CN105992264A - Base station and self-processing method thereof - Google Patents

Abstract

The invention discloses a base station and a self-processing method thereof. The method includes: periodically detecting whether all S1-U user plane links of a serving gateway are reachable; when all S1-U user plane links are unreachable , closing the service, prohibiting the user terminal from accessing, and reporting an alarm; wherein, the S1-U user plane link is a link between the base station eNodeB and the serving gateway SGW.

Description

A base station and its self-processing method

technical field

The present invention relates to the field of Long Term Evolution (LTE, Long Term Evolution) communication, in particular to a base station and a self-processing method thereof.

Background technique

In an LTE network, a base station (eNodeB) establishes an S1-MME control plane link and an S1-U user plane link with a mobility management entity (MME, Mobility Management Entity) and a serving gateway (SGW, Service Gate Way) respectively. Under the structure, there may be a scenario where the eNodeB is reachable to the MME but not reachable to the SGW. In general networking, the eNodeB is connected to multiple SGWs in the SGW pool (SGWPOOL). If the links from the eNodeB to all SGWs are unreachable, the eNodeB will not be able to complete user attachment normally.

In the current attach process shown in Figure 1, the MME will query the domain name system (DNS, Domain Name System) to select a suitable SGW device before establishing the bearer with the SGW, and then pass the bearer establishment request (Create Session Request) The message applies to the selected SGW to establish a default bearer resource, and the SGW notifies the MME of the GPRS Tunneling Protocol (GTP, GPRS Tunneling Protocol) link IP address provided for eNodeB access through the bearer establishment response (Create Session Response) message, and the MME then initializes The context setup request (Initial Context Setup Request) message notifies the eNodeB of the IP address of the S1-U GTP link accessed. After obtaining the IP address of the S1-U GTP link, the eNodeB establishes the S1-U user plane link table (the S1-U link can also be directly configured on the eNodeB).

The current problem is that the MME queries the DNS to obtain the address of the SGW device. The target network element information returned by the DNS is used to determine the SGW device selected to establish the bearer. Whether the SGW device selected by the MME for the eNodeB and the eNodeB is reachable to the MME cannot be known by the MME. When the link between the eNodeB and the SGW designated by the MME fails, the establishment of the default bearer will fail, causing the attachment to fail. Users will repeatedly try to attach (attach) requests under this site, and because MME always selects these SGWs or according to the configured weight, users will be unable to attach to the network under this site for a long time or probabilistically, which seriously affects user experience and MME attachment. Success rate.

It can be seen that the current eNodeB equipment manufacturers do not restrict user access when all S1-U user plane links are unreachable, causing the user terminals under the eNodeB to repeatedly try to attach requests, affecting user experience and MME attachment Success rate.

Contents of the invention

In order to solve existing technical problems, an embodiment of the present invention provides a base station and a self-processing method thereof.

An embodiment of the present invention provides a base station self-processing method, the method comprising:

Periodically detect whether all S1-U user plane links of the serving gateway are reachable;

When all the S1-U user plane links are unreachable, shut down the service, prohibit the user terminal from accessing, and report an alarm.

In the above solution, the method further includes: when detecting that the S1-U user plane link is restored and reachable, allowing the user terminal to access the restoration service.

In the above solution, the disabling the service to prohibit the user terminal from accessing includes: disabling the radio frequency signal and stopping providing the service.

In the above solution, the disabling the service to prohibit the user terminal from accessing includes: enabling the base station flag, and notifying the user terminal that the base station stops providing services through a wireless broadcast signal carrying the flag.

In the above solution, allowing the user terminal to access the service restoration includes: enabling radio frequency signals to provide services.

In the above solution, the restoration of services to allow user terminals to access includes: setting a base station flag, and notifying the user terminal that the base station is normally providing services through a wireless broadcast signal carrying the flag.

In the above solution, the detecting whether the S1-U user plane link is reachable includes: detecting whether the peer address is reachable through a GTP link or an automatic ping packet.

The embodiment of the present invention also provides a base station, including:

A detection module, configured to periodically detect whether all S1-U user plane links from the base station to the serving gateway are reachable;

The management module is configured to, when the detection module detects that all S1-U user plane links are unreachable, close services, prohibit user terminals from accessing, and report an alarm.

In the above solution, the management module is further configured to restore service and allow user terminal access when the detection module detects that the S1-U user plane link is restored and reachable.

In the above solution, the management module is further configured to perform the following processing of closing services and prohibiting user terminal access: closing radio frequency signals and stopping providing services.

In the above solution, the management module is further configured to perform the following processing of closing services and prohibiting user terminal access: enabling the base station flag, and notifying the user terminal that the base station stops providing services through a wireless broadcast signal carrying the flag.

In the above solution, the management module is further configured to perform the following process of restoring services and allowing user terminals to access: enabling radio frequency signals to provide services.

In the above solution, the management module is further configured to perform the following process of allowing the user terminal to resume service access: setting a flag bit of the base station, and notifying the user terminal that the base station provides services normally through a wireless broadcast signal carrying the flag bit.

In the above solution, the detection module is configured to perform the following processing for detecting whether all S1-U user plane links are reachable: detect whether the peer address is reachable through a GTP link or an automatic ping packet.

The base station and its self-processing method provided by the embodiments of the present invention: periodically detect whether all S1-U user plane links of the serving gateway are reachable; when all the S1-U user plane links are unreachable, close the service Prohibit user terminal access and report an alarm. In this solution, an automatic management recovery mechanism of the eNodeB is established, which can automatically stop providing services and prohibit the user terminal from accessing when it is known that the S1-U user plane link is abnormal, so that the user terminal reselects the eNodeB, thereby avoiding Repeated attempts to attach have improved user experience and the success rate of MME attachment.

Description of drawings

FIG. 1 is a schematic diagram of an existing attachment (attach) process;

FIG. 2 is a schematic diagram of a base station self-processing method provided by Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a self-processing flow of a base station provided by Embodiment 2 of the present invention;

FIG. 4 is a schematic structural diagram of a base station provided by Embodiment 3 of the present invention.

detailed description

The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

At present, the base station (eNodeB) of the existing network has the ability to detect the S1-U user plane link, and can also report the error cause when the user terminal fails to attach. However, there is no mechanism to prevent the phenomenon that the user terminal repeatedly tries to attach the request when the S1-U user plane link is abnormal. That is to say, although the eNodeB has learned that the S1-U user plane link is abnormal, it has no ability to stop providing services and let the terminal reselect the eNodeB. For this reason, the embodiment of the present invention provides a self-handling solution for the base station when the S1-U user plane link is unreachable. When the link is abnormal, the provision of services is automatically stopped, the user terminal is prohibited from accessing, or the user terminal is required to reselect the eNodeB, which avoids repeated attempts of the user terminal under the eNodeB to attach.

Embodiment one

As shown in Figure 2, the base station self-processing method provided by the embodiment of the present invention includes:

Step 201, periodically detect whether all S1-U user plane links of the serving gateway SGW are reachable.

The eNodeB can establish and maintain the S1-U user plane link table from itself to the SGW through local configuration or MME signaling.

The eNodeB may periodically detect whether all S1-U user plane links in the S1-U user plane link table are reachable. Wherein, the manner of detecting whether the S1-U user plane link is reachable includes but not limited to: detecting whether the peer address is reachable through a GTP link or an automatic ping packet.

Step 202, when all the S1-U user plane links are unreachable, close the service, prohibit the user terminal from accessing, and report an alarm.

When the eNodeB detects that all the S1-U user plane links in the S1-U user plane link table are unreachable (that is, abnormal), the eNodeB can automatically block all the services it can provide to the user terminal, and prohibit the user Terminal access, so that the user terminal reselects the eNodeB to complete the attach process to the MME.

In this embodiment, when the eNodeB detects that the S1-U user plane link is unreachable, the alarm that needs to be reported is a link unreachable alarm; when all S1-U user plane links are unreachable, the service is closed and the user terminal is prohibited from accessing , the alarms that need to be reported include but are not limited to: eNodeB decommissioning alarm, cell automatic blockage prompt alarm.

Among them, the ways to close the service and prohibit the access of the user terminal include but are not limited to the following two:

Method 1: Turn off the radio frequency signal, no longer send wireless signals, stop providing services, and achieve the purpose of prohibiting user access.

Method 2: Turn on its own flag (also called an identifier), and inform the user terminal that the eNodeB stops providing services through the wireless broadcast signal carrying the flag, so as to achieve the purpose of prohibiting user terminal access without turning off the radio frequency . In this case, the eNodeB may also notify the user terminal to reselect the eNodeB through a wireless broadcast signal.

Due to the solution provided by the embodiment of the present invention, the automatic management recovery mechanism of the eNodeB is added, and the eNodeB periodically detects whether the S1-U user plane link is reachable, and when it detects that some S1-U user plane links are recoverable , the eNodeB restores the service and allows the user terminal to access.

Among them, for the method of disabling user terminal access by closing the service, the methods of eNodeB restoring service and allowing user terminal access include but are not limited to the following two:

Method 1: Turn on the radio frequency signal, send wireless signals, and provide services.

Method 2: Set the flag bit of the base station, and notify the user terminal that the base station provides services normally through a wireless broadcast signal carrying the flag bit.

Embodiment two

Based on the self-processing method of the base station provided by the above-mentioned embodiments of the present invention, as shown in FIG. 3 , when the S1-U user plane link is abnormal, the self-processing process of the base station includes:

In step 301, the eNodeB establishes and maintains the SI-U user plane link table through local configuration or MME signaling.

In step 302, the eNodeB detects each SI-U user plane link in the SI-U user plane link table, and reports an alarm (link unreachable alarm) to the MME for unreachable SI-U user plane links.

Step 303, whether all SI-U user plane links are unreachable, if not, go to step 304; if yes, go to step 305.

Step 304, as long as there are reachable SI-U user plane links in the SI-U user plane link table, the eNodeB can continue to provide services to the user terminal through the reachable SI-U user plane links. Then, according to the preset detection period, when the detection time arrives, return to step 302 and subsequent steps.

Step 305, when all the SI-U user plane links in the SI-U user plane link table are unreachable, the eNodeB shuts down the service, prohibits the user terminal from accessing, and reports an alarm (eNodeB decommissioning alarm, cell automatic blockage prompt alarm, etc. ), so that the user terminal reselects an eNodeB to complete the attach process to the MME, which avoids repeated attempts of the user terminal to attach the request under the eNodeB.

Step 306: According to the preset detection period, when the detection time arrives, the eNodeB detects each SI-U user plane link in the SI-U user plane link table, and confirms whether there is any SI-U user plane link that can be recovered If not, go to step 307; if yes, go to step 308.

Step 307, if none of the SI-U user plane links in the SI-U user plane link table is restored and reachable, then the eNodeB remains in a state of prohibiting user terminal access. Then, according to the preset detection period, when the detection time arrives, step 306 is executed.

Step 308, if some or all of the SI-U user plane links in the SI-U user plane link table are restored and reachable, then the eNodeB restores its own services to allow the user terminal to access (from the partially or fully restored SI-U Select one of the user plane links for the user terminal to access), and report the corresponding notification, which is used to cancel the above-mentioned eNodeB decommissioning alarm, cell automatic blockage prompt alarm, and also used to cancel part or all of the SI-U that has recovered reachability Link unreachable alarm corresponding to the user plane link.

After this step, the eNodeB can select one of the SI-U user plane links that are partially or fully restored and accessible for the user terminal to access and provide services. Then, according to the preset detection period, when the detection time arrives, the eNodeB detects each SI-U user plane link in the SI-U user plane link table. Before detection, the SI-U user plane link table has the following situations:

1. The SI-U user plane links in the SI-U user plane link table have all been restored to be reachable;

2. Some SI-U user plane links in the SI-U user plane link table are restored to be reachable.

For scenario 1, it can be executed according to step 302 and subsequent procedures;

For scenario 2, when the eNodeB detects, when the SI-U user plane link whose state is unreachable returns to reachable, the eNodeB reports a corresponding notification to the MME and cancels the corresponding link unreachable alarm. When the SI-U user plane link is abnormally changed to be unreachable again, the eNodeB will report an alarm (link unreachable alarm). SI-U user plane link, then in this case, the eNodeB can re-select a suitable SI-U user plane link for user terminal access according to the detected SI-U user plane link status; If the subsequent SI-U user plane link states are all unreachable, then step 305 and subsequent processes are performed.

Embodiment Three

The embodiment of the present invention also provides a base station, as shown in FIG. 4, including:

A detection module 10, configured to periodically detect whether all S1-U user plane links from the base station to the serving gateway are reachable;

The management module 20 is configured to, when the detection module 10 detects that all S1-U user plane links are unreachable, shut down services, prohibit user terminals from accessing, and report an alarm.

Wherein, the management module 20 is configured to perform the following processing of closing services and prohibiting user terminal access:

Turn off the radio frequency signal and cease to provide service; or,

Turn on the flag bit of the base station, and notify the user terminal that the base station stops providing services through a wireless broadcast signal carrying the flag bit.

The management module 20 is further configured to, when the detection module 10 detects that the S1-U user plane link is restored and reachable, allow the user terminal to access the restoration service, and report a restoration notification.

The management module 20 is also configured to perform the following process of allowing user terminal access to resume services:

Turn on the radio frequency signal to provide the service; or, set the flag bit of the base station, and inform the user terminal that the base station provides the service normally through the wireless broadcast signal carrying the flag bit.

The detection module 10 is also configured to perform the following processing for detecting whether all S1-U user plane links are reachable: detect reachability of peer addresses through GTP links or automatic ping packets.

The management module 20 is further configured to report a link unreachable alarm to the MME when the detection module 10 detects that the S1-U user plane link is unreachable. The alarms reported by the management module 20 to the MME when the service is closed and the user terminal is prohibited from accessing include but not limited to: eNodeB decommissioning alarms and cell automatic blockage prompt alarms.

The management module 20 is further configured to report a notification to the MME and cancel the link unreachable alarm, eNodeB decommissioning alarm, and cell automatic blockage prompt alarm when the service is restored and the user terminal is allowed to access.

It should be noted that the detection module 10 and the management module 20 may be composed of a central processing unit (CPU, Central Processing Unit), a microprocessor (MPU, Micro Processing Unit), a digital signal processor (DSP, Digital Signal Processor) of the base station Or a programmable logic array (FPGA, Field-Programmable Gate Array); the storage unit 40 may be implemented by a memory of an electronic device.

To sum up, through the embodiment of the present invention, an automatic management recovery mechanism of the eNodeB is established, which can automatically stop providing services and prohibit the user terminal from accessing so that the user terminal reselects the eNodeB when it is known that the S1-U user plane link is abnormal. Repeated attempts to attach by the user terminal under the eNodeB are avoided, and user experience and MME attach success rate are improved.

In the several embodiments provided by the present invention, it should be understood that the disclosed methods, devices and electronic equipment can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the mutual coupling, or direct coupling, or communication connection between the various components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units; Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention can be integrated into one processing unit, or each unit can be used as a single unit, or two or more units can be integrated into one unit; the above-mentioned integration The unit can be realized in the form of hardware or in the form of hardware plus software functional unit.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the Including the steps of the foregoing method embodiments; and the foregoing storage medium includes: a removable storage device, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc. A medium on which program code can be stored.

Alternatively, if the above-mentioned integrated units in the embodiments of the present invention are implemented in the form of software function modules and sold or used as independent products, they may also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for Make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the methods described in various embodiments of the present invention. The aforementioned storage media include: various media capable of storing program codes such as removable storage devices, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (14)

1. A base station self-processing method, comprising:

periodically detecting whether all S1-U user plane links of the service gateway are reachable;

and when all the S1-U user interface links are not reachable, closing the service to prohibit the user terminal from accessing, and reporting an alarm.

2. The base station self-processing method as claimed in claim 1, further comprising: and when detecting that the S1-U user plane link is recovered to be reachable, recovering the service and allowing the user terminal to access.

3. The base station self-processing method according to claim 2, wherein the service shutdown forbids user terminal access, comprising: and turning off the radio frequency signal and stopping providing the service.

4. The base station self-processing method according to claim 2, wherein the service shutdown forbids user terminal access, comprising: and starting a flag bit of the base station, and informing a user terminal that the base station stops providing service through a wireless broadcast signal carrying the flag bit.

5. The base station self-processing method of claim 3, wherein the resuming service allows the user terminal to access, and comprises: and starting the radio frequency signal to provide service.

6. The base station self-processing method according to claim 4, wherein the resuming service allows the user terminal to access, and comprises: setting a flag bit of a base station, and informing a user terminal that the base station normally provides service through a wireless broadcast signal carrying the flag bit.

7. The base station self-processing method according to any of claims 1 to 6, wherein said detecting S1-U user plane link reachability comprises: and detecting whether the address of the opposite terminal is reachable through a GTP link or an automatic ping packet.

8. A base station, comprising:

a detection module, configured to periodically detect whether all S1-U user plane links from the base station to a serving gateway are reachable;

and the management module is used for closing the service to prohibit the user terminal from accessing and reporting an alarm when the detection module detects that all S1-U user plane links are not reachable.

9. The base station of claim 8, wherein the management module is further configured to resume the service and allow the user terminal to access when the detection module detects that the S1-U user plane link is reachable again.

10. The base station of claim 9, wherein the management module is further configured to perform the following off service barring user terminal access processing: and turning off the radio frequency signal and stopping providing the service.

11. The base station of claim 9, wherein the management module is further configured to perform the following off service barring user terminal access processing: and starting a flag bit of the base station, and informing a user terminal that the base station stops providing service through a wireless broadcast signal carrying the flag bit.

12. The base station of claim 10, wherein the management module is further configured to perform the following recovery service admission process for the ue: and starting the radio frequency signal to provide service.

13. The base station of claim 11, wherein the management module is further configured to perform the following recovery service admission process for the ue: setting a flag bit of a base station, and informing a user terminal that the base station normally provides service through a wireless broadcast signal carrying the flag bit.

14. The base station according to any of claims 8 to 13, wherein the detection module is configured to perform the following process of detecting whether all S1-U user plane links are reachable: and detecting whether the address of the opposite terminal is reachable through a GTP link or an automatic ping packet.