CN114745801A

CN114745801A - Data transmission method, device, physical layer entity, communication equipment and storage medium

Info

Publication number: CN114745801A
Application number: CN202210164625.6A
Authority: CN
Inventors: 范永磊; 梁皓钧
Original assignee: Guangzhou Huiruisitong Technology Co Ltd
Current assignee: Guangzhou Huiruisitong Technology Co Ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-07-12

Abstract

The present disclosure provides a data transmission method, an apparatus, a physical layer entity, a communication device and a computer readable storage medium, which are applied to a physical layer entity on a base station side, wherein the method includes: acquiring indication data sent by a media access control layer entity, and storing the indication data in a first memory; the indication data is related to the user equipment, and the indication data comprises uplink scheduling information; sending uplink scheduling information to user equipment; receiving and analyzing uplink data correspondingly sent by the user equipment according to the uplink scheduling information; and when the uplink data is failed to be analyzed, acquiring the indication data from the first memory, acquiring uplink scheduling information according to the indication data, and sending the uplink scheduling information to the user equipment again so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again. The method and the device can shorten the step that the data needs to be retransmitted after the scheduling fails so as to be scheduled again, and further shorten the time of the retransmission process.

Description

Data transmission method, device, physical layer entity, communication equipment and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, a physical layer entity, a communication device, and a computer-readable storage medium.

Background

The fifth generation mobile communication technology (5G) is the latest generation cellular mobile communication technology. The air interface Protocol framework is divided into a User plane Protocol and a Data plane Protocol, where the User plane Protocol and the Data plane Protocol of a User Equipment (UE) and a 5G base station (next Generation New Radio, gNB) both include a Physical layer (PHY layer), a media access Control layer (MAC layer), a Radio Link Control (RLC layer) and a Packet Data Convergence Protocol (PDCP layer). In the implementation of the 5G base station, the PHY layer is generally responsible for operations with large computation amounts, such as coding and decoding, modulation and demodulation, but the logic responsible for the PHY layer is not complex, and the MAC layer and the upper layers thereof are generally responsible for more complex logic but do not have a large computation amount.

In the related art, there are many interaction modes between the MAC layer and the PHY layer, one of them is a scheme proposed by a Small base station Forum (Small Cell Forum), called a FAPI (home base station Forum Application Programming Interface) protocol, in which an uplink scheduling flow and a downlink scheduling flow are specified, where the MAC layer is specified to send uplink scheduling information or downlink scheduling information to the PHY layer, and the PHY layer sends the uplink scheduling information or downlink scheduling information to the UE; when the PHY layer fails to demodulate the data sent by the UE or receives the unsuccessful demodulation information sent by the UE, the PHY layer sends the unsuccessful scheduling information to the MAC layer, and when the MAC layer receives the unsuccessful scheduling information sent by the PHY layer, the MAC layer sends the uplink scheduling information or the downlink scheduling information to the PHY layer again, so that the PHY layer sends the uplink scheduling information or the downlink scheduling information to the UE again to realize retransmission and rescheduling.

Disclosure of Invention

The inventor finds in a research process of related technologies that, under a standard FAPI protocol, when an initial scheduling failure requires retransmission for rescheduling, the MAC layer must participate in the process, that is, the PHY layer needs to transmit scheduling failure information to the MAC layer, the MAC layer needs to transmit scheduling information to the PHY layer again, and the scheduling information is transmitted to the UE through the PHY layer, that is, a process from the PHY layer to the MAC layer to the PHY layer to the UE needs to be performed in a retransmission process, and the number of steps performed in the process is large, which results in a retransmission process taking much time.

The embodiment of the disclosure provides a data transmission method, a data transmission device, a physical layer entity, a communication device and a computer-readable storage medium, which can shorten the step of re-scheduling data to be retransmitted after scheduling failure, and further shorten the time of a retransmission process.

A first aspect of the embodiments of the present disclosure provides a data transmission method, which is applied to a physical layer entity on a base station side, and includes:

acquiring indication data sent by a media access control layer entity, and storing the indication data in a first memory; the indication data is related to user equipment, and the indication data comprises uplink scheduling information;

sending the uplink scheduling information to the user equipment;

receiving and analyzing uplink data correspondingly sent by the user equipment according to the uplink scheduling information;

and when the uplink data is failed to be analyzed, acquiring the indication data from the first memory, acquiring the uplink scheduling information according to the indication data, and sending the uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again.

In an optional implementation manner, the indication data further includes first version modification rule information, the uplink scheduling information includes first redundancy version indication information, and the first version modification rule information is used for indicating a modification rule of the first redundancy version indication information in the uplink scheduling information; the first redundancy version indication information is used for indicating a redundancy version of the uplink data sent by the user equipment;

when the uplink data analysis fails, acquiring the indication data from the first memory, acquiring the uplink scheduling information according to the indication data, and sending the uplink scheduling information to the user equipment again, where the method includes:

when the uplink data is failed to be analyzed, acquiring the indication data from the first memory;

modifying first redundancy version indication information in the uplink scheduling information according to the first version modification rule information in the indication data;

and sending the modified uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data corresponding to the redundancy version when receiving the modified uplink scheduling information again.

In an optional embodiment, the method further comprises:

and when the uplink data is successfully analyzed, sending analysis success information to the media access control layer entity so that the media access control layer entity releases uplink time-frequency resources corresponding to the indication data.

In an optional embodiment, the method further comprises:

when the uplink data is successfully analyzed or a first data clearing instruction related to the user equipment is received, clearing indication data related to the user equipment in the first memory; the first data clearing instruction is sent to the physical layer entity by the media access control layer entity when the resolving success information sent by the physical layer entity is not received within a first preset time after the indication data is sent.

In an optional embodiment, the method further comprises:

detecting whether a first storage stopping instruction sent by the media access control layer entity is received; the first storage stopping instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current uplink time-frequency resource is detected to reach a first threshold value;

when the first storage stopping instruction is received, stopping storing the indication data received after the first storage stopping instruction, and sending a result of analyzing the uplink data to the media access control layer entity, so that the media access control layer entity controls uplink scheduling according to the result of analyzing the uplink data until the first storage instruction is received; the first storage instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current uplink time-frequency resource is lower than a second threshold value; the first threshold is higher than the second threshold; the first storage instruction is used for indicating the physical layer entity to store indication data and sending the uplink scheduling information to the user equipment again when the uplink data is failed to be analyzed.

A second aspect of the embodiments of the present disclosure provides a data transmission apparatus, which is applied to a physical layer entity on a base station side, and includes:

the device comprises an indication data acquisition module, a first storage and a second storage, wherein the indication data acquisition module is used for acquiring indication data sent by a media access control layer entity and storing the indication data into the first storage; the indication data is related to user equipment, and the indication data comprises uplink scheduling information;

a first sending module, configured to send the uplink scheduling information to the user equipment;

a first receiving module, configured to receive and analyze uplink data that is correspondingly sent by the user equipment according to the uplink scheduling information;

and a second sending module, configured to, when the uplink data is failed to be analyzed, obtain the indication data from the first memory, obtain the uplink scheduling information according to the indication data, and send the uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again.

the second sending module includes:

a first data obtaining unit, configured to obtain the indication data from the first memory when the uplink data is failed to be analyzed;

a first modifying unit, configured to modify, according to the first version modification rule information in the indication data, first redundancy version indication information in the uplink scheduling information;

a first sending unit, configured to send the modified uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data corresponding to the redundancy version when receiving the modified uplink scheduling information again.

In an alternative embodiment, the apparatus further comprises:

and the first successful information sending module is used for sending analysis successful information to the media access control layer entity when the uplink data is successfully analyzed, so that the media access control layer entity releases the uplink time-frequency resource corresponding to the indication data.

In an alternative embodiment, the apparatus further comprises:

an indication data clearing module, configured to clear indication data related to the ue in the first memory when the uplink data is successfully analyzed or a first data clearing instruction related to the ue is received; the first data clearing instruction is sent to the physical layer entity by the media access control layer entity when the resolving success information sent by the physical layer entity is not received within a first preset time after the indication data is sent.

In an alternative embodiment, the apparatus further comprises:

a first instruction detection module, configured to detect whether a first storage stopping instruction sent by the mac layer entity is received; the first storage stopping instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current uplink time-frequency resource is detected to reach a first threshold value;

a first storage stopping module, configured to, when receiving the first storage stopping instruction, stop storing the indication data received after the first storage stopping instruction, and send a result of analyzing the uplink data to the mac layer entity, so that the mac layer entity controls uplink scheduling according to the result of analyzing the uplink data until receiving the first storage instruction; the first storage instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current uplink time-frequency resource is lower than a second threshold value; the first threshold is higher than the second threshold; the first storage instruction is used for indicating the physical layer entity to store indication data and sending the uplink scheduling information to the user equipment again when the uplink data is failed to be analyzed.

A third aspect of the embodiments of the present disclosure provides a data transmission method, applied to a physical layer entity on a base station side, including:

acquiring downlink data sent by a media access control layer entity, and storing the downlink data into a second memory; the downlink data is related to user equipment, and the downlink data comprises downlink scheduling information and data information;

sending the downlink scheduling information and the data information to the user equipment;

receiving result feedback information sent by the user equipment; the result feedback information is used for indicating the result of the user equipment receiving the data information according to the downlink scheduling information;

and when the result feedback information is reception failure information, acquiring the downlink data from the second memory, acquiring the downlink scheduling information and the data information according to the downlink data, and sending the downlink scheduling information and the data information to the user equipment again, so that the user equipment receives the data information again according to the downlink scheduling information.

In an optional implementation manner, the downlink data further includes second version modification rule information, the downlink scheduling information includes second redundancy version indication information, and the second version modification rule information is used for indicating a modification rule of the second redundancy version indication information in the downlink scheduling information; the second redundancy version indication information is used for indicating the redundancy version of the data information;

when the result feedback information is reception failure information, acquiring the downlink data from the second memory, acquiring the downlink scheduling information and the data information according to the downlink data, and sending the downlink scheduling information and the data information to the user equipment again, including:

when the result feedback information is reception failure information, acquiring the downlink data from the second memory;

according to the second version modification rule information in the downlink data, modifying second redundancy version indication information in the downlink scheduling information and determining the data information corresponding to the redundancy version;

and sending the modified downlink scheduling information and the data information corresponding to the redundancy version to the user equipment again so that the user equipment receives the data information corresponding to the redundancy version according to the downlink scheduling information again.

In an optional embodiment, the method further comprises:

and when the result feedback information is successful receiving information, sending successful transmission information to the media access control layer entity so that the media access control layer entity releases downlink time-frequency resources corresponding to the downlink data.

In an optional embodiment, the method further comprises:

and when the result feedback information is successful reception information or a second data clearing instruction related to the user equipment is received, clearing the downlink data related to the user equipment in the second memory, wherein the second data clearing instruction is sent to the physical layer entity by the media access control layer entity when the transmission success information sent by the physical layer entity is not received within a second preset time after the uplink data is sent.

In an optional embodiment, the method further comprises:

detecting whether a second storage stopping instruction sent by the media access control layer entity is received; the second storage stopping instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current downlink time-frequency resource is detected to reach a third threshold value;

when receiving the second storage stopping instruction, stopping storing the downlink data received after the second storage stopping instruction, and sending the received result feedback information to the media access control layer entity, so that the media access control layer entity controls downlink scheduling according to the result feedback information until receiving the second storage instruction; the second storage instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current downlink time-frequency resource is detected to be lower than a fourth threshold value; the third threshold is higher than the fourth threshold; and the second storage instruction is used for indicating the physical layer entity to store downlink data and sending the downlink scheduling information and the data information to the user equipment again when the result feedback information is reception failure information.

A fourth aspect of the present disclosure provides a data transmission apparatus, applied to a physical layer entity on a base station side, including:

a downlink data acquisition module, configured to acquire downlink data sent by a media access control layer entity and store the downlink data in a second memory; the downlink data is related to user equipment, and the downlink data comprises downlink scheduling information and data information;

a third sending module, configured to send the downlink scheduling information and the data information to the user equipment;

a second receiving module, configured to receive result feedback information sent by the user equipment; the result feedback information is used for indicating the result of the user equipment receiving the data information according to the downlink scheduling information;

and a fourth sending module, configured to, when the result feedback information is reception failure information, obtain the downlink data from the second memory, obtain the downlink scheduling information and the data information according to the downlink data, and send the downlink scheduling information and the data information to the user equipment again, so that the user equipment receives the data information according to the downlink scheduling information again.

the fourth sending module includes:

a second data obtaining unit, configured to obtain the downlink data from the second memory when the result feedback information is reception failure information;

a second modifying unit, configured to modify, according to the second version modification rule information in the downlink data, second redundancy version indication information in the downlink scheduling information and determine the data information of a corresponding redundancy version;

a second sending unit, configured to send the modified downlink scheduling information and the data information corresponding to the redundancy version to the user equipment again, so that the user equipment receives the data information corresponding to the redundancy version again according to the downlink scheduling information.

In an alternative embodiment, the apparatus further comprises:

and a second successful information sending module, configured to send transmission successful information to the mac layer entity when the result feedback information is reception successful information, so that the mac layer entity releases downlink time-frequency resources corresponding to the downlink data.

In an alternative embodiment, the apparatus further comprises:

and a downlink data clearing module, configured to clear downlink data related to the ue in the second memory when the result feedback information is successful reception information or a second data clearing instruction related to the ue is received, where the second data clearing instruction is sent to the physical layer entity when the mac layer entity does not receive successful transmission information sent by the physical layer entity within a second preset time after sending the uplink data.

In an alternative embodiment, the apparatus further comprises:

a second instruction detection module, configured to detect whether a second storage stop instruction sent by the mac layer entity is received; the second storage stopping instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current downlink time-frequency resource is detected to reach a third threshold value;

a second storage stopping module, configured to, when receiving the second storage stopping instruction, stop storing the downlink data received after the second storage stopping instruction, and send the received result feedback information to the mac layer entity, so that the mac layer entity controls downlink scheduling according to the result feedback information until receiving the second storage instruction; the second storage instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current downlink time-frequency resource is lower than a fourth threshold value; the third threshold is higher than the fourth threshold; and the second storage instruction is used for indicating the physical layer entity to store downlink data and sending the downlink scheduling information and the data information to the user equipment again when the result feedback information is reception failure information.

A fifth aspect of the embodiment of the present disclosure provides a physical layer entity on a base station side, including a first processor, a first memory, a third memory, and a first communication bus, where the processor, the first memory, and the third memory complete communication with each other through the first communication bus;

the first memory is used for storing the indication data sent by the media access control layer entity;

the third memory is used for storing computer programs;

the first processor is configured to implement the steps of the data transmission method according to the first aspect when executing the program stored in the third memory.

A sixth aspect of the embodiments of the present disclosure provides a communication device on a base station side, including a medium access control layer entity and a physical layer entity as described in the fifth aspect, where the medium access control layer entity is configured to send the indication data to the physical layer entity.

A seventh aspect of the present disclosure provides a physical layer entity at a base station side, including a second processor, a second memory, a fourth memory, and a second communication bus, where the processor, the second memory, and the fourth memory complete communication with each other through the second communication bus;

the second memory is used for storing downlink data sent by a media access control layer entity;

the fourth memory is used for storing computer programs;

the second processor is configured to implement the steps of the data transmission method according to the third aspect when executing the program stored in the fourth memory.

An eighth aspect of the present disclosure provides a communication device at a base station side, including a medium access control layer entity and the physical layer entity according to the seventh aspect, where the medium access control layer entity is configured to send the downlink data to the physical layer entity.

A ninth aspect of an embodiment of the present disclosure proposes a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the steps of the data transmission method according to the first aspect or the steps of the data transmission method according to the third aspect.

According to the technical scheme, the beneficial effects of the embodiment of the disclosure are as follows: the embodiment of the disclosure provides a data transmission method, a data transmission device, a physical layer entity, a communication device and a computer readable storage medium, wherein the method is applied to the physical layer entity at a base station side, and comprises the following steps: when the uplink is scheduled, acquiring indication data sent by a media access control layer entity, and storing the indication data in a first memory; the indication data is related to user equipment, and the indication data comprises uplink scheduling information; sending the uplink scheduling information to the user equipment; receiving and analyzing uplink data correspondingly sent by the user equipment according to the uplink scheduling information; when the uplink data is failed to be analyzed, acquiring the indication data from the first memory, acquiring the uplink scheduling information according to the indication data, and sending the uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again; during downlink scheduling, acquiring downlink data sent by a media access control layer entity, and storing the downlink data into a second memory; the downlink data is related to user equipment, and the downlink data comprises downlink scheduling information and data information; sending the downlink scheduling information and the data information to the user equipment; receiving result feedback information sent by the user equipment; the result feedback information is used for indicating the result of the user equipment receiving the data information according to the downlink scheduling information; and when the result feedback information is reception failure information, acquiring the downlink data from the second memory, acquiring the downlink scheduling information and the data information according to the downlink data, and sending the downlink scheduling information and the data information to the user equipment again, so that the user equipment receives the data information again according to the downlink scheduling information. According to the technical scheme, when the re-scheduling is needed, the physical layer entity is only required to issue the stored indication data or downlink data to the user equipment again, the process from the PHY layer to the MAC layer to the PHY layer to the UE is not required, the step of re-transmitting the data to re-schedule after the scheduling failure can be shortened, and the time of the re-transmitting process is further shortened.

Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the disclosure may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

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.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic flowchart of a base station implementing uplink scheduling in the related art;

fig. 2 is a schematic flow chart of a base station implementing downlink scheduling in the related art;

fig. 3 is a schematic flow chart of a data transmission method proposed in the first aspect of the embodiment of the present disclosure;

fig. 4 is a detailed flowchart of step S410 in fig. 3;

fig. 5 is a schematic flow chart of a base station implementing uplink scheduling in a data transmission method according to a first aspect of the present disclosure;

fig. 6 is a schematic structural diagram of a data transmission apparatus according to a second aspect of the embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of the second sending module 410 in fig. 6;

fig. 8 is a flowchart illustrating a data transmission method according to a third aspect of the embodiment of the present disclosure;

fig. 9 is a detailed flowchart of step S420 in fig. 8;

fig. 10 is a schematic flow chart of a base station implementing downlink scheduling in a data transmission method according to a third aspect of the present disclosure;

fig. 11 is a schematic structural diagram of a data transmission apparatus according to a fourth aspect of the embodiment of the present disclosure;

fig. 12 is a detailed structural diagram of the fourth sending module 420 in fig. 11;

fig. 13 is a schematic structural diagram of a physical layer entity according to a fifth aspect of the embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of a communication device according to a sixth aspect of the embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of a physical layer entity proposed in a seventh aspect of the embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a communication device according to an eighth aspect of the embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the fifth Generation mobile communication technology, an air interface Protocol framework thereof is divided into a User plane Protocol and a Data plane Protocol, wherein the User plane Protocol and the Data plane Protocol of a User Equipment (UE) and a 5G base station (next Generation New Radio, gNB) both include a Physical layer (PHY layer), a Media Access Control layer (MAC layer), a Radio Link management (RLC layer) and a Packet Data Convergence Protocol layer (PDCP layer). The physical layer entity referred in the present disclosure may be a board card, a chip, a circuit, etc. having a physical layer related function, or may be a communication device having a physical layer related function, such as a BBU (Building base band Unit); the media access control layer entity may be a board, a chip, a circuit, etc. having the media access control layer function, or may be a communication device such as a BBU having the physical layer related function. It should be noted that, in the present disclosure, the "uplink" communication refers to a communication process from the user equipment to the base station, the correspondingly transmitted data is uplink data, the "downlink" communication refers to a communication process from the base station to the user equipment, the correspondingly transmitted data is downlink data, the "uplink scheduling" refers to a scheduling control process for the base station to transmit data from the user equipment to the base station, and the "downlink scheduling" refers to a scheduling control process for the base station to transmit data from the base station to the user equipment.

Under a standard FAPI protocol, when primary scheduling failure needs retransmission to be scheduled again, an MAC layer needs to participate in the process, namely a PHY layer needs to send scheduling failure information to the MAC layer, the MAC layer needs to send scheduling information to the PHY layer again, the scheduling information is sent to UE through the PHY layer, namely the process from the PHY layer to the MAC layer to the PHY layer to the UE needs to be carried out in the retransmission process, the number of steps in the process is large, and therefore more time needs to be spent in the retransmission process, FIG. 1 is a schematic flow diagram of realizing uplink scheduling of a base station under the standard FAPI protocol, and FIG. 2 is a schematic flow diagram of realizing downlink scheduling of the base station under the standard FAPI protocol. In fig. 1, during initial uplink scheduling, the MAC layer sends UL _ DCI to the PHY layer, where the request carries Information related to DCI0(DCI, Downlink Control Information, where DCI0 is used to provide Control Information related to PUSCH when a cell uplink direction schedules a physical uplink shared channel PUSCH transmission, and DCI1 is used to provide Control Information related to PDSCH when a cell Downlink direction schedules a physical Downlink shared channel PDSCH transmission); the PHY layer sends the information related to the DCI0 to the UE through an air interface; the MAC layer sends UL _ TTI _ request to the PHY layer, and informs the PHY layer how to analyze uplink data to be sent by the UE; the PHY layer analyzes the data according to the indication of UL _ TTI.request when receiving the uplink data sent by the UE, and when the analysis is successful, the PHY layer sends CRC.indication related to the information carrying the successful analysis to the MAC layer and sends the successfully analyzed data, namely the transmission block to the MAC layer through RX _ Data.indication; when the analysis fails, the PHY layer sends the crc.indication related to the information carrying the analysis failure to the MAC layer, after the MAC receives the crc.indication related to the information carrying the analysis failure, the MAC sends the DCI0 again in the next uplink scheduling, compared with the DCI0 sent last time, the NDI (New Data Indication) field of the DCI0 sent this time is not inverted and is sent to the UE through the PHY layer, and the UE knows that the uplink Data needs to be sent again after receiving the DCI. In fig. 2, during the initial downlink scheduling, the MAC layer sends a DL _ tti request to the PHY layer, where the DL _ tti request carries information related to DCI1 and PDSCH information; the PHY layer sends the DCI1 related information and the PDSCH related information to the UE through an air interface, and the PDSCH related information indicates how the PHY layer modulates and sends the data to be sent; the MAC layer sends a TX _ Data request to the PHY layer, wherein the TX _ Data request carries data to be sent; the PHY layer sends the DCI1 and the data to be sent to the UE through an air interface; when the PHY layer receives successful reception information (ACKresponse) sent by the UE, the PHY layer sends UCI.indication related to the successful reception information to the MAC layer; when receiving the reception failure information (NACK response) sent by the UE, the PHY layer sends uci.indication related to the reception failure information to the MAC layer, and the MAC layer sends the DCI1 again in the next uplink scheduling, where the NDI field of the DCI1 sent this time is not inverted compared with the DCI1 sent last time and is sent to the UE through the PHY layer, and the UE knows that the received downlink data is retransmitted downlink data after receiving the DCI1 sent this time.

In order to solve the technical problem that in the related art, a retransmission process takes more time due to more steps in the retransmission process during scheduling, a first aspect of the embodiments of the present disclosure provides a data transmission method. Please refer to fig. 3 to fig. 5, wherein fig. 3 is a schematic flowchart of a data transmission method according to a first aspect of the present disclosure, fig. 4 is a schematic flowchart of step S410 in fig. 3, and fig. 5 is a schematic flowchart of a base station implementing uplink scheduling in the data transmission method according to the first aspect of the present disclosure. The data transmission method provided by the embodiment of the disclosure is applied to a physical layer entity at a base station side, and includes:

step S110, acquiring indication data sent by a media access control layer entity, and storing the indication data in a first memory; the indication data is related to the user equipment, and the indication data comprises uplink scheduling information;

step S210, sending uplink scheduling information to user equipment;

step S310, receiving and analyzing uplink data correspondingly sent by the user equipment according to the uplink scheduling information;

step S410, when the uplink data analysis fails, obtaining the indication data from the first memory, obtaining the uplink scheduling information according to the indication data, and sending the uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again.

It should be noted that the uplink scheduling information is used to indicate uplink time-frequency resources of the user equipment.

In the embodiment of the present disclosure, the physical layer entity of the base station is utilized to store the indication data sent by the medium access control layer entity, the indication data includes uplink scheduling information, when the physical layer entity sends the uplink scheduling information to the user equipment and fails to receive the uplink data sent by the user equipment, the uplink scheduling information can be directly obtained from the stored indication data, and the uplink scheduling information is directly retransmitted without passing through the medium access control layer entity, so that the user equipment retransmits the uplink data. By the method, the process from the physical layer to the media access control layer to the physical layer to the user equipment is not needed when the uplink scheduling fails, only the physical layer is needed, the step of retransmitting data for re-scheduling after the scheduling fails can be shortened, and the time of the retransmission process is further shortened. It should be noted that the uplink scheduling Information is specifically DCI0(DCI, Downlink Control Information, where DCI0 is used to provide PUSCH-related Control Information when a cell uplink direction schedules a physical uplink shared channel PUSCH transmission, and DCI1 is used to provide PDSCH-related Control Information when a cell Downlink direction schedules a physical Downlink shared channel PDSCH transmission), DCI0 is scheduling Information sent by a base station to a user equipment, and is used to indicate that the user equipment should select an uplink time-frequency resource where data is sent when sending data to the base station, that is, indicate at which time and which subcarrier or subcarriers the user equipment should send data, when the user equipment receives DCI0 sent by the base station, it can know from DCI0 at which time and subcarrier or subcarriers the base station requires to send data, when the user equipment needs to send data to the base station, then, the data is sent on the time-frequency resource indicated by the DCI0, and finally, when the base station receives the data sent by the user equipment, the data sent by the user equipment to the base station can be acquired on the time-frequency resource indicated by the DCI 0.

In an optional implementation manner, the indication data further includes first version modification rule information, the uplink scheduling information includes first redundancy version indication information, and the first version modification rule information is used to indicate a modification rule of the first redundancy version indication information in the uplink scheduling information; the first redundancy version indication information is used for indicating the redundancy version of uplink data sent by user equipment;

step S410 includes:

step S411, when the uplink data analysis fails, acquiring indication data from a first memory;

step S412, modifying the first redundancy version indication information in the uplink scheduling information according to the first version modification rule information in the indication data;

step S413, the modified uplink scheduling information is sent to the user equipment again, so that the user equipment retransmits the uplink data corresponding to the redundancy version when receiving the modified uplink scheduling information again.

The Redundancy Version (RV) is designed to implement an incremental Redundancy HARQ (Hybrid Automatic Retransmission Request) mechanism, that is, Redundancy bits generated by an encoder are divided into a plurality of groups, each RV defines a transmission starting point, and different RVs are respectively used for first transmission and each HARQ Retransmission to implement gradual accumulation of the Redundancy bits and complete incremental Redundancy HARQ operation. In this embodiment, the physical layer entity of the base station modifies the first redundancy version indication information in the uplink scheduling information according to the first version modification rule information in the indication data, and sends the modified uplink scheduling information to the user equipment again, so that when the user equipment receives the modified uplink scheduling information sent again by the base station, the user equipment obtains the redundancy version to be sent from the first redundancy version indication information, and sends the uplink data corresponding to the redundancy version again according to the indication of the uplink scheduling information. In a specific implementation, the first version modification rule information may be defined as 1 or 0, and when the first version modification rule information is 1, the rule indicating the modification of the redundancy version is: 0 → 2 → 1 → 3, when the first version modification rule information is 0, the rule indicating the redundant version modification is: 0 → 3 → 2 → 1, which can be adjusted according to the actual situation, and is not limited herein. To further explain, when the first version modification rule information is 1, the rule indicating the redundancy version modification is: 0 → 2 → 1 → 3, if the first redundancy version indication information in the uplink scheduling information is 0 in the last scheduling, the ue sends the uplink data with redundancy version 0 according to the indication in the first redundancy version indication information in the uplink scheduling information, and the first redundancy version indication information in the uplink scheduling information is modified to 2 in this scheduling, and the ue sends the uplink data with redundancy version 2 according to the indication in the first redundancy version indication information in the uplink scheduling information. The base station analyzes the uplink data according to the received uplink data of different redundancy versions. The method of analyzing and processing the same data after receiving different redundancy versions is common knowledge of those skilled in the art, and will not be described herein again.

In an optional implementation manner, the uplink scheduling information further includes uplink new data indication information, and the uplink new data indication information is used for indicating a relationship between the current uplink scheduling and the last uplink scheduling. The data transmission method of the embodiment of the present disclosure further includes: and when the uplink data analysis fails, modifying the uplink new data indication information in the uplink scheduling information. Specifically, the uplink New Data Indication information may be an NDI (New Data Indication), and when the value of the NDI in the current uplink scheduling is different from the value of the NDI in the previous uplink scheduling, that is, when 0 is changed to 1 or when 1 is changed to 0, it indicates that the current uplink scheduling is the rescheduling of the previous uplink scheduling, and when it is determined that the value of the NDI in the uplink scheduling information received twice has the change, the ue retransmits the uplink Data sent in the previous scheduling in the current scheduling; when the NDI values in the uplink scheduling of this time are the same as the NDI values in the uplink scheduling of the last time, that is, both are 1 or both are 0, it indicates that the uplink scheduling of this time is not associated with the uplink scheduling of the last time, and the ue sends new uplink data according to the scheduling when determining that the NDI values in the uplink scheduling information received twice are the same.

In an optional implementation manner, the data transmission method provided in this embodiment further includes:

In this embodiment, the medium access control layer entity allocates the uplink time-frequency resource, and after allocating the uplink time-frequency resource allocated by the uplink scheduling to the physical layer entity, locks the uplink time-frequency resource of the uplink scheduling, that is, when the uplink time-frequency resource is not released, the medium access control layer entity cannot allocate the part of the uplink time-frequency resource to other user equipment, so as to avoid the conflict of the uplink time-frequency resource.

when the uplink data is successfully analyzed or a first data clearing instruction related to the user equipment is received, clearing indication data related to the user equipment in a first memory; the first data clearing instruction is sent to the physical layer entity by the media access control layer entity when the resolving success information sent by the physical layer entity is not received within the first preset time after the indication data is sent.

In this embodiment, the first memory in the physical layer entity is mainly used for storing the indication data of the medium access control layer entity, and avoids notifying the medium access control layer entity again when uplink scheduling needs to be performed again, so that when the physical layer entity successfully analyzes the uplink data, the scheduling is successful without performing uplink scheduling again, and therefore, the indication data related to the user equipment in the first memory can be cleared; or, when the physical layer entity receives a first data clearing instruction related to the user equipment, the physical layer entity indicates that the physical layer entity still cannot be successfully scheduled after rescheduling at the first preset time, and the physical layer entity clears the corresponding indication data when the physical layer entity considers that the scheduling fails. In an optional implementation manner, in order to further avoid a situation that the scheduling effect is affected by too much time-frequency resources being locked, a first preset time is set, and in uplink scheduling, when the media access control layer entity module does not receive analysis success information sent by the physical layer entity within the first preset time after sending the indication data to the physical layer entity, the uplink time-frequency resources corresponding to the indication data are released.

detecting whether a first storage stopping instruction sent by a media access control layer entity is received; the first storage stopping instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current uplink time-frequency resource reaches a first threshold value;

when a first storage stopping instruction is received, stopping storing the received indication data after the first storage stopping instruction, and sending a result of analyzing the uplink data to a media access control layer entity, so that the media access control layer entity controls uplink scheduling according to the result of analyzing the uplink data until the first storage instruction is received; the first storage instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current uplink time-frequency resource is lower than a second threshold value; the first threshold is higher than the second threshold; the first storage instruction is used for indicating the physical layer entity to store the indication data and sending the uplink scheduling information to the user equipment again when the uplink data analysis fails.

In this embodiment, during uplink scheduling, since the mac layer entity locks the uplink time-frequency resource related to the ue before receiving no successful parsing information sent by the physical layer entity, other ues cannot use the uplink time-frequency resource to send data to the base station, when a plurality of user equipments need to be scheduled in uplink, a large amount of uplink time-frequency resources will be locked, which is likely to cause the shortage of uplink time-frequency resources, therefore, when detecting that the occupancy rate of the current uplink time-frequency resource reaches a first threshold value, the media access control layer entity sends a first storage stopping instruction to the physical layer entity, when the physical layer entity receives the first storage stopping instruction, the instruction data sent by the media access control layer entity after sending the first storage stopping instruction is not stored, and the scheduling effect is prevented from being influenced by too much uplink time-frequency resource locking; it should be noted that, when the physical layer entity no longer stores the instruction data sent by the medium access control layer entity after sending the first stop storage instruction, if rescheduling is required subsequently, the process is performed according to the specification of the standard FAPI. When the medium access control layer entity detects that the occupancy rate of the current uplink time-frequency resource is lower than a second threshold value, the medium access control layer entity indicates that the current uplink resource is sufficient, and the current uplink resource can be directly retransmitted by the physical layer when retransmission is needed, so that a first storage instruction is sent to the physical layer entity, and after the physical layer entity receives the first storage instruction, the received indication data is stored, and uplink scheduling information is sent to the user equipment again when uplink data analysis fails.

In an optional implementation manner, the data transmission method provided in this embodiment further includes: and when the uplink data analysis fails, sending analysis failure information to the media access control layer entity so that the media access control layer entity keeps locking uplink time-frequency resources corresponding to the indication data. When the physical layer entity fails to analyze the uplink data, the physical layer entity sends analysis failure information to the media access control layer entity to inform the media access control layer entity that uplink scheduling is not successful, and uplink time-frequency resources corresponding to the locking indication data need to be kept, so that the media access control layer entity can avoid that the uplink time-frequency resources allocated to the user equipment are allocated to other user equipment to cause conflict.

In an alternative embodiment, the physical layer entity is a high physical layer entity. Specifically, the high physical layer entity may be a board, a chip, a circuit, and the like having a high physical layer related function, or may be a communication device such as a BBU having a high physical layer related function.

A second aspect of the embodiments of the present disclosure provides a data transmission device. Please refer to fig. 6 to fig. 7, wherein fig. 6 is a schematic structural diagram of a data transmission device according to a second aspect of the present disclosure, and fig. 7 is a schematic structural diagram of the second sending module 410 in fig. 6. The data transmission device provided by the embodiment of the disclosure is applied to a physical layer entity at a base station side, and includes:

an indication data obtaining module 110, configured to obtain indication data sent by a media access control layer entity, and store the indication data in a first memory; the indication data is related to the user equipment, and the indication data comprises uplink scheduling information;

a first sending module 210, configured to send uplink scheduling information to a user equipment;

a first receiving module 310, configured to receive and analyze uplink data that is correspondingly sent by the user equipment according to the uplink scheduling information;

a second sending module 410, configured to, when parsing the uplink data fails, obtain the indication data from the first memory, obtain uplink scheduling information according to the indication data, and send the uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again.

In an optional implementation manner, the indication data further includes first version modification rule information, the uplink scheduling information includes first redundancy version indication information, and the first version modification rule information is used to indicate a modification rule of the first redundancy version indication information in the uplink scheduling information; the first redundancy version indication information is used for indicating the redundancy version of the uplink data sent by the user equipment;

the second transmitting module 410 includes:

a first data obtaining unit 411, configured to obtain the indication data from the first memory when the uplink data analysis fails;

a first modifying unit 412, configured to modify, according to the first version modification rule information in the indication data, the first redundancy version indication information in the uplink scheduling information;

a first sending unit 413, configured to send the modified uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data corresponding to the redundancy version when receiving the modified uplink scheduling information again.

In an alternative embodiment, the apparatus further comprises:

and the first successful information sending module is used for sending the analysis success information to the media access control layer entity when the uplink data is successfully analyzed, so that the media access control layer entity releases the uplink time-frequency resource corresponding to the indication data.

In an alternative embodiment, the apparatus further comprises:

the indication data clearing module is used for clearing the indication data related to the user equipment in the first memory when the uplink data is successfully analyzed or a first data clearing instruction related to the user equipment is received; the first data clearing instruction is sent to the physical layer entity by the media access control layer entity when the resolving success information sent by the physical layer entity is not received within the first preset time after the indication data is sent.

In an alternative embodiment, the apparatus further comprises:

the first instruction detection module is used for detecting whether a first storage stopping instruction sent by a media access control layer entity is received or not; the first storage stopping instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current uplink time-frequency resource reaches a first threshold value;

the first storage stopping module is used for stopping storing the indication data received after the first storage stopping instruction when the first storage stopping instruction is received, and sending a result of analyzing the uplink data to the media access control layer entity, so that the media access control layer entity controls uplink scheduling according to the result of analyzing the uplink data until the first storage instruction is received; the first storage instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current uplink time-frequency resource is detected to be lower than a second threshold value; the first threshold is higher than the second threshold; the first storage instruction is used for indicating the physical layer entity to store the indication data and sending the uplink scheduling information to the user equipment again when the uplink data analysis fails.

It should be noted that the specific implementation manner and technical effect of the embodiment of the present disclosure are consistent with the implementation manner and technical effect of the embodiment of the data transmission method provided in the first aspect, and are not described herein again.

A third aspect of the embodiments of the present disclosure provides a data transmission method. Please refer to fig. 8 to fig. 10, wherein fig. 8 is a schematic flowchart of a data transmission method according to a third aspect of the present disclosure, fig. 9 is a schematic flowchart of step S420 in fig. 8, and fig. 10 is a schematic flowchart of a base station implementing downlink scheduling in the data transmission method according to the third aspect of the present disclosure. The data transmission method provided by the embodiment of the disclosure is applied to a physical layer entity at a base station side, and includes:

step S120, acquiring downlink data sent by a media access control layer entity, and storing the downlink data into a second memory; downlink data is related to user equipment, and the downlink data comprises downlink scheduling information and data information;

step S220, sending downlink scheduling information and data information to the user equipment;

step S320, receiving result feedback information sent by the user equipment; the result feedback information is used for indicating the result of the user equipment receiving the data information according to the downlink scheduling information;

step S420, when the result feedback information is the reception failure information, acquiring downlink data from the second memory, acquiring downlink scheduling information and data information according to the downlink data, and sending the downlink scheduling information and the data information to the user equipment again, so that the user equipment receives the data information again according to the downlink scheduling information.

It should be noted that the downlink scheduling information is used to indicate a downlink time-frequency resource for the base station to send data information to the user equipment.

In the embodiment of the disclosure, a physical layer entity of a base station is utilized to store downlink data sent by a media access control layer entity, where the downlink data includes downlink scheduling information and data information, and when the physical layer entity sends the downlink scheduling information to a user equipment and receives result feedback information sent by the user equipment as reception failure information, the physical layer entity can directly obtain the downlink scheduling information and the data information from the stored downlink data, and directly retransmit the downlink scheduling information and the data information without passing through the media access control layer entity, so that the user equipment receives the data information again according to the downlink scheduling information. By the method, the process from the physical layer to the media access control layer to the physical layer to the user equipment is not needed when the downlink scheduling fails, only the physical layer is needed, the step of retransmitting data for re-scheduling after the scheduling fails can be shortened, and the time of the retransmission process is further shortened. It should be noted that the downlink scheduling information is specifically DCI1, DCI1 is scheduling information sent by the base station to the user equipment, and is used to indicate that the base station should select a downlink time-frequency resource where data is sent when sending data to the user equipment, that is, indicate at which time and which subcarrier or subcarriers the base station should send data, when the user equipment receives DCI1 sent by the base station, the user equipment can know from DCI1 at which time and subcarrier or subcarriers the data information sent by the base station to the user equipment is or is not sent, and then the user equipment can obtain the data information sent by the base station to the user equipment on the time-frequency resource corresponding to DCI1, and when receiving the data information sent by the base station successfully, send receiving success information to the base station, so that the base station confirms that the data information is successfully received by the user equipment; when the user equipment fails to receive the data information sent by the base station, the user equipment sends the receiving failure information to the base station, so that the base station can know that the user equipment fails to receive the data information and resends the data information. Specifically, the ue sends an Acknowledgement (ACK) to the base station when receiving the data information sent by the base station successfully, and sends a Negative-Acknowledgement (NACK) to the base station when receiving the data information sent by the base station fails.

step S420 includes:

step S421, when the result feedback information is the reception failure information, acquiring the downlink data from the second memory;

step S422, according to the second version modification rule information in the downlink data, modifying the second redundancy version indication information in the downlink scheduling information and determining the data information of the corresponding redundancy version;

step S423, the modified downlink scheduling information and the data information corresponding to the redundancy version are sent to the user equipment again, so that the user equipment receives the data information corresponding to the redundancy version again according to the downlink scheduling information.

The Redundancy Version (RV) is designed to implement an incremental redundancy HARQ (Hybrid Automatic Retransmission Request) mechanism, that is, redundancy bits generated by an encoder are divided into a plurality of groups, each RV defines a transmission starting point, and different RVs are respectively used for first transmission and each HARQ Retransmission to implement gradual accumulation of the redundancy bits and complete incremental redundancy HARQ operation. In this embodiment, the physical layer entity of the base station modifies the second redundancy version indication information in the downlink scheduling information according to the second version modification rule information in the downlink data, and obtains the data information corresponding to the redundancy version according to the second version modification rule information in the downlink data, and then sends the modified downlink scheduling information and the data information corresponding to the redundancy version to the user equipment again, so that when the user equipment receives the modified uplink scheduling information sent again by the base station, the user equipment obtains the corresponding data information again according to the indication of the downlink scheduling information, and obtains the redundancy version of the currently received data information from the second redundancy version indication information. In specific implementation, the second version modification rule information may be defined as 1 or 0, and when the second version modification rule information is 1, the rule indicating the modification of the redundancy version is: 0 → 2 → 1 → 3, when the second version modification rule information is 0, the rule indicating the redundant version modification is: 0 → 3 → 2 → 1, which can be adjusted according to the actual situation, and is not limited herein. Further, when the second version modification rule information is 1, the rule indicating the redundancy version modification is: 0 → 2 → 1 → 3, if the second redundancy version indicator in the downlink scheduling information of the physical layer entity in the last scheduling is 0, and determining the data information with redundancy version of 0, and sending the downlink scheduling information with second redundancy version indication information of 0 and the data information with redundancy version of 0 to the user equipment, the user equipment obtaining the data information according to the downlink scheduling information and learning from the second redundancy version indication information that the redundancy version of the current data information is 0, and the second redundant version indication information in the downlink scheduling information is modified into 2 during the scheduling, and the data information with the redundant version 2 is determined, and sending the downlink scheduling information with the second redundancy version indication information of 2 and the data information with the redundancy version of 2 to the user equipment, receiving the data information by the user equipment according to the downlink scheduling information, and acquiring the redundancy version of the current data information of 2 from the second redundancy version indication information. The user equipment analyzes the data information according to the received data information of different redundancy versions. The method of analyzing and processing the same data after receiving different redundancy versions is common knowledge of those skilled in the art, and will not be described herein again.

In an optional implementation manner, the downlink scheduling information further includes downlink new data indication information, where the downlink new data indication information is used to indicate a relationship between the current downlink scheduling and the previous downlink scheduling. The data transmission method of the embodiment of the present disclosure further includes: and when the result feedback information is the reception failure information, modifying the downlink new data indication information in the downlink scheduling information. Specifically, the downlink New Data Indication information may be an NDI (New Data Indication), and when the value of the NDI in the current downlink scheduling is different from the value of the NDI in the previous downlink scheduling, that is, when 0 is changed to 1 or 1 is changed to 0, it indicates that the current downlink scheduling is rescheduling of the previous downlink scheduling, and when it is determined that the value of the NDI in the downlink scheduling information received twice has the above change, the user equipment learns that the Data information sent by the base station and the Data information sent in the previous scheduling are different redundancy versions of the same Data; when the NDI values of the downlink scheduling and the previous downlink scheduling are the same, namely 1 or 0, it indicates that the downlink scheduling and the previous downlink scheduling are not associated, and the ue determines that the data information received in the scheduling is new data information and is not associated with the data information received in the previous scheduling when determining that the NDI values of the downlink scheduling information received twice are the same.

and when the result feedback information is successful receiving information, transmitting the successful transmission information to the media access control layer entity so that the media access control layer entity releases downlink time-frequency resources corresponding to the downlink data.

In this embodiment, the medium access control layer entity allocates the downlink time-frequency resource, and after allocating the downlink time-frequency resource allocated by the downlink scheduling to the physical layer entity, locks the downlink time-frequency resource of the downlink scheduling, that is, when the downlink time-frequency resource is not released, the medium access control layer entity cannot allocate the part of the downlink time-frequency resource to other user equipment, so as to avoid the conflict of the downlink time-frequency resource.

and when the result feedback information is successful reception information or a second data clearing instruction related to the user equipment is received, clearing downlink data related to the user equipment in a second memory, wherein the second data clearing instruction is sent to the physical layer entity by the media access control layer entity when the transmission success information sent by the physical layer entity is not received in a second preset time after the uplink data is sent. The second memory in the physical layer entity in this embodiment is mainly used for storing the downlink data of the mac layer entity, and avoids notifying the mac layer entity again when downlink scheduling is required again, so that when the physical layer entity successfully parses the data information, it indicates that the scheduling is successful without downlink scheduling again, and thus downlink data related to the ue in the second memory can be cleared; or, when the physical layer entity receives a second data clearing instruction related to the user equipment, the physical layer entity indicates that the physical layer entity still cannot be successfully scheduled after rescheduling at a second preset time, and the physical layer entity clears the corresponding downlink data when the scheduling is considered to be failed. In an optional implementation manner, in order to further avoid a situation that the scheduling effect is affected by too much locking of the time-frequency resource, a second preset time is set, and in downlink scheduling, when the transmission success information sent by the physical layer entity is not received within the second preset time after the media access control layer entity module sends the downlink data to the physical layer entity, the downlink time-frequency resource corresponding to the downlink data is released.

detecting whether a second storage stopping instruction sent by a media access control layer entity is received; the second storage stopping instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current downlink time-frequency resource reaches a third threshold value;

when a second storage stopping instruction is received, stopping storing the downlink data received after the second storage stopping instruction, and sending the received result feedback information to the media access control layer entity, so that the media access control layer entity controls downlink scheduling according to the result feedback information until the second storage instruction is received; the second storage instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current downlink time-frequency resource is detected to be lower than a fourth threshold value; the third threshold is higher than the fourth threshold; and the second storage instruction is used for indicating the physical layer entity to store the downlink data and sending the downlink scheduling information and the data information to the user equipment again when the result feedback information is the reception failure information.

In this embodiment, during downlink scheduling, since the mac layer entity locks the downlink time-frequency resource related to the ue before receiving no transmission success information sent by the physical layer entity, so that other ues cannot receive the data transmitted by the base station through the downlink time-frequency resource, when a plurality of user equipments need to be scheduled in a downlink, a large amount of resources in the downlink time-frequency resources will be locked, which is likely to cause the shortage of the downlink time-frequency resources, therefore, the medium access control layer entity sends a second storage stopping instruction to the physical layer entity when detecting that the occupancy rate of the current downlink time-frequency resource reaches a third threshold value, when the physical layer entity receives the second storage stopping instruction, downlink data sent by the media access control layer entity after the second storage stopping instruction is sent is not stored, and the scheduling effect is prevented from being influenced by too much downlink time-frequency resource locking; it should be noted that, when the physical layer entity no longer stores the downlink data sent by the medium access control layer entity after sending the second stop storage instruction, if rescheduling is required subsequently, the process is performed according to the specification of the standard FAPI. When the medium access control layer entity detects that the occupancy rate of the current downlink time-frequency resource is lower than the fourth threshold, the medium access control layer entity indicates that the current downlink resource is sufficient, and the current downlink resource can be directly retransmitted by the physical layer when retransmission is needed, so that a second storage instruction is sent to the physical layer entity, the physical layer entity stores the received downlink data after receiving the second storage instruction, and sends downlink scheduling information and data information to the user equipment again when receiving result feedback information sent by the user equipment, wherein the result feedback information is reception failure information.

In an optional implementation manner, the data transmission method provided in this embodiment further includes: and when the result feedback information is the receiving failure information, sending analysis failure information to the media access control layer entity so that the media access control layer entity keeps locking downlink time-frequency resources corresponding to the downlink data. When receiving the result feedback information sent by the user equipment as the reception failure information, the physical layer entity sends the transmission failure information to the media access control layer entity to inform the media access control layer entity that the downlink scheduling is not successful, and downlink time-frequency resources corresponding to downlink data need to be kept locked, so as to avoid the conflict caused by the fact that the media access control layer entity allocates the downlink time-frequency resources allocated to the user equipment to other user equipment.

A fourth aspect of the embodiments of the present disclosure provides a data transmission device. Please refer to fig. 11 to fig. 12, wherein fig. 11 is a schematic structural diagram of a data transmission device according to a fourth aspect of the disclosure, and fig. 12 is a schematic structural diagram of a fourth sending module 420 in fig. 11. The data transmission device provided by the embodiment of the disclosure is applied to a physical layer entity at a base station side, and includes:

a downlink data obtaining module 120, configured to obtain downlink data sent by a mac layer entity, and store the downlink data in a second memory; downlink data is related to user equipment, and the downlink data comprises downlink scheduling information and data information;

a third sending module 220, configured to send downlink scheduling information and data information to the ue;

a second receiving module 320, configured to receive result feedback information sent by the user equipment; the result feedback information is used for indicating the result of the user equipment receiving the data information according to the downlink scheduling information;

a fourth sending module 420, configured to, when the result feedback information is reception failure information, obtain downlink data from the second memory, obtain downlink scheduling information and data information according to the downlink data, and send the downlink scheduling information and the data information to the user equipment again, so that the user equipment receives the data information according to the downlink scheduling information again.

a fourth sending module 420, comprising:

a second data obtaining unit 421, configured to obtain downlink data from the second memory when the result feedback information is reception failure information;

a second modifying unit 422, configured to modify, according to the second version modification rule information in the downlink data, the second redundancy version indication information in the downlink scheduling information and determine data information of a corresponding redundancy version;

a second sending unit 423, configured to send the modified downlink scheduling information and the data information corresponding to the redundancy version to the user equipment again, so that the user equipment receives the data information corresponding to the redundancy version according to the downlink scheduling information again.

In an alternative embodiment, the apparatus further comprises:

and the second success information sending module is used for sending the transmission success information to the media access control layer entity when the result feedback information is the reception success information, so that the media access control layer entity releases downlink time-frequency resources corresponding to the downlink data.

In an alternative embodiment, the apparatus further comprises:

and the downlink data clearing module is used for clearing downlink data related to the user equipment in the second memory when the result feedback information is successful reception information or a second data clearing instruction related to the user equipment is received, wherein the second data clearing instruction is sent to the physical layer entity when the medium access control layer entity does not receive successful transmission information sent by the physical layer entity within second preset time after the uplink data is sent.

In an alternative embodiment, the apparatus further comprises:

the second instruction detection module is used for detecting whether a second storage stopping instruction sent by the media access control layer entity is received or not; the second storage stopping instruction is sent to the physical layer entity by the media access control layer entity when the occupancy rate of the current downlink time-frequency resource reaches a third threshold value;

the second storage stopping module is used for stopping storing the downlink data received after the second storage stopping instruction when the second storage stopping instruction is received, and sending the received result feedback information to the media access control layer entity so that the media access control layer entity controls downlink scheduling according to the result feedback information until the second storage instruction is received; the second storage instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current downlink time-frequency resource is lower than a fourth threshold value; the third threshold is higher than the fourth threshold; and the second storage instruction is used for indicating the physical layer entity to store the downlink data and sending the downlink scheduling information and the data information to the user equipment again when the result feedback information is the reception failure information.

It should be noted that the specific implementation manner and technical effect of the embodiment of the present disclosure are consistent with the implementation manner and technical effect of the embodiment of the data transmission method provided in the third aspect, and are not described herein again.

A fifth aspect of the embodiments of the present disclosure provides a physical layer entity on a base station side. Referring to fig. 13, fig. 13 is a schematic structural diagram of a physical layer entity according to a fifth aspect of the present disclosure. The physical layer entity proposed in the embodiment of the present disclosure includes a first processor 510, a first memory 610, a third memory 710, and a first communication bus 810, where the first processor 510, the first memory 610, and the third memory 710 complete mutual communication through the first communication bus 810;

the first memory 610 is used for storing indication data sent by a medium access control layer entity;

the third memory 710 is used for storing computer programs;

the first processor 510 is configured to implement the steps of the data transmission method according to the first aspect when executing the program stored in the third memory 710.

The first communication bus 810 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The first communication bus 810 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 5, but this is not intended to represent only one bus or type of bus.

The first Memory 610 or the third Memory 710 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the first memory 610 or the third memory 710 may also be a storage device located remotely from the first processor 510.

The first Processor 510 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc., and may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.

A sixth aspect of the embodiments of the present disclosure provides a communication device on a base station side. Referring to fig. 14, fig. 14 is a schematic structural diagram of a communication device according to a sixth aspect of the present disclosure. The communication device provided by the embodiment of the present disclosure includes a medium access control layer entity and a physical layer entity as in the fifth aspect, where the medium access control layer entity is configured to send indication data to the physical layer entity.

In an optional implementation manner, the mac layer entity module is further configured to detect an occupancy rate of the current uplink time-frequency resource before sending the indication data to the physical entity, and send a first storage stop instruction to the physical layer entity when detecting that the occupancy rate of the current uplink time-frequency resource reaches a first threshold, so that the physical layer entity does not store the indication data when receiving the storage stop instruction.

In an optional implementation manner, when detecting that the occupancy rate of the current uplink time-frequency resource is lower than a second threshold, the mac layer entity module sends a first storage instruction to the physical layer entity, so that the physical layer entity stores the received indication data when receiving the first storage instruction and sends uplink scheduling information to the user equipment again when the uplink data analysis fails.

In an optional implementation manner, the mac layer entity module is further configured to release the uplink time-frequency resource corresponding to the indication data when the analysis success information sent by the physical layer entity is not received within a first preset time after the indication data is sent to the physical layer entity.

A seventh aspect of the embodiments of the present disclosure provides a physical layer entity on a base station side. Referring to fig. 15, fig. 15 is a schematic structural diagram of a physical layer entity according to a seventh aspect of the present disclosure. The physical layer entity provided by the embodiment of the present disclosure includes a second processor 520, a second memory 620, a fourth memory 720 and a second communication bus 820, wherein the second processor 520, the second memory 620 and the fourth memory 720 complete communication with each other through the second communication bus 820;

the second memory 620 is configured to store downlink data sent by a mac layer entity;

the fourth memory 720 is used for storing computer programs;

the second processor 520 is configured to implement the steps of the data transmission method according to the third aspect when executing the program stored in the fourth memory 720.

The second communication bus 820 mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The second communication bus 820 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 5, but this is not intended to represent only one bus or type of bus.

The second Memory 620 or the fourth Memory 720 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the second memory 620 or the fourth memory 720 may also be a storage device located remotely from the aforementioned second processor 520.

The second Processor 520 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc., and may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.

An eighth aspect of the embodiments of the present disclosure provides a communication device on a base station side. Referring to fig. 16, fig. 16 is a schematic structural diagram of a communication device according to an eighth aspect of the present disclosure. The communication device provided in the embodiment of the present disclosure includes a medium access control layer entity and a physical layer entity as in the seventh aspect, where the medium access control layer entity is configured to send downlink data to the physical layer entity.

In an optional implementation manner, the mac layer entity module is further configured to detect an occupancy rate of a current downlink time-frequency resource before sending downlink data to the physical entity, and send a second storage stop instruction to the physical layer entity when detecting that the occupancy rate of the current downlink time-frequency resource reaches a third threshold, so that the physical layer entity does not store the downlink data when receiving the storage stop instruction.

In an optional implementation manner, the mac layer entity module is further configured to send a second storage instruction to the physical layer entity when detecting that the occupancy rate of the current downlink time-frequency resource is lower than a fourth threshold, so that the physical layer entity stores the received downlink data and sends the downlink scheduling information and the data information to the user equipment again when receiving the result feedback information sent by the user equipment and being the reception failure information.

In an optional implementation manner, the mac layer entity module is further configured to release the downlink time-frequency resource corresponding to the indication data when the transmission success information sent by the physical layer entity is not received within a second preset time after the uplink data is sent to the physical layer entity.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer instructions, when loaded and executed on a computer, cause the processes or functions according to the embodiments of the application to be performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes, etc.), optical media (e.g., DVDs), or semiconductor media (e.g., solid state disks), among others.

It should be noted that, for the embodiments of the apparatus, the communication device, and the computer-readable storage medium, since they are basically similar to the method embodiments, reference may be made to part of the description of the corresponding method embodiments for relevant points, and details will not be described again.

According to the technical scheme, the beneficial effects of the embodiment of the disclosure are as follows: the embodiment of the disclosure provides a data transmission method, a data transmission device, a communication device and a computer-readable storage medium, wherein the method is applied to a physical layer entity of a base station and comprises the following steps: acquiring and storing indication data sent by a media access control layer entity during uplink scheduling; the indication data is related to the user equipment, the indication data comprises uplink scheduling information, and the uplink scheduling information is used for indicating uplink time-frequency resources of the user equipment; sending uplink scheduling information to user equipment; receiving uplink data sent by user equipment according to the uplink scheduling information; when the uplink data analysis fails, acquiring the indication data from the memory, and sending the uplink scheduling information to the user equipment again so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again; acquiring and storing downlink data transmitted by a media access control layer entity during downlink scheduling; the downlink data is related to the user equipment, the downlink data comprises downlink scheduling information and data information, and the downlink scheduling information is used for indicating downlink time-frequency resources for the base station to send the data information to the user equipment; sending downlink scheduling information and data information to user equipment; receiving result feedback information sent by user equipment; the result feedback information is used for indicating the result of the user equipment receiving the data information according to the downlink scheduling information; and when the result feedback information is reception failure information, acquiring the downlink scheduling information and the data information from the memory, and sending the downlink scheduling information and the data information to the user equipment again so that the user equipment receives the data information again according to the downlink scheduling information. According to the technical scheme, when the re-scheduling is needed, the physical layer entity is only required to issue the stored indication data or downlink data to the user equipment again, the process from the PHY layer to the MAC layer to the PHY layer to the UE is not required, the step of re-transmitting the data to re-schedule after the scheduling failure can be shortened, and the time of the re-transmitting process is further shortened.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A data transmission method is applied to a physical layer entity at a base station side, and comprises the following steps:

acquiring indication data sent by a media access control layer entity, and storing the indication data into a first memory; the indication data is related to user equipment, and the indication data comprises uplink scheduling information;

sending the uplink scheduling information to the user equipment;

2. The data transmission method according to claim 1, wherein the indication data further includes first version modification rule information, the uplink scheduling information includes first redundancy version indication information, and the first version modification rule information is used for indicating a modification rule of the first redundancy version indication information in the uplink scheduling information; the first redundancy version indication information is used for indicating a redundancy version of the uplink data sent by the user equipment;

3. The data transmission method according to claim 1, wherein the method further comprises:

4. The data transmission method of claim 3, further comprising:

5. The data transmission method according to any one of claims 1 to 4, characterized in that the method further comprises:

6. A data transmission apparatus, wherein the physical layer entity applied to a base station side includes:

and a second sending module, configured to, when the uplink data is unsuccessfully analyzed, obtain the indication data from the first memory, obtain the uplink scheduling information according to the indication data, and send the uplink scheduling information to the user equipment again, so that the user equipment retransmits the uplink data when receiving the uplink scheduling information again.

7. A data transmission method is applied to a physical layer entity at a base station side, and comprises the following steps:

and when the result feedback information is reception failure information, acquiring the downlink data from the second memory, acquiring the downlink scheduling information and the data information according to the downlink data, and sending the downlink scheduling information and the data information to the user equipment again so that the user equipment receives the data information according to the downlink scheduling information again.

8. The data transmission method according to claim 7, wherein the downlink data further includes second version modification rule information, the downlink scheduling information includes second redundancy version indication information, and the second version modification rule information is used to indicate a modification rule of the second redundancy version indication information in the downlink scheduling information; the second redundancy version indication information is used for indicating the redundancy version of the data information;

and sending the modified downlink scheduling information and the data information corresponding to the redundancy version to the user equipment again, so that the user equipment receives the data information corresponding to the redundancy version again according to the downlink scheduling information.

9. The data transmission method of claim 7, further comprising:

10. The method of claim 9, further comprising:

and when the result feedback information is successful reception information or a second data clearing instruction related to the user equipment is received, clearing the downlink data related to the user equipment in the second memory, wherein the second data clearing instruction is sent to the physical layer entity by the MAC layer entity when the successful transmission information sent by the physical layer entity is not received within a second preset time after the uplink data is sent.

11. The data transmission method according to any one of claims 7 to 10, characterized in that the method further comprises:

when receiving the second storage stopping instruction, stopping storing the downlink data received after the second storage stopping instruction, and sending the received result feedback information to the media access control layer entity, so that the media access control layer entity controls downlink scheduling according to the result feedback information until receiving the second storage instruction; the second storage instruction is sent to the physical layer entity by the media access control layer entity when detecting that the occupancy rate of the current downlink time-frequency resource is lower than a fourth threshold value; the third threshold is higher than the fourth threshold; and the second storage instruction is used for indicating the physical layer entity to store downlink data and sending the downlink scheduling information and the data information to the user equipment again when the result feedback information is reception failure information.

12. A data transmission apparatus, wherein the physical layer entity applied to a base station side includes:

a second receiving module, configured to receive result feedback information sent by the user equipment; the result feedback information is used for indicating the user equipment to receive the result of the data information according to the downlink scheduling information;

13. A physical layer entity at a base station side is characterized by comprising a first processor, a first memory, a third memory and a first communication bus, wherein the first processor, the first memory and the third memory complete mutual communication through the first communication bus;

the third memory is used for storing computer programs;

the first processor, when executing the program stored in the third memory, is configured to perform the method steps of any of claims 1 to 5.

14. A communication device at a base station side, comprising a medium access control layer entity and the physical layer entity of claim 13, wherein the medium access control layer entity is configured to send the indication data to the physical layer entity.

15. The physical layer entity at the base station side is characterized by comprising a second processor, a second memory, a fourth memory and a second communication bus, wherein the second processor, the second memory and the fourth memory complete mutual communication through the second communication bus;

the fourth memory is used for storing computer programs;

the second processor, when executing the program stored in the fourth memory, is configured to perform the method steps of any of claims 7 to 11.

16. A communication device at a base station side, comprising a medium access control layer entity and the physical layer entity of claim 15, wherein the medium access control layer entity is configured to send the downlink data to the physical layer entity.

17. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements the steps of the data transmission method according to any one of claims 1 to 5 or the steps of the data transmission method according to any one of claims 7 to 11.