to the technical scheme provided by the application, the information of the UE can be stored by adopting the nodes of the cross chain table, the nodes are firstly established on the uplink chain table based on the information in the session establishing request message, and then the nodes are perfected and hung in the downlink chain table based on the information in the session establishing response message, so that the information of the UE can be stored in the same node, all the information of the UE can be acquired on one node in the corresponding inquiry, and compared with the related technology, the difficulty in storing the information can be reduced, and the efficiency of inquiring the information can be improved.
An optional implementation manner, please refer to fig. 3, where fig. 3 is another message processing method based on an S11 interface, and the method further includes, on the basis of fig. 1:
if it is determined that the packet type is not the create session request packet or the create session response packet, then S25 is executed: the direction of the message is determined.
After the control plane tunnel is established, there are also subsequent signaling messages, such as a modified bearer request message, a modified bearer response message, and the like, and selected information in the signaling messages needs to be recorded in a cross linked list, and the messages can be divided into an uplink message and a downlink message, and the cross linked lists searched based on the two directions are different, so that the direction of the messages needs to be determined first.
S26: and matching the cross chain table according to the direction of the message and the third home terminal IP address, the third home terminal TEID, the second opposite terminal IP address and the second opposite terminal TEID carried by the message.
S27: and if the cross linked list is matched, recording third selected information carried by the message in the cross linked list.
And if the cross chain table is not matched, the message is not processed.
Specifically, the implementation process in S26 specifically includes, according to the direction of the packet and the third home terminal IP address, the third home terminal TEID, the second peer terminal IP address, and the second peer terminal TEID carried by the packet, matching the cross-linked list:
if the direction of the message is determined to be downlink, searching a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a fourth node corresponding to the second opposite terminal TEID carried by the message in an uplink chain table, and if the fourth node is searched in the uplink chain table, matching the uplink chain table;
and if the mode of the message is determined to be the uplink mode, searching a fifth node corresponding to a fourth home terminal IP address, a fourth home terminal TEID, a third opposite terminal IP address and a third opposite terminal TEID carried by the message in a downlink linked list, and if the fifth node is searched in the downlink linked list, matching the uplink linked list and the downlink linked list.
The downlink messages need to be matched with the uplink linked list, the uplink messages need to be matched with the downlink linked list, and specifically, the messages can be searched in the uplink linked list or the downlink linked list for matching.
Specifically, if the cross linked list is matched in S27, the third selected information carried by the message is recorded in the cross linked list, and the implementation process specifically includes:
if the uplink linked list is matched, third selected information carried by the message is obtained, and the third selected information is recorded in a fourth node and a node corresponding to the fourth node in the downlink linked list;
and if the uplink linked list and the downlink linked list are matched, acquiring third selected information carried by the message, and recording the third selected information in the fifth node and a node corresponding to the fifth node in the uplink linked list.
And if the uplink linked list or the downlink linked list is not matched, the message is not processed.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a message processing apparatus based on an S11 interface according to the present application, and is applied to a network device, where the network device is communicatively connected to an MME and an SGW, and the apparatus includes:
an obtaining module 41, configured to obtain a message mirrored from an S11 interface of the MME and the SGW;
a determining module 42, configured to determine a type of the packet;
a processing module 43, configured to establish a first node if it is determined that the type of the packet is a create session request packet, store a first home terminal IP address, a first home terminal TEID, and first selected information carried by the packet in the first node, and hang the first node in an uplink chain table of a cross chain table; and if the type of the message is determined to be the establishment of the session response message, searching a second node corresponding to the first opposite-end IP address and the first opposite-end TEID carried by the message in the uplink linked list, and if the second node is searched in the uplink linked list, storing a second local-end IP address, a second local-end TEID and second selected information carried by the message in the second node, and hanging the second node in a downlink linked list of the cross linked list.
According to the technical scheme provided by the application, the information of the UE can be stored by adopting the nodes of the cross chain table, the nodes are firstly established on the uplink chain table based on the information in the session establishing request message, and then the nodes are perfected and hung in the downlink chain table based on the information in the session establishing response message, so that the information of the UE can be stored in the same node, all the information of the UE can be acquired on one node in the corresponding inquiry, and compared with the related technology, the difficulty in storing the information can be reduced, and the efficiency of inquiring the information can be improved.
Optionally, the processing module 43 is further configured to:
if the message type is determined not to be the session creation request message and the session creation response message, determining the direction of the message;
matching a cross chain table according to the direction of the message and a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a second opposite terminal TEID carried by the message;
and if the cross linked list is matched, recording third selected information carried by the message in the cross linked list.
Specifically, the processing module 43 is configured to match the cross-linked list according to the direction of the packet and the third home terminal IP address, the third home terminal TEID, the second peer terminal IP address, and the second peer terminal TEID carried by the packet, and specifically configured to:
if the direction of the message is determined to be downlink, searching a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a fourth node corresponding to the second opposite terminal TEID carried by the message in an uplink chain table, and if the fourth node is searched in the uplink chain table, matching the uplink chain table;
and if the mode of the message is determined to be the uplink mode, searching a fifth node corresponding to a fourth home terminal IP address, a fourth home terminal TEID, a third opposite terminal IP address and a third opposite terminal TEID carried by the message in a downlink linked list, and if the fifth node is searched in the downlink linked list, matching the uplink linked list and the downlink linked list.
Specifically, the processing module 43 is configured to record, in the cross linked list, third selected information carried by the packet if the cross linked list is matched, and specifically configured to:
if the uplink linked list is matched, third selected information carried by the message is obtained, and the third selected information is recorded in a fourth node and a node corresponding to the fourth node in the downlink linked list;
and if the uplink linked list and the downlink linked list are matched, acquiring third selected information carried by the message, and recording the third selected information in the fifth node and a node corresponding to the fifth node in the uplink linked list.
Optionally, the processing module 43 is further configured to:
and if the second node is not found in the uplink linked list, the processing is not carried out.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (8)
1. A message processing method based on an S11 interface is applied to a network device, wherein the network device is in communication connection with a Mobile Management Entity (MME) and a Serving Gateway (SGW), and the method comprises the following steps:
acquiring messages mirrored from S11 interfaces of the MME and the SGW;
determining the type of the message;
if the type of the message is determined to be a session creation request message, establishing a first node, storing a first home terminal Internet Protocol (IP) address, a first home terminal Tunnel Endpoint Identifier (TEID) and first selected information carried by the message in the first node, and hanging the first node in an uplink chain table of a cross chain table;
if the type of the message is determined to be a session establishment response message, searching a second node corresponding to a first opposite-end IP address and a first opposite-end TEID carried by the message in the uplink linked list, if the second node is searched in the uplink linked list, storing a second local-end IP address, a second local-end TEID and second selected information carried by the message in the second node, and hanging the second node in a downlink linked list of the cross linked list;
the method further comprises the following steps:
if the message type is determined not to be a session creation request message or a session creation response message, determining the direction of the message;
matching the cross chain table according to the direction of the message and a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a second opposite terminal TEID carried by the message;
and if the cross linked list is matched, recording third selected information carried by the message in the cross linked list.
2. The method according to claim 1, wherein matching the cross-linked list according to the direction of the packet and a third local IP address, a third local TEID, a second peer IP address, and a second peer TEID carried by the packet specifically comprises:
if the direction of the message is determined to be downlink, searching a fourth node carried by the message and corresponding to a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a second opposite terminal TEID in the uplink linked list, and if the fourth node is searched in the uplink linked list, matching the uplink linked list;
and if the mode of the message is determined to be the uplink mode, searching a fifth node corresponding to a fourth home terminal IP address, a fourth home terminal TEID, a third opposite terminal IP address and a third opposite terminal TEID carried by the message in the downlink linked list, and if the fifth node is searched in the downlink linked list, matching the fifth node with the uplink linked list.
3. The method according to claim 2, wherein if the cross-linked list is matched, recording third selected information carried by the packet in the cross-linked list, specifically comprising:
if the uplink linked list is matched, third selected information carried by the message is obtained, and the third selected information is recorded in the fourth node and a node corresponding to the fourth node in the downlink linked list;
and if the uplink linked list is matched with the downlink linked list, acquiring third selected information carried by the message, and recording the third selected information in the fifth node and a node corresponding to the fifth node in the uplink linked list.
4. A method according to any of claims 1-3, characterized in that the method comprises:
and if the second node is not found in the uplink linked list, not processing.
5. A message processing device based on an S11 interface is applied to a network device, and the network device is in communication connection with an MME and an SGW, and the device is characterized by comprising:
an obtaining module, configured to obtain a message mirrored from an S11 interface of the MME and the SGW;
a determining module, configured to determine a type of the packet;
the processing module is used for establishing a first node if the type of the message is determined to be a session creation request message, storing a first home terminal IP address, a first home terminal TEID and first selected information carried by the message in the first node, and hanging the first node in an uplink chain table of a cross chain table; if the type of the message is determined to be a session establishment response message, searching a second node corresponding to a first opposite-end IP address and a first opposite-end TEID carried by the message in the uplink linked list, if the second node is searched in the uplink linked list, storing a second local-end IP address, a second local-end TEID and second selected information carried by the message in the second node, and hanging the second node in a downlink linked list of the cross linked list;
the processing module is further configured to:
if the message type is determined not to be a session creation request message or a session creation response message, determining the direction of the message;
matching the cross chain table according to the direction of the message and a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a second opposite terminal TEID carried by the message;
and if the cross linked list is matched, recording third selected information carried by the message in the cross linked list.
6. The apparatus according to claim 5, wherein the processing module is configured to match the cross-linked list according to the direction of the packet and a third local IP address, a third local TEID, a second peer IP address, and a second peer TEID carried by the packet, and is specifically configured to:
if the direction of the message is determined to be downlink, searching a fourth node carried by the message and corresponding to a third home terminal IP address, a third home terminal TEID, a second opposite terminal IP address and a second opposite terminal TEID in the uplink linked list, and if the fourth node is searched in the uplink linked list, matching the uplink linked list;
and if the mode of the message is determined to be the uplink mode, searching a fifth node corresponding to a fourth home terminal IP address, a fourth home terminal TEID, a third opposite terminal IP address and a third opposite terminal TEID carried by the message in the downlink linked list, and if the fifth node is searched in the downlink linked list, matching the fifth node with the uplink linked list.
7. The apparatus according to claim 6, wherein the processing module is configured to, if the cross-linked list is matched with the packet, record third selected information carried by the packet in the cross-linked list, and specifically configured to:
if the uplink linked list is matched, third selected information carried by the message is obtained, and the third selected information is recorded in the fourth node and a node corresponding to the fourth node in the downlink linked list;
and if the uplink linked list is matched with the downlink linked list, acquiring third selected information carried by the message, and recording the third selected information in the fifth node and a node corresponding to the fifth node in the uplink linked list.
8. The apparatus of any of claims 5-7, wherein the processing module is further configured to:
and if the second node is not found in the uplink linked list, not processing.
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