CN111148251B

CN111148251B - Data transmission method, device, computer equipment and storage medium

Info

Publication number: CN111148251B
Application number: CN201911359392.XA
Authority: CN
Inventors: 杨碧伟; 孔令龙; 冯芳; 吴伟锋
Original assignee: Comba Network Systems Co Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2023-07-07
Anticipated expiration: 2039-12-25
Also published as: CN111148251A

Abstract

The application relates to a data transmission method, a data transmission device, computer equipment and a storage medium. The method comprises the following steps: issuing first downlink control information and second downlink control information in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; and receiving the first uplink shared channel data sent by the user equipment in the first uplink subframe and the second uplink shared channel data sent by the user equipment in the second uplink subframe. Compared with the traditional data transmission method, the method has the advantages that two uplink subframes are simultaneously called by issuing one DCI0, one of the uplink subframes can be effectively called under the condition that the DCI0 is virtually detected or missed detection occurs, the utilization rate of uplink subframe resources is improved, and meanwhile the data transmission rate is also improved.

Description

Data transmission method, device, computer equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a data transmission method, apparatus, computer device, and storage medium.

Background

In a time division duplex (Time Division Duplexing, TDD) wireless communication system supported by long term evolution (Long Term Evolution, LTE) technology, 7 different asymmetric uplink and downlink configurations can be provided. The uplink and downlink configurations can provide 40% -90% of downlink subframes, and have flexible service adaptation characteristics.

For the Uplink and downlink configuration 0 (TDD Uplink-downlink configuration 0), TDD0 is abbreviated, there are 4 downlink subframes (including 2 special subframes) in one system frame, and 6 subframes in the Uplink subframe, where the number of downlink subframes is less than the number of Uplink subframes. In order to reasonably utilize the uplink subframe number, the 3GPP protocol proposes to use one downlink subframe to issue downlink control information format 0 (format 0of Downlink Control Information, DCI0 for short) to invoke one or two uplink subframes.

In the traditional technology, due to the transmission environment or equipment problem, the conditions of false detection or missed detection of DCI0 often occur, and if the missed detection of DCI0 is used for calling two uplink subframes, the scheduling of two continuous uplink subframes can be influenced, so that the waste of uplink resources is caused, and the uplink rate is influenced.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a data transmission method, apparatus, computer device, and storage medium with high uplink resource utilization and high transmission rate.

In a first aspect, an embodiment of the present invention provides a data transmission method, where the method includes:

issuing first downlink control information and second downlink control information in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe;

and receiving first uplink shared channel data sent by the user equipment in the first uplink subframe and second uplink shared channel data sent by the user equipment in the second uplink subframe.

In one embodiment of the present application, the first downlink control information includes a first uplink index field, where high and low bits of the first uplink index field are used to indicate scheduling of the first uplink subframe; the second downlink control information includes a second uplink index field, where high and low bits of the second uplink index field are used to indicate scheduling of the second uplink subframe.

In one embodiment of the present application, the high-order bits of the first uplink index field are a first value, and the low-order bits are a second value; the upper bits of the second downlink control information are the second value, and the lower bits are the first value.

In one embodiment of the present application, the method further comprises:

determining the first uplink subframe according to the first downlink control information and the subframe number of the first special subframe;

and determining the second uplink subframe according to the second downlink control information and the subframe number of the first special subframe.

In an embodiment of the present application, the determining the first uplink subframe according to the first downlink control information and the subframe number of the first special subframe includes:

acquiring a first subframe time delay corresponding to the first downlink control information, and determining the first uplink subframe according to the first subframe time delay and a subframe number of the first special subframe;

acquiring a second subframe time delay corresponding to the second downlink control information, and determining the second uplink subframe according to the second subframe time delay and the subframe number of the first special subframe;

in one embodiment of the present application, the method further comprises:

checking the first uplink shared channel data to obtain a first checking result, and checking the second uplink shared channel data to obtain a second checking result;

According to the first check result and the second check result, corresponding downlink control information is issued in a second special subframe; the second special subframe is a special subframe corresponding to the first special subframe in the next system frame.

In an embodiment of the present application, the issuing, according to the first check result and the second check result, corresponding downlink control information in a second special subframe includes:

if the first check result is successful and the second check result is failed, third downlink control information is issued in the second special subframe; the third downlink control information is used for scheduling a third uplink subframe to newly transmit uplink shared channel data; the third uplink subframe is an uplink subframe corresponding to the first uplink subframe in the next system frame;

if the first check result is failure and the second check result is success, fourth downlink control information is issued in the second special subframe; the fourth downlink control information is used for scheduling a fourth uplink subframe to newly transmit uplink shared channel data; the fourth uplink subframe is an uplink subframe corresponding to the second uplink subframe in the next system frame;

If the first check result is successful and the second check result is successful, the third downlink control information and the fourth downlink control information are issued in the second special subframe;

and if the first check result is failure and the second check result is failure, stopping transmitting downlink control information in the second special subframe.

In an embodiment of the present application, the third downlink control information is generated by flipping an NDI field in the first downlink control information; and the fourth downlink control information is generated by overturning an NDI field in the second downlink control information.

In a second aspect, an embodiment of the present invention provides a data transmission method, where the method includes:

receiving first downlink control information and second downlink control information issued by a base station in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe;

and transmitting first uplink shared channel data in the first uplink subframe, and transmitting second uplink shared channel data in the second uplink subframe.

In one embodiment of the present application, the method further comprises:

and acquiring second subframe time delay corresponding to the second downlink control information, and determining the second uplink subframe according to the second subframe time delay and the subframe number of the first special subframe.

In one embodiment of the present application, the method further comprises:

receiving downlink control information corresponding to a first check result and a second check result, which is issued by the base station, in a second special subframe; the first check result is generated by the base station for checking the first uplink shared channel data, and the second check result is generated by the base station for checking the second uplink shared channel data;

and scheduling the corresponding uplink sub-frame according to the downlink control information corresponding to the first check result and the second check result.

In an embodiment of the present application, the scheduling the corresponding uplink subframe according to the downlink control information corresponding to the first check result and the second check result includes:

if the first check result is successful and the second check result is failed, receiving third downlink control information in the second special subframe; scheduling a third uplink subframe to newly transmit uplink shared channel data according to the third downlink control information; the third uplink subframe is an uplink subframe corresponding to the first uplink subframe in the next system frame;

if the first check result is failure and the second check result is success, fourth downlink control information is received in the second special subframe; scheduling a fourth uplink subframe to newly transmit uplink shared channel data according to the fourth downlink control information; the fourth uplink subframe is an uplink subframe corresponding to the second uplink subframe in the next system frame;

If the first check result is successful and the second check result is successful, receiving the third downlink control information and the fourth downlink control information in the second special subframe; scheduling the new uplink shared channel data of the third uplink subframe according to the third downlink control information; and scheduling the new uplink shared channel data of the fourth uplink subframe according to the fourth downlink control information.

In a third aspect, an embodiment of the present invention provides a base station, including:

the control information generation module is used for issuing first downlink control information and second downlink control information in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe;

and the transmission module is used for receiving the first uplink shared channel data sent by the user equipment in the first uplink subframe and the second uplink shared channel data sent by the user equipment in the second uplink subframe.

In a fourth aspect, an embodiment of the present invention provides a user equipment, where the base station includes:

the control information receiving module is used for receiving first downlink control information and second downlink control information issued by the base station in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe;

and the transmission module is used for transmitting the first uplink shared channel data in the first uplink subframe and transmitting the second uplink shared channel data in the second uplink subframe.

In a fifth aspect, an embodiment of the present invention provides a computer device, including a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In a sixth aspect, an embodiment of the present invention provides a computer device, including a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In a seventh aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

In an eighth aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

The data transmission method, the data transmission device, the computer equipment and the storage medium send down the first downlink control information and the second downlink control information in the first special subframe in the uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; and receiving the first uplink shared channel data sent by the user equipment in the first uplink subframe and the second uplink shared channel data sent by the user equipment in the second uplink subframe. According to the method provided by the embodiment, as the first downlink control information and the second downlink control information are issued in the special subframes at the same time to respectively call different uplink subframes, compared with the traditional data transmission method, two uplink subframes are called through one DCI0 at the same time, and under the condition that the DCI0 is subjected to false detection or missing detection, one of the uplink subframes can be effectively called, so that the utilization rate of uplink subframe resources is improved, and meanwhile, the data transmission rate is also improved.

Drawings

Fig. 1 is an environmental diagram of an implementation of a data transmission method according to an embodiment of the present application;

fig. 2 is a flowchart of a data transmission method according to an embodiment of the present application;

fig. 3 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 4a is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 4b is a schematic diagram of uplink subframe scheduling provided in the embodiment of the present application;

fig. 5 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 6 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 7 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 8 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 9 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 10 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 11 is a block diagram of a base station according to an embodiment of the present application;

fig. 12 is a block diagram of a user equipment according to an embodiment of the present application;

fig. 13 is a block diagram of a computer device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The data transmission method provided by the application can be applied to an application environment shown in fig. 1. Wherein a base station (Node B, NB) 102 communicates with a User Equipment (UE) 104. The user device 104 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices, among others.

Referring to fig. 2, a data transmission method provided in this embodiment is illustrated by taking the application of the method to the base station 102 in fig. 1 as an example, and includes the following steps:

step 202, first downlink control information and second downlink control information are issued in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe.

In an embodiment of the present application, in a TDD wireless communication system supported by LTE technology, 7 uplink and downlink subframe configurations are supported altogether from TDD0 to TDD6, and for uplink and downlink configuration 0 (TDD 0), the corresponding subframe structure is shown in the following table:

One system frame of TDD0 is DSUUUDSUUU, where "D" corresponds to one downlink subframe, "U" corresponds to one uplink subframe, and "S" corresponds to one special subframe. Corresponding to the special subframes, subframes corresponding to "D" and "U" are referred to as normal subframes. As can be seen, TDD0 includes two special subframes, special subframe 1 and special subframe 6, within one system frame.

In one embodiment of the present application, in the physical downlink control channel PDCCH (Physical Downlink Control Channel), the base station issues two downlink control information formats 0 and dci0 (formats 0 and of Downlink Control Information) in the special subframe 1 to schedule two different uplink subframes respectively. That is, the base station simultaneously issues first downlink control information and second downlink control information in the special subframe 1, where the first control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe, and the first uplink subframe is different from the second uplink subframe. Similarly, in special subframe 6, the base station also transmits two different downlink control information for scheduling two different uplink subframes.

Step 204, receiving first uplink shared channel data sent by the ue in the first uplink subframe and second uplink shared channel data sent by the ue in the second uplink subframe.

In one embodiment of the present application, if the ue receives the first downlink control information and the second downlink control information sent by the base station, the ue will send the first uplink shared channel data in a first uplink subframe called by the first downlink control information, and the ue will send the second uplink shared channel data in a second uplink subframe called by the second downlink control information. Correspondingly, the base station receives the first uplink shared channel data sent by the user equipment in the first uplink subframe, and receives the second uplink shared channel data sent by the user equipment in the second uplink subframe.

In the data transmission method provided by the embodiment of the application, the first downlink control information and the second downlink control information are issued in the first special subframe in the uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; and receiving the first uplink shared channel data sent by the user equipment in the first uplink subframe and the second uplink shared channel data sent by the user equipment in the second uplink subframe. According to the method provided by the embodiment, as the first downlink control information and the second downlink control information are issued in the special subframes at the same time to respectively call different uplink subframes, compared with the traditional data transmission method, two uplink subframes are called through one DCI0 at the same time, and under the condition that the DCI0 is subjected to false detection or missing detection, one of the uplink subframes can be effectively called, so that the utilization rate of uplink subframe resources is improved, and meanwhile, the data transmission rate is also improved.

The other data transmission method provided in this embodiment may be applied to the base station 102 in the implementation environment described above. On the basis of the embodiment shown in fig. 2, the first downlink control information includes a first uplink index field, where high and low bits of the first uplink index field are used to indicate scheduling of the first uplink subframe; the second downlink control information includes a second uplink index field, and high and low bits of the second uplink index field are used to indicate scheduling of the second uplink subframe.

In one embodiment of the present application, the upper bits of the first uplink index field are a first value and the lower bits are a second value; the upper bits of the second downlink control information are the second value and the lower bits are the first value. Alternatively, the first value may be set to 0 and the corresponding second value may be set to 1; alternatively, the first value may be set to a default value and the corresponding second value may be set to a non-default value; alternatively, the first value may be set to wire and the corresponding second value may be set to false.

In a specific embodiment, the uplink index field may be an UL index field in the downlink control information, where the field includes two bits, and for the first downlink control information, the high bit may be set to 1 and the low bit may be set to 0; for the second downlink control information, it may be set to have the high bit of 0 and the low bit of 1.

Referring to fig. 3, a flowchart of another data transmission method according to the present embodiment is shown, and the data transmission method may be applied to the base station 102 in the implementation environment described above. On the basis of the embodiment shown in fig. 2, the method further comprises the following steps:

step 302, determining a first uplink subframe according to the first downlink control information and the subframe number of the first special subframe.

Step 304, determining a second uplink subframe according to the second downlink control information and the subframe number of the first special subframe.

In an embodiment of the present application, if the UL index field in the first downlink control information is set to 10 and the corresponding UL index field in the second downlink control information is set to 01, at this time, the subframe number of the first uplink subframe may be determined according to the subframe number of the first special subframe and the first downlink control information, or the subframe number of the second uplink subframe may be determined according to the subframe number of the first special subframe and the second downlink control information.

Specifically, referring to the flowchart of another data transmission method provided in this embodiment shown in fig. 4a, the method includes:

step 402, a first subframe delay corresponding to the first downlink control information is obtained, and a first uplink subframe is determined according to the first subframe delay and a subframe number of the first special subframe.

Step 404, a second subframe time delay corresponding to the second downlink control information is obtained, and a second uplink subframe is determined according to the second subframe time delay and the subframe number of the first special subframe.

In an embodiment of the present application, if the UL index field in the first downlink control information is set to 10, the first subframe delay corresponding to the first downlink control information is six, and the subframe number of the first uplink subframe corresponding to the first downlink control information can be determined according to the subframe number of the first special subframe and the first subframe delay.

In an embodiment of the present application, if the UL index field in the second downlink control information is set to 01, the second subframe delay corresponding to the second downlink control information is seven, and according to the subframe number of the first special subframe and the second subframe delay, the subframe number of the second uplink subframe corresponding to the second downlink control information can be determined.

For example, referring to the uplink subframe scheduling schematic shown in fig. 4b, when the subframe number of the first special subframe is one, the first subframe delay corresponding to the first downlink control information is six, and the subframe number of the first uplink subframe corresponding to the first downlink control information is seven, that is, the uplink subframe with the number of seven in the system frame is scheduled; when the subframe number of the first special subframe is one, the second subframe time delay corresponding to the second downlink control information is seven, and the subframe number of the second uplink subframe corresponding to the second downlink control information is eight, namely, the uplink subframe with the number of eight in the system frame is scheduled; when the subframe number of the first special subframe is six, the first subframe time delay corresponding to the first downlink control information is six, and the subframe number of the first uplink subframe corresponding to the first downlink control information is two, namely, the uplink subframe with the number of two in the next system frame is scheduled; when the subframe number of the first special subframe is six, the second subframe time delay corresponding to the second downlink control information is seven, and the subframe number of the second uplink subframe corresponding to the second downlink control information is three, namely, the uplink subframe with the number of three in the next system frame is scheduled.

In the data transmission method provided by the embodiment of the application, the first uplink subframe is determined according to the first downlink control information and the subframe number of the first special subframe; and determining a second uplink subframe according to the second downlink control information and the subframe number of the first special subframe. According to the data transmission method provided by the embodiment of the application, the base station can acquire the uplink subframes corresponding to the first downlink control information and the second downlink control information because the first downlink control information and the second downlink control information are used for determining different first uplink subframes and second uplink subframes, so that the data transmission efficiency is ensured.

After the base station receives the uplink shared channel data uploaded by the user equipment, the base station also needs to check the uplink shared channel data, and indicates the user equipment to newly upload or retransmit the uplink shared channel data according to a check result. Therefore, please refer to fig. 5, which illustrates a flowchart of another data transmission method provided in the present embodiment, the data transmission method may be applied to the base station 102 in the implementation environment described above. On the basis of the embodiment shown in fig. 2, the method may further include the following steps:

step 502, the first uplink shared channel data is checked to obtain a first check result, and the second uplink shared channel data is checked to obtain a second check result.

In one embodiment of the present application, when receiving first uplink shared channel data and second uplink shared channel data sent by a user equipment, a base station checks the first uplink shared channel data and the second uplink shared channel data, and obtains a first check result corresponding to the first uplink shared channel data and a second check result corresponding to the second uplink shared channel data. Specifically, the base station performs CRC check on the received uplink shared channel data to determine whether retransmission is required. If the CRC check is successful and the user equipment also has uplink data transmission, carrying out new transmission; if the CRC check fails, retransmission is performed.

Step 504, according to the first check result and the second check result, corresponding downlink control information is issued in the second special subframe; the second special subframe is a special subframe corresponding to the first special subframe in the next system frame.

In an embodiment of the present application, the second special subframe is a special subframe corresponding to the first special subframe in the next system frame. For example, if the first special subframe is the special subframe 1 of the current system frame, the second special subframe is the special subframe 1 in the next system frame relative to the current system frame; if the first special subframe is the special subframe 6 of the current system frame, the second special subframe is the special subframe 6 in the next system frame relative to the current system frame.

In an embodiment of the present application, the base station may determine whether a check result of successful check exists in the first check result and the second check result, and if so, may issue corresponding downlink control information in the second special subframe, so that the new transmission check result of the ue is successful uplink shared channel data.

In the data transmission method provided by the embodiment of the application, a first check result is obtained by checking the first uplink shared channel data, and a second check result is obtained by checking the second uplink shared channel data; according to the first check result and the second check result, corresponding downlink control information is issued in the second special subframe; the second special subframe is a special subframe corresponding to the first special subframe in the next system frame. According to the data transmission method provided by the embodiment of the application, by respectively acquiring the first check result corresponding to the first uplink shared channel data and the second check result corresponding to the second uplink shared channel data, corresponding downlink control information can be issued aiming at the uplink shared channel data with successful check so as to enable the user equipment to newly transmit the uplink shared channel data.

Referring to fig. 6, a flowchart of another data transmission method according to the present embodiment is shown, and the data transmission method may be applied to the base station 102 in the implementation environment described above. Based on the embodiment shown in fig. 5, the step 504 may specifically include the following steps:

step 602, if the first test result is successful and the second test result is failed, issuing third downlink control information in the second special subframe; the third downlink control information is used for scheduling the new uplink shared channel data of the third uplink subframe; the third uplink subframe is an uplink subframe corresponding to the next system frame in the first uplink subframe.

In an embodiment of the present application, when a first check result of the first uplink shared channel data is successful and a second check result of the second uplink shared channel data is failed, the base station may send third downlink control information in the second special subframe in response to the first check result, so that the user equipment may continue to newly transmit the uplink shared channel data in the third uplink subframe. The third uplink subframe is an uplink subframe corresponding to the first uplink subframe in the next system frame. And for the second check result, the base station can issue NACK in the corresponding downlink subframe according to the LTE protocol so as to instruct the user equipment to retransmit the second uplink shared channel data in a non-adaptive retransmission mode.

Step 604, if the first test result is failure and the second test result is success, issuing fourth downlink control information in the second special subframe; the fourth downlink control information is used for scheduling the new uplink shared channel data of the fourth uplink subframe; the fourth uplink subframe is an uplink subframe corresponding to the second uplink subframe in the next system frame.

In an embodiment of the present application, when the second check result of the second uplink shared channel data is successful and the first check result of the first uplink shared channel data is failed, the base station may respond to the second check result and issue fourth downlink control information in the second special subframe, so that the user equipment may continue to newly transmit the uplink shared channel data in the fourth uplink subframe. The fourth uplink subframe is an uplink subframe corresponding to the second uplink subframe in the next system frame. For the first check result, the base station may issue NACK in the corresponding downlink subframe according to the LTE protocol, so as to instruct the ue to retransmit the first uplink shared channel data in a non-adaptive retransmission manner.

Step 606, if the first test result is successful and the second test result is successful, the third downlink control information and the fourth downlink control information are issued in the second special subframe.

In an embodiment of the present application, when a first check result of the first uplink shared channel data is successful and a second check result of the second uplink shared channel data is also successful, the base station may send third downlink control information in the second special subframe in response to the first check result, so that the user equipment may continue to newly transmit the uplink shared channel data in the third uplink subframe. Meanwhile, the base station responds to the second check result and issues fourth downlink control information in the second special subframe, so that the user equipment can continue to newly transmit uplink shared channel data in the fourth uplink subframe.

In step 608, if the first test result is failure and the second test result is failure, the downlink control information is stopped to be sent in the second special subframe.

In one embodiment of the present application, when the first check result of the first uplink shared channel data is failure and the second check result of the second uplink shared channel data is also failure, the base station does not issue any downlink control information in the second special subframe. Meanwhile, for the first check result and the second check result, the base station will issue NACK in the corresponding downlink subframe according to the LTE protocol, so as to instruct the user equipment to retransmit the first uplink shared channel data and the second uplink shared channel data in a non-adaptive retransmission mode.

In an embodiment of the present application, the third downlink control information is generated by flipping an NDI field in the first downlink control information; the fourth downlink control information is generated by turning over the NDI field in the second downlink control information.

Specifically, the NDI (New Data Indicator) field occupies 1 bit in the downlink control information, if uplink shared channel data needs to be newly transmitted, the third downlink control information sent by the base station in the second special subframe is the same as the first uplink index field of the first downlink control information, and the NDI field is opposite to the NDI field, for example, when the NDI field of the first downlink control information is set to 0, the NDI field of the third downlink control information is set to 1. Similarly, the fourth downlink control information sent by the base station in the second special subframe is the same as the second uplink index field of the second downlink control information, and the NDI field is opposite.

According to the data transmission method provided by the embodiment of the application, by acquiring the first check result of the first uplink shared channel data and the second check result of the second uplink shared channel data, downlink control information is issued in the second special subframes according to the check result of each uplink shared channel data, so that the corresponding uplink subframes can be scheduled to carry out new transmission on the uplink shared channel data in time under the condition that the check is successful, and the data transmission rate under the condition that the downlink control information is missed or virtually detected due to poor transmission environment is improved.

Referring to fig. 7, a flowchart of another data transmission method according to the present embodiment is shown, and the data transmission method may be applied to the ue 104 in the implementation environment described above. The method comprises the following steps:

step 702, receiving first downlink control information and second downlink control information issued by a base station in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe.

In one embodiment of the present application, in the physical downlink control channel PDCCH (Physical Downlink Control Channel), the base station issues two downlink control information formats 0 and dci0 (formats 0 and of Downlink Control Information) in the special subframe 1 to schedule two different uplink subframes respectively. That is, the ue may receive the first downlink control information and the second downlink control information sent by the base station in the special subframe 1, where the first control information is used to schedule the first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe, and the first uplink subframe is different from the second uplink subframe. Similarly, in the special subframe 6, the ue may also receive two different downlink control information sent by the base station in the special subframe 6 at the same time, so as to schedule two different uplink subframes.

Step 704, the first uplink shared channel data is sent in the first uplink subframe, and the second uplink shared channel data is sent in the second uplink subframe.

In one embodiment of the present application, if the ue receives the first downlink control information and the second downlink control information sent by the base station, the ue will send the first uplink shared channel data in a first uplink subframe called by the first downlink control information, and the ue will send the second uplink shared channel data in a second uplink subframe called by the second downlink control information.

In the data transmission method provided by the embodiment of the application, the first downlink control information and the second downlink control information issued by the base station are received in the first special subframe in the uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; and transmitting the first uplink shared channel data in the first uplink subframe, and transmitting the second uplink shared channel data in the second uplink subframe. According to the data transmission method provided by the embodiment of the application, as the first downlink control information and the second downlink control information issued by the base station are received in the special subframes at the same time, and different uplink subframes are respectively called, compared with the traditional data transmission method that two uplink subframes are called through one DCI0 at the same time, one of the uplink subframes can be effectively called under the condition that the DCI0 is subjected to false detection or missing detection, the utilization rate of uplink subframe resources is improved, and the data transmission rate is also improved.

The other data transmission method provided in this embodiment may be applied to the ue 104 in the implementation environment described above. On the basis of the embodiment shown in fig. 7, the first downlink control information includes a first uplink index field, where high and low bits of the first uplink index field are used to indicate scheduling of a first uplink subframe; the second downlink control information includes a second uplink index field, and high and low bits of the second uplink index field are used to indicate scheduling of the second uplink subframe.

Referring to fig. 8, a flowchart of another data transmission method according to the present embodiment is shown, and the data transmission method may be applied to the ue 104 in the implementation environment described above. On the basis of the embodiment shown in fig. 7, the method further includes the following steps:

step 802, determining a first uplink subframe according to the first downlink control information and the subframe number of the first special subframe.

Step 804, determining the second uplink subframe according to the second downlink control information and the subframe number of the first special subframe.

Specifically, step 802 specifically includes: and acquiring a first subframe time delay corresponding to the first downlink control information, and determining a first uplink subframe according to the first subframe time delay and a subframe number of a first special subframe. Step 804 specifically includes: and acquiring a second subframe time delay corresponding to the second downlink control information, and determining a second uplink subframe according to the second subframe time delay and the subframe number of the first special subframe.

In the data transmission method provided by the embodiment of the application, the first uplink subframe is determined according to the first downlink control information and the subframe number of the first special subframe; and determining a second uplink subframe according to the second downlink control information and the subframe number of the first special subframe. According to the data transmission method provided by the embodiment of the application, as the first downlink control information and the second downlink control information are used for determining different first uplink subframes and second uplink subframes, the user equipment can immediately acquire the corresponding uplink subframes when receiving the first downlink control information and the second downlink control information, and the data transmission efficiency is ensured.

After the base station receives the uplink shared channel data uploaded by the user equipment, the base station also needs to check the uplink shared channel data, and indicates the user equipment to newly upload or retransmit the uplink shared channel data according to a check result. Correspondingly, the user equipment invokes the corresponding uplink subframe to finish the new transmission and retransmission of the uplink shared channel data according to the indication of the base station. Therefore, please refer to fig. 9, which illustrates a flowchart of another data transmission method provided in the present embodiment, the data transmission method may be applied to the ue 104 in the implementation environment described above. On the basis of the embodiment shown in fig. 7, the method may further include the following steps:

Step 902, receiving downlink control information corresponding to the first check result and the second check result, which is issued by the base station, in a second special subframe; the first checking result is generated by checking the data of the first uplink shared channel by the base station, and the second checking result is generated by checking the data of the second uplink shared channel by the base station.

In an embodiment of the present application, the base station may send corresponding downlink control information in the second special subframe according to the first check result and the second check result. Specifically, the base station issues corresponding downlink control information aiming at uplink shared channel data which is successfully checked, and when the user equipment receives the downlink control information, the base station newly transmits the uplink shared channel data.

Step 904, scheduling the corresponding uplink sub-frame according to the downlink control information corresponding to the first check result and the second check result.

In one embodiment of the present application, after the ue receives the downlink control information sent by the base station according to the first check result and the second check result in the second special subframe, the ue responds to the downlink control information and schedules an uplink subframe corresponding to the downlink control information to perform new transmission on uplink shared channel data.

In the data transmission method provided by the embodiment of the application, downlink control information corresponding to the first check result and the second check result issued by the base station is received in the second special subframe; the first checking result is generated by checking the data of the first uplink shared channel by the base station, and the second checking result is generated by checking the data of the second uplink shared channel by the base station; and scheduling the corresponding uplink sub-frame according to the downlink control information corresponding to the first check result and the second check result. According to the data transmission method provided by the embodiment of the application, compared with the situation that one uplink shared channel data check fails in the traditional technology, the situation that the uplink shared channel data is newly transmitted is avoided, the transmission efficiency of the channel can be improved, and the data transmission rate is further improved.

Referring to fig. 10, a flowchart of another data transmission method provided in this embodiment is shown, and the data transmission method may be applied to the ue 104 in the implementation environment described above. Based on the embodiment shown in fig. 9, the step 904 may specifically include the following steps:

step 1002, if the first test result is successful and the second test result is failed, receiving third downlink control information in the second special subframe; scheduling a third uplink subframe to newly transmit uplink shared channel data according to the third downlink control information; the third uplink subframe is an uplink subframe corresponding to the next system frame in the first uplink subframe.

In an embodiment of the present application, when a first check result of the first uplink shared channel data is successful and a second check result of the second uplink shared channel data is failed, the base station may send third downlink control information in the second special subframe in response to the first check result, and after receiving the third control information, the ue may continue to transmit the new uplink shared channel data in the third uplink subframe. The third uplink subframe is an uplink subframe corresponding to the first uplink subframe in the next system frame.

Step 1004, if the first test result is failure and the second test result is success, receiving the fourth downlink control information in the second special subframe; scheduling a fourth uplink subframe to newly transmit uplink shared channel data according to the fourth downlink control information; the fourth uplink subframe is an uplink subframe corresponding to the second uplink subframe in the next system frame.

In an embodiment of the present application, when the second check result of the second uplink shared channel data is successful and the first check result of the first uplink shared channel data is failed, the base station may respond to the second check result to issue fourth downlink control information in the second special subframe, and after receiving the fourth control information, the ue may continue to transmit the new uplink shared channel data in the fourth uplink subframe. The fourth uplink subframe is an uplink subframe corresponding to the second uplink subframe in the next system frame. For the first check result, the base station may issue NACK in the corresponding downlink subframe according to the LTE protocol, so as to instruct the ue to retransmit the first uplink shared channel data in a non-adaptive retransmission manner.

Step 1006, if the first test result is successful and the second test result is successful, receiving the third downlink control information and the fourth downlink control information in the second special subframe; scheduling a third uplink subframe to newly transmit uplink shared channel data according to the third downlink control information; and scheduling the new uplink shared channel data of the fourth uplink subframe according to the fourth downlink control information.

In an embodiment of the present application, when the first check result of the first uplink shared channel data is successful and the second check result of the second uplink shared channel data is also successful, the base station may send third downlink control information in the second special subframe in response to the first check result, so that after receiving the third control information, the ue may continue to transmit the uplink shared channel data in the third uplink subframe. Meanwhile, the base station responds to the second check result and issues fourth downlink control information in the second special subframe, and after receiving the fourth control information, the user equipment can continue to transmit uplink shared channel data in the fourth uplink subframe.

According to the data transmission method provided by the embodiment of the application, the downlink control information issued by the base station aiming at the verification result of each uplink shared channel data is received in the second special subframe, and the corresponding uplink subframe is scheduled to finish the new transmission of the uplink shared channel data, so that the situation that the corresponding uplink subframe is scheduled to carry out the new transmission of the uplink shared channel data in time under the condition that the verification is successful can be ensured, and the data transmission rate under the condition that the downlink control information is missed or virtually detected due to poor transmission environment is improved.

It should be understood that, although the steps in the above-described flowcharts are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described above may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, and the order of execution of the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with at least a part of the sub-steps or stages of other steps or other steps.

Referring to fig. 11, a block diagram of a base station 1100 according to an embodiment of the present application is shown. As shown in fig. 11, the base station 1100 may include: a control information generation module 1101 and a transmission module 1102, wherein:

the control information generating module 1101 is configured to send first downlink control information and second downlink control information in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe;

the transmission module 1102 is configured to receive first uplink shared channel data sent by a user equipment in a first uplink subframe and second uplink shared channel data sent by the user equipment in a second uplink subframe.

Referring to fig. 12, a block diagram of a user equipment 1200 according to an embodiment of the present application is shown. As shown in fig. 12, the user equipment 1200 may include: a control information receiving module 1201 and a transmitting module 1202, wherein:

the control information receiving module 1201 is configured to receive, in a first special subframe in uplink and downlink configuration 0, first downlink control information and second downlink control information issued by a base station; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe;

The transmission module 1202 is configured to send first uplink shared channel data in a first uplink subframe and send second uplink shared channel data in a second uplink subframe.

The specific limitation of the base station and the user equipment can be referred to the limitation of the data transmission method hereinabove, and will not be repeated here. The above-mentioned respective modules in the base station and the user equipment may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a terminal, and the internal structure thereof may be as shown in fig. 13. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a data transmission method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in fig. 13 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

and receiving the first uplink shared channel data sent by the user equipment in the first uplink subframe and the second uplink shared channel data sent by the user equipment in the second uplink subframe.

and transmitting the first uplink shared channel data in the first uplink subframe, and transmitting the second uplink shared channel data in the second uplink subframe.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A method of data transmission, the method comprising:

issuing first downlink control information and second downlink control information in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; the first downlink control information comprises a first uplink index field, and high and low bits of the first uplink index field are used for indicating to schedule the first uplink subframe; the second downlink control information comprises a second uplink index field, and high and low bits of the second uplink index field are used for indicating to schedule the second uplink subframe; the high bit of the first uplink index field is a first value, and the low bit is a second value; the high-order bit of the second downlink control information is the second value, and the low-order bit is the first value;

2. The data transmission method according to claim 1, characterized in that the method further comprises:

3. The method of claim 2, wherein the determining the first uplink subframe according to the first downlink control information and the subframe number of the first special subframe comprises:

4. The data transmission method according to claim 1, characterized in that the method further comprises:

5. The method of claim 4, wherein the transmitting the corresponding downlink control information in the second special subframe according to the first check result and the second check result includes:

6. The data transmission method according to claim 5, wherein the third downlink control information is generated by flipping an NDI field in the first downlink control information; and the fourth downlink control information is generated by overturning an NDI field in the second downlink control information.

7. A method of data transmission, the method comprising:

receiving first downlink control information and second downlink control information issued by a base station in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; the first downlink control information comprises a first uplink index field, and high and low bits of the first uplink index field are used for indicating to schedule the first uplink subframe; the second downlink control information comprises a second uplink index field, and high and low bits of the second uplink index field are used for indicating to schedule the second uplink subframe; the high bit of the first uplink index field is a first value, and the low bit is a second value; the high-order bit of the second downlink control information is the second value, and the low-order bit is the first value;

8. The data transmission method according to claim 7, characterized in that the method further comprises:

9. The method of claim 8, wherein the determining the first uplink subframe according to the first downlink control information and the subframe number of the first special subframe comprises:

10. The data transmission method according to claim 7, characterized in that the method further comprises:

11. The method of claim 10, wherein the scheduling the corresponding uplink subframe according to the downlink control information corresponding to the first check result and the second check result comprises:

12. The data transmission method according to claim 11, wherein the third downlink control information is generated by flipping an NDI field in the first downlink control information; and the fourth downlink control information is generated by overturning an NDI field in the second downlink control information.

13. A base station, comprising:

the control information generation module is used for issuing first downlink control information and second downlink control information in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; the first downlink control information comprises a first uplink index field, and high and low bits of the first uplink index field are used for indicating to schedule the first uplink subframe; the second downlink control information comprises a second uplink index field, and high and low bits of the second uplink index field are used for indicating to schedule the second uplink subframe; the high bit of the first uplink index field is a first value, and the low bit is a second value; the high-order bit of the second downlink control information is the second value, and the low-order bit is the first value;

14. A user device, comprising:

the control information receiving module is used for receiving first downlink control information and second downlink control information issued by the base station in a first special subframe in uplink and downlink configuration 0; the first downlink control information is used for scheduling a first uplink subframe; the second downlink control information is used for scheduling a second uplink subframe; the first downlink control information comprises a first uplink index field, and high and low bits of the first uplink index field are used for indicating to schedule the first uplink subframe; the second downlink control information comprises a second uplink index field, and high and low bits of the second uplink index field are used for indicating to schedule the second uplink subframe; the high bit of the first uplink index field is a first value, and the low bit is a second value; the high-order bit of the second downlink control information is the second value, and the low-order bit is the first value;

15. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.

16. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 7 to 12 when the computer program is executed.

17. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.

18. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 7 to 12.