CN114007266A

CN114007266A - Link establishment method, device, base station and storage medium

Info

Publication number: CN114007266A
Application number: CN202010739088.4A
Authority: CN
Inventors: 乔熠晖
Original assignee: Sanechips Technology Co Ltd
Current assignee: Sanechips Technology Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2022-02-01

Abstract

The embodiment of the application discloses a link establishing method, a link establishing device, a base station and a storage medium. The method comprises the following steps: under the condition of power-on or chain-off, the remote radio unit performs handshake confirmation with the baseband unit according to the supported first communication rate and the supported second communication rate of the baseband unit; if the first communication rate is matched with the second communication rate after the confirmation, the configuration is carried out according to the matching result; and establishing a communication link with the baseband unit after configuration. In the embodiment, the handshake between the radio remote unit and the baseband unit is used to confirm whether the first communication rate supported by the radio remote unit is matched with the second communication rate supported by the baseband unit, so that blind test is not required, the matching time of the first communication rate and the second communication rate is shortened, and the establishing efficiency of the communication link between the first communication rate and the second communication rate is improved.

Description

Link establishment method, device, base station and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a link establishing method, an apparatus, a base station, and a storage medium.

Background

Communication between a Base Band Unit (BBU) and a Remote Radio Unit (RRU) depends on a communication link between the BBU and the RRU, and whether the communication link is established successfully is related to whether the BBU and the RRU have a common rate and mode. However, as mobile communication is continuously developed, the rate and mode between the BBU and the RRU are continuously increased.

In order to make both parties have a common rate and mode, the conventional method is to fix the mode and rate of the BBU, and then the RRU adapts to the mode and rate of the BBU in a blind test manner, which is inefficient.

Content of application

The embodiment of the application provides a link establishment method, a device, a base station and a storage medium, and improves the establishment efficiency of a link between a BBU and a RRU.

In a first aspect, an embodiment of the present application provides a link establishment method, which is applied to a radio remote unit, and the method includes:

under the condition of power-on or chain-off, confirming handshake with the baseband unit according to the supported first communication rate and the supported second communication rate of the baseband unit;

if the first communication rate is matched with the second communication rate after the confirmation, the configuration is carried out according to the matching result;

and establishing a communication link with the baseband unit after configuration.

In a second aspect, an embodiment of the present application provides a link establishment method, which is applied to a baseband unit, and the method includes:

confirming handshake with a radio remote unit according to a supported second communication rate and a supported first communication rate of the radio remote unit under the condition of power-on or chain disconnection;

if the second communication rate is matched with the first communication rate after the confirmation, the configuration is carried out according to the matching result;

and after configuration, establishing a communication link with the remote radio unit.

In a third aspect, an embodiment of the present application provides a link establishing apparatus, where the link establishing apparatus is disposed in a radio remote unit, and the apparatus includes:

the negotiation module is used for confirming handshake with the baseband unit according to the supported first communication rate and the supported second communication rate of the baseband unit under the condition of power-on or chain-off;

a configuration module, configured to configure according to a matching result if the first communication rate is matched with the second communication rate after the confirmation;

and the link establishing module is used for establishing a communication link with the baseband unit after configuration.

In a fourth aspect, an embodiment of the present application provides a link establishing apparatus, which is disposed in a baseband unit, and includes:

the negotiation module is used for confirming handshake with the radio remote unit according to the supported second communication rate and the supported first communication rate of the radio remote unit under the condition of power-on or chain-off;

the configuration module is used for carrying out configuration according to a matching result if the second communication rate is matched with the first communication rate after confirmation;

and the link establishing module is used for establishing a communication link with the remote radio unit after configuration.

In a fifth aspect, an embodiment of the present application provides a base station, including: the radio remote unit and the baseband unit;

the radio remote unit is used for performing handshake confirmation with the baseband unit according to the supported first communication rate and the supported second communication rate after power-on or chain-off; if the first communication rate is matched with the second communication rate after the confirmation, establishing a communication link with the baseband unit;

the baseband unit is configured to perform handshake confirmation with the radio remote unit according to the supported second communication rate and the supported first communication rate after power-on or link-off; and if the second communication rate is matched with the first communication rate after the confirmation, establishing a communication link with the radio remote unit.

In a sixth aspect, an embodiment of the present application provides a storage medium, on which a computer program is stored, where the computer program, when executed by a corresponding unit, implements the link establishment method according to the first aspect or the link establishment method according to the second aspect.

The embodiment of the application provides a link establishing method, a link establishing device, a base station and a storage medium, wherein under the condition of power-on or chain-off, a Radio Remote Unit (RRU) performs handshake confirmation with a baseband unit according to a first communication rate supported by the RRU and a second communication rate supported by the baseband unit; if the first communication rate is matched with the second communication rate after the confirmation, the configuration is carried out according to the matching result; and establishing a communication link with the baseband unit after configuration. According to the scheme, the handshake of the radio remote unit and the baseband unit is used for confirming whether the first communication rate supported by the radio remote unit is matched with the second communication rate supported by the baseband unit, blind test is not needed, the matching time of the first communication rate and the second communication rate is shortened, and the establishing efficiency of a communication link between the first communication rate and the second communication rate is improved.

Drawings

Fig. 1 is a flowchart of a link establishment method according to an embodiment of the present application;

fig. 2 is a flowchart of another link establishment method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a format of second communication information according to an embodiment of the present application;

FIG. 4 is a partial timing diagram of a DME encoding method provided by an embodiment of the present application;

fig. 5 is a flowchart of a link establishment method according to an embodiment of the present application;

fig. 6 is a structural diagram of a link establishment apparatus according to an embodiment of the present application;

fig. 7 is a structural diagram of a link establishment apparatus according to an embodiment of the present application;

fig. 8 is a structural diagram of a remote radio unit according to an embodiment of the present application;

fig. 9 is a structural diagram of a baseband unit according to an embodiment of the present application;

fig. 10 is a block diagram of a base station according to an embodiment of the present disclosure;

fig. 11 is an interaction diagram of an RRU and a BBU in a base station according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 1 is a flowchart of a link establishment method provided in an embodiment of the present application, which is applicable to a situation where a communication link between an RRU and a BBU is established, so as to improve the efficiency of establishing the link. In addition to establishing a communication link between the RRU and the BBU, a communication link between an AAU (Active Antenna Unit) and the BBU may also be established, which is similar to the RRU. This embodiment takes establishing a communication link between the RRU and the BBU as an example. The method may be performed by a link establishment apparatus, which may be implemented in software and/or hardware, and may be integrated in the RRU. Referring to fig. 1, the method may include the steps of:

and S110, under the condition of power-on or chain disconnection, performing handshake confirmation with the baseband unit according to the supported first communication rate and the supported second communication rate of the baseband unit.

In this embodiment, the number of the RRUs may be one or multiple, the number of the BBUs may be one, and multiple interfaces are provided on the BBUs, so that in actual application, communication links between different interfaces and the RRUs may be respectively established according to communication requirements. The establishment process of the communication link between each interface and the RRU is similar, and this implementation takes the example of establishing the communication link between the BBU and one RRU. The first communication rate is a communication rate of a communication link supported by the RRU, and optionally, may include a communication mode and a rate value, where the communication mode may include a CPRI (Common Radio Interface) mode and/or an ECPRI mode, and each communication mode may include a plurality of rate values, for example, the CPRI mode may include constant rate values of 2.4576G, 3.072G, 4.9152G, 6.144G, and 9.8304G, and the ECPRI mode may include constant rate values of 25G-RSFEC and 25G-NOFEC. The first communication rate can be selected from one or more of the above two modes and corresponding rate values, but the modes and rate values can be selected more in practical application. The second communication rate is one of communication rates of communication links supported by the BBU, whereby the RRU may get a determined result when handshake acknowledgement is based on the first communication rate and the BBU. Wherein the second communication rate may include a communication mode and a rate value.

When the RRU is powered on or detects a disconnection of a communication link with the BBU, a communication link may be established with a corresponding interface of the BBU based on a first communication rate currently supported. In order to ensure that the link establishment is successful, when the RRU is powered on or a communication link between the RRU and the BBU is detected to be disconnected, the RRU and the BBU may be checked first. In one case, the RRU and the BBU may send a check message to each other, for example, the RRU sends a check message to the BBU, and if an ACK message fed back by the BBU is received within a set time, it indicates that the BBU can normally receive a message sent by the RRU, that is, the BBU is normal; if the RRU receives the message sent by the BBU within the set time, the RRU can normally receive the message sent by the BBU, namely the RRU is normal. In this embodiment, messages for verification sent by the RRU and the BBU may be encoded in a Differential Manchester Encoding (DME) manner.

Optionally, after receiving the second communication rate sent by the BBU, the RRU matches the first communication rate supported by itself, and determines whether the first communication rate matches the second communication rate based on the matching result and the BBU handshake confirmation. To improve the accuracy of the result, the BBU may send the second communication rate to the RRU at a fixed timing, and determine whether the first communication rate matches the second communication rate through multiple handshakes. It should be noted that, in addition to matching the communication rate, the present embodiment may also match other information related to the establishment of a link and having various choices.

And S120, if the first communication rate is matched with the second communication rate after the confirmation, configuring according to a matching result.

Specifically, if it is determined that the first communication rate is matched with the second communication rate, it indicates that the RRU and the BBU have a common communication mode and rate value, and therefore, a corresponding Physical Coding Sublayer (PCS) and a SERDES rate may be configured according to the common communication mode and rate value, where the rate value corresponding to the SERDES rate is a common rate value between the RRU and the BBU. In this embodiment, a determined communication rate is obtained after the RRU and the BBU handshake confirmation, and then a corresponding PCS layer and SERDES rate are configured based on the communication rate, which improves the matching efficiency between the first communication rate and the second communication rate compared with the conventional method in which the PCS layer and SERDES rate are determined first and then the RRU adapts to the communication rate of the BBU in a blind trial manner.

And S130, establishing a communication link with the baseband unit after configuration.

After the PCS layer and the SERDES rate are configured, the RRU can establish a communication link with the BBU and then communicate with the BBU based on the established communication link. After the link is successfully established, if the link is broken due to any factor, the above process needs to be executed again.

The embodiment of the application provides a link establishing method, wherein under the condition of power-on or chain-off, a Radio Remote Unit (RRU) performs handshake confirmation with a baseband unit according to a first communication rate supported by the RRU and a second communication rate supported by the baseband unit; if the first communication rate is matched with the second communication rate after the confirmation, the configuration is carried out according to the matching result; and establishing a communication link with the baseband unit after configuration. The method confirms whether the first communication rate supported by the radio remote unit is matched with the second communication rate supported by the baseband unit or not through handshaking between the radio remote unit and the baseband unit, blind test is not needed, matching time of the first communication rate and the second communication rate is shortened, and establishing efficiency of a communication link between the first communication rate and the second communication rate is improved.

Fig. 2 is a flowchart of another link establishment method provided in an embodiment of the present application, where the present embodiment is applied to an RRU, and is optimized on the basis of the foregoing embodiment, and with reference to the diagram, the method may include the following steps:

s210, under the condition of power-on or chain-off, the remote radio unit and the baseband unit are verified.

The verification process may refer to the above embodiments, and details are not repeated here.

S220, the second communication information sent by the baseband unit is analyzed to obtain a second communication rate.

The second communication information is information that the BBU is sent to the RRU and is used for negotiating with the RRU, and may include, for example, a second communication rate supported by the BBU, response information that the RRU sends to the BBU, ACK used for confirming that the RRU information is received, and information sent to the BBU. Exemplarily, referring to fig. 3, fig. 3 is a schematic diagram of a format of second communication information provided in an embodiment of the present application. The length of the second communication information shown in fig. 3 is 16 bits, where D0-D15 represents 16 bits, each bit represents different information, e.g., E0-E3 represents information that RRU replies to BB, ACK represents an authentication message for confirming that RRU transmits, T0-T3 represents information that BBU transmits to RRU, which may be given by a random polynomial, a0-A6 represents a second communication rate, fig. 3 exemplarily shows two modes, namely CPRI mode and ECPRI mode, a0-a4 is a rate corresponding to CPRI mode, which corresponds to 2G, 3G, 4G, 6G and 9G, a5-A6 is a rate corresponding to ECPRI mode, which corresponds to 25G-RSFEC and 25G-NOFEC, for example, when the second communication rate is 3G in CPRI mode, a0-a 010 6 may represent 0000 and similar. When the second communication rate is 9G in the CPRI mode, a0-a6 may be denoted as 0000100.

In order to ensure that the link establishment is successful, the RRU of this embodiment receives the second communication information sent by the BBU in a fixed timing sequence, and thus performs multiple handshake confirmation with the BBU. In order to distinguish the second communication information sent in different time sequences, the present embodiment encodes the second communication information by using a DME encoding method, where the encoding method is characterized in that 0 or 1 is represented by flipping or hopping, for example, when there is flipping or hopping in the middle of each bit, it represents that the bit is 1, otherwise, it is 0. Exemplarily, referring to fig. 4, fig. 4 is a partial timing diagram of a DME encoding method provided in an embodiment of the present application. Each 16-bit unit is called a page, each page has a preamble for synchronization, the preamble is composed of two 16.276ns flip levels, the initial low level or high level of the flip level depends on the level at the end of the previous sequence, for example, if the level at the end of the previous sequence is low level, the initial high level of the preamble at the start of the next sequence is high level, and if the level at the end of the previous sequence is high level, the initial low level of the preamble at the start of the next sequence is low level, and the RRU can determine the start and the end of the second communication information by timing sequence. Fig. 4 exemplarily shows that the preamble is initially low, and represents that the corresponding level at the end of the last sequence is high. The 16bit information is located behind the preamble, the time length of the whole page is 16.276 × 2+16 × 8.138 — 162.76ns, and the duration of each bit is 8.138 ns. As shown in fig. 4, after the preamble is ended, there is a flip in the middle of the first bit, which indicates that the first bit is 1, there is a flip in the middle of the second bit, which indicates that the second bit is 1, there is no flip in the middle of the third bit, which indicates that the third bit is 0, and so on, the bit value corresponding to the second communication rate can be obtained. Specifically, the RRU decodes the second communication information to obtain the second communication rate.

And S230, comparing the first communication rate with the second communication rate, and performing handshake confirmation with the baseband unit according to the comparison result.

The first communication rate may also be represented in the form of 0 and 1, for example, the first communication rate is 1000000, 0100000, and 0010000, which represents that the RRU supports 2G, 3G, and 4G in CPRI mode, and assuming that the second communication rate is 0000100, the first communication rate is respectively matched with the second communication rate, if the same bits are all 1, the first communication rate and the second communication rate are matched, that is, the RRU and the BBU have a common rate, otherwise, the first communication rate and the second communication rate are not matched, that is, the RRU and the BBU do not have a common rate. The comparison result may represent 0 or 1, 0 represents no match, 1 represents match, and when the comparison result is 1, a matching rate value may be included. Specifically, the RRU sends the comparison result to the BBU, and confirms with the BBU handshake.

And S240, judging whether the first communication rate is matched with the second communication rate, if so, executing S250, otherwise, returning to execute S220.

If the first communication rate and the second communication rate are determined to be matched, the matched communication mode and rate value are obtained, the BBU handshake is confirmed based on the communication mode and rate value, if the first communication rate and the second communication rate are determined not to be matched, the result is fed back to the BBU, the BBU is enabled to adjust the first communication rate, and then the process is repeatedly executed.

And S250, acquiring a communication mode and a speed value corresponding to the matching result.

If the first communication rate is matched with the second communication rate, the RRU generates an interruption, and the communication mode and the rate value corresponding to the matching result can be read after the interruption is detected.

And S260, configuring a physical coding sublayer and an SERDES rate of the remote radio unit according to the communication mode and the rate value.

The PCS layer comprises parameters related to a communication mode and a rate value, and a communication link with the BBU can be established after the PCS layer and the SERDES rate are configured. The specific configuration process is not limited in this embodiment.

And S270, establishing a communication link with the baseband unit after configuration.

The embodiment of the application provides a link establishment method, and the RRU confirms whether a public rate exists between the RRU and the BBU through multiple handshaking, so blind test is not needed, and the rate matching efficiency between the RRU and the BBU is improved.

Fig. 5 is a flowchart of a link establishment method provided in this embodiment of the present application, which is applicable to a case where a communication link between a BBU and an RRU or an AAU is established, so as to improve the establishment efficiency of the link. The RRU and AAU have similar link establishment procedures, and this embodiment takes establishing a communication link between the RRU and the BBU as an example. The method can be performed by a link establishment apparatus, which can be implemented in software and/or hardware, and can be integrated in a BBU. Referring to fig. 5, the method may include the steps of:

and S310, under the condition of power-on or chain disconnection, confirming handshake with the radio remote unit according to the supported second communication rate and the supported first communication rate of the radio remote unit.

And S320, if the second communication rate is matched with the first communication rate after the confirmation, configuring according to a matching result.

And S330, establishing a communication link with the remote radio unit after configuration.

The link establishment process at the BBU end is similar to the link establishment process at the RRU end, and it should be noted that there may be a plurality of communication rates supportable by the BBU, but the second communication rate actually sent to the RRU is one of them, and when it is determined that the second communication rate does not match the first communication rate, the second communication rate may be adjusted, that is, one of the supportable communication rates is reselected as the second communication rate.

The embodiment of the application provides a link establishment method, which selects one of communication rates supported by a BBU as a second communication rate, can send the second communication rate to an RRU, can also receive a first communication rate sent by the RRU, and determines a common rate of the second communication rate and the first communication rate through handshaking negotiation with the RRU, so that the link establishment efficiency is improved.

Similar to the RRU, the BBU also needs to check whether the local terminal and the opposite terminal can normally receive information before confirming with the RRU according to the supported second communication rate and the first communication rate supported by the RRU, and the checking process is similar to the RRU.

On the basis of the above embodiment, the handshake confirmation with the RRU may be performed as follows:

analyzing first communication information sent by the remote radio unit to obtain the first communication rate, wherein the first communication information is encoded in a differential Manchester encoding mode;

and comparing the second communication rate with the first communication rate, and confirming handshake with the remote radio unit according to a comparison result.

The length of the first communication information is the same as that of the second communication information and the information format, and the first communication information and the second communication information are all coded by adopting a DME coding mode. The parsing process and the comparison process are similar to RRU.

On the basis of the above embodiment, if it is determined that the second communication rate matches the first communication rate, a communication mode and a rate value corresponding to the matching result may be obtained, and the PCS layer and SERDES rate of the BBU are configured according to the communication mode and the rate value.

The link establishment method provided in the embodiment of the present application is similar to the link establishment method applied to the RRU end, and if relevant details are not described in this embodiment, reference may be made to the above embodiments.

Fig. 6 is a structural diagram of a link establishment apparatus provided in an embodiment of the present application, where the apparatus may execute a link establishment method applied to an RRU end in the foregoing embodiment, and referring to fig. 6, the apparatus may include:

a negotiation module 41, configured to perform handshake confirmation with the baseband unit according to a first communication rate supported by the baseband unit and a second communication rate supported by the baseband unit under a power-on or link-off condition;

a configuration module 42, configured to configure according to a matching result if the first communication rate is matched with the second communication rate after the confirmation;

and a link establishing module 43, configured to establish a communication link with the baseband unit.

The embodiment of the application provides a link establishing device, wherein under the condition of power-on or chain-off, the device performs handshake confirmation with a baseband unit according to a first communication rate supported by the device and a second communication rate supported by the baseband unit; if the first communication rate is matched with the second communication rate after the confirmation, the configuration is carried out according to the matching result; and establishing a communication link with the baseband unit after configuration. The device confirms whether the first communication rate supported by the baseband unit is matched with the second communication rate supported by the baseband unit through handshaking with the baseband unit, blind test is not needed, the matching time of the first communication rate and the second communication rate is shortened, and the establishing efficiency of a communication link between the first communication rate and the second communication rate is improved.

On the basis of the above-described embodiment, the first communication rate and the second communication rate include a communication mode and a rate value.

On the basis of the foregoing embodiment, the negotiation module 41 is specifically configured to:

analyzing second communication information sent by the baseband unit to obtain the second communication rate, wherein the second communication information is coded by adopting a differential Manchester coding mode;

and comparing the first communication rate with the second communication rate, and performing handshake confirmation with the baseband unit according to the comparison result.

On the basis of the foregoing embodiment, the configuration module 42 is specifically configured to:

acquiring a communication mode and a speed value corresponding to the matching result;

and configuring a physical coding sublayer and an SERDES rate of the remote radio unit according to the communication mode and the rate value.

On the basis of the above embodiment, the apparatus further includes:

and the checking module is used for checking the radio remote unit and the baseband unit before handshaking confirmation with the baseband unit according to the first communication rate supported and the second communication rate supported by the baseband unit.

The link establishment device provided by the embodiment of the application can execute the link establishment method in the embodiment, and has the corresponding functional modules and beneficial effects of the execution method.

Fig. 7 is a structural diagram of a link establishment apparatus provided in an embodiment of the present application, where the apparatus may perform the link establishment method applied to the BBU end in the foregoing embodiment, and referring to fig. 7, the apparatus may include:

a negotiation module 51, configured to perform handshake confirmation with the baseband unit according to a first communication rate supported by the baseband unit and a second communication rate supported by the baseband unit under a power-on or link-off condition;

a configuration module 52, configured to configure according to a matching result if the first communication rate is matched with the second communication rate after the confirmation;

and a link establishing module 53, configured to establish a communication link with the baseband unit.

The embodiment of the application provides a link establishing device, one of communication rates which can be supported by the device is selected as a second communication rate, the second communication rate can be sent to an RRU, the first communication rate sent by the RRU can also be received, the common rate of the RRU and the RRU is determined through handshaking negotiation, and the link establishing efficiency is improved.

On the basis of the foregoing embodiment, the negotiation module 51 is specifically configured to:

On the basis of the foregoing embodiment, the configuration module 52 is specifically configured to:

and configuring a physical coding sublayer and a SERDES rate of the baseband unit according to the communication mode and the rate value.

Fig. 8 is a structural diagram of a remote radio unit according to an embodiment of the present application. Referring to fig. 8, the remote radio unit may include a processing subunit 61, a storage subunit 62, an input subunit 63, and an output subunit 64, where the number of the processing subunits 61 in the remote radio unit may be one or more, and one processing subunit 61 is taken as an example in fig. 8. The processing subunit 61 and the storage subunit 62, the input subunit 63, and the output subunit 64 may be connected by a bus or other means, and the bus connection is exemplified in fig. 8.

The storage subunit 62 serves as a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the link establishment method in the embodiment of the present application. The processing sub-unit 61 executes various functional applications and data processing of the remote radio unit by running software programs, instructions and modules stored in the storage sub-unit 62, that is, implements the link establishment method of the above-described embodiment.

The storage subunit 62 mainly includes a storage program area and a storage data area, wherein the storage program area can store an operating system and an application program required by at least one function; the storage data area may store data created according to use of the remote radio unit, and the like. In addition, the storage subunit 62 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage subunit 62 may further include a memory remotely located from the processing subunit 61, which may be connected to the remote radio unit via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input sub-unit 63 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the remote radio unit. The output subunit 64 may include a display device such as a display screen, and an audio device such as a speaker and a buzzer.

The remote radio unit provided by the embodiment of the present application and the link establishment method provided by the above embodiment belong to the same concept, and technical details that are not described in detail in the embodiment may be referred to the above embodiment, and the embodiment has the same beneficial effects as the link establishment method.

Fig. 9 is a block diagram of a baseband unit according to an embodiment of the present application. Referring to fig. 9, the baseband unit may include a processing subunit 71, a storage subunit 72, an input subunit 73, and an output subunit 74, where the number of the processing subunits 71 in the baseband unit may be one or more, and one processing subunit 71 is taken as an example in fig. 9. The processing subunit 71 and the storage subunit 72, the input subunit 73, and the output subunit 74 may be connected by a bus or other means, and the bus connection is exemplified in fig. 9.

The storage subunit 72 is a computer-readable storage medium, and can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the link establishment method in the embodiment of the present application. The processing subunit 71 executes various functional applications and data processing of the baseband unit by running software programs, instructions and modules stored in the storage subunit 72, that is, implements the link establishment method of the above-described embodiment.

The storage subunit 72 mainly includes a storage program area and a storage data area, wherein the storage program area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the baseband unit, and the like. In addition, the storage subunit 72 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage subunit 72 may further include memory located remotely from the processing subunit 71, which may be connected to the baseband unit via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input sub-unit 73 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the baseband unit. The output subunit 74 may include a display device such as a display screen, and an audio device such as a speaker and a buzzer.

The baseband unit provided by the embodiment of the present application and the link establishment method provided by the foregoing embodiment belong to the same concept, and the technical details that are not described in detail in the present embodiment can be referred to the foregoing embodiment, and the present embodiment has the same beneficial effects as the link establishment method.

Fig. 10 is a structural diagram of a base station according to an embodiment of the present application. Referring to fig. 10, the base station includes RRU81 and BBU82, where the number of BBUs 82 in the base station is 1, and BBU82 is provided with a plurality of interfaces, which can respectively establish communication links with RRU81 to perform communication. The number of the RRUs 81 can be one or more, and this embodiment takes one RRU81 as an example.

The RRU81 is used for performing handshake confirmation with the BBU82 according to the supported first communication rate and the second communication rate supported by the BBU82 after power-on or chain disconnection; if the first communication rate is matched with the second communication rate after confirmation, a communication link with the BBU82 is established;

the BBU82 is configured to perform handshake confirmation with the RRU81 according to the supported second communication rate and the first communication rate supported by the RRU81 after power-on or chain-off; if so, the second communication rate is matched to the first communication rate and a communication link is established with RRU 81.

In the embodiment, under the condition that the RRU and the BBU have multiple modes and rates, the RRU and the BBU negotiate by themselves to determine the common rate of the RRU and the BBU, and a communication link is established based on the common rate, so that communication is realized without blind test, and the link establishment efficiency is improved.

Fig. 11 exemplarily shows a case where both the RRU and the BBU are powered on but no link is established. Before the chain is established, the RRU and the BBU mutually send check messages to each other to check whether the local terminal can normally receive messages of the other side, and if the check messages sent by the other side can be received, a response result ACK which is confirmed to be received can be fed back to the other side to inform the other side of normally receiving the messages. After the verification is finished, if the RRU and the BBU receive the verification message and the ACK message sent by the other side, respectively, a link establishment operation may be performed. Specifically, the RRU sends the supported communication rate to the RRU, where the communication rate may be one or more, and the BBU sends one communication rate supported by the BBU to the RRU, and the two parties compare whether the communication rate sent by the other party matches the communication rate supported by the two parties, and send the matching result to the other party, perform multiple handshake confirmation, finally determine the common rate of the BBU and the RRU, and configure the PCS layer and SERDES rates corresponding to the common rates, thereby completing the chain establishment. Other details not shown may refer to the above embodiments.

Embodiments of the present application further provide a storage medium, on which a computer program is stored, and when the computer program is executed by a corresponding unit, the method for establishing a link according to the above embodiments of the present application is implemented.

Of course, the storage medium provided in the embodiments of the present application and containing computer-executable instructions is not limited to the operations in the link establishment method described above, and may also perform related operations in the link establishment method provided in any embodiments of the present application, and has corresponding functions and advantages.

From the above description of the embodiments, it is obvious for those skilled in the art that the present application can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions to enable a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the link establishment method described in the above embodiments of the present application.

Claims

1. A link establishment method applied to a radio remote unit, the method comprising:

2. The method of claim 1, wherein the first communication rate and the second communication rate comprise a communication mode and a rate value.

3. The method of claim 1, wherein the handshaking acknowledgement with the baseband unit according to the supported first communication rate and the supported second communication rate of the baseband unit comprises:

4. The method of claim 2, wherein the configuring according to the matching result comprises:

5. The method of any of claims 1-4, further comprising, prior to handshaking acknowledgement with the baseband unit based on the supported first communication rate and the supported second communication rate, further comprising:

and verifying the remote radio unit and the baseband unit.

6. A link establishment method applied to a baseband unit, the method comprising:

7. The method of claim 6, wherein the first communication rate and the second communication rate comprise a communication mode and a rate value.

8. The method of claim 6, wherein the handshake acknowledgement with the remote radio unit according to the supported second communication rate and the supported first communication rate of the remote radio unit comprises:

9. The method of claim 7, wherein the configuring according to the matching result comprises:

10. A link establishment apparatus, provided in a radio remote unit, the apparatus comprising:

11. A link establishment apparatus, provided in a baseband unit, the apparatus comprising:

12. A base station, comprising: the radio remote unit and the baseband unit;

13. A storage medium having stored thereon a computer program, characterized in that the program, when executed by a corresponding unit, implements a link establishment method according to any one of claims 1-5 or a link establishment method according to any one of claims 6-9.