CN113891395A

CN113891395A - Resource mapping method, device, base station unit and system

Info

Publication number: CN113891395A
Application number: CN202010637387.7A
Authority: CN
Inventors: 廖林生; 鄢凯; 苏鑫; 李响; 段然
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2022-01-04

Abstract

The invention provides a resource mapping method, a resource mapping device, a base station unit and a resource mapping system. In one embodiment, the method is applied to an extension unit, the extension unit is connected to a host unit through a first interface, and is connected to a remote unit through a second interface, and the resource mapping method includes: acquiring an extended antenna carrier identifier (e-AxCID) configured by a host unit, and a first relation between the e-AxCID and the first interface and/or the second interface; performing resource mapping during data transmission between the host unit and the remote unit according to the plurality of e-AxCIDs and the first relation; wherein different e-AxCIDs correspond to different logic functions. And by utilizing the configured e-AxCID and the first relation, the resource mapping during the hybrid networking of the eCPRI protocol and the CPRI protocol can be realized.

Description

Resource mapping method, device, base station unit and system

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a resource mapping method, apparatus, base station unit, and system.

Background

In base station management, one basic aspect is the mapping and management of the physical resources and logical functions of the remote units. Physical resources refer to baseband processing resources, radio frequency processing resources, data exchange resources, data distribution and/or consolidation resources, etc. at the remote units. Logical functions include logical cells, logical carriers, logical receive and/or transmit channels, and the like.

For a remote unit connected based on pure enhanced common public radio interface CPRI (enhanced-CPRI, eCPRI) protocol Option7-2 partition, in the prior art of a base station, physical resources of the remote unit are partitioned according to a logic function in advance, and a corresponding extended antenna carrier identifier e-axid id is allocated to each physical resource. When transmitting data, a transmitting end packs the data according to an eCPRI protocol, and a packet header comprises an Extended antenna carrier identification (e-AxCID or eAxc-id/eAxc-id/e-AxCID)) field corresponding to a logic function; when the receiving end processes the data, the e-AxCID field in the packet header is analyzed, and the corresponding physical resource is determined.

For a remote unit divided and connected based on Common Public Radio Interface (CPRI) protocol Option8, in the prior art, all logic function information is configured to the remote unit, and when transmitting data, a transmitting end places the data to a specific position of a CPRI frame packet according to the logic function information; and after receiving data at the specific position of the CPRI frame grouping, the receiving terminal determines the corresponding physical resource according to the logic function information.

However, the above mapping manner of the physical resources and the logical functions of the remote units is not suitable for the base station system in which the eCPRI protocol Option7-2 partitions the mixed networking with the CPRI protocol Option8, and when the eCPRI protocol Option7-2 partitions the mixed networking with the CPRI protocol Option8, the remote units connected with the eCPRI and the remote units connected with the CPRI need to use different mapping and processing of the physical resources and the logical functions; moreover, because of the hybrid networking, additional mapping relationships need to be added between different protocol processing methods. In the prior art, a mapping mode capable of supporting mixed networking of eCPRI protocol Option7-2 division and CPRI protocol Option8 division does not exist.

Disclosure of Invention

The technical scheme of the invention aims to provide a resource mapping method, a resource mapping device, a base station unit and a resource mapping system, which are used for realizing a mapping mode of an eCPRI protocol and CPRI protocol hybrid networking.

The embodiment of the invention provides a resource mapping method, which is applied to an extension unit, wherein the extension unit is connected with a host unit through a first interface and connected with a remote unit through a second interface, and the resource mapping method comprises the following steps:

acquiring an extended antenna carrier identifier (e-AxCID) configured by a host unit, and a first relation between the e-AxCID and the first interface and/or the second interface;

performing resource mapping during data transmission between the host unit and the remote unit according to the plurality of e-AxCIDs and the first relation;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, in the resource mapping method, the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the extension unit, and different physical resources correspond to different logical functions.

Optionally, in the resource mapping method, the first relationship includes a corresponding relationship between the e-AxCID and the second interface and a relationship between the e-AxCID and a data carrying location of the second interface.

Optionally, in the resource mapping method, the e-AxCID satisfies the following rule:

for the same uplink user plane data stream, configuring the same e-AxCID at the lower receiving endpoint in the extension unit and the receiving endpoint in the remote unit connected to the extension unit;

for the same downlink user plane data stream, configuring the same e-AxCID at the lower layer sending endpoint in the extension unit and the sending endpoint in the remote unit connected to the extension unit;

for the same user plane data flow of the same shared cell, the transmitting endpoints in different remote units configure the same e-AxCID, and the receiving endpoints in different remote units configure the same e-AxCID.

Optionally, the resource mapping method, wherein performing resource mapping during data transmission between the host unit and the remote unit according to the e-AxCID and the first relationship, includes:

acquiring downlink transmission data sent by the host unit, wherein the downlink transmission data comprises the e-AxCID;

determining a target physical resource corresponding to the e-AxCID according to the e-AxCID in the downlink transmission data;

after the downlink transmission data are processed through the target physical resources, the processed downlink transmission data are packaged into downlink transmission data of a second interface protocol;

and outputting the downlink transmission data of the second interface protocol to a target data bearing position of a target second interface determined according to the first relation.

Optionally, the resource mapping method, wherein the resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship, includes:

acquiring uplink transmission data transmitted to a target second interface and a target data bearing position of the target second interface by the remote unit according to the e-AxCID and the first relation;

determining a target physical resource corresponding to the e-AxCID according to the e-AxCID;

after the target physical resource processes the uplink transmission data, packaging the processed uplink transmission data into uplink transmission data of a first interface protocol, and adding the e-AxCID corresponding to the target second interface and the target data bearing position in the uplink transmission data of the first interface protocol;

and outputting the uplink transmission data of the first interface protocol to a first interface corresponding to the e-AxCID.

Optionally, in the resource mapping method, the first interface and the second interface are both common public radio interfaces CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, the resource mapping method, wherein the configured first relationship includes:

a correspondence between the e-AxCID configured for the extension unit and a second interface;

a relationship of the e-AxCID configured for the first interface to a data carrying location of the first interface;

a relationship of the e-AxCID configured for the second interface to a data carrying location of the second interface.

acquiring downlink transmission data transmitted to a target data bearing position in a first target CPRI interface connected with the extension unit by the host unit;

and forwarding the downlink transmission data to a target data bearing position in a second target CPRI connected with the remote unit according to the first relation.

acquiring uplink transmission data transmitted to a second target CPRI connected with the remote end by the remote unit and a target data bearing position of the second target CPRI according to the first relation;

and determining a first target CPRI connected with the extension unit and a target data bearing position of the first target CPRI according to the first relation.

The embodiment of the present invention further provides a resource mapping method, which is applied to a remote unit, where the remote unit is connected to the extension unit through a second interface, and the extension unit is connected to a host unit through a first interface, where the resource mapping method includes:

acquiring an extended antenna carrier identifier (e-AxCID) configured by a host unit, a first relation between the e-AxCID and the first interface and/or the second interface, and a second relation between the e-AxCID and a physical antenna;

performing resource mapping in data transmission between the host unit and/or the extension unit and the remote unit according to the plurality of e-AxCIDs, the first relationship and the second relationship;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, in the resource mapping method, the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, in the resource mapping method, the first relationship includes a relationship between the e-AxCID and a data carrying location of the second interface.

for the same downlink user plane data, configuring the same e-AxCID to a lower layer sending endpoint in the extension unit and a sending endpoint in the remote unit connected to the extension unit;

for the same user plane data stream of the same shared cell, the sending end points in different remote units configure the same e-AxCID, and the receiving end points rx-endpoint in different remote units configure the same e-AxCID.

Optionally, the resource mapping method, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids, the first relationship and the second relationship, includes:

acquiring downlink transmission data of a target data bearing position transmitted to a target second interface by the extension unit according to the first relation;

routing the downlink transmission data to a physical resource corresponding to the corresponding e-AxCID;

and sending the downlink transmission data to a physical antenna corresponding to the corresponding e-AxCID according to the second relation.

according to the second relation, routing uplink transmission data received by a physical antenna to a physical resource corresponding to the e-AxCID which has a pre-corresponding relation with the physical antenna, and processing the uplink transmission data by the physical resource;

and transmitting the processed uplink transmission data to a target second interface corresponding to the e-AxCID and a target data bearing position of the target second interface according to the first relation.

Optionally, in the resource mapping method, the first interface and the second interface are both common public radio interfaces CPRI, where different e-axcids and physical resources of the remote units have a one-to-one mapping relationship, and different physical resources correspond to different logical functions.

Optionally, in the resource mapping method, the first relationship includes: a relationship of the e-AxCID configured for the second interface to a data carrying location of the second interface.

The embodiment of the present invention further provides a resource mapping method, which is applied to a host unit, where the host unit is connected to an extension unit through a first interface, and the extension unit is connected to a remote unit through a second interface, where the resource mapping method includes:

configuring an extension antenna carrier identification e-AxCID for the extension unit and/or the remote unit, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, in the resource mapping method, the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the extension unit and physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, in the resource mapping method, the first relationship includes:

the e-AxCID configured for the extension unit corresponds to the second interface;

a relationship of the e-AxCID configured for the extension unit and a data carrying position of the second interface;

a relationship of an e-AxCID configured for the remote unit to a data carrying location of the second interface.

a relationship between the e-AxCID configured for a first interface of the extension unit and a data carrying position of the CPRI of the first interface;

a relationship of the e-AxCID configured for a second interface of the extension unit and a data carrying position of the second interface;

a relationship of the e-AxCID configured for a second interface of the remote unit to a data-bearing location of the second interface.

An embodiment of the present invention further provides a resource mapping apparatus, which is applied to an extension unit, where the extension unit is connected to a host unit through a first interface, and connected to a remote unit through a second interface, and the resource mapping apparatus includes:

a first obtaining module, configured to obtain an extended antenna carrier identifier e-AxCID configured by a host unit, and a first relationship between the e-AxCID and the first interface and/or the second interface;

a first resource mapping module, configured to perform resource mapping during data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship;

wherein different e-AxCIDs correspond to different logic functions.

An embodiment of the present invention further provides a resource mapping apparatus, which is applied to a remote unit, where the remote unit is connected to the extension unit through a second interface, and the extension unit is connected to a host unit through a first interface, where the resource mapping apparatus includes:

a second obtaining module, configured to obtain an extended antenna carrier identifier e-AxCID configured by a host unit, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna;

a second resource mapping module, configured to perform resource mapping during data transmission between the host unit and/or the extension unit and the remote unit according to the plurality of e-axcids, the first relationship, and the second relationship;

wherein different e-AxCIDs correspond to different logic functions.

An embodiment of the present invention further provides a resource mapping apparatus, which is applied to a host unit, where the host unit is connected to an extension unit through a first interface, and the extension unit is connected to a remote unit through a second interface, where the resource mapping apparatus includes:

a configuration unit, configured to configure an extended antenna carrier identity e-AxCID, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna for the extension unit and/or the remote unit;

wherein different e-AxCIDs correspond to different logic functions.

An embodiment of the present invention further provides an extension unit, where the extension unit is connected to a host unit through a first interface, and connected to a remote unit through a second interface, and the extension unit includes a transceiver and a processor, where:

the transceiver is configured to: acquiring an extended antenna carrier identifier (e-AxCID) configured by a host unit, and a first relation between the e-AxCID and the first interface and/or the second interface;

the processor is configured to: performing resource mapping during data transmission between the host unit and the remote unit according to the plurality of e-AxCIDs and the first relation;

wherein different e-AxCIDs correspond to different logic functions.

An embodiment of the present invention further provides a remote unit, where the remote unit is connected to the expansion unit through a second interface, the expansion unit is connected to the host unit through a first interface, and the remote unit includes a transceiver and a processor, where:

the transceiver is configured to: acquiring an extended antenna carrier identifier (e-AxCID) configured by a host unit, a first relation between the e-AxCID and the first interface and/or the second interface, and a second relation between the e-AxCID and a physical antenna;

the processor is configured to: performing resource mapping in data transmission between the host unit and/or the extension unit and the remote unit according to the plurality of e-AxCIDs, the first relationship and the second relationship;

wherein different e-AxCIDs correspond to different logic functions.

The embodiment of the present invention further provides a host unit, where the host unit is connected to the extension unit through a first interface, the extension unit is connected to the remote unit through a second interface, and the host unit includes a transceiver, where:

the transceiver is configured to: configuring an extension antenna carrier identification e-AxCID for the extension unit and/or the remote unit, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna;

wherein different e-AxCIDs correspond to different logic functions.

The embodiment of the present invention further provides a base station system, which includes the above extension unit, the remote unit, and the host unit.

At least one of the above technical solutions of the present invention has the following beneficial effects:

the resource mapping method according to the embodiment of the present invention can perform resource mapping during data transmission between the host unit and the remote unit by using the first relationship between the configured e-AxCID and the first interface (e.g., eCPRI) and/or the second interface (e.g., CPRI), thereby implementing resource mapping during hybrid networking of the eCPRI protocol and the CPRI protocol.

Drawings

Fig. 1 is a diagram illustrating an embodiment of a resource mapping method according to the present invention;

FIG. 2 is a diagram of an embodiment of a base station system architecture for implementing the method according to the embodiment of the present invention;

FIG. 3 is an illustration of an embodiment of resource mapping in the embodiment shown in FIG. 2;

FIG. 4 is a second embodiment of a base station system architecture for implementing the method of the present invention;

FIG. 5 is a second embodiment of a resource mapping method according to the present invention;

fig. 6 is a third embodiment of the resource mapping method according to the embodiment of the present invention;

FIG. 7 is a diagram illustrating an embodiment of a resource mapping apparatus according to the present invention;

fig. 8 is a second embodiment of the resource mapping apparatus according to the present invention;

fig. 9 is a third implementation manner of the resource mapping apparatus according to the embodiment of the invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

In order to implement resource mapping for an eCPRI protocol and CPRI protocol hybrid networking, an embodiment of the present invention provides a resource mapping method, where an extension unit and a remote unit are configured with an extension antenna carrier identifier e-AxCID, different e-axcids correspond to different logic functions, and a first relationship between the e-AxCID and a first interface (e.g., an eCPRI) and/or a second interface (e.g., a CPRI) is configured, and by using the configured e-AxCID and the first relationship, resource mapping during data transmission between a host unit and the remote unit can be performed, thereby implementing resource mapping during the eCPRI protocol and CPRI protocol hybrid networking.

Specifically, as shown in fig. 1, the resource mapping method according to an embodiment of the present invention is applied to an extension unit, where the extension unit is connected to a host unit through a first interface and connected to a remote unit through a second interface, and the resource mapping method includes:

s110, acquiring an extended antenna carrier identifier e-AxCID configured by a host unit, and a first relation between the e-AxCID and the first interface and/or the second interface;

s120, performing resource mapping during data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship;

wherein different e-AxCIDs correspond to different logic functions.

By adopting the resource mapping method of the embodiment of the invention, different e-AxCIDs can be configured through the management surface of the host unit, for the extension unit and/or the remote unit, the physical resources of the extension unit and/or the remote unit are divided and managed according to the logic functions in advance, and each physical resource is allocated with the corresponding e-AxCID, namely different e-AxCIDs correspond to different logic functions.

In an embodiment of the present invention, the resource mapping method may be applied to an extended base station system of an eCPRI protocol and CPRI protocol hybrid networking. On the user plane and the control plane, the expansion unit and the host unit are connected through an e-CPRI protocol, and optionally divided through an Option7-2, that is, the first interface is the e-CPRI; the extension unit and the remote unit are connected by a CPRI protocol, optionally divided by an Option8, that is, the second interface is a CPRI.

In another embodiment of the present invention, the resource mapping method is applied to an extended base station system of a hybrid networking system in which a CPRI protocol is converted into a CPRI protocol. On the user plane and the control plane, the host unit and the extension unit are connected by a CPRI protocol, optionally divided by an Option8, that is, the first interface is the CPRI protocol; the extension unit and the remote unit are connected by a CPRI protocol, optionally divided by an Option8, that is, the second interface is still a CPRI.

The resource mapping method according to the embodiment of the present invention is described in detail below with reference to the above embodiments.

As shown in fig. 2, in a base station system for a hybrid networking of an eccri protocol and a CPRI protocol, the base station system includes: host unit 1, expansion unit 2 and remote unit 3.

Wherein, for the bottom layer connection of the base station system:

the host unit 1 is connected with the extension unit 2 by using an Ethernet protocol; the extension unit 2 is connected with the extension unit 2 by using an Ethernet protocol; the extension unit 2 and the remote unit 3 are connected by using the CPRI protocol.

For the user plane, control plane connection of the extension unit 2:

the host unit 1 and the expansion unit 2 are divided by adopting Option7-2, the upper layer of the physical layer is positioned at the host unit 1, the lower layer of the physical layer is positioned at the expansion unit 2 and connected by adopting an e-CPRI protocol;

the expansion unit 2 is divided by adopting Option7-2 and connected by adopting an e-CPRI protocol with the expansion unit 2;

the extension unit 2 and the remote unit 3 are divided by an Option8 and connected by a CPRI protocol.

For management plane connection of the base station system:

a NETCONF protocol is adopted, and modeling is performed based on a YANG language;

the NETCONF client is deployed in the host unit 1, and the NETCONF server is deployed in the extension unit 2;

the host unit 1 and the extension unit 2 are connected by a NETCONF management protocol, and the protocol stack is as follows: NETCONF + Secure Shell (SSH) Protocol + Transmission Control Protocol (TCP) + IP + Virtual Local Area Network (VLAN) + Ethernet Protocol;

the host unit 1 and the remote unit 3 are connected by a NETCONF management protocol, wherein a protocol stack between the extension unit 2 and the remote unit 3 is as follows: NETCONF + SSH + TCP + IP + VLAN + Ethernet + CPRI.

In this embodiment, for the extension unit 2, the extension unit 2 divides and manages the physical resources divided by the Option7-2 according to the logical functions in advance, that is, divides the physical resources to form a physical resource list corresponding to different logical functions; each physical resource in the physical resource list may correspond to a logic function; for example, the bottom physical layer baseband processing resource is divided into a bottom receiving endpoint low-level-rx-endpoints resource and a bottom sending endpoint low-level-tx-endpoints resource according to the transceiving direction.

For remote unit 3, the physical resources divided by Option8 corresponding to remote unit 3 are divided and managed in advance according to the logical functions, that is, the physical resources are divided to form a physical resource list corresponding to different logical functions; each physical resource in the physical resource list may correspond to a logic function; for example, the data exchange resources are divided into rx-endipoints resources and tx-endipoints resources according to the transceiving direction.

For the host unit 1, the NETCONF client on the host unit 1 may read the physical resource list on the extension unit 2 and the physical resource list on the Remote unit 3 respectively through Remote Procedure Call edit configuration (RPC edge-config).

Further, the NETCONF client on the host unit 1 allocates e-AxCID mapped with the logical function to the physical resource on the extension unit 2;

the NETCONF client on the host unit 1 allocates an e-AxCID mapped with logical functions to the physical resources on the remote unit 3.

In addition, in the embodiment of the present invention, according to the shared cell information, the NETCONF client in the host unit 1 further configures a relationship between the e-AxCID of the extension unit 2 and the CPRI interface, and configures a relationship between the e-AxCID of the extension unit 2 and the data carrying position of the CPRI interface.

In the embodiment of the present invention, the data carrying location of the CPRI interface includes, but is not limited to, a relationship that can only include a designated IQ location of the CPRI frame packet.

Further, the NETCONF client of the host unit 1 also configures the relationship of the e-AxCID to the designated IQ position (i.e., data bearer position) of the CPRI frame packet for the remote unit 3.

For the remote unit 3, the NETCONF client of the host unit 1 also configures the remote unit 3 with the e-AxCID in relation to the physical antenna.

According to the foregoing, in the resource mapping method according to the embodiment of the present invention, in the implementation manner, for the extension unit 2, the first interface is an e-CPRI, and the second interface is a CPRI. The extension unit 2 obtains a plurality of e-axcids configured by the NETCONF client of the host unit 1, wherein the configured e-axcids have one-to-one mapping relations with physical resources on the extension unit 2, and different physical resources correspond to different logic functions.

In addition, the extension unit 2 further obtains the first relationship between the configured e-AxCID and the second interface (i.e. CPRI). In this embodiment, the first relationship includes:

the configured e-AxCID corresponds to the second interface;

the e-AxCID is related to a data-bearing location of the second interface (e.g., a designated IQ location for a CPRI data frame packet).

In the embodiment of the present invention, the e-AxCID configured by the host unit 1 for the extension unit 2 satisfies the following rule:

optionally, for the same extension unit, only one e-AxCID is configured for one data stream in the same data transmission direction (uplink or downlink), and the e-axcids of different data streams are different;

Alternatively, the e-axcids configured for the data flows in different data transmission directions may be the same or different for the same extension unit 2.

According to the above-mentioned first relationship and e-AxCID configured by the host unit 1 for the extension unit 2 and the remote unit 3, in conjunction with fig. 2 and 3, the procedure in the downlink direction of data transmission may include:

when the host unit 1 transmits data for a certain logical resource (e.g. for a logical cell, a logical carrier, or a logical transmission channel), different e-AxCID identifiers are marked for different transmitted data streams. After receiving data (downlink transmission data), the extension unit 2 analyzes an e-AxCID field in a packet header of a data packet, and determines a corresponding physical resource, such as a bottom physical layer baseband processing resource, according to a corresponding relationship between the e-AxCID field and the physical resource; or the data packet is forwarded to the next-stage expansion unit for processing;

the physical resource bottom layer physical layer on the extension unit 2 performs corresponding data processing, and after the physical resource processes the data, the data is packed into downlink transmission data in a CPRI (corresponding to the second interface) protocol format;

further, the extension unit 2 places the data to the designated IQ position of the CPRI frame packet of the designated CPRI interface according to the relationship between the pre-configured e-AxCID and the CPRI interface and the relationship (first relationship) between the configured e-AxCID on the extension unit 2 and the designated IQ position of the CPRI frame packet;

the remote unit 3 receives data from the designated IQ position of the designated CPRI interface according to the relationship (first relationship) between the pre-configured e-AxCID and the designated IQ position of the CPRI frame packet, and routes the data to the correct physical resource (e.g. user plane sending endpoint);

further, the remote unit 3 sends the processed data to the designated antenna according to the pre-configured relationship (second state) between the e-AxCID and the physical antenna, so as to realize the transmission of the downlink transmission data sent by the host unit 1 to the remote unit 3.

With reference to fig. 2 and 3, the procedure of the uplink direction of data transmission may include:

the remote unit 3 routes the signal received from the physical antenna to a physical resource corresponding to a certain logical resource (such as a logical cell, a logical carrier, a logical transmission channel, etc.) according to the relationship (second relationship) between the e-AxCID and the physical antenna, which is configured in advance by the host unit 1;

further, the remote unit 3 places the processed data (uplink transmission data) to the designated IQ position of the designated CPRI interface to receive the data according to the relationship (first relationship) between the e-AxCID and the designated IQ position of the CPRI frame packet, which is configured in advance by the host unit 1;

on the basis, the extension unit 2 receives data from the designated IQ position of the CPRI frame packet of the designated CPRI interface according to the relationship between the e-AxCID and the CPRI interface, which is configured in advance by the host unit 1, and the relationship (first relationship) between the e-AxCID of the extension unit 2 and the designated IQ position of the CPRI frame packet, and combines the data if combination is needed and routes the data to a physical resource bottom physical layer on the extension unit;

the physical resource bottom physical layer of the extension unit 2 performs corresponding data processing on the received uplink transmission data, and after the data is processed by the physical resource, the data is packed into an eCPRI (first interface) protocol format, and a corresponding e-AxCID identifier is marked on a corresponding data stream;

after receiving the data, the host unit 1 parses the e-AxCID field in the packet header, performs corresponding processing, and obtains the uplink transmission data transmitted by the remote unit 3.

As described above, in this embodiment, the resource mapping performed by the extension unit in the downlink direction when data is transmitted between the host unit and the remote unit in step S120 includes:

and outputting the downlink transmission data of the second interface protocol to the designated IQ position of the CPRI data frame packet of the target second interface determined according to the first relation.

Further, for the extension unit, in step S120, performing resource mapping when data is transmitted between the host unit and the remote unit in the uplink transmission direction includes:

acquiring uplink transmission data of designated IQ positions of CPRI data frame packets transmitted to a target second interface and the target second interface by the remote unit according to the e-AxCID and the first relation;

For the remote unit 3, the remote unit 3 obtains the designated IQ position relationship (first relationship) of the plurality of e-axcids, the plurality of e-axcids and the CPRI data frame packets of the second interface (CPRI) configured for the remote unit 3 by the host unit 1 and the second relationship between the plurality of e-axcids and the physical antenna, and performs resource mapping when data transmission is performed between the host unit and the remote unit in the downlink transmission direction according to the configured plurality of e-axcids, the first relationship and the second relationship, including:

acquiring downlink transmission data of an appointed IQ position of a CPRI data frame packet transmitted to a target second interface (CPRI) by the extension unit according to the first relation;

For the remote unit 3, in the uplink transmission direction, performing resource mapping when data is transmitted between the host unit and the remote unit includes:

and transmitting the processed uplink transmission data to a target second interface (CPRI) corresponding to the e-AxCID and a designated IQ position of a CPRI data frame packet of the target second interface according to the first relation.

In another embodiment of the present invention, the resource mapping method may also be applied to an extended base station system of a hybrid networking from a CPRI protocol to a CPRI protocol, as shown in fig. 4, where the base station system of this embodiment includes: host unit 1, expansion unit 2 and remote unit 3.

Wherein, for the bottom layer connection of the extended base station: CPRI connection is applied between the host unit 1 and the expansion unit 2, between the expansion unit 2 and between the expansion unit 2 and the remote unit 3;

for the user plane and the control plane connection of the extended base station:

the host unit 1 and the remote unit 3 are divided by adopting Option8, the upper layer of the physical layer is at the host unit 1, the lower layer of the physical layer is at the remote unit 3, and CPRI protocol transmission is adopted between the host unit 1 and the remote unit 3;

for management plane connection of extended base station:

the NETCONF client is deployed in the host unit 1, and the NETCONF server is deployed in the extension unit 2 and the remote unit 3; the protocol stacks among the two are NETCONF + SSH + TCP + IP + VLAN + Ethernet + CPRI.

In this embodiment, for remote unit 3, remote unit 3 divided by Option8 divides and manages physical resources according to logical functions in advance to form a physical resource list; each physical resource in the physical resource list may correspond to a logic function; such as radio frequency processing resources, data exchange resources, etc., are divided into rx-endipoints resources at the receiving end and tx-endipoints resources at the transmitting end according to the transceiving direction.

In this embodiment, the NETCONF client on the host unit 1 can read the physical resource list on the remote unit 3 through RPC edge-config, allocate e-AxCID mapped with logical function to the physical resource on the remote unit 3, and configure the relationship between e-AxCID and physical antenna for O-RU.

In addition, according to the shared cell information, the NETCONF client on the host unit 1 configures the relation between the e-AxCID and the CPRI interface for the extension unit 2;

according to data information carried on the CPRI interface, a NETCONF client on the host unit 1 configures the relation between the e-AxCID and the designated IQ position of a CPRI frame packet for the northbound CPRI interface (CPRI connected with the host unit 1) of the extension unit 2;

the NETCONF client on the O-DU configures the relation between the e-AxCID and the designated IQ position of the CPRI frame grouping for the south CPRI interface (CPRI connected with the remote unit 3) of the extension unit 2;

the NETCONF client on the O-DU configures the relationship between the e-AxCID and the designated IQ position of the CPRI frame packet for the remote unit 3.

According to the foregoing, in the resource mapping method according to the embodiment of the present invention, in this embodiment, for the extension unit 2, the first relationship configured by the host unit 1 for the extension unit 2 includes:

a correspondence between the e-AxCID and a second interface;

a relationship between the e-AxCID configured for a CPRI (first interface) to which the extension unit and the host unit are connected and a data carrying position (designated IQ position of CPRI data frame packet) of the corresponding CPRI interface;

a relationship between the e-AxCID configured for a CPRI (second interface) to which the extension unit and the remote unit are connected and a data carrying position (designated IQ position of CPRI data frame packet) of the corresponding CPRI interface.

For the remote unit 3, the first relationship that the host unit 1 configures for the remote unit 3 includes:

the e-AxCID configured for the CPRI interface (second interface) connected with the extension unit by the remote unit and the relation between the data bearing position (the designated IQ position of the CPRI data frame packet) of the corresponding CPRI interface.

In addition, in the embodiment of the present invention, the e-AxCID configured by the host unit 1 for the extension unit 2 satisfies the following rule:

optionally, for the same remote unit, only one e-AxCID is configured for one data flow in the same data transmission direction (uplink or downlink), and the e-axcids of different data flows are different;

Alternatively, the e-axcids configured for the data flows in different data transmission directions may be the same or different for the same remote unit 3.

According to the above-mentioned e-AxCID and the first and second relationships configured by the host unit 1 for the extension unit 2 and the remote unit 3, and with reference to fig. 4, the procedure of the downlink direction of data transmission may include:

when sending data for a certain logical resource (such as a logical cell, a logical carrier, or a logical sending channel), the host unit 1 sends the data to a designated IQ position of a CPRI frame packet of a designated CPRI interface according to a CPRI protocol;

after receiving the data, the extension unit 2 configures the relationship between the e-AxCID and the designated IQ position of the CPRI frame packet according to the north CPRI interface (the CPRI connected to the host unit 1) of the extension unit 2 and configures the relationship between the e-AxCID and the designated IQ position of the CPRI frame packet according to the south CPRI interface (the CPRI connected to the remote unit 3), and forwards the data to the designated IQ position of the CPRI frame packet of the designated south CPRI interface;

the remote unit 3 transmits the processed data to the designated antenna according to the pre-configured relationship (second relationship) between the e-AxCID and the physical antenna.

With reference to fig. 4, the procedure of the uplink direction of data transmission may include:

the remote unit 3 routes the signal received by the physical antenna to a physical resource corresponding to a certain logical resource (such as a logical cell, a logical carrier, or a logical transmission channel) according to a pre-configured relationship (a second relationship) between the e-AxCID and the physical antenna;

then, the remote unit 3 places the processed data on the designated IQ position of the designated CPRI interface to receive the data according to the relationship (first relationship) between the pre-configured e-AxCID and the designated IQ position of the CPRI frame packet; after the extension unit 2 receives the data, the data is forwarded to the designated IQ position of the CPRI frame packet of the designated northbound CPRI interface according to the relationship between the e-AxCID configured by the northbound CPRI interface of the extension unit 2 and the designated IQ position of the CPRI frame packet and the relationship between the e-AxCID configured by the southbound CPRI interface and the designated IQ position of the CPRI frame packet;

the host unit 1 receives data and performs corresponding processing at the designated IQ position of the CPRI frame packet of the designated CPRI interface, to obtain uplink transmission data transmitted by the remote unit 3.

acquiring downlink transmission data of an appointed IQ position of a CPRI data frame packet in a first target CPRI connected with the extension unit, wherein the downlink transmission data is transmitted by the host unit;

and forwarding the downlink transmission data to an appointed IQ position of a CPRI data frame packet in a second target CPRI connected with the far end according to the first relation.

For the extension unit, in step S120, performing resource mapping when data is transmitted between the host unit and the remote unit in the uplink transmission direction includes:

acquiring uplink transmission data of designated IQ positions of CPRI data frame packets transmitted to a second target CPRI connected with the remote end by the remote end unit and the second target CPRI according to the first relation;

and determining a first target CPRI connected with the extension unit and the appointed IQ position of the CPRI data frame packet of the first target CPRI according to the first relation.

For the remote unit, in step S120, the resource mapping for data transmission between the host unit and the remote unit in the downlink transmission direction includes:

acquiring downlink transmission data of an appointed IQ position of a CPRI data frame packet transmitted to the CPRI connected with the remote unit 3 by the extension unit 1 according to the first relation;

For the remote unit 3, in step S120, the resource mapping when performing data transmission between the host unit and the remote unit in the uplink transmission direction includes:

and transmitting the processed uplink transmission data to a CPRI interface (CPRI connected with an extension unit) corresponding to the e-AxCID and a specified IQ position of a CPRI data frame packet of the CPRI interface according to the first relation.

By adopting the resource mapping method of the embodiment of the invention, the configured e-AxCID and the first relation are utilized to map the resources when data are transmitted between the host unit and the remote unit, thereby realizing the resource mapping when an eCPRI protocol and a CPRI protocol are combined into a network.

By adopting the resource mapping method of the embodiment of the invention, when the eCPRI protocol Option7-2 and the CPRI protocol Option8 are divided into a hybrid network, the management plane allocates different e-AxCID identifiers to the extended unit user plane endpoint under the segmentation of the eCPRI Option7-2 and the remote unit user plane endpoint set under the segmentation of the CPRI Option8 in advance, namely, the remote unit connected with the eCPRI is divided and managed according to the logical function according to the physical resource, and the corresponding e-AxCID is allocated to each physical resource; and the physical resources of the remote units connected with the CPRI are also divided and managed according to the logic function in advance, and corresponding e-AxCID is allocated to each physical resource. When transmitting data to a network element connected with eCPRI, a transmitting end packs the data according to an eCPRI protocol, and a packet header comprises an e-AxCID field corresponding to a logic function; when a receiving end processes data, an e-AxCID field in a packet header is analyzed, and a corresponding physical resource is found; when transmitting data to a network element connected and transmitted by the CPRI, a transmitting end places the data to a specific position of a CPRI frame packet according to the e-AxCID; and after receiving data at the specific position of the CPRI frame grouping, the receiving terminal finds out the corresponding physical resource according to the e-AxCID corresponding to the position.

Another aspect of the embodiments of the present invention further provides a resource mapping method, which is applied to a remote unit, where the remote unit is connected to the extension unit through a second interface, and the extension unit is connected to a host unit through a first interface, as shown in fig. 5, the resource mapping method includes:

s510, acquiring an extended antenna carrier identifier e-AxCID configured by a host unit, a first relation between the e-AxCID and the first interface and/or the second interface, and a second relation between the e-AxCID and a physical antenna;

s520, performing resource mapping during data transmission between the host unit and/or the extension unit and the remote unit according to the plurality of e-axcids, the first relationship and the second relationship;

wherein different e-AxCIDs correspond to different logic functions.

The resource mapping method according to the embodiment of the present invention may be applied to a remote unit, where the remote unit may be applied to an extended base station system in which an eccri protocol and a CPRI protocol are mixed to form a network, or applied to an extended base station system in which a CPRI protocol is converted into a CPRI protocol, and a resource mapping manner when uplink and downlink data transmission is performed in the two systems may specifically refer to the above detailed description, which is not described herein again.

Another embodiment of the present invention further provides a resource mapping method, which is applied to a host unit, where the host unit is connected to an expansion unit through a first interface, and the expansion unit is connected to a remote unit through a second interface, as shown in fig. 6, where the resource mapping method includes:

s610, configuring an extended antenna carrier identifier e-AxCID, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna for the extended unit and/or the remote unit;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, in the resource mapping method, the first relationship includes:

Optionally, the resource mapping method further includes:

and according to the configured e-AxCID, when downlink transmission data is sent to a target logic resource, adding the corresponding e-AxCID to the downlink transmission data according to the target logic resource.

An embodiment of the present invention further provides a resource mapping apparatus, which is applied to an extension unit, where the extension unit is connected to a host unit through a first interface, and connected to a remote unit through a second interface, as shown in fig. 7, and the resource mapping apparatus includes:

a first obtaining module 710, configured to obtain an extended antenna carrier identifier e-AxCID configured by a host unit, and a first relationship between the e-AxCID and the first interface and/or the second interface;

a first resource mapping module 720, configured to perform resource mapping during data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, the resource mapping apparatus, wherein the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the extension unit, and different physical resources correspond to different logical functions.

Optionally, the resource mapping apparatus, wherein the first relationship includes a corresponding relationship between the e-AxCID and the second interface and a relationship between the e-AxCID and a data carrying location of the second interface.

Optionally, the resource mapping apparatus, wherein the e-AxCID satisfies the following rule:

Optionally, the resource mapping apparatus, wherein the first resource mapping module 720 performs resource mapping during data transmission between the host unit and the remote unit according to the e-AxCID and the first relationship, and includes:

Optionally, the resource mapping apparatus, wherein the first resource mapping module 720 performs resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship, and includes:

Optionally, the resource mapping apparatus, wherein the first interface and the second interface are both common public radio interfaces CPRI, and different e-axcids and physical resources of the remote units have a one-to-one mapping relationship, and different physical resources correspond to different logical functions.

Optionally, the resource mapping apparatus, wherein the configured first relationship includes:

An embodiment of the present invention further provides a resource mapping apparatus, which is applied to a remote unit, where the remote unit is connected to the extension unit through a second interface, and the extension unit is connected to a host unit through a first interface, as shown in fig. 8, the resource mapping apparatus includes:

a second obtaining module 810, configured to obtain an extended antenna carrier identifier e-AxCID configured by a host unit, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna;

a second resource mapping module 820, configured to perform resource mapping during data transmission between the host unit and/or the extension unit and the remote unit according to the plurality of e-axcids, the first relationship and the second relationship;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, the resource mapping apparatus, wherein the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, the resource mapping apparatus, wherein the first relationship includes a relationship between the e-AxCID and a data carrying location of the second interface.

Optionally, the resource mapping apparatus, wherein the second resource mapping module 820 performs resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids, the first relationship and the second relationship, and includes:

Optionally, the resource mapping apparatus, wherein the first relationship includes: a relationship of the e-AxCID configured for the second interface to a data carrying location of the second interface.

An embodiment of the present invention provides a resource mapping apparatus, which is applied to a host unit, where the host unit is connected to an extension unit through a first interface, and the extension unit is connected to a remote unit through a second interface, as shown in fig. 9, the resource mapping apparatus includes:

a configuring module 910 configured to configure an extended antenna carrier identity e-AxCID, a first relationship between the e-AxCID and the first interface and/or the second interface, and a second relationship between the e-AxCID and a physical antenna for the extended unit and/or the remote unit;

wherein different e-AxCIDs correspond to different logic functions.

Optionally, the resource mapping apparatus, wherein the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the extension unit and physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, the resource mapping apparatus, wherein the first relationship includes:

Optionally, the resource mapping apparatus, wherein the resource mapping method further includes:

wherein different e-AxCIDs correspond to different logic functions.

Optionally, the extension unit, wherein the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the extension unit, and different physical resources correspond to different logical functions.

Optionally, the extension unit, wherein the first relationship includes a corresponding relationship between the e-AxCID and the second interface and a relationship between the e-AxCID and a data carrying location of the second interface.

Optionally, the extension unit, wherein the e-AxCID satisfies the following rule:

Optionally, the extension unit, wherein the processor performs resource mapping for data transmission between the host unit and the remote unit according to the e-AxCID and the first relationship, and includes:

Optionally, the extension unit, wherein the processor performs resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship, and includes:

Optionally, in the extension unit, the first interface and the second interface are both common public radio interfaces CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, the extension unit, wherein the configured first relationship includes:

wherein different e-AxCIDs correspond to different logic functions.

Optionally, the remote unit, wherein the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, where different e-axcids have a one-to-one mapping relationship with physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, the remote unit, wherein the first relationship comprises a relationship of the e-AxCID to a data carrying location of the second interface.

Optionally, the remote unit, wherein the e-AxCID satisfies the following rule:

Optionally, the remote unit, wherein the processor performs resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids, the first relationship and the second relationship, and comprises:

Optionally, the remote unit, wherein the first interface and the second interface are both common public radio interfaces CPRI, and different e-axcids and physical resources of the remote unit have a one-to-one mapping relationship, and different physical resources correspond to different logical functions.

Optionally, the remote unit, wherein the first relationship comprises: a relationship of the e-AxCID configured for the second interface to a data carrying location of the second interface.

Optionally, the remote unit, wherein the e-AxCID satisfies the following rule:

wherein different e-AxCIDs correspond to different logic functions.

Optionally, the host unit, wherein the first interface is an enhanced common public radio interface e-CPRI, and the second interface is a common public radio interface CPRI, wherein different e-axcids have a one-to-one mapping relationship with physical resources of the extension unit and physical resources of the remote unit, and different physical resources correspond to different logical functions.

Optionally, the host unit, wherein the first relationship includes:

Optionally, the host unit, wherein the e-AxCID satisfies the following rule:

Optionally, the host unit, wherein the resource mapping method further includes:

Optionally, the host unit, wherein the first interface and the second interface are both common public radio interfaces CPRI, and different e-axcids and physical resources of the remote units have one-to-one mapping relationships, and different physical resources correspond to different logical functions.

Optionally, the host unit, wherein the configured first relationship includes:

The embodiment of the invention also provides a base station system, which comprises the extension unit, the remote unit and the host unit.

The specific structure of the base station system according to the embodiment of the present invention may refer to the above detailed description, and is not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. A resource mapping method is applied to an extension unit, the extension unit is connected with a host unit through a first interface, and is connected with a remote unit through a second interface, and the resource mapping method comprises the following steps:

wherein different e-AxCIDs correspond to different logic functions.

2. The method according to claim 1, wherein the first interface is an enhanced common public radio interface (e-CPRI) and the second interface is a Common Public Radio Interface (CPRI), wherein different e-AxCIDs have a one-to-one mapping relationship with physical resources of the extension unit, and different physical resources correspond to different logical functions.

3. The method according to claim 2, wherein the first relationship comprises a correspondence relationship between the e-AxCID and the second interface and a relationship between the e-AxCID and a data carrying position of the second interface.

4. The resource mapping method according to claim 2 or 3, wherein the e-AxCID satisfies the following rule:

5. The method according to claim 3, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the e-AxCID and the first relationship comprises:

6. The method according to claim 3, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-AxCIDs and the first relationship comprises:

7. The method according to claim 1, wherein said first interface and said second interface are Common Public Radio Interfaces (CPRI), wherein different e-AxCIDs have a one-to-one mapping relationship with physical resources of said remote unit, and wherein different physical resources correspond to different logical functions.

8. The resource mapping method of claim 7, wherein the configured first relationship comprises:

9. The method according to claim 7 or 8, wherein the e-AxCID satisfies the following rule:

10. The method according to claim 8, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship comprises:

11. The method according to claim 8, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids and the first relationship comprises:

12. A resource mapping method is applied to a remote unit, the remote unit is connected with an expansion unit through a second interface, and the expansion unit is connected with a host unit through a first interface, and the resource mapping method comprises the following steps:

wherein different e-AxCIDs correspond to different logic functions.

13. The method according to claim 12, wherein the first interface is an enhanced common public radio interface (e-CPRI) and the second interface is a Common Public Radio Interface (CPRI), wherein different e-AxCIDs have a one-to-one mapping relationship with physical resources of the remote unit, and different physical resources correspond to different logical functions.

14. The method according to claim 13, wherein the first relationship comprises a relationship between the e-AxCID and a data carrying location of the second interface.

15. The method according to claim 13 or 14, wherein the e-AxCID satisfies the following rule:

16. The method according to claim 12, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids, the first relationship, and the second relationship comprises:

17. The method according to claim 12, wherein performing resource mapping for data transmission between the host unit and the remote unit according to the plurality of e-axcids, the first relationship, and the second relationship comprises:

18. The method according to claim 12, wherein said first interface and said second interface are common public radio interfaces CPRI, and wherein different e-axcids have a one-to-one mapping relationship with physical resources of said remote units, and different physical resources correspond to different logical functions.

19. The resource mapping method of claim 18, wherein the first relationship comprises: a relationship of the e-AxCID configured for the second interface to a data carrying location of the second interface.

20. The method according to claim 18 or 19, wherein the e-AxCID satisfies the following rule:

21. A resource mapping method is applied to a host unit, the host unit is connected with an extension unit through a first interface, and the extension unit is connected with a remote unit through a second interface, and the resource mapping method comprises the following steps:

wherein different e-AxCIDs correspond to different logic functions.

22. The method according to claim 21, wherein the first interface is an enhanced common public radio interface (e-CPRI) and the second interface is a Common Public Radio Interface (CPRI), wherein different e-AxCIDs have a one-to-one mapping relationship with physical resources of the extension unit and physical resources of the remote unit, and different physical resources correspond to different logical functions.

23. The resource mapping method of claim 22, wherein the first relationship comprises:

24. The method according to claim 22 or 23, wherein the e-AxCID satisfies the following rule:

25. The method according to claim 21, wherein said first interface and said second interface are common public radio interfaces CPRI, and wherein different e-axcids have a one-to-one mapping relationship with physical resources of said remote units, and different physical resources correspond to different logical functions.

26. The resource mapping method of claim 25, wherein the configured first relationship comprises:

27. A resource mapping device is applied to an extension unit, the extension unit is connected with a host unit through a first interface, and is connected with a remote unit through a second interface, the resource mapping device comprises:

wherein different e-AxCIDs correspond to different logic functions.

28. A resource mapping apparatus, applied to a remote unit, wherein the remote unit is connected to an expansion unit through a second interface, and the expansion unit is connected to a host unit through a first interface, the resource mapping apparatus comprising:

wherein different e-AxCIDs correspond to different logic functions.

29. A resource mapping device applied to a host unit, the host unit is connected to an extension unit through a first interface, and the extension unit is connected to a remote unit through a second interface, the resource mapping device comprising:

wherein different e-AxCIDs correspond to different logic functions.

30. An extension unit, through first interface connection between extension unit and the host computer unit, and through second interface connection between the remote unit, extension unit includes transceiver and treater, its characterized in that:

wherein different e-AxCIDs correspond to different logic functions.

31. A remote unit, said remote unit being coupled to an expansion unit via a second interface, said expansion unit being coupled to a host unit via a first interface, said remote unit comprising a transceiver and a processor, wherein:

wherein different e-AxCIDs correspond to different logic functions.

32. A host unit, through first interface connection between host unit and the extension unit, through second interface connection between extension unit and the remote unit, host unit includes transceiver, its characterized in that:

wherein different e-AxCIDs correspond to different logic functions.

33. A base station system comprising an extension unit according to claim 30, a remote unit according to claim 31 and a host unit according to claim 32.