CN109526013B - Link failure processing method and device, base station and computer readable storage medium - Google Patents

Link failure processing method and device, base station and computer readable storage medium Download PDF

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CN109526013B
CN109526013B CN201710841883.2A CN201710841883A CN109526013B CN 109526013 B CN109526013 B CN 109526013B CN 201710841883 A CN201710841883 A CN 201710841883A CN 109526013 B CN109526013 B CN 109526013B
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link
data
failure
multicast
target
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CN109526013A (en
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王玮
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

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Abstract

The embodiment of the invention provides a link failure processing method, a device, a base station and a computer readable storage medium, which are used for judging whether a main M2 link fails or not in the process of using the main M2 link to transmit data; if yes, selecting one link from at least one standby M2 link as a target primary M2 link, and activating the target primary M2 link; transmitting data on the target main M2 link according to a preset rule; wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface; by adopting the scheme, in the process of transmitting data by using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, so that the reliability of the wireless multicast or broadcast system is improved, and the phenomenon that the whole wireless side multicast or broadcast service is disobeyed due to the failure of the active M2 link is avoided.

Description

Link failure processing method and device, base station and computer readable storage medium
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for processing a link failure, a base station, and a computer-readable storage medium.
Background
LTE (Long Term Evolution) technology is the latest Evolution of cellular technology in terms of radio access, pursued by the 3rd Generation Partnership Project (3 GPP) organization. The LTE system is widely accepted and rapidly popularized by operators and equipment manufacturers due to its great advantages in reducing time delay, increasing user transmission data rate, increasing system capacity and coverage, and reducing operation cost. With increasing Multimedia application requirements, eMBMS (Evolved Multimedia Broadcast Multicast Service) services under the LTE technical framework are increasingly showing their unique application values.
Referring to fig. 1, fig. 1 is a system architecture diagram of an eMBMS provided in the prior art, where the eMBMS system architecture includes: BMSC (Broadcast Multicast Service Center), MBMS-GW (Multimedia Broadcast Multicast Service GateWay), MCE (Multi-cell or Multicast Coordination Entity), S-GW (Serving GateWay), P-GW (PDN GateWay), MME (Mobility Management Entity), eNB (evolved Node B), base station, UE (User Equipment), CP (Content Provider), etc.;
the MME is connected with the MCE through an M3 interface; the eNB and the MCE are connected through an M2 interface and form an M2 link, and in the process of transmitting data by using the M2 link, if the M2 link fails, the whole multicast or broadcast service on the wireless side is taken off.
Disclosure of Invention
Embodiments of the present invention mainly solve the technical problem of providing a method, an apparatus, a base station, and a computer-readable storage medium for processing a link failure, so as to solve the problem in the prior art that, in a process of transmitting data using an existing M2 link, if an M2 link fails, the service of a multicast or broadcast service on the entire wireless side is lost.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for processing a link failure, including:
in the process of using the main M2 link to transmit data, judging whether the main M2 link fails;
if yes, selecting one link from at least one standby M2 link as a target primary M2 link, and activating the target primary M2 link;
transmitting data on a target main M2 link according to a preset rule;
wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface.
To solve the foregoing technical problem, an embodiment of the present invention provides a device for processing a link failure, including:
the judging module is used for judging whether the primary M2 link fails or not in the process of using the primary M2 link to transmit data;
an activation module, configured to select one of the at least one standby M2 link as a target primary M2 link if the determination module determines that the primary M2 link fails, and activate the target primary M2 link;
the transmission module is used for transmitting data on the target main M2 link according to a preset rule;
wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface. Processing system for link failure
To solve the foregoing technical problem, an embodiment of the present invention provides a base station, where the base station includes a processor and a memory;
the processor is used for executing one or more programs stored in the memory to realize the steps of the processing method of the link failure;
the memory is coupled to the processor.
In order to solve the above technical problem, an embodiment of the present invention further provides a computer storage medium, where computer-executable instructions are stored in the computer storage medium, and the computer-executable instructions are used to execute the foregoing link failure processing method.
The invention has the beneficial effects that:
according to the link failure processing method, the link failure processing device, the base station and the computer-readable storage medium provided by the embodiment of the invention, in the process of using the master M2 link to transmit data, whether the master M2 link fails or not is judged; if yes, selecting one link from at least one standby M2 link as a target primary M2 link, and activating the target primary M2 link; transmitting data on a target main M2 link according to a preset rule; wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface; by adopting the scheme, in the process of transmitting data by using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, so that the reliability of the wireless multicast or broadcast system is improved, and the phenomenon that the whole wireless side multicast or broadcast service is disobeyed due to the failure of the active M2 link is avoided.
Additional features and corresponding advantages of the invention are set forth in the description which follows, and it is understood that at least some of the advantages will be apparent from the description of the invention.
Drawings
Fig. 1 is a system architecture diagram of an eMBMS provided in the prior art;
fig. 2 is a flowchart of a method for processing a link failure according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating that MCEs are connected to the same MME according to the first and second embodiments of the present invention;
fig. 4 is a schematic diagram illustrating that each MCE is connected to a different MME according to the first and second embodiments of the present invention;
fig. 5 is a timing diagram of signaling interaction of an eMBMS system according to the first embodiment and the second embodiment of the present invention;
fig. 6 is a schematic diagram of a system for processing a link failure according to a second embodiment of the present invention;
fig. 7 is a schematic diagram of another link failure processing system according to the second embodiment of the present invention;
fig. 8 is a schematic diagram of a processing apparatus for M2 link failure according to a third embodiment of the present invention;
fig. 9 is a schematic diagram of another processing apparatus for M2 link failure according to a third embodiment of the present invention;
fig. 10 is a schematic diagram of a base station according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
In the process of transmitting data by using the M2 link, to avoid the problem that the multicast or broadcast service on the whole wireless side is taken back due to the failure of the M2 link, the present embodiment provides a method for processing a link failure, please refer to fig. 2, where fig. 2 is a flowchart of a method for processing a link failure provided by the present embodiment, and the method includes the following steps:
s201: in the process of using the main M2 link to transmit data, judging whether the main M2 link fails; if yes, entering S202; if not, entering S204;
the reasons for the failure of the M2 link include, but are not limited to, a failure of the M2 physical link, a failure of the MCE network element, and a failure of the MCE link interface board.
If the primary M2 link fails, data transmission and service interruption may result.
Optionally, the executing main body of the S201 is an eNB, that is, in the process of transmitting data by using the active M2 link, the eNB determines whether the active M2 link fails.
The MCE is responsible for allocating time-frequency resources to eMBMS transmission, and scheduling of an air interface, eMBMS session management, wireless configuration (time-frequency resources, modulation and coding modes) and the like are completed.
Optionally, before S201, the method further includes the following steps:
establishing each M2 link; one M2 link in the M2 links is used as a main M2 link, and the rest are used as standby M2 links;
specifically, the same eNB may establish multiple M2 links with the MCE; the eNB receives link configuration of each M2 through a configuration tool, and each link is distinguished through a link ID and an opposite end IP address;
the same eNB and MCE corresponding to each M2 link are respectively linked, data are only received and transmitted on the main M2 link in a normal stable operation state, and the standby M2 link is only in a link establishment state;
shielding the sending of the downlink data on the standby M2 link;
the shielded downlink data comprises signaling and user data;
if the transmission of downlink data is not shielded on the standby M2 link, interference is caused to the eNB; the eNB works normally only with one active M2 link.
S202: selecting one link from at least one standby M2 link as a target main M2 link, and activating the target main M2 link;
the eNB selects a standby M2 link as the target primary M2 link, and how to select a standby M2 link is decided by the eNB.
After the target primary M2 link is selected, the target primary M2 link is activated by the eNB through the cooperation of the MCE connected to the target primary M2 link.
S203: transmitting data on the target main M2 link according to a preset rule;
data transmitted on the M2 link is management data, and when the M2 link fails in the process of transmitting the management data by using the active M2 link, the management data is discarded, and the subsequent management data is switched to the target active M2 link for transmission.
S203 includes: triggering data to be transmitted on a target main M2 link according to multicast service scheduling information, wherein the multicast service scheduling information is generated according to service resource scheduling information when the main M2 link fails and the overall wireless resource use condition of the MCE corresponding to the target main M2 link;
the eNB schedules resources to complete multicast or broadcast service processing according to the multicast service scheduling information sent by the target master M2 link, so that the service can continue;
the service resource scheduling information when the main M2 link fails includes service information such as PMCH (Physical Multicast Channel) service information, MBSFN (Multicast Single Frequency Network) information, Multicast subframe ratio and the like when the main M2 link is interrupted.
Wherein, each M2 link is a link formed by connecting the same eNB and each MCE by adopting an M2 interface; the M2 interface is a signaling interface between the eNB and the MCE, and is mainly used for transmitting control signaling required for developing broadcast multicast service in a multi-cell transmission mode.
The connection mode of the MCE and the MME comprises any one of the following two modes:
the first method is as follows: each MCE is connected to the same MME, which belongs to an EPC (Evolved Packet Core); referring to fig. 3, fig. 3 is a schematic diagram illustrating that MCEs are connected to the same MME according to this embodiment;
the second method comprises the following steps: each MCE is connected to an MME of a different EPC; referring to fig. 4, fig. 4 is a schematic diagram illustrating that each MCE is connected to a different MME according to this embodiment;
and the MME is connected with the MCE through an M3 interface.
The MCE in fig. 3 and 4 is deployed in a distributed manner integrated with the eNB in the 3GPP (3rd Generation Partnership Project) protocol definition, and it should be understood that the MCE may also be deployed in a centralized manner in the 3GPP protocol definition. Neither of these two deployments is restricted to actual physical connections.
Optionally, after S203, the method further includes the following steps:
and informing the MME, the MBMS-GW and the BMSC connected with the MCE on the target master M2 link, and changing the MCE corresponding to the eNB service.
The BMSC is responsible for providing and transmitting the eMBMS user service, is responsible for authorizing a user requesting to join the eMBMS service, and initiates an eMBMS bearer service in a mobile network;
the MBMS-GW is used for sending MBMS data to each eNB in an IP multicast mode, allocating an IP multicast address to the eNB which is to be added and receive the eMBMS data, and sending an eMBMS session control signaling to the eNB through the MME to conduct eMBMS session management.
Optionally, after S203, the method further includes the following steps:
judging whether the fault of the main M2 link in the S201 is recovered;
if yes, setting the active M2 link as a standby M2 link, and shielding the sending of downlink data on the active M2 link;
specifically, when the eNB detects that the failed M2 link is recovered, the eNB sends an uplink signaling message error indication on the recovered M2 link, where the message carries failure content, and the failure content includes that the link is a standby M2 link; after receiving the error indication sent by the eNB, the MCE deactivates the M2 link connected to the MCE and masks the sending of its downlink data, including signaling and user data.
Referring to fig. 5, fig. 5 is a timing diagram of signaling interaction of an eMBMS system according to this embodiment;
the first step is as follows: in the process of using the main M2 link to transmit data, the eNB detects that the main M2 link fails;
the second step is that: the eNB selects one standby M2 link as a target master M2 link, and sends an uplink signaling message error indication to an MCE corresponding to the target master M2 link, wherein the message carries information of the target master M2 link and a fault reason, and the fault reason is a fault of a working link;
the third step: after receiving the uplink signaling message error indication of the eNB and analyzing the fault reason, the MCE corresponding to the target master M2 link activates the target master M2 link;
the fourth step: the eNB sends an uplink signaling message site configuration update to an MCE corresponding to a target master M2 link, wherein the message carries service information such as PMCH service information, MBSFN information, subframe ratio and the like when the link is interrupted;
the fifth step: after receiving the site configuration update of the uplink signaling message of the eNB, the MCE corresponding to the target master M2 link responds a site configuration update confirmation message to the eNB;
and a sixth step: the MCE corresponding to the target master M2 link generates multicast service scheduling information according to the site configuration update of the uplink signaling message sent by the eNB in the fourth step, and by combining the use condition of the whole wireless resource of the MCE, and sends the multicast service scheduling information to the eNB;
the seventh step: after receiving the multicast service scheduling information, the eNB schedules resources according to the content of the message to complete multicast or broadcast service processing so that the service can be continued; responding to the multicast service scheduling information response to the MCE;
the eighth step: MCE sends a multicast session update request message to MME, wherein the message carries MCE equipment identification and service information;
the ninth step: after receiving the multicast session updating request message, the MME responds a multicast session updating confirmation message to the MCE;
the tenth step: MME sends a multicast session update request message to MBMS-GW to inform MCE equipment change;
the eleventh step: after receiving the multicast session update request message, the MBMS-GW updates the local database and responds a multicast session update confirmation message to the MME;
the twelfth step: MBMS-GW sends a multicast session update request message to BMSC, and informs MCE equipment to change;
the thirteenth step: after receiving the request message of multicast session update, BMSC updates the service information and the equipment information and responds the confirmation message of multicast session update to MBMS-GW.
S204: and (6) ending.
According to the method for processing the link failure provided by the embodiment, in the process of transmitting data by using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, and a plurality of MCEs in the system can mutually play a role of redundant backup, so that the reliability of the wireless multicast or broadcast system is improved, and the phenomenon that the multicast or broadcast service of the whole wireless side is disqualified due to the failure of the active M2 link is avoided.
Example two
In the process of transmitting data by using the M2 link, to avoid the problem that the multicast or broadcast service on the whole wireless side is taken back due to the failure of the M2 link, this embodiment provides a processing system for a link failure, please refer to fig. 6, where fig. 6 is a schematic diagram of the processing system for a link failure provided in this embodiment, and the processing system for a link failure includes: an eNB601, and at least two MCEs 602;
the eNB601 is configured to determine whether the active M2 link fails in a process of transmitting data using the active M2 link; if yes, selecting one link from the at least one standby M2 link as a target master M2 link, and activating the target master M2 link through the cooperation of the MCE602 connected with the target master M2 link; transmitting data on a target main M2 link according to a preset rule; wherein, each M2 link is a link formed by connecting the same eNB601 and each MCE602 by using an M2 interface;
at least two MCEs 602 configured to communicate data with the enbs using respective M2 links.
Data transmitted on the M2 link is management data, and when the M2 link fails in the process of transmitting the management data by using the active M2 link, the management data is discarded, and the subsequent management data is switched to the target active M2 link for transmission.
The MCE602 is responsible for allocating time-frequency resources to eMBMS transmission, and completing scheduling of an air interface, eMBMS session management, radio configuration (time-frequency resources, modulation and coding scheme), and the like.
The reasons for the failure of the M2 link include, but are not limited to, a failure of the M2 physical link, a failure of a network element of the MCE602, and a failure of a link interface board of the MCE 602.
If the primary M2 link fails, data transmission and service interruption may result.
The M2 interface is a signaling interface between the eNB and the MCE, and is mainly used for transmitting control signaling required for developing broadcast multicast service in a multi-cell transmission mode.
Optionally, the eNB601 is further configured to establish each M2 link before determining whether the active M2 link fails in a process of transmitting data using the active M2 link; one M2 link in the M2 links is used as a main M2 link, and the rest are used as standby M2 links;
specifically, the same eNB601 may establish multiple M2 links with the MCE 602; the eNB601 receives link configuration of each M2 through a configuration tool, and each link is distinguished through a link ID and an opposite end IP address;
the same eNB601 and the MCE602 corresponding to each M2 link are respectively linked, data is only transmitted and received on the active M2 link in a normal stable operation state, and the standby M2 link is only in a link establishment state;
the MCE602 corresponding to the standby M2 link is further configured to shield the transmission of the downlink data on the standby M2 link;
the shielded downlink data comprises signaling and user data;
if the transmission of downlink data is not shielded on the standby M2 link, interference may be caused to eNB 601; the eNB601 works normally only with one active M2 link.
The selection of a standby M2 link by the eNB601 as the target primary M2 link, and how to select a standby M2 link is determined by the eNB 601.
The eNB601 is specifically configured to trigger data to be transmitted on the target master M2 link according to multicast service scheduling information, where the multicast service scheduling information is generated according to service resource scheduling information when the master M2 link fails and an overall wireless resource usage of the MCE602 corresponding to the target master M2 link;
the eNB601 schedules resources to complete multicast or broadcast service processing according to the multicast service scheduling information sent by the target master M2 link, so that the service can continue;
the service resource scheduling information when the active M2 link fails includes service information such as PMCH service information, MBSFN information, multicast subframe ratio and the like when the active M2 link is interrupted.
Optionally, referring to fig. 7, fig. 7 is a schematic diagram of another processing system for link failure provided in this embodiment, where the system further includes: MME603, MBMS-GW604 and BMSC 605;
the eNB601 is further configured to notify the MME603, the MBMS-GW604, and the BMSC605 connected to the MCE602 on the target master M2 link after transmitting data on the target master M2 link according to a preset rule, so that the MCE602 corresponding to the eNB601 service is changed.
The BMSC605 is responsible for providing and transmitting eMBMS user services, is responsible for authorizing users who request to join the eMBMS services, and initiates eMBMS bearer services in the mobile network;
the MBMS-GW604 is configured to send MBMS data to each eNB601 using IP multicast, allocate an IP multicast address to the eNB601 to be joined and receive eMBMS data, and send eMBMS session control signaling to the eNB601 through the MME603 to perform eMBMS session management.
The connection mode of the MCE602 and the MME603 includes any one of the following two types:
the first method is as follows: each MCE602 is connected to the same MME603, and the MME603 belongs to one EPC; referring to fig. 3, fig. 3 is a schematic diagram illustrating that each MCE602 is connected to the same MME603 according to this embodiment;
the second method comprises the following steps: each MCE602 is connected to an MME603 of a different EPC; referring to fig. 4, fig. 4 is a schematic diagram illustrating that each MCE602 is connected to a different MME603 according to this embodiment;
the MME603 is connected to the MCE602 through an M3 interface.
The MCE602 in fig. 3 and fig. 4 is deployed in a distributed manner integrated with an eNB in the 3GPP protocol definition, and it should be understood that the MCE602 may also be deployed in a centralized manner in the 3GPP protocol definition. Neither of these two deployments is restricted to actual physical connections.
Optionally, the eNB601 is further configured to determine whether the failure of the primary M2 link is recovered after data is transmitted on the target primary M2 link according to a preset rule; if yes, setting the main M2 link as a standby M2 link;
the MCE602 corresponding to the active M2 link is further configured to shield sending of downlink data on the active M2 link;
specifically, when the eNB601 detects that the failed M2 link is recovered, an uplink signaling message error indication is sent on the recovered M2 link, where the message carries failure content, and the failure content includes that the link is a standby M2 link; after receiving the error indication sent by the eNB601, the MCE602 deactivates the M2 link connected thereto, and masks its downlink data transmission, including signaling and user data.
Referring to fig. 5, fig. 5 is a timing diagram of signaling interaction of an eMBMS system according to this embodiment;
the first step is as follows: in the process of using the active M2 link to transmit data, the eNB601 detects that the active M2 link fails;
the second step is that: the eNB601 selects one standby M2 link as a target master M2 link, and sends an uplink signaling message error indication to the MCE602 corresponding to the target master M2 link, wherein the message carries information of the target master M2 link and a failure reason, and the failure reason is a failure of a working link;
the third step: after receiving the uplink signaling message error indication of the eNB601 and analyzing the failure reason, the MCE602 corresponding to the target master M2 link activates the target master M2 link;
the fourth step: the eNB601 sends an uplink signaling message site configuration update to the MCE602 corresponding to the target master M2 link, where the message carries service information such as PMCH service information, MBSFN information, and subframe ratio when the link is interrupted;
the fifth step: after receiving the site configuration update of the uplink signaling message of the eNB, the MCE602 corresponding to the target master M2 link responds a site configuration update confirmation message to the eNB 601;
and a sixth step: the MCE602 corresponding to the target master M2 link generates multicast service scheduling information according to the site configuration update of the uplink signaling message sent by the eNB601 in the fourth step, and by combining the use condition of the whole wireless resource of the MCE, and sends the multicast service scheduling information to the eNB 601;
the seventh step: after receiving the multicast service scheduling information, the eNB601 finishes processing the multicast or broadcast service according to the message content scheduling resource, so that the service can continue; meanwhile, responding to the multicast service scheduling information response to the MCE 602;
eighth step: the MCE602 sends a multicast session update request message to the MME603, where the message carries an MCE device identifier and service information;
the ninth step: after receiving the multicast session update request message, the MME603 responds to the MCE602 with a multicast session update confirmation message;
the tenth step: MME603 sends a multicast session update request message to MBMS-GW604, and informs MCE602 of equipment change;
the eleventh step: after receiving the multicast session update request message, the MBMS-GW604 updates the local database and responds a multicast session update confirmation message to the MME 603;
the twelfth step: the MBMS-GW604 sends a multicast session update request message to the BMSC605 to inform the MCE602 of equipment change;
the thirteenth step: after receiving the multicast session update request message, the BMSC605 updates the service information and the device information, and responds a multicast session update confirmation message to the MBMS-GW 604.
According to the processing system for the link failure provided by the embodiment, in the process of transmitting data by using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, and the multiple MCEs 602 in the system can mutually play a role of redundant backup, so that the reliability of the wireless multicast or broadcast system is improved, and the phenomenon that the whole wireless side multicast or broadcast service is disqualified due to the failure of the active M2 link is avoided.
EXAMPLE III
In the process of transmitting data by using the M2 link, to avoid the problem that the multicast or broadcast service on the whole wireless side is taken back due to the failure of the M2 link, the present embodiment provides a processing apparatus for a link failure, please refer to fig. 8, where fig. 8 is a schematic diagram of the processing apparatus for a link failure provided in the present embodiment, and the processing apparatus for a link failure includes: a decision block 801, an activation block 802, and a transmission block 803, wherein,
a determining module 801, configured to determine whether a primary M2 link fails in a process of transmitting data using the primary M2 link;
the reasons for the failure of the M2 link include, but are not limited to, a failure of the M2 physical link, a failure of an MCE network element, and a failure of an MCE link interface board.
If the primary M2 link fails, data transmission and service interruption may result.
The MCE is responsible for allocating time-frequency resources to eMBMS transmission, and scheduling of an air interface, eMBMS session management, wireless configuration (time-frequency resources, modulation and coding modes) and the like are completed.
Optionally, referring to fig. 9, fig. 9 is a schematic diagram of another link failure processing apparatus provided in this embodiment, where the link failure processing apparatus further includes: an establishment module 804, a determination module 805, and a masking module 806,
the establishing module 804 is configured to establish each M2 link before the determining module 801 determines whether the primary M2 link fails;
the determining module 805 is configured to determine one M2 link of the M2 links as an active M2 link, and the rest are all standby M2 links;
specifically, the same eNB may establish multiple M2 links with the MCE; receiving the configuration of each M2 link through a configuration tool, wherein each link is distinguished through a link ID and an opposite terminal IP address;
the same eNB and the MCE corresponding to each M2 link are respectively linked, data are only transmitted and received on the main M2 link in a normal and stable operation state, and the standby M2 link is only in a link establishment state;
the shielding module 806 is configured to shield sending of the downstream data on the standby M2 link;
the shielded downlink data comprises signaling and user data;
if the transmission of downlink data is not shielded on the standby M2 link, interference may be caused to the eNB; the eNB works normally only with one active M2 link.
An activating module 802, configured to select one of the at least one standby M2 link as a target active M2 link if the determining module 801 determines that the active M2 link fails, and activate the target active M2 link;
the activation module 802 selects a standby M2 link as the target primary M2 link, and how to select a standby M2 link is determined by the activation module 802.
After the target master M2 link is selected, the target master M2 link is activated by the activation module 802 through the cooperation of the MCE connected to the target master M2 link.
A transmission module 803, configured to transmit data on the target master M2 link according to a preset rule; wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface.
Data transmitted on the M2 link is management data, and when the M2 link fails in the process of transmitting the management data by using the active M2 link, the management data is discarded, and the subsequent management data is switched to the target active M2 link for transmission.
The transmission module 803 is specifically configured to trigger data to be transmitted on the target master M2 link according to multicast service scheduling information, where the multicast service scheduling information is generated according to service resource scheduling information when the master M2 link fails and an overall wireless resource usage of an MCE corresponding to the target master M2 link;
according to the multicast service scheduling information sent by the target master M2 link, scheduling resources to complete multicast or broadcast service processing, so that the service can continue;
the service resource scheduling information when the active M2 link fails includes service information such as PMCH service information, MBSFN information, multicast subframe ratio and the like when the active M2 link is interrupted.
The M2 interface is a signaling interface between the eNB and the MCE, and is mainly used for transmitting control signaling required for developing broadcast multicast service in a multi-cell transmission mode.
The connection mode of the MCE and the MME comprises any one of the following two modes:
the first method is as follows: each MCE is connected to the same MME which belongs to one EPC; referring to fig. 3, fig. 3 is a schematic diagram illustrating that MCEs are connected to the same MME according to this embodiment;
the second method comprises the following steps: each MCE is connected to an MME of a different EPC; referring to fig. 4, fig. 4 is a schematic diagram illustrating that each MCE is connected to a different MME according to this embodiment;
and the MME is connected with the MCE through an M3 interface.
The MCE in fig. 3 and 4 is deployed in a distributed manner integrated with the eNB in the 3GPP protocol definition, and it should be understood that the MCE may also be deployed in a centralized manner in the 3GPP protocol definition. Neither of these two deployments is restricted to actual physical connections.
Optionally, the apparatus for processing a link failure further includes: a notifying module 807, configured to notify the MME, the MBMS-GW, and the BMSC connected to the MCE on the target master M2 link that the MCE corresponding to the eNB service changes after the transmission module 803 transmits the data on the target master M2 link according to the preset rule.
The BMSC is responsible for providing and transmitting the eMBMS user service, is responsible for authorizing a user requesting to join the eMBMS service, and initiates an eMBMS bearer service in a mobile network;
the MBMS-GW is used for sending MBMS data to each eNB in an IP multicast mode, allocating an IP multicast address to the eNB which is to be added and receive the eMBMS data, and sending an eMBMS session control signaling to the eNB through the MME to conduct eMBMS session management.
Optionally, the determining module 801 is further configured to determine whether the failure of the master M2 link is recovered;
if yes, the determining module 805 is further configured to set the active M2 link as a standby M2 link, and the shielding module 806 is further configured to shield sending of downlink data on the active M2 link;
specifically, when the failed M2 link is detected to recover, an uplink signaling message error indication is sent on the recovered M2 link, where the message carries failure content, and the failure content includes that the link is a standby M2 link; after receiving the transmitted error indication, the M2 link connected with the error indication is deactivated, and the transmission of the downlink data of the M2 link, including signaling and user data, is shielded.
According to the processing device for the link failure provided by the embodiment, in the process of transmitting data by using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, and a plurality of MCEs in the system can mutually play a role of redundant backup, so that the reliability of the wireless multicast or broadcast system is improved, and the phenomenon that the multicast or broadcast service of the whole wireless side is disqualified due to the failure of the active M2 link is avoided.
Example four
In the process of transmitting data by using the M2 link, in order to avoid the problem that the multicast or broadcast service of the whole wireless side is out of service due to the failure of the M2 link, the embodiment provides a base station, which comprises a processor 1001 and a memory 1002;
the processor 1001 is configured to execute one or more programs stored in the memory 1002 to implement the steps of the method for processing a link failure in the first embodiment;
the memory 1002 is coupled to the processor 1001.
Specifically, the processor 1001 is configured to execute one or more programs stored in the memory 1002 to implement the following steps:
s201: in the process of using the main M2 link to transmit data, judging whether the main M2 link fails; if yes, entering S202; if not, entering S204;
the reasons for the failure of the M2 link include, but are not limited to, a failure of the M2 physical link, a failure of the MCE network element, and a failure of the MCE link interface board.
If the primary M2 link fails, data transmission and service interruption may result.
The MCE is responsible for allocating time-frequency resources to eMBMS transmission, and scheduling of an air interface, eMBMS session management, wireless configuration (time-frequency resources, modulation and coding modes) and the like are completed.
Optionally, before S201, the processor 1001 is further configured to execute one or more programs stored in the memory 1002 to implement the following steps:
establishing each M2 link; one M2 link in the M2 links is used as a main M2 link, and the rest are used as standby M2 links;
specifically, the same eNB may establish multiple M2 links with the MCE; receiving the configuration of each M2 link through a configuration tool, wherein each link is distinguished through a link ID and an opposite terminal IP address;
the same eNB and the MCE corresponding to each M2 link are respectively linked, data are only transmitted and received on the main M2 link in a normal and stable operation state, and the standby M2 link is only in a link establishment state;
shielding the sending of the downlink data on the standby M2 link;
the shielded downlink data comprises signaling and user data;
if the transmission of downlink data is not shielded on the standby M2 link, interference is caused to the eNB; the eNB works normally only with one active M2 link.
S202: selecting one link from at least one standby M2 link as a target main M2 link, and activating the target main M2 link;
after the target master M2 link is selected, the target master M2 link is activated through the cooperation of the MCE connected to the target master M2 link.
S203: transmitting data on the target main M2 link according to a preset rule;
data transmitted on the M2 link is management data, and when the M2 link fails in the process of transmitting the management data by using the active M2 link, the management data is discarded, and the subsequent management data is switched to the target active M2 link for transmission.
S203 includes: triggering data to be transmitted on a target main M2 link according to multicast service scheduling information, wherein the multicast service scheduling information is generated according to service resource scheduling information when the main M2 link fails and the overall wireless resource use condition of the MCE corresponding to the target main M2 link;
according to the multicast service scheduling information sent by the target master M2 link, scheduling resources to complete multicast or broadcast service processing, so that the service can continue;
the service resource scheduling information when the active M2 link fails includes service information such as PMCH service information, MBSFN information, multicast subframe ratio and the like when the active M2 link is interrupted.
Wherein, each M2 link is a link formed by connecting the same eNB and each MCE by adopting an M2 interface;
the M2 interface is a signaling interface between the eNB and the MCE, and is mainly used for transmitting control signaling required for developing broadcast multicast service in a multi-cell transmission mode.
The connection mode of the MCE and the MME comprises any one of the following two modes:
the first method is as follows: each MCE is connected to the same MME which belongs to one EPC; referring to fig. 3, fig. 3 is a schematic diagram illustrating that MCEs are connected to the same MME according to this embodiment;
the second method comprises the following steps: each MCE is connected to an MME of a different EPC; referring to fig. 4, fig. 4 is a schematic diagram illustrating that each MCE is connected to a different MME according to this embodiment;
and the MME is connected with the MCE through an M3 interface.
The MCE in fig. 3 and 4 is deployed in a distributed manner integrated with the eNB in the 3GPP protocol definition, and it should be understood that the MCE may also be deployed in a centralized manner in the 3GPP protocol definition. Neither of these two deployments is restricted to actual physical connections.
Optionally, after S203, the processor 1001 is further configured to execute one or more programs stored in the memory 1002 to implement the following steps:
and informing the MME, the MBMS-GW and the BMSC connected with the MCE on the target master M2 link, and changing the MCE corresponding to the eNB service.
The BMSC is responsible for providing and transmitting the eMBMS user service, is responsible for authorizing a user requesting to join the eMBMS service, and initiates an eMBMS bearer service in a mobile network;
the MBMS-GW is used for sending MBMS data to each eNB in an IP multicast mode, distributing an IP multicast address to the eNBs which are to be added and receive the eMBMS data, sending an eMBMS session control signaling to the eNBs through the MME and carrying out eMBMS session management.
Optionally, after S203, the processor 1001 is further configured to execute one or more programs stored in the memory 1002 to implement the following steps:
judging whether the fault of the main M2 link in the S201 is recovered;
if yes, setting the active M2 link as a standby M2 link, and shielding the sending of downlink data on the active M2 link;
specifically, when the failed M2 link is detected to recover, an uplink signaling message error indication is sent on the recovered M2 link, where the message carries failure content, and the failure content includes that the link is a standby M2 link; after receiving the error indication sent by the eNB, the MCE deactivates the M2 link connected to the MCE and masks the sending of its downlink data, including signaling and user data.
S204: and (6) ending.
According to the base station provided by the embodiment, in the process of transmitting data by using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, and a plurality of MCEs in the system can mutually play a role of redundant backup, so that the reliability of the wireless multicast or broadcast system is improved, and the phenomenon that the whole wireless side multicast or broadcast service is disqualified due to the failure of the active M2 link is avoided.
EXAMPLE five
In order to avoid the problem that the entire wireless-side multicast or broadcast service is unsuccessfully generated due to the failure of the M2 link in the process of transmitting data by using the M2 link, the present embodiment provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the steps of the method for processing the link failure in the first embodiment.
In particular, the one or more programs may be executable by the one or more processors to perform the steps of:
s201: in the process of using the main M2 link to transmit data, judging whether the main M2 link fails; if yes, entering S202; if not, entering S204;
the reasons for the failure of the M2 link include, but are not limited to, a failure of the M2 physical link, a failure of the MCE network element, and a failure of the MCE link interface board.
If the primary M2 link fails, data transmission and service interruption may result.
The MCE is responsible for allocating time-frequency resources to eMBMS transmission, and scheduling of an air interface, eMBMS session management, wireless configuration (time-frequency resources, modulation and coding modes) and the like are completed.
Optionally, before S201, the one or more programs may be further executable by the one or more processors to implement the steps of:
establishing each M2 link; one M2 link in the M2 links is used as an active M2 link, and the rest are used as standby M2 links;
specifically, the same eNB may establish multiple M2 links with the MCE; receiving the configuration of each M2 link through a configuration tool, wherein each link is distinguished through a link ID and an opposite terminal IP address;
the same eNB and the MCE corresponding to each M2 link are respectively linked, data are only transmitted and received on the main M2 link in a normal and stable operation state, and the standby M2 link is only in a link establishment state;
shielding the sending of the downlink data on the standby M2 link;
the shielded downlink data comprises signaling and user data;
if the transmission of downlink data is not shielded on the standby M2 link, interference is caused to the eNB; the eNB works normally only with one active M2 link.
S202: selecting one link from at least one spare M2 link as a target main M2 link, and activating the target main M2 link;
after the target master M2 link is selected, the target master M2 link is activated through the cooperation of the MCE connected to the target master M2 link.
S203: transmitting data on the target main M2 link according to a preset rule;
data transmitted on the M2 link is management data, and when the M2 link fails in the process of transmitting the management data by using the active M2 link, the management data is discarded, and the subsequent management data is switched to the target active M2 link for transmission.
S203 includes: triggering data to be transmitted on a target main M2 link according to multicast service scheduling information, wherein the multicast service scheduling information is generated according to service resource scheduling information when the main M2 link fails and the overall wireless resource use condition of the MCE corresponding to the target main M2 link;
according to the multicast service scheduling information sent by the target master M2 link, scheduling resources to complete multicast or broadcast service processing, so that the service can continue;
the service resource scheduling information when the active M2 link fails includes service information such as PMCH service information, MBSFN information, multicast subframe ratio and the like when the active M2 link is interrupted.
Wherein, each M2 link is a link formed by connecting the same eNB and each MCE by adopting an M2 interface;
the M2 interface is a signaling interface between the eNB and the MCE, and is mainly used for transmitting control signaling required for developing broadcast multicast service in a multi-cell transmission mode.
The connection mode of the MCE and the MME comprises any one of the following two modes:
the first method is as follows: each MCE is connected to the same MME which belongs to one EPC; referring to fig. 3, fig. 3 is a schematic diagram illustrating that MCEs are connected to the same MME according to this embodiment;
the second method comprises the following steps: each MCE is connected to an MME of a different EPC; referring to fig. 4, fig. 4 is a schematic diagram illustrating that each MCE is connected to a different MME according to this embodiment;
and the MME is connected with the MCE through an M3 interface.
The MCE in fig. 3 and 4 is deployed in a distributed manner integrated with the eNB in the 3GPP protocol definition, and it should be understood that the MCE may also be deployed in a centralized manner in the 3GPP protocol definition. Neither of these two deployments is restricted to actual physical connections.
Optionally, after S203, the one or more programs are further executable by the one or more processors to implement the steps of:
and informing the MME, the MBMS-GW and the BMSC connected with the MCE on the target master M2 link, and changing the MCE corresponding to the eNB service.
The BMSC is responsible for providing and transmitting the eMBMS user service, is responsible for authorizing a user requesting to join the eMBMS service, and initiates an eMBMS bearer service in a mobile network;
the MBMS-GW is used for sending MBMS data to each eNB in an IP multicast mode, allocating an IP multicast address to the eNB which is to be added and receive the eMBMS data, and sending an eMBMS session control signaling to the eNB through the MME to conduct eMBMS session management.
Optionally, after S203, the one or more programs are further executable by the one or more processors to implement the steps of:
judging whether the fault of the main M2 link in the S201 is recovered;
if yes, setting the active M2 link as a standby M2 link, and shielding the sending of downlink data on the active M2 link;
specifically, when the failed M2 link is detected to recover, an uplink signaling message error indication is sent on the recovered M2 link, where the message carries failure content, and the failure content includes that the link is a standby M2 link; after receiving the error indication sent by the eNB, the MCE deactivates the M2 link connected to the MCE and masks the sending of its downlink data, including signaling and user data.
S204: and (6) ending.
According to the computer-readable storage medium provided by this embodiment, in the process of transmitting data using the active M2 link, if the active M2 link fails, the data is switched to the standby M2 link for transmission, and multiple MCEs in the system can mutually perform a redundant backup function, so that the reliability of the wireless multicast or broadcast system is improved, and the failure of the active M2 link does not cause the withdrawal of the multicast or broadcast service on the whole wireless side.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored on a storage medium (ROM or RAM, magnetic disk, optical disk) for execution by a computing device, and in some cases, the steps shown or described may be performed in an order different from that described herein, or they may be separately fabricated as individual integrated circuit modules, or multiple ones of them may be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A method for processing link failure comprises the following steps:
in the process of using the primary M2 link to transmit data, judging whether the primary M2 link fails;
if yes, selecting one link from at least one standby M2 link as a target master M2 link, and activating the target master M2 link;
transmitting data on the target master M2 link according to preset rules, where the preset rules include: the target master M2 link sends multicast service scheduling information;
wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface.
2. The method for handling a link failure as claimed in claim 1, wherein before determining whether the active M2 link fails during the process of using the active M2 link to transmit data, the method further comprises:
establishing each M2 link; one M2 link in the M2 links is used as a main M2 link, and the rest links are used as standby M2 links;
and shielding the transmission of the downstream data on the standby M2 link.
3. The method for handling a link failure according to claim 1, wherein after the data is transmitted on the target master M2 link according to the preset rule, the method further includes:
judging whether the fault of the main M2 link is recovered;
if yes, setting the active M2 link as a standby M2 link, and shielding the transmission of downlink data on the active M2 link.
4. The method for handling link failure according to any one of claims 1 to 3, wherein the transmitting data on the target master M2 link according to the preset rule includes:
and triggering data to be transmitted on the target master M2 link according to the multicast service scheduling information, where the multicast service scheduling information is generated according to the service resource scheduling information when the master M2 link fails and the overall wireless resource usage of the multi-cell multicast coordination entity corresponding to the target master M2 link.
5. The method for handling a link failure according to any one of claims 1 to 3, wherein after the data is transmitted on the target master M2 link according to the preset rule, the method further includes:
and notifying a mobile management entity, a multimedia broadcast multicast service gateway and a broadcast multicast service center connected with the multi-cell multicast coordination entity on the target master M2 link that the multi-cell multicast coordination entity corresponding to the base station service changes.
6. The method for handling link failure according to any of claims 1 to 3, wherein each multi-cell multicast coordination entity is connected to the same mobility management entity, and the mobility management entities belong to a core network;
or, the multi-cell multicast coordination entities are connected to mobility management entities of different core networks.
7. A link failure handling apparatus, comprising:
the judging module is used for judging whether the primary M2 link fails or not in the process of using the primary M2 link to transmit data;
an activation module, configured to select one of the at least one standby M2 link as a target primary M2 link if the determination module determines that the primary M2 link fails, and activate the target primary M2 link;
a transmission module, configured to transmit data on the target master M2 link according to the multicast service scheduling information sent by the target master M2 link;
wherein, each M2 link is a link formed by connecting the same base station and each multi-cell multicast coordination entity by adopting an M2 interface.
8. The apparatus for processing a link failure according to claim 7, wherein the transmission module is configured to trigger data transmission on the target primary M2 link according to the multicast service scheduling information, where the multicast service scheduling information is generated according to service resource scheduling information when the primary M2 link fails and an overall wireless resource usage of a multi-cell multicast coordination entity corresponding to the target primary M2 link.
9. A base station, the base station comprising a processor and a memory;
the processor is configured to execute one or more programs stored in the memory to implement the steps of the method for handling a link failure according to any one of claims 1 to 6;
the memory is coupled to the processor, the link failure handling system link failure.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores one or more programs which are executable by one or more processors to implement the steps of the method of processing a link failure according to any one of claims 1 to 6.
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