CN102547819B - Method for solving problem of double streams under 1+1 scene - Google Patents

Abstract

The present invention provides a method and equipment for solving the problem of double streams in a 1+1 scenario. The method includes obtaining the APS state of the standby RSG and the state of the working PW; if it is determined according to the APS state of the standby RSG that a state switch has occurred in the standby RSG, and according to the state of the working PW, it is determined that the working PW is normal, blocking the communication from the working PW flow in the direction. The embodiment of the present invention can reduce the load and improve the transmission quality.

Description

The solution to the double stream problem in the 1+1 scenario

technical field

The present invention relates to the technical field of mobile communication, in particular to a method and equipment for solving the problem of double streams in a 1+1 scenario.

Background technique

In the Internet Protocol (Internet Protocol, IP) radio access network (Radio Access Network, RAN) reliability solution, the requirements for service switching performance are extremely high. In the 1+1 scenario, in order to ensure the handover performance, the radio network controller (Radio Network Controller, RNC) side gateway (RNC Site Gateway, RSG) and the base station controller (Base Station Controller, BSC) or radio network controller ( Enhanced Automatic Protection Switching (Enhanced Automatic Protection Switching, E-APS) technology is deployed between Radio Network Controller, RNC) (hereinafter referred to as BSC/RNC for short). In addition, for traffic transmission from the BSC/RNC side to the Cell Site Gateway (CSG) side, dual transmission is configured on the BSC/RNC. After dual transmission is configured, the BSC/RNC will send the traffic to the primary RSG and backup RSG, if there is no fault between the active RSG and the standby RSG, the active RSG and the standby RSG can exchange messages through the Inter Chasis Backup (Inter Chasis Backup, ICB) pseudowire (Pseudo Wire, PW) between the two, so that the standby RSG The RSG knows that it is the standby RSG, and the standby RSG discards the traffic from the BSC/RNC after determining that it is the standby RSG. Therefore, the traffic sent by the BSC/RNC will only be sent to the CSG through the primary RSG and the working PW (working PW) between the primary RSG and the CSG. At this point, the CSG receives a copy of the traffic.

However, if a fault occurs between the active RSG and the standby RSG, the active RSG and the standby RSG cannot exchange messages, and the standby RSG does not know that it is the standby RSG. At this time, the standby RSG will treat itself as the primary device, so , the traffic sent by BSC/RNC will not be discarded on the standby RSG. At this time, the traffic sent by BSC/RNC will be sent to CSG through the active RSG and the working PW (working PW) between the active RSG and CSG. In addition, It will also be sent to CSG through the standby RSG and the protection PW (protection PW) between the standby RSG and CSG. In this way, two traffics will be received on CSG. Since the CSG is located on the base station side, when the CSG receives two copies of traffic, it will increase the load and reduce the transmission quality.

Contents of the invention

The present invention provides a method and device for solving the problem of double traffic in a 1+1 scenario, so as to avoid double traffic on the CSG when a fault occurs between the active RSG and the standby RSG, thereby reducing load and improving transmission quality.

The present invention provides a method for solving the double stream problem in a 1+1 scenario, including:

Obtain the APS status of the standby RSG and the status of the working PW;

If it is determined according to the APS state of the standby RSG that the standby RSG has performed state switching, and it is determined according to the state of the working PW that the working PW is normal, then blocking traffic from the direction of the working PW.

The present invention provides a device for solving the double stream problem in a 1+1 scenario, including:

An acquisition module, configured to acquire the APS status of the standby RSG and the status of the working PW;

The blocking module is configured to block the flow from the direction of the working PW when it is determined according to the APS state of the standby RSG that the state switching of the standby RSG occurs, and when it is determined that the working PW is normal according to the state of the working PW.

It can be seen from the above technical solution that the embodiment of the present invention can only receive traffic from the direction of the protection PW by blocking the traffic from the direction of the working PW when the state switching of the standby RSG occurs and the working PW is normal, so as to avoid double traffic. , thereby reducing load and improving transmission quality.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the schematic flow chart of the method of the first embodiment of the present invention;

Fig. 2 is a schematic flow chart of the method of the second embodiment of the present invention;

Figure 3 is a schematic diagram of the 1+1 scenario corresponding to Figure 2;

Fig. 4 is a schematic diagram of the device structure of the third embodiment of the present invention.

Detailed ways

In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Fig. 1 is a schematic flow chart of the method of the first embodiment of the present invention, including:

Step 11: The CSG acquires the APS status of the standby RSG and the status of the working PW;

Among them, the APS protocol can be deployed on the CSG and the standby RSG, so that the CSG can know the status of the standby RSG, and the detection protocol can be deployed between the CSG and the active RSG, and the working PW (working PW) between the CSG and the active RSG can be learned through link detection. PW) state.

For example, when the CSG receives a notification message sent by the standby RSG through the APS state machine configured by itself, it may determine that the standby RSG has a state switchover, wherein the notification message indicates that the standby RSG has a state switchover, and the notification message is that the standby RSG is in Sent after it is determined that a fault occurs between the active RSG and the standby RSG and the state is switched.

For another example, if the CSG receives the heartbeat message sent by the master RSG on the working PW using the detection protocol, it determines that the working PW is normal.

Step 12: If it is determined according to the APS state of the standby RSG that a state switch has occurred in the standby RSG, and it is determined according to the APS state of the working PW that the working PW is normal, then block traffic from the direction of the working PW.

Among them, the forwarding table entry is saved in the CSG to indicate which direction the traffic is received. If the forwarding table entry of a certain direction is invalid, it indicates that the traffic from the corresponding direction cannot be received. Therefore, in this embodiment, the forwarding entry from the direction of the working PW can be set as invalid, so as to block the traffic from the direction of the working PW.

In this embodiment, by blocking the traffic from the direction of the working PW when the state of the standby RSG is switched and the working PW is normal, only the traffic from the direction of the protection PW can be received, avoiding double traffic, thereby reducing the load and improving transmission quality.

FIG. 2 is a schematic flowchart of a method according to a second embodiment of the present invention, and FIG. 3 is a schematic diagram of a 1+1 scenario corresponding to FIG. 2 .

Referring to Figure 3, this embodiment is aimed at the 1+1 scenario, that is, dual transmission is configured on the BSC/RNC, and E-APS is deployed between the RSG and the BSC/RNC. After the E-APS is deployed, if there is no If a fault occurs, heartbeat messages can be exchanged between the active RSG and the standby RSG through the ICB PW. When a fault occurs between the active RSG and the standby RSG, both RSGs treat themselves as the primary device. Therefore, traffic can pass through the active RSG and the working PW (Working PW), and through the standby RSG and the protection PW (Protection PW). PW) to send.

Referring to Fig. 2, the present embodiment includes:

Step 21: The standby RSG detects a failure between the primary RSG and the standby RSG.

For example, as shown in Figure 3, after the ICB PW between the active RSG and the standby RSG is broken, the standby RSG can no longer receive heartbeat messages from the active RSG, and can detect a failure between the active RSG and the standby RSG.

Step 22: The standby RSG switches the state of the PW-APS state machine configured by itself from the ICB PW to the protection PW.

Wherein, in this embodiment, an APS is also deployed between the CSG and the RSG, and the deployed APS may be called a PW-APS.

Moreover, since the state machine is usually deployed on the standby RSG side, in this embodiment, the PW-APS state machine will be deployed on the standby RSG and CSG.

In addition, when a fault occurs, the state of the state machine usually switches, and since the state of the state machine is ICB PW when the master RSG and the standby RSG are normal, therefore, when the above fault occurs in this embodiment, the state machine on the standby RSG The state of the PW-APS state machine will switch from the ICB PW to the protection PW.

Step 23: The standby RSG notifies the CSG of the state after switching.

Wherein, the PW-APS state machine can also be deployed on the CSG. In this way, the standby RSG and the CSG can exchange messages for notifying the status through the protection PW, so that the CSG can learn the status of the standby RSG.

Step 24: The CSG switches the state of the PW-APS state machine configured by itself from the working PW to the protection PW according to the state notified by the standby RSG.

Wherein, when the CSG receives the switching result of the standby RSG, since the result indicates that the standby RSG switches to the protection PW, the CSG also needs to switch to the protection PW.

Referring to Figure 3, after the CSG is switched to the protection PW, if the CSG wants to send traffic to the BSC/RNC, it will send traffic from the protection PW.

Step 25: The CSG queries the status of the working PW, and if the working PW is normal, sets the defect status of the working PW as no defect.

Wherein, since a detection protocol is deployed between the CSG and the primary RSG, heartbeat messages can be exchanged between the CSG and the primary RSG to determine whether the working PW is normal.

Step 26: When the CSG selects the protection PW and determines that the defect status of the working PW is no defect, the CSG blocks traffic from the direction of the working PW.

Referring to Figure 3, since both the CSG and the backup RSG are switched to the protection PW, traffic can be sent from the protection PW to the CSG. In order to prevent the CSG from receiving two copies of traffic, the CSG will block the traffic from the working PW.

Specifically, a forwarding entry is saved in the CSG, which is used to indicate which direction the traffic is received. In order to block the flow from the direction of the working PW, you can set the flag from the direction of the working PW in the forwarding entry to invalid.

In this embodiment, the APS state machines are respectively set on the CSG and the standby RSG, and the standby RSG performs state switching after finding a failure between the primary RSG and the standby RSG and notifies the CSG. When the CSG determines that the standby RSG is switched and the working PW is normal , to block traffic from the direction of the working PW, so that only traffic from the direction of the protection PW can be received, avoiding double traffic, thereby reducing load and improving transmission quality.

4 is a schematic diagram of the device structure of the third embodiment of the present invention, including an acquisition module 41 and a blocking module 42; the acquisition module 41 is used to obtain the APS status of the standby RSG and the status of the working PW; The APS state of the standby RSG determines that a state switchover has occurred in the standby RSG, and when it is determined that the working PW is normal according to the state of the working PW, block traffic from the direction of the working PW.

Optionally, the obtaining module is configured to: receive a notification message sent by the standby RSG through the APS state machine configured by itself, the notification message indicates that the standby RSG has a state switchover, and the notification message is that the standby RSG determines the status of the primary RSG It is sent after a fault occurs between the standby RSG and the state is switched, and it is determined according to the notification message that the standby RSG has a state switch.

Optionally, the obtaining module is configured to: determine that the working PW is normal if a heartbeat message sent by the master RSG on the working PW using a detection protocol is received.

Optionally, the blocking module is configured to: set the forwarding entry from the direction of the working PW to be invalid.

Optionally, the device may further include: a sending module, configured to send traffic from the protection PW when sending traffic to the BSC/RNC.

In this embodiment, by blocking the traffic from the direction of the working PW when the state of the standby RSG is switched and the working PW is normal, only the traffic from the direction of the protection PW can be received, avoiding double traffic, thereby reducing the load and improving transmission quality.

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 It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. a method for solving problem of double streams under 1+1 scene, is characterized in that, comprising:

Obtain the APS APS state of standby radio network controller side gateway RSG and the state of the pseudo-line PW of work;

If determine for RSG generation state and switch according to the APS state of described standby RSG, and determine that according to the state of described work PW work PW is normal, block from the flow in work PW direction;

Wherein, described in obtain the APS state of standby RSG, comprising:

The APS state machine configuring by self receives the notification message that standby RSG sends, described notification message shows to switch for RSG generation state, described notification message is that described standby RSG breaks down and also after switch status, sends between definite main RSG and standby RSG, determines for RSG generation state and switches according to described notification message.

2. method according to claim 1, is characterized in that, described in obtain the state of work PW, comprising:

If receive the heartbeat message that main RSG adopts detection protocol to send on work PW, determine that work PW is normal.

3. method according to claim 1, is characterized in that, described blocking-up, from the flow in work PW direction, comprising:

It is invalid to be set to from the forwarding-table item of work PW direction.

4. according to the method described in claim 1-3 any one, it is characterized in that, also comprise:

When to BSC/RNC transmitted traffic, from protection, PW sends.

5. an equipment for solving problem of double streams under 1+1 scene, is characterized in that, comprising:

Acquisition module, for obtaining the APS APS state of standby radio network controller side gateway RSG and the state of the pseudo-line PW of work;

Blocking-up module, for determining that according to the APS state of described standby RSG standby RSG generation state switching, and while determining that according to the state of described work PW work PW is normal, blocking-up is from the flow in work PW direction;

Wherein, described acquisition module is used for:

The APS state machine configuring by self receives the notification message that standby RSG sends, described notification message shows to switch for RSG generation state, described notification message is that described standby RSG breaks down and also after switch status, sends between definite main RSG and standby RSG, determines for RSG generation state and switches according to described notification message.

6. equipment according to claim 5, is characterized in that, described acquisition module is used for:

In the time receiving main RSG and adopt the heartbeat message that detection protocol sends on work PW, determine that work PW is normal.

7. equipment according to claim 5, is characterized in that, described blocking-up module is used for:

It is invalid to be set to from the forwarding-table item of work PW direction.

8. according to the equipment described in claim 5-7 any one, it is characterized in that, also comprise:

Sending module, for when to BSC/RNC transmitted traffic, from protection, PW sends.