CN115150961A

CN115150961A - Data transmission method, device and base station

Info

Publication number: CN115150961A
Application number: CN202211067574.1A
Authority: CN
Inventors: 黄丹灵
Original assignee: New H3C Technologies Co Ltd
Current assignee: New H3C Technologies Co Ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-10-04

Abstract

The application provides a data transmission method, a data transmission device and a base station, wherein a HUB in the base station acquires optimal RRUs in each RRU in the base station providing radio frequency service for a terminal, when frequency domain data sent by each RRU providing radio frequency service for the terminal are received, the frequency domain data sent by the optimal RRU are forwarded to a BBU in the base station, and the frequency domain data sent by other RRUs are discarded, so that the BBU receives the frequency domain data forwarded by the optimal RRU, the bottom noise in the frequency domain data received by the BBU is less, and the demodulation performance of the frequency domain data is improved.

Description

Data transmission method, device and base station

Technical Field

The present application relates to the field of network communications, and in particular, to a data transmission method, apparatus and base station.

Background

When data transmission is performed under a 5G networking, a terminal sends frequency domain data to each Radio Remote Unit (RRU) providing Radio service for the RRU, and a HUB (HUB) sends the received frequency domain data forwarded by each RRU to a baseband processing Unit (BBU) so that the BBU can process the received frequency domain data.

In the related art, the HUB acquires frequency domain data from each RRU providing a radio frequency service for the terminal, merges the acquired frequency domain data, and sends the merged frequency domain data to the BBU, and when each RRU forwards the frequency domain data, the frequency domain data is interfered by a structure of the RRU or a signal in a region around the RRU, which causes a rise in bottom noise of the merged frequency domain data received by the BBU, so that the demodulation performance of the received merged frequency domain data is reduced.

Disclosure of Invention

The application provides a data transmission method, a data transmission device and a base station, which aim to solve the problem that the demodulation performance of frequency domain data received by a BBU is reduced.

According to a first aspect of embodiments of the present application, a data transmission method is provided, where the method includes:

obtaining an optimal RRU from each RRU in the base station providing radio frequency service for a terminal;

obtaining target frequency domain data from the terminal, which is sent by an RRU providing radio frequency service for the terminal;

and identifying whether the RRU sending the target frequency domain data is the optimal RRU or not, if so, forwarding the target frequency domain data to a baseband processing unit (BBU) in the base station, and if not, discarding the target frequency domain data.

In a possible implementation manner, the obtaining an optimal RRU from radio frequency units RRUs in the base station providing radio frequency service for a terminal includes:

receiving the optimal RRU sent by the BBU;

and the optimal RRU is determined by the BBU according to a channel Sounding Reference Signal (SRS) from the terminal and forwarded by each RRU.

In a possible implementation, before receiving the optimal RRU, the method further includes:

receiving SRS transmitted by each RRU from the terminal;

if the currently received SRS is the SRS transmitted by each RRU and forwarded by the terminal, the RRU with the highest priority is selected from the RRUs, and the SRS received by the selected RRU and forwarded to the BBU;

if the currently received SRS is not the SRS transmitted by each RRU which is received for the first time and is transmitted by the terminal, selecting the RRU with the priority lower than that of the RRU which is selected last time and higher than that of other unselected RRUs from the RRUs, and transmitting the SRS of the terminal received by the selected RRU to the BBU.

In a possible implementation manner, the obtaining target frequency domain data from a terminal sent by an RRU providing a radio frequency service for the terminal includes:

determining a target resource block used by the terminal for transmitting data according to the obtained resource allocation information of the terminal; the resource allocation information comprises at least one resource block, RB;

and obtaining frequency domain data corresponding to the target resource block from the received data, and determining the obtained frequency domain data as the target frequency domain data.

In one possible embodiment, the resource allocation information is obtained by:

and receiving the resource allocation information which is sent by the BBU and allocated by the terminal.

According to a second aspect of embodiments of the present application, there is provided a data transmission apparatus applied to a HUB in a base station in a 5G network, the apparatus including:

the acquisition module is used for acquiring the optimal RRU from each RRU in the base station providing the radio frequency service for the terminal;

the first selection module is used for obtaining target frequency domain data from the terminal, which is sent by an RRU providing radio frequency service for the terminal;

and the identification module is used for identifying whether the RRU sending the target frequency domain data is the optimal RRU or not, if so, forwarding the target frequency domain data to a baseband processing unit (BBU) in the base station, and if not, discarding the target frequency domain data.

In a possible implementation, the obtaining module includes:

the receiving submodule is used for receiving the optimal RRU sent by the BBU;

and the optimal RRU is determined by the BBU according to a channel Sounding Reference Signal (SRS) forwarded by each RRU and coming from the terminal.

In a possible embodiment, the apparatus further comprises:

a receiving module, configured to receive an SRS, which is forwarded by each RRU and sent from the terminal;

a second selection module, configured to select, if a currently received SRS is an SRS from the terminal and forwarded by each RRU received for the first time, an RRU with the highest priority from the RRUs, and forward the SRS of the terminal and received by the selected RRU to the BBU;

and the third selection module is configured to select, if the currently received SRS is not the SRS from the terminal and forwarded by each RRU received for the first time, an RRU from the RRUs whose priority is lower than the priority of the last selected RRU and higher than the priorities of other non-selected RRUs, and forward the SRS, received by the selected RRU, from the terminal to the BBU.

In a possible implementation, the first selection module includes:

a first determining submodule, configured to determine, according to the obtained resource allocation information of the terminal, a target resource block used by the terminal for transmitting data; the resource allocation information includes at least one resource block, RB;

and the second determining submodule is used for obtaining the frequency domain data corresponding to the target resource block from the received data and determining the obtained frequency domain data as the target frequency domain data.

In one possible embodiment, the resource allocation information is obtained by:

According to a third aspect of embodiments herein, there is provided a base station, comprising: a HUB, N radio frequency units RRU connected to said HUB and a baseband processing unit BBU connected to said HUB, N being greater than 1, wherein,

the RRUs are used for providing radio frequency services for the terminal;

the HUB for performing the steps of the method of any of the above first aspects;

the BBU is used for receiving the target frequency domain data.

According to the technical scheme, in the application, the HUB in the base station acquires the optimal RRU in each RRU in the base station providing the radio frequency service for the terminal, when the frequency domain data sent by each RRU providing the radio frequency service for the terminal is received, the frequency domain data sent by the optimal RRU is forwarded to the BBU in the base station, and the frequency domain data sent by other RRUs are discarded, so that the BBU receives the frequency domain data forwarded by the optimal RRU, the bottom noise in the frequency domain data received by the BBU is less, and the demodulation performance of the frequency domain data is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a flow chart illustrating a method of data transmission according to an exemplary embodiment of the present application;

FIG. 2 is a schematic diagram of a 5G networking illustrated in the present application according to an exemplary embodiment;

FIG. 3 is a schematic diagram of a transport block shown in the present application according to an example embodiment;

fig. 4 is a flowchart illustrating an embodiment of the present application for acquiring a channel sounding reference signal from a terminal and forwarded by each RRU;

FIG. 5 is a block diagram of a data transfer device shown in the present application according to an exemplary embodiment;

FIG. 6 is a block diagram of a base station shown in accordance with an exemplary embodiment;

FIG. 7 is a block diagram of an electronic device shown in the present application according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.

The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present specification. The word "if," as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030when" or "in response to a determination," depending on the context.

Referring to fig. 1, fig. 1 is a flowchart of a data transmission method provided in an embodiment of the present application. The process is applied to an application scene of 5G networking. Fig. 2 shows, by way of example, the structure of a base station applied in a 5G networking.

As shown in fig. 2, the base station in the 5G networking at least includes: the system comprises a BBU, a HUB and an RRU, wherein the BBU is used for managing and controlling the HUB and the RRU. One BBU can be connected to at least one HUB, and one HUB can be connected to at least one RRU. Fig. 1 shows, for example, BBU210 directly connected to HUBs 208-209, RRUs 203-205 directly connected to HUB208, and RRUs 206-207 directly connected to HUB 209.

The BBU is used for processing the received signals; the HUB is used for forwarding the received signals; the RRU is configured to convert signals conforming to the format of the common public radio interface in the networking into radio frequency signals, and transmit the radio frequency signals to the user terminal through the antenna, or convert radio frequency signals sent by the user terminal into signals conforming to the format of the common public radio interface and forward the signals to the HUB.

It should be noted that the number and connection relationship of the RRUs, the HUB, and the BBU in fig. 2 are only given as examples, and the number and connection relationship of the RRUs, the HUB, and the BBU in the network are not limited in this embodiment.

Based on the networking shown in fig. 2, the process shown in fig. 1 can be applied to the HUB described above. As shown in fig. 1, the method may include the steps of:

in step 101, a hub obtains an optimal RRU from RRUs in a base station providing radio frequency service for a terminal.

At a base station of a 5G network shown in fig. 2, there may be at least one RRU providing radio frequency service for a terminal UE. In an example, RRUs corresponding to different UEs may be the same or different. For example, taking the UE201 shown in fig. 2 as an example, the RRUs 203-205 provide radio frequency services for the UE 201. Taking the UE202 shown in fig. 2 as an example, the RRUs 205-207 provide radio frequency services for the UE 202.

It should be noted that, the RRU providing the radio frequency service for the terminal may dynamically and timely adjust according to actual conditions, for example: when the location of the terminal changes, the RRU providing the radio frequency service for the terminal may also change accordingly.

As to how to obtain the optimal RRU from the RRUs providing radio frequency services for the terminal, the following description will be given by way of example, and details are not repeated here.

And 102, the HUB acquires target frequency domain data from the terminal, which is sent by the RRU providing the radio frequency service for the terminal.

In one example, the HUB may receive many data at the same time, which may be from different terminals. Based on this, the present step 102 needs to obtain target frequency domain data from the received data.

As an embodiment, this step 102 may obtain the target frequency domain data based on the resource allocation information allocated by the terminal. The resource allocation information here may be configured in advance in the HUB, or may be notified to the HUB by the BBU, and the present embodiment is not particularly limited.

As to how to determine the target frequency domain data according to the resource allocation information, as an embodiment, the HUB in this step 102 obtains the target frequency domain data from the terminal, which is sent by the RRU providing the radio frequency service for the terminal, and includes: determining a target resource block used by the terminal for transmitting data according to the obtained resource allocation information of the terminal; and obtaining frequency domain data corresponding to the target resource block from the received data, and determining the obtained frequency domain data as the target frequency domain data. Wherein the resource allocation information includes at least one resource block, RB.

In the resource blocks shown in fig. 3, there may be at least one resource block for transmitting frequency domain data for the terminal UE. It should be noted that the resource blocks corresponding to different UEs are different. The HUB receives the frequency domain data transmitted by the resource blocks corresponding to different terminals at the same time, for example, taking UE201 as shown in fig. 3 as an example, RB100-RB273 is UE201 for transmitting the frequency domain data. Taking the UE202 shown in FIG. 3 as an example, RB0-RB99 are the frequency domain data transmitted by the UE 202.

In step 103, the hub identifies whether the RRU sending the target frequency domain data is the optimal RRU, if so, step 104 is executed, and if not, step 105 is executed.

And 104, forwarding the target frequency domain data to the BBU in the base station. Step 105, discarding the target frequency domain data.

In an example, the HUB may receive target frequency domain data sent by a plurality of different RRUs, and based on this, step 103 needs to identify whether the RRU sending the target frequency domain data is the optimal RRU.

As an embodiment, step 103 may determine whether the RRU sending the target frequency domain data is the optimal RRU based on the optimal RRU obtained in step 101. As shown in fig. 2, the RRUs providing the radio frequency server for the terminal UE201 are: RRU203-205; if the optimal RRU corresponding to the UE201 is the RRU203, in this case, the RRUs 203 to 205 will respectively send the target frequency domain data sent by the UE201 to the HUB208, and when receiving the target frequency domain data sent by any one of the RRUs 203 to 205, the HUB208 will determine whether the RRU is the optimal RRU203, send the received target frequency domain data sent by the optimal RRU203 to the BBU, and discard the target frequency domain data sent by other RRUs except the RRU 203.

In the present application, when the BBU in the base station receives the target frequency domain data, the target frequency domain data is processed so as to transmit the processed target frequency domain data to the core network through the transmission network, and as for the processing manner of the target frequency domain data by the BBU, in an embodiment, the target frequency domain data is processed by using the manner of processing the frequency domain data by the BBU in the prior art.

The flow shown in fig. 1 is thus completed.

As can be seen from the above technical solutions, in the present application, a HUB in a base station acquires an optimal RRU among RRUs in the base station providing a radio frequency service for a terminal, and when receiving frequency domain data sent by each RRU providing the radio frequency service for the terminal, the frequency domain data sent by the optimal RRU is forwarded to the BBU in the base station, and the frequency domain data sent by other RRUs are discarded, so that the BBU receives the frequency domain data forwarded by the optimal RRU and sent by the terminal, the background noise in the frequency domain data received by the BBU is less, and the demodulation performance of the frequency domain data is improved.

As for the HUB in step 101, the optimal RRU obtained by the HUB from each RRU providing the radio frequency service for the terminal may be configured in the HUB in advance, or may be notified to the HUB by the BBU. As an embodiment, the HUB in step 101 obtains an optimal RRU from each RRU providing a radio frequency service for the terminal, including: receiving an optimal RRU sent by a BBU; the optimal RRU is determined by the BBU according to a channel sounding reference signal SRS forwarded by each RRU and coming from a terminal. How the BBU obtains the SRS from the terminal forwarded by each RRU is described below by way of example in fig. 4, and details are not described here for the moment.

As an embodiment, when the BBU receives a channel sounding reference signal from the terminal, which is forwarded by each RRU and sent by the HUB, the SRS generates an interference signal, and the BBU may determine the optimal RRU based on the interference signal generated in the SRS. Here, the optimal RRU may be determined based on the signal to interference plus noise ratio SINR of the SRS. As to how to determine the optimal RRU according to the SINR, the implementation is not particularly limited.

As an embodiment, the SINR of the optimal RRU forwarding the SRS from the terminal is greater than the SINR of other RRUs providing radio frequency services for the terminal forwarding the SRS from the terminal. Such as: as shown in fig. 2, SINR of SRS corresponding to RRU203, RRU204, and RRU205 are A1, A2, and A3, respectively, where A1 is smaller than A2, and A2 is smaller than A3. Therefore, RRU205 is taken as the optimal RRU.

As for how the BBU acquires the SRS from the terminal forwarded by each RRU, in an example, the HUB only sends the SRS forwarded by one RRU to the BBU at a time, and sends the SRS forwarded by all the RRUs providing radio frequency services for the terminal to the BBU respectively. The HUB sends the SRSs forwarded by all the RRUs providing the radio frequency service for the terminal to the BBU, can send the SRSs forwarded by all the RRUs providing the radio frequency service for the terminal to the BBU for the SRS sent by the terminal each time, and can also select an unselected RRU for all the RRUs providing the radio frequency service for the SRS sent by the terminal each time, send the SRS forwarded by the RRU to the BBU, and can send the SRS forwarded by all the RRUs providing the radio frequency service for the terminal to the BBU after the terminal sends the SRS for many times. The following describes, with reference to fig. 4, a specific step of sending SRSs forwarded by all RRUs providing radio frequency services for the terminal to the BBU:

in step 401, the hub receives the SRS transmitted from the terminal and forwarded by each RRU.

In an embodiment, after the terminal accesses the network, the terminal sends the SRS periodically, and each RRU providing the radio frequency service for the terminal also receives the SRS sent by the terminal periodically, so that the SRS sent by the terminal is respectively forwarded to the HUB by each RRU, and the HUB receives the SRS forwarded by each RRU from the terminal. Such as: as shown in fig. 1, RRUs 203-205 receive SRS transmitted by UE201, and RRUs 205-207 receive SRS transmitted by UE 202.

It should be noted that, when an RRU is one RRU, the HUB sends the SRS, which is forwarded by the one RRU and sent by the terminal, to the BBU, and if two or more RRUs are provided, the SRS of the terminal received by the RRU is sent in the manner of step 402.

Step 402, if the currently received SRS is the SRS from the terminal and forwarded by each RRU received for the first time, step 403 is executed, and if the currently received SRS is not the SRS from the terminal and forwarded by each RRU received for the first time, step 404 is executed.

Step 403, selecting the RRU with the highest priority from the RRUs, and forwarding the SRS of the terminal received by the selected RRU to the BBU;

in an embodiment, the priority of each RRU is preset, or obtained by sequencing according to a preset rule, and the implementation is not particularly limited for the setting manner of the priority of the RRU.

After the priority of each RRU is determined, the corresponding RRU can be acquired according to the priority order. Such as: the RRUs corresponding to the UE201 are RRU203, RRU204, and RRU205, and the priority levels from high to low are: RRU204, RRU203, RRU205.

In this application, when receiving SRSs from a terminal, which are forwarded by all RRUs in each RRU, a HUB is considered to receive an SRS from the terminal once. Such as: the RRUs corresponding to the UE201 are RRU203, RRU204, and RRU205, and the priority levels from high to low are: when the HUB receives the SRS sent by the terminal forwarded by RRU203, RRU204 and RRU205 for the first time, the RRU204 with the highest priority is selected from RRU203, RRU204 and RRU205, and the SRS sent by the terminal received by RRU204 is sent to the BBU, but the SRS sent by the terminal received by RRU203 and RRU205 is not forwarded to the BBU.

Step 404, selecting an RRU from the RRUs whose priority is lower than the priority of the last selected RRU and higher than the priorities of the other non-selected RRUs, and forwarding the SRS of the terminal received by the selected RRU to the BBU.

After the HUB receives the SRS sent by the terminal forwarded by the RRU203, the RRU204 and the RRU205 for the first time, the SRS sent by the terminal received by the RRU204 is sent to the BBU, and if the HUB receives the SRS sent by the terminal forwarded by the RRU203, the RRU204 and the RRU205 again, the SRS sent by the terminal received by the RRU203 is sent to the BBU; if the HUB receives the SRS sent by the terminal forwarded by the RU203, the RRU204, and the RRU205 for the third time, the SRS sent by the terminal received by the RRU205 is sent to the BBU.

It should be noted that, when only one non-selected RRU exists, the selected RRU is taken as the RRU.

In this embodiment, in order to enable the BBU to obtain the SRS forwarded by each RRU, only the SRS received by the currently selected RRU is forwarded to the BBU, and the SRS forwarded by other RRUs providing radio frequency services for the terminal is not forwarded to the BBU. As shown in fig. 2, the RRUs providing radio frequency services for the UE201 are the

RRUs

203, 204, 205, and the

RRUs

203, 204, 205 are all connected to the HUB208, based on which the HUB208 will receive the SRS sent by the

RRUs

203, 204, 205, and if the currently selected RRU is the RRU205, the HUB will only forward the SRS sent by the RRU205 to the BBU, and the

RRUs

203, 204 currently received by the HUB will forward the SRS to the HUB, but will not forward the SRS to the BBU.

It should be noted that, the HUB can respectively send the SRS forwarded by all the RRUs providing the radio frequency service for the terminal to the BBU through the manner in fig. 4, so that the BBU respectively receives the SRS forwarded by each RRU providing the radio frequency service for the terminal. Such as: in the process that the terminal sends the SRS periodically, the HUB sends the SRS forwarded by the RRU203, the RRU204, and the RRU205 to the BBU, and does not combine the SRS forwarded by the RRU203, the RRU204, and the RRU205, so that the BBU receives the RSR forwarded by each RRU.

The flow shown in fig. 4 is completed.

Based on the structure of the base station in the 5G networking illustrated in fig. 2 by way of example, the following description is made by a specific example:

the terminal transmits the SRS. In one embodiment, the terminal may send the SRS to the RRU providing the radio frequency service to the RRU periodically. As shown in fig. 2, taking UE201 as an example, UE201 sends SRS to

RRUs

203, 204, and 205 that provide radio frequency service for it.

As shown in fig. 2, the RRU203 is used as an RRU providing radio frequency service for the UE201, receives an SRS sent by the terminal, and forwards the received SRS to the HUB208, and as for other RRUs providing radio frequency service for the UE201, such as the RRU204 and the RRU205, the processing method is similar to that of the RRU203, and is not described again.

And the HUB receives the SRS transmitted by each RRU from the terminal. In one example, as shown in fig. 2, the HUB208 receives SRS transmitted from the UE201 and forwarded by the RRU203, the RRU204, and the RRU205.

If the currently received SRS is the SRS transmitted by each RRU from the terminal and forwarded by the RRU for the first time, the HUB selects the RRU with the highest priority from the RRUs, and forwards the SRS received by the selected RRU from the terminal to the BBU; if the currently received SRS is not the SRS transmitted by each RRU from the terminal and forwarded by each RRU received for the first time, selecting the RRU with the priority lower than that of the RRU selected last time and higher than that of other unselected RRUs from each RRU, and forwarding the SRS of the terminal received by the selected RRU to the BBU. As shown in fig. 2, if the priority of the RRU203, the RRU204, and the RRU205 is from high to low: the method comprises the steps that the RRU204, the RRU203 and the RRU205 are adopted, the HUB receives the SRS forwarded by the RRU203, the RRU204 and the RRU205 for the first time, then the HUB208 sends the SRS forwarded by the RRU204 to the BBU210, if the HUB receives the SRS forwarded by the RRU203, the RRU204 and the RRU205 for the second time, the RRU203 with the priority lower than that of the RRU204 and higher than that of the unselected RRU205 is selected from the RRU203, the RRU204 and the RRU205, and the SRS forwarded by the RRU203 is sent to the BBU210; and if the HUB receives the SRS forwarded by the RRU203, the RRU204 and the RRU205 for the third time, sending the SRS forwarded by the RRU205 to the BBU210.

The BBU acquires an SRS (sounding reference signal) of a terminal sent by each RRU from the HUB, and determines the optimal RRU according to the SRS forwarded by each RRU, wherein the SINR (signal to interference plus noise ratio) of the SRS forwarded by the optimal RRU from the terminal is greater than the SINR of the SRS forwarded by other RRUs providing radio frequency service for the terminal. As shown in fig. 2, the BBU210 acquires SRSs of the terminals sent by the

RRUs

203, 204, 205 from the HUB208, the HUB208 calculates SINRs of the SRSs of the terminals sent by the

RRUs

203, 204, 205, if the SINRs of the SRSs of the terminals sent by the

RRUs

203, 204, 205 are SINR1, SINR2, SINR3, respectively, and SINR2 is greater than SINR1, SINR1 is greater than SINR3; then, the RRU204 is taken as the optimal RRU, and the SINR of the signal to interference plus noise ratio SINR for forwarding the SRS from the terminal, which is greater than the SINR for forwarding the SRS from the terminal by the

RRUs

203 and 205.

And the BBU sends the optimal RRU to the HUB. As shown in fig. 2, BBU210 sends RRU204 to HUB 208.

The HUB receives the optimal RRU sent by the BBU, and as shown in fig. 2, the HUB208 receives the RRU204 sent by the BBU210.

It should be noted that the sent optimal RRU is identification information of the RRU, and specific content of the identification information may be set according to an actual situation, which is not limited in the present application.

The process of determining the optimal RRU by the HUB is described by way of example above, and the process of acquiring the target frequency domain data from the terminal forwarded by the optimal RRU is described by way of example below.

And the terminal sends the target frequency domain data. In one embodiment, the terminal transmits the target frequency domain data on the resource blocks indicated by the allocated resource allocation information. Here, the BBU is allocated to the terminal, as shown in fig. 3, taking the UE201 as an example, if the resource block indicated by the resource allocation information allocated to the UE201 is the resource block RB100-RB273, the UE201 sends the target frequency domain data to the RRU203, the RRU204, and the RRU205, which provide the radio frequency service to the RRU on the resource block RB100-RB 273.

As for the RRU providing the radio frequency service for the UE201, the target frequency domain data sent by the terminal is received, and the received SRS is forwarded to the HUB, as shown in fig. 2, the RRU203 serves as the RRU providing the radio frequency service for the UE201, receives the target frequency domain data sent by the UE201, and forwards the received target frequency domain data to the HUB208, and as for other RRUs providing the radio frequency service for the UE201, such as the RRU204 and the RRU205, the processing method is similar to that of the RRU203, and is not described again.

And the HUB receives the target frequency domain data which are transmitted by each RRU and come from the terminal. As shown in fig. 2, the HUB208 receives SRS transmitted from the UE201 and forwarded by the RRU203, the RRU204, and the RRU205.

The HUB receives resource allocation information which is sent by the BBU and allocated by the terminal, and determines a target resource block used by the terminal for transmitting data according to the obtained resource allocation information of the terminal; the resource allocation information includes at least one resource block RB; and obtaining frequency domain data corresponding to the target resource block from the received data, and determining the obtained frequency domain data as the target frequency domain data. As shown in fig. 3, the HUB208 receives target frequency domain data from the UE201, which is forwarded by the RRU203, the RRU204, and the RRU205, and if a resource block indicated by the resource allocation information allocated to the UE201 is a resource block RB100-RB273, the target frequency domain data from the UE201, which is forwarded by the RRU203, the RRU204, and the RRU205, is obtained on the resource block RB100-RB 273.

And the HUB acquires the optimal RRU. As shown in fig. 2, the HUB208 receives the RRU204 sent by the BBU210, and takes the RRU204 as an optimal RRU.

The HUB identifies whether the RRU sending the target frequency domain data is the optimal RRU or not, if so, the target frequency domain data is forwarded to the baseband processing unit BBU, and if not, the target frequency domain data is discarded. As shown in fig. 2, if the optimal RRU is the RRU204, the HUB208 determines the RRU204 that sends the target frequency domain data as the optimal RRU, and sends the target frequency domain data on the resource blocks RB100 to RB273 sent by the RRU204 to the BBU210, and discards the frequency domain data on the resource blocks RB100 to RB273 sent by the

RRUs

203 and 205.

The BBU receives the target frequency domain data, and if the HUB sends the target frequency domain data on the resource blocks RB100-RB273 sent by the RRU204 to the BBU210, the BBU210 receives the target frequency domain data on the resource blocks RB100-RB 273.

In the present application, after receiving the target frequency domain data, the BBU may process the target frequency domain data, and in an embodiment, the BBU in the prior art may be used to process the target frequency domain data in a manner of processing the frequency domain data.

Thus, the description of the embodiments is completed.

The method provided by the present application is described above, and the present application also provides embodiments of an apparatus and a system corresponding to the embodiments of the foregoing method.

Referring to fig. 5, fig. 5 provides a data transmission apparatus applied to a HUB in a base station in a 5G network, the data transmission apparatus 500 including:

an obtaining module 501, configured to obtain an optimal RRU from each RRU in a base station that provides a radio frequency service for a terminal;

a first selecting module 502, configured to obtain target frequency domain data from a terminal, where the target frequency domain data is sent by an RRU that provides a radio frequency service for the terminal;

the identifying module 503 is configured to identify whether the RRU that sends the target frequency domain data is the optimal RRU, forward the target frequency domain data to the base band processing unit BBU in the base station if the RRU is the optimal RRU, and discard the target frequency domain data if the RRU is not the optimal RRU.

In a possible implementation, the obtaining module 501 includes:

the receiving submodule is used for receiving the optimal RRU sent by the BBU;

the optimal RRU is determined by the BBU according to a channel sounding reference signal SRS forwarded by each RRU and coming from a terminal.

In a possible implementation manner, the signal-to-interference-plus-noise ratio SINR of the SRS forwarded by the optimal RRU from the terminal is greater than the SINR of the SRS forwarded by each other RRU providing the radio frequency service for the terminal.

In one possible embodiment, the apparatus further comprises:

the receiving module is used for receiving the SRS transmitted by each RRU from the terminal;

the second selection module is used for selecting the RRU with the highest priority from the RRUs if the currently received SRS is the SRS which is transmitted by the RRUs and is forwarded by the terminal and received for the first time, and forwarding the SRS of the terminal received by the selected RRU to the BBU;

and the third selection module is used for selecting the RRU with the priority lower than that of the RRU which is selected last time and higher than that of the other RRUs which are not selected from the RRUs if the SRS received currently is not the SRS transmitted by the RRUs which are transmitted from the terminal and received for the first time, and transmitting the SRS of the terminal received by the selected RRU to the BBU.

In one possible implementation, the first selection module 502 includes:

the first determining submodule is used for determining a target resource block used by the terminal for transmitting data according to the obtained resource allocation information of the terminal; the resource allocation information includes at least one resource block RB;

In one possible embodiment, the resource allocation information is obtained by:

and receiving resource allocation information which is sent by the BBU and allocated by the terminal.

Referring to fig. 6, fig. 6 provides a base station 600, the base station 600 including: the method comprises the following steps of a HUB601, N radio frequency units RRU connected with the HUB601 and a BBU602 connected with the HUB, wherein N is more than 1, and in figure 6, the N radio frequency units RRU are RRU603, RRU604 \8230and \8230respectively,

the RRUs are used for providing radio frequency services for the terminal;

the HUB for performing the steps described in any of the embodiments of the method performed with respect to the HUB described above.

The BBU is used for receiving target frequency domain data.

It should be noted that, after receiving the target frequency domain data, the BBU processes the target frequency domain data. In an embodiment, the target frequency domain data may be processed by using a BBU in the prior art to process the frequency domain data.

Referring to fig. 7, fig. 7 provides an electronic device 700, the electronic device 700 comprising: a processor 701 and a machine-readable storage medium 702;

the machine-readable storage medium 702 stores machine-executable instructions executable by the processor;

the processor 701 is configured to execute machine-executable instructions to implement the data transmission method disclosed in the present embodiment.

Based on the same application concept as the method, the embodiment of the present application further provides a machine-readable storage medium, where the machine-readable storage medium stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions cause the processor to implement the data transmission operation disclosed in the above example.

Here, a machine-readable storage medium may be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: RAM (random Access Memory), volatile Memory, non-volatile Memory, flash Memory, a storage drive (e.g., a hard drive), a solid state drive, any type of storage disk (e.g., an optical disk, a dvd, etc.), or similar storage medium, or a combination thereof.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Furthermore, these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.

It will be understood that the present description is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the description is limited only by the appended claims.

The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims

1. A data transmission method applied to a HUB in a base station in a 5G network, the method comprising:

2. The method of claim 1, wherein the obtaining an optimal RRU from each RRU in the base station providing radio frequency service for a terminal comprises:

receiving the optimal RRU sent by the BBU;

3. The method of claim 2, wherein prior to receiving the optimal RRU, further comprising:

receiving SRS transmitted by each RRU from the terminal;

and if the currently received SRS is not the SRS transmitted by each RRU from the terminal and forwarded by the RRU received for the first time, selecting the RRU with the priority lower than that of the RRU selected last time and higher than that of other unselected RRUs from the RRUs, and forwarding the SRS of the terminal received by the selected RRU to the BBU.

4. The method of claim 1, wherein the obtaining target frequency domain data from a terminal sent by an RRU providing a radio frequency service for the terminal comprises:

5. The method of claim 4, wherein the resource allocation information is obtained by:

6. A data transmission apparatus applied to a HUB in a base station in a 5G network, the apparatus comprising:

an obtaining module, configured to obtain an optimal RRU from RRUs in the base station that provide a radio frequency service for a terminal;

and the identification module is used for identifying whether the RRU sending the target frequency domain data is the optimal RRU or not, if so, the target frequency domain data is forwarded to a baseband processing unit (BBU), and if not, the target frequency domain data is discarded.

7. The apparatus of claim 6, wherein the obtaining module comprises:

the receiving sub-module is used for receiving the optimal RRU sent by the BBU;

8. The apparatus of claim 7, further comprising:

9. The apparatus of claim 6, wherein the first selection module comprises:

10. The apparatus of claim 9, wherein the resource allocation information is obtained by:

and receiving the resource allocation information which is transmitted by the BBU and allocated by the terminal.

11. A base station, characterized in that the base station comprises: a HUB, a N radio frequency units RRU connected to said HUB, and a baseband processing unit BBU connected to said HUB, N being greater than 1, wherein,

the RRUs are used for providing radio frequency service for the terminal;

the HUB for performing the steps of the method of any one of claims 1-5;

the BBU is used for receiving the target frequency domain data.