CN107613566B - Data processing method, base station and non-transitory computer readable storage medium - Google Patents
Data processing method, base station and non-transitory computer readable storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a data processing method, a base station and a non-transitory computer readable storage medium. In one aspect, the data processing method includes: the CU sends scheduling information to the DU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position; the DU determines uplink data on the time-frequency resource bearing the uplink data as uplink forward-transmission data according to the subframe position information and different time-frequency resource position information in the subframe position; and the DU sends the uplink forward data to the CU. In the embodiment of the present invention, since the uplink fronthaul data only includes uplink data on the time-frequency resource carrying the uplink data, when the DU sends the uplink fronthaul data to the CU, only the uplink data on the time-frequency resource carrying the uplink data occupies the fronthaul bandwidth, thereby saving the fronthaul bandwidth resource.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data processing method, a base station, and a non-transitory computer-readable storage medium.
Background
For systems such as LAA (licensed Assisted Access) and MulteFire, uplink transmission in an unlicensed frequency band is supported, and when uplink transmission is performed, a channel Access process, that is, LBT (Listen Before Talk) is performed, is performed first, so that uplink data can be transmitted when a channel is idle, and cannot be transmitted when the channel is occupied. For the uplink scheduled by the base station, a user terminal (such as a mobile phone) performs LBT before a subframe position scheduled by the base station, and transmits uplink data on the subframe if LBT succeeds, or does not transmit uplink data on the subframe if LBT fails. After a DU (Distributed Unit) in a base station receives uplink data, the DU needs to forward the uplink data that is not decoded and/or demodulated to a CU (Central Unit) for processing, but in the prior art, when a user terminal fails LBT on a subframe and the DU sends the uplink data to the CU, a certain forward bandwidth is still reserved in a forward bandwidth for a subframe after the user terminal LBT fails, thereby wasting forward bandwidth resources.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a data processing method, a base station, and a non-transitory computer readable storage medium, so as to solve the problem of wasting a forwarding bandwidth in the prior art.
In a first aspect, an embodiment of the present invention provides a data processing method, where the method is applied in a base station including a central unit CU and a distributed unit DU, and the method includes:
the CU sends scheduling information to the DU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position;
the DU determines uplink data on the time-frequency resource bearing the uplink data as uplink fronthaul data according to the subframe position information and different time-frequency resource position information in the subframe position;
and the DU sends the uplink forwarding data to the CU.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, where the determining, by the DU, according to the subframe location information and the different time-frequency resource location information in the subframe location, that uplink data on the time-frequency resource carrying the uplink data is determined as uplink fronthaul data includes:
the DU detects the time-frequency resources at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position to obtain a detection result, wherein the detection result is used for indicating whether each subframe bears uplink data or not and which time-frequency resources in the subframe bearing the uplink data bear the uplink data;
and the DU determines the uplink data on the time-frequency resource bearing the uplink data in the subframe bearing the uplink data as uplink forward-transmission data according to the detection result.
As to the above-mentioned aspects and any possible implementation manner, there is further provided an implementation manner, where the detecting, by the DU, the time-frequency resource at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position includes:
the DU carries out energy detection on the time-frequency resource at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position;
the DU determines a time frequency resource with an energy value higher than or equal to a first preset threshold as a time frequency resource carrying uplink data;
and the DU determines the time frequency resource with the energy value lower than the first preset threshold as the time frequency resource without carrying the uplink data.
As to the above-mentioned aspects and any possible implementation manner, there is further provided an implementation manner, where the detecting, by the DU, the time-frequency resource at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position includes:
the DU carries out correlation detection on the time-frequency resources at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position to obtain a correlation value;
the DU determines the time frequency resource with the correlation value higher than or equal to a second preset threshold as the time frequency resource carrying uplink data;
and the DU determines the time frequency resource with the correlation value lower than the second preset threshold as the time frequency resource without carrying the uplink data.
As to the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, where after the DU determines, according to the subframe location information and the different time-frequency resource location information in the subframe location, uplink data on the time-frequency resource carrying the uplink data as uplink fronthaul data, the method further includes:
the DU generates indicating information according to the position of the time-frequency resource bearing the uplink data, wherein the indicating information is used for indicating the position number of the time-frequency resource bearing the uplink data corresponding to the uplink fronthaul data;
and the DU sends the indication information to the CU.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, after the DU sends the uplink pre-transmission data to the CU, where the method further includes:
and the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the indication information.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner in which the sending, by the DU, the uplink fronthaul data to the CU includes:
the DU identifies uplink fronthaul data according to the position of the time-frequency resource bearing the uplink data, wherein the identification of the uplink fronthaul data is used for indicating the position number of the time-frequency resource bearing the uplink data corresponding to the uplink fronthaul data;
and the DU sends the identified uplink forwarding data to the CU.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, after the DU sends the uplink pre-transmission data to the CU, where the method further includes:
and the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the identification on the uplink forwarding data.
The above aspect and any possible implementation manner further provide an implementation manner, where the subframe location information includes at least one of the following subframe location information:
subframe position information on ePUCCH, subframe position information on sUCCH, subframe position information on PUSCH, subframe position information on SRS, or subframe position information on sRACH.
In a second aspect, an embodiment of the present invention provides a base station, where the base station includes a central unit CU and a distributed unit DU;
the base station further comprises:
a first sending unit, configured to send scheduling information to the DU through the CU, where the scheduling information includes subframe location information capable of bearing uplink data and different time-frequency resource location information in the subframe location;
a determining unit, configured to determine, according to the subframe location information and different time-frequency resource location information in the subframe location, uplink data on a time-frequency resource carrying the uplink data as uplink fronthaul data by using the DU;
and a second sending unit, configured to send the uplink fronthaul data to the CU through the DU.
In a third aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the following process:
sending scheduling information to a distributed unit DU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position;
and receiving uplink fronthaul data sent by the DU, wherein the uplink fronthaul data is the uplink data on the time-frequency resource which is determined by the DU and bears the uplink data according to the subframe position information and the different time-frequency resource position information in the subframe position.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the following process:
receiving scheduling information sent by a central unit CU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position;
determining uplink data on the time-frequency resource bearing the uplink data as uplink forward-transmission data according to the subframe position information and different time-frequency resource position information in the subframe position;
and sending the uplink forwarding data to the CU.
Any one of the above technical solutions has the following beneficial effects:
in the embodiment of the present invention, after the DU receives the uplink data, according to the subframe location information capable of bearing the uplink data in the scheduling information sent by the CU and the different time-frequency resource location information in the subframe location, the uplink data on the time-frequency resource bearing the uplink data is determined as the uplink fronthaul data, and since the uplink fronthaul data only includes the uplink data on the time-frequency resource bearing the uplink data, when the DU sends the uplink fronthaul data to the CU, only the uplink data on the time-frequency resource bearing the uplink data occupies the fronthaul bandwidth, thereby saving the fronthaul bandwidth resource.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a data processing method according to an embodiment of the present invention;
fig. 2 is a schematic view of an uplink data processing flow according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for implementing step 102 according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for implementing step 301 according to an embodiment of the present invention;
FIG. 5 is a flowchart of another method for implementing step 301 according to an embodiment of the present invention;
FIG. 6 is a flow chart of another data processing method according to an embodiment of the present invention;
FIG. 7 is a flowchart of another method for implementing step 103 according to an embodiment of the present invention;
FIG. 8 is a flow chart of another data processing method according to an embodiment of the present invention;
FIG. 9 is a flow chart of another data processing method according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention 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 be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
In the prior art, when performing uplink transmission in an unlicensed frequency band, a base station first transmits scheduling information to a user terminal (e.g., a mobile phone), where the scheduling information carries subframe location information capable of carrying uplink data and time-frequency resource location information allocated to the user terminal, so that the user terminal can transmit uplink data on corresponding time-frequency resources in subframes capable of carrying uplink data, that is, the base station can allocate a subframe to a plurality of user terminals, each user terminal can occupy part of the time-frequency resources of the subframe to transmit uplink data, after receiving the scheduling information, the user terminal performs LBT on the subframe capable of carrying uplink data, and when the user terminal performs LBT on a subframe successfully, the user terminal transmits uplink data to the base station through the corresponding time-frequency resources on the subframe, after the user terminal fails to perform LBT on a subframe, the user terminal does not send uplink data to the base station through the subframe, and after the process, in the subframes capable of bearing the uplink data, the uplink data of the user terminal is borne on the time-frequency resources in some subframes, the uplink data of the user terminal is not borne on the time-frequency resources in some subframes, and the user terminal sends the uplink data to the base station through the corresponding time-frequency resources on the subframes which succeed in LBT.
The base station comprises a CU and a DU, and the CU and the DU correspond to different protocol stack functions respectively according to different splitting modes of a protocol stack, after a user terminal sends uplink data to the base station through a subframe capable of bearing the uplink data, the DU in the base station processes all data on the subframe capable of bearing the uplink data according to the corresponding protocol stack function, wherein the DU does not decode and/or demodulate the data when processing the data, the DU needs to send the processed data to the CU after processing the data, when sending the data to the CU, a forward transmission bandwidth needs to be allocated to each subframe capable of bearing the uplink data, namely, a certain forward transmission bandwidth can be occupied by a time-frequency resource for successfully sending the uplink and a certain forward transmission bandwidth can be occupied by an uplink time-frequency resource for unsuccessfully sending due to unsuccessful LBT, for example, a certain forward transmission bandwidth can be occupied by the uplink time-frequency resource for unsuccessfully sending the uplink time-frequency resource for successfully sending the LBT, specifically, the Uplink time-frequency resource includes an Uplink time-frequency resource which cannot be transmitted by a corresponding PUSCH (Physical Uplink shared Channel) due to an UL grant (Uplink grant) being not transmitted due to a DL (downlink) LBT failure, and an Uplink time-frequency resource which cannot be transmitted by a PUSCH due to a UL LBT failure, and therefore, a certain waste is caused to a forward bandwidth.
In view of the above problems in the prior art, embodiments of the present invention provide a data processing method, in which uplink data on a subframe carrying the uplink data is determined to be uplink fronthaul data, so that time-frequency resources that are not successfully transmitted do not occupy fronthaul bandwidth, thereby saving fronthaul bandwidth resources.
Fig. 1 is a flowchart of a data processing method according to an embodiment of the present invention, where the method is applied to a base station including a CU and a DU, and as shown in fig. 1, the method includes the following steps:
101. the CU sends scheduling information to the DU. The scheduling information includes subframe location information capable of carrying uplink data and location information of different time-frequency resources in the subframe location.
Specifically, when performing uplink transmission in the unlicensed frequency band, the base station needs to send scheduling information to the user terminal, and the user terminal can bear uplink data on corresponding time-frequency resources according to the scheduling information, so that the scheduling information sent to each user terminal records location information of a subframe capable of bearing the uplink data and time-frequency resource location information of the uplink data bearing the user terminal, and in order to enable the DU to accurately and quickly find a subframe likely to bear the uplink data and a time-frequency resource location likely to bear the uplink data, so as to improve the processing speed of the DU, the CU sends the scheduling information to the DU, and the DU can quickly find the subframe and the time-frequency resource likely to bear the uplink data according to the scheduling information.
In one possible embodiment, the subframe location information includes at least one of the following subframe location information: subframe position information on ePUCCH (Extended Physical Uplink Control Channel), subframe position information on sPUCCH (Short Physical Uplink Control Channel), subframe position information on PUSCH, subframe position information on SRS (Sounding Reference Signal), or subframe position information on scrach (Short Physical Random Access Channel).
It should be noted that, according to different splitting modes of the protocol stack, the CU and the DU respectively correspond to different protocol stack functions, where the protocol stack refers to the sum of protocols of each layer, i.e. CU and DU correspond to different layer protocol functions, respectively, fig. 2 is a schematic diagram of an uplink data processing flow provided by an embodiment of the present invention, as shown in fig. 2, a plurality of layer protocols are included, and CUs and DUs correspond to different layer protocols respectively, for example, the DU corresponding to the right protocol of the mode Option6, the CU corresponding to the left protocol of the Option6, or DU corresponding to the protocol on the right side of the Option7, CU corresponding to the protocol on the left side of the Option7, after the DU receives the uplink data, the DU processes the uplink data according to the corresponding protocol stack function, and then determining the uplink data as uplink forwarding data and sending the uplink forwarding data to the CU, and processing the uplink forwarding data by the CU according to a corresponding protocol stack of the CU.
Note that the CU and the DU may be connected by a wired method, for example, a wired method such as a copper wire or an optical fiber, or may be connected by a wireless method, and may be specifically set according to actual needs, and are not limited herein.
102. And the DU determines the uplink data on the time-frequency resource bearing the uplink data as uplink forwarding data according to the subframe position information capable of bearing the uplink data and the different time-frequency resource position information in the subframe position.
Specifically, because the DU knows the position information of the subframe capable of carrying the uplink data and the position information of the different time-frequency resources at the subframe position, the DU can directly find the time-frequency resources capable of carrying the uplink data, because some time-frequency resources of the uplink data carry the uplink data and some time-frequency resources of the uplink data do not carry the uplink data in the subframe capable of carrying the uplink data, in order to avoid wasting the forward bandwidth resources, when determining the uplink forward data, in the subframe capable of carrying the uplink data, the uplink data on the time-frequency resources carrying the uplink data is determined to be the uplink forward data, at this time, the uplink forward data only includes the uplink data successfully transmitted by the user terminal and does not include the uplink data not transmitted by the user terminal, that is, only the uplink data of the user terminal which correctly receives the UL grant and successfully receives the UL LBT occupies the forward bandwidth, however, uplink data of the ue that does not transmit the UL grant (e.g., the subframe where the UL grant is located cannot be transmitted due to DL LBT), or that has not received the UL grant correctly or that has failed UL LBT does not occupy the forwarding bandwidth.
103. And the DU sends the uplink forwarding data to the CU.
Specifically, the uplink forwarding data only includes uplink data successfully sent by the user terminal and does not include uplink data not sent by the user terminal, so that when the DU sends the uplink forwarding data to the CU, the uplink data not sent does not occupy the forwarding bandwidth, thereby saving the forwarding bandwidth resource.
In a possible implementation manner, fig. 3 is a flowchart of a method for implementing step 102 according to an embodiment of the present invention, as shown in fig. 3, when step 102 is implemented, the method may include the following steps:
301. and the DU detects the time-frequency resources at the corresponding position according to the subframe position information capable of bearing the uplink data and the different time-frequency resource position information in the subframe position to obtain a detection result. And the detection result is used for indicating whether each subframe bears uplink data or not and which time-frequency resources in the subframe bearing the uplink data bear the uplink data.
Specifically, the uplink data is carried in the scheduled time-frequency resource, so that the scheduled time-frequency resource can be detected when the time-frequency resource at the corresponding position is detected.
302. And the DU determines the uplink data on the time-frequency resource bearing the uplink data in the subframe bearing the uplink data as uplink forward transmission data according to the detection result.
In a possible implementation manner, fig. 4 is a flowchart of a method for implementing step 301 according to an embodiment of the present invention, as shown in fig. 4, when step 301 is implemented, the method may include the following steps:
401. and the DU carries out energy detection on the time-frequency resources at the corresponding positions according to the subframe position information capable of bearing the uplink data and the different time-frequency resource position information in the subframe position. When the energy value is higher than or equal to the first preset threshold, step 402 is executed, and when the energy value is lower than the first preset threshold, step 403 is executed.
Specifically, when the energy value is higher than or equal to a first preset threshold, it indicates that the time-frequency resource carries uplink data, and when the energy value is lower than the first preset threshold, it indicates that the time-frequency resource does not carry uplink data.
It should be noted that the value of the first preset threshold is set according to actual needs, and is not specifically limited herein.
402. And the DU determines the time frequency resource with the energy value higher than or equal to a first preset threshold as the time frequency resource carrying the uplink data.
403. And the DU determines the time-frequency resource with the energy value lower than the first preset threshold as the time-frequency resource without bearing the uplink data.
After steps 401 to 403, the DU may determine which time-frequency resources carry uplink data and which time-frequency resources do not carry uplink data, so that the determined uplink fronthaul data only includes uplink data successfully sent by the user terminal and does not include uplink data unsuccessfully sent by the user terminal, and further the unsuccessfully sent uplink data does not occupy fronthaul bandwidth, thereby saving fronthaul bandwidth resources.
In another possible implementation manner, fig. 5 is a flowchart of another method for implementing step 301 according to an embodiment of the present invention, and as shown in fig. 5, when implementing step 301, the method may include the following steps:
501. and the DU carries out correlation detection on the time-frequency resources at the corresponding positions according to the subframe position information capable of bearing the uplink data and the different time-frequency resource position information in the subframe position to obtain correlation values. When the correlation value is higher than or equal to the second preset threshold, step 502 is performed, and when the correlation value is lower than the second preset threshold, step 503 is performed.
Specifically, during the correlation detection, the DU performs conjugate multiplication operation using a known demodulation reference signal and demodulation reference signals corresponding to different time-frequency resources in each subframe to obtain a correlation value, and when the correlation value is higher than or equal to a second preset threshold, it indicates that uplink data is carried on the time-frequency resource, and when the correlation value is lower than the second preset threshold, it indicates that no uplink data is carried on the time-frequency resource.
It should be noted that the value of the second preset threshold is set according to actual needs, and is not specifically limited herein
502. And the DU determines the time frequency resource with the correlation value higher than or equal to a second preset threshold as the time frequency resource carrying the uplink data.
503. And the DU determines the time frequency resource with the correlation value lower than the second preset threshold as the time frequency resource without bearing the uplink data.
After steps 501 to 503, the DU may determine which time-frequency resources carry uplink data and which time-frequency resources do not carry uplink data, so that the determined uplink fronthaul data only includes uplink data successfully transmitted by the user terminal and does not include uplink data unsuccessfully transmitted by the user terminal, and further the unsuccessfully transmitted uplink data does not occupy fronthaul bandwidth, thereby saving fronthaul bandwidth resources.
In a feasible implementation manner, the scheduling information may further include UL grant transmission time-frequency resource location information and UL grant scheduled uplink time-frequency resource location information, the DU determines whether the time-frequency resource carries uplink data, and may determine whether the subframe where the UL grant is located is successfully transmitted according to the DL LBT condition, and if the subframe where the UL grant is located is not successfully transmitted, the time-frequency resource corresponding to the scheduled uplink data is not in the uplink fronthaul data, and further may determine whether the time-frequency resource carries the uplink data according to this principle.
It should be noted that, it is determined whether uplink data and the energy detection or the related detection are carried on the time-frequency resource for separate use or for combined use according to the DL LBT condition, and the specific condition is set according to the actual requirement.
In a feasible implementation manner, fig. 6 is a flowchart of another data processing method provided by the embodiment of the present invention, in order to enable a CU to process uplink data on different time-frequency resources in different subframes by using a corresponding processing manner, after step 102 is executed, as shown in fig. 6, the method further includes:
601. and the DU generates indication information according to the position of the time-frequency resource carrying the uplink data. The indication information is used for indicating the position number of the time-frequency resource which is corresponding to the uplink forwarding data and bears the uplink data.
602. The DU sends the indication information to the CUs.
603. And the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the indication information.
Specifically, when processing uplink fronthaul data corresponding to uplink data on different time-frequency resources in different subframes, different processing manners are adopted, for example, in the same subframe, when processing uplink fronthaul data corresponding to uplink data on the time-frequency resource 1 and uplink fronthaul data corresponding to uplink data on the time-frequency resource 2, that is, when processing uplink fronthaul data corresponding to uplink data on the time-frequency resource 1 and uplink fronthaul data corresponding to uplink data on the time-frequency resource 2, different processing manners are adopted, so that when processing uplink fronthaul data corresponding to uplink data on time-frequency resources in different subframes, a CU needs to obtain a position number of the time-frequency resource bearing the uplink data, and determines a corresponding data processing manner according to the position number, so that the CU can indicate information according to the position number, and processing uplink forwarding data corresponding to the uplink data on the time-frequency resources at different positions by adopting corresponding processing modes.
In an embodiment, fig. 7 is a flowchart of another method for implementing step 103 according to an embodiment of the present invention, in order to enable a CU to process uplink data on different time-frequency resources in different subframes by using a corresponding processing method, as shown in fig. 7, when step 103 is implemented, the method includes the following steps:
701. and the DU identifies the uplink forward data according to the position of the time-frequency resource bearing the uplink data. The identifier of the uplink fronthaul data is used for indicating the position number of the time-frequency resource which bears the uplink data and corresponds to the uplink fronthaul data.
Illustratively, when the position number of the time-frequency resource carrying the uplink data is 1, the uplink fronthaul data corresponding to the uplink data on the time-frequency resource carrying the uplink data is marked as 1, and when the position number of the time-frequency resource carrying the uplink data is 2, the uplink fronthaul data corresponding to the uplink data on the time-frequency resource carrying the uplink data is marked as 2.
702. And the DU sends the identified uplink forward data to the CU.
703. And the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the identification on the uplink forwarding data.
Specifically, when processing uplink forwarding data corresponding to uplink data on different time-frequency resources in different subframes, different processing manners are adopted, for example, in the same subframe, the processing modes of uplink forward data corresponding to the uplink data of the time frequency resource 1 and uplink forward data corresponding to the uplink data of the time frequency resource 2 are different, namely, when processing the uplink forwarding data corresponding to the uplink data on the time-frequency resource 1 and the uplink forwarding data corresponding to the uplink data on the time-frequency resource 2, different processing modes are adopted, therefore, when processing uplink fronthaul data corresponding to uplink data on time-frequency resources in different subframes, a CU needs to acquire a position number of the time-frequency resource carrying the uplink data, and determining a corresponding data processing mode according to the position number so as to process the corresponding uplink forwarding data by adopting the corresponding processing mode.
To further illustrate the technical idea of the present invention, a technical solution of the present invention is now described with reference to a specific application scenario, specifically, taking a MulteFire system as an example, a base station in the MulteFire system includes a CU and a DU, fig. 8 is a flowchart of another data processing method provided in an embodiment of the present invention, and as shown in fig. 8, the method includes the following steps:
801. CU sends subframe location of SUL (scheduled uplink, based on scheduled uplink transmission) and time-frequency resource location information of physical uplink channel at each subframe location to DU.
The physical uplink channel comprises: ePUCCH, sPUCCH, PUSCH, SRS, or sRACH.
802. And the DU detects the corresponding time-frequency resources according to the subframe position of the SUL and the time-frequency resource position information of the physical uplink channel at each subframe position.
The corresponding time-frequency resource detection includes energy detection or correlation detection, and the specific implementation method of the energy detection and the correlation detection is described in detail above and will not be described in detail here.
803. And the DU feeds back the detection result to the CU.
For example, as shown in fig. 2, when the DU performs option7, when the DU detects that an energy value on a PUSCH of a certain time-frequency resource is smaller than a preset threshold, the DU feeds back to the CU that the time-frequency resource does not carry uplink data, that is, the user terminal fails LBT on a subframe corresponding to the time-frequency resource, and when the DU detects that the energy value on the PUSCH of the certain time-frequency resource is higher than or equal to the preset threshold, the DU feeds back to the CU that the time-frequency resource carries uplink data, that is, the user terminal succeeds LBT on the subframe. For example, the detection result may be a position number of a time-frequency resource carrying uplink data corresponding to the uplink fronthaul data.
804. And the DU takes the uplink data on the time-frequency resource bearing the uplink data as uplink forward-transmission data to forward the uplink data to the CU.
Specifically, the uplink forwarding data only includes uplink data carried on a subframe where the LBT of the user terminal is successful, so that the waste of the forwarding bandwidth resource can be avoided during forwarding.
805. And the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the detection result.
To further illustrate the technical idea of the present invention, a technical solution of the present invention is now described with reference to a specific application scenario, specifically, taking a MulteFire system as an example, a base station in the MulteFire system includes a CU and a DU, fig. 9 is a flowchart of another data processing method provided in an embodiment of the present invention, and as shown in fig. 9, the method includes the following steps:
901. the CU sends the subframe location of the gu (non-scheduled uplink transmission) of each user terminal, the time-frequency resource location information of the physical uplink channel corresponding to each subframe, and information such as corresponding activation/deactivation.
The physical uplink channel comprises: ePUCCH, sPUCCH, PUSCH, SRS, or sRACH.
902. And the DU detects the corresponding time-frequency resource position in the GUL activated state according to the subframe position of the GUL, the time-frequency resource position information of the physical uplink channel corresponding to each subframe, activation/deactivation and other information.
The detection on the corresponding time-frequency resource position includes energy detection or correlation detection, and the specific implementation method of the energy detection and the correlation detection is described in detail above and is not described in detail herein.
903. And the DU feeds back the detection result to the CU.
For example, as shown in fig. 2, when the DU performs option7, when the DU detects that an energy value on a PUSCH of a certain time-frequency resource is smaller than a preset threshold, the DU feeds back to the CU that the time-frequency resource does not carry uplink data, that is, the user terminal fails LBT on a subframe corresponding to the time-frequency resource, and when the DU detects that the energy value on the PUSCH of the certain time-frequency resource is higher than or equal to the preset threshold, the DU feeds back to the CU that the time-frequency resource carries uplink data, that is, the user terminal succeeds LBT on the subframe. For example, the detection result may be a position number of a time-frequency resource carrying uplink data corresponding to the uplink fronthaul data.
904. And the DU takes the uplink data on the time-frequency resource bearing the uplink data as uplink forward-transmission data to forward the uplink data to the CU.
Specifically, the uplink forwarding data only includes uplink data carried on a subframe where the LBT of the user terminal is successful, so that the waste of the forwarding bandwidth resource can be avoided during forwarding.
905. And the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the detection result.
Fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention, where the base station includes a CU and a DU, and as shown in fig. 10, the base station further includes:
a first sending unit 1001, configured to send scheduling information to the DU through the CU, where the scheduling information includes subframe location information capable of bearing uplink data and different time-frequency resource location information in the subframe location.
A determining unit 1002, configured to determine, according to the subframe location information and the different time-frequency resource location information in the subframe location, uplink data on the time-frequency resource carrying the uplink data as uplink fronthaul data by using the DU.
A second sending unit 1003, configured to send the uplink fronthaul data to the CU through the DU.
The content that is not described in detail in the embodiments of the present invention refers to the corresponding text descriptions in fig. 1 to 9, and is not described in detail herein.
In the embodiment of the present invention, after the DU receives the uplink data, according to the subframe location information capable of bearing the uplink data in the scheduling information sent by the CU and the different time-frequency resource location information in the subframe location, the uplink data on the time-frequency resource bearing the uplink data is determined as the uplink fronthaul data, and since the uplink fronthaul data only includes the uplink data on the time-frequency resource bearing the uplink data, when the DU sends the uplink fronthaul data to the CU, only the uplink data on the time-frequency resource bearing the uplink data occupies the fronthaul bandwidth, thereby saving the fronthaul bandwidth resource.
Embodiments of the present invention also provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the following processes:
sending scheduling information to a distributed unit DU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position; and receiving uplink fronthaul data sent by the DU, wherein the uplink fronthaul data is the uplink data on the time-frequency resource which is determined by the DU and bears the uplink data according to the subframe position information and the different time-frequency resource position information in the subframe position.
The content that is not described in detail in the embodiments of the present invention refers to the corresponding text descriptions in fig. 1 to 9, and is not described in detail herein.
In the embodiment of the present invention, after the DU receives the uplink data, according to the subframe location information capable of bearing the uplink data in the scheduling information sent by the CU and the different time-frequency resource location information in the subframe location, the uplink data on the time-frequency resource bearing the uplink data is determined as the uplink fronthaul data, and since the uplink fronthaul data only includes the uplink data on the time-frequency resource bearing the uplink data, when the DU sends the uplink fronthaul data to the CU, only the uplink data on the time-frequency resource bearing the uplink data occupies the fronthaul bandwidth, thereby saving the fronthaul bandwidth resource.
Embodiments of the present invention also provide another non-transitory computer-readable storage medium, which stores computer instructions for causing a computer to execute the following processes:
receiving scheduling information sent by a central unit CU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position; determining uplink data on the time-frequency resource bearing the uplink data as uplink forward-transmission data according to the subframe position information and different time-frequency resource position information in the subframe position; and sending the uplink forwarding data to the CU.
The content that is not described in detail in the embodiments of the present invention refers to the corresponding text descriptions in fig. 1 to 9, and is not described in detail herein.
In the embodiment of the present invention, after the DU receives the uplink data, according to the subframe location information capable of bearing the uplink data in the scheduling information sent by the CU and the different time-frequency resource location information in the subframe location, the uplink data on the time-frequency resource bearing the uplink data is determined as the uplink fronthaul data, and since the uplink fronthaul data only includes the uplink data on the time-frequency resource bearing the uplink data, when the DU sends the uplink fronthaul data to the CU, only the uplink data on the time-frequency resource bearing the uplink data occupies the fronthaul bandwidth, thereby saving the fronthaul bandwidth resource.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method 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 there may be other divisions in actual implementation, 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.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are 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) or a Processor (Processor) to execute some steps of the methods according to the 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.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (12)
1. A data processing method applied to a base station comprising a central unit CU and distributed units DU, the method comprising:
the CU sends scheduling information to the DU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position;
the DU determines uplink data on the time-frequency resource bearing the uplink data as uplink fronthaul data according to the subframe position information and different time-frequency resource position information in the subframe position;
and the DU sends the uplink forwarding data to the CU.
2. The method of claim 1, wherein the determining, by the DU, uplink data on a time-frequency resource carrying uplink data as uplink fronthaul data according to the subframe location information and different time-frequency resource location information in the subframe location, comprises:
the DU detects the time-frequency resources at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position to obtain a detection result, wherein the detection result is used for indicating whether each subframe bears uplink data or not and which time-frequency resources in the subframe bearing the uplink data bear the uplink data;
and the DU determines the uplink data on the time-frequency resource bearing the uplink data in the subframe bearing the uplink data as uplink forward-transmission data according to the detection result.
3. The method as claimed in claim 2, wherein the detecting the time-frequency resources at the corresponding location according to the subframe location information and the different time-frequency resource location information in the subframe location by the DU comprises:
the DU carries out energy detection on the time-frequency resource at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position;
the DU determines a time frequency resource with an energy value higher than or equal to a first preset threshold as a time frequency resource carrying uplink data;
and the DU determines the time frequency resource with the energy value lower than the first preset threshold as the time frequency resource without carrying the uplink data.
4. The method as claimed in claim 2, wherein the detecting the time-frequency resources at the corresponding location according to the subframe location information and the different time-frequency resource location information in the subframe location by the DU comprises:
the DU carries out correlation detection on the time-frequency resources at the corresponding position according to the subframe position information and the different time-frequency resource position information in the subframe position to obtain a correlation value;
the DU determines the time frequency resource with the correlation value higher than or equal to a second preset threshold as the time frequency resource carrying uplink data;
and the DU determines the time frequency resource with the correlation value lower than the second preset threshold as the time frequency resource without carrying the uplink data.
5. The method as claimed in claim 3 or 4, wherein after the DU determines uplink data on the time-frequency resource carrying the uplink data as uplink fronthaul data according to the subframe location information and the different time-frequency resource location information in the subframe location, the method further includes:
the DU generates indicating information according to the position of the time-frequency resource bearing the uplink data, wherein the indicating information is used for indicating the position number of the time-frequency resource bearing the uplink data corresponding to the uplink fronthaul data;
and the DU sends the indication information to the CU.
6. The method of claim 5, wherein after the DU sends the upstream fronthaul data to the CU, the method further comprises:
and the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the indication information.
7. The method of claim 3 or 4, wherein the DU sending the upstream fronthaul data to the CU comprises:
the DU identifies uplink fronthaul data according to the position of the time-frequency resource bearing the uplink data, wherein the identification of the uplink fronthaul data is used for indicating the position number of the time-frequency resource bearing the uplink data corresponding to the uplink fronthaul data;
and the DU sends the identified uplink forwarding data to the CU.
8. The method of claim 7, wherein after the DU sends the upstream fronthaul data to the CU, the method further comprises:
and the CU processes the uplink forwarding data by adopting a corresponding processing mode according to the identification on the uplink forwarding data.
9. The method of claim 1, wherein the subframe location information comprises at least one of the following subframe location information:
the method comprises the steps of expanding subframe position information on a physical uplink control channel ePUCCH, subframe position information on a short physical uplink control channel sPUCCH, subframe position information on a physical uplink shared channel PUSCH, subframe position information on a sounding reference signal SRS or subframe position information on a short physical random access channel sRACH.
10. A base station, characterized in that it comprises a central unit CU and a distributed unit DU;
the base station further comprises:
a first sending unit, configured to send scheduling information to the DU through the CU, where the scheduling information includes subframe location information capable of bearing uplink data and different time-frequency resource location information in the subframe location;
a determining unit, configured to determine, according to the subframe location information and different time-frequency resource location information in the subframe location, uplink data on a time-frequency resource carrying the uplink data as uplink fronthaul data by using the DU;
and a second sending unit, configured to send the uplink fronthaul data to the CU through the DU.
11. A non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the following process:
sending scheduling information to a distributed unit DU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position;
and receiving uplink fronthaul data sent by the DU, wherein the uplink fronthaul data is the uplink data on the time-frequency resource which is determined by the DU and bears the uplink data according to the subframe position information and the different time-frequency resource position information in the subframe position.
12. A non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the following process:
receiving scheduling information sent by a central unit CU, wherein the scheduling information comprises subframe position information capable of bearing uplink data and different time-frequency resource position information in the subframe position;
determining uplink data on the time-frequency resource bearing the uplink data as uplink forward-transmission data according to the subframe position information and different time-frequency resource position information in the subframe position;
and sending the uplink forwarding data to the CU.
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| CN110798898B (en) | 2018-08-02 | 2021-10-26 | 大唐移动通信设备有限公司 | Transmission method of configuration information, CU, DU and computer storage medium |
| US20220086885A1 (en) * | 2018-12-28 | 2022-03-17 | Beijing Xiaomi Mobile Software Co., Ltd. | Uplink information transmission method and apparatus, user device and base station |
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