WO2014205735A1

WO2014205735A1 - Communication method and device

Info

Publication number: WO2014205735A1
Application number: PCT/CN2013/078158
Authority: WO
Inventors: 赵静
Original assignee: 华为技术有限公司
Priority date: 2013-06-27
Filing date: 2013-06-27
Publication date: 2014-12-31
Also published as: CN103703838A

Abstract

Disclosed are a communication method and device. The method comprises: a first base station acquiring relevant information about an S1 link failure of a second base station serving as a target base station;and the first base station determining a switching type or reselecting a target base station according to the relevant information about the S1 link failure. The LTE switching efficiency can be improved when an X2 switching has failed.

Description

Communication method and device

The present invention relates to the field of communications technologies, and in particular, to a communication method and device. Background technique

In order to meet the challenges of wireless broadband technology and maintain the leading edge of the 3rd generation partnership project (3GPP) network, 3GPP has developed a long-term evolution of mobile communication networks.

The long term evolution (LTE) program, under the guidance of this evolution plan, defines a new mobile communication network architecture, ie, the Long Term Evolution / System Architecture Evolution (LTE/SAE) network system. Architecture.

In an LTE/SAE network, handover can be divided into X2-based handover and S1-based handover. An X2 signaling plane connection is established between the source of the handover and the target base station (e.g., evolved Node B (e B), also referred to as an evolved base station), and the source eNB and the target eNB belong to the same Mobility management entity

(Mobility Management Entity, MME) When the resource pool is used, X2-based handover can be initiated, otherwise an S1-based handover is initiated.

Currently, in the X2 handover process, if the X2 handover fails, the source base station turns on the protection timer, and prohibits the X2 handover from being initiated to the target base station before the timer expires. However, the handover to the target base station will still be triggered again after the timer expires, which may result in a new handover failure.

It can be seen that in the prior art, when the X2 handover fails, the LTE handover efficiency is low. Summary of the invention

In the embodiment of the present invention, a communication method and device are provided, which are improved when an X2 handover fails.

LTE switching efficiency.

In order to solve the above technical problem, the embodiment of the present invention discloses the following technical solutions:

In a first aspect, a communication method is provided, including:

The first base station acquires information about an S1 link failure of the second base station that is the target base station;

The first base station determines a handover type or reselects a target base station according to the information about the S1 link failure.

With reference to the foregoing first aspect, in a first possible implementation manner of the first aspect, the S1 link is faulty The related information includes the reason for the handover failure, where the handover failure cause includes the information of the S1 link failure, and the first base station acquires the information about the S1 link fault of the second base station that is the target base station, including: The first base station sends a handover request message to the second base station;

The first base station receives a response message of the second base station to the handover request message, where the response message includes the handover failure cause, and the handover failure cause includes information of an S1 link failure.

In conjunction with the first possible implementation of the foregoing first aspect, in a second possible implementation of the first aspect, the response message is a handover preparation failure response message.

With reference to the foregoing first aspect or the first or second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the information related to the S1 link fault includes a faulty S1 link Corresponding information about the mobility management entity MME, and the information about the S1 link failure of the second base station by the first base station includes:

Receiving, by the first base station, a base station configuration update message sent by the second base station, where the base station configuration update message includes information about an MME corresponding to the faulty S1 link, and the base station configuration update message is sent by the second base station And transmitting to the first base station when the S1 link failure is detected.

In a fourth possible implementation manner of the foregoing first aspect, in a fourth possible implementation manner of the foregoing aspect, the base station configuration update message includes one or all of the following information:

Deleting the information of the MME, including the information of the MME corresponding to the faulty S1 link in the S1 link between the second base station and all the MMEs connected thereto;

The MME information is added, and the information of the MME corresponding to the normal S1 link is restored in the S1 link between the second base station and all the MMEs connected thereto.

In a third or fourth possible implementation manner of the foregoing first aspect, in a fifth possible implementation manner of the foregoing aspect, the information about the MME includes a GUMMEI or an MMEC of the MME.

In a second aspect, a communication method is provided, including:

The second base station monitors a state of the S1 link between the second base station and the MME;

When the S1 link is faulty, the second base station sends the information of the MME corresponding to the faulty S1 link to the first base station.

With reference to the foregoing second aspect, in a first possible implementation manner of the second aspect, the second base station sends the information of the MME corresponding to the faulty S1 link to the first base station by using a base station configuration update message.

In conjunction with the first possible implementation of the foregoing second aspect, in a second possible implementation of the second aspect, the base station configuration update message includes one or all of the following information:

Deleting information of the MME, including an S1 link between the second base station and all MMEs connected thereto The information of the MME corresponding to the failed SI link;

With reference to the foregoing second aspect or the first or second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the information of the MME includes a GUMMEI or an MMEC of the MME.

With reference to the second aspect or the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, when the user equipment under the first base station needs to be switched Before the second base station, and before the second base station sends the information about the MME corresponding to the faulty S1 link to the first base station, the method further includes:

Receiving, by the second base station, a handover request message sent by the first base station;

The second base station sends a response message of the handover request message to the first base station, where the response message includes a handover failure cause, and the handover failure cause includes information of the S1 link failure.

In conjunction with the fourth possible implementation of the foregoing second aspect, in a fifth possible implementation of the second aspect, the response message includes a handover preparation failure response message.

In a third aspect, a communication method is provided, including:

Receiving, by the first base station, information about the MME sent by the second base station, where the S1 link between the MME and the second base station is faulty;

And when the first base station correctly receives the information of the MME, sending an acknowledgement message to the second base station. In conjunction with the foregoing third aspect, in a first possible implementation manner of the third aspect, the first base station receives information of the MME by using a base station configuration update message sent by the second base station.

In conjunction with the first possible implementation manner of the foregoing third aspect, in a second possible implementation manner of the third aspect, the base station configuration update message includes one or all of the following information:

With reference to the foregoing third aspect or the first or second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the information of the MME includes a GUMMEI or an MMEC of the MME.

With reference to the third aspect or the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the first base station receives the MME After the information, the user equipment in the first base station needs to be handed over to the second base station, the method further includes: The first base station determines a handover type or reselects a target base station according to the information of the MME. With reference to the foregoing third aspect, or the first possible implementation manner of the third aspect, to the third possible implementation manner, in a fifth possible implementation manner of the third aspect, the first base station receives The method further includes: when the user equipment of the first base station needs to be handed over to the second base station, the method further includes:

Transmitting, by the first base station, a handover request message to the second base station;

The first base station receives a response message of the handover request message sent by the second base station, where the response message includes a handover failure cause, and the handover failure cause includes information of the S1 link failure.

In conjunction with the fifth possible implementation manner of the foregoing third aspect, in a sixth possible implementation manner of the third aspect, the method further includes:

Determining a handover type or reselecting a target base station according to the information of the S1 link failure in the handover failure cause.

In conjunction with the fifth or sixth possible implementation manner of the foregoing third aspect, in a sixth possible implementation manner of the third aspect, the response message includes a handover preparation failure response message.

In a fourth aspect, a base station is provided, including:

a fault acquiring module, configured to acquire information about an S1 link fault of the target base station;

And a first processing module, configured to determine a handover type or reselect the target base station according to the related information of the S1 link failure.

With reference to the foregoing fourth aspect, in a first possible implementation manner of the foregoing aspect, the information related to the S1 link fault includes a handover failure cause, where the handover failure cause includes information of an S1 link fault, and The fault acquisition module includes:

a first requesting unit, configured to send a handover request message to the target base station;

The first receiving unit is configured to receive a response message of the target base station to the handover request message, where the response message includes the handover failure cause, and the handover failure cause includes information of an S1 link failure.

In conjunction with the first possible implementation of the foregoing fourth aspect, in a second possible implementation of the fourth aspect, the response message is a handover preparation failure response message.

With reference to the foregoing fourth aspect or the first or second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the information related to the S1 link fault includes a faulty S1 link corresponding

Information about the MME, and the fault obtaining module includes:

a second receiving unit, configured to receive a base station configuration update message sent by the target base station, where the base station configuration update message includes information of a mobility management entity MME corresponding to the faulty S1 link, and the base station is configured The update message is sent when the target base station detects that the S1 link is faulty.

In conjunction with the third possible implementation manner of the foregoing fourth aspect, in a fourth possible implementation manner of the fourth aspect, the base station configuration update message includes one or all of the following information:

Deleting the information of the MME, including the information of the MME corresponding to the faulty S1 link in the S1 link between the target base station and all the MMEs connected thereto;

The MME information is added, and the information of the MME corresponding to the normal S1 link is restored in the S1 link between the target base station and all the MMEs connected thereto.

With reference to the third or fourth possible implementation manner of the foregoing fourth aspect, in a fifth possible implementation manner of the fourth aspect, the information about the MME includes a GUMMEI or an MMEC of the MME.

In a fifth aspect, a base station is provided, including:

a monitoring module, configured to monitor a status of an S1 link with the MME;

The fault sending module is configured to: when the S1 link fault is detected, send information about the MME corresponding to the faulty S1 link to the neighboring base station.

With reference to the foregoing fifth aspect, in a first possible implementation manner of the fifth aspect, the fault sending module sends, by using a base station configuration update message, the information of the MME corresponding to the faulty S1 link to the neighboring base station.

With reference to the first possible implementation manner of the foregoing fifth aspect, in a second possible implementation manner of the fifth aspect, the base station configuration update message includes one or all of the following information:

Deleting the information of the MME, including the information of the MME corresponding to the faulty S1 link in the S1 link between the base station and all the MMEs connected thereto;

The information of the MME is updated, and the information of the MME corresponding to the normal S1 link is restored in the S1 link between the base station and all the MMEs connected thereto.

With reference to the foregoing fifth aspect or the first or second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the information of the MME includes a GUMMEI or an MMEC of the MME.

With reference to the foregoing fifth aspect, or one of the first to the third possible implementation manners of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the method further includes:

a request receiving module, configured to receive a handover request message sent by the neighboring base station;

The response sending module is configured to send a response message of the handover request message to the neighboring base station, where the response message includes a handover failure cause, and the handover failure cause includes information of the S1 link failure.

In conjunction with the fourth possible implementation manner of the foregoing fifth aspect, in a fifth possible implementation manner of the fifth aspect, the response message includes a handover preparation failure response message.

In a sixth aspect, a base station is provided, including: a third receiving module, configured to receive information about an MME sent by a neighboring base station, where an S1 link between the MME and the neighboring base station is faulty;

And an acknowledgment module, configured to send an acknowledgment message to the neighboring base station when the information of the MME is correctly received. With reference to the foregoing sixth aspect, in a first possible implementation manner of the sixth aspect, the third receiving module receives information about the MME by using a base station configuration update message sent by the neighboring base station.

In conjunction with the first possible implementation manner of the foregoing sixth aspect, in a second possible implementation manner of the sixth aspect, the base station configuration update message includes one or all of the following information:

Deleting the information of the MME, including the information of the MME corresponding to the faulty S1 link in the S1 link between the neighboring base station and all the MMEs connected thereto;

The MME information is added, and the information of the MME corresponding to the normal S1 link is restored in the S1 link between the neighboring base station and all the MMEs connected thereto.

With reference to the foregoing sixth aspect, or the first or second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the information of the MME includes a GUMMEI or an MMECo of the MME

With reference to the foregoing sixth aspect, or one of the first to the third possible implementation manners of the sixth aspect, in a fourth possible implementation manner of the sixth aspect,

And a second processing module, configured to: after receiving the information of the MME, when the user equipment under the base station needs to switch to the neighboring base station, determine, according to the information of the MME, a handover type or reselect a target base station.

With reference to the foregoing sixth aspect, or one of the first to the third possible implementation manners of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the method further includes:

a second requesting module, configured to: before the base station receives the information of the MME, when the user equipment under the base station needs to switch to the neighboring base station, send a handover request message to the neighboring base station;

And a second receiving module, configured to receive a response message of the handover request message sent by the neighboring base station, where the response message includes a handover failure cause, and the handover failure cause includes information about the S1 link failure.

In conjunction with the fifth possible implementation manner of the foregoing sixth aspect, in a sixth possible implementation manner of the sixth aspect, the method further includes:

And a third processing module, configured to determine a handover type or reselect the target base station according to the information about the S1 link failure in the handover failure reason.

In conjunction with the fifth or sixth possible implementation manner of the foregoing sixth aspect, in a seventh possible implementation manner of the sixth aspect, the response message includes a handover preparation failure response message. According to a seventh aspect, a server is provided, including: a first processor, a first memory, a bus, and a communication interface; the first memory is configured to store a computer execution instruction, and the first processor and the first memory pass The bus connection, when the server is running, the first processor executes the computer execution instruction stored in the first memory, and communicates with a device external to the server through the communication interface, so that The server performs the communication method of any of the first aspects.

In an eighth aspect, a server is provided, including: a second processor, a second memory, a bus, and a communication interface; the second memory is configured to store a computer to execute an instruction, and the second processor and the second memory pass The bus connection, when the server is running, the second processor executes the computer execution instruction stored in the second memory, and communicates with a device external to the second server through the communication interface, The second server is configured to perform the communication method according to any one of the second aspects.

A ninth aspect, a server is provided, including: a third processor, a third memory, a bus, and a communication interface; the third memory is configured to store a computer to execute an instruction, and the third processor and the third memory pass The bus connection, when the server is running, the third processor executes the computer execution instruction stored in the third memory, and communicates with a device external to the server through the communication interface, so that The first server performs the communication method according to any one of the third aspects.

In the embodiment of the present invention, for the X2-based handover, if an abnormality occurs in the MME resource pool of the first base station that is the source base station and the second base station that is the target base station, the S1 between the MME and the first base station When the link is normal, and the S1 link between the second base station and the second base station is faulty, the first base station can obtain the fault information in time by feeding back the S1 link fault information between the MME and the second base station to the first base station. The X2 handover related to the faulty S1 link is not initiated to the second base station, so as to avoid the scenario where the X2 handover fails repeatedly, and the LTE handover efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and other drawings may be obtained from those of ordinary skill in the art without departing from the scope of the invention.

FIG. 1 is a flowchart of a communication method according to an embodiment of the present invention;

2 is a flowchart showing an implementation of step 101 in FIG. 1;

FIG. 3 is a flowchart of another communication method according to an embodiment of the present invention;

FIG. 4 is a flowchart of still another communication method according to an embodiment of the present invention; FIG. 5 is a flowchart of still another communication method according to an embodiment of the present invention;

Figure 6 is a flow chart showing another communication method corresponding to Figure 5;

Figure 7 is a flow chart showing still another communication method corresponding to Figure 5;

FIG. 8 is a structural block diagram of a first type of base station according to an embodiment of the present invention;

FIG. 9 is a structural block diagram of a second base station according to an embodiment of the present invention;

FIG. 10 is a structural block diagram of a third base station according to an embodiment of the present invention;

FIG. 11 is a structural block diagram of a fourth base station according to an embodiment of the present invention;

FIG. 12 is a structural block diagram of another base station corresponding to FIG. 11;

FIG. 13 is a structural block diagram of still another base station corresponding to FIG. 11;

Figure 14 is a block diagram showing the structure of another base station corresponding to Figure 11;

FIG. 15 is a structural block diagram of a server according to an embodiment of the present invention;

FIG. 16 is a structural block diagram of a server according to an embodiment of the present invention;

FIG. 17 is a structural block diagram of another server according to an embodiment of the present invention. The above described objects, features and advantages of the embodiments of the present invention will become more apparent and understood. The technical solution is described in further detail.

In the X2-based handover process, the signaling plane connection between the source eNodeB and the target eNodeB is completed by the establishment process of the X2 link; whether the source eNodeB and the target eNodeB belong to the same MME resource pool, and is completed by the X2 configuration update process. .

In the LTE handover, the X2-based handover has the following scenario: The MME in the MME resource pool where the source base station and the target base station are located is abnormal, the S1 link between the MME and the source base station is normal, and the MME and the target base station are normal. The S1 link fails. When the source base station carries the MME identity in the X2 handover request, the target base station returns an X2 handover failure message HANDOVER PREPARATION to the source base station after determining that the S1 link with the MME is faulty. FAILURE, The reason for the failure in the switch failure message is "Unspecified". At present, in the 3GPP protocol, the reason for the handover failure in the scenario of the X2 handover failure of the source base station cannot be implemented, and the source base station cannot learn the link state of the target base station and a certain MME from the configuration update process, because the source base station cannot know the target base station. If the S1 link is abnormal, the switch related to the abnormal S1 link will be initiated on the X2 link, resulting in a reduced handover success rate.

In order to improve the LTE handover efficiency in the above application scenario, the present invention discloses a corresponding communication method and apparatus. Ready.

First, the communication method provided by the present invention will be described. For convenience of description, the source base station is assumed to be the first base station, and the target base station is assumed to be the second base station. As shown in FIG. 1, an embodiment of a communication method provided by the present invention may include the following steps:

Step 101: The first base station acquires information about an S1 link fault of the second base station that is the target base station. Step 102: The first base station determines, according to the related information of the S1 link fault, a handover type or reselects a target base station. .

In the embodiment of the present invention, for the X2-based handover, if an abnormality occurs in the MME resource pool of the first base station that is the source base station and the second base station that is the target base station, the S1 between the MME and the first base station When the link is normal, and the S1 link between the second base station and the second base station is faulty, the first base station can obtain the fault information in time by feeding back the S1 link fault information between the MME and the second base station to the first base station. The type of the handover is determined in time or the target base station is reselected, and the X2 handover related to the faulty S1 link is prevented from being re-initiated to the second base station, so that the scenario in which the X2 handover failure occurs repeatedly is avoided, and the LTE handover efficiency is improved.

In the specific implementation, the information about the S1 link fault may include a switch failure cause, where the switch failure cause includes an S1 link fault information, that is, information that the S1 link fault is carried by the handover failure cause, In the implementation manner, the specific implementation manner of the foregoing step 101 is as shown in FIG. 2:

Step 201: The first base station sends a handover request message HANDOVER REQUEST to the second base station;

Step 202: The first base station receives a response message of the second base station to the handover request message, where the response message includes the handover failure cause, and the handover failure cause includes an S1 link failure information S1 PathError Specifically, the response message may be a handover preparation failure response message HANDOVER PREPARATION FAILURE.

In this implementation manner, after the second base station receives the X2 handover request HANDOVER REQUEST sent by the first base station, if the S1 link between the MME and the MME carried in the handover request is faulty, The second base station feeds back the handover failure message HANDOVER PREPARATION FAILURE, and carries the handover failure reason information SI PathError in the handover failure message HANDOVER PREPARATION FAILURE. The first base station learns the MME and the first according to the received handover failure cause information. The fault state of the S1 link between the two base stations no longer initiates the X2 handover related to the faulty S1 link to the second base station, thereby avoiding the scenario where the repeated X2 handover fails.

The source base station may continue to select other candidate target base stations or by S1 based handover. Now LTE switching.

In this implementation manner, the actual handover failure reason is carried in the handover failure message HANDOVER PREPARATION FAILURE fed back by the second base station to the first base station by modifying the existing 3GPP protocol, so that the source base station can perform the handover failure reason according to the actual handover failure reason. A valid X2 switch.

In addition, the S1 link connection status between the MME and the first base station and the second base station may be monitored by the third-party network element by setting a third-party network element. When the third-party network element detects that the S1 link between the second base station and the MME carried in the handover request fails, the handover failure reason information is fed back to the second base station. The first base station learns the fault state of the S1 link between the MME and the second base station according to the received handover failure cause information, and no longer initiates the X2 handover related to the faulty S1 link to the second base station, thereby Avoid scenes where repeated X2 switching failures occur. In a specific implementation, the third-party network element may be an operation and maintenance network element of the base station.

It should be noted that the information about the S1 link failure may include the information of the MME corresponding to the fault S1 link, and in another implementation manner, the first base station acquires the S1 link fault of the second base station. Information includes:

Receiving, by the first base station, a base station configuration update message sent by the second base station,

CONFIGURATION UPDATE, the base station configuration update message includes information about the MME corresponding to the faulty S1 link, and the base station configuration update message is sent to the first when the second base station detects that the S1 link is faulty Base station.

In this implementation manner, when the configuration of the X2 link changes, that is, when the S1 link between the MME and the second eNB in the first pool of the first base station and the second base station is faulty, The second base station feeds back the X2 link configuration update prompt message eNB CONFIGURATION UPDATE to the first base station, where the X2 link configuration update prompt message carries MME fault indication information, where the MME fault indication information includes: The S1 link between the MME and the first base station is normal, the S1 link between the MME and the second base station is faulty, and the first base station updates the prompt message according to the received X2 link configuration, and learns the MME and the In the fault state of the S1 link between the second base stations, the X2 handover related to the faulty S1 link is no longer initiated to the second base station, so as to avoid a scenario in which the X2 handover failure occurs repeatedly.

The first base station may continue to implement LTE handover by selecting other candidate second base stations or by S1 based handover.

In this implementation manner, by modifying the existing 3GPP protocol, the X2 link configuration update prompt message eNB CONFIGURATION UPDATE fed back to the first base station by the second base station carries the actual handover failure reason, so that the first base station can perform the actual handover according to the actual handover. The reason for the failure, re-execute a valid X2 switch. The base station configuration update message includes one or all of the following information:

The information of the MME includes a Globally Unique MME Identity (GUMMED or MME code, MMEC) of the MME.

In addition, a third-party network element may be set, and the third-party network element monitors the S1 between the MME in the first pool of the first base station and the second base station, and the first base station and the second base station, respectively. Link connection status. When the third-party network element detects that the S1 link between a certain MME and the second base station in the first pool of the MME fails, the X2 link configuration update prompt message is fed back to the second base station. The first base station learns the fault message of the S1 link between the MME and the second base station according to the received X2 link configuration update prompt message, and no longer initiates the fault with the faulty S1 link to the second base station. The X2 switchover avoids the occurrence of repeated X2 handover failure scenarios. In a specific implementation, the third-party network element may be an operation maintenance network element of the base station. As shown in FIG. 3, another embodiment of the communication method provided by the present invention may include the following steps:

Step 301: The second base station monitors the state of the S1 link between the second base station and the MME. Step 302: When the S1 link is faulty, the second base station sends a fault to the first base station.

Information about the MME corresponding to the S1 link.

In the embodiment of the present invention, when a certain base station (second base station) finds an S1 link failure between an MME connected thereto, the S1 link is fed back to the neighboring base station (the first base station). Corresponding MME information. Therefore, the first base station can know that the S1 link corresponding to a certain MME of the second base station is faulty. Therefore, when there is a user equipment in the first base station that needs to be handed over to the second base station, it may be known in advance which S1 link is faulty, and avoid initiating X2 handover related to the faulty S1 link to the second base station, thereby reducing occurrence of X2 handover. The failed scenario improves the efficiency of LTE handover.

In a specific implementation, the second base station sends the information of the MME corresponding to the faulty S1 link to the first base station by using a base station configuration update message.

The base station configuration update message includes one or all of the following information:

The information of the MME includes GUMMEI or MMEC of the MME.

In another embodiment, as shown in FIG. 4, when the user equipment under the first base station needs to switch to the second base station, and the second base station sends the fault to the first base station Before the information of the MME corresponding to the S1 link, the following steps may also be included:

Step 303: The second base station receives a handover request message sent by the first base station.

Step 304: The second base station sends a response message of the handover request message to the first base station, where the response message includes a handover failure cause, and the handover failure cause includes information of the S1 link failure.

Specifically, the response message includes a handover preparation failure response message.

In the embodiment shown in Figure 4, one possible implementation of a particular implementation is described. In this implementation manner, before the second base station sends the information of the MME corresponding to the faulty S1 link to the first base station, the first base station initiates an X2 handover request. Sending, by the second base station, a response message of the handover request message to the first base station, where the second base station detects the S1 link failure, the response message includes a handover failure cause, and the handover failure cause includes the S1 link failure information. As shown in FIG. 5, another embodiment of the communication method provided by the present invention may include the following steps:

Step 501: The first base station receives the information of the MME sent by the second base station, and the S1 link between the MME and the second base station is faulty.

Step 502: When the first base station correctly receives the information of the MME, send an acknowledgement message to the second base station.

In the embodiment of the present invention, when the first base station receives the information of the MME corresponding to the faulty S1 link fed back by the second base station, the first base station may know the S1 chain corresponding to a certain MME of the second base station. Road failure. Therefore, when there is a user equipment in the first base station that needs to be handed over to the second base station, it may be known in advance which S1 link is faulty, and avoid initiating the X2 handover related to the faulty S1 link to the second base station again, thereby avoiding duplication. The scenario where the X2 handover fails occurs, and the LTE handover efficiency is improved.

Specifically, the first base station receives the information of the MME by using a base station configuration update message sent by the second base station.

The base station configuration update message includes one or all of the following information: Deleting the information of the MME, including the information of the MME corresponding to the faulty S1 link in the S1 link between the second base station and all the MMEs connected thereto;

The information of the MME includes GUMMEI or MMEC of the MME.

In another embodiment, as shown in FIG. 6, after the first base station receives the information of the MME, when the user equipment under the first base station needs to switch to the second base station, the method Also includes:

Step 503: The first base station determines, according to the information of the MME, a handover type or reselects a target base station.

In this embodiment, when the first base station learns the fault state of the S1 link between the certain MME and the second base station, the X2 handover related to the faulty S1 link is no longer initiated to the second base station, but the handover is determined. Type or reselect the target base station to avoid scenarios where repeated X2 handover failures occur.

In addition, in another embodiment, as shown in FIG. 7, before the first base station receives the information of the MME, when the user equipment under the first base station needs to switch to the second base station, The method further includes: Step 504: The first base station sends a handover request message to the second base station;

Step 505: The first base station receives a response message of the handover request message sent by the second base station, where the response message includes a handover failure cause, and the handover failure cause includes information of the S1 link failure.

In the embodiment shown in Figure 7, one possible implementation of a particular implementation is described. In this implementation manner, before the second base station sends the information of the MME corresponding to the faulty S1 link to the first base station, the first base station initiates an X2 handover request. Sending, by the second base station, a response message of the handover request message to the first base station, where the second base station detects the S1 link failure, the response message includes a handover failure cause, and the handover failure cause includes the S1 link failure information. Corresponding to the above method embodiments, the present invention provides a base station. As shown in FIG. 8, the base station may specifically include:

The fault obtaining module 801 is configured to acquire information about an S1 link fault of the target base station.

The first processing module 802 is configured to determine a handover type or reselect a target base station according to the related information of the S1 link failure.

In the embodiment of the present invention, for the X2-based handover, if the base station and the target base station as the source base station are located

An MME in the MME resource pool is abnormal, and the S1 link between the MME and the source base station is normal. When the SI link with the target base station fails, the S1 link fault information between the MME and the target base station is fed back to the source base station, so that the source base station can obtain the fault information in time, determine the handover type or reselect the target base station in time. The X2 handover related to the faulty S1 link is re-initiated to the target base station, so as to avoid the scenario where the X2 handover fails repeatedly, and the LTE handover efficiency is improved.

It should be noted that the information about the fault of the S1 link includes the cause of the handover failure, where the cause of the switch failure includes the information of the S1 link fault, and the fault acquisition module may include:

The response message is a handover preparation failure response message.

In addition, the related information of the S1 link fault includes the information of the MME corresponding to the faulty S1 link, and the fault acquiring module may include:

a second receiving unit, configured to receive a base station configuration update message sent by the target base station, where the base station configuration update message includes information about a mobility management entity MME corresponding to the faulty S1 link, and the base station configuration update message is The target base station detects that the S1 link is faulty.

The information of the MME includes GUMMEI or MMEC of the MME. Corresponding to the above method embodiments, the present invention provides a base station. As shown in FIG. 9, the base station may specifically include:

a monitoring module 901, configured to monitor a status of an S1 link with the MME;

The fault sending module 902 is configured to: when the S1 link fault is detected, send information about the MME corresponding to the faulty S1 link to the neighboring base station.

In the embodiment of the present invention, when a certain base station finds that the S1 link between the MMEs connected to it is faulty, the information about the MME corresponding to the faulty S1 link is fed back to the neighboring base station. Therefore, the neighboring base station can know the S1 link failure corresponding to a certain MME of the base station. Therefore, when a user equipment needs to be handed over to the base station in the neighboring base station, it can know in advance which S1 link is faulty, and avoid repeated occurrence of X2 handover failure. The scenario improves the efficiency of LTE handover.

It should be noted that the fault sending module sends the information of the MME corresponding to the faulty S1 link to the neighboring base station by using the base station configuration update message.

The information of the MME includes GUMMEI or MMEC of the MME.

In addition, in the embodiment of another base station provided by the present invention, as shown in FIG. 10, the base station may further include:

a request receiving module 903, configured to receive a handover request message sent by the neighboring base station;

The response sending module 904 is configured to send a response message of the handover request message to the neighboring base station, where the response message includes a handover failure cause, and the handover failure cause includes information of the S1 link failure.

Specifically, the response message includes a handover preparation failure response message. Corresponding to the above method embodiments, the present invention provides another base station. As shown in FIG. 11, the first base station may specifically include:

The third receiving module 1101 is configured to receive information about an MME sent by a neighboring base station, where an S1 link between the MME and the neighboring base station is faulty;

The acknowledgment module 1102 is configured to send an acknowledgment message to the neighboring base station when the information of the MME is correctly received.

In the embodiment of the present invention, when a certain base station receives the information of the MME corresponding to the faulty S1 link fed back by the neighboring base station, the base station can know the S1 link fault corresponding to a certain MME of the neighboring base station. Therefore, when there is a user equipment in the base station that needs to be handed over to the neighboring base station, it may be known in advance which S1 link is faulty, thereby avoiding initiating the X2 handover related to the faulty S1 link to the neighboring base station again, thereby avoiding recurrence. The scenario where the X2 switch fails, and the LTE switching efficiency is improved.

The third receiving module receives the information of the MME by using a base station configuration update message sent by the neighboring base station.

Deleting the information of the MME, including the S1 link between the neighboring base station and all MMEs connected thereto The information of the MME corresponding to the failed SI link;

The information of the MME includes GUMMEI or MMEC of the MME.

In another embodiment, as shown in FIG. 12, the base station may further include:

The second processing module 1103 is configured to: after receiving the information of the MME, when the user equipment under the base station needs to switch to the neighboring base station, determine, according to information of the MME, a handover type or reselect a target base station. .

In another embodiment, as shown in FIG. 13, the base station may further include:

The second requesting module 1104 is configured to: before the base station receives the information about the MME, when the user equipment under the base station needs to switch to the neighboring base station, send a handover request message to the neighboring base station;

The second receiving module 1105 is configured to receive a response message of the handover request message sent by the neighboring base station, where the response message includes a handover failure cause, and the handover failure cause includes the information of the S1 link failure.

As shown in FIG. 14, the base station may further include:

The third processing module 1106 is configured to determine a handover type or reselect a target base station according to the information about the S1 link failure in the handover failure reason.

Specifically, the response message includes a handover preparation failure response message. As shown in FIG. 15, the present invention further provides a server for implementing a base station function based on a computer system. In a specific implementation, the server of the embodiment of the present invention may include: a first processor 1501, a first memory 1502, a bus 1503, and a communication. The first memory 1502 is configured to store a computer execution instruction, the first processor 1501 is connected to the first memory 1502 through the bus, and when the server is running, the first processor 1501 Executing the computer execution instructions stored by the first memory 1502 and communicating with devices external to the server through the communication interface 1504 to cause the server to perform the communication method illustrated in FIGS. 1 and 2. As shown in FIG. 16, the present invention further provides a server for implementing a function of a second base station based on a computer system. In a specific implementation, the server of the embodiment of the present invention may include: a second processor 1601, a second memory 1602, and a bus 1603. And a communication interface 1604; the second memory 1602 is configured to store a computer execution instruction, and the second processor 1601 is connected to the second memory 1602 via the bus 1603, when the server is shipped In the row, the second processor 1601 executes the computer execution instruction stored by the second memory 1602, and communicates with a device external to the server through the communication interface 1604, so that the server executes FIG. And the communication method shown in FIG. As shown in FIG. 17, the present invention further provides a server for implementing a function of a first base station based on a computer system. In a specific implementation, the server of the embodiment of the present invention may include: a third processor 1701, a third memory 1702, and a bus 1703. And a communication interface 1704; the third memory 1702 is configured to store a computer execution instruction, the third processor 1701 is connected to the third memory 1702 via the bus 1703, and when the server is running, the third The processor 1701 executes the computer execution instructions stored by the third memory 1702, and communicates with devices external to the server through the communication interface 1704 to cause the server to execute the communication method illustrated in FIGS. 5-7. . The server may be a base station, and each processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or the like.

One of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A communication method, comprising:

The first base station acquires information about an S1 link failure of the second base station as the target base station; and the first base station determines the handover type or reselects the target base station according to the information about the S1 link failure.

The method according to claim 1, wherein the information related to the S1 link failure includes a handover failure cause, wherein the handover failure cause includes information of an S1 link failure, and the first base station Obtaining information about an S1 link fault of the second base station that is the target base station, including:

3. The method according to claim 2, wherein the response message is a handover preparation failure response message.

The method according to any one of claims 1 to 3, wherein the information related to the S1 link failure includes information of a mobility management entity MME corresponding to the fault S1 link, and the first The information about the base station acquiring the S1 link fault of the second base station includes:

5. The method according to claim 4, wherein the base station configuration update message includes one or all of the following information:

The method according to claim 4 or 5, wherein the information of the MME comprises GUMMEI or MMEC of the MME.

7. A base station, comprising:

a first processing module, configured to determine, according to the information about the S1 link fault, a handover type or Reselect the target base station.

The base station according to claim 7, wherein the information about the S1 link failure includes a handover failure cause, wherein the handover failure cause includes an S1 link failure information, and the fault acquisition module Includes:

The base station according to claim 8, wherein the response message is a handover preparation failure response message.

The base station according to any one of claims 7 to 9, wherein the information about the S1 link failure includes the information of the MME corresponding to the faulty S1 link, and the fault acquisition module includes:

The base station according to claim 10, wherein the base station configuration update message includes one or all of the following information:

The information of the MME is updated, and the information of the MME corresponding to the normal S1 link is restored in the S1 link between the target base station and all the MMEs connected thereto.

The base station according to claim 10 or 11, wherein the information of the MME comprises a GUMMEI or an MMEC of the MME.

13. A server, comprising: a first processor, a first memory, a bus, and a communication interface; the first memory is configured to store a computer execution instruction, the first processor and the first memory Through the bus connection, when the server is running, the first processor executes the computer execution instruction stored in the first memory, and communicates with a device external to the server through the communication interface, The server is caused to perform the communication method according to any one of claims 1-6.

14. A computer program product comprising a computer readable medium, the computer readable medium comprising A set of program code for performing the method of any of claims 1-6.