CN109495916B - Communication method and device - Google Patents

Communication method and device Download PDF

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Publication number
CN109495916B
CN109495916B CN201811380242.2A CN201811380242A CN109495916B CN 109495916 B CN109495916 B CN 109495916B CN 201811380242 A CN201811380242 A CN 201811380242A CN 109495916 B CN109495916 B CN 109495916B
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China
Prior art keywords
wireless control
control device
access network
rnc
heartbeat
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CN201811380242.2A
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CN109495916A (en
Inventor
王治中
牛杰
龚磊
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Huawei Technical Service Co Ltd
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Huawei Technical Service Co Ltd
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Priority to CN201811380242.2A priority Critical patent/CN109495916B/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/10Reselecting an access point controller

Abstract

The embodiment of the application discloses a communication method and equipment, relates to the field of communication, and can solve the problem that user communication service is damaged due to repeated master robbing of RNC equipment. The communication method is applied to a communication network comprising a first wireless control device, a second wireless control device, an access network device and a core network device, wherein the first wireless control device and the second wireless control device share the same interface of the core network device. The method comprises the following steps: under the condition that a heartbeat link between first wireless control equipment and second wireless control equipment is disconnected, the first wireless control equipment judges whether the connection between the first wireless control equipment and access network equipment is disconnected or not; and if the first wireless control equipment determines that the connection with the access network equipment is disconnected, the first wireless control equipment stops sending the link establishment request to the core network equipment.

Description

Communication method and device
Technical Field
The embodiment of the application relates to the field of communication, in particular to a communication method and equipment.
Background
At present, a private interface may be newly added between Radio Network Controller (RNC) devices, and the RNC devices may communicate through the newly added private interface, and these RNC devices may form an RNC device resource pool. The RNC device resource pool may include a primary RNC device and a backup RNC device. When the standby RNC equipment cannot receive the heartbeat message sent by the main RNC equipment, the standby RNC equipment can be actively upgraded to the main RNC equipment to carry communication service between the base station and the core network.
In the prior art, after the standby RNC equipment is upgraded to the main RNC equipment, the original main RNC equipment is not actively upgraded to the standby RNC equipment. Two main RNC devices will appear in the RNC device resource pool, and then the RNC device repeatedly preempts the main, that is, both the two RNC devices continuously try to establish connection with the core network. For the core network, the two RNC devices belong to the same logical RNC, and the core network can only establish connection with one of the RNC devices. For example, after the RNC1 establishes a connection with the core network, and a link establishment request is received from the RNC2, the link between the core network and the RNC1 can only be deactivated to establish a link between the core network and the RNC 2. After the RNC2 establishes a connection with the core network, it receives a link establishment request from the RNC1, and needs to deactivate a link between the core network and the RNC2 to establish a link between the core network and the RNC 1.
Such repetition causes the communication service of the user served by the RNC device resource pool to be always in a flash state, and the communication service of the user is difficult to establish.
Disclosure of Invention
The embodiment of the application provides a communication method and equipment, and the problem that user communication service is damaged due to repeated master preemption of RNC equipment is avoided.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, a communication method is disclosed, where the communication method is applied to a communication network including a first wireless control device, a second wireless control device, an access network device, and a core network device, and the first wireless control device and the second wireless control device share a same interface of the core network device, and the method includes: in the case where the heartbeat link between the first wireless control device and the second wireless control device is broken, the first wireless control device further determines whether the connection between the first wireless control device and the access network device is broken. If the first radio control device determines that the connection with the access network device is disconnected, it may be considered that the service of the access network device may have been switched to the link between the access network device and the second radio control device, and therefore, the first radio control device stops sending the link establishment request to the core network device.
In a communication method provided in an embodiment of the present invention, when a heartbeat link between a first wireless control device and a second wireless control device is disconnected, the first wireless control device determines whether a connection between the first wireless control device and an access network device is disconnected. For the core network, the first wireless control device and the second wireless control device belong to the same logical IU port. Further, if the first wireless control device determines that the connection with the access network device is disconnected, the first wireless control device stops sending the link establishment request to the core network device. In this embodiment of the present invention, when all heartbeat links between the standby RNC device and the main RNC device are disconnected, the standby RNC device cannot receive a heartbeat message from the main RNC device, the standby RNC device is actively upgraded to the main RNC device, and a service of the access network device under the original main RNC device (i.e., the first radio control device) is switched to a link between the new main RNC device (i.e., the second radio control device) and the access network device. Subsequently, the original main RNC device determines that the heartbeat link with the original standby RNC device is disconnected, and the connection with the access network device is also disconnected, the original main RNC device may consider that the main RNC device is switched, the original standby RNC device is upgraded to the main RNC device, the original main RNC device does not send a link establishment request to the core network device, and the core network device may always maintain a connection state with the new main RNC device until a failure occurs next time, so that an IU port between the core network device and the RNC device is prevented from being repeatedly flashed, a service of the UE residing under the access network device is prevented from being normally established, and a communication service of a user is prevented from being damaged.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the method further includes: and if the first wireless control equipment does not receive the first heartbeat message sent by the second wireless control equipment, determining that the heartbeat link between the first wireless control equipment and the second wireless control equipment is disconnected.
It should be noted that the first heartbeat message is a heartbeat message between RNC devices, and when the RNC device receives the first heartbeat message, it may consider that a heartbeat link between the RNC devices is normal, and when the RNC device does not receive the first heartbeat message, it may consider that the heartbeat link between the RNC devices is disconnected.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first heartbeat message includes: the second wireless control device sends heartbeat messages through a private interface between the first wireless control device and the second wireless control device, the heartbeat messages forwarded by the access network device from the second wireless control device and the heartbeat messages forwarded by the wireless network configuration management device and passed by the second wireless control device; the wireless network configuration management equipment is used for completing data synchronization between the first wireless control equipment and the second wireless control equipment.
In the embodiment of the present invention, there are 3 heartbeat links in total between RNC devices, and therefore, the first message includes heartbeat messages on these 3 paths. When the RNC device does not receive the heartbeat message from the RNC device on any of the 3 paths, it may be considered that the heartbeat link between the RNC devices is broken.
With reference to the first aspect or the first or second possible implementation manner of the first aspect, the determining, by the first wireless control device, whether the connection between the first wireless control device and the access network device is disconnected includes: after the heartbeat link between the first wireless control device and the second wireless control device is broken, the first wireless control device monitors whether a second heartbeat message sent by the access network device is received, wherein the second heartbeat message is used for indicating that the link states of the access network device and the first wireless control device are normal.
The link between the first wireless control device and the access network device is broken, and the interface between the second wireless control device and the access network device fails, which may result in that the first wireless control device does not receive the heartbeat message forwarded by the access network device from the second wireless control device. However, if the link between the first radio control device and the access network device is broken, it is necessary to switch the traffic of the access network device to the link between the second radio control device and the access network device. That is to say, the second radio control device is upgraded to the master device, and then the first radio control device needs to be upgraded to the standby device, so as to avoid the problems that the RNC device robs the master device repeatedly and the IU interface of the core network device flashes repeatedly.
With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the determining, by the first radio control device, that the connection with the access network device is disconnected includes: and if the first wireless control device does not receive the second heartbeat message sent by the access network device after the heartbeat link between the first wireless control device and the second wireless control device is broken, determining that the connection between the first wireless control device and the access network device is broken.
It should be noted that the second heartbeat message is a heartbeat message between the RNC device (e.g., the first radio control device) and the base station (i.e., the access network device), and when the RNC device receives the second heartbeat message, it may determine that a link between the RNC device and the base station is normal, and when the RNC device does not receive the second heartbeat message, it may determine that the link between the RNC device and the base station is disconnected.
In a second aspect, a wireless control device is disclosed, where the wireless control device is a first wireless control device in a communication network, the communication network further includes a second wireless control device, an access network device and a core network device, and the first wireless control device and the second wireless control device share a same interface of the core network device, including: the processing unit is used for judging whether the connection between the first wireless control equipment and the access network equipment is disconnected or not under the condition that the heartbeat link between the first wireless control equipment and the second wireless control equipment is disconnected; and the communication unit is used for stopping sending the link establishment request to the core network equipment if the processing unit determines that the connection between the first wireless control equipment and the access network equipment is disconnected.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the processing unit is further configured to determine that the heartbeat link between the first wireless control device and the second wireless control device is disconnected if the communication unit does not receive the first heartbeat message sent by the second wireless control device.
With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the first heartbeat message includes: the second wireless control device sends heartbeat messages through a private interface between the first wireless control device and the second wireless control device, the heartbeat messages forwarded by the access network device from the second wireless control device and the heartbeat messages forwarded by the wireless network configuration management device and passed by the second wireless control device; the wireless network configuration management equipment is used for completing data synchronization between the first wireless control equipment and the second wireless control equipment.
With reference to the 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 processing unit is specifically configured to monitor, after the heartbeat link between the first wireless control device and the second wireless control device is broken, whether the communication unit receives a second heartbeat message sent by the access network device, where the second heartbeat message is used to indicate that the link states of the access network device and the first wireless control device are normal.
With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the processing unit is specifically configured to determine that the connection between the first wireless control device and the access network device is disconnected if the communication unit does not receive the second heartbeat message sent by the access network device after the heartbeat link between the first wireless control device and the second wireless control device is disconnected.
In a third aspect, a wireless control device is disclosed, where the wireless control device is a first wireless control device in a communication network, the communication network further includes a second wireless control device, an access network device, and a core network device, and the first wireless control device and the second wireless control device share a same interface of the core network device, including: the processor is used for judging whether the connection between the first wireless control equipment and the access network equipment is disconnected or not under the condition that the heartbeat link between the first wireless control equipment and the second wireless control equipment is disconnected; and the transceiver is used for stopping sending the link establishment request to the core network equipment if the processor determines that the connection between the first wireless control equipment and the access network equipment is disconnected.
With reference to the third aspect, in a first possible implementation manner of the third aspect, the processor is further configured to determine that the heartbeat link between the first wireless control device and the second wireless control device is disconnected if the transceiver does not receive the first heartbeat message sent by the second wireless control device.
With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the first heartbeat message includes: the second wireless control device sends heartbeat messages through a private interface between the first wireless control device and the second wireless control device, the heartbeat messages forwarded by the access network device from the second wireless control device and the heartbeat messages forwarded by the wireless network configuration management device and passed by the second wireless control device; the wireless network configuration management equipment is used for completing data synchronization between the first wireless control equipment and the second wireless control equipment.
With reference to the 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 processor is specifically configured to monitor, after the heartbeat link between the first wireless control device and the second wireless control device is broken, whether the transceiver receives a second heartbeat message sent by the access network device, where the second heartbeat message is used to indicate that a link state between the access network device and the first wireless control device is normal.
With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the processor is specifically configured to determine that the connection between the first wireless control device and the access network device is disconnected if the transceiver does not receive the second heartbeat message sent by the access network device after the heartbeat link between the first wireless control device and the second wireless control device is disconnected.
In a fourth aspect, a computer-readable storage medium is disclosed, comprising: the computer readable storage medium has instructions stored therein; when the computer readable storage medium is run on a first wireless control device according to any one of the second aspect and any one of the implementation manners of the second aspect, the third aspect and any one of the implementation manners of the third aspect, the first wireless control is caused to perform the communication method according to any one of the implementation manners of the first aspect and the first aspect.
In a fifth aspect, a wireless communications apparatus is disclosed that includes: instructions are stored in the wireless communication device; when the wireless communication device is operated on the first wireless control according to any one of the second aspect and the second aspect implementation manner, the third aspect and the third aspect implementation manner, the first wireless control is enabled to execute the communication method according to any one of the first aspect and the first aspect implementation manner, and the wireless communication device is a chip.
Drawings
Fig. 1 is an architecture diagram of a communication network provided by an embodiment of the present application;
fig. 2 is a schematic diagram of a heartbeat link provided in an embodiment of the present application;
FIG. 3 is an architecture diagram of a wireless control device provided by an embodiment of the present application;
fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a communication link provided by an embodiment of the present invention;
fig. 6 is another schematic flow chart of a communication method according to an embodiment of the present invention;
FIG. 7 is another architecture diagram of a wireless control device provided by an embodiment of the present invention;
fig. 8 is another architecture diagram of a wireless control device according to an embodiment of the present invention.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
At present, RNC devices can communicate with each other through a newly added private interface (Iur-p interface), and different RNC devices can achieve data synchronization. Therefore, a plurality of RNC devices can be added into a network, and when one of the RNC devices fails, other RNC devices can support the communication service of the user. Fig. 1 is an architecture diagram of a communication network including an RNC resource pool (RNC in pool) network, as shown in fig. 1, the communication network includes a base station, an RNC resource pool network, a User Equipment (UE), a Configuration Management tool (Configuration Management Express) network element, and a core network device. The RNC resource pool network comprises at least two RNC devices, each RNC device can be mutually redundantly backed up, and after a certain RNC device fails, the backup RNC can take over the normal service of the RNC device, so that the communication service of a user can be quickly recovered, and the reliability of the system is improved. For the core network, a plurality of RNC devices in the RNC resource pool networking are essentially the same destination signaling point, belong to the same logical link, and the switching of the main RNC device and the standby RNC device is only the switching of the physical IP addresses for communication. In a specific implementation, necessary device information is interacted between each RNC device in the RNC resource pool through an Iur-p interface, for example: device load information, heartbeat messages, etc.
For example, referring to fig. 1, the RNC resource pool network includes RNC1 and RNC2, RNC1 is backed up with data of RNC2, RNC2 is backed up with data of RNC1, and when RNC1 fails, the communication traffic of RNC1 can be carried by RNC 2. If the RNC2 fails, the traffic of the RNC2 may be carried by the RNC 1.
In addition, the CME may provide an automatic synchronization function to perform automatic synchronization of logical RNC data between two RNCs. It should be noted that, in order to ensure that after one RNC device fails, another RNC device may take over the control right of the base stations under the original RNC device and continue to provide services for the base stations, an Iub interface is required to exist between the base stations and the two RNC devices at the same time.
In the communication system shown in fig. 1, a base station may establish connection with an RNC device, the RNC device may establish connection with a core network device, and a terminal device of a user accesses the base station. Before communication service is performed between terminal devices, a base station and RNC devices are required to receive transmission resources configured by a core network, and then the transmission resources can be allocated according to the core network to perform communication with other terminal devices. Communicating with a core network. Only one device in the RNC resource pool masters the control right of the base station at the same time, and this RNC device may be referred to as a primary RNC device, and the other RNC devices may be referred to as standby RNC devices. When master RNC apparatus grasps the control right of the base station, it may send a message to the standby RNC apparatus.
Referring to fig. 2, the primary RNC device may send a heartbeat message to the standby RNC device through the following three paths (which may be referred to as a heartbeat link in the embodiment of the present invention):
heartbeat link 1: the primary RNC device sends heartbeat messages directly to the standby RNC device over the Iur-p interface with the standby RNC device.
Heartbeat link 2: and the main RNC equipment sends heartbeat messages to the standby RNC equipment through the dual-homing base station. For example, referring to fig. 2, an Iub interface exists between the base station 1 and the RNC1 and the RNC2, the RNC1 is a primary RNC device, and the RNC2 is a standby RNC device. The RNC1 may send a heartbeat message to base station 1, and base station 1 may forward the heartbeat message from RNC1 to RNC 2.
Heartbeat link 3: and the main RNC equipment sends a heartbeat message to the standby RNC equipment through the CME. For example, referring to fig. 2, RNC1 is a primary RNC device and RNC2 is a backup RNC device. The RNC1 may send a heartbeat message to the CME, which may forward the heartbeat message from the RNC1 to the RNC 2.
If the standby RNC equipment does not receive the heartbeat message from the main RNC equipment in the three heartbeat links. The standby RNC equipment takes over the control right actively and tries to take over all the services of the main RNC equipment. After the standby RNC device is upgraded to the primary RNC device, a heartbeat message is actively sent to the standby RNC device (including the previous primary RNC device). Due to the failure of the heartbeat link between the current primary RNC device and the previous primary RNC device, the previous primary RNC device cannot actively drop to the standby RNC device without receiving the heartbeat message. In the system, a plurality of main RNC devices all send a link establishment request to a core network, and the phenomenon that the plurality of RNC devices rob the main network repeatedly occurs, so that the communication service of a user is difficult to establish.
For example, referring to fig. 1, RNC2 is a backup RNC for RNC 1. When all three heartbeat links fail, the RNC2 receives no heartbeat message from the RNC1, and the RNC2 actively rises to be the primary RNC device. After the RNC2 is upgraded to be the master RNC device, a heartbeat message is sent to the RNC1, and the RNC1 does not receive the heartbeat message from the RNC2 because all three heartbeat links fail. Both RNC1 and RNC2 are constantly attempting to send a link establishment request signaling link to the core network via the IU port with the core network. For the core network, the RNC1 and the RNC2 belong to the same logical RNC, and the IU ports of the core and the logical RNC can only establish one normal link. Therefore, when the core network receives a link establishment request from the RNC2, the core network actively deactivates the link with the RNC1, and the traffic being established on the link interrupts the service establishment. Subsequently, after receiving the link establishment request from the RNC1, the core network actively deactivates the link with the RNC2, and the traffic being established on the link is interrupted. The repeated flash of the IU port causes that the service of the UE residing under the base station is difficult to establish, resulting in the communication service of the user being damaged.
In a communication method provided in an embodiment of the present invention, when a heartbeat link between a first wireless control device and a second wireless control device is disconnected, the first wireless control device determines whether a connection between the first wireless control device and an access network device is disconnected. For the core network, the first wireless control device and the second wireless control device belong to the same logical IU port. Further, if the first wireless control device determines that the connection with the access network device is disconnected, the first wireless control device stops sending the link establishment request to the core network device. In this embodiment of the present invention, when all heartbeat links between the standby RNC device and the main RNC device are disconnected, the standby RNC device cannot receive a heartbeat message from the main RNC device, the standby RNC device is actively upgraded to the main RNC device, and a service of the access network device under the original main RNC device (i.e., the first radio control device) is switched to a link between the new main RNC device (i.e., the second radio control device) and the access network device. Subsequently, the original main RNC device determines that the heartbeat link with the original standby RNC device is disconnected, and the connection with the access network device is also disconnected, the original main RNC device may consider that the main RNC device is switched, the original standby RNC device is upgraded to the main RNC device, the original main RNC device does not send a link establishment request to the core network device, and the core network device may always maintain a connection state with the new main RNC device until a failure occurs next time, so that an IU port between the core network device and the RNC device is prevented from being repeatedly flashed, a service of the UE residing under the access network device is prevented from being normally established, and a communication service of a user is prevented from being damaged.
The communication method provided by the embodiment of the present invention may be applied to the radio control device shown in fig. 3, where the radio control device may be an RNC device that needs to be dropped to a standby RNC device in an RNC resource pool when a failure occurs. As shown in fig. 3, the core network device may include at least one processor 301, a memory 302, a transceiver 303, and a communication bus 304.
The following describes each constituent element of the wireless control device in detail with reference to fig. 3:
the processor 301 is a control center of the wireless control device, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 301 is a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention, such as: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
The processor 301 may perform, among other things, various functions of the wireless control device by running or executing software programs stored in the memory 302 and invoking data stored in the memory 302.
In particular implementations, processor 301 may include one or more CPUs such as CPU0 and CPU1 shown in fig. 3 for one embodiment.
In particular implementations, the wireless control device may include multiple processors, such as processor 301 and processor 305 shown in fig. 3, for example, as one embodiment. Each of these processors may be a single-Core Processor (CPU) or a multi-Core Processor (CPU). A processor herein may refer to one or more wireless control devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
The Memory 302 may be a Read-Only Memory (ROM) or other type of static storage wireless control device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage wireless control device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), a magnetic disk storage medium or other magnetic storage wireless control device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. The memory 302 may be self-contained and coupled to the processor 301 through a communication bus 304. The memory 302 may also be integrated with the processor 301.
The memory 302 is used for storing software programs for implementing the scheme of the present invention, and is controlled by the processor 301 to execute.
A transceiver 303 for communication with a second device. Of course, the transceiver 303 may also be used for communicating with a communication network, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), and so on. The transceiver 303 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.
The communication bus 304 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (enhanced Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 3, but this does not mean only one bus or one type of bus.
The wireless control device configuration shown in fig. 3 does not constitute a limitation of the wireless control device and may include more or fewer components than those shown, or some of the components may be combined, or a different arrangement of components.
An embodiment of the present invention provides a communication method, as shown in fig. 4, the method includes the following steps:
401. under the condition that the service of the access network equipment is switched from the first wireless control equipment to the second wireless control equipment, if the first wireless control equipment determines that the heartbeat link between the first wireless control equipment and the second wireless control equipment is disconnected, whether the connection between the first wireless control equipment and the access network equipment is disconnected is judged.
It should be noted that the embodiment of the present invention is applicable to a communication network including an RNC resource pool networking, where the RNC resource pool networking includes a first wireless control device and a second wireless control device. For the core network device, the first radio control device and the second radio control device may be logical RNCs, and belong to the same physical RNC, and only one IU link may be provided between the core network device and the physical RNC. Therefore, at the same time, the core network device can only establish a connection with one IU interface of the physical RNC, that is, the first wireless control device and the second wireless control device share the same IU interface of the core network device, and therefore, the core network device can only establish a connection with one of the first wireless control device and the second wireless control device at the same time. In addition, the access network device may be a dual-homing base station, and an Iub interface exists between the access network device and the second radio control device.
After the RNC resource pool networking including the first wireless control device and the second wireless control device is deployed, the access network device (dual-homing base station) establishes a connection with the first wireless control device and the second wireless control device, respectively. For the access network device, the links between the first wireless control device and the second wireless control device are two completely independent logical links, and there is no mutual exclusion relationship, and the links between the access network device and the first wireless control device and the second wireless control device can be in a normal state.
In addition, a heartbeat message (i.e., a second heartbeat message according to the embodiment of the present invention) may be sent between the access network device and the first wireless control device to detect whether the link status between the access network device and the first wireless control device is normal. For example, the first wireless control device may determine that the connection with the access network device has been broken, i.e., the link state between the first wireless control device and the access network device is broken, without the first wireless control device receiving the second heartbeat message from the access network device. Of course, the access network device and the second wireless control device may also monitor the link state between the access network device and the first wireless control device through the second heartbeat message. It should be noted that the second heartbeat message is different from the aforementioned heartbeat message, and the second heartbeat message may be referred to as a heartbeat message between the base station and the RNC device, and is used for the link state between the base station and the RNC device being normal. The heartbeat message is a heartbeat message between RNC devices, that is, the first heartbeat message described in the embodiment of the present invention indicates that a heartbeat link between RNC devices is normal.
Initially the first radio control device is the master RNC device, the traffic of the access network device is taken care of by the first radio control device, and the link between the access network device and the first radio control device carries the traffic. The second radio control device is a standby RNC device, and a link also exists between the second radio control device and the access network device, but the link is in a standby state and does not temporarily carry the service of the access network device.
When the heartbeat link between the first wireless control device and the second wireless control device is disconnected and the second wireless control device cannot receive the heartbeat message from the first wireless control device, the second wireless control device is actively raised to be the main RNC device. Subsequently, the second wireless control device sends a link establishment request to the core network device to establish a connection with the core network device. In addition, the second wireless control device may further establish a handover message to the access network device, indicating that the link carrying the service of the access network device is switched to the link between the access network device and the second wireless control device. That is, the second wireless control device grasps the control right of the access network device, and the traffic of the access network device is switched from the first wireless control device to the second wireless control device. In this case, if the link state between the access network device and the original master RNC device (i.e., the first radio control device) is normal. Then, the heartbeat message between the RNC devices may be forwarded through the access network device, and the first radio control device receives the heartbeat message sent after the second radio control device is upgraded to the main RNC device, and may automatically drop to the standby RNC device. However, if the link between the access network device and the first wireless control device is disconnected, the access network device cannot forward the heartbeat message from the second wireless control device, and if the other two heartbeat links are also failed, the first wireless control device cannot receive the heartbeat message from the second wireless control device, and the first wireless control device cannot know that the second wireless control device has risen to the primary RNC device, and thus cannot actively drop to the standby RNC device, and then a link establishment request is sent to the core network device, which may cause the RNC device to rob the primary device repeatedly, and the communication service of the user cannot be established.
In the embodiment of the present invention, the first wireless control device does not directly send the link establishment request to the core network device, but performs subsequent determination, and if the first wireless control device determines that the heartbeat link with the second wireless control device is interrupted and the second wireless control device has already been upgraded to the master RNC device, the first wireless control device stops sending the link establishment request to the core network device.
In a specific implementation, the first wireless control device first determines whether a heartbeat link between the first wireless control device and the second wireless control device has been disconnected. In some embodiments, the first wireless control device determines that the heartbeat link between the first wireless control device and the second wireless control device is broken if it does not receive a heartbeat message sent by the second wireless control device.
It should be noted that after the second radio control device is upgraded to the master RNC device, the second radio control device sends a heartbeat message to the first radio control device through three heartbeat links with the first radio control device. The heartbeat link between the first wireless control device and the second wireless control device may be determined to be broken if the first wireless control device does not receive heartbeat messages from the second wireless control device on any of the three heartbeat paths. Specifically, if the first wireless control device does not receive the heartbeat message sent by the second wireless control device through the private interface between the first wireless control device and the second wireless control device, does not receive the heartbeat message sent by the second wireless control device through the access network device, and does not receive the heartbeat message sent by the second wireless control device through the wireless network configuration management device, it is determined that the heartbeat link between the first wireless control device and the second wireless control device is disconnected.
In addition, the private interface between the first radio control device and the second radio control device may be an Iur-p interface, after the second radio control device is upgraded to the primary RNC device, the second radio control device may directly send a heartbeat message to the first radio control device through the Iur-p interface, and if the second radio control device does not receive the heartbeat message from the first radio control device through the Iur-p interface, the heartbeat link is considered to be broken. The cause of the interruption of the heartbeat link may be a failure of an Iur-p interface of the first radio control device or a failure of an Iur-p interface of the second radio control device, which is not limited in the embodiment of the present invention.
After the second radio control device is upgraded to the master RNC device, it may also send a heartbeat message to the first radio control device through the access network device, and if the first radio control device does not receive a heartbeat message from the second radio control device through an interface (e.g., Iub interface) for communication with the access network device, it considers that the heartbeat link is broken. The cause of the interruption of the heartbeat link may be an Iub interface failure of the first radio control device or an Iub interface failure of the access network device, or an Iub interface failure of the second radio control device, or a link disconnection between the first radio control device and the access network device, which is not limited in this embodiment of the present invention.
After the second wireless control device is upgraded to the main RNC device, the second wireless control device may further send a heartbeat message to the first wireless control device through the wireless network configuration management device, and if the first wireless control device does not receive the heartbeat message from the second wireless control device forwarded by the wireless network configuration management device, it is considered that the heartbeat link is interrupted. The reason for the interruption of the heartbeat link may be a failure of the wireless network configuration management device, which is not limited in the embodiment of the present invention. The wireless network configuration management device is configured to complete data synchronization between the first wireless control device and the second wireless control device, for example: the CME described in the embodiments of the present invention.
In this embodiment of the present invention, after the first wireless control device determines that the heartbeat link with the second wireless control device is disconnected, it is further required to determine whether the second wireless control device is upgraded to a master RNC device. Referring to fig. 5, before the terminal device communicates with other terminal devices through the access network device, a control plane link (link:) from the terminal device to the core network device needs to be established, and a transmission resource allocated to the terminal device by the core network is received, so that after the second radio control device is upgraded to the master RNC device, a handover message needs to be sent to the access network device, and a service of the access network needs to be handed over to a link between the access network device and the second radio control device. In addition, the second wireless control device needs to establish a connection with the core network device, and then the transmission resource allocated by the core network device can be issued to the terminal device through the second wireless control device and the access network device. In the embodiment of the present invention, the first radio control device may determine whether the second radio control device is upgraded to the master RNC device by periodically checking the link status between itself and the access network device (dual-homed base station). Specifically, the first wireless control device may periodically monitor a link status with the access network device, for example, if the first wireless control device does not receive a heartbeat message from the access network device, it may determine that the link status between the first wireless control device and the access network device is disconnected, that is, the connection between the first wireless control device and the access network device is disconnected, and then the traffic of the access network device needs to be switched to the link between the access network device and the second wireless control device.
402. And if the first wireless control equipment determines that the connection with the access network equipment is disconnected, stopping sending the link establishment request to the core network equipment.
In a specific implementation, if the first wireless control device does not receive a heartbeat message (a heartbeat message between the base station and the RNC device) sent by the access network device after the heartbeat link between the first wireless control device and the second wireless control device is broken, it is determined that the first wireless control device determines that the connection with the access network device is broken. Since the first wireless control device determines that the connection with the access network device is broken, it is possible that traffic from the access network device has switched to the link between the access network device and the second wireless control device. The first wireless control device can consider that the second wireless control device is already upgraded to the main RNC device, in order to avoid the problem that the RNC device robs the main RNC device to cause the communication service of the user to be unable to be established, the first wireless control device can be actively reduced to the standby RNC device, the chain establishment request is stopped being sent to the core network device, before the main RNC device and the standby RNC device are switched next time, the control right of the access network device is always mastered by the second wireless control device, the communication service of the user is received, and the successful establishment of the communication service of the user is ensured.
In this embodiment of the present invention, the link establishment request sent by the first wireless control device and the second wireless control device to the core network device may be an INIT message of a Stream Control Transmission Protocol (SCTP).
The embodiment of the invention also provides a communication method, taking an example that the RNC resource pool comprises two RNC devices, namely an RNC1 and an RNC2, wherein the RNC1 and the RNC2 belong to the same logic RNC, the logic RNC provides service for the base station 1 and the base station 2, the base station 1 and the base station 2 are dual-homing base stations, and Iub interfaces exist between the RNC1 and the RNC 2. In addition, the RNC resource pool supports automatic switching of RNC devices, that is, when the main RNC device fails, the control right of the standby RNC device is automatically triggered. As shown in fig. 6, the method comprises the steps of:
601. the RNC1 establishes connection with the core network device, and the RNC1 establishes connection with the base station 1 and the base station 2 to receive communication services of the base station 1 and the base station 2.
Specifically, the RNC1 may receive resource configuration information sent by the core network device, where the resource configuration information is used to indicate that the core network device is a transmission resource allocated to the terminal device residing under the base station 1 and the base station 2. The core network device may forward the resource configuration information to the corresponding base station. For example, the resource configuration information sent by the core network device indicates the transmission resource allocated to the terminal device residing under the base station 1, and the RNC1 forwards the resource configuration information to the base station 1, so that the base station 1 forwards the resource configuration information to the terminal device residing under the base station 1. The resource configuration information sent by the core network device indicates the transmission resource allocated to the terminal device residing under the base station 2, and the RNC1 forwards the resource configuration information to the base station 2, so that the base station 2 forwards the resource configuration information to the terminal device residing under the base station 2.
Of course, the information that the RNC1 may forward includes, but is not limited to, the resource configuration information described above, and may also be other information, which is not limited in this embodiment of the present invention.
602. The RNC2 does not receive the heartbeat message sent by the RNC1 through the Iur-P interface, the base station 1, the base station 2 and the CME, and the RNC2 is raised as a main RNC device.
Alternatively, the Iub interface between the RNC2 and multiple dual-homed base stations is normal, and the RNC2 is raised as the primary RNC device. In this embodiment, the logical RNCs to which the RNC1 and the RNC2 belong provide services for two base stations, and when the RNC2 does not receive the heartbeat message sent by the RNC1 through the Iur-P interface, the base station 1, the base station 2, and the CME, and the Iub interface between the RNC2 and the base station 1 and the base station 2 is normal, the RNC2 is a master RNC device.
A logical RNC serves a plurality (e.g., more than two) of base stations, and RNC2 only becomes the primary RNC device when the number of base stations on the Iub interface with RNC2 that remain normal exceeds a threshold. Such as: the Iub interface between RNC2 and 10 dual-homed base stations is normal, and RNC2 is the primary RNC device.
Specifically, the RNC2 sends a link establishment request to the core network device, and establishes a connection with the core network device. The RNC2 also sends handover messages to the base station 1 and the base station 2, respectively, instructing the base station 1 to switch the traffic to the link between the base station 1 and the RNC2 and the base station 2 to switch the traffic to the link between the base station 2 and the RNC 2.
603. The RNC2 sends heartbeat messages to the RNC1 over three heartbeat links.
After the RNC2 becomes the master RNC device, it sends a heartbeat message to the RNC1 (the standby RNC device after the control right is switched).
604. The RNC1 does not receive the heartbeat message from the RNC2 in any of the three heartbeat links, and the RNC1 periodically checks the signaling planes of the base stations 1 and 2.
Since all three heartbeat links between the RNC1 and the RNC2 are broken, the RNC1 does not receive heartbeat messages sent after the RNC2 is upgraded.
Note that, the RNC1 can determine whether the connection between the RNC1 and the base stations 1 and 2 is broken after the heartbeat link between the RNC1 and the RNC2 is broken by checking the signaling planes of the base stations 1 and 2. For example, the RNC1 may determine whether a heartbeat message (i.e., the second heartbeat message according to the embodiment of the present invention) sent by the base station 1 and the base station 2 is received, and further determine whether the connection between the RNC1 and the base station 1 is disconnected, and whether the connection between the RNC1 and the base station 2 is disconnected. If the RNC1 does not receive the second heartbeat messages sent by the base stations 1 and 2, the connection between the RNC1 and the base station 1 is disconnected, and the connection between the RNC1 and the base station 2 is disconnected.
605. The RNC1 determines that it is disconnected from base station 1, base station 2, then the RNC1 will actively drop to a standby RNC device and no longer attempt to upgrade.
In a specific implementation, after the heartbeat link between the RNC1 and the RNC2 is disconnected, the RNC1 does not receive the link establishment request sent by the base station 1 or the base station 2, and it may be that the base station 1 or the base station 2 is switched to the RNC2, that is, the RNC2 has already risen to the primary device to receive the communication service of the user, and the RNC1 does not send the link establishment request to the core network device any more.
After step 605, the UE always communicates with the CN through the RNC1 and establishes a service until the next time the active/standby RNC device is switched.
The method provided by the embodiment of the invention can effectively avoid the service damage caused by the RNC equipment repeatedly robbing the main RNC equipment when the scheme of switching the main RNC equipment to the standby RNC equipment is failed, enhance the fault tolerance of the network and ensure the stable establishment of the communication service of the user.
Fig. 7 shows a schematic diagram of a possible structure of the wireless control device according to the above-described embodiment, in a case where functional modules are divided for respective functions. As shown in fig. 7, the wireless control apparatus includes a processing unit 701 and a communication unit 702.
A processing unit 701 for enabling the wireless control device to perform step 401 in the above embodiments, and/or other processes for the techniques described herein.
A communication unit 702 for enabling the wireless control device to perform step 402 in the above-described embodiments, and/or other processes for the techniques described herein.
It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
For example, in the case of using an integrated unit, a schematic structural diagram of a wireless control device provided in an embodiment of the present application is shown in fig. 8. In fig. 8, the wireless control apparatus includes: a processing module 801 and a communication module 802. The processing module 801 is used for controlling and managing actions of the wireless control device, for example, performing the steps performed by the processing unit 701 described above, and/or other processes for performing the techniques described herein. The communication module 802 is configured to perform the steps performed by the communication unit 702, and support interaction between the wireless control device and other devices, such as interaction with a second device and a wireless control device. As shown in fig. 8, the wireless control device may further include a storage module 803, and the storage module 803 is used for storing program codes and data of the wireless control device.
When the processing module 801 is a processor, the communication module 802 is a transceiver, and the storage module 803 is a memory, the wireless control device is the wireless control device shown in fig. 3.
Through the description of the above embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above functions may be distributed by different functional modules according to needs, that is, the internal structure of the database access apparatus may be divided into different functional modules to complete all or part of the above described functions.
In the several embodiments provided in the present application, it should be understood that the disclosed database access apparatus and method may be implemented in other ways. For example, the above-described database access device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, multiple units or components may be combined or integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, database access devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip microcomputer, a chip, or the like) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A communication method applied to a communication network including a first wireless control device, a second wireless control device, an access network device, and a core network device, wherein the first wireless control device and the second wireless control device share a same interface of the core network device, the method comprising:
the first wireless control device judges whether the connection between the first wireless control device and the access network device is disconnected or not under the condition that the heartbeat link between the first wireless control device and the second wireless control device is disconnected;
and if the first wireless control equipment determines that the connection between the first wireless control equipment and the access network equipment is disconnected, the first wireless control equipment stops sending a link establishment request to the core network equipment.
2. The method of claim 1, further comprising:
and if the first wireless control device does not receive the first heartbeat message sent by the second wireless control device, determining that the heartbeat link between the first wireless control device and the second wireless control device is disconnected.
3. The method of claim 2, wherein the first heartbeat message comprises: the second wireless control device sends a heartbeat message through a private interface between the first wireless control device and the second wireless control device, the access network device forwards the heartbeat message from the second wireless control device, and the wireless network configuration management device forwards the heartbeat message from the second wireless control device;
wherein the wireless network configuration management device is configured to complete data synchronization between the first wireless control device and the second wireless control device.
4. The method of any of claims 1-3, wherein the first wireless control device determining whether the connection between the first wireless control device and the access network device is broken comprises:
after the heartbeat link between the first wireless control device and the second wireless control device is broken, the first wireless control device monitors whether a second heartbeat message sent by the access network device is received, wherein the second heartbeat message is used for indicating that the link states of the access network device and the first wireless control device are normal.
5. The method of claim 4, wherein the first wireless control device determining the disconnection from the access network device comprises:
and if the first wireless control device does not receive the second heartbeat message sent by the access network device after the heartbeat link between the first wireless control device and the second wireless control device is broken, determining that the connection between the first wireless control device and the access network device is broken.
6. A wireless control device, the wireless control device being a first wireless control device in a communication network, the communication network further including a second wireless control device, an access network device, and a core network device, the first wireless control device and the second wireless control device sharing a same interface of the core network device, the wireless control device comprising:
a processing unit, configured to determine whether a connection between the first wireless control device and the access network device is disconnected when a heartbeat link between the first wireless control device and the second wireless control device is disconnected;
a communication unit, configured to stop sending the link establishment request to the core network device if the processing unit determines that the connection between the first wireless control device and the access network device is disconnected.
7. The device of claim 6, wherein the processing unit is further configured to determine that the heartbeat link between the first wireless control device and the second wireless control device is broken if the first heartbeat message sent by the second wireless control device is not received by the communication unit.
8. The device of claim 7, wherein the first heartbeat message comprises: the second wireless control device sends a heartbeat message through a private interface between the first wireless control device and the second wireless control device, the access network device forwards the heartbeat message from the second wireless control device, and the wireless network configuration management device forwards the heartbeat message from the second wireless control device;
wherein the wireless network configuration management device is configured to complete data synchronization between the first wireless control device and the second wireless control device.
9. The device according to any of claims 6 to 8, wherein the processing unit is specifically configured to monitor, after the heartbeat link between the first wireless control device and the second wireless control device is broken, whether the communication unit receives a second heartbeat message sent by the access network device, where the second heartbeat message is used to indicate that the link status of the access network device and the first wireless control device is normal.
10. The device according to claim 9, wherein the processing unit is specifically configured to determine that the connection between the first wireless control device and the access network device is broken if the communication unit does not receive the second heartbeat message sent by the access network device after the heartbeat link between the first wireless control device and the second wireless control device is broken.
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