CN108200594B

CN108200594B - Service processing method and device

Info

Publication number: CN108200594B
Application number: CN201810005456.5A
Authority: CN
Inventors: 付永魁
Original assignee: Wuhan Hongxin Technology Development Co Ltd
Current assignee: Wuhan Hongxin Technology Development Co Ltd
Priority date: 2018-01-03
Filing date: 2018-01-03
Publication date: 2021-12-24
Anticipated expiration: 2038-01-03
Also published as: CN108200594A

Abstract

The invention provides a service processing method, which is applied to a radio remote unit, wherein the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit through two interfaces, or different baseband boards of the same baseband processing unit, or different baseband boards of different baseband processing units; the method comprises the following steps: controlling two interfaces of a radio remote unit to carry out main and standby competition, and distinguishing a main interface from a standby interface; and according to the connection relation between the radio remote unit and the baseband board and a preset service backup method, carrying out service backup processing on the radio remote unit in the normal operation process and/or when a main interface has a service fault. The scheme can execute the service backup by combining the mode that the radio remote unit is accessed to the baseband processing unit in the normal operation process and/or when the radio remote unit has the service fault, and the service backup efficiency is higher.

Description

Service processing method and device

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a service processing method and apparatus.

Background

At present, a mainstream Base station mostly adopts a structure in which a baseband processing Unit (BBU) and a Radio Remote Unit (RRU) are separated, the BBU and the RRU are usually interconnected by using an optical fiber, and an Interface between the BBU and the RRU is usually called an IR (Interface between RRU and BBU, IR) Interface or a CPRI (Common Public Radio Interface, CPRI) Interface. The networking modes of the BBU and the RRU of the base station system comprise a bus type, a star type, a ring type and the like. In some specific occasions, such as coverage along a high-speed railway, a ring-shaped network is generally adopted between the BBU and the RRU. The disadvantage of the ring networking is that a fault of a certain RRU or a certain segment of optical transmission link in the ring network easily causes a plurality of subsequent RRUs to have faults, thereby affecting services.

The service backup can be used for carrying out backup processing on service data of the RRU in time when the RRU or the optical transmission link fails, carrying out service reconstruction and recovery, reducing call drop time or preventing a user from call drop to cause a larger range of system failures.

In the prior art, a method for processing the above faults in the RRU ring network is to simply execute fault self-healing or fixed service backup. The fault self-healing is to detect the faulty RRU, and then try to access the BBU from the opposite direction of the normal working service flow direction of the RRU ring network, and the fault self-healing can cause a long-time call drop of a user. The fixed service backup is that when two ends of the RRU ring network are connected to the same BBU, the RRU in the ring network takes downlink data from two directions of the ring network in real time and compares the downlink data, and selects the data channel with the best quality as a working channel. The fixed service backup does not meet the networking mode diversity of the RRU and the BBU, is only suitable for a specific fault scene, and has great limitation in use.

Disclosure of Invention

Based on the defects and shortcomings of the prior art, the invention provides a service processing method, according to the connection relationship between the RRU and the baseband board, in the normal operation process and/or when the main interface of the RRU has a service fault, a preset service backup method is selected for service backup, so that the service backup method is more suitable for the RRU access system mode, the service backup is more reliable, the call drop of a user can be further prevented, and the user experience is improved.

A service processing method is applied to a radio remote unit, wherein the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit or different baseband boards of different baseband processing units through two interfaces; the method comprises the following steps:

controlling two interfaces of the remote radio unit to carry out main and standby competition, and distinguishing a main interface from a standby interface;

according to the connection relation between the radio remote unit and the baseband board and a preset service backup method, carrying out service backup processing on the radio remote unit in the normal operation process and/or when a service fault occurs on the main interface; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board.

Preferably, after distinguishing the main interface from the standby interface, the method further includes:

establishing a primary cell for the primary interface and establishing a standby cell for the standby interface;

and when the standby cell works normally, establishing a downlink common control channel which is irrelevant to the user for the standby cell, and generating corresponding downlink data.

Preferably, the performing, according to the connection relationship between the remote radio unit and the baseband board and a preset service backup method, a service backup process on the remote radio unit in a normal operation process and/or when a service failure occurs in the main interface includes:

and controlling a baseband processing unit connected with the radio remote unit to delete a main cell, a standby cell and a user context of the radio remote unit, and controlling the radio remote unit to reset and restart.

when the main interface has a service fault, switching the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface;

if the baseband board connected with the reset main interface is the same as the baseband board connected with the main interface, controlling the baseband board connected with the main interface to delete the user context;

if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, the baseband processing unit connected with the main interface is controlled to delete the user context associated with the main cell and the main cell, the standby cell of the reset main interface is controlled to bear the user service, and when the service failure of the reset standby interface is recovered, the standby cell is established for the reset standby interface.

Preferably, the performing, according to the connection relationship between the remote radio unit and the baseband board and a preset service backup method, a service backup process on the remote radio unit in a normal operation process and/or when a service failure occurs in the main interface includes: if the baseband board connected with the main interface is different from the baseband board connected with the standby interface, controlling a baseband processing unit connected with the main interface to backup the user context associated with the main cell to the baseband processing unit connected with the standby interface in real time, and associating the backed-up user context with the standby cell;

Preferably, before controlling the two interfaces of the remote radio unit to perform active/standby competition and distinguishing the main interface from the standby interface, the method further includes:

and respectively allocating different IP addresses to the two interfaces of the remote radio unit.

Preferably, the main interface and the standby interface both carry uplink data and downlink data between the remote radio unit and the antenna, and the remote radio unit only processes data received or sent by the main interface.

A service processing device is applied to a radio remote unit, wherein the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit through two interfaces, or different baseband boards of the same baseband processing unit, or different baseband boards of different baseband processing units; the device includes:

the starting processing unit is used for controlling the two interfaces of the remote radio unit to carry out main and standby competition and distinguishing a main interface and a standby interface;

the backup processing unit is used for controlling the baseband processing unit connected with the radio remote unit to perform service backup processing on the radio remote unit in the normal operation process and/or when the main interface has a service fault according to the connection relation between the radio remote unit and the baseband board and a preset service backup method; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board.

Preferably, the apparatus further comprises:

a cell establishing unit, configured to establish a primary cell for the primary interface and a secondary cell for the secondary interface; and when the standby cell works normally, establishing a downlink common control channel which is irrelevant to the user for the standby cell, and generating corresponding downlink data.

Preferably, the backup processing unit controls the baseband processing unit connected to the radio remote unit to have a service failure at the main interface according to a connection relationship between the radio remote unit and a baseband board and a preset service backup method, and is specifically configured to:

controlling a baseband processing unit connected with the remote radio unit to perform switching processing on the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface; if the baseband board connected with the reset main interface is the same as the baseband board connected with the main interface, controlling the baseband board connected with the main interface to delete the user context; if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, the baseband processing unit connected with the main interface is controlled to delete the user context associated with the main cell and the main cell, the standby cell of the reset main interface is controlled to bear the user service, and when the service failure of the reset standby interface is recovered, the standby cell is established for the reset standby interface.

Preferably, the backup processing unit controls, according to a connection relationship between the radio remote unit and a baseband board and a preset service backup method, the baseband processing unit connected to the radio remote unit to perform service backup processing on the radio remote unit in a normal operation process and/or when a service failure occurs at the main interface, and is specifically configured to: and if the baseband board connected with the main interface is different from the baseband board connected with the standby interface, controlling the baseband processing unit connected with the main interface to backup the user context associated with the main cell to the baseband processing unit connected with the standby interface in real time, and associating the backed-up user context with the standby cell. When the main interface has a service fault, switching the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface; if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, the baseband processing unit connected with the main interface is controlled to delete the user context associated with the main cell and the main cell, the standby cell of the reset main interface is controlled to bear the user service, and when the service failure of the reset standby interface is recovered, the standby cell is established for the reset standby interface.

Preferably, the apparatus further comprises:

and the address allocation unit is used for allocating different IP addresses for the two interfaces of the remote radio unit respectively.

Preferably, the main interface and the standby interface distinguished by the start processing unit control baseband board both bear uplink data and downlink data between the remote radio unit and the antenna, and the remote radio unit only processes data received or sent by the main interface.

The service processing method provided by the invention is applied to a radio remote unit, wherein the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit through two interfaces, or different baseband boards of the same baseband processing unit, or different baseband boards of different baseband processing units; the method comprises the following steps: controlling two interfaces of a radio remote unit to carry out main and standby competition, and distinguishing a main interface from a standby interface; according to the connection relation between the radio remote unit and the baseband board and a preset service backup method, carrying out service backup processing on the radio remote unit in the normal operation process and/or when a service fault occurs on the main interface; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board. The remote radio unit in the technical scheme of the invention can be accessed into the system in various ways, and the service backup is carried out according to the specific way of accessing the remote radio unit into the system in the normal operation process and/or when the remote radio unit has a service fault, and the backup way is more suitable for the system structure, so that the service backup scenes of different networking ways can be met, the service backup efficiency is more guaranteed, the call drop can be prevented, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic diagram of a ring network of remote radio units according to an embodiment of the present invention;

fig. 2 is a schematic diagram of another ring networking of remote radio units according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another ring networking of remote radio units according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a service processing method according to an embodiment of the present invention;

fig. 5 is a schematic flow chart illustrating main-standby competition of optical ports of the remote radio unit according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a service processing apparatus according to an embodiment of the present invention;

fig. 7 is a timing diagram of a service backup process when a baseband board connected to a reset main interface is the same as a baseband board connected to a reset main interface in a warm standby mode according to an embodiment of the present invention;

fig. 8 is a timing diagram of service backup processing performed in the warm standby mode when the baseband board connected to the reset main interface is different from the baseband board connected to the main interface and located in different baseband processing units according to the embodiment of the present invention;

fig. 9 is a timing diagram of service backup processing when a baseband board connected to a reset main interface is different from a baseband board connected to a main interface and located in the same baseband processing unit in a hot standby mode according to an embodiment of the present invention;

fig. 10 is a timing diagram of service backup processing performed in the hot standby mode when the baseband board connected to the reset main interface is different from the baseband board connected to the main interface and located in different baseband processing units according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention discloses a service processing method, which is applied to a radio remote unit, wherein the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit, or different baseband boards of different baseband processing units through two interfaces;

specifically, at present, a mainstream Base station mostly adopts a structure in which a baseband processing Unit (BBU) and a Radio Remote Unit (RRU) are separated, the BBU and the RRU are usually interconnected by using an optical fiber, and an Interface between the BBU and the RRU is usually called an IR (Interface between RRU and BBU, IR) Interface or a CPRI (Common Public Radio Interface, CPRI) Interface. Therefore, in the embodiment of the present invention, the interface is an optical port, such as an IR optical port. The technical scheme of the embodiment of the invention is used for solving the problem of service fault processing of the RRU when the annular networking is adopted between the BBU and the RRU, so that the RRU and the BBU adopt the annular networking mode for networking in the embodiment of the invention.

The technical scheme of the embodiment of the invention supports several conditions of single-baseband-board inner annular networking, single-base-station inner cross baseband-board annular networking and BBU cross annular networking, namely the technical scheme of the embodiment of the invention is suitable for several conditions that a radio remote unit RRU is simultaneously connected with the same baseband board of one BBU through two optical ports of the RRU, or different baseband boards of the same BBU, or different baseband boards of different BBUs.

Fig. 1 to 3 respectively show specific networking modes of the single baseband board inner ring networking, the single base station inner cross baseband board ring networking, and the cross BBU ring networking. Specifically, fig. 1 shows a single baseband board inner ring networking mode, where two ends of a ring are connected to RRUs using different optical ports of the same baseband board of the same BBU, and multiple RRUs are connected in sequence to form a ring network.

Fig. 2 shows a single base station intra-span baseband board ring-shaped networking mode, where a plurality of RRUs are sequentially connected to form a loop, and two ends of the loop are connected to optical ports of different baseband boards of the same BBU.

Fig. 3 shows a BBU-spanning ring network, where a plurality of RRUs are sequentially connected to form a loop, and two ends of the loop are connected to optical ports of baseband boards of different BBUs.

In the examples of fig. 1 to fig. 3, the service processing boards of the baseband processing unit BBU are a CCU and a BPU. Wherein, the CCU is a master control clock board, and the BPU is a baseband board.

It should be noted that, in a scenario of a cross-baseband-board ring network, all users connected to a certain RRU in an RRU ring are processed by only one baseband board at the same time, the baseband board is defined as a main baseband board of the RRU, and a baseband board in another direction on the RRU ring network is called a standby baseband board.

The different types of networking modes enable the baseband board to have different processing processes for the cell and the user context data, so that when a service fault occurs in the RRU, a fault processing method suitable for the current networking mode should be adopted for processing, so as to ensure that the fault processing method can quickly remove the service fault. The technical scheme of the embodiment of the invention aims to respectively provide an applicable fault processing method aiming at the different types of networking modes. The technical scheme of the embodiment of the invention is described in detail below.

Referring to fig. 4, a service processing method provided in the embodiment of the present invention includes:

s401, controlling two interfaces of a radio remote unit to perform main-standby competition, and distinguishing a main interface and a standby interface;

specifically, the RRU generally has two optical ports. And the RRU main optical port (main interface) is an optical port of the RRU upper connection BBU. The RRU unloads downlink IQ data from the optical port and transmits the downlink IQ data to the antenna port, and multiplexes uplink IQ data from the antenna and transmits the multiplexed data from the optical port to the main baseband board. The spare optical port (spare interface) of the RRU is another optical port of the RRU, and mainly plays a role of service relay of each RRU in the downlink direction of the RRU ring.

The embodiment of the invention sets that ring network topological relation is configured in advance at the BBU side, and specifically comprises the following steps: the position of the RRU in the RRU ring network, the serial number of the head and tail base stations of the RRU ring network, the serial number of the baseband board, the serial number of the optical port on the baseband board, the cell information to be established in the RRU and the like. The head of the RRU ring network is the optical port where the main baseband board expected under normal conditions is located, and the tail is the optical port where the standby baseband board expected under normal conditions is located. Under normal conditions, the downlink service flow direction (i.e., the service flow direction from the base station to the air interface) is the direction corresponding to the RRU from the ring head to the ring tail.

The embodiment of the invention also sets that after the RRU is powered on and started, the two IR ports have a process of main-standby competition. The RRU is electrified to self-detect the states of two optical interfaces, and for the optical interface with out-of-position (LOP), no Light (LOS) and LOSs of frame synchronization (LOF), the working state is abnormal, and the RRU cannot work in the state of the main optical interface. If the states of the two optical ports are normal, the working mode of the IR port is set to be that the IR port of the uplink optical port has priority, subsequent links such as version updating, time delay measurement and configuration, parameter configuration, cell establishment and the like are preferentially carried out, and the established cell is the main cell.

The main/standby competition flow of the IR port under the normal state of the optical port is as shown in fig. 5, it is noted that the flow does not consider the link of inconsistent upgrading of versions, when the optical ports of different versions are upgraded to the same version, the RRU will restart, and the subsequent main/standby competition flow is consistent with fig. 5. The uplink optical port has priority in the active-standby competition of the IR port, if the RRU does not work in time in the state that the uplink optical port is the main optical port after being electrified, the cascade optical port delays T1 seconds to wait for the RRU to finish corresponding work, the time setting of T1 ensures that the RRU can access a BBU from a certain optical port to finish all links established from IP address allocation to a cell under normal conditions, and the time is not too long to ensure the speed of the system for providing services.

S402, according to the connection relation between the radio remote unit and a baseband board and a preset service backup method, carrying out service backup processing on the radio remote unit in the normal operation process and/or when a service fault occurs on the main interface; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board.

Specifically, after the RRU controls the optical ports to complete the active/standby competition and distinguishes the main optical port (interface) and the standby optical port (interface), for convenience of subsequent processing, the expected flow direction and the service backup mode of the RRU ring network need to be configured to the optical port corresponding to the RRU. The desired access (known by combining RRU ring network configuration) of the RRU is the "upper optical connection port", and at this time, another optical port of the RRU is the "cascade optical connection port". In addition, the specific working mode also needs to distinguish a service backup mode.

The foregoing service failure is caused by an abnormal function of the RRU ring network, for example, a certain RRU in the ring network detects an out-of-position (LOP)/no Light (LOS)/frame synchronization LOSs (LOF) alarm at the main optical port or receives an optical fiber switching control word from the main optical port. The preset service backup modes provided for the optical interface of the RRU in the embodiment of the invention comprise three modes, namely cold standby, warm standby and hot standby. The RRU is restarted when a fault occurs, and the user context in the original cell and the original cell is deleted; in the warm standby mode, when a service fault occurs at a main optical port of the RRU, the standby optical port takes over the service of the main optical port, a cell does not need to be rebuilt, and the user context in the original cell is deleted; in the hot standby mode, in the normal operation process, the user context is backed up in real time, and when a service fault occurs at the main optical port of the RRU, the standby optical port takes over the service of the main optical port, so that the service can be recovered.

According to the service backup mode configured for the IR port in the embodiment of the invention, the IR port can be divided into: one of a common mode optical port, a cascade mode optical port, a main/standby mode optical port, a load sharing mode optical port, a cold standby ring network upstream optical port, a cold standby ring network cascade optical port, a warm standby/warm standby upstream optical port, and a warm standby/warm standby cascade optical port.

When a service fault occurs on a main optical port of the RRU, the embodiment of the present invention performs service backup processing on the RRU by using a service backup method configured for the main optical port in advance according to a connection mode in which the main optical port is accessed to the BBU. For example, if a warm standby service backup method is configured in advance for a main optical port of a certain RRU, when a service failure occurs in the main optical port, the warm standby method is used to perform service backup processing on the RRU, so that the RRU resumes a normal service.

It should be noted that, in the embodiment of the present invention, the RRU has two optical ports, which are a main optical port and a standby optical port, respectively. Under normal conditions, the main optical port realizes service communication, and when the main optical port has service failure and causes service interruption, the embodiment of the invention executes the switching processing of the main optical port and the spare optical port of the RRU, and the spare optical port replaces the main optical port to realize service communication and recover the service communication.

The remote radio unit in the technical scheme of the embodiment of the invention can be accessed into the system in various ways, when the remote radio unit has a service fault, the service backup is carried out according to the specific way of accessing the remote radio unit into the system and by combining a preset service backup method, and the backup way is more suitable for the system structure, so that the service backup scenes of different networking ways can be met, the service backup efficiency is more guaranteed, the call drop can be prevented, and the user experience is improved.

Optionally, in another embodiment of the present invention, after distinguishing the main interface from the standby interface, the method further includes:

Specifically, for a scene of the inter-baseband board ring networking, under the condition that an inter-board baseband resource pool is not supported, a certain RRU in the RRU ring corresponds to a cell established in a main baseband board and is a main cell; in order to reduce the user call drop time, a cell, which is called a standby cell, needs to be established in the standby baseband board at the same time.

In the embodiment of the invention, for the scene of the cross-baseband-board annular networking, the cell established for the baseband board connected with the main interface is the main cell, and the cell established for the baseband board connected with the standby interface is the standby cell.

And when the established standby cell is checked to work normally, the embodiment of the invention establishes a downlink common control channel which is irrelevant to the user for the normally working standby cell and generates corresponding downlink data. It can be understood that the standby cell after the above processing is a cell which has a communication channel and can implement service communication, and the only difference between the standby cell and the primary cell is that there is no specific user service on the standby cell. When the main cell has a fault, the user service is directly transferred to the standby cell, so that the service can be continued, and the problem that the continuity of the user service is influenced because a downlink control channel is newly established for the standby cell when the service needs to be transferred, so that the time is delayed is solved.

Based on the above processing, when the RRU main interface has a service failure, the main interface and the standby interface may be switched, and the standby cell of the standby interface replaces the main cell of the main interface to perform service communication.

Optionally, in another embodiment of the present invention, the performing, according to the connection relationship between the radio remote unit and the baseband board and a preset service backup method, service backup processing on the radio remote unit in a normal operation process and/or when a service failure occurs in the main interface includes:

Specifically, the service backup method provided by the embodiment of the invention is a cold backup method. In the cold standby method, when a service fault occurs in the RRU, a baseband processing unit connected with the RRU is controlled to delete a main cell, a standby cell and a user context established for the RRU, and simultaneously, the RRU is controlled to be reset and restarted immediately. After the RRU is reset and restarted, the RRU competes for the main interface and the standby interface again, the baseband board connected with the RRU establishes a cell for the RRU again, service connection is reestablished, and service communication is recovered.

specifically, the service backup method provided by the embodiment of the present invention is called warm backup. In the warm standby method, the cell context of the service fault RRU always exists in the baseband processing unit, when the RRU main optical interface (main interface) has a fault, the main optical interface and the standby optical interface are switched, and the backup cell of the main cell backed up by the standby optical interface bears the service.

When a service fault occurs to the main optical port of the RRU and the standby optical port (standby interface) is normal, the embodiment of the present invention switches the main optical port and the standby optical port, and simultaneously switches the parameter configuration of the main optical port and the standby optical port. After switching, the original main optical port becomes a standby optical port, and for convenience of distinguishing, the embodiment of the invention is called as a standby optical port (standby interface); the original slave optical port is a master optical port, and for the convenience of distinction, the embodiment of the present invention is called a reset master optical port (reset master interface). It can be understood that, in the warm standby mode, the standby optical port transmits the data of the downlink common control channel irrelevant to the user in the standby cell in real time, so that the standby cell of the main cell of the original main optical port can rapidly bear the service after switching, and the original user can reside in the cell and re-access the network.

Since the original cell and user context of the RRU are set based on the baseband processing unit connected to the original main optical port of the RRU, after the main optical port and the standby optical port of the RRU are switched, the user context associated with the cell and the cell of the original RRU is deleted according to the situation, if the baseband boards that reset the connection between the main optical port and the original main optical port are the same.

in this case, the backup process is as shown in fig. 7. Wherein the "first control word" may be a predefined control word, the main role of which is to convey fault information. In the practical application process, in consideration of compatibility with the existing mode and saving bandwidth resources as much as possible, the existing control words can be reused, namely, the existing control words are modified to play a role in transmitting fault information. For example, for a first control word, a z.80 control word in the CPRI specification may be multiplexed, where the first control word includes a flag bit for identifying that a link failure is detected, and in the conventional format of the control word, z.80.0 is used to indicate an alarm RRU ID, and z.80.1 indicates specific alarm information. Since the baseband board connected with the reset main optical port is the baseband board connected with the original main optical port, the cell established on the baseband board can be directly used by the reset main optical port without deleting reconstruction, and at the moment, only the user context on the baseband board needs to be deleted.

In this case, since the baseband board connected to the reset main optical port is not the same baseband board as the baseband board connected to the original main optical port, and the main cell established for the original main optical port cannot be used by the reset main optical port, the main cell backup cell on the baseband board connected to the reset main optical port needs to carry user traffic. And directly deleting the main cell on the baseband processing unit connected with the original main optical port and the user context related to the main cell. When the service failure of the original main optical interface, that is, the reset standby optical interface, is recovered, the embodiment of the present invention re-establishes the cell for the reset standby optical interface (that is, the original main optical interface that has recovered the failure), that is, establishes the standby cell. The cell is used as the standby cell of the reset main optical interface cell, when the reset main optical interface fails, the reset main optical interface and the reset standby optical interface are switched, and the standby cell established on the reset main optical interface is used for bearing user services to prevent user services from being interrupted.

If the baseband board to which the reset master interface is connected is different from the baseband board to which the master interface is connected and is located in a different baseband processing unit, the backup process is as shown in fig. 8.

if the baseband board connected with the main interface is different from the baseband board connected with the standby interface, controlling a baseband processing unit connected with the main interface to backup the user context associated with the main cell to the baseband processing unit connected with the standby interface in real time, and associating the backed-up user context with the standby cell;

specifically, the service backup method provided by the embodiment of the present invention is called hot standby. In the hot standby method, a cell context and a related user context of a service failure RRU always exist in a baseband processing unit, if baseband processing boards connected with main and standby optical ports are different, the user context needs to be backed up in real time, when a main optical port (main interface) of the RRU fails, the main and standby optical ports are switched, and a backup cell of the main cell backed up by the standby optical port and the backup user context undertake services.

When a service fault occurs to the main optical port of the RRU and the standby optical port (standby interface) is normal, the embodiment of the present invention switches the main optical port and the standby optical port, and simultaneously switches the parameter configuration of the main optical port and the standby optical port. After switching, the original main optical port becomes a standby optical port, and for convenience of distinguishing, the embodiment of the invention is called as a standby optical port (standby interface); the original slave optical port is a master optical port, and for the convenience of distinction, the embodiment of the present invention is called a reset master optical port (reset master interface). It can be understood that, in the hot standby mode, the standby optical port backs up the user context of the main optical port in real time, so that the main optical port can be reset after switching, and the main optical port can directly continue to bear services.

Since the original cell and user context of the RRU are both set based on the baseband board connected to the original main optical port of the RRU, after the main optical port and the standby optical port of the RRU are switched, the cell and user context of the original RRU are deleted as appropriate according to whether the baseband board connecting the main optical port and the original main optical port is reset to be the same.

In this case, the backup process is as shown in fig. 9. When a User (UE) is accessed, a main control clock board establishes a user context on the main board and is associated with a main/standby cell, and after the user context and a backup user context are respectively established on the main baseband board and are sent to the standby baseband board, when a service of a main optical port of an RRU fails, the RRU initiates and finally controls the main control clock board to complete the switching of the main optical port and the standby cell to be a full flow of the main cell.

If the baseband board connected with the reset main interface is different from the baseband board connected with the main interface and is located in different baseband processing units, controlling the baseband processing unit connected with the main interface to delete the user context associated with the main cell and the main cell, controlling the standby cell of the reset main interface to bear user service, and establishing the standby cell for the reset standby interface when the service fault of the reset standby interface is recovered.

In this case, as shown in fig. 10, when a User (UE) accesses, the baseband processing unit connected to the original main optical port, in addition to establishing a user context in the present device and associating with the main cell, also backs up the user context in the baseband processing unit connected to the original standby optical port through a private X2 message and associates with the original standby cell. When the service of the main optical port of the RRU fails, the RRU initiates and finally the network management OMC intervenes to complete the switching of the main optical port and the standby optical port and the whole process of the standby cell to the main cell.

It should be noted that, for the case that the baseband board connected to the reset main interface is the same as the baseband board connected to the main interface, because the cell context and the user context are always reserved in the master clock board where the main baseband board and the main baseband board are located in the hot standby mode, the service process can be continued only by switching the main optical interface and the standby optical interface without deleting and backing up the cell or the user context in real time.

Optionally, in another embodiment of the present invention, before controlling the two interfaces of the remote radio unit to perform active/standby contention and distinguishing the main interface from the standby interface, the method further includes:

Specifically, the technical solution of the embodiment of the present invention is applied to RRU ring network networking, and each optical port of each RRU in the ring network needs to be assigned with a unique IP address, so that the IP addresses of each optical port of each RRU in the RRU ring network are different, so as to communicate with the BBU from two directions of the ring at the same time.

The RRU may be located at different baseband boards from head to tail, so as to avoid that different baseband boards allocate the same IP address to the corresponding RRU optical port. The specific allocation method is related to the BBU internal implementation, and one feasible method is as follows:

the IP address allocated to the RRU optical port is set as a private address, only the private address is visible in the baseband board, the allocable IP address range of each baseband board of the whole base station system is the same, the IP addresses are continuous, and the allocable IP address quantity of each baseband board is as follows: the baseband board supports the maximum number of the accessed RRUs 2+ protection offset.

If the access direction of the RRU is from the ring tail of the RRU to the ring head, the RRU indicates normal access from the main optical port, and at the moment, the baseband board allocates an IP address for the RRU optical port according to the IP address from small to large; otherwise, the reverse access is indicated, and at this time, the baseband board allocates an IP address to the RRU optical port according to the IP address from large to small. For example, the maximum number of the RRUs supported by the base band board is 12, the protection offset is 10, and the IP address range is 192.168.11-192.168.45, then the address allocated to the first normally accessed RRU in the base band board is 192.168.11, and the address allocated to the first reverse accessed RRU is 192.168.45.

According to the method, the IP addresses allocated to different optical ports of the same RRU are not the same.

Optionally, in another embodiment of the present invention, both the main interface and the standby interface bear uplink data and downlink data between the remote radio unit and the antenna, and the remote radio unit only processes data received or sent by the main interface.

Specifically, in the embodiment of the present invention, the RRU in the RRU ring network has a dual homing characteristic, and the BBU and the RRU support dual homing management and service processing.

The dual homing means that the ring network RRU can simultaneously access the BBU from two optical ports configured by the RRU to complete the work of IP address allocation, channel establishment, time delay measurement and configuration, cell establishment, and the like. The two optical ports can be respectively connected to the same baseband board of the same BBU, different baseband boards of the same BBU and different BBUs.

The BBU sets the working modes of the two IR ports of the RRU by combining the ring network parameters configured by the user, and the RRU finally determines that the two IR ports work in a main optical port or a standby optical port state.

The main optical port and the standby optical port are all loaded with data sent to the antenna port by the RRU, but the RRU only selects the data on the main optical port and transmits the data through the antenna after processing; similarly, data received by the RRU from the antenna is uploaded to the BBU only from the main optical port; the RRU system clock comes from the main optical port.

When the main optical port and the standby optical port are connected with different base band boards, the base band board connected with the main optical port is a main base band board and a corresponding cell is a main cell, the base band board connected with the standby optical port is a standby base band board and the established cell is a standby cell. The base station normally transmits and receives user data on the main cell, and does not transmit and receive user data but transmits downlink common control channel data irrelevant to the user on the standby cell. And the RRU informs the BBU of establishing the main/standby state of the cell in the cell establishment response, and the BBU can deduce the main/standby states of two optical ports of the RRU according to the main/standby state.

The embodiment of the invention discloses a service processing device, which is applied to a radio remote unit, wherein the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit, or different baseband boards of different baseband processing units through two interfaces; referring to fig. 6, the apparatus includes:

a start processing unit 601, configured to control two interfaces of the remote radio unit to perform active/standby contention, and distinguish a main interface from a standby interface;

a backup processing unit 602, configured to control, according to a connection relationship between the radio remote unit and a baseband board and a preset service backup method, a baseband processing unit connected to the radio remote unit to perform service backup processing on the radio remote unit in a normal operation process and/or when a service failure occurs in the main interface; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board.

Specifically, please refer to the contents of the above method embodiments for the specific working contents of each unit in this embodiment, which are not described herein again.

Optionally, in another embodiment of the present invention, the apparatus further includes:

Specifically, please refer to the content of the method embodiment for the specific working content of the cell establishing unit in this embodiment, which is not described herein again.

Optionally, in another embodiment of the present invention, the backup processing unit 602, according to a connection relationship between the radio remote unit and a baseband board and a preset service backup method, controls the baseband processing unit connected to the radio remote unit to perform service backup processing on the radio remote unit when a service failure occurs in the main interface, and specifically is configured to:

Specifically, please refer to the contents of the above method embodiments for the specific working contents of the backup processing unit 602 in this embodiment, which are not described herein again.

controlling a baseband processing unit connected with the remote radio unit to perform switching processing on the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface; if the baseband board connected with the reset main interface is the same as the baseband board connected with the main interface, controlling the baseband board connected with the main interface to delete the user context; and if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, controlling a baseband processing unit where the main interface is located to delete the user context associated with the main cell and the main cell, controlling the standby cell of the reset main interface to bear user service, and establishing the standby cell for the reset standby interface when the service fault of the reset standby interface is recovered.

Optionally, in another embodiment of the present invention, the backup processing unit 602, according to a connection relationship between the radio remote unit and a baseband board and a preset service backup method, controls the baseband processing unit connected to the radio remote unit to perform service backup processing on the radio remote unit in a normal operation process and/or when a service failure occurs in the main interface, and is specifically configured to: if the baseband board connected with the main interface is different from the baseband board connected with the standby interface, controlling a baseband processing unit connected with the main interface to backup the user context associated with the main cell to the baseband processing unit connected with the standby interface in real time, and associating the backed-up user context with the standby cell; when the main interface has a service fault, switching the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface; if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, the baseband processing unit connected with the main interface is controlled to delete the user context associated with the main cell and the main cell, the standby cell of the reset main interface is controlled to bear the user service, and when the service failure of the reset standby interface is recovered, the standby cell is established for the reset standby interface.

Specifically, please refer to the contents of the above method embodiments for the specific working contents of the address allocation unit in this embodiment, which are not described herein again.

Optionally, in another embodiment of the present invention, the main interface and the standby interface distinguished by the start processing unit controlling the baseband board both bear uplink data and downlink data between the remote radio unit and the antenna, and the remote radio unit only processes data received or sent by the main interface.

Specifically, please refer to the contents of the above method embodiments for the specific working contents of the above parts in this embodiment, which are not described herein again.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A service processing method is characterized in that the method is applied to a radio remote unit, and the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit, or different baseband boards of different baseband processing units through two interfaces; the method comprises the following steps:

controlling two interfaces of the remote radio unit to carry out main and standby competition, and distinguishing a main interface from a standby interface; after distinguishing the main interface from the standby interface, the method further comprises: establishing a primary cell for the primary interface and establishing a standby cell for the standby interface; when the standby cell works normally, establishing a downlink common control channel which is irrelevant to a user for the standby cell, and generating corresponding downlink data;

according to the connection relation between the radio remote unit and the baseband board and a preset service backup method, carrying out service backup processing on the radio remote unit in the normal operation process and/or when a service fault occurs on the main interface; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board;

wherein, the performing service backup processing on the remote radio unit in a normal operation process and/or when a service failure occurs in the main interface according to a connection relationship between the remote radio unit and a baseband board and a preset service backup method includes: when the main interface has a service fault, switching the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface;

2. The method according to claim 1, wherein the performing service backup processing on the remote radio unit during normal operation and/or when a service failure occurs in the main interface according to a connection relationship between the remote radio unit and a baseband board and a preset service backup method includes:

3. The method according to claim 1, wherein the performing service backup processing on the remote radio unit during normal operation and/or when a service failure occurs in the main interface according to a connection relationship between the remote radio unit and a baseband board and a preset service backup method includes:

4. The method according to claim 1, wherein before controlling the two interfaces of the remote radio unit to perform active/standby contention and distinguishing the active interface from the standby interface, the method further comprises:

5. The method according to claim 1, wherein the main interface and the backup interface both carry uplink data and downlink data between the remote radio unit and an antenna, and the remote radio unit only processes data received or transmitted by the main interface.

6. A service processing device is characterized in that the service processing device is applied to a radio remote unit, and the radio remote unit is simultaneously accessed to the same baseband board of the same baseband processing unit or different baseband boards of different baseband processing units through two interfaces; the device includes:

a cell establishing unit, configured to establish a primary cell for the primary interface and a secondary cell for the secondary interface; when the standby cell works normally, establishing a downlink common control channel which is irrelevant to a user for the standby cell, and generating corresponding downlink data;

the backup processing unit is used for controlling the baseband processing unit connected with the radio remote unit to perform service backup processing on the radio remote unit in the normal operation process and/or when the main interface has a service fault according to the connection relation between the radio remote unit and the baseband board and a preset service backup method; the preset service backup method comprises a service backup method set according to the connection relation between the radio remote unit and the baseband board

The backup processing unit controls the baseband processing unit connected to the radio remote unit to generate a service failure at the main interface according to a connection relationship between the radio remote unit and a baseband board and a preset service backup method, and is specifically configured to: controlling a baseband processing unit connected with the remote radio unit to perform switching processing on the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface; if the baseband board connected with the reset main interface is the same as the baseband board connected with the main interface, controlling the baseband board connected with the main interface to delete the user context; if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, the baseband processing unit connected with the main interface is controlled to delete the user context associated with the main cell and the main cell, the standby cell of the reset main interface is controlled to bear the user service, and when the service failure of the reset standby interface is recovered, the standby cell is established for the reset standby interface.

7. The apparatus according to claim 6, wherein the backup processing unit controls, according to a connection relationship between the remote radio unit and a baseband board and a preset service backup method, the baseband processing unit connected to the remote radio unit to perform service backup processing when a service failure occurs at the main interface and the remote radio unit is subjected to service backup processing, specifically configured to:

8. The apparatus according to claim 6, wherein the backup processing unit controls, according to a connection relationship between the remote radio unit and a baseband board and a preset service backup method, the baseband processing unit connected to the remote radio unit to perform service backup processing on the remote radio unit in a normal operation process and/or when a service failure occurs at the main interface, and is specifically configured to: if the baseband board connected with the main interface is different from the baseband board connected with the standby interface, controlling a baseband processing unit connected with the main interface to backup the user context associated with the main cell to the baseband processing unit connected with the standby interface in real time, and associating the backed-up user context with the standby cell; when the main interface has a service fault, switching the parameter configurations of the main interface and the standby interface and the parameter configurations of the main interface and the standby interface respectively to obtain a reset main interface and a reset standby interface; if the baseband board connected with the reset main interface is different from the baseband board connected with the main interface, the baseband processing unit connected with the main interface is controlled to delete the user context associated with the main cell and the main cell, the standby cell of the reset main interface is controlled to bear the user service, and when the service failure of the reset standby interface is recovered, the standby cell is established for the reset standby interface.

9. The apparatus of claim 6, further comprising:

10. The apparatus according to claim 6, wherein the main interface and the backup interface distinguished by the start-up processing unit controlling baseband board both carry uplink data and downlink data between the remote radio unit and an antenna, and the remote radio unit only processes data received or transmitted by the main interface.