CN108834102B

CN108834102B - Method and system for identifying non-high-speed rail users in LTE high-speed rail private network

Info

Publication number: CN108834102B
Application number: CN201810350081.6A
Authority: CN
Inventors: 袁瑞民; 杨斌
Original assignee: Xi'an Huilong Technology Co ltd
Current assignee: Xi'an Huilong Technology Co ltd
Priority date: 2018-04-18
Filing date: 2018-04-18
Publication date: 2020-11-13
Anticipated expiration: 2038-04-18
Also published as: CN108834102A

Abstract

The invention discloses a method and a system for identifying non-high-speed rail users in an LTE high-speed rail private network, which comprise the following steps: a user terminal requests RRC connection to a base station of a high-speed rail private network; RRC connection is established, the base station distributes a C-RNTI for the user terminal, and a timer is started to start timing; collecting a generated signaling message of a Uu port, wherein the signaling message comprises time, C-RNTI and an interface message type; and judging whether the C-RNTI exists when the timing time of the timer reaches the preset time, if so, judging that the user terminal is a non-high-speed rail user, and otherwise, not needing processing. The method is applied to the LTE high-speed rail private network and used for identifying the non-high-speed rail users in the high-speed rail private network so as to move the non-high-speed rail users out of the high-speed rail private network, and judging whether the user is a high-speed rail user or not by monitoring the existence time of the C-RNTI, so that the judgment of the high-speed rail users can be independently realized in the LTE base station, and information interaction with a core network is not needed.

Description

Method and system for identifying non-high-speed rail users in LTE high-speed rail private network

Technical Field

The invention relates to the technical field of user identification, in particular to a method and a system for identifying non-high-speed rail users in an LTE (long term evolution of the general mobile communication technology) high-speed rail private network.

Background

In order to ensure the communication quality of mobile users on high-speed rails, mobile operators build high-speed rail private networks along the high-speed rails. The high-speed rail private network generally adopts an RRU (radio remote unit) common cell technology and covers a high-speed rail line in a chain type. Structurally, several high-speed rail private network cells are controlled by one eNodeB (base station), and one high-speed rail private network consists of several enodebs. The high-speed rail private network is in principle only provided to passengers on high-speed rails. And the network covering the area outside the high-speed rail is called a public network, and the communication of the non-high-speed rail users is completed.

Due to the characteristics of wireless signals, the areas of the public network and the high-speed rail private network are often overlapped, so that public network users may occupy the area under the high-speed rail private network, the load of the high-speed rail private network is increased, and the perception of high-speed rail passengers using the wireless network is influenced. Therefore, it is necessary to migrate non-high-speed rail users in the high-speed rail private network to the public network. There is therefore a need for a user identification technique or method that identifies non-high-speed rail users in a high-speed rail private network.

In the existing user identification technology, a system and a device (in an example, a BSC) need to be established at the upper level of a base station, and the device acquires a first identifier and a first time of a first cell when a terminal performs first service interaction in a high-speed rail private network, and a second identifier and a second time of a cell where the terminal is located when performing current service interaction, by using a time of a "successful establishment of uplink and downlink Temporary Block (TBF)" or a "CLRCMD" signaling as a time identifier. And when the first identifier is the same as the second identifier, the difference between the second time and the first time is used as the residence time of the terminal in the first cell of the private network. And when the residence time is greater than or equal to the preset time, determining that the user of the terminal is a public network user.

The prior art has the following disadvantages:

1) the existing scheme needs to be deployed at the upper layer of a high-speed rail private network base station, needs to realize signaling interaction with a core network, and needs to monitor a plurality of base stations or cells in the high-speed rail private network simultaneously. In fact, the user performs service interaction by first passing through the cell and the base station, so that it is simplest and most straightforward to perform calculation and judgment at the base station side.

2) The existing scheme is suitable for analyzing users who generate two or more services within a certain time, and does not work for the users who are always in a connected state within the certain time. Meanwhile, the scheme does not identify the switching command, and the situation that the service is not finished but the switching is generated cannot be judged.

Therefore, there is a need for a method that can be simply applied to the base station side without monitoring information of the interface with the core network, measuring user speed, or cell sequence, and can determine whether the user is a high-speed rail user by monitoring information of the Uu interface.

Disclosure of Invention

The invention provides a method and a system for identifying non-high-speed rail users in an LTE (long term evolution) high-speed rail private network, which aim at the problems and the defects in the prior art, are applied to base station equipment of the LTE high-speed rail private network, monitor the duration of C-RNTI (radio network temporary identity) by taking each base station as a unit, and judge whether the users are high-speed rail users so as to move the non-high-speed rail users out of the high-speed rail private network.

The invention solves the technical problems through the following technical scheme:

the invention provides a method for identifying non-high-speed rail users in an LTE (Long term evolution) high-speed rail private network, which is characterized by comprising the following steps of:

s1, the user terminal requests RRC connection to the base station of the LTE high-speed rail private network;

s2, RRC connection is established, the base station distributes a C-RNTI for the user terminal, and a timer corresponding to the base station is started to start timing;

s3, collecting generated signaling messages of the Uu port, wherein the signaling messages comprise time, C-RNTI and interface message types, and the interface message types are RRC connection establishment messages, downlink message transmission, RRC connection release messages or RRC connection reset messages;

s4, judging whether the C-RNTI exists when the timing time of the timer reaches the preset time, if so, entering the step S5, otherwise, entering the step S6;

s5, judging that the user terminal is a non-high-speed rail user, and migrating the non-high-speed rail user to a public network;

and S6, no processing is needed.

s4, judging whether the RRC connection release message or the RRC connection reset message is received and the C-RNTI is released before the timing time of the timer reaches the preset time or when the timing time of the timer reaches the preset time, if not, entering the step S5, and if not, entering the step S6;

and S6, no processing is needed.

The invention provides a system for identifying non-high-speed rail users in an LTE (Long term evolution) high-speed rail private network, which is characterized by comprising a plurality of base stations with timers, a request connection module, an allocation starting module, an acquisition module and a judgment module;

the connection request module is used for the user terminal to request RRC connection from the base station;

the allocation starting module is used for establishing RRC connection, the base station allocates a C-RNTI for the user terminal, and simultaneously starts a timer corresponding to the base station to start timing;

the acquisition module is used for acquiring a generated signaling message of the Uu port, wherein the signaling message comprises time, a C-RNTI and an interface message type, and the interface message type is an RRC connection establishment message, a downlink message transmission, an RRC connection release message or an RRC connection reset message;

the judging module is used for judging whether the C-RNTI exists when the timing time of the timer reaches the preset time, judging that the user terminal is a non-high-speed rail user if the C-RNTI exists, and migrating the non-high-speed rail user to the public network, otherwise, the non-high-speed rail user does not need to be processed.

the judging module is used for judging whether an RRC connection release message or an RRC connection reset message is received and C-RNTI is released before the timing time of the timer reaches the preset time or when the timing time of the timer reaches the preset time, judging that the user terminal is a non-high-speed rail user if the user terminal is not the high-speed rail user, and transferring the non-high-speed rail user to a public network, otherwise, the user terminal does not need to be processed.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

the method and the device are applied to the LTE high-speed rail private network and used for identifying the non-high-speed rail users in the high-speed rail private network so as to move the non-high-speed rail users out of the high-speed rail private network. The method judges whether the user is a high-speed rail user or not by monitoring the existence time of the C-RNTI, so that the judgment of the high-speed rail user can be independently realized in an LTE base station and a cell, the method is simple and easy to implement, the judgment can be independently realized by the base station without depending on a core network, and the structure is greatly simplified.

Drawings

Fig. 1 is a flowchart of a method for identifying non-high-speed rail users in an LTE high-speed rail private network according to embodiment 1 of the present invention.

Fig. 2 is a block diagram of a structure of a system for identifying non-high-speed rail users in an LTE high-speed rail private network according to embodiment 1 of the present invention.

Fig. 3 is a schematic diagram of three consecutive cells and a public network cell in an LTE high-speed private network according to embodiment 1 of the present invention.

Fig. 4 is a flowchart of a method for identifying non-high-speed users in an LTE high-speed private network according to embodiment 2 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment provides a method for identifying non-high-speed users in an LTE high-speed private network, which includes the following steps:

step 101, a user terminal requests RRC connection to a base station of an LTE high-speed rail private network.

And step 102, RRC connection establishment, wherein the base station allocates a C-RNTI for the user terminal, and starts a timer corresponding to the base station to start timing.

And 103, collecting the generated signaling message of the Uu port, wherein the signaling message comprises time, C-RNTI and interface message types, and the interface message types are RRC connection establishment message, downlink message transmission, RRC connection release message or RRC connection reset message and are stored by taking the C-RNTI as a unit. See table below:

time of acquisition	Standard interface message type	CRNTI
			2017-10-25 14:46:35(672)	RRC_CONN_RECFG_CMP	61920
2017-10-25 14:46:35(677)	RRC_CONN_RECFG	61920
			2017-10-25 14:46:35(713)	RRC_CONN_RECFG_CMP	61920
2017-10-25 14:46:35(714)	RRC_UL_INFO_TRANSF	61920
			2017-10-25 14:46:36(295)	RRC_DL_INFO_TRANSF	61920
2017-10-25 14:46:36(301)	RRC_CONN_RECFG_CMP	61920
			2017-10-25 14:46:49(609)	RRC_MEAS_RPRT	61920
2017-10-25 14:46:52(485)	RRC_CONN_REL	61920

Step 104, judging whether the C-RNTI exists when the timing time of the timer reaches the preset time, if so, entering step 105, and if not, entering step 106;

step 105, judging that the user terminal is a non-high-speed rail user, and migrating the non-high-speed rail user to a public network;

step 106, no processing is required.

As shown in fig. 2, the present embodiment provides a system for identifying non-high-speed rail users in an LTE high-speed rail private network, which includes a plurality of base stations 1 including a timer, a connection request module 2, an allocation starting module 3, an acquisition module 4, and a determination module 5.

The connection request module 2 is used for the user terminal to request RRC connection to the base station 1;

the allocation starting module 3 is used for establishing RRC connection, the base station 1 allocates a C-RNTI for the user terminal, and simultaneously starts a timer corresponding to the base station 1 to start timing;

the acquisition module 4 is configured to acquire a generated signaling message of the Uu port, where the signaling message includes time, C-RNTI and an interface message type, and the interface message type is an RRC connection setup message, a downlink message transmission, an RRC connection release message, or an RRC connection reset message;

the judging module 5 is configured to judge whether the C-RNTI exists when the timing time of the timer reaches a preset time, judge that the user terminal is a non-high-speed rail user if the C-RNTI exists, migrate the non-high-speed rail user to the public network, and otherwise, do not need to process the non-high-speed rail user.

In this embodiment, the timer is started every time a new C-RNTI is generated. When the timer reaches the preset time, if the C-RNTI still exists at the time, the user is still resident in a cell of a high-speed rail private network within a certain time, the user is judged to be a non-high-speed rail user, the non-high-speed rail user is transferred to a public network, and the timer stops. When the timer reaches the preset time, if the C-RNTI is released, the user does not occupy the high-speed rail private network resources (the resources are released or the C-RNTI is switched to other base stations) any more, the processing is not needed, and meanwhile, the timer stops.

Since the coverage area of each base station or cell in the private network for high-speed rail is basically determined, the time for high-speed rail to pass through the area is also determined. The RRC connection and C-RNTI are generated whether the user establishes a connection under the base station or cell or switches from a neighbor cell to the cell. Normal high-speed rail users must leave the coverage area of the cell before the preset time is reached. Therefore, the embodiment realizes the judgment by establishing a timer, and is very simple and easy to implement. Meanwhile, the embodiment is only required to be deployed on a single base station, and is not required to be matched with other equipment, so that the implementation mode is very simple and easy.

In order to make the technical solution of the present invention better understood by those skilled in the art, the following description is given by way of a specific example:

in fig. 3, 460-00-141051-1 and 460-00-1410152-1, 460-00-1410153-1 are three continuous cells in the private high-speed rail network, and the areas outside the three continuous cells are public network cells. Wherein the coverage distance of 460-00-141052-1 is 4 kilometers. It is calculated that a train with a speed of 200 km/h takes 72 seconds to traverse the cell. To ensure accuracy, some redundancy is added, and a timer is set to 90 seconds. When a user performs a service in the 460-00-141052-1 cell, an RRC connection setup message is generated and a C-RNTI is generated, and a timer is started at this time. And after 90 seconds, reaching the preset time, judging that the user is a non-high-speed rail user if the C-RNTI is not released, starting a migration function, and migrating the user to the public network.

Example 2

As shown in fig. 4, the present embodiment provides a method for identifying non-high-speed users in an LTE high-speed private network, which includes the following steps:

step 301, a user terminal requests RRC connection to a base station of an LTE high-speed rail private network;

step 302, RRC connection is established, the base station distributes a C-RNTI for the user terminal, and simultaneously, a timer corresponding to the base station is started to start timing;

step 303, collecting a generated signaling message of the Uu port, wherein the signaling message comprises time, a C-RNTI and an interface message type, and the interface message type is an RRC connection establishment message, a downlink message transmission, an RRC connection release message or an RRC connection reset message;

step 304, determining whether an RRC connection release message or an RRC connection reset message is received and a C-RNTI is released before the timing time of the timer reaches a preset time or when the timing time of the timer reaches the preset time, if not, entering step 305, and if not, entering step 306;

step 305, determining that the user terminal is a non-high-speed rail user, and migrating the non-high-speed rail user to a public network;

step 306, no processing is required.

The embodiment provides a system for identifying non-high-speed rail users in an LTE (long term evolution) high-speed rail private network, which comprises a plurality of base stations 1 with timers, a connection request module 2, an allocation starting module 3, an acquisition module 4 and a judgment module 5.

the judging module 5 is configured to judge whether an RRC connection release message or an RRC connection reset message is received and release the C-RNTI before the timing time of the timer reaches the preset time or when the timing time of the timer reaches the preset time, and judge that the user terminal is a non-high-speed rail user if the timing time of the timer does not reach the preset time, and migrate the non-high-speed rail user to the public network, otherwise, do not need to process the non-high-speed rail user.

In this embodiment, since the C-RNTI is associated with RRC connection establishment, the RRC connection establishment can also be used as an identifier. When the RRC connection setup signaling is generated, a timer is started. And when the preset time is reached, if the C-RNTI is released without receiving the RRC connection release or RRC connection reset message, the time of the user in one cell is long enough, the user is judged to be a non-high-speed rail user, and the timer is stopped. If the RRC connection release or RRC connection reset message is received before the preset time is reached and the C-RNTI is released, the user is indicated to finish the service or switch out of the cell, the network load is not influenced any more, the processing is not needed, and the timer is stopped.

In a mobile network, traffic generated by a user terminal first passes through a base station device (eNodeB), and therefore, it is the easiest and easiest way to deploy an identification method on a base station. Meanwhile, the judgment can be independently realized by the eNodeB without depending on a core network, and the structure is greatly simplified.

The invention has the following technical advantages:

1. the method is different. Only the signaling message of the UU port of the base station needs to be monitored. Service interaction without other interfaces (such as a core network) is required.

2. The data sources are different. The scheme only needs Uu port information between the Ue and the EnodeB. Whereas the existing approach requires a-interface information between the BSC and the core network.

3. The application range is different. The existing scheme is suitable for analyzing users who generate two or more services within a certain time, and does not work for the users who are always in a connected state within the certain time; the scheme is suitable for analyzing the users in the connection state all the time within a certain time.

4. The structure is simple. The scheme only needs to be deployed on a single EnodeB device of the high-speed rail private network.

5. The realization is simple. The cell sequence of the high-speed rail private network is not required to be set, and the relation and the distance between private network cells are not required to be known.

6. The algorithms are different. And only detecting the duration of the C-RNTI, wherein the duration is greater than or equal to the preset duration, and determining the non-public network user. No further calculations are required.

7. The method is suitable for the network structure without the BSC equipment, such as 4G (LTE).

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A method for identifying non-high-speed rail users in an LTE high-speed rail private network is characterized by comprising the following steps:

s3, collecting the generated signaling message of the Uu port, wherein the signaling message comprises time, C-RNTI and interface message types, and the interface message types comprise RRC connection establishment message, downlink message transmission, RRC connection release message or RRC connection reset message;

and S6, no processing is needed.

2. A method for identifying non-high-speed rail users in an LTE high-speed rail private network is characterized by comprising the following steps:

s4, judging whether the RRC connection release message or the RRC connection reset message is received and the C-RNTI is released before the timing time of the timer reaches the preset time or when the timing time of the timer reaches the preset time, if not, entering the step S5, and if so, entering the step S6;

and S6, no processing is needed.

3. A system for identifying non-high-speed rail users in an LTE high-speed rail private network is characterized by comprising a plurality of base stations with timers, a request connection module, an allocation starting module, an acquisition module and a judgment module;

4. A system for identifying non-high-speed rail users in an LTE high-speed rail private network is characterized by comprising a plurality of base stations with timers, a request connection module, an allocation starting module, an acquisition module and a judgment module;