WO2014000489A1

WO2014000489A1 - Method for establishing communication link between multi-mode rru and bbu, multi-mode rru and bbu

Info

Publication number: WO2014000489A1
Application number: PCT/CN2013/073587
Authority: WO
Inventors: 白丘
Original assignee: 华为技术有限公司
Priority date: 2012-06-29
Filing date: 2013-04-01
Publication date: 2014-01-03
Also published as: CN102740284A; CN102740284B

Abstract

The embodiments of the present invention relate to a method for establishing a communication link between a multi-mode RRU and a BBU, a multi-mode RRU and a BBU. The method for establishing a communication link between a multi-mode RRU and a BBU is characterized in that: the multi-mode RRU is configured with a multi-mode RE, the BBU comprises one or more RECs, and each REC supports a radio access technology. The method comprises: an RE obtaining, from one or more RECs, address information for establishing a communication link; and the RE sending a connection request to the one or more RECs according to the address information, so as to establish a communication link with the one or more RECs. In the embodiment of the present invention, since the multi-mode RE can establish a communication link with each REC by obtaining address information from each REC in the one or more RECs, the communication between multiple RECs of a single-mode BBU or RECs of different radio access technologies of a multi-mode BBU and the multi-mode RRU can be realized without formulating a complex application layer message specification between the multi-mode RRU and the BBU.

Description

Method for establishing a communication link between a multimode RRU and a BBU, multimode RRU and BBU

This application claims ¾) 1 ² filed June 29, Chinese Patent Application No. ^{^{^{¾) 1 2 10 222 6 2}}} 4.9, a method entitled "establishing a communication link between the BBU and the RRU multi-mode, multi- The priority of the Chinese Patent Application for MOD RRU and BBU", the entire contents of which is incorporated herein by reference. Technical field

The present invention relates to the field of wireless communications, and in particular, to a method and apparatus for establishing a communication link between multi-mode distributed base stations, that is, establishing a multi-mode radio remote unit (in English, it may be a Remote Radio Unit, and the abbreviation may be an RRU) A method of communicating links with a baseband unit (which may be a Baseband Unit in English, which may be a BBU), a multimode RRU and a BBU. Background technique

Currently, wireless distributed base stations are widely used. Wireless distributed base stations usually refer to BBUs and RRUs, and BBUs and RRUs are generally connected by optical fibers. The proposed link establishment scheme between the single mode BBU and the single mode RRU can support the interconnection between the heterogeneous single mode BBU and the single mode RRU.

However, with the continuous evolution of wireless network protocols, there are inevitably multiple types of wireless distributed base stations in a network, and multi-mode base stations, such as multi-mode BBUs or multi-mode RRUs, are gradually emerging. Since there is only one communication link between the BBU and the RRU, in the case of multi-mode BBU and multi-mode RRU interconnection, a standard unit is required to forward messages of other standards, thereby increasing the coupling between the systems. For example, in the case of multiple heterogeneous single-mode BBUs and multi-mode RRUs, it is necessary to define application layer message specifications between single-mode BBUs and multi-mode RRUs. Otherwise, interconnection between them cannot be achieved. In addition, in the case where multiple heterogeneous BBUs and multimode RRUs are interconnected, it is also necessary to define an application layer message specification between the multimode BBU and the multimode RRU. Otherwise, interconnection between each other cannot be achieved. However, the development of such application layer message specifications is difficult to promote due to the wide range of applications, so the application layer message specification has high implementation complexity and cost. Summary of the invention

The embodiment of the invention provides a method for establishing a communication link between a multi-mode RRU and a BBU, a multi-mode RRU and a BBU, and aims to solve the problem that it is difficult to establish a communication link between the multi-mode RRU and the BBU.

In one aspect, a method for establishing a communication link between a multimode RRU and a BBU is proposed, the multimode RRU A multi-mode wireless device (RE, Radio Equipment) is configured, the BBU includes one or more RECs, and each of the RECs supports a system, and the method includes: the RE from the one or more RECs Obtaining one or more address information for establishing a communication link; the RE sending a connection request to the one or more RECs according to the one or more address information, and establishing a communication link with the one or more RECs, Thereby the multimode RRU establishes a communication link with the BBU.

On the other hand, a method for establishing a communication link between a multimode RRU and a BBU is proposed. The multimode RRU is configured with a multimode RE, and the BBU includes one or more RECs, and each of the RECs supports A system, the method comprising: each of the RECs providing address information for establishing a communication link to the RE; each of the RECs receiving a connection request sent by the RE according to the address information, and the RE A communication link is established such that the multimode RRU establishes a communication link with the BBU.

On the other hand, a multi-mode RRU is proposed, the multi-mode RRU establishing a communication link with the BBU, the multi-mode RRU being configured with a multi-mode RE, the BBU including one or more RECs, each of the The REC supports a system, the multi-mode RE includes: an obtaining unit, configured to acquire one or more address information for establishing a communication link from the one or more RECs; a first establishing unit, configured to use, according to the address Information sends a connection request to the one or more RECs to establish a communication link with the one or more RECs such that the multimode RRU establishes a communication link with the BBU.

In another aspect, a BBU is proposed, the BBU establishing a communication link with a multimode RRU, the multimode RRU being configured with a multimode RE, the BBU including one or more RECs, each of the RECs supporting a system, each of the RECs includes: a providing unit, configured to provide address information for establishing a communication link to the RE, and a second establishing unit, configured to receive a connection request sent by the RE according to the address information, Establishing a communication link with the RE, such that the multimode RRU establishes a communication link with the BBU.

In the embodiment of the present invention, since the multi-mode RE can establish a communication link with each REC by obtaining address information from each REC of one or more RECs, it is not necessary to formulate a complicated application between the multi-mode RRU and the BBU. Layer message specification, which can realize REC of multi-mode BBU or multi-mode BBU with multi-mode RRU communication. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain according to these drawings without paying creative labor. Have other drawings.

1 is a flow chart of a method of establishing a communication link between a multimode RRU and a BBU, in accordance with an embodiment of the present invention. 2 is a flow chart of a method of establishing a communication link between a multimode RRU and a BBU, in accordance with an embodiment of the present invention. 3 is a schematic structural view of a multimode RE according to an embodiment of the present invention.

4 is a schematic structural diagram of an acquisition unit in a multimode RE according to an embodiment of the present invention.

Fig. 5 is a schematic view showing another structure of a multimode RE according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a REC according to an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a providing unit in an REC according to an embodiment of the present invention.

Figure 8 is a block diagram showing another structure of an REC according to an embodiment of the present invention.

FIG. 9 is a schematic diagram showing the structure of an apparatus for establishing a communication link between a multimode RRU and a BBU according to another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope shall fall within the scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access ( WCDMA (Wandaband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.

A user equipment (UE, User Equipment) may also be referred to as a mobile terminal (Mobile Terminal), a mobile user equipment, or the like, and may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). The user equipment can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer built-in or in-vehicle mobile device that is wireless with The access network exchanges languages and/or data.

The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (Node B) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. . Embodiments of the present invention relate to a method and apparatus for establishing a communication link between a wireless distributed base station BBU and an RRU. Here, the RRU refers to a multi-mode RRU; the BBU may be a multi-mode BBU, or may be a plurality of single-mode BBUs interconnected and connected to the multi-mode RRU through one of the single-mode BBUs, or may be multiple single-mode BBUs directly with the RRU Connected.

In general, the control module for each RRU in the BBU is called the REC of the standard. Multiple RECs can be configured in one multimode BBU, or can be configured in multiple single mode BBUs of different standards. That is, the BBU includes one or more RECs, each of which supports a standard. If the BBU includes a REC, the BBU is a single mode BBU; if the BBU includes multiple RECs, the BBU is a multimode BBU. A multimode RE is configured in the multimode RRU. A multimode RE and one or more RECs together form an Internet Protocol (IP) network.

In general, in order to establish a communication link between the multimode RRU and the BBU, the RE in the multimode RRU needs to know the address of the REC with which the communication link needs to be established in order to successfully establish a path with the REC.

A method of establishing a communication link between a multimode RRU and a BBU according to an embodiment of the present invention implemented by the BBU side will be described below with reference to FIG. As shown in Figure 1, the method for establishing a communication link between a multimode RRU and a BBU includes the following steps.

11. The multi-mode RE acquires address information for establishing a communication link from the REC.

12: The multi-mode RE sends a connection request to the REC according to the address information, and establishes a communication link with the REC, so that the multi-mode RRU establishes a communication link with the BBU.

In order to obtain the address information of the communication link with the REC, the multimode RE can adopt the following method.

Specifically, the multi-mode RE sends a broadcast message of the address request, where the broadcast message requested by the address carries the identification information of the multi-mode RE. Then, the multi-mode RE receives a broadcast message of an address response sent by each REC in response to the broadcast message of the address request, where the broadcast message of the address response carries the address of the REC and the REC is the The address of the RE assigned by the multimode RE. Here, both the address of the REC and the address of the RE may be in the form of an IP address.

It should be understood that since the multi-mode RE is a broadcast message for transmitting an address request to all RECs, after each REC receives the broadcast message of the above address request, the multi-mode RE can be assigned an address and its own address and The address assigned to the RE is fed back to the RE along with the broadcast message of the address response. Correspondingly, the multi-mode RE may receive corresponding REC addresses from different RECs and different addresses allocated by the respective RECs, and the multi-mode RE only needs to select one of the addresses of these different REs as its own address. , you can use the address of the RE Establish communication links with different RECs.

It should be understood that it is necessary to ensure that the multimode RE and REC are different IP addresses and are in one network segment. After the IP address is allocated, the IP address of the multimode RE needs to remain unchanged during subsequent operations to prevent IP address conflicts in abnormal situations. For example, in the case of REC reset, the IP address of the first RE is recovered, and the reclaimed IP address is assigned to the second RE, and the first RE continues to use the reclaimed IP address, so that an IP address conflict occurs. .

In this way, after the multimode RE obtains the address information of the communication link from the REC, the multimode RE may send a connection request to the REC according to the address of the REC and the address of the RE, and establish a communication chain with the corresponding REC. And the multi-mode RRU establishes a communication link with the BBU.

Since the multi-mode RE supports multiple formats, and each REC supports only one system, in the process of each REC communicating with the multi-mode RE, it can be sent in response to the broadcast message requested by the address. The broadcast message of the address response carries the first information indicating the format of the REC. Here, the broadcast message of the address response may be a User Datagram Protocol (UDP) broadcast message. Similarly, when the multi-mode RRU establishes a communication link with the BBU, the third layer information indicating the REC can be carried by the transmitted application layer message. The third information may refer to the form of the first information. Here, the first information and the third information, and the second information described below are all used by the REC to notify the RE of the established communication link, so that the RE and the REC establish the correct communication system.

An example of a broadcast message for an address response in the form of UDP is provided in Table 1 below. The first information used to indicate the mode is added, see bold.

Table 1 Format of the UDP broadcast message for the address response

Value Description Type Length

BBU side optical port number Unsigned char 1 byte

(unsigned string)

RRU ID RRU ID number Unsigned char 1 byte

BBU ID BBU ID number Unsigned char 1 byte

RRU side MAC address RRU MAC address Unsigned char 6 bytes

RRU side IP address Unsigned Char array 4 bytes

BBU side IP address Unsigned Char array 4 bytes Subnet mask Unsigned Char array 4 bytes MODE REC system information Unsigned char 1 byte

(standard) bitO: system 1

Bitl: standard 2

There is also a possibility. That is, when the communication link between the multi-mode RRU and the BBU fails and the BBU is restarted, or the BBU is initially started, each REC sends a REC address broadcast message to the multi-mode RE after the start, where the REC address broadcast message carries The address of the REC. After the multimode RE receives the REC address broadcast message, if it finds that the communication link between itself and the REC has been established, that is, the multimode RE has obtained the address of the REC, the multimode RE will ignore the REC. Address broadcast message. Otherwise, if the multi-mode RE does not obtain the address of the REC, the communication link with the REC may be established through the above process (ie, obtaining the address of the RE from the REC and the address of the REC), so that subsequent messages are on the communication link. transmission.

Similarly, the REC address broadcast message may also be a UDP broadcast message, and carries the second information indicating the format of the REC. The REC can periodically broadcast a REC address broadcast message.

An example of a REC address broadcast message in the form of UDP is provided in Table 1 below. The second information used to indicate the mode is added, see bold.

Table 1 Format of the UDP broadcast message for the address response

In addition, the multimode RE can also take the following simplified manner by acquiring the address information of the communication link from the REC and then establishing a communication link with the REC. For example, the multi-mode RE does not need to obtain the address of the RE from the REC, but establishes a communication link with the REC by using the address of the REC only on the basis of the address of the REC.

Specifically, the multi-mode RE acquires a REC address broadcast message sent by the REC, where the REC address broadcasts The message carries the address of the REC, and then the multi-mode RE establishes a communication link with the REC according to the address of the REC.

As can be seen from the above, in the embodiment of the present invention, since the multi-mode RE can establish a communication link with each REC by obtaining address information from each REC of one or more RECs, it is not necessary to establish a relationship between the multi-mode RRU and the BBU. The complex application layer message specification can realize REC and multi-mode RRU communication of different standards of multiple single-mode BBU RECs or multi-mode BBUs.

A method of establishing a communication link between a multimode RRU and a BBU according to an embodiment of the present invention implemented by the RRU side will be described below with reference to FIG. Since the RRU side and the BBU side method correspond, the duplicated content is omitted here. As shown in FIG. 2, the method for establishing a communication link between a multimode RRU and a BBU includes the following steps.

21, The REC provides the multi-mode RE with address information for establishing a communication link.

Then, the REC receives the connection request sent by the multimode RE according to the address information, and establishes a communication link with the RE, so that the multimode RRU establishes a communication link with the BBU.

Correspondingly, the REC receives the broadcast message of the address request sent by the multimode RE, and the broadcast message of the address request carries the identification information of the multimode RE. Then, the REC assigns the address of the RE to the RE based on the identification information of the multi-mode RE. Then, the REC sends a broadcast message of the address response to the multimode RE, where the broadcast message of the address response carries the address of the RE and the address of the REC. Finally, the REC receives the address of the RE according to the RE and the The connection request sent by the address of the REC establishes a communication link with the multi-mode RE, so that the multi-mode RRU establishes a communication link with the BBU.

Here, the broadcast message of the address response carries first information indicating a format of the REC. And, the broadcast message of the address response may be a UDP broadcast message.

Or, when the communication link between the REC and the multi-mode RE is established, the REC and the RE may transmit an application layer message by using the communication link, where the application layer message carries an indication of the REC. The third information of the system.

Optionally, before the REC receives the broadcast message of the address request sent by the RE, the REC may send a REC address broadcast message, where the REC address broadcast message carries the address of the REC. Here, the REC address broadcast message may be a UDP broadcast message carrying the second information indicating the format of the REC.

Alternatively, the REC provides a REC address broadcast message, and the REC address broadcast message carries the address of the REC. Then, the REC receives a connection request sent by the multi-mode RE according to the address of the REC, and establishes a communication link with the multi-mode RE. As can be seen from the above, in the embodiment of the present invention, since the multi-mode RE can establish a communication link with each REC by obtaining address information from each REC of one or more RECs, it is not necessary to establish a relationship between the multi-mode RRU and the BBU. The complex application layer message specification can realize REC and multi-mode RRU communication of different standards of multiple single-mode BBU RECs or multi-mode BBUs.

An apparatus for establishing a communication link between a multimode RRU and a BBU according to an embodiment of the present invention, wherein the multimode RRU is configured with a multimode RE 30, the BBU includes one or more, respectively, in conjunction with FIG. 3 to FIG. RECs, each of which supports a standard.

As shown in FIG. 3, the RE 30 includes: an obtaining unit 31 and a first establishing unit 32. The obtaining unit 31 is configured to acquire address information of establishing a communication link from the REC. The first establishing unit 32 is configured to establish a communication link with the REC according to the address information, so that the multimode RRU establishes a communication link with the BBU.

Optionally, the obtaining unit 31 is configured to obtain a REC address broadcast message sent by the REC, where the REC address broadcast message carries an address of the REC. The first establishing unit 32 is configured to establish a communication link with the REC according to the address of the REC.

In addition, optionally, as shown in FIG. 4, the obtaining unit 31 may further include a sending module 311 and a receiving module 312. The sending module 311 is configured to send a broadcast message of the address request, where the broadcast message of the address request carries the

The identifier information of the RE, the receiving module 312 is configured to receive a broadcast message of the address response sent by the REC in response to the broadcast message of the address request, where the broadcast message of the address response carries the address of the REC and the REC is the The address of the RE assigned by the RE. Thus, the first establishing unit 32 is configured to establish a communication link with the REC according to the address of the REC and the address of the RE.

Optionally, the receiving module 312 is further configured to receive, by the sending module, a REC address broadcast message sent by the REC, before the sending module sends the broadcast message of the address request, where the REC address broadcast message carries the address of the REC.

The broadcast message of the address response may be a UDP broadcast message, and the broadcast message of the REC address may be a UDP broadcast message, where the broadcast message of the address response carries the first information indicating the format of the REC, and the REC address broadcast message carries the indication of the REC. The second information of the standard.

In addition, the RE 30 may further include a first transmission unit 33 for transmitting an application layer message with the REC over the communication link, wherein the application layer message carries third information indicating a format of the REC. As shown in Figure 5.

As can be seen from the above, in the embodiment of the present invention, since the multi-mode RE can establish a communication link with each REC by obtaining address information from each REC of one or more RECs, it is not necessary to establish a relationship between the multi-mode RRU and the BBU. of Complex application layer message specification, which can realize REC of multi-mode BBU or multi-mode BBU with different modes of REC and multi-mode RRU communication.

The BBU establishes a communication link with the multimode RRU, the multimode RRU is configured with a multimode RE, the BBU includes one or more RECs, and each of the RECs supports a standard. Wherein, as shown in Fig. 6, each REC 60 includes a providing unit 61 and a second establishing unit 62. The providing unit 61 is configured to provide the RE with address information for establishing a communication link. The second establishing unit 62 is configured to receive a connection request sent by the RE according to the address information, establish a communication link with the RE, so that the multi-mode RRU establishes a communication link with the BBU.

Optionally, the providing unit 61 is configured to provide a REC address broadcast message, where the REC address broadcast message carries an address of the REC. The second establishing unit 62 is configured to receive a connection request sent by the RE according to the address of the REC, and establish a communication link with the RE.

In addition, optionally, as shown in FIG. 7, the providing unit 61 may further include a receiving module 611, an allocating module 612, and a sending module 613. The receiving module 611 is configured to receive a broadcast message of the address request sent by the RE, where the broadcast message of the address request carries the identifier information of the RE. The allocation module 612 is configured to address the RE assigned to the RE based on the identification information of the RE. The sending module 613 is configured to send a broadcast message of an address response to the RE, where the broadcast message of the address response carries an address of the RE and an address of the REC. Then, the second establishing unit 62 is configured to receive a connection request sent by the RE according to the address of the RE and the address of the REC, and establish a communication link with the RE.

In addition, the sending module 613 is further configured to send a REC address broadcast message, where the REC address broadcast message carries the address of the REC, before the REC receives the broadcast message of the address request sent by the RE.

In addition, the REC 60 may further include a second transmission unit 63 for transmitting an application layer message with the RE through the communication link, wherein the application layer message carries third information indicating a format of the REC. As shown in Figure 8.

As can be seen from the above, in the embodiment of the present invention, since the multi-mode RE can establish a communication link with each REC by obtaining address information from each REC of one or more RECs, it is not necessary to establish a relationship between the multi-mode RRU and the BBU. The complex application layer message specification can realize REC and multi-mode RRU communication of different standards of multiple single-mode BBU RECs or multi-mode BBUs. It can be understood that the foregoing apparatus (RE) 30 for establishing a communication link between the multimode RRU and the BBU is generally configured in the RRU, and the method for establishing a communication link between the multimode RRU and the BBU as shown in FIG. 1 is implemented; A device (REC) 60 for communication links between the multimode RRU and the BBU is typically configured in the BBU to implement a method of establishing a communication link between the multimode RRU and the BBU as shown in FIG.

In addition, in FIG. 9, an embodiment of the present invention further provides an apparatus (multi-mode RE or REC) 90 for establishing a communication link between a multi-mode RRU and a BBU, the apparatus comprising a memory 91 and a processor 92. The memory 91 is configured to store code for implementing the steps in the foregoing method embodiments, and the processor 92 is configured to process the code stored in the memory.

One of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. The skilled artisan can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working processes of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and are not mentioned here.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and the components displayed as the unit may or may not be physical units, i.e., may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention is essentially or The portion that contributes to the prior art or the portion of the technical solution may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be an individual) A computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read only memory (ROM), a random access memory (RAM, a random access memory), a magnetic disk, or an optical disk, and the like. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

A method for establishing a communication link between a multimode radio remote unit RRU and a baseband unit BBU, wherein the multimode RRU is configured with a multimode wireless device RE, and the BBU includes one or more The wireless device controller REC, each of the RECs supports a system, and the method includes:

The RE acquires one or more address information of the communication link from the one or more RECs; the RE sends a connection request to the one or more RECs according to the one or more address information, The one or more RECs establish a communication link.

2. The method of claim 1 wherein

The obtaining, by the RE, the one or more address information of the communication link from the one or more RECs: the RE sends a broadcast message of the address request, and the broadcast message of the address request carries the identifier information of the RE,

Receiving, by the RE, a broadcast message of an address response sent by each of the one or more RECs in response to a broadcast message of an address request, the broadcast message of the address response carrying an address of the REC and each of the REC is the address of the RE assigned to the RE;

And the RE sends a connection request to the one or more RECs according to the one or more address information, and establishing a communication link with the one or more RECs includes:

The RE sends a connection request to each of the one or more RECs according to an address of the REC and an address of the RE to establish a communication link with the one or more RECs.

The method according to claim 2, wherein the RE sends a connection request to each of the one or more RECs according to an address of the REC and an address of the RE, One or more RECs establish communication links, including:

If the RE receives a broadcast message of an address response sent by each of the plurality of RECs in response to a broadcast message of an address request, the broadcast message of the address response carries an address of the REC and the REC is Describe the address of the RE allocated by the RE, and the RE selects one of the addresses of the plurality of REs allocated by the plurality of RECs as the address of the RE, and selects the address according to the REC and the RE The RE address sends a connection request to each of the one or more RECs to establish a communication link with the one or more RECs.

4. The method of claim 1 wherein:

And obtaining, by the one or more RECs, one or more address information of establishing a communication link, the RE: acquiring, by the RE, one or more REC address broadcast messages sent by the one or more RECs,

The REC address broadcast message carries the address of the REC;

The establishing, by the RE, the communication link with the one or more RECs according to the address information includes: sending, by the RE, a connection request to each of the one or more RECs according to an address of the REC, The REC establishes a communication link.

The method according to claim 2, wherein the broadcast message of the address response is a UDP broadcast message, and carries first information indicating a format of the REC.

The method according to claim 3 or 4, wherein the REC address broadcast message is a UDP broadcast message carrying second information indicating a format of the REC.

The method according to any one of claims 1 to 6, further comprising:

The RE transmits an application layer message with each of the RECs through the established communication link, wherein the application layer message carries third information indicating a format of the REC.

A method for establishing a communication link between a multi-mode frequency remote unit RRU and a baseband unit BBU, wherein the multi-mode RRU is configured with a multi-mode wireless device RE, and the BBU includes one or more The wireless device controller REC, each of the RECs supports a system, and the method includes:

Each of the RECs provides address information for establishing a communication link to the RE;

Each of the RECs receives a connection request sent by the RE according to the address information, and establishes a communication link with the RE.

9. The method of claim 8 wherein:

Each of the RECs providing the RE with address information for establishing a communication link includes:

Each of the RECs receives a broadcast message of an address request sent by the RE, and the broadcast message of the address request carries the identifier information of the RE; Each of the RECs allocates an address of the RE to the RE according to the identification information of the RE;

Each of the RECs sends a broadcast message of an address response to the RE, and the broadcast message of the address response carries an address of the RE and an address of the REC;

Each of the RECs receives a connection request sent by the RE according to the address information, and establishing a communication link with the RE includes:

Each of the RECs receives a connection request sent by the RE according to an address of the RE and an address of the REC, and establishes a communication link with the RE.

The method according to claim 9, wherein before each of the RECs receives the broadcast message of the address request sent by the RE, the method further includes:

Each of the RECs transmits a REC address broadcast message, and the REC address broadcast message carries an address of the REC.

11. The method of claim 8 wherein:

Each of the RECs provides a REC address broadcast message, and the REC address broadcast message carries an address of the REC;

Each of the RECs receives a connection request sent by the RE according to the address of the REC, and establishes a communication link with the RE.

The method according to claim 9, wherein the broadcast message of the address response is a UDP broadcast message carrying first information indicating a format of the REC.

The method according to claim 10 or 11, wherein the REC address broadcast message is a UDP broadcast message carrying second information indicating a format of the REC.

The method according to any one of claims 8 to 13, further comprising: Each of the RECs and the RE transmits an application layer message through the established communication link, where the application layer message carries third information indicating a format of the REC.

A multi-mode frequency remote unit RRU, wherein the multi-mode RRU establishes a communication link with a baseband unit BBU, and the multi-mode RRU is configured with a multi-mode wireless device RE, and the BBU includes one or a plurality of wireless device controllers REC, each of the RECs supporting a system, the multi-mode RE comprising:

An acquiring unit, configured to acquire one or more address information of establishing a communication link from the one or more RECs; a first establishing unit, configured to send the one or more RECs according to the one or more address information Sending a connection request to establish a communication link with the one or more RECs.

16. The multimode RRU of claim 15 wherein:

The obtaining unit includes:

a sending module, configured to send a broadcast message of the address request, where the broadcast message of the address request carries the identifier information of the RE,

a receiving module, configured to receive a broadcast message of an address response sent by each of the one or more RECs in response to the broadcast message of the address request, where the broadcast message of the address response carries the address of the REC and each The REC is an address of an RE allocated by the RE;

The first establishing unit is configured to:

And transmitting a connection request to each of the one or more RECs according to an address of the REC and an address of the RE, establishing a communication link with the one or more RECs.

The multi-mode RRU according to claim 16, wherein the first establishing unit is further configured to: if the RE receives each of the plurality of RECs in response to a broadcast message of an address request a broadcast message of the address response, the broadcast message of the address response carrying the address of the REC and the address of the RE allocated by the REC to the RE, wherein the RE is allocated from the plurality of RECs One of the addresses of the REs is selected as the address of the RE, and a connection request is sent to each of the one or more RECs according to the address of the REC and the RE address selected by the RE, One or more RECs establish a communication link.

18. The multimode RRU of claim 15 wherein:

The obtaining unit is used to:

Obtaining one or more REC address broadcast messages sent by the one or more RECs, where the REC address broadcast message carries an address of the REC;

The first establishing unit is configured to:

And transmitting a connection request to each of the one or more RECs according to an address of the REC, establishing a communication link with the REC.

The multimode RRU according to claim 16, wherein the address response broadcast message is a UDP broadcast message carrying first information indicating a format of the REC.

The multimode RRU according to claim 17 or 18, wherein the REC address broadcast message is a UDP broadcast message carrying second information indicating a format of the REC.

The multimode RRU according to any one of claims 15 to 20, further comprising: a first transmission unit, configured to transmit an application layer with each of the RECs through the communication link established a message, wherein the application layer message carries third information indicating a format of the REC.

A baseband unit BBU, wherein the BBU establishes a communication link with a multimode radio remote unit RRU, the multimode RRU is configured with a multimode wireless device RE, and the BBU includes one or more The wireless device controller REC, each of the RECs supports a standard, and each of the RECs includes:

a providing unit, configured to provide the RE with address information for establishing a communication link;

And a second establishing unit, configured to receive a connection request sent by the RE according to the address information, establish a communication link with the RE, so that the multi-mode RRU establishes a communication link with the BBU.

23. The BBU of claim 22, wherein:

The providing unit includes:

a receiving module, configured to receive a broadcast message of an address request sent by the RE, where the broadcast message of the address request carries the identifier information of the RE, An allocation module, configured to send, according to the identifier information of the RE, an address of an RE that is allocated to the RE, a sending module, configured to send a broadcast message of an address response to the RE, where the broadcast message of the address response carries the RE Address and address of the REC;

The second establishing unit is configured to:

Receiving, by the RE, a connection request sent according to an address of the RE and an address of the REC,

The RE establishes a communication link.

The BBU according to claim 23, wherein the sending module is further configured to: before the REC receives the broadcast message of the address request sent by the RE, send a REC address broadcast message, the REC address The broadcast message carries the address of the REC.

25. The BBU of claim 22, wherein

The providing unit is used to:

Providing a REC address broadcast message, where the REC address broadcast message carries an address of the REC; the second establishing unit is configured to:

Receiving a connection request sent by the RE according to the address of the REC, establishing a communication link with the RE.

The BBU according to claim 23, wherein the broadcast message of the address response is a UDP broadcast message, and carries first information indicating a format of the REC.

The BBU according to claim 24 or 25, wherein the REC address broadcast message is a UDP broadcast message carrying second information indicating a format of the REC.

The BBU according to any one of claims 22 to 27, further comprising: a second transmission unit, configured to transmit an application layer message with the communication link established by the RE, where The application layer message carries third information indicating the format of the REC.