WO2012016444A1

WO2012016444A1 - Method and base station for failsoft processing based on digital trunked system

Info

Publication number: WO2012016444A1
Application number: PCT/CN2011/072212
Authority: WO
Inventors: 樊荣
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-08-03
Filing date: 2011-03-28
Publication date: 2012-02-09
Also published as: CN102348222B; CN102348222A; JP2013537757A

Abstract

A method for failsoft processing based on a digital trunked system is disclosed in the present invention. The method includes that: when detecting that a source core network connected with a source base station has a failure, the source base station, via a target base station adjacent to the source base station, sends a request message to a target core network connected with the target base station, and the target core network establishes a communication channel for the source base station according to the request message (S101); an acknowledgement message is returned from the target core network via the target base station (S102); data of a source terminal user is transmitted to the target core network via the target base station, and the target core network handles the data of the source terminal user (S103); the handled data information returned from the target core network via the target base station is received, and the handled data information is sent to a target terminal group (S104). A base station for failsoft processing based on a digital cluster system is simultaneously disclosed in the present invention. The present invention farthest attenuates the influence of a core network failure on a trunked communication system, and ensures normal communications of trunked users in a failure network area.

Description

Method and base station for fault weakening processing based on digital cluster system

The present invention relates to a fault weakening processing technology in a digital trunking system, and more particularly to a method and a base station for fault weakening processing based on a digital trunking system in a Long Term Evolution (LTE) system. Background technique

At present, the trunking communication system is developed to meet the needs of industry users' command and dispatch, etc. It is a dedicated wireless communication system for specific industry applications. The main feature of the trunking communication system different from the public radio mobile communication system is that, in addition to providing the two-way calling function of the mobile phone, it can also provide group (group) calls, full calls, and even set the call priority level in the system, and can perform Priority call, emergency call, etc., which are not available in general mobile phones; special functions such as dynamic reorganization and virtual private network in the system can also be provided. These features are particularly suitable for police, national security department-specific communications, and command and dispatch needs for airports, customs, public transport, disaster relief, etc. Therefore, trunked communication systems in government departments, public safety, emergency telecommunications, electricity, civil aviation, petrochemical, military and It has a wide range of applications in enterprises and other fields. It is a versatile and efficient wireless communication system, and has formed a dedicated communication network outside the public mobile communication network around the world.

In a trunked communication system, a large number of wireless users can share a small number of wireless channels, thereby saving valuable wireless resources and high channel utilization.

The trunking communication system mainly uses half-duplex communication, and controls the acquisition and release of channels through the Push To Talk button during work. The broadband trunking communication system in the trunking communication system mainly expands the broadband service types around the three basic service modes of "voice", "data" and "video", and the high bandwidth of the LTE system is more conducive to the realization of the above services and their extended services. In the prior art, the trunking communication system is mainly composed of a terminal, a wireless broadband access system, and a network subsystem (network side), and the terminal mainly includes a handheld terminal, an in-vehicle terminal, a fixed station, a wireless dispatching station, and a wired dispatching station; The broadband access system is mainly composed of base stations; the network subsystem is mainly composed of a core network. Similar to other wireless communication systems, the communication methods in the trunking communication system are all communicated through coordination between the above network elements. Since the trunking communication system is mostly used for military, public security, and emergency situations, the wireless broadband access system is required to have higher fault-tolerant processing capability and redundant backup capability, ensuring that when the network side (core network) fails. Cluster users should still be able to communicate, minimizing the impact of network-side failures and minimizing the risk of network failures.

However, in the prior art trunking communication system, when a network side fails, the impact of the network side failure cannot be well weakened. Summary of the invention

The main purpose of the present invention is to provide a method and base station for fault weakening processing based on a digital trunking system, which aims to minimize the impact of the core network fault on the trunking communication system when the core network fails, and ensure that the communication function is normal. .

The present invention provides a method for fault weakening processing based on a digital trunking system, including: when a source base station detects that a source core network connected thereto is faulty, the source base station transmits a target core connected to the target base station through a target base station adjacent thereto The network sends a request message, and the target core network establishes a communication channel for the source base station according to the request message;

Receiving, by the target base station, an acknowledgement message returned by the target core network;

The source end user data is transmitted to the target core network through the target base station, and the source end user data is processed by the target core network;

Receiving the processed data information returned by the target core network through the target base station, and transmitting the processed data information to the target terminal group.

Preferably, the request message includes: fault identifier information, a source base station identifier, and/or a first transparent The first transparent container includes: a cluster group identity identifier, a cluster group temporary identity identifier, a cluster group and a terminal group security and authentication information, a terminal access bearer information, and a terminal context information. And/or the service carries user plane data transmission information.

Preferably, the confirmation message includes: fault identification information, a source base station identifier, and/or a second transparent container; wherein the second transparent container comprises: a cluster group identity identifier, a cluster group temporary identity identifier, and/or a service Carry user plane data transmission information.

Preferably, when the source base station detects that the source core network connected to it is faulty, the source base station sends a request message to the target core network connected to the target base station by using the target base station adjacent thereto, and the target core network according to the request message is The step of establishing a communication channel by the source base station further includes:

After the source base station detects that the core network connected to it is faulty and receives the user data sent by the source terminal, the source base station sends a request message to the target core network connected to the target base station through the target base station adjacent thereto, by the target core network. Establishing a communication channel for the source base station according to the request message.

Preferably, the source base station is a source macro wireless broadband access base station, a source micro wireless broadband access base station or a source eNodeB.

The present invention provides a base station for fault weakening processing based on a digital trunking system, including: a sending module, configured to: when detecting a fault of a source core network connected to the base station, by using a target base station adjacent to the base station, The target core network connected to the target base station sends a request message, and the target core network establishes a communication channel for the source base station according to the request message;

a receiving module, configured to receive, by the target base station, an acknowledgement message returned by the target core network, where the data transmission module is configured to transmit the source terminal user data to the target core network by using the target base station, and process the source terminal user data by the target core network;

The receiving and sending module is configured to receive processed data information returned by the target core network by the target base station, and send the processed data information to the target terminal group. Preferably, the request message includes: fault identifier information, a source base station identifier, and/or a first transparent container; wherein, the first transparent container includes: a cluster group identity identifier, a cluster group temporary identity identifier, and a cluster group And terminal security and authentication information, terminal access bearer information, terminal context information, and/or service bearer user plane data transmission information in the cluster group.

Preferably, the sending module is further configured to: when the source base station detects that the source core network connected thereto is faulty, and receives the user data sent by the source terminal, the source base station connects to the target base station by using the target base station adjacent thereto. The target core network sends a request message, and the target core network establishes a communication channel for the source base station according to the request message.

The present invention provides a method and a base station for fault weakening processing based on a digital trunking system. When a source base station detects that a source core network connected to it is faulty, the target core network connected to the adjacent target base station of the source base station provides the source base station. Service, the communication between the source base station and the target core network is transparently transmitted and forwarded by the target base station, thereby minimizing the impact of the core network failure on the trunking communication system, and ensuring that the source terminal cluster user can still perform normal communication with the target terminal group. . DRAWINGS

1 is a schematic flow chart of an embodiment of a method for fault weakening processing based on a digital trunking system according to the present invention;

2 is a schematic flow chart of another embodiment of a method for fault weakening processing based on a digital trunking system according to the present invention;

FIG. 3 is a schematic structural diagram of an apparatus for fault weakening processing based on a digital trunking system according to the present invention. detailed description

The solution of the embodiment of the present invention is mainly: when the source base station detects that the source core network connected to it is faulty, the target core network connected to the adjacent target base station of the source base station provides the source base station, and between the source base station and the target core network. The communication is transparently transmitted and forwarded by the target base station adjacent to the source base station, so that the source terminal cluster user can still perform normal communication with the target terminal group.

As shown in FIG. 1, an embodiment of the present invention provides a method for fault weakening processing based on a digital trunking system, including:

Step S101: When the source base station detects that the source core network connected to it is faulty, the source base station sends a request message to the target core network connected to the target base station by using the target base station adjacent thereto, and the target core network according to the request message is The source base station establishes a communication channel;

The operating environment of the method in this embodiment includes: a terminal (UE, User Equipment) that initiates a cluster call, a base station that receives terminal user data and is wirelessly connected to the terminal (ie, a wireless broadband access system in the prior art), and is wired to the base station. A core network (ie, a network subsystem in the prior art) that connects and serves the base station.

In this embodiment, when the source base station (the base station that receives the source terminal user data in this embodiment) detects that the source core network connected to it is faulty, the source base station sends the core network of the request and the target base station to the target base station adjacent thereto. After the request message of the communication channel is established, the target base station selects the target core network served by the source base station, and forwards the request message to the selected target core network.

The foregoing request message includes, but is not limited to, the following categories: fault identifier information, source base station identifier (which may be a source wireless broadband access system identifier), and a first transparent container (the adjacent macro wireless broadband access system does not parse the first Transparent container), wherein the content of the first transparent container includes but is not limited to the following categories: cluster group identity, cluster group temporary identity, cluster group and terminal group terminal security and authentication information, terminal access Bearer information, terminal context information, and service bearer user plane data transmission information, etc., the service bearer in the first transparent container in the request message The user plane data transmission information includes the source base station address.

After the target core network receives the request message, the target core network performs terminal context information processing, user access bearer update, and user plane data channel establishment, and then returns an acknowledgement message to the source base station through the target base station, where the acknowledge message includes It is not limited to the following categories: fault identification information, source base station identifier, and second transparent container; wherein, the second transparent container includes but is not limited to the following categories: cluster group identity, cluster group temporary identity, and service bearer user plane Data transmission information, etc., in the confirmation message, the service bearer user plane data transmission information in the second transparent container includes the target core network address.

Step S102: Receive, by the target base station, an acknowledgement message returned by the target core network.

As described above, the source base station receives the acknowledgement message returned by the target core network through the target base station. Step S103: The source end user data is transmitted to the target core network by the target base station, and the source end user data is processed by the target core network.

In this embodiment, after the source base station receives the acknowledgment message returned by the target core network through the target base station, if the source terminal initiates the cluster call, that is, the source base station receives the user data sent by the source terminal, the source base station will receive The obtained user data is transmitted to the core network connected to the target base station by the target base station adjacent thereto, and the user data is processed by the target core network, and the processed data information is transmitted back to the source base station by the target core network. The processing, by the target core network, the user data includes selecting a target terminal group of the source terminal cluster call for the source terminal.

Step S104: Receive processed data information returned by the target core network by the target base station, and send the processed data information to the target terminal group.

As described above, the source base station receives the processed data information returned by the target core network through the target base station, and then the source base station sends the processed data information to the target terminal group of the cluster call.

Through the above processing method, when the core network serving the source base station fails, the core network of the target base station (adjacent target wireless broadband access system) can be guaranteed by the source base station (source wireless broadband access system). Communication between terminals and between terminals and networks. It should be noted that, in this embodiment, the source base station may be a source macro wireless broadband access base station, a source micro wireless broadband access base station, or a source evolved base station (eNodeB, Evolved Node B), etc., wherein the source macro wireless broadband The target base station corresponding to the access base station is the target macro wireless broadband access base station, the target base station corresponding to the source micro wireless broadband access base station is the target micro wireless broadband access base station, and the target base station corresponding to the source eNodeB is the target eNodeB, and The core network to which the target eNodeB is connected is the Evolved Packet Core (EPC).

In this embodiment, when the source base station detects that the source core network connected to it is faulty, the target core network connected to the adjacent target base station of the source base station provides the source base station, and the communication between the source base station and the target core network passes through the target base station. Transparent transmission and forwarding minimizes the impact of core network failures on the trunking communication system, ensuring that the source terminal cluster users can still communicate normally with their target terminal groups.

As shown in FIG. 2, another embodiment of the present invention provides a method for fault-based weakening processing based on a digital cluster system. Based on the foregoing embodiment, step S101 further includes:

Step S1011: After the source base station detects that the core network connected to it is faulty, and receives the user data sent by the source terminal, the source base station sends a request message to the target core network connected to the target base station by using the target base station adjacent thereto, by The target core network establishes a communication channel for the source base station according to the request message.

The difference between this embodiment and the foregoing embodiment is that when the source base station detects that the source core network connected to it is faulty, the source base station does not immediately send a request message to the target base station adjacent thereto, but when the source terminal initiates the cluster call. When the source base station receives the user data sent by the source terminal, the source base station sends a request message to the target base station adjacent thereto. The subsequent processing is the same as the above embodiment, and details are not described herein again.

As shown in FIG. 3, an embodiment of the present invention provides a base station for fault weakening processing based on a digital trunking system, including:

a sending module 301, configured to: when detecting that a source core network connected to the base station fails, And sending, by the target base station adjacent to the base station, a request message to a target core network connected to the target base station, where the target core network establishes a communication channel for the source base station according to the request message;

The receiving module 302 is configured to receive, by using the target base station, an acknowledgement message returned by the target core network, where the data transmission module 303 is configured to transmit the source terminal user data to the target core network by using the target base station, and process the source terminal user data by the target core network. ;

The receiving and sending module 304 is configured to receive the processed data information returned by the target core network through the target base station, and send the processed data information to the target terminal group.

In this embodiment, the base station is connected to the terminal wireless network that initiates the cluster call, and receives the user data when the terminal initiates the cluster call. In this embodiment, the base station corresponds to the wireless broadband access system in the prior art, and the foregoing base station and the core serving the base station. The network (ie, the network subsystem in the prior art) is wired.

In this embodiment, when the base station detects that the source core network connected to it is faulty, the sending module 301 sends a request message to the target base station adjacent to the base station to establish a communication channel with the core network of the target base station, and the target base station receives the request message. After the request message sent by the source base station, the target core network served by the source base station is selected, and the request message is forwarded to the selected target core network.

The foregoing request message includes, but is not limited to, the following categories: fault identifier information, source base station identifier (which may be a source wireless broadband access system identifier), and a first transparent container (the adjacent macro wireless broadband access system does not parse the first Transparent container), wherein the content of the first transparent container includes but is not limited to the following categories: cluster group identity, cluster group temporary identity, cluster group and terminal group terminal security and authentication information, terminal access The bearer information, the terminal context information, and the service bearer user plane data transmission information, and the service bearer user plane data transmission information in the first transparent container in the request message includes a source base station address.

After the target core network receives the request message, the target core network performs terminal context information processing, user access bearer update, and user plane data channel establishment, and then returns an acknowledgement message to the source base station through the target base station, where the acknowledgement message includes But not limited to the following categories: Fault identification The information, the source base station identifier, and the second transparent container; wherein, the second transparent container includes, but is not limited to, the following categories: a cluster group identity identifier, a cluster group temporary identity identifier, and a service bearer user plane data transmission information, and the foregoing confirmation message. The service bearer user plane data transmission information in the second transparent container includes the target core network address.

After the source base station receiving module 302 receives the acknowledgment message returned by the target core network through the target base station, if the source terminal initiates the cluster call, that is, the source base station receives the user data sent by the source terminal, the source base station data transmission module 303 The received user data is transmitted to the core network connected to the target base station by the target base station adjacent thereto, and the user data is processed by the target core network, and the processed data information is transmitted back to the source base station by the target core network by the target core network. . The processing of the user data by the target core network includes selecting a target terminal group of the source terminal cluster call for the source terminal.

The source base station receiving and transmitting module 304 receives the processed data information returned by the target core network through the target base station, and then sends the processed data information to the target terminal group of the cluster call.

It should be noted that, in this embodiment, the source base station may be a source macro wireless broadband access base station, a source micro wireless broadband access base station, or a source evolved base station eNodeB, etc., wherein the target corresponding to the source macro wireless broadband access base station The base station is the target macro wireless broadband access base station, the target base station corresponding to the source micro wireless broadband access base station is the target micro wireless broadband access base station, the target base station corresponding to the source eNodeB is the target eNodeB, and the core network connected to the target eNodeB For the EPC.

Further, the sending module 301 is further configured to: when the source base station detects that the source core network connected thereto is faulty, and receives the user data sent by the source terminal, the source base station connects to the target base station by using the target base station adjacent thereto. The target core network sends a request message, and the target core network establishes a communication channel for the source base station according to the request message.

In the embodiment of the present invention, when the source base station detects that the source core network connected to it is faulty, the target core network connected to the adjacent target base station of the source base station provides the source base station, and the communication between the source base station and the target core network passes the target. Base station transparent transmission and forwarding, minimally weakening the core network The impact of the barrier on the trunking communication system ensures that the source terminal cluster user can still communicate normally with its target terminal group.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and equivalent structural or process changes made by the present specification and the drawings may be directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

Claim

A method for fault weakening processing based on a digital trunking system, the method comprising:

When the source base station detects that the source core network connected to it is faulty, the source base station sends a request message to the target core network connected to the target base station by the target base station adjacent thereto, and the target core network establishes the source base station according to the request message. Communication channel

The method according to claim 1, wherein the request message comprises: fault identification information, a source base station identifier, and/or a first transparent container; wherein the first transparent container comprises: a cluster group identity Identification, cluster group temporary identity, terminal group and cluster group terminal security and authentication information, terminal access bearer information, terminal context information, and/or service bearer user plane data transmission information.

The method according to claim 1, wherein the confirmation message comprises: fault identification information, a source base station identifier, and/or a second transparent container; wherein the second transparent container comprises: a cluster group identity Identification, cluster group temporary identity, and/or service carrying user plane data transmission information.

The method according to any one of claims 1 to 3, wherein when the source base station detects that the source core network connected thereto is faulty, the source base station connects to the target base station through the target base station adjacent thereto. The target core network sends a request message, and the step of the target core network establishing a communication channel for the source base station according to the request message further includes:

When the source base station detects that the core network connected to it fails, and receives the transmission from the source terminal. After the user data, the source base station sends a request message to the target core network connected to the target base station through the target base station adjacent thereto, and the target core network establishes a communication channel for the source base station according to the request message.

The method according to claim 4, wherein the source base station is a source macro wireless broadband access base station, a source micro wireless broadband access base station or a source evolved base station eNodeB.

A base station for fault-weakening processing based on a digital trunking system, comprising: a sending module, configured to: when detecting a fault of a source core network connected to the base station, by a target adjacent to the base station The base station sends a request message to the target core network connected to the target base station, and the target core network establishes a communication channel for the source base station according to the request message;

The receiving and transmitting module is configured to receive the processed data information returned by the target core network through the target base station, and send the processed data information to the target terminal group.

The base station according to claim 6, wherein the request message comprises: fault identification information, a source base station identifier, and/or a first transparent container; wherein the first transparent container comprises: a cluster group identity Identification, cluster group temporary identity, terminal group and cluster group terminal security and authentication information, terminal access bearer information, terminal context information, and/or service bearer user plane data transmission information.

The base station according to claim 7, wherein the confirmation message comprises: fault identification information, a source base station identifier, and/or a second transparent container; wherein the second transparent container comprises: a cluster group identity Identification, cluster group temporary identity, and/or service carrying user plane data transmission information.

The base station according to claim 6, 7 or 8, wherein the sending module is further configured to: when the source base station detects that the source core network connected to it is faulty, and receives the source terminal, After the user data is sent, the source base station sends a request message to the target core network connected to the target base station through the target base station adjacent thereto, and the target core network establishes a communication channel for the source base station according to the request message.

The base station according to claim 9, wherein the source base station is a source macro wireless broadband access base station, a source micro wireless broadband access base station or a source eNodeB.