CN116546533A - Method for improving operation stability of 5G mobile communication base station - Google Patents
Method for improving operation stability of 5G mobile communication base station Download PDFInfo
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- CN116546533A CN116546533A CN202310329301.8A CN202310329301A CN116546533A CN 116546533 A CN116546533 A CN 116546533A CN 202310329301 A CN202310329301 A CN 202310329301A CN 116546533 A CN116546533 A CN 116546533A
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 17
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- 230000008569 process Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 9
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- 230000005856 abnormality Effects 0.000 claims description 4
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method for improving the operation stability of a 5G mobile communication base station, which realizes the high reliability of a network by modeling the 5G mobile communication base station according to layers of CU, DU and RU and performing redundancy processing on each layer. The layered redundancy logic can well meet the requirement of high reliability of the system. The method for controlling redundancy switching by adopting the DU data processing module can reduce the complexity of implementation and make the switching logic clear.
Description
Technical Field
The invention relates to the technical field of wireless mobile communication, in particular to a method for improving the operation stability of a 5G mobile communication base station.
Background
The stability of a network is an important indicator of the operation of a communication network. There are various ways of system redundancy in the network to increase the robustness of the system. In the DU device, there are a forwarding CPRI processing section and a data processing section. In the case of no redundancy, RU data arrives at the data processing module through the forwarding CPRI processing module. The DU processes control and user data in the 5G carrier frequency and finally reaches the CU and is sent to the core network.
Conventional approaches to system redundancy often employ device stacking, which, while improving system robustness, can also be costly in terms of the hardware that is introduced. The difference of redundant software algorithms can also lead to inconsistent utilization of system equipment and in extreme cases, equipment waste.
Disclosure of Invention
The invention provides a method for improving the operation stability of a 5G mobile communication base station, which aims to solve the problems in the prior art, and realizes the high reliability of a network by modeling the 5G mobile communication base station according to layers of CU, DU and RU and performing redundancy processing on each layer.
The invention provides a method for improving the operation stability of a 5G mobile communication base station, which comprises the following steps:
1) DU forwarding CPRI processing module: the working mode of the CPRI processing module is controlled by M-Plane of DU;
2) DU data processing module: for the redundant part of the DU data processing module, on one hand, the state of the main DU and the state of the backup DU are communicated through heartbeat information, and on the other hand, the connected CPRI processing module and the CU connection state are monitored, so that a main and backup DU switching algorithm controlled by the data processing module is realized;
3) CU module: side redundancy processing is performed for a CU while taking into account the status of the DUs connected thereto and the core network connection status.
In step 1), a CPRI forwarding path connection is added between the CPRI processing modules, and the DU forwards the received RU data to the CPRI processing module connected to another DU device.
Further improved, the M-Plane control of the DU of step 1) is specifically as follows:
the received data processing module works in a baseband receiving and transmitting mode command, and the CPRI forwarding mode is switched to the baseband receiving and transmitting mode;
the received data processing module works in a CPRI forwarding mode command, and the baseband receiving and transmitting mode is switched to the CPRI forwarding mode;
the received data processing module works in a CPRI forwarding mode command, the DU CPRI processing module is started, and the CPRI forwarding mode is switched in;
the received data processing module works in a baseband receiving and transmitting mode command or does not receive the data processing module command, the DU CPRI processing module is started, and the CPRI forwarding mode is shifted;
further improved, the DU data processing module includes Standby, active, faulty three states.
Further improved, the redundant processing process of the DU data processing module specifically comprises the following steps:
when the DU data processing module is started up:
if the main and Standby flag bit = second stored in the current DU, setting the connected CPRI processing module as a CPRI forwarding mode, locking the F1 connection, and enabling the DU data processing module to enter a Standby state or a state; if the main and standby flag bit = master stored in the current DU, setting the connected CPRI processing module as a baseband receiving and transmitting mode, triggering to establish F1 connection, and enabling the DU data processing module to enter an Active state;
when the DU data processing module is in the Standby state or the Faulty state:
periodically polling whether DU in an Active state exists in the network through the HB heartbeat line interface;
HB heartbeat line broken link action, namely, sending DU Active Request to CU and receiving a reply message indicating reject; reporting HB heartbeat line broken chain alarm;
when the DU data processing module is in an Active state:
reporting HB heartbeat line broken chain alarm;
current working F1 connection abnormal action: attempting to establish F1 connection with CU in Standby state, and establishing successfully; reporting F1 connection abnormality alarm;
when the DU data processing module performs mode conversion:
if the main activation message of the paired data processing module is received and the ping-pong protection timer is overtime, or the period inquiry result is that the Active data processing module does not act in the network, the DU data processing module is switched from the Standby state to the Active state, the connected CPRI processing module is set to be in a baseband transceiving mode, the F1 connection is triggered to be established, and the ping-pong protection timer is started;
if the two Fl connections are abnormal, the self is abnormal or all RRUs are lost, and the ping-pong protection timer is overtime, the DU data processing module is switched from an Active state to a Standby state, the connected CPRI processing module is set to be in a CPRI forwarding mode, the F1 connection is locked, a main activation message is sent to the paired data processing module, the ping-pong protection timer is started, and corresponding alarm treatment is carried out.
Further improved, the CU data processing module comprises Standby, active states.
Further improved, the redundancy processing process of the CU data processing module is specifically as follows:
when the CU starts up:
if the main and Standby flag bit = second stored in the current CU, locking the NG connection, notifying the OSS, and enabling the current CU to enter a Standby state;
if the main and standby flag bit = master stored in the current CU, triggering to establish NG connection, informing an OSS, and enabling the current CU to enter an Active state;
CU is in Standby state:
periodically polling CUs in the existing Active state in the network through HB heartbeat links;
HB chain scission action: sending an Active Request to an OSS and receiving a reply message with the content of Reject;
when CU is in Active state:
establishing F1 connection, establishing NG connection, and allowing to activate a cell when the different station address flag bit = false stored in the CU; when the different station address flag bit=true stored in the CU, the cell is allowed to be activated only if two RUs in the cell are connectable;
when a CU is in state transition:
if the Active activation message of another CU is received and the ping-pong protection timer is overtime, or the period inquiry result is that the CU has no Active state in the network, triggering to establish NG connection, allowing to accept F1-C and F1-U connection, starting the ping-pong protection timer, and informing an OSS that the current CU enters the Active state;
if all F1 connections are abnormal, NG connection is abnormal or self is abnormal, and the ping-pong protection timer is overtime, locking NG connection, sending an Active Request message to the paired CU, starting the ping-pong protection timer, and informing the OSS that the current CU enters a Standby state;
and the logic HB link breaking action sends an Active Request to the OSS and receives the confirmation message.
The invention has the beneficial effects that:
1. the 5G mobile communication base station is modeled according to the layers of CU, DU and RU, and redundancy processing is carried out on each layer, so that high reliability of the network is realized.
2. The layered redundancy logic can well meet the requirement of high reliability of the system.
3. The method for controlling redundancy switching by adopting the DU data processing module can reduce the complexity of implementation and make the switching logic clear.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a 5G network hardware architecture;
FIG. 2 is a schematic diagram illustrating the control of the operation state of the CPRI processing module;
FIG. 3 is a schematic diagram of a redundant processing procedure of a DU data processing module;
FIG. 4 is a schematic diagram of a redundancy process of a CU data processing module.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The hardware structure of the 5G network adopted by the invention is shown in fig. 1, and is a conventional 5G network connection schematic diagram.
The specific process of the invention comprises the following steps:
1) The CPRI processing module is added between the CPRI processing modules, as shown in fig. 2, and the received RU data is forwarded to the CPRI processing module of another DU device connected to the received RU by the DU.
The working mode of the CPRI processing module is controlled by M-Plane of DU, and the specific process is as follows:
the received data processing module works in a baseband receiving and transmitting mode command, and the CPRI forwarding mode is switched to the baseband receiving and transmitting mode;
the received data processing module works in a CPRI forwarding mode command, and the baseband receiving and transmitting mode is switched to the CPRI forwarding mode;
the received data processing module works in a CPRI forwarding mode command, the DU CPRI processing module is started, and the CPRI forwarding mode is switched in;
the received data processing module works in a baseband receiving and transmitting mode command or does not receive the data processing module command, the DU CPRI processing module is started, and the CPRI forwarding mode is shifted.
2) DU data processing module: for the redundant part of the DU data processing module, on one hand, the state of the main DU and the state of the backup DU are communicated through heartbeat information, and on the other hand, the connected CPRI processing module and the CU connection state are monitored, so that the main and backup DU switching algorithm controlled by the data processing module is realized.
The DU data processing module comprises Standby, active, faulty states, and the redundancy processing process specifically comprises:
when the DU data processing module is started up:
if the main and Standby flag bit = secondary (secondary) stored in the current DU, setting the connected CPRI processing module as a CPRI forwarding mode, locking the F1 connection, and enabling the DU data processing module to enter a Standby state or a state; if the main and standby flag bit = master (main) stored in the current DU, setting the connected CPRI processing module as a baseband receiving and transmitting mode, triggering to establish F1 connection, and enabling the DU data processing module to enter an Active state;
when the DU data processing module is in the Standby state or the Faulty state:
periodically polling whether DU in an Active state exists in the network through the HB heartbeat line interface;
HB heartbeat line broken link action, namely, sending DU Active Request to CU and receiving a reply message indicating reject; reporting HB heartbeat line broken chain alarm;
when the DU data processing module is in an Active state:
reporting HB heartbeat line broken chain alarm;
current working F1 connection abnormal action: attempting to establish F1 connection with CU in Standby state, and establishing successfully; reporting F1 connection abnormality alarm;
when the DU data processing module performs working mode conversion:
if the main activation message of the paired data processing module is received and the ping-pong protection timer is overtime, or the period inquiry result is that the Active data processing module does not act in the network, the DU data processing module is switched from the Standby state to the Active state, the connected CPRI processing module is set to be in a baseband transceiving mode, the F1 connection is triggered to be established, and the ping-pong protection timer is started;
if the two Fl connections are abnormal, the self is abnormal or all RRUs are lost, and the ping-pong protection timer is overtime, the DU data processing module is switched from an Active state to a Standby state, the connected CPRI processing module is set to be in a CPRI forwarding mode, the F1 connection is locked, a main activation message is sent to the paired data processing module, the ping-pong protection timer is started, and corresponding alarm treatment is carried out.
3) CU module: side redundancy processing is performed for a CU while taking into account the status of the DUs connected thereto and the core network connection status.
The CU data processing module comprises Standby, active states, and the redundancy processing process is specifically as follows:
when the CU starts up:
if the main and Standby flag bit = second stored in the current CU, locking the NG connection, notifying the OSS, and enabling the current CU to enter a Standby state;
if the main and standby flag bit = master stored in the current CU, triggering to establish NG connection, informing an OSS, and enabling the current CU to enter an Active state;
CU is in Standby state:
periodically polling CUs in the existing Active state in the network through HB heartbeat links;
HB chain scission action: sending an Active Request to an OSS and receiving a reply message with the content of Reject;
when CU is in Active state:
establishing F1 connection, establishing NG connection, and allowing to activate a cell when the different station address flag bit = false stored in the CU; when the different station address flag bit=true stored in the CU, the cell is allowed to be activated only if two RUs in the cell are connectable;
when a CU is in state transition:
if the Active activation message of another CU is received and the ping-pong protection timer is overtime, or the period inquiry result is that the CU has no Active state in the network, triggering to establish NG connection, allowing to accept F1-C and F1-U connection, starting the ping-pong protection timer, and informing an OSS that the current CU enters the Active state;
if all F1 connections are abnormal, NG connection is abnormal or self is abnormal, and the ping-pong protection timer is overtime, locking NG connection, sending an Active Request message to the paired CU, starting the ping-pong protection timer, and informing the OSS that the current CU enters a Standby state;
and the logic HB link breaking action sends an Active Request to the OSS and receives the confirmation message.
The reliability of the system can be improved through a state machine algorithm of CU and DU and a data transmission channel corresponding to the CU and DU. The layering method of CU and DU can reduce the influence of equipment abnormality on the system to the maximum extent.
The general abbreviations used in this application are as follows: all shorthand is to provide clear Chinese definition, all the definitions to be supplemented are marked in the text, and all the definitions below are supplemented completely.
CU: a Central Unit;
DU: a Distributed Unit distribution Unit;
RU: a Radio Unit Radio frequency Unit;
CPRI: common Public Radio Interface general public wireless interface;
M-Plane: a Management Plane;
OSS: operation Support Systems operating a support system;
HB: heart beat.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the equipment examples, what has been described above is merely a preferred embodiment of the invention, which, since it is substantially similar to the method examples, is described relatively simply, as relevant to the description of the method examples. The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, since modifications and substitutions will be readily made by those skilled in the art without departing from the spirit of the invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (7)
1. A method for improving the operational stability of a 5G mobile communication base station, comprising the steps of:
1) DU forwarding CPRI processing module: the working mode of the CPRI processing module is controlled by M-Plane of DU;
2) DU data processing module: for the redundant part of the DU data processing module, on one hand, the state of the main DU and the state of the backup DU are communicated through heartbeat information, and on the other hand, the connected CPRI processing module and the CU connection state are monitored, so that a main and backup DU switching algorithm controlled by the data processing module is realized;
3) CU module: side redundancy processing is performed for a CU while taking into account the status of the DUs connected thereto and the core network connection status.
2. The method for improving the operation stability of a 5G mobile communication base station according to claim 1, wherein: and 1) adding CPRI forwarding path connection between CPRI processing modules, and forwarding received RU data to a CPRI processing module of another DU device by the DU.
3. A method for improving the operation stability of a 5G mobile communication base station according to claim 2 or 3, characterized in that: the M-Plane control of the DU of step 1) is specifically as follows:
the received data processing module works in a baseband receiving and transmitting mode command, and the CPRI forwarding mode is switched to the baseband receiving and transmitting mode;
the received data processing module works in a CPRI forwarding mode command, and the baseband receiving and transmitting mode is switched to the CPRI forwarding mode;
the received data processing module works in a CPRI forwarding mode command, the DU CPRI processing module is started, and the CPRI forwarding mode is switched in;
the received data processing module works in a baseband receiving and transmitting mode command or does not receive the data processing module command, the DU CPRI processing module is started, and the CPRI forwarding mode is shifted.
4. The method for improving the operation stability of a 5G mobile communication base station according to claim 1, wherein: the DU data processing module includes Standby, active, faulty states.
5. The method for improving the operation stability of a 5G mobile communication base station according to claim 4, wherein: the redundant processing process of the DU data processing module specifically comprises the following steps:
when the DU data processing module is started up:
if the main and Standby flag bit = second stored in the current DU, setting the connected CPRI processing module as a CPRI forwarding mode, locking the F1 connection, and enabling the DU data processing module to enter a Standby state or a state; if the main and standby flag bit = master stored in the current DU, setting the connected CPRI processing module as a baseband receiving and transmitting mode, triggering to establish F1 connection, and enabling the DU data processing module to enter an Active state;
when the DU data processing module is in the Standby state or the Faulty state:
periodically polling whether DU in an Active state exists in the network through the HB heartbeat line interface;
HB heartbeat line broken link action, namely, sending DU Active Request to CU and receiving a reply message indicating reject; reporting HB heartbeat line broken chain alarm;
when the DU data processing module is in an Active state:
reporting HB heartbeat line broken chain alarm;
current working F1 connection abnormal action: attempting to establish F1 connection with CU in Standby state, and establishing successfully; reporting F1 connection abnormality alarm;
when the DU data processing module performs working mode conversion:
if the main activation message of the paired data processing module is received and the ping-pong protection timer is overtime, or the period inquiry result is that the Active data processing module does not act in the network, the DU data processing module is switched from the Standby state to the Active state, the connected CPRI processing module is set to be in a baseband transceiving mode, the F1 connection is triggered to be established, and the ping-pong protection timer is started;
if the two Fl connections are abnormal, the self is abnormal or all RRUs are lost, and the ping-pong protection timer is overtime, the DU data processing module is switched from an Active state to a Standby state, the connected CPRI processing module is set to be in a CPRI forwarding mode, the F1 connection is locked, a main activation message is sent to the paired data processing module, the ping-pong protection timer is started, and corresponding alarm treatment is carried out.
6. The method for improving the operation stability of a 5G mobile communication base station according to claim 1, wherein: the CU data processing module includes Standby, active two states.
7. The method for improving the operation stability of a 5G mobile communication base station according to claim 1, wherein: the redundancy processing process of the CU data processing module is specifically as follows:
when the CU starts up:
if the main and Standby flag bit = second stored in the current CU, locking the NG connection, notifying the OSS, and enabling the current CU to enter a Standby state;
if the main and standby flag bit = master stored in the current CU, triggering to establish NG connection, informing an OSS, and enabling the current CU to enter an Active state;
CU is in Standby state:
periodically polling CUs in the existing Active state in the network through HB heartbeat links;
HB chain scission action: sending an Active Request to an OSS and receiving a reply message with the content of Reject;
when CU is in Active state:
establishing F1 connection, establishing NG connection, and allowing to activate a cell when the different station address flag bit = false stored in the CU; when the different station address flag bit=true stored in the CU, the cell is allowed to be activated only if two RUs in the cell are connectable;
when a CU is in state transition:
if the Active activation message of another CU is received and the ping-pong protection timer is overtime, or the period inquiry result is that the CU has no Active state in the network, triggering to establish NG connection, allowing to accept F1-C and F1-U connection, starting the ping-pong protection timer, and informing an OSS that the current CU enters the Active state;
if all F1 connections are abnormal, NG connection is abnormal or self is abnormal, and the ping-pong protection timer is overtime, locking NG connection, sending an Active Request message to the paired CU, starting the ping-pong protection timer, and informing the OSS that the current CU enters a Standby state;
and the logic HB link breaking action sends an Active Request to the OSS and receives the confirmation message.
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