WO2018228236A1 - Data transmission method and device - Google Patents

Abstract

The embodiments of the present application provide a data transmission method and device. The method comprises: a sending device sending first control information to a receiving device, the first control information being used for indicating whether a coding block group (CBG) retransmission mode is used for transmitting a first transport block; the sending device sending second control information to the receiving device, the second control information being used for instructing the receiving device to receive a signal of the (n+k)th transmission of the first transport block, n and k both being integers equal to or greater than 1. The data transmission method and device in the embodiments of the present application are capable of sending control information corresponding to the retransmission mode of the transport block to the receiving device, thereby improving data transmission reliability.

Description

Data transmission method and device

The present application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference.

Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a data transmission method and apparatus in the field of communications.

Background technique

Mobile communication technology has profoundly changed people's lives, but the pursuit of higher performance mobile communication technology has never stopped. In order to cope with the explosive growth of mobile data traffic in the future, the connection of devices for mass mobile communication, and the emerging new services and application scenarios, the fifth generation (5G) mobile communication system emerged. The international telecommunication union (ITU) defines three types of application scenarios for 5G and future mobile communication systems: enhanced mobile broadband (eMBB), high reliable low latency communication (ultra reliable and low latency). Communications, URLLC) and massive machine type communications (mMTC).

Typical eMBB services include: ultra-high definition video, web browsing, video broadcasting, etc. The main features of these services are large amount of transmitted data and high transmission rate. Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of driverless cars and drones, and tactile interaction applications such as remote repair and remote surgery. The main features of these services are ultra-reliable. Sex, low latency, less data transfer and burstiness. Typical mMTC services include: smart grid distribution automation, smart city, etc. The main features are the large number of networked devices, the small amount of transmitted data, and the insensitivity of data to transmission delay. These mMTC terminals usually need to meet low cost and very long Standby time requirements.

Different data transmission requirements and data packet arrival characteristics are different, and the retransmission mode is different. The control information sent by the sending device to the receiving device for scheduling the receiving device to receive data has different meanings in different retransmission modes. Therefore, how to make the receiving device obtain the control information corresponding to the transport block of different retransmission modes is an urgent problem to be solved.

Summary of the invention

The data transmission method and apparatus provided by the embodiments of the present application can transmit control information corresponding to a retransmission mode of a transport block to a receiving device, thereby improving reliability of data transmission.

The first aspect provides a data transmission method, including: sending, by a sending device, first control information to a receiving device, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode; The sending device sends the second control information to the receiving device, where the second control information is used to instruct the receiving device to receive the n+kth transmission signal of the first transport block, where n and k are both greater than Or an integer equal to 1.

It should be understood that the retransmission mode of the first transport block is generally a TB retransmission mode or a CBG retransmission mode, and the transmitting device may indicate the indirect manner by directly indicating the retransmission mode of the first transport block of the receiving device. The first transmission block of the receiving device adopts a TB retransmission mode or a CBG retransmission mode. In a possible implementation, the sending device indicates, by using the foregoing first control information, a feedback mode of the receiving device for the first transport block, that is, the foregoing first control information is used to indicate feedback of the receiving device to the first transport block. Whether the number of bits is 1 bit for each TB of the first transport block, and if the number of feedback bits of the first transport block is 1 bit for each TB of the first transport block, the transmitting device indicates that the transmitting device The first transport block adopts a TB retransmission mode. If the number of feedback bits of the first transport block by the receiving device may be that one TB of the first transport block can feed back more than 1 bit, it indicates that the transmitting device is The first transport block uses the CBG retransmission mode.

The foregoing first control information may be physical layer signaling, may be media access control (MAC) signaling, or may be radio resource control (RRC) signaling, and the second control information may be Physical layer signaling, which may be MAC signaling or RRC signaling, is not limited in this embodiment of the present application.

In the data transmission method of the embodiment of the present application, the transmitting device sends the first control information to the receiving device to configure the retransmission mode of the transport block, so that the sending device can send the control information corresponding to the retransmission mode of the transport block to the receiving device, thereby Improve the reliability of data transmission.

In a first possible implementation manner of the first aspect, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate the first transport block. Whether the signal not used for decoding by the receiving device is included in the received signal transmitted for the nth time.

It should be understood that the non-CBG retransmission mode is a TB retransmission mode. If the second control information indicates that the received signal of the nth transmission of the first transmission block does not include the affected signal, the receiving device may The second control information directly receives the signal of the n+thth transmission of the first transport block. If the second control information indicates that the received signal of the nth transmission of the first transport block includes the affected signal, the receiving device may process the affected signal in the received signal of the nth transmission according to the indication, The receiving device may completely process the received signal transmitted at the nth time, or may further information according to the information indicated by the sending device (for example, resource indication information indicating which resources of the receiving device have an affected signal) for the nth time. The part of the received signal that is transmitted is processed, which is not limited in this embodiment of the present application.

It should be understood that the foregoing second control information may indicate whether the affected signal is included in the received signal of the nth transmission by using a display indication manner, or may indicate whether the received signal of the nth transmission is included in an implicit indication manner. The embodiment of the present application does not limit the affected signal.

With reference to the foregoing possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second control information includes a first indicator bit, where the first indicator bit is used to indicate the nth transmission Whether the signal received by the receiving device for decoding is included in the received signal.

In conjunction with the foregoing possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, if the sending device receives the feedback information of the nth transmission sent by the receiving device, The receiving device sends the second control information, where the second control information is specifically used to indicate that the received signal of the nth transmission includes a signal that is not used for decoding by the receiving device; After receiving the feedback information of the nth transmission sent by the receiving device, sending the second control information to the receiving device, where the second control information is specifically used to indicate the receiving of the nth transmission. Signals not used for decoding by the receiving device are not included in the signal.

With the above-mentioned possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, when the received signal of the nth transmission includes a signal that is not used for decoding by the receiving device, The second control information further includes clear indication information, where the clear indication information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission. The first transport block includes N CBGs, the N CBGs include the P CBGs, P and N are integers greater than or equal to 1, and P is less than or equal to N.

With reference to the above possible implementation manner of the first aspect, in other possible implementation manners of the first aspect, the clear indication information is 1 bit, in this case, the bit may indicate the receiving of the nth transmission Whether the signals are all cleared.

It should be understood that the number of the bits included in the clearing indication information may be fixed or unfixed, which is not limited in this embodiment of the present application.

In conjunction with the foregoing possible implementation manners of the first aspect, in other possible implementation manners of the first aspect, the clearing indication information includes a number of bits and the configured or preset settings of the sending device and the receiving device are The number of transmitted CBGs is related.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, in the case that the clearing indication information is included in the second control information, the number of bits included in the clearing indication information Corresponding to at least one of the following: the number N of CBGs included in the first transport block and the number M of CBGs cleared in the n+thth time.

Specifically, the number of bits of the clear indication information may be related only to the number N of CBGs included in the first transport block, or may be related to the number N of the first transport block and the n+k times. The number of the CBGs is related to each other, which is not limited by the embodiment of the present application.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the clearing indication information includes a number of bits that is a number N of CBGs included in the first transport block; or The number of bits included in the clear indication information is

With reference to the foregoing possible implementation manners of the first aspect, in other possible implementation manners of the first aspect, the clearing indication information includes a number of bits

Wherein said

Used to indicate the number P of CBGs to be cleared,

Used to indicate each of the C CBGs that are cleared.

It should be understood that if the number of bits included in the clear indication information is related to the number of pre-configured or pre-set transmission devices and receiving devices capable of transmitting CBGs maximum, the length of the clear indication information is always for the transmitting device and the receiving device. If the number of bits included in the clear indication information is related to the number N of CBGs included in the first transport block, the length of the clear indication information is when the transmitting device and the receiving device transmit the transport block including the same number of CBGs. stable. The fixed number of bits can reduce the complexity of the blind detection and clear indication information of the receiving device, further reduce the power consumption of the receiving device, and prolong the standby time of the receiving device.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the signal of the n+kth transmission is M CBGs of the N CBGs, and the M The CBG includes the P CBGs, and the second control information further includes transmission indication information, where the transmission indication information is used to indicate each CBG of the M CBGs, where M is an integer greater than or equal to 1, and P ≤ M < N.

Specifically, the embodiment of the present application is a special case in the TB retransmission mode, that is, the sending device performs one or several retransmissions in units of CBG, but the receiving device still uses 1 bit for feedback. The transmitting device performs one or several retransmissions in units of CBG, and needs to retransmit the P CBGs that are cleared by the clearing indication information to ensure that the receiving device acquires the complete first transport block. In a possible implementation manner, in the TB retransmission mode, the CBGs are retransmitted by the CBGs, and the cleared PBBs are the subset of the M CBGs. Therefore, in this case, the foregoing The second control information further includes transmission indication information, which is used to indicate the number M of C+ths of the n+kth transmission and which CBGs of the M CBGs are specifically.

In the embodiment of the present application, for a receiving device that does not support multi-bit ACK/NACK feedback and can only configure the TB retransmission mode, the affected signal can be efficiently saved by CBG retransmission after its received signal is affected. . It should be understood that the reason for this scenario may be that the receiving device does not have the function, or the uplink channel quality of the receiving device is not good, the power of the uplink transmitting signal is limited, and the like, which is not limited in this embodiment of the present application.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, if the P CBGs indicated by the indication information are cleared, the subset of the M CBGs indicated by the transmission indication information, and the transmission indication information It has been indicated which CBGs of the n+kth transmission are specific, and the number of bits included in the clear indication information may be M.

In conjunction with the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the clearing indication information and the transmission indication information are the same information, and P is equal to M.

In the case where P is equal to M, the CBG transmitted in the n+kth time is the CBG that needs to be cleared in the received signal of the nth transmission. In this case, only one information is needed for indication, so the indication information and the transmission indication information are cleared. For the same information, this document is referred to as CBG indication information. It should be understood that, in the TB retransmission mode, the receiving device and the transmitting device may pre-approve P=M, and after receiving the CBG indication information, the receiving device may directly determine, according to the CBG indication information, that the C+th transmission of the n+kth transmission is Which CBGs will simultaneously clear these CBGs in the received signal of the nth transmission.

It should also be understood that in the TB retransmission mode, the transmitting device and the receiving device are generally pre-configured to accept the existence of the above special case, that is, the transmitting device and the receiving device are pre-configured whether to adopt one or several retransmissions in units of CBG. . If both the transmitting device and the receiving device allow retransmission in CBG, the receiving device needs to detect the foregoing transmission indication information (or CBG indication information), and if the transmitting device and the receiving device do not allow retransmission in CBG units, The receiving device defaults that the above transmission indication information does not exist.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further And configured to indicate whether the second control information includes transmission indication information, where the transmission indication information is used to indicate each of the M CBGs that are transmitted by the n+k times, where the first transport block includes N CBG, the N CBGs include the M CBGs, and M and N are integers greater than or equal to 1, and M is less than N.

It should be understood that the foregoing transmission indication information may be a dedicated field in the foregoing second control information, that is, the bit corresponding to the foregoing transmission indication information is used for other purposes than the CBG for indicating transmission, and the foregoing transmission indication information may also be multiplexed as described above. The other fields in the second control information, that is, the bits corresponding to the foregoing transmission indication information, have other functions in addition to being used as the transmission indication, which is not limited in this embodiment of the present application.

It should be further understood that the second control information may indicate whether the second control information includes the transmission indication information by using a display indication manner, or may indicate, by using an implicit indication manner, whether the second control information includes the transmission indication information, The application embodiment does not limit this.

In conjunction with the foregoing possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second control information includes a second indicator bit, where the second indicator bit is used to indicate the second control information Whether the transmission indication information is included in the medium.

In conjunction with the foregoing possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, if the sending device receives the feedback information of the nth transmission sent by the receiving device, The receiving device sends the control information, where the control information includes the transmission indication information; if the sending device receives the feedback information of the nth transmission sent by the receiving device, the receiving device sends the feedback information to the receiving device And sending the control information, where the control information does not include the transmission indication information and the clear indication information.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indicator bit is used for Determining whether a signal not used by the receiving device for decoding is included in the received signal of the nth transmission.

Specifically, the first indicator bit is the same as the second indicator bit. It should be understood that the transmitting device may indicate the above various situations by using the same bit in the second control information. Taking the second indicator bit as an example, the sending device first sends the first control information to the receiving device to indicate the retransmission mode of the first transport block, and then sends the second control information to the receiving device, and retransmits the first transport block. When the mode is the TB retransmission mode, the second indicator bit is used to indicate whether the affected signal is included in the received signal of the nth transmission, in the case that the retransmission mode of the first transmission block is the CBG retransmission mode. The second indicator bit is used to indicate whether the transmission indication information is included in the second control information.

In the embodiment of the present application, the sending device indicates different meanings to the receiving device in different retransmission modes by using one bit of the indication bit, and increases the indication flexibility of the second control information, and can avoid the receiving device from the second Under the premise of misunderstanding of control information, the signaling overhead of control information is reduced, and system performance is improved.

With reference to the foregoing possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, in a case where M is equal to N, the second control information does not include the transmission indication information.

Specifically, the embodiment of the present application is a special case in the CBG retransmission mode, that is, the sending device transmits all CBGs of the first transport block, M=N, but the receiving device still uses N bits for feedback. In this case, the transmitting device may not include the transmission indication information in the second control information. For the receiving device, if it is determined that the second indication information does not include the transmission indication information, the signal of the n+kth transmission may be considered as all CBGs of the first transmission block.

It should be understood that the number of bits included in the foregoing transmission indication information may be fixed or unfixed, which is not limited in this embodiment of the present application.

In conjunction with the foregoing possible implementation manners of the first aspect, in other possible implementation manners of the first aspect, the transmission indication information includes a number of bits and the configured or preset settings of the sending device and the receiving device are The number of transmitted CBGs is related.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, in the case that the second control information includes the transmission indication information, the number of bits included in the transmission indication information Corresponding to at least one of the following: the number N of CBGs included in the first transport block and the number M of CBGs transmitted in the n+thth transmission.

With reference to the foregoing possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the transmission indication information includes a number of bits that is a number N of CBGs included in the first transport block, or The number of bits included in the transmission indication information is

In conjunction with the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the transmission indication information includes a number of bits

Wherein said

a number M of CBGs for indicating the n+kth transmission,

Used to indicate each of the M CBGs of the n+kth transmission.

In conjunction with the foregoing possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second control information is further used to indicate whether the second control information includes clear indication information, the clear indication The information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission, where the M CBGs include the P CBGs, and P is greater than or equal to An integer of 1 and P is less than or equal to M.

Specifically, when the transmitting device detects that the received signal of the nth transmission of the first transport block includes the affected signal, the sending device may send, by using the second control information, clear indication information, where the clear indication information is used, The P CBGs that are not used for decoding in the received signal of the nth transmission are instructed to be cleared. Further, the clear indication information needs to indicate which CBGs are specifically cleared by the P CBGs. In a possible implementation manner, the P CBGs that are cleared in the received signal of the nth transmission are a subset of the M CBGs transmitted in the n+thth transmission. In this case, the need for the sending device to pass the second control information refers to whether the clearing indication information is included in the second control information. Such an indication may be an implicit indication or a display indication, which is not limited by the embodiment of the present application.

In conjunction with the foregoing possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second control information includes a third indicator bit, where the third indicator bit is used to indicate the second control information Whether the clear indication information is included in the middle.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the third indicator bit is used for Determining whether a signal not used by the receiving device for decoding is included in the received signal of the nth transmission.

Specifically, the first indicator bit is the same as the third indicator bit. The transmitting device indicates a plurality of situations by indicating bits of the same bit. Taking the third indicator bit as an example, if the retransmission mode of the first transport block is the TB retransmission mode, the third indicator bit is used to indicate whether the affected signal is included in the received signal of the nth transmission. In a case that the retransmission mode of the first transport block is the CBG retransmission mode, the third indicator bit is used to indicate whether the clear indication information is included in the second control information.

With reference to the foregoing possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, in a case where the second control information includes the transmission indication information and the clear indication information, the transmission indication The information and the clear indication information include the number of bits

Specifically, in a case where the second control information includes both the transmission indication information and the clear indication information, the transmitting device may jointly encode the transmission indication information and the clear indication information. It should be understood that whether in the TB retransmission mode, in the CBG retransmission mode, or in other retransmission modes that may occur in the future, as long as the second information includes the above two types of information, the above joint coding may be used. The manner of the instruction is not limited in this embodiment of the present application.

With reference to the foregoing possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, if the first transport block adopts a CBG retransmission mode, the CBG indication information (the transmission indication information and/or the clear indication) At least part of the bits of the field are obtained by reusing bits of other fields, such as the MCS field, the RV field, and the like.

With reference to the foregoing possible implementation manners of the first aspect, in other possible implementation manners of the first aspect, if the CBG indication information only indicates which CBGs are transmitted, a dedicated field is used; if the CBG indication information indicates which CBGs are transmitted, Indicates which CBGs to clear, use private fields, or private fields and reuse fields. For example, the dedicated field contains 4 bits, and if both the transmission and the indication are cleared, the bits other than 4 bits are from the reused field.

In conjunction with the foregoing possible implementation manners of the first aspect, in other possible implementation manners of the first aspect, if the CBG indication information only indicates which CBGs are transmitted, the bit bitmap bitmap indication method is adopted; if the CBG indication information indicates the transmission Which CBGs indicate which CBGs are cleared, using the bitmap indication method or the joint coding method.

It should be understood that, for the case where the CBG indication information only indicates which CBGs are transmitted, the number of bits is not increased compared with the joint coding, and the method of using the bitmap indication is clear; for the CBG indication information, it is indicated which CBGs are transmitted and which CBGs are cleared. In the case of joint coding, the number of bits is smaller than that of the bitmap, and the bit overhead can be effectively reduced.

The second aspect provides another data transmission method, including: receiving, by the receiving device, first control information sent by the sending device, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode. Receiving, by the receiving device, second control information sent by the sending device, where the second control information is used to indicate that the receiving device receives the n+kth transmission signal of the first transport block, n and k All are integers greater than or equal to 1; the receiving device receives the n+kth transmitted signal according to the first control information and the second control information.

In a first possible implementation manner of the second aspect, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate the first transport block. Whether the signal not used for decoding by the receiving device is included in the received signal transmitted for the nth time.

With reference to the foregoing possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second control information includes a first indicator bit, where the first indicator bit is used to indicate the nth transmission Whether the signal received by the receiving device for decoding is included in the received signal.

With the above possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, in the case that the received signal of the nth transmission includes a signal that is not used for decoding by the receiving device, The second control information further includes clear indication information, where the clear indication information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission. The first transport block includes N CBGs, the N CBGs include the P CBGs, P and N are integers greater than or equal to 1, and P is less than or equal to N.

With reference to the foregoing possible implementation manners of the second aspect, in another possible implementation manner of the second aspect, the n+kth transmission signal is M CBGs in the N CBGs, and the M The CBG includes the P CBGs, and the second control information further includes transmission indication information, where the transmission indication information is used to indicate each CBG of the M CBGs, where M is an integer greater than or equal to 1, and P ≤ M < N.

With reference to the foregoing possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, the clearing indication information and the transmission indication information are the same information, and P is equal to M.

With reference to the foregoing possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further And configured to indicate whether the second control information includes transmission indication information, where the transmission indication information is used to indicate each of the M CBGs that are transmitted by the n+k times, where the first transport block includes N CBG, the N CBGs include the M CBGs, and M and N are integers greater than or equal to 1, and M is less than N.

With reference to the foregoing possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second control information includes a second indicator bit, where the second indicator bit is used to indicate the second control information Whether the transmission indication information is included in the medium.

With reference to the foregoing possible implementation manners of the second aspect, in another possible implementation manner of the second aspect, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indicator bit is used for Determining whether a signal not used by the receiving device for decoding is included in the received signal of the nth transmission.

With reference to the foregoing possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, in a case where M is equal to N, the second control information does not include the transmission indication information.

With reference to the foregoing possible implementation manners of the second aspect, in another possible implementation manner of the second aspect, in the case that the second control information includes the transmission indication information, the number of bits included in the transmission indication information Corresponding to at least one of the following: the number N of CBGs included in the first transport block and the number M of CBGs transmitted in the n+thth transmission.

In conjunction with the foregoing possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, the transmission indication information includes a number of bits

Wherein said

a number M of CBGs for indicating the n+kth transmission,

Used to indicate each of the M CBGs of the n+kth transmission.

With reference to the foregoing possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second control information is further used to indicate whether the second control information includes clear indication information, the clear indication The information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission, where the M CBGs include the P CBGs, and P is greater than or equal to An integer of 1 and P is less than or equal to M.

With reference to the foregoing possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second control information includes a third indicator bit, where the third indicator bit is used to indicate the second control information Whether the clear indication information is included in the middle.

With reference to the foregoing possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, in a case where the second control information includes the transmission indication information and the clear indication information, the transmission indication The information and the clear indication information include the number of bits

In a third aspect, there is provided a data transmission apparatus for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a data transmission apparatus is provided for performing the method of any of the second aspect or any of the possible implementations of the second aspect. In particular, the apparatus comprises means for performing the method of any of the possible implementations of the second aspect or the second aspect described above.

In a fifth aspect, a data transmission apparatus is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path for storing instructions for executing instructions stored in the memory to control the receiver to receive signals and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a sixth aspect, a data transmission apparatus is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path for storing instructions for executing instructions stored in the memory to control the receiver to receive signals and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.

In a seventh aspect, a data transmission system is provided, the system comprising the apparatus in any one of the possible implementations of the third aspect or the third aspect, and the possible implementation in any one of the fourth aspect or the fourth aspect Device; or

The system comprises the apparatus of any of the possible implementations of the fifth or fifth aspect, and the apparatus of any of the sixth or sixth aspect of the possible implementation.

In an eighth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is executed by a transmitting device, causing the transmitting device to perform the first aspect or the first aspect A method in a possible implementation.

According to a ninth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is executed by a receiving device, causing the receiving device to perform the second aspect or the second aspect A method in a possible implementation.

A tenth aspect, a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.

In an eleventh aspect, a computer readable medium is provided for storing a computer program comprising instructions for performing the method of any of the second aspect or any of the possible implementations of the second aspect.

DRAWINGS

FIG. 1 shows a schematic diagram of a communication system of an embodiment of the present application.

FIG. 2 shows a schematic flow chart of a data transmission method according to an embodiment of the present application.

FIG. 3 shows a schematic block diagram for a data transmission device in accordance with an embodiment of the present application.

FIG. 4 shows a schematic block diagram of another data transmission device in accordance with an embodiment of the present application.

FIG. 5 shows a schematic block diagram of another data transmission device in accordance with an embodiment of the present application.

FIG. 6 shows a schematic block diagram of another data transmission device in accordance with an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The technical solution of the embodiment of the present application can be applied to various communication systems, for example, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access. (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS) or worldwide interoperability for microwave access (WiMAX) communication system or future 5G system.

FIG. 1 shows a communication system 100 to which an embodiment of the present application is applied. The communication system 100 can include at least one network device 110. Network device 100 may be a device that communicates with a terminal device, such as a base station or base station controller or the like. Each network device 100 can provide communication coverage for a particular geographic area and can communicate with terminal devices (e.g., UEs) located within the coverage area (cell). The network device 100 may be a base transceiver station (BTS) in a GSM system or a code division multiple access (CDMA) system, or may be a base station (NodeB, NB) in a WCDMA system, or may be An evolved base station (evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a relay station, an access point, In-vehicle device, wearable device, network-side device in a future 5G network, or a network device in a public land mobile network (PLMN) that is evolving in the future.

The wireless communication system 100 also includes a plurality of terminal devices 120 located within the coverage of the network device 110. The terminal device 120 can be mobile or fixed. The terminal device 120 may refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user. Agent or user device. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication. Functional handheld device, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a future 5G network or terminal in a future public land mobile network (PLMN) Equipment, etc.

FIG. 1 exemplarily shows one network device and two terminal devices. Alternatively, the communication system 100 may include multiple network devices and may include other numbers of terminal devices within the coverage of each network device. The embodiment does not limit this.

Optionally, the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like. The embodiment of the present application is not limited thereto.

It should be understood that the receiving device and the sending device are described as an executing entity, and the sending device may be the foregoing network device 110 or the terminal device 120, and correspondingly, the receiving device may be the terminal device 120, or The network device 110 is not limited in this embodiment.

For ease of understanding, the related terms involved in the embodiments of the present application are first introduced.

1. Resource preemption

The resource preemption means that the network device selects part or all of the time-frequency resources to transmit the URLLC service data on the allocated time-frequency resources for transmitting the eMBB service data. In this case, the network device is used to transmit the URLLC service data. The data of the eMBB service is not sent on the time-frequency resource.

The URLLC service has extremely high latency requirements, and the generation of data packets is bursty and random. It may not generate data packets for a long time, or may generate multiple data packets in a short time. The characteristics of the data packets of the URLLC service affect the way resources are allocated by the communication system. The resources herein include but are not limited to: time domain symbols, frequency domain resources, time-frequency resources, codeword resources, and beam resources. Generally, the allocation of system resources is performed by the access network device. If the access network device allocates resources for the URLLC service by using reserved resources, the system resources are wasted when there is no URLLC service. Moreover, the short delay feature of the URLLC service requires the data packet to be transmitted in a very short period of time. Therefore, the access network device needs to reserve a sufficient bandwidth for the URLLC service, thereby causing a serious drop in system resource utilization.

Since the data volume of the eMBB service is relatively large and the transmission rate is relatively high, a long time scheduling unit is usually used for data transmission to improve transmission efficiency. The URLLC service data usually uses a short time scheduling unit to meet the requirements of ultra-short delay, for example, two time domain symbols with 15 kHz subcarrier spacing, or one time slot with 60 kHz subcarrier spacing, corresponding to seven time slots. The domain symbol, the corresponding length of time is 0.125ms.

Due to the burstiness of the data of the URLLC service, in order to improve the system resource utilization, the access network device usually does not reserve resources for downlink data transmission of the URLLC service. When the URLLC service data arrives at the access network device, if there is no idle time-frequency resource at this time, the access network device cannot wait for the scheduled transmission of the eMBB service data to complete after the short-latency delay of the URLLC service is satisfied. The URLLC service data is scheduled. The access network device may use a preemption manner to select part or all of the time-frequency resources of the allocated time-frequency resources for transmitting the eMBB service data for transmitting the URLLC service data.

2. Affected signals

Since the eMBB user does not know that the time-frequency resource that has been allocated to it is assigned to another URLLC user transmission, the eMBB user will perform subsequent decoding of the data that is not his own as its own data. However, in fact, this part of the data includes signals that are not used for decoding by the eMBB user, and is referred to herein as an "affected" signal. The appearance of this affected signal may be due to the following conditions:

(1) The time-frequency resource (for example, resource particle RE) used by the network device to transmit the signal for transmitting the signal does not carry the signal during the actual transmission but is used to carry other signals. In other words, the signal received by the terminal device on the time-frequency resource that is expected to transmit the signal is not the signal but other signals.

(2) In the actual transmission process, the time-frequency resource indicated by the network device to the terminal device for transmitting the signal does not carry the signal, nor does it carry any other signals. This is because the network device, after indicating to the terminal device that the resource is used to carry the signal, decides to leave the resource vacant or does not send any signal on the resource, and uses the resource to perform other purposes, for example, the network device utilizes the resource. Measuring interference of neighboring cells, and the like.

(3) In the actual transmission process, the time-frequency resource indicated by the network device to the terminal device for transmitting the signal carries the signal, but at the same time, the signal received by the terminal device on the time-frequency resource also includes the "Other signals" other than the signal.

It should be understood that the above "other signals" may be signals transmitted by the same network device. For example, the network device transmits the signal and "other signals" in a superposition manner. Specifically, the “superimposed manner transmitting signal” may be that the transmitting device sends the B signal on the same time-frequency resource while transmitting the A signal. The transmitting device can transmit the A signal and the B signal using different signal characteristics so that the receiving device can distinguish between the A signal and the B signal. For example, the transmitting device transmits the A signal and the B signal using different modulation mapping methods or different waveforms.

The above "other signals" may also be transmitted by other transmitting devices different from the above network devices. At this time, the "other signal" is an interference for the terminal device. That is, the signal received by the terminal device in the time-frequency resource carrying the signal is a useful signal expected by the terminal device, and the “other signal” is an interference signal. When the interference signal is a strong interference signal, the network device may send the indication information to the terminal device, indicating that the signal received by the terminal device at the time-frequency resource is affected by the interference, or indicating that the terminal device receives the time-frequency resource. The received signal is unreliable or indicates that the terminal device receives the signal with low reliability at the time-frequency resource.

3, clear the signal

Because of the "affected" condition of the signal, the affected signal may need to be cleared. Specifically, the terminal device may perform a clearing operation of the signal according to the indication of the clear indication information, the preset criteria and method, and one or more of the criteria and methods configured by the network device for the terminal device. For example, the clear indication information may be an indication to clear all or part of the received signal. The clear indication information may also be resource indication information, indicating that the signals on the time-frequency resources on the time-frequency resource are affected by the received signal in one transmission. The terminal device may clear the corresponding received signal according to the clearing indication information.

In the embodiment of the present application, the clear signal refers to decoding without using the cleared signal. Further, decoding is not performed based on the signal and a corresponding ACK/NACK feedback signal is generated. Clearing may be a partial clearing of the indicated signal, or it may be all clearing the indicated signal. Specifically, the terminal device determines that the clear signal may be expressed as: the soft bit information (soft bit information) corresponding to the signal to be cleared is set to 0 in the soft buffer, or the terminal device does not correspond to the signal to be cleared. The information is written into the soft memory; or the terminal device does not use the modulation symbol corresponding to the signal to be cleared in the signal when demodulating (for example, it is treated as if the modulation symbol is not received); or, the terminal device does not receive the signal to be cleared. Or, the terminal device discards the time domain receiving signal, the modulation symbol or the bit information corresponding to the to-be-cleared signal, and the like, which is not limited in this embodiment of the present application.

It should be understood that the present application is not limited to "eliminate", and the description may also use "discard", "drop", "remove", "obliterate", The "set to be zero" or the like is not limited in this embodiment of the present application.

4, retransmission mode

A transport block (TB) can be divided into a plurality of code blocks (CBs) for channel coding and decoding, respectively. For example, the 5G NR system uses an LDPC code, and the maximum number of CB bits is about 8192. It is also possible to divide a TB with a larger number of bits into multiple CBs for parallel coding and decoding. Generally, each CB has an independent check function. For LDPC, each CB can also add a CB CRC, or the LDPC code matrix itself has a check function, that is, the decoder can separately check each CB. Whether the decoding is correct or not. Thus, the receiving device (network device or terminal device) has the ability to independently decode different CBs in one transport block. A certain number of CBs are called CB groups (CBGs), one TB contains at least one CBG, and one CBG contains at least one CB.

In the LTE system, information is transmitted in units of TB. A TB can be sent to the receiving device by the transmitting device after multiple transmissions. The first transmission is called initial transmission, and the subsequent transmission is called retransmission. This is called the TB retransmission mode. Because dynamic interference or temporary resource preemption may exist in a 5G system, transmissions that are interfered by dynamic interference or temporary resources are usually affected by some CBGs. Therefore, in the 5G NR system, in addition to supporting the TB-based retransmission mode, the CBG transmission mode is also supported. In the CBG transmission mode, the initial transmission is still to transmit a complete TB, and the retransmitting transmitting device can transmit some or all of the CBGs in the TB to the receiving device. That is, the sending device can send the corresponding CBG according to requirements. For example, the sending device can retransmit the CBG signal that has not been correctly decoded to the receiving device, or the transmitting device can retransmit the affected CBG signal in a certain transmission to the receiving device. and many more.

Note that the above TB retransmission mode and CBG retransmission mode are only names that are clearly stated. They may also be referred to as "TB-based retransmission mode" and "CBG-based retransmission mode", "non-CBG retransmission". The mode and the CBG retransmission mode, the retransmission mode one, the retransmission mode 2, and the like are not limited in this embodiment of the present application.

It should be understood that in the TB retransmission mode, the receiving device only needs to perform 1-bit feedback of the TB as a whole at a time. In the CBG retransmission mode, the number of CBGs that are retransmitted each time may be different, and the CBG may be different for each retransmission. The receiving device needs to perform 1-bit feedback for each CBG each time. For example, the sending device is in the first Three CBGs are transmitted for three transmissions, and three bits of feedback are required for the receiving device. The transmitting device transmits five CBGs for the fourth transmission, and the receiving device requires 5-bit feedback. Therefore, different retransmission modes can be distinguished according to whether the number of bits fed back by the receiving device is fixed.

It is particularly noteworthy that there is a special case in the TB retransmission mode that allows the transmitting device to perform one or several retransmissions in CBG units, but the receiving device still uses 1 bit for feedback; in the CBG retransmission mode. There is a special case where the transmitting device transmits all CBGs in one TB at a certain retransmission, although the same as the TB retransmission mode for this retransmission, the receiving device needs to target each CBG in all the CBGs. 1-bit feedback is performed. Therefore, the number of bits that the receiving device feeds back each time in the CBG retransmission mode may be greater than 1 bit.

FIG. 2 shows a schematic flowchart of a data transmission method 200 in the embodiment of the present application. The method 200 can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present application is not limited thereto.

S210, the sending device sends, to the receiving device, first control information, where the first control information is used to indicate whether the first transport block is transmitted by using the coded block group CBG retransmission mode;

Correspondingly, the receiving device receives the first control information;

Specifically, the sending device sends the first control information to the receiving device, and indicates that the sending device sends a retransmission mode of the first transport block, where the retransmission mode is generally a TB retransmission mode or a CBG retransmission mode. In a possible implementation manner, the TB retransmission mode is the default mode, and the sending device only needs to notify the receiving device whether to adopt the CBG retransmission mode. After receiving the first control information, the receiving device may determine its own feedback mode according to the retransmission mode indicated by the first control information.

It should be understood that the sending device may further indicate, in an indirect manner, that the first transmission block of the receiving device is in a TB retransmission mode or a CBG retransmission mode. In a possible implementation manner, the sending device passes the foregoing first control information. Determining, by the receiving device, a feedback mode for the first transport block, that is, the first control information is used to indicate whether the number of feedback bits of the first transport block of the receiving device is 1 bit for each TB of the first transport block, If the number of feedback bits of the first transport block is 1 bit for each TB of the first transport block, it indicates that the transmitting device uses the TB retransmission mode for the first transport block, if the receiving device pairs The number of feedback bits of the first transport block may be that one TB of the first transport block may feed back more than one bit, indicating that the transmitting device adopts a CBG retransmission mode for the first transport block.

The foregoing first control information may be physical layer signaling, which may be media access control (MAC) signaling, or may be radio resource control (RRC) signaling, which is not used in this embodiment of the present application. limited.

S220, the sending device sends second control information to the receiving device, where the second control information is used to instruct the receiving device to receive the n+kth transmission signal of the first transport block, n and k All are integers greater than or equal to 1;

Correspondingly, the receiving device receives the second control information, where the second control information may be physical layer signaling, may be MAC signaling, and may be RRC signaling;

It should be understood that the above k may be preset in the terminal device, or the receiving device may be configured by the sending device by using the signaling. In a possible implementation manner, k may be equal to 1 or 2. This is not limited.

S230. The sending device sends, to the receiving device, a signal of an n+th transmission of the first transport block.

Correspondingly, the receiving device receives the signal of the n+kth transmission according to the first control information and the second control information.

Specifically, the sending device sends the second control information to the receiving device, where the receiving device receives the signal of the n+kth transmission of the first transport block, and then the sending device uses the weight corresponding to the first control information. And transmitting, by the receiving device, a signal of the n+thth transmission of the first transmission block, where the receiving device performs reception on the configured time-frequency resource.

In the embodiment of the present application, the initial transmission of the first transport block is referred to as “the first transmission of the first transport block” (n=1), and it should be understood that, in some cases, the first transmission of the first transport block It can also be referred to as “the 0th transmission of the first transport block”, and then n can be equal to 0, which is not limited in this embodiment of the present application.

In the data transmission method of the embodiment of the present application, the transmitting device sends the first control information to the receiving device to configure the retransmission mode of the transport block, so that the sending device can send the control information corresponding to the retransmission mode of the transport block to the receiving device, thereby Improve the reliability of data transmission.

As an optional embodiment, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate receiving of the nth transmission of the first transport block. Whether signals in the signal that are not used for decoding by the receiving device are included in the signal.

Specifically, the non-CBG retransmission mode is a TB retransmission mode. When the retransmission mode of the first transport block is a TB retransmission mode, the second control information is further used to indicate the first transmission block. Whether the signal received by the n-th transmission includes a signal that is not used for decoding by the receiving device, and the signal that is not used by the receiving device for decoding is that the signal on the time-frequency resource used to carry the first transport block is not used for translation by the receiving device. The code, that is, whether the "affected signal" is included in the received signal of the nth transmission of the first transport block.

If the second control information indicates that the received signal of the nth transmission of the first transmission block does not include the affected signal, the receiving device directly receives the first transmission block according to the second control information, as described in S230. The signal transmitted n+k times can be used.

If the second control information indicates that the received signal of the nth transmission of the first transport block includes the affected signal, the receiving device may process the affected signal of the nth transmitted received signal according to the indication. The receiving device may also process all the received signals transmitted in the nth time, or may further information according to further information indicated by the sending device (for example, resource indicating information indicating which resources of the receiving device have an affected signal). The portion of the received signal of the secondary transmission is processed, which is not limited in this embodiment of the present application.

If the second control information indicates that the received signal of the nth transmission of the first transport block includes the affected signal, the receiving device may further determine whether the affected signal has been processed according to the resource indication information. If the receiving device has acquired the resource indication information and processes the affected signal on the corresponding resource according to the resource indication information, the receiving device does not perform additional processing on the second control information, and continues to receive the control information scheduling. The n+kth data transmission of a transport block. If the receiving device does not process the affected signal according to the resource indication information (including the resource indicating information being available but the receiving device is not detected, and the resource indicating information is unavailable), the receiving device needs to be according to the second control information. And clearing all signals of the nth transmission of the first transport block. The resource indication information here is used to indicate which resources of the receiving device have an affected signal.

The above method can effectively prevent the incorrect signal from being stored or left in the memory due to the missed detection or misdetection of the resource indication information by the receiving device, that is, the received signal of the nth transmission indicated by the second control information. Whether or not the affected signal is included is a dual monitoring of the resource indication information.

It should be understood that the foregoing second control information may indicate whether the affected signal is included in the received signal of the nth transmission by using a display indication manner, or may indicate whether the received signal of the nth transmission is included in an implicit indication manner. The embodiment of the present application does not limit the affected signal.

In an optional embodiment, the second control information includes a first indicator bit, where the first indicator bit is used to indicate whether the received signal of the nth transmission includes not used by the receiving device for decoding. signal of.

Specifically, it may be indicated by an explicit indication, that is, using 1 bit in the second control information, where the 1 bit may be second control information, such as downlink control information (DCI), always including 1 bit. The receiving device may determine that the first control information includes the 1 bit according to the configuration of the sending device. For example, the sending device configures the receiving device to monitor the resource indication information, and accordingly, the receiving device may determine, according to the configuration, that the second control information includes the 1-bit information. It should be understood that the sending device may configure, by using physical layer signaling, MAC layer signaling, or RRC layer signaling, whether the first bit of information is included in the second control information.

As an optional embodiment, if the sending device sends the feedback information of the nth transmission sent by the receiving device, sending the second control information to the receiving device, the second The control information is specifically configured to indicate that the received signal of the nth transmission includes a signal that is not used by the receiving device for decoding; if the sending device receives the nth transmission that is sent by the receiving device After the information is sent, the second control information is sent to the receiving device, where the second control information is specifically used to indicate that the received signal of the nth transmission does not include a signal that is not used for decoding by the receiving device. .

Specifically, the meaning of the second control information may be determined by an implicit indication, that is, according to the sending time of the second control information, that is, if the second control information of the n+kth transmission occurs at the nth time After the transmission is received for a duration (for example, no later than the receiving device feeding back the ACK/NACK of the nth transmission to the transmitting device), the receiving device determines the second control information of the n+kth transmission for indicating the nth time The transmitted signal includes the affected signal. Otherwise, the receiving device determines that the n+kth transmission of the second control information is used to indicate that the affected signal is not included in the received signal of the nth transmission.

In an optional embodiment, in a case that the received signal of the nth transmission includes a signal that is not used by the receiving device for decoding, the second control information further includes clear indication information, the clearing The indication information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission, where the first transport block includes N CBGs, and the N CBGs The P CBGs are included, P and N are integers greater than or equal to 1, and P is less than or equal to N.

Specifically, in the case that the received signal of the nth transmission includes the affected signal, the second control information may further include clear indication information, where the receiving device needs to specify the received signal in the nth transmission. Which affected signals are cleared. For example, if the foregoing first transport block includes N CBGs, the clear indication information may indicate that the receiving device clears the P CBGs in the N CBGs, and therefore the clear indication information needs to indicate that the N CBGs are cleared. Which P CBG. The receiving device may clear the P CBGs in the received signal of the nth transmission according to the clear indication information.

It should be understood that the number of bits included in the above clear indication information may be fixed or unfixed, and the following two cases are respectively described in detail.

As an optional embodiment, the clear indication information is 1 bit, in which case this bit may indicate whether the received signal for the nth transmission is completely cleared.

For example, if the clear indication information is 1, the receiving device may clear all the received signals transmitted for the nth time. If the clear indication information is 0, the receiving device may not perform the clear processing on the received signal of the nth transmission, but The application embodiment is not limited to this.

As an optional embodiment, the clear indication information includes a number of bits related to the configured or preset number of the transmitting device and the receiving device that can transmit the maximum number of CBGs.

It should be understood that the configuration may be configured by the sending device (eg, the network device) for the receiving device by using a physical layer, a MAC layer, or an RRC layer signaling before transmitting the first control information; the preset may be a network device and/or The terminal equipment is preset before leaving the factory, that is, the agreement is agreed.

Specifically, if the number of CBGs that can be transmitted by the transmitting device and the receiving device that are configured or preset is S, the value of S is specified by the communication standard protocol specification, or is sent by the sending device or the receiving device. Configured. The number of bits of the clear indication information may be determined only according to S. In a possible implementation manner, the number of bits included in the clear indication information is

For example, when S=2, the clear indication information is 1 bit; when S=3 or S=4, the clear indication information is 2 bits; when S=5 or S=8, the clear indication information is 3 bits.

In an optional embodiment, in the case that the second control information includes the clear indication information, the number of bits included in the clear indication information is related to at least one of the following: the first The number N of CBGs included in the transport block and the number M of CBGs cleared by the n+kth time.

Specifically, the number of bits of the clear indication information may be related only to the number N of CBGs included in the first transport block, or may be related to the number N of the first transport block and the n+k times. The number of the CBGs is related to each other, which is not limited by the embodiment of the present application.

As an optional embodiment, the number of bits included in the clear indication information is the number N of CBGs included in the first transport block; or the number of bits included in the clear indication information is

Specifically, when the foregoing clear indication information is only related to the number N of CBGs included in the first transport block, the CBG that needs to be cleared may be indicated by using a bit bitmap bitmap, for example, for each CBG in each CBG of N, 1 means clear, 0 means no clear, then the clear indication information includes the number of bits N. When the foregoing clear indication information is only related to the number N of CBGs included in the first transport block, the number of bits may be further determined according to N, and the number of bits is further determined. For example, when N=4, there is

Kind of clearing status, as shown in the following table:

Table I

Status number	Cleared CBG
0	0001
1	0010
2	0100
3	1000
4	0011
5	0101
6	0110
7	1001
8	1010
9	1100
10	0111
11	1011
12	1101

13	1110
14	1111

For the above 15 clear states, the number of bits required to clear the indication information is

It should be understood that if the number of bits included in the clear indication information is related to the number of pre-configured or pre-set transmission devices and receiving devices capable of transmitting CBGs maximum, the length of the clear indication information is always for the transmitting device and the receiving device. If the number of bits included in the clear indication information is related to the number N of CBGs included in the first transport block, the length of the clear indication information is when the transmitting device and the receiving device transmit the transport block including the same number of CBGs. stable. The fixed number of bits can reduce the complexity of the blind detection and clear indication information of the receiving device, further reduce the power consumption of the receiving device, and prolong the standby time of the receiving device.

As an optional embodiment, the clear indication information includes a number of bits.

Wherein said

Used to indicate the number P of CBGs to be cleared,

Used to indicate each of the P CBGs that are cleared.

Specifically, in the case that the number of bits included in the clear indication information is not fixed, the number of bits included in the clear indication information may be divided into two parts, the first part indicating the number P of cleared CBGs, and the second part indicating the specific Which CBGs are cleared. For the case where the number of bits for clearing the indication information is not fixed, the first part may be passed first.

Indicates the number P of cleared CBGs, and further adopts

Indicates which CBGs the P CBGs are specifically. For example, N=2,

P=1,

As shown in the following table, where 1 indicates clearing and 0 indicates no clearing.

Table II

first part	The value of P	The second part of the number of bits	the second part	Cleared CBG
0	1	1	0	01
			1	10
1	2	0	--	11

In the above table, the first part and the second part together indicate which CBGs should be cleared. If the clear indication information is 00, it means that only the second CBG is cleared. If the clear indication information is 01, it means that only the first clearing is performed. A CBG. It should be understood that when P=2, it means to clear all CBGs in the received signal of the nth transmission of the first transport block. For this case, it is not necessary to use the clear indication information to indicate, so the above P=2 The second part does not exist.

Another example, N=4,

When P=1,

When P=2,

When P=3,

When P=3,

The details are as follows, where 1 indicates clearing and 0 indicates no clearing.

Table 3

first part	The value of P	The second part of the number of bits	the second part	Clear status
00	1	2	00	0001
			01	0010
			10	0100
			11	1000
01	2	3	000	0011
			001	0110

			010	1100
			011	1001
			100	1010
			101	1100
			110	--
			111	--
10	3	2	00	0111
			01	1011
			10	1101
			11	1110
11	4	0	--	1111

It should be understood that for the case of P=2, there are six kinds of clear states, but only two kinds of clear states can be represented by using 2 bits, so 3 bits are needed, and 3 bits can represent 8 states, wherein the two unused states can be vacant. It can also be used to indicate other indication information, which is not limited by the embodiment of the present application.

It should be understood that the foregoing method for indicating the number of bits may be applied to the clear indication information, and may also be applied to the transmission indication information, which is not limited in this embodiment of the present application.

As an optional embodiment, the signal of the n+kth transmission is M CBGs of the N CBGs, and the M CBGs include the P CBGs, and the second control information is further The transmission indication information is used to indicate each CBG of the M CBGs, M is an integer greater than or equal to 1, and P≤M<N.

Specifically, the embodiment of the present application is a special case in the TB retransmission mode, that is, the sending device performs one or several retransmissions in units of CBG, but the receiving device still uses 1 bit for feedback. The transmitting device performs one or several retransmissions in units of CBG, and needs to retransmit the P CBGs that are cleared by the clearing indication information to ensure that the receiving device acquires the complete first transport block. In a possible implementation manner, in the TB retransmission mode, the CBGs are retransmitted by the CBGs, and the cleared PBBs are the subset of the M CBGs. Therefore, in this case, the foregoing The second control information further includes transmission indication information, which is used to indicate the number M of C+ths of the n+kth transmission and which CBGs of the M CBGs are specifically.

In the embodiment of the present application, for a receiving device that does not support multi-bit ACK/NACK feedback and can only configure the TB retransmission mode, the affected signal can be efficiently saved by CBG retransmission after its received signal is affected. . It should be understood that the reason for this scenario may be that the receiving device does not have the function, or the uplink channel quality of the receiving device is not good, the power of the uplink transmitting signal is limited, and the like, which is not limited in this embodiment of the present application.

In a possible implementation manner, the number of bits of the transmission indication information may be

Wherein said

a number M of CBGs for indicating the n+kth transmission,

Used to indicate each of the M CBGs of the n+kth transmission.

It should also be understood that if the P CBGs indicated by the clear indication information are a subset of the M CBGs indicated by the transmission indication information, and the transmission indication information has indicated which CBGs of the n+kth transmission are specific CBGs, the clear indication The number of bits included in the information may be M.

Specifically, if the number of bits for transmitting the indication information is

(The first part and the second part), then the number of bits for clearing the indication information is M (third part), and when both the CBG indicating the transmission and the cleared CBG are indicated, a total of

Bit.

For example, N=4,

When M=1, the transmitted CBG is the cleared CBG, and no extra bits are needed to indicate. When M=2, 2 bit indication is needed, where 1 means clear, 0 means no clear, M=3 and M=4. Similar to this, it will not be repeated here, as shown in the table below.

Table 4

first part	The value of M	The third part of the number of bits	the third part	Clear status
00	1	--	--	1 (the one to transmit)
01	2	2	00	--
			01	Transfer the first of 2
			10	Transfer 2 of the 2
			11	2 transmitted
10	3	3	000
			001	Transfer the first of 3
			010	Transfer 2 of the 2
			011	Transfer 3 of the first 2
			100	Transfer 3 of the 3
			101	Transfer 3 first and third
			110	2 after transmission
			111	3 transmitted
11	4	4	0000	--
			0001	Transfer the first of 4
			0011	Transfer 2 of the 2
			0100	Transfer 3 of the 4
			0101	Transfer 1st and 3rd in 4
			0110	Transfer the 2nd and 3rd of 4
			0111	Transfer 1 to 3 of 4
			1000	Transfer 4 of 4
			1001	Transfer the first and fourth of 4
			1011	Transfer 1, 5, 4 in 4
			1100	Transfer 3, 4 in 4
			1101	Transfer 1, 3, 4 in 4
			1110	Transfer 2, 3, 4 of 4
			1111	Transfer 1 to 4 of 4

As an optional embodiment, the clear indication information and the transmission indication information are the same information, and P is equal to M.

In the case where P is equal to M, the CBG transmitted in the n+kth time is the CBG that needs to be cleared in the received signal of the nth transmission. In this case, only one information is needed for indication, so the indication information and the transmission indication information are cleared. For the same information, this document is referred to as CBG indication information. It should be understood that, in the TB retransmission mode, the receiving device and the transmitting device may pre-approve P=M, and after receiving the CBG indication information, the receiving device may directly determine, according to the CBG indication information, that the C+th transmission of the n+kth transmission is Which CBGs will simultaneously clear these CBGs in the received signal of the nth transmission.

It should also be understood that in the TB retransmission mode, the transmitting device and the receiving device are generally pre-configured to accept the existence of the above special case, that is, the transmitting device and the receiving device are pre-configured whether to adopt one or several retransmissions in units of CBG. . If both the transmitting device and the receiving device allow retransmission in CBG, the receiving device needs to detect the foregoing transmission indication information (or CBG indication information), and if the transmitting device and the receiving device do not allow retransmission in CBG units, The receiving device defaults that the above transmission indication information does not exist.

As an optional embodiment, when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate whether the second control information includes the transmission indication information. The transmission indication information is used to indicate each of the M CBGs that are transmitted by the n+k times, the first transport block includes N CBGs, and the N CBGs include the M CBGs, M And N are integers greater than or equal to 1, and M is less than N.

Specifically, in the case that the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is used to indicate whether the second indication information includes the transmission indication information, because at least part of the bits of the transmission indication information It may be obtained by reusing bits of other fields, such as a modulation and coding scheme (MCS) field, a redundancy version (RV) field, a new data indicator (NDI) field, and the like. Therefore, in order to avoid the missed detection of the transmission indication information by the receiving device, it is necessary to indicate whether the transmission indication information exists by using the foregoing second control information.

If the transmission indication information is (at least partially) indicated by reusing bits of other fields, the receiving device, after receiving the second control information, understands which bits in the DCI are transmission indication information based on “CBG indication information existence”. Which bits are other fields that may be reused. Therefore, in the embodiment of the present application, the erroneous understanding of the DCI by the receiving device can be avoided, unnecessary retransmission due to erroneous interpretation of the second control information is reduced, and resource waste is avoided.

It should be understood that the foregoing transmission indication information may be a dedicated field in the foregoing second control information, that is, the bit corresponding to the foregoing transmission indication information is used for other purposes than the CBG for indicating transmission, and the foregoing transmission indication information may also be multiplexed as described above. The other fields in the second control information, that is, the bits corresponding to the foregoing transmission indication information, have other functions in addition to being used as the transmission indication, which is not limited in this embodiment of the present application.

If the bit corresponding to the foregoing transmission indication information is used for other purposes than the transmission of the CBG, when the second control information indicates that the transmission indication information is included, the receiving device understands that the transmission indication information field in the second control information is valid ( Or when the second control information indicates that the transmission indication information is not included, the receiving device understands that the transmission indication information field in the second control information is invalid (or is disabled), that is, The second control information includes a transmission indication field, but the transmission indication field does not take effect.

If the bit corresponding to the foregoing transmission indication information is used as an indication of the other control field in addition to being used as the transmission indication, when the second control information indicates that the transmission indication information is included, the receiving device understands that the second control is The information includes the transmission indication information, or the bit corresponding to the transmission indication information in the second control information is understood to be the transmission indication information; when the second control information indicates that the transmission indication information is not included, the receiving device understands that the foregoing The second control information does not include the transmission indication information, or the bit corresponding to the transmission indication information in the second control information is not to be understood as a transmission indication field, but should be understood as other fields, for example, MCS field, RV field, NDI Fields and more.

It should be understood that the foregoing second control information may indicate whether the second control information includes the transmission indication information in a manner of displaying the indication, or may indicate, by using an implicit indication manner, whether the second control information includes the transmission indication information. The embodiment does not limit this.

In an optional embodiment, the second control information includes a second indicator bit, where the second indicator bit is used to indicate whether the transmission indication information is included in the second control information.

Specifically, it may be indicated by an explicit indication, that is, using 1 bit in the second control information, which may be 1 bit always included in the second control information (for example, downlink control information DCI), or may be a receiving device. The first control information is included in the first control information according to the configuration of the transmitting device. For example, the sending device configures the receiving device to monitor the resource indication information, and accordingly, the receiving device may determine, according to the configuration, that the second control information includes the 1-bit information.

As an optional embodiment, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indicator bit is used to indicate whether the received signal of the nth transmission includes not used. The receiving device performs a decoded signal.

Specifically, the first indicator bit is the same as the second indicator bit. It should be understood that the transmitting device may indicate the above various situations by using the same bit in the second control information. Taking the second indicator bit as an example, the sending device first sends the first control information to the receiving device to indicate the retransmission mode of the first transport block, and then sends the second control information to the receiving device, and retransmits the first transport block. When the mode is the TB retransmission mode, the second indicator bit is used to indicate whether the affected signal is included in the received signal of the nth transmission, in the case that the retransmission mode of the first transmission block is the CBG retransmission mode. The second indicator bit is used to indicate whether the transmission indication information is included in the second control information.

In the embodiment of the present application, the sending device indicates different meanings to the receiving device in different retransmission modes by using one bit of the indication bit, and increases the indication flexibility of the second control information, and can avoid the receiving device from the second Under the premise of misunderstanding of control information, the signaling overhead of control information is reduced, and system performance is improved.

As an optional embodiment, if the sending device sends the feedback information of the nth transmission sent by the receiving device, the control device sends the control information to the receiving device, where the control information includes Transmitting the indication information; if the transmitting device receives the feedback information of the nth transmission sent by the receiving device, sending the control information to the receiving device, where the control information does not include the transmission Indication information and the clear indication information.

Specifically, the meaning of the second control information may be determined by an implicit indication, that is, according to the sending time of the second control information, that is, if the second control information of the n+kth transmission occurs at the nth time Receiving a period of time after the transmission is received (for example, no later than the receiving device feeding back the ACK/NACK of the nth transmission to the transmitting device), the receiving device determines that the second control information includes the transmission indication information, otherwise, the receiving device determines the The second control information does not include the transmission indication information.

As an optional embodiment, in a case where M is equal to N, the second control information does not include the transmission indication information.

Specifically, the embodiment of the present application is a special case in the CBG retransmission mode, that is, the sending device transmits all CBGs of the first transport block, M=N, but the receiving device still uses N bits for feedback. In this case, the transmitting device may not include the transmission indication information in the second control information. For the receiving device, if it is determined that the second indication information does not include the transmission indication information, the signal of the n+kth transmission may be considered as all CBGs of the first transmission block.

It should be understood that the number of bits included in the foregoing transmission indication information may be fixed or unfixed, and the following two cases are respectively described in detail.

As an optional embodiment, the number of bits included in the transmission indication information is related to the number of pre-configured transmission devices and the maximum number of CBGs that the receiving device can transmit.

In an optional embodiment, where the second indication information includes the transmission indication information, the number of bits included in the transmission indication information is related to at least one of: the first The number N of CBGs included in the transport block and the number M of CBGs transmitted in the n+thth time.

Specifically, the number of bits included in the transmission indication information is the number N of CBGs included in the first transport block; or the number of bits included in the transmission indication information is

It should be understood that if the number of bits included in the transmission indication information is related to the number of configured or pre-set transmission devices and the maximum number of CBGs that the receiving device can transmit, the length of the transmission indication information is always fixed for the transmitting device and the receiving device. If the number of bits included in the transmission indication information is related to the number N of CBGs included in the first transport block, the length of the transmission indication information is fixed if the transmitting device and the receiving device transmit the transport block including the same number of CBGs. of. The fixed number of bits can reduce the complexity of the blind detection transmission indication information of the receiving device, further reduce the power consumption of the receiving device, and prolong the standby time of the receiving device.

As an optional embodiment, the transmission indication information includes a number of bits.

Wherein said

a number M of CBGs for indicating the n+kth transmission,

Used to indicate each of the M CBGs of the n+kth transmission.

Specifically, in the case that the number of bits included in the transmission indication information is not fixed, the number of bits included in the transmission indication information may be divided into two parts, and the first part indicates the number M of CBGs transmitted in the n+kth transmission, and the second Partially indicates which CBGs are specifically transmitted.

It should be understood that the number of bits of the transmission indication information is similar to the representation of the number of bits of the above-mentioned clear indication information, as shown in Tables 1 to 3, and details are not described herein again.

In an optional embodiment, the second control information is further used to indicate whether the second control information includes clear indication information, where the clear indication information is used to indicate that the received signal of the nth transmission is not used. Each of the P CBGs that are decoded by the receiving device, the M CBGs include the P CBGs, P is an integer greater than or equal to 1, and P is less than or equal to M.

Specifically, when the transmitting device detects that the received signal of the nth transmission of the first transport block includes the affected signal, the sending device may send, by using the second control information, clear indication information, where the clear indication information is used, The P CBGs that are not used for decoding in the received signal of the nth transmission are instructed to be cleared. Further, the clear indication information needs to indicate which CBGs are specifically cleared by the P CBGs. In a possible implementation manner, the P CBGs that are cleared in the received signal of the nth transmission are a subset of the M CBGs transmitted in the n+thth transmission. In this case, the need for the sending device to pass the second control information refers to whether the clearing indication information is included in the second control information. Such an indication may be an implicit indication or a display indication, which is not limited by the embodiment of the present application.

As an optional embodiment, the second control information includes a third indicator bit, where the third indicator bit is used to indicate whether the clear indication information is included in the second control information.

Specifically, it may be indicated by an explicit indication, that is, using 1 bit in the second control information, which may be 1 bit always included in the second control information (for example, downlink control information DCI), or may be a receiving device. Whether the 1 bit is included in the second control information is determined according to a configuration of the transmitting device.

Alternatively, the third indicator bit may be further used as the clear indication information itself. For example, when the third indication bit is 1, the receiving device may clear the nth transmission signal of the first transmission block corresponding to all CBGs indicated by the transmission indication information; when the third indication bit is 0, the receiving device will not clear The value of the nth transmission signal of any first transmission block, which is 0 or 1 is only an example, which is not limited in this embodiment of the present application.

As an optional embodiment, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the third indicator bit is used to indicate whether the received signal of the nth transmission includes not used. The receiving device performs a decoded signal.

Specifically, the first indicator bit is the same as the third indicator bit. The transmitting device indicates a plurality of situations by indicating bits of the same bit. Taking the third indicator bit as an example, if the retransmission mode of the first transport block is the TB retransmission mode, the third indicator bit is used to indicate whether the affected signal is included in the received signal of the nth transmission. In a case that the retransmission mode of the first transport block is the CBG retransmission mode, the third indicator bit is used to indicate whether the clear indication information is included in the second control information.

Optionally, in a case that the retransmission mode of the first transport block is a CBG retransmission mode, the third indication bit includes the foregoing clear indication information, where the third indication is used to indicate that the receiving device clears or does not clear the foregoing. Transmitting the nth transmission signal of the first transport block corresponding to all CBGs indicated by the indication information.

In an optional embodiment, in the case that the second control information includes the transmission indication information and the clear indication information, the number of bits included in the transmission indication information and the clear indication information is

Specifically, in a case where the second control information includes both the transmission indication information and the clear indication information, the transmitting device may jointly encode the transmission indication information and the clear indication information, which are collectively referred to as CBG indication information.

For example, N=2, coexisting due to both the CBG indicating the transmission and the CBG cleared in the transmitted CBG.

Medium state, as shown in the following table:

Table 5

Status number	Which CBGs are transmitted	Clear
0	0001	no
1	0010	no
2	0100	no
3	1000	no
4	0001	Yes
5	0010	Yes
6	0100	Yes
7	1000	Yes

For the above eight clear states, the number of bits required for CBG indication information (both indicating which CBGs are transmitted and which CBGs are cleared) is

When N=3, there is

State, the number of bits required for CBG indication information is

When N=4, there is

State, the number of bits required for CBG indication information is

It should be understood that, in the case that the foregoing second control information includes both the transmission indication information and the clear indication information, the joint coding mode can greatly reduce the number of bits indicated by the sending device, and effectively reduce the signaling overhead. The manner of the above joint coding is related to the number N of CBGs included in the first transport block. To avoid repetition, it is not enumerated here.

It should also be understood that, in the TB retransmission mode, the CBG retransmission mode, or other retransmission modes that may occur in the future, as long as the second information includes the above two types of information, the above joint coding may be used. The manner of the present invention is not limited thereto.

As an optional embodiment, if the first transport block adopts a CBG retransmission mode, at least part of the CBG indication information (the collective name of the transmission indication information and/or the clear indication information) field is by reusing other fields. Bits obtained, such as MCS field, RV field, etc. Therefore, the CBG indication field contains information from 2 parts, some of which are dedicated and the other part reuses other fields.

Optionally, if the CBG indication information only indicates which CBGs are transmitted, a dedicated field is used; if the CBG indication information indicates which CBGs are transmitted and which CBGs are cleared, a dedicated field, or a dedicated field and a reuse field are used. For example, the dedicated field contains 4 bits, and if both the transmission and the indication are cleared, the bits other than 4 bits are from the reused field.

Optionally, if the CBG indication information only indicates which CBGs are transmitted, the bit bitmap bitmap indication method is adopted; if the CBG indication information indicates both which CBGs are transmitted and which CBGs are cleared, the bitmap indication method or the joint coding method is adopted.

It should be understood that, for the case where the CBG indication information only indicates which CBGs are transmitted, the number of bits is not increased compared with the joint coding, and the method of using the bitmap indication is clear; for the CBG indication information, it is indicated which CBGs are transmitted and which CBGs are cleared. In the case of joint coding, the number of bits is smaller than that of the bitmap, and the bit overhead can be effectively reduced.

As an optional embodiment, if the first transport block adopts the TB retransmission mode, the CBG indication information (the collective name of the transmission indication information and/or the clear indication information) all comes from the bits that reuse other fields.

As an alternative embodiment, since the number of CBGs indicating transmission and/or clearing in the CBG indication information is variable, the length of the reused field is also variable accordingly. And the meaning of the indicated field is different depending on the number of bits that the field contains. It should be understood that the meaning of the re-used field may be configured by the sending device to the receiving device through RRC, MAC or physical layer signaling, but the embodiment of the present application does not limit this.

For ease of understanding, the following description is made by taking the number of CBGs included in the first transport block as 4, and the CBG indication field is reused in addition to the dedicated bits as the MCS field. The CBG dedicated field is 3, and the MCS field is 6 bits long. For different situations, there are:

(1) The CBG indication information indicates only which CBGs are transmitted, using the bitmap indication mode, the CBG indication field requires 4 bits (where 1 bit reuses the MCS field), then the MCS field contains 5 bits;

(2) The CBG indication information indicates which CBGs are transmitted and indicates which CBGs are cleared. In the indication mode of joint coding, the CBG indication field needs 7 bits (where 4 bits reuse the MCS field), then the MCS field is at least 2 Bit.

When the MCS is 5 bits, at least 4 bits are used to indicate the retransmission modulation mode; when the MCS is 2 bits, the 2 bits are all used to indicate the retransmission modulation mode, and the specific indication content of the retransmission modulation mode is used. It can be configured, for example, by two bits indicating quadrature phase shift keying (QPSK), 16 quadrature amplitude modulation (QAM), 64QAM, and 256QAM, or by 2-bit indication. There are four cases of QPSK, 64QAM, 256QAM and 1024QAM, or two cases of pi/2-BPSK, QPSK, 16QAM, etc.; when the MCS is 1 bit, this bit 0 indicates that the modulation of the last transmission is reused. In this way, a bit of 1 indicates that QPSK modulation is used. It should be understood that the above implementation manner is merely exemplary, and the embodiment of the present application is not limited thereto.

It should be understood that the size of the sequence numbers of the above-mentioned processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present application.

The data transmission method according to the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 2, and the data transmission apparatus according to the embodiment of the present application will be described in detail below with reference to FIG. 3 and FIG.

FIG. 3 shows a data transmission device 300 provided by an embodiment of the present application. The device 300 includes:

The first sending unit 310 is configured to send first control information to the receiving device, where the first control information is used to indicate whether the first transport block is transmitted by using the coded block group CBG retransmission mode;

The second sending unit 320 is configured to send second control information to the receiving device, where the second control information is used to instruct the receiving device to receive the n+kth transmission signal of the first transport block, where And k are integers greater than or equal to 1.

Optionally, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate whether the received signal of the nth transmission of the first transport block is included. A signal that is not used for decoding by the receiving device.

Optionally, the second control information includes a first indication bit, where the first indication bit is used to indicate whether a signal not used by the receiving device for decoding is included in the received signal of the nth transmission.

Optionally, if the received signal of the nth transmission includes a signal that is not used by the receiving device for decoding, the second control information further includes clear indication information, where the clear indication information is used. And indicating, in the received signal of the nth transmission, each of the P CBGs that are not used by the receiving device to perform decoding, where the first transport block includes N CBGs, and the N CBGs include the P Each CBG, P and N are integers greater than or equal to 1, and P is less than or equal to N.

Optionally, the signal of the n+kth transmission is M CBGs of the N CBGs, and the M CBGs include the P CBGs, and the second control information further includes transmission indication information. And the transmission indication information is used to indicate each CBG of the M CBGs, where M is an integer greater than or equal to 1, and P≤M<N.

Optionally, the clear indication information and the transmission indication information are the same information, and P is equal to M.

Optionally, when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate whether the second control information includes transmission indication information, where the transmission The indication information is used to indicate each of the C CBGs of the n+k transmissions, the first transport block includes N CBGs, the N CBGs include the M CBGs, and M and N are An integer greater than or equal to 1, and M is less than N.

Optionally, the second control information includes a second indication bit, where the second indication bit is used to indicate whether the transmission indication information is included in the second control information.

Optionally, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indicator bit is used to indicate whether the received signal of the nth transmission includes not used by the receiving device. The signal to be decoded.

Optionally, in the case that M is equal to N, the second control information does not include the transmission indication information.

Optionally, in the case that the second indication information includes the transmission indication information, the number of bits included in the transmission indication information is related to at least one of: the first transmission block includes The number N of CBGs and the number M of CBGs transmitted in the n+kth time.

Optionally, the number of bits included in the transmission indication information is

Wherein said

a number M of CBGs for indicating the n+kth transmission,

Used to indicate each of the M CBGs of the n+kth transmission.

Optionally, the second control information is further used to indicate whether the second control information includes clear indication information, where the clear indication information is used to indicate that the received signal of the nth transmission is not used for the receiving Each CBG of the P CBGs that the device performs decoding, the M CBGs include the P CBGs, P is an integer greater than or equal to 1, and P is less than or equal to M.

Optionally, the second control information includes a third indication bit, where the third indication bit is used to indicate whether the clear indication information is included in the second control information.

Optionally, in the case that the second control information includes the transmission indication information and the clear indication information, the number of bits included in the transmission indication information and the clear indication information is

It should be understood that the apparatus 300 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group) for executing one or more software or firmware programs. Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality. In an optional example, those skilled in the art may understand that the device 300 may be specifically the sending device in the foregoing embodiment, and the device 300 may be used to perform various processes and/or steps corresponding to the sending device in the foregoing method embodiment. To avoid repetition, we will not repeat them here.

FIG. 4 shows another data transmission device 400 provided by an embodiment of the present application. The device 400 includes:

The first receiving unit 410 is configured to receive first control information that is sent by the sending device, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode;

a second receiving unit 420, configured to receive second control information sent by the sending device, where the second control information is used to instruct the device to receive a signal of the n+thth transmission of the first transport block, where And k are integers greater than or equal to 1;

The third receiving unit 430 is configured to receive the signal of the n+thth transmission according to the first control information and the second control information.

Optionally, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate whether the received signal of the nth transmission of the first transport block is included. A signal that is not used for decoding by the device.

Optionally, the second control information includes a first indication bit, where the first indication bit is used to indicate whether a signal not used by the apparatus for decoding is included in the received signal of the nth transmission.

Optionally, in a case that the received signal of the nth transmission includes a signal that is not used for decoding by the apparatus, the second control information further includes clear indication information, where the clear indication information is used to indicate The received signal of the nth transmission is not used for each CBG of the P CBGs that are decoded by the device, the first transport block includes N CBGs, and the N CBGs include the P CBGs. , P and N are integers greater than or equal to 1, and P is less than or equal to N.

Optionally, the signal of the n+kth transmission is M CBGs of the N CBGs, and the M CBGs include the P CBGs, and the second control information further includes transmission indication information. And the transmission indication information is used to indicate each CBG of the M CBGs, where M is an integer greater than or equal to 1, and P≤M<N.

Optionally, the clear indication information and the transmission indication information are the same information, and P is equal to M.

Optionally, when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate whether the second control information includes transmission indication information, where the transmission The indication information is used to indicate each of the C CBGs of the n+k transmissions, the first transport block includes N CBGs, the N CBGs include the M CBGs, and M and N are An integer greater than or equal to 1, and M is less than N.

Optionally, the second control information includes a second indication bit, where the second indication bit is used to indicate whether the transmission indication information is included in the second control information.

Optionally, when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indicator bit is used to indicate whether the received signal of the nth transmission includes not used by the apparatus. Decoded signal.

Optionally, in the case that M is equal to N, the second control information does not include the transmission indication information.

Optionally, in the case that the second indication information includes the transmission indication information, the number of bits included in the transmission indication information is related to at least one of: the first transmission block includes The number N of CBGs and the number M of CBGs transmitted in the n+kth time.

Optionally, the number of bits included in the transmission indication information is

Wherein said

a number M of CBGs for indicating the n+kth transmission,

Used to indicate each of the M CBGs of the n+kth transmission.

Optionally, the second control information is further used to indicate whether the second control information includes clear indication information, where the clear indication information is used to indicate that the received signal of the nth transmission is not used in the apparatus. Each of the P CBGs that are coded, the M CBGs include the P CBGs, P is an integer greater than or equal to 1, and P is less than or equal to M.

Optionally, the second control information includes a third indication bit, where the third indication bit is used to indicate whether the clear indication information is included in the second control information.

Optionally, in the case that the second control information includes the transmission indication information and the clear indication information, the number of bits included in the transmission indication information and the clear indication information is

It should be understood that the apparatus 400 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group) for executing one or more software or firmware programs. Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality. In an alternative example, those skilled in the art may understand that the device 400 may be specifically the receiving device in the foregoing embodiment, and the device 400 may be used to perform various processes and/or steps corresponding to the receiving device in the foregoing method embodiment. To avoid repetition, we will not repeat them here.

FIG. 5 shows another data transmission device 500 provided by an embodiment of the present application. The apparatus 500 includes a processor 510, a transceiver 520, and a memory 530. The processor 510, the transceiver 520, and the memory 530 communicate with each other through an internal connection path. The memory 530 is configured to store instructions, and the processor 510 is configured to execute instructions stored in the memory 530 to control the transceiver 520 to send signals and / or receive signals.

The transceiver 520 is configured to send, to the receiving device, first control information, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode;

The transceiver 520 is further configured to send second control information to the receiving device, where the second control information is used to instruct the receiving device to receive a signal of the n+thth transmission of the first transport block, n and k is an integer greater than or equal to 1.

It should be understood that the apparatus 500 may be specifically the transmitting apparatus in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the sending apparatus in the foregoing method embodiments. Optionally, the memory 530 can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory can also store information of the device type. The processor 510 can be configured to execute instructions stored in a memory, and when the processor 510 executes instructions stored in the memory, the processor 510 is configured to perform the various steps of the method embodiment corresponding to the transmitting device described above and/or Or process.

FIG. 6 shows another data transmission device 600 provided by an embodiment of the present application. The apparatus 600 includes a processor 610, a transceiver 620, and a memory 630. The processor 610, the transceiver 620, and the memory 630 are in communication with each other through an internal connection path. The memory 630 is configured to store instructions, and the processor 610 is configured to execute instructions stored in the memory 630 to control the transceiver 620 to send signals and / or receive signals.

The transceiver 620 is configured to receive first control information that is sent by the sending device, where the first control information is used to indicate whether the first transport block is transmitted in a coded block group CBG retransmission mode.

The transceiver 620 is further configured to receive second control information that is sent by the sending device, where the second control information is used to instruct the device to receive a signal of the n+thth transmission of the first transport block, n and k is an integer greater than or equal to 1;

The transceiver 620 is further configured to receive the signal of the n+thth transmission according to the first control information and the second control information.

It should be understood that the device 600 may be specifically the receiving device in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the receiving device in the foregoing method embodiment. Optionally, the memory 630 can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory can also store information of the device type. The processor 610 can be configured to execute instructions stored in a memory, and when the processor 610 executes instructions stored in the memory, the processor 610 is configured to perform the various steps of the method embodiment corresponding to the receiving device described above and/or Or process.

It should be understood that, in the embodiment of the present application, the processor of the foregoing apparatus may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits. (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software units in the processor. The software unit can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in a memory, and the processor executes instructions in the memory, in combination with hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

Those skilled in the art will appreciate that the various method steps and units described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the foregoing description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Different methods may be used to implement the described functionality for each particular application, but such implementation should not be considered to be beyond the scope of the application.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be in essence or part of the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed in the present application. Modifications or substitutions are intended to be included within the scope of the present application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims (40)

1. A data transmission method, comprising:

   The sending device sends, to the receiving device, first control information, where the first control information is used to indicate whether the first transport block is transmitted by using the coded block group CBG retransmission mode;

   Transmitting, by the sending device, second control information to the receiving device, where the second control information is used to indicate that the receiving device receives the n+kth transmission signal of the first transport block, where n and k are both An integer greater than or equal to 1.
2. The method according to claim 1, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate the first transmission block. Whether the signal that is not used for decoding by the receiving device is included in the received signal transmitted n times.
3. The method according to claim 2, wherein the second control information comprises a first indication bit, and the first indication bit is used to indicate whether the received signal of the nth transmission includes not used for the The signal that the receiving device performs decoding.
4. The method according to claim 2 or 3, wherein, in the case that the received signal of the nth transmission includes a signal that is not used for decoding by the receiving device, the second control information further includes And clearing indication information, where the clear indication information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission, where the first transport block includes N CBG, the N CBGs include the P CBGs, P and N are integers greater than or equal to 1, and P is less than or equal to N.
5. The method according to claim 4, wherein the signal of the n+kth transmission is M CBGs of the N CBGs, and the M CBGs comprise the P CBGs, The second control information further includes transmission indication information, where the transmission indication information is used to indicate each CBG of the M CBGs, M is an integer greater than or equal to 1, and P≤M<N.
6. The method according to any one of claims 1 to 5, wherein when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate Whether the second indication information includes transmission indication information, where the transmission indication information is used to indicate each of the M CBGs of the n+k transmissions, the first transport block includes N CBGs, N CBGs include the M CBGs, M and N are integers greater than or equal to 1, and M is less than N.
7. The method according to claim 6, wherein the second control information comprises a second indication bit, and the second indication bit is used to indicate whether the transmission indication information is included in the second control information.
8. The method according to claim 7, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indication bit is used to indicate a received signal of the nth transmission. Whether or not a signal not used for decoding by the receiving device is included.
9. The method according to any one of claims 6 to 8, wherein, in the case where M is equal to N, the second control information does not include the transmission indication information.
10. The method according to any one of claims 6 to 9, wherein the second control information is further configured to indicate whether the second indication information includes clear indication information, and the clear indication information is used to indicate The received signal of the nth transmission is not used for each CBG of the P CBGs that are decoded by the receiving device, the M CBGs include the P CBGs, and P is an integer greater than or equal to 1. And P is less than or equal to M.
11. A data transmission method, comprising:

    Receiving, by the receiving device, first control information sent by the sending device, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode;

    The receiving device receives the second control information sent by the sending device, where the second control information is used to instruct the receiving device to receive the n+kth transmission signal of the first transport block, where n and k are both An integer greater than or equal to 1;

    The receiving device receives the signal of the n+thth transmission according to the first control information and the second control information.
12. The method according to claim 11, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate the first transmission block. Whether the signal that is not used for decoding by the receiving device is included in the received signal transmitted n times.
13. The method according to claim 12, wherein the second control information comprises a first indication bit, and the first indication bit is used to indicate whether the received signal of the nth transmission includes not used for the The signal that the receiving device performs decoding.
14. The method according to claim 12 or 13, wherein in the case that the received signal of the nth transmission includes a signal not used for decoding by the receiving device, the second control information further includes And clearing indication information, where the clear indication information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission, where the first transport block includes N CBG, the N CBGs include the P CBGs, P and N are integers greater than or equal to 1, and P is less than or equal to N.
15. The method according to claim 14, wherein the signal of the n+kth transmission is M CBGs of the N CBGs, and the M CBGs comprise the P CBGs, The second control information further includes transmission indication information, where the transmission indication information is used to indicate each CBG of the M CBGs, M is an integer greater than or equal to 1, and P≤M<N.
16. The method according to any one of claims 11 to 15, wherein when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate Whether the second indication information includes transmission indication information, where the transmission indication information is used to indicate each of the M CBGs of the n+k transmissions, the first transport block includes N CBGs, N CBGs include the M CBGs, M and N are integers greater than or equal to 1, and M is less than N.
17. The method according to claim 16, wherein the second control information comprises a second indication bit, and the second indication bit is used to indicate whether the transmission indication information is included in the second control information.
18. The method according to claim 17, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indication bit is used to indicate a received signal of the nth transmission. Whether or not a signal not used for decoding by the receiving device is included.
19. The method according to any one of claims 16 to 18, wherein, in the case where M is equal to N, the second control information does not include the transmission indication information.
20. The method according to any one of claims 16 to 19, wherein the second control information is further configured to indicate whether the second control information includes clear indication information, and the clear indication information is used to indicate The received signal of the nth transmission is not used for each CBG of the P CBGs that are decoded by the receiving device, the M CBGs include the P CBGs, and P is an integer greater than or equal to 1. And P is less than or equal to M.
21. A data transmission device, comprising:

    a first sending unit, configured to send, to the receiving device, first control information, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode;

    a second sending unit, configured to send second control information to the receiving device, where the second control information is used to instruct the receiving device to receive the n+kth transmission signal of the first transport block, n and k is an integer greater than or equal to 1.
22. The apparatus according to claim 21, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate the first transmission block. Whether the signal that is not used for decoding by the receiving device is included in the received signal transmitted n times.
23. The apparatus according to claim 22, wherein the second control information comprises a first indication bit, and the first indication bit is used to indicate whether the received signal of the nth transmission includes not used for the The signal that the receiving device performs decoding.
24. The apparatus according to claim 22 or 23, wherein, in the case that the received signal of the nth transmission includes a signal not used for decoding by the receiving device, the second control information further includes And clearing indication information, where the clear indication information is used to indicate each of the P CBGs that are not used by the receiving device for decoding in the received signal of the nth transmission, where the first transport block includes N CBG, the N CBGs include the P CBGs, P and N are integers greater than or equal to 1, and P is less than or equal to N.
25. The apparatus according to claim 24, wherein the signal of the n+thth transmission is M CBGs of the N CBGs, and the M CBGs comprise the P CBGs, The second control information further includes transmission indication information, where the transmission indication information is used to indicate each CBG of the M CBGs, M is an integer greater than or equal to 1, and P≤M<N.
26. The apparatus according to any one of claims 21 to 25, wherein when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate Whether the second indication information includes transmission indication information, where the transmission indication information is used to indicate each of the M CBGs of the n+k transmissions, the first transport block includes N CBGs, N CBGs include the M CBGs, M and N are integers greater than or equal to 1, and M is less than N.
27. The apparatus according to claim 26, wherein the second control information comprises a second indication bit, and the second indication bit is used to indicate whether the transmission indication information is included in the second control information.
28. The apparatus according to claim 27, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indication bit is used to indicate a received signal of the nth transmission Whether or not a signal not used for decoding by the receiving device is included.
29. The apparatus according to any one of claims 26 to 28, wherein, in the case where M is equal to N, the second control information does not include the transmission indication information.
30. The device according to any one of claims 26 to 29, wherein the second control information is further configured to indicate whether the second control information includes clear indication information, and the clear indication information is used to indicate The received signal of the nth transmission is not used for each CBG of the P CBGs that are decoded by the receiving device, the M CBGs include the P CBGs, and P is an integer greater than or equal to 1. And P is less than or equal to M.
31. A data transmission device, comprising:

    a first receiving unit, configured to receive first control information sent by the sending device, where the first control information is used to indicate whether the first transport block is transmitted by using a coded block group CBG retransmission mode;

    a second receiving unit, configured to receive second control information sent by the sending device, where the second control information is used to instruct the device to receive a signal of the n+thth transmission of the first transport block, n and k is an integer greater than or equal to 1;

    And a third receiving unit, configured to receive, according to the first control information and the second control information, the signal transmitted by the n+kth time.
32. The apparatus according to claim 31, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second control information is further used to indicate the first transmission block. Whether the signal not used for decoding by the device is included in the received signal transmitted n times.
33. The apparatus according to claim 32, wherein the second control information comprises a first indication bit, and the first indication bit is used to indicate whether the received signal of the nth transmission includes not used for the The signal that the device performs decoding.
34. The apparatus according to claim 32 or 33, wherein, in the case where the received signal of the nth transmission includes a signal not used for decoding by the apparatus, the second control information further includes clearing Instructing information, the clearing indication information is used to indicate each of the P CBGs that are not used by the device for decoding in the received signal of the nth transmission, where the first transport block includes N CBGs, The N CBGs include the P CBGs, P and N are integers greater than or equal to 1, and P is less than or equal to N.
35. The apparatus according to claim 34, wherein the n+kth transmitted signal is M CBGs of the N CBGs, and the M CBGs comprise the P CBGs, The second control information further includes transmission indication information, where the transmission indication information is used to indicate each CBG of the M CBGs, M is an integer greater than or equal to 1, and P≤M<N.
36. The apparatus according to any one of claims 31 to 35, wherein when the retransmission mode of the first transport block is the CBG retransmission mode, the second control information is further used to indicate Whether the second indication information includes transmission indication information, where the transmission indication information is used to indicate each of the M CBGs of the n+k transmissions, the first transport block includes N CBGs, N CBGs include the M CBGs, M and N are integers greater than or equal to 1, and M is less than N.
37. The apparatus according to claim 36, wherein the second control information comprises a second indication bit, and the second indication bit is used to indicate whether the transmission indication information is included in the second control information.
38. The apparatus according to claim 37, wherein when the retransmission mode of the first transport block is a non-CBG retransmission mode, the second indication bit is used to indicate a received signal of the nth transmission Whether or not signals that are not used for decoding by the device are included.
39. The apparatus according to any one of claims 36 to 38, wherein, in the case where M is equal to N, the second control information does not include the transmission indication information.
40. The apparatus according to any one of claims 36 to 39, wherein the second control information is further configured to indicate whether the second control information includes clear indication information, and the clear indication information is used to indicate The received signal of the nth transmission is not used for each CBG of the P CBGs that are decoded by the apparatus, the M CBGs include the P CBGs, and P is an integer greater than or equal to 1, and P is less than or equal to M.

Images