CN111245826A - 5G signaling analysis method and system - Google Patents
5G signaling analysis method and system Download PDFInfo
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- CN111245826A CN111245826A CN202010022706.3A CN202010022706A CN111245826A CN 111245826 A CN111245826 A CN 111245826A CN 202010022706 A CN202010022706 A CN 202010022706A CN 111245826 A CN111245826 A CN 111245826A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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Abstract
The invention relates to a 5G signaling analysis method and a system, belonging to the field of communication network signaling monitoring. The method comprises the following steps: sorting the Key signaling messages Key by using a large top heap according to the Value occurrence probability; mapping the Key to a Hash table, determining the position of the Key in a linked list when the conflict is processed according to the probability, and placing the Key value with higher probability at the position with lower conflict in the Hash table; and accessing the records of the hash table, and associating and synthesizing the same signaling flow information of the same user. The invention improves the efficiency of processing hash conflict in the synthesis of the signaling and the multi-protocol association, realizes the accurate monitoring function of the signaling in the signaling analysis system, and solves the accurate positioning of the communication network user and the corresponding signaling analysis file.
Description
Technical Field
The invention belongs to the field of communication network signaling monitoring, and relates to a 5G signaling analysis method and a system.
Background
With the rapid development of wireless communication technology, the peak theoretical transmission speed from the first generation mobile communication network (1G) to the fifth generation communication network (5G) can reach 1GB every 8 seconds, which is hundreds of times faster than that of the 4G network, meaning that one 1GB movie can be downloaded within 8 seconds. The 5G network not only serves wireless communication between people, but also solves the contact between objects and between people, and finally realizes the real 'universal interconnection'.
However, in order to realize the functions of the 5G network, not only high-speed network transmission is required, but also the terminal user needs to be constantly and stably in a networking state, so the 5G still faces challenges brought by differentiated performance indexes in diversified application scenarios. In the 5G network, in order to improve the communication quality of a wireless communication network system, the wireless communication network is optimized through the analysis work of signaling, and the service quality of a user is improved. The signaling analysis technology is a core technology of a signaling analysis system, obtains a specific position of a problem through analyzing a signaling flow, solves the problem in communication by using data characteristics, and is of great importance in the field of signaling monitoring of a communication network. The performance of the system determines the completeness and accuracy of 5G signaling analysis system data, and provides an accurate and reliable monitoring function. Therefore, a 5G signaling analysis scheme is needed for engineering applications.
Disclosure of Invention
In view of this, the present invention provides a 5G signaling analysis method and system, which analyze collected signaling data and use a signaling analysis method that combines a chain address method and a hash large top heap to process hash collision in the signaling analysis process, so as to improve the efficiency of processing hash collision in the synthesis of signaling and multi-protocol association, and implement a signaling accurate monitoring function in a signaling analysis system.
In order to achieve the purpose, the invention provides the following technical scheme:
A5G signaling analysis method specifically comprises the following steps:
s1: the signaling analysis system collects real-time data from the antenna through the baseband board, stores the data as local In-phase Quadrature (IQ) data, and transmits the data of L1 to the L2 board. The IQ data includes hardware characteristic information such as antenna gain, RB resource, channel modulation quality, and the like, in addition to information of interaction between the base station and the client.
S2: the L2 board stores the L1 data, prepares for decryption decoding, and outputs the L2 data to the L3 board after the analysis of the MAC protocol, the RLC protocol, and the PDCP protocol is completed;
s3: the L3 board stores L2 data, completes the decoding and synthesis of RRC and NAS layers, and performs signaling analysis on IP and application user name protocols;
s4: in the process of analyzing the signaling key message, a method of combining a chain address method and a Hash large top heap is used for processing Hash collision;
s5: the analysis results are associated with a plurality of protocols according to the key value of the signaling message, and an External Data Representation (XDR) is synthesized and stored in a database.
Further, protocol analysis in the signaling analysis comprises L2 layer protocol analysis and L3 layer protocol analysis; the protocol analysis of the L2 layer is to analyze an upper layer encryption protocol into a plaintext, and comprises an MAC sublayer, an RLC sublayer, a PDCP sublayer and the like; the protocol analysis of the L3 layer includes NAS and RRC.
Further, in step S3, the hash signaling analysis is to map a Key information Key value of a signaling into a hash table in the process of synthesizing the signaling and associating multiple protocols, and specifically includes: and searching a corresponding signaling flow in the hash table by using the Key value of the signaling message through a hash algorithm to complete the correlation of the related signaling flow.
Further, in step S4, the hash collision means that Key values with the same hash address will collide during the association and synthesis process of the integrated signaling message.
Further, the step S4 specifically includes:
s41: in the signaling synthesis association process, when a hash function is constructed, a dynamic Identifier (C-RNTI) of a user is used as a Key value, a hash table is constructed according to the hash function, and the Key value is mapped to the hash table;
s42: sorting Key message Key values of the signaling from large to small according to the probability of occurrence of Value values corresponding to the Key message Key values by using a large top heap sorting method;
s43: determining the position of a Key value in a linked list when a conflict is processed according to the occurrence probability of a Vlaue value corresponding to a Key value of a signaling Key message, placing the Key value with higher probability at the position with smaller conflict in a Hash table, and placing the Key value with lower probability at the position with larger conflict in the Hash table;
s44: and processing the conflict in the hash table by using a chain address method, accessing records in the hash table, searching the corresponding signaling flow message in the hash table through the Key information Key value of the message, and judging whether the message exists.
Further, in step S42, the big top heap sorting is to sort Key values of signaling messages based on a hash table chain address method in the process of establishing a hash table through signaling analysis.
Further, in step S44, the chain address method processes the hash collision by searching Value in the hash table according to the hash Key Value to obtain the address of the hash table entry pointing to the linked list where the collision exists.
Further, in step S5, the integrated signaling flow XDR refers to the combination of related messages in the same signaling flow of the same user to form a complete signaling flow.
Further, in step S5, when the signaling flow information is associated and synthesized into an XDR, a source IP, a source port number, a destination IP, and a destination port number are selected as Key values to construct a hash function. The Hash function adopts a Hash index mode, and the index value adopts a specific key value.
Further, in step S1, the baseband board of the signaling analysis system mainly consists of 11 radio frequency baseband boards; in the baseband board, 5 blocks collect uplink data, 5 blocks collect downlink data, and 1 block carries out cell scanning; the clamping grooves are used for collecting downlink data of baseband boards with odd numbers, and the clamping grooves are used for collecting uplink data of baseband boards with even numbers.
The system comprises a signaling acquisition module, a signaling decoding synthesis module, a signaling analysis module and a signaling back-check module; the signaling acquisition module: acquiring signaling data of a wireless port user by using an acquisition card to realize acquisition of original signaling data; the signaling decoding synthesis module: decoding and synthesizing the L2 data stored in the signaling acquisition module respectively; the signaling analysis module: combining related messages in the same signaling flow of the same user to form a complete signaling flow; the signaling reverse checking module: and the user checks the synthesized signaling flow after the multi-protocol association through signaling reverse check.
The invention has the beneficial effects that: the invention overcomes the defects that the error rate of positioning the communication user and the corresponding signaling analysis file is larger in the process of analyzing the 5G network signaling in the prior art, and realizes the signaling accurate monitoring function in the signaling analysis system by improving the efficiency of processing the hash conflict in the signaling synthesis and multi-protocol association.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
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For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a flowchart of a 5G signaling analysis method according to the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a flowchart of a 5G signaling analysis method, which specifically includes the following steps:
s1: initializing a synthesis module for signaling analysis, and acquiring a Key Key value of a decoding data signaling message;
s2: in the process of signaling synthesis association, when a hash function is constructed, the dynamic identity C-RNTI of a user is used as a Key value, a hash table is constructed according to the hash function, and the Key value is mapped to the hash table. The dynamic identity C-RNTI refers to a dynamic identity which is allocated to the UE by the base station, and uniquely identifies the UE under a cell gap.
S3: sorting Key message Key values of the signaling from large to small according to the probability of occurrence of Value values corresponding to the Key message Key values by using a large top heap sorting method;
s4: determining the position of a Key value in a linked list when a conflict is processed according to the occurrence probability of a Vlaue value corresponding to a Key value of a signaling Key message, placing the Key value with higher probability at the position with lower conflict in a Hash table, and placing the Key value with lower probability at the position with higher conflict in the Hash table;
s5: processing conflicts in a hash table by using a chain address method, accessing records in the hash table, searching corresponding signaling flow messages in the hash table through Key information Key values of the messages, and judging whether the messages exist or not;
s6: if the signaling flow information corresponding to the Key signaling information Key value exists, updating the statistical information, and associating and synthesizing the same signaling flow information of the same user; if not, a new XDR is created.
The embodiment is implemented by a 5G signaling analysis system, which includes the following modules:
(1) signaling acquisition module
The signaling acquisition module mainly has the functions of acquiring signaling data of a wireless port user by using an acquisition card and realizing the acquisition of original signaling data;
(2) signaling decoding synthesis module
The signaling decoding and synthesizing module is mainly used for decoding and synthesizing the L2 data stored in the slave signaling acquisition module respectively to generate L3 data and transmitting the L3 data to the signaling analysis module;
(3) signaling analysis module
The signaling analysis module carries out matching association on the data of L3 generated by decoding, combines the associated messages in the same signaling flow of the same user together to form a complete signaling flow, and generates a signaling comprehensive XDR;
(4) signaling reverse checking module
The signaling reverse check module is used for requesting message statistical information from the server when the client side needs to check the result, the statistical information is returned to the client side, and the user can check the synthesized signaling flow after the multi-protocol association through the signaling reverse check.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A5G signaling analysis method is characterized by comprising the following steps:
s1: the signaling analysis system collects real-time data from an antenna through a baseband board, stores the real-time data as local In-phase quadrature (IQ) data, and sends the data of a Layer one (Layer 1, L1) to a Layer two (Layer 2, L2) board;
s2: the L2 board stores L1 data, prepares for decryption decoding, and outputs L2 data to a Layer three (Layer 3, L3) board after analyzing the completion of the MAC protocol, RLC protocol, and PDCP protocol;
s3: the L3 board stores L2 data, completes the decoding and synthesis of RRC and NAS layers, and performs signaling analysis on IP and application user name protocols;
s4: in the process of analyzing the signaling key message, a method of combining a chain address method and a Hash large top heap is used for processing Hash collision;
s5: the analysis results are associated with a plurality of protocols according to the key value of the signaling message, and an external data Representation (XDR) is synthesized and stored in a database.
2. The method of claim 1, wherein the protocol resolution in the signaling analysis includes L2 layer protocol resolution and L3 layer protocol resolution; the protocol analysis of the L2 layer is that the upper layer encryption protocol is analyzed into a plaintext and comprises an MAC sublayer, an RLC sublayer and a PDCP sublayer; the L3 layer protocol resolution includes NAS and RRC.
3. The 5G signaling analysis method according to claim 1, wherein in step S3, the hash signaling analysis is to map a Key information Key value of a signaling into a hash table in a process of synthesizing the signaling and associating multiple protocols, and specifically includes: and searching a corresponding signaling flow in the hash table by using the Key value of the signaling message through a hash algorithm to complete the correlation of the related signaling flow.
4. The 5G signaling analysis method according to claim 1, wherein in step S4, the hash collision means that Key values with the same hash address will collide during the association and synthesis process of the integrated signaling message.
5. The 5G signaling analysis method according to claim 1, wherein the step S4 specifically comprises:
s41: in the signaling synthesis association process, a dynamic identity (C-RNTI) of a user is used as a Key value when a hash function is constructed, a hash table is constructed according to the hash function, and the Key value is mapped to the hash table;
s42: sorting Key message Key values of the signaling from large to small according to the probability of occurrence of Value values corresponding to the Key message Key values by using a large top heap sorting method;
s43: determining the position of a Key value in a linked list when a conflict is processed according to the occurrence probability of a Vlaue value corresponding to a Key value of a signaling Key message, placing the Key value with higher probability at the position with smaller conflict in a Hash table, and placing the Key value with lower probability at the position with larger conflict in the Hash table;
s44: and processing the conflict in the hash table by using a chain address method, accessing records in the hash table, searching the corresponding signaling flow message in the hash table through the Key information Key value of the message, and judging whether the message exists.
6. The 5G signaling analysis method according to claim 5, wherein in step S42, the big top heap sorting is to sort Key values of signaling messages based on a hash table link address method in the process of establishing a hash table in signaling analysis.
7. The 5G signaling analysis method according to claim 5, wherein in step S44, the chain address method processes hash collision by looking up Value in the hash table according to the hash Key Value to obtain the address of the hash table entry pointing to the linked list where there is a collision.
8. The 5G signaling analysis method according to claim 1, wherein in step S5, the integrated signaling flow XDR refers to the combination of related messages in the same signaling flow of the same user to form a complete signaling flow.
9. The 5G signaling analysis method according to claim 1, wherein in step S5, when the signaling flow information is synthesized into XDR in a correlated manner, the source IP, the source port number, the destination IP, and the destination port number are selected as Key values to construct a hash function.
10. The 5G signaling analysis method according to claim 1, wherein in step S1, the signaling analysis system comprises a signaling collection module, a signaling decoding synthesis module, a signaling analysis module and a signaling back-check module;
the signaling acquisition module: acquiring signaling data of a wireless port user by using an acquisition card to realize acquisition of original signaling data;
the signaling decoding synthesis module: decoding and synthesizing the L2 data stored in the signaling acquisition module respectively;
the signaling analysis module: combining related messages in the same signaling flow of the same user to form a complete signaling flow;
the signaling reverse checking module: and the user checks the synthesized signaling flow after the multi-protocol association through signaling reverse check.
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Application publication date: 20200605 |