CN111147182B

CN111147182B - Communication method and device

Info

Publication number: CN111147182B
Application number: CN201811303166.5A
Authority: CN
Inventors: 冯淑兰; 武雨春; 张玉伦; 黄海宁
Original assignee: Huawei Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2018-11-02
Filing date: 2018-11-02
Publication date: 2021-06-04
Anticipated expiration: 2038-11-02
Also published as: CN111147182A

Abstract

The application discloses a communication method and device. The method comprises the following steps: determining a first CBG number according to the time domain characteristics of a Physical Downlink Shared Channel (PDSCH); determining the size of a feedback signaling of a transport block TB (transport block) carried in a physical downlink shared channel according to the first CBG number; determining the feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel; and sending the feedback signaling. A corresponding apparatus is also disclosed. By adopting the scheme of the application, the number of CBGs for generating the feedback signaling can be flexibly determined according to the time domain characteristics of the PDSCH, so that the size of the feedback signaling can be reduced, and the transmission efficiency of the system can be improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

In a wireless communication system, a hybrid automatic repeat request (HARQ) technique is usually adopted by both a transceiver and a transmitter to ensure the correctness of data transmission. This technique combines Forward Error Correction (FEC) with automatic repeat request (ARQ). After a data block (generally referred to as a Transport Block (TB)) is encoded, information bits and a part of redundancy bits are transmitted at the first transmission. If the receiving end can decode correctly, an Acknowledgement (ACK) signal is fed back to the sending end, and the sending end confirms that the corresponding information bit is received successfully, and considers that the TB is transmitted successfully. If the receiving end can not decode correctly, feeding back non-acknowledgement (NACK) to the sending end. After receiving the NACK, the transmitting end further transmits a part of information bits and/or redundant bits to the transmitting end, which is called retransmission data. And after receiving the retransmission data, the receiving end combines the retransmission data with the previously received data and then decodes the retransmission data. If the redundant bit added with retransmission still can not be decoded normally, retransmission is carried out again. With the increase of retransmission times, redundant bits are accumulated continuously, and the channel coding rate is reduced continuously, so that a better decoding effect can be obtained.

As shown in the diagram of TB division in fig. 1, if the TB is relatively large, one TB is usually divided into a plurality of Code Blocks (CBs). Each CB is coded separately. And a plurality of coded CBs are processed by rate matching, interleaving, cascading and the like and then serve as a physical data block to be transmitted to a receiving end. To further improve the efficiency of transmission, a plurality of CBs are grouped into a group, called a Code Block Group (CBG).

At the receiving end, a feedback signal ACK/NACK is generated for whether each CBG is correctly received. If there are N CBGs, an N-bit feedback signal is generated. Each bit indicates whether the CBG was received correctly. After the feedback signal of N bits is received, if it is detected that a certain CBG is not correctly received, only the data of the CBG needs to be retransmitted, and the CBG which is correctly received does not need to be retransmitted, so that the transmission efficiency of the system is improved.

Whether TB communicated on a cell is divided into a plurality of CBGs or not and after the division into a plurality of CBGs is determined by a network, the terminal equipment is informed through high-level signaling configured by the network. One of the maximum configurations of CBGs is 8. When one TB requires 8 bits of feedback signaling.

In addition, ACK/NACK signaling for multiple TBs is usually fed back in one slot, and these feedback signaling forms a feedback signaling codebook. The size of the feedback signaling codebook is determined by the number of TBs that need to be fed back in the codebook and the number of CBGs per TB. The TB required to be fed back in a feedback signaling codebook is determined according to the number of transmission carriers of data to be fed back on the carrier and the number of TBs required to be fed back by each carrier. For example, each slot has at most 7 TBs, and a feedback signaling codebook has at most 8 TBs of different slots, data of one Component Carrier (CC) needs to be fed back with feedback signaling of 7 × 8 — 56 TBs in one feedback signaling codebook. If there are 8 CBGs per TB, the signaling that needs to be fed back is 56 × 8 — 448 bits. Further, a feedback signaling codebook includes a plurality of CCs, for example, 4 CCs, and a feedback signaling codebook includes 448 × 4 — 1792 bits.

According to the above calculation, one feedback signaling codebook contains up to 1792 bits. And if the feedback signaling is larger than a certain value, for example, larger than 360 bits, the blocking is performed, for example, the blocking needs to be divided into 2 code blocks. Too much feedback signaling is transmitted, which also increases the redundancy of the system, resulting in a decrease in system efficiency. Meanwhile, the number of code blocks needing to be transmitted is increased due to the blocking, and the coding complexity of equipment for sending the feedback signaling and the decoding complexity of equipment for receiving the feedback signaling are increased.

Disclosure of Invention

The application provides a communication method and device to reduce the number of bits fed back in the data transmission process.

In a first aspect, a communication method is provided, including: determining a first CBG number according to the time domain characteristics of a Physical Downlink Shared Channel (PDSCH); determining the size of a feedback signaling of a transport block TB (transport block) carried in a physical downlink shared channel according to the first CBG number; determining the feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel; and sending the feedback signaling.

In this aspect, the number of CBGs used to generate the feedback signaling may be flexibly determined according to the time domain characteristics of the PDSCH, so that the size of the feedback signaling may be reduced, and the system transmission efficiency may be improved.

In one possible implementation, determining the first CBG number according to the time domain characteristic of the PDSCH includes: determining a second CBG number according to the time domain characteristics of the PDSCH; and determining the first CBG number according to the second CBG number.

In another possible implementation manner, determining the first CBG number according to the second CBG number includes: and determining a first CBG number according to the second CBG number, wherein the first CBG number is equal to the second CBG number.

In another possible implementation manner, determining the first CBG number according to the second CBG number includes: and determining a first CBG number according to the second CBG number and a third CBG number, wherein the first CBG number is the smaller value of the second CBG number and the third CBG number, and the third CBG number is a parameter of network configuration.

In this implementation manner, the first CBG number is taken as the smaller value of the second CBG number and the third CBG number, which can reduce the size of the feedback signaling and improve the transmission efficiency.

In another possible implementation manner, determining the first CBG number according to the second CBG number includes: and determining a first CBG number according to the type of the feedback codebook.

In another possible implementation manner, determining a first CBG number according to a feedback codebook type includes: for a first type feedback codebook, the first CBG number is equal to the second CBG number, or the first CBG number is the smaller of the second CBG number and a third CBG number, where the third CBG number is a parameter of network configuration; for a second type feedback codebook, the first number of CBGs is equal to the second number of CBGs, or the first number of CBGs is equal to the third number of CBGs.

In this implementation, the first CBG number is determined in different manners for the first type codebook and the second type codebook, respectively, which may increase more flexibility.

In another possible implementation manner, the determining a second CBG number according to the time domain characteristic of the PDSCH includes: determining a first time domain resource number according to the time domain characteristics of the PDSCH; and determining a second CBG number according to the first time domain resource number.

In another possible implementation manner, the second CBG number is determined according to the first time domain resource number M, where the first time domain resource number M and the second CBG number satisfy any one of the following formulas:

or

Or

Or

Or

Wherein the content of the first and second substances,

in order to be the fourth CBG parameter,

is the fifth CBG parameter.

In another possible implementation manner, the determining the number of the second CBGs according to the first number M of time domain resources includes: and determining a second CBG number according to the mapping relation between the first time domain resource number M and the CBG number.

In another possible implementation manner, the determining the second CBG number according to the time domain characteristic of the PDSCH includes: and determining a second CBG number according to the mapping type of the PDSCH.

In another possible implementation manner, the determining a second CBG number according to the mapping type of the PDSCH includes: when the mapping type of the PDSCH is type A, determining a second CBG number as the third CBG number; and when the mapping type of the PDSCH is type B, determining that the second CBG number is a fifth CBG number.

In another possible implementation manner, the method further includes: and determining the number of CBGs in the TB carried in the PDSCH according to the first CBG number.

In another possible implementation manner, the sending the feedback signaling includes: and sending the feedback signaling in a mode of multiplexing transmission with a PUSCH.

In another possible implementation manner, the determining the second CBG number according to the time domain characteristic of the PDSCH includes: and determining a second CBG number according to the time domain symbol number occupied by the PDSCH.

In another possible implementation manner, the determining the second CBG number according to the time domain characteristic of the PDSCH includes: and determining the number of PDSCH time domain symbols and the number of third CBGs according to the time domain characteristics of the PDSCH, and determining the number of the second CBGs, wherein the third CBG is a parameter configured by the network equipment.

In yet another possible implementation manner, a second CBG number is determined according to a time domain characteristic of the PDSCH, where the second CBG number satisfies any one of the following formulas:

or

Or

Or

Or

Or

Or

Wherein the content of the first and second substances,

for the purpose of said first number of CBGs,

for the said second number of CBGs,

for the third number of CBGs to be used,

is the fourth CBG parameter. L is the number of time domain symbols of the PDSCH, S is the number of symbols contained in one time slot, and n is the total time domain slot number of the PDSCH. In another possible implementation manner, the determining the number of second CBGs according to the time domain characteristic of the PDSCH includes: and determining the second CBG number according to the mapping relation between the number of the PDSCH time domain symbols and the CBG number.

In a second aspect, a communication method is provided, including: determining a value of a parameter for calculating the size of a feedback signaling of a transmission block carried in a physical downlink shared channel; and sending the value of the parameter for calculating the size of the feedback signaling of the transmission block carried in the physical downlink shared channel to the terminal equipment.

In this aspect, by sending a value of a parameter for calculating the size of a feedback signaling of a transport block carried in a physical downlink shared channel to a terminal device, the size of a feedback signaling codebook determined by the terminal device according to the parameter does not exceed a threshold, so that the size of the feedback signaling can be reduced, and the transmission efficiency of the system can be improved.

In a possible implementation manner, the determining a value of a parameter used for calculating a size of a feedback signaling of a transport block carried in a physical downlink shared channel includes: and determining a value of a parameter for calculating the size of the feedback signaling of the transmission block carried in the physical downlink shared channel so as to enable the feedback signaling codebook to be smaller than or equal to a threshold value.

In a third aspect, a communication method is provided, including: determining the size of a feedback signaling of a transport block TB (transport block) carried in a physical downlink shared channel; determining the feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel; and sending the feedback signaling.

In this aspect, by adjusting the value of the parameter for calculating the size of the feedback signaling of the transport block carried in the physical downlink shared channel, the size of the feedback signaling codebook determined by the terminal device according to the parameter does not exceed the threshold, so that the size of the feedback signaling can be reduced, and the transmission efficiency of the system can be improved.

In one possible implementation manner, the method further includes: receiving a value of a parameter sent by a network device and used for calculating the size of a feedback signaling of a transmission block carried in a physical downlink shared channel; the determining the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel includes: and determining the size of a feedback signaling of a transport block TB carried in the physical downlink shared channel according to the value of the parameter so as to enable the feedback signaling codebook to be smaller than or equal to a threshold value.

In another possible implementation manner, the method further includes: receiving a value of a parameter sent by a network device and used for calculating the size of a feedback signaling of a transmission block carried in a physical downlink shared channel; the determining the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel includes: determining the size of a feedback signaling of a transport block TB (transport block) carried in a physical downlink shared channel according to the value of the parameter; and when the feedback signaling codebook exceeds a threshold value, determining that the feedback signaling codebook is invalid, or the feedback signaling codebook feeds back NACK, or does not feed back any feedback.

In a fourth aspect, a communication apparatus is provided, which may implement the communication method of the first aspect or the third aspect. For example, the communication device may be a chip (such as a communication chip) or a terminal device. The above-described method may be implemented by software, hardware, or by executing corresponding software by hardware.

In one possible implementation, the communication device has a structure including a processor, a memory; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method. The memory is used for coupling with the processor, which holds the necessary programs (instructions) and/or data for the device. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication device may include a unit module that performs corresponding actions in the above method.

In yet another possible implementation, the wireless communication device includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is further configured to implement the above-described method when the processor executes the computer program or instructions. The transceiver may be a transceiver, a transceiver circuit, or an input/output interface. When the communication device is a chip, the transceiver is a transceiver or an input/output interface.

In yet another possible implementation, the communication device has a structure including a processor; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method.

In yet another possible implementation manner, the communication device includes a processor in a structure, and the processor is configured to couple with the memory, read the instructions in the memory, and implement the above method according to the instructions.

In yet another possible implementation manner, the structure of the communication device includes a transceiver for implementing the above communication method.

When the communication device is a chip, the transceiver unit may be an input/output unit, such as an input/output circuit or a communication interface. When the communication device is a user equipment, the transceiving unit may be a transmitter/receiver or a transmitter/receiver.

In a fifth aspect, a communication apparatus is provided, which can implement the communication method in the second aspect. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a network device, and the above method may be implemented by software, hardware, or by executing corresponding software by hardware.

In one possible implementation, the communication device has a structure including a processor, a memory; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method. The memory is used for coupling with the processor and holds the programs (instructions) and data necessary for the device. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication device may include a unit module for performing corresponding actions in the above method.

When the communication device is a chip, the transceiver unit may be an input/output unit, such as an input/output circuit or a communication interface. When the communication apparatus is a network device, the transceiving unit may be a transmitter/receiver (may also be referred to as a transmitter/receiver).

In a sixth aspect, a computer-readable storage medium is provided, having stored thereon a computer program or instructions, which, when executed, implement the method of the above aspects.

In a seventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

FIG. 1 is a schematic diagram of TB partitioning;

fig. 2 is a schematic diagram of a communication system to which the present application relates;

fig. 3 is a flowchart illustrating a communication method according to an embodiment of the present application;

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

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

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a simplified network device according to an embodiment of the present application.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

Fig. 2 presents a schematic view of a communication system to which the present application relates. The communication system may include one or more network devices 100 (only 1 shown) and one or more terminal devices 200 connected to the network devices 100.

The network device 100 may be a device capable of communicating with the terminal device 200. The network device 100 may be any device having a wireless transceiving function. Including but not limited to: a base station (NodeB), an evolved node b (eNodeB), a base station in the fifth generation (5G) communication system, a base station or network device in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the like. The network device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device 100 may also be a small station, a Transmission Reference Point (TRP), or the like. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

The terminal device 200 is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, hand-held, worn or vehicle-mounted; can also be deployed on the water surface, such as a ship and the like; and may also be deployed in the air, such as airplanes, balloons, satellites, and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. A terminal device may also sometimes be referred to as a User Equipment (UE), an access terminal device, a UE unit, a mobile station, a remote terminal device, a mobile device, a terminal (terminal), a wireless communication device, a UE agent, a UE device, or the like.

It should be noted that the terms "system" and "network" in the embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

The application provides a communication method and device, which can flexibly determine the number of CBGs for generating feedback signaling according to the time domain characteristics of a PDSCH, thereby reducing the size of the feedback signaling and improving the transmission efficiency of a system.

Fig. 3 is a flowchart illustrating a communication method according to an embodiment of the present application. The method may comprise the steps of:

s101, determining a first CBG number according to the time domain characteristics of a Physical Downlink Shared Channel (PDSCH).

The size of the feedback signaling for one TB is related to the number of CBGs. In the prior art, the network sends a parameter for generating the maximum number of CBGs of the ACK/NACK feedback signaling code block, which is called a third CBG number, and in the prior art, the size of the feedback signaling of one TB is determined according to the third CBG number. The network informs the UE of the third CBG number by high layer signaling, which is a maximum of 8. If the third CBG number is 8, it means that one TB requires 8 bits of feedback signaling.

In downlink communication, a TB is carried on a Physical Downlink Shared Channel (PDSCH) for transmission. The number of symbols occupied by the PDSCH carrying the TBs may be different (some TBs are large, the number of occupied symbols is large, and some TBs are small, the number of occupied symbols is small); the length and starting position of the symbols occupied by the PDSCH carrying the TB may be different. Therefore, the number of TBs that can be carried in one slot is related to the time domain characteristics of the PDSCH carrying the TBs. If the shortest symbol number of one PDSCH is 2, there may be 7 PDSCHs in a slot at most, and each PDSCH may carry 1-2 TBs. ACK/NACK signaling for multiple TBs is typically fed back in one slot, and these feedback signaling constitute a feedback signaling codebook. The size of the feedback signaling codebook is determined by factors such as data of several time slots to be fed back in the codebook, the number of PDSCHs contained in each time slot, the number of TBs contained in each PDSCH, the number of CBGs corresponding to each TB and used for generating feedback signaling, and the number of carriers to be fed back contained in one codebook. If one slot contains too many PDSCHs, the feedback codebook is multiplied. On the other hand, since each TB is different in size, dividing the TB by the number of CBGs configured by the network fixedly may cause that there are multiple CBGs for a small TB, and the same number of bits as the large TB are needed for feedback, thereby increasing redundancy of the system. The time domain characteristics of the PDSCH include relevant parameter settings in the time domain of the PDSCH, including a time domain resource allocation manner of the PDSCH, a symbol length in the time domain of the PDSCH and a starting position in the time domain, a mapping type of the PDSCH, a bearer timeslot of the PDSCH, and the like. In this application, we will refer to the number of maximum CBGs used to generate the feedback signaling as the first CBG number, or first maximum CBG number.

Time domain characteristics of PDSCH, including configuration and parameters related to the PDSCH time domain. For example, the configuration and parameters related to the PDSCH time domain may be represented by a time domain resource allocation table of the PDSCH. Table 1 below is a specific example of one PDSCH time domain resource allocation table. One time domain resource allocation table includes a plurality of rows, each row indicating time domain resource allocation parameters of the PDSCH with a row number (row index), including a mapping type of the PDSCH (PDSCH mapping type), a Start and Length Indicator Value (SLIV) identification of the PDSCH, and a slot offset K of the PDSCH₀And the position (DMRS position) of the demodulation reference signal of the PDSCH. Where SILV includes S and L, where S denotes a starting symbol of the PDSCH and L denotes a length of the scheduled PDSCH.

Table 1 PDSCH time domain resource allocation table example

The mapping type of the PDSCH includes a mapping type a and a mapping type B, which are used to define the starting position and length of the PDSCH. According to different types of cyclic prefixes cp (cyclic prefix), the values have different meanings, as shown in table 2 below. Where S denotes a starting symbol number of the PDSCH, and L denotes a length of the PDSCH. The types of the CP include a normal cyclic prefix (normal cyclic prefix) and an extended cyclic prefix (extended cyclic prefix).

TABLE 2

The time domain characteristics of the PDSCH may also include frame structure related parameters of the PDSCH. The parameters related to the frame structure of the PDSCH include the time slot length of the PDSCH, the length of the cyclic prefix CP of the PDSCH, the subcarrier spacing of the PDSCH, the number of symbols included in one time slot of the PDSCH, and the like.

And determining the first CBG number according to the time domain characteristics of the PDSCH. The first specific implementation method comprises the following steps: determining a second CBG number according to the time domain characteristics of the PDSCH

Determining the first CBG number according to the second CBG number

So that the first number of CBGs equals the second number of CBGs, i.e.

And determining the first CBG number according to the time domain characteristics of the PDSCH. The second specific implementation method comprises the following steps: determining a second CBG number according to the time domain characteristics of the PDSCH

According to the second CBG number and the third CBG number

Determining a first CBG number

So that the first CBG number is equal to the smaller value between the second CBG number and the third CBG number, i.e.

The third CBG number is a higher-level parameter configured by the network, for example, a higher-level parameter maxcodeblock group PerpsTransportBlock. This parameter is used to indicate the maximum CBG number of transport blocks TB in a cell, taking a natural number among 1-8.

Further, determining a first CBG number according to a time domain characteristic of the PDSCH, including determining the first CBG number according to a type of the feedback signaling codebook.

In one specific embodiment, for the first type feedback code block, the first CBG number is equal to the smaller of the second CBG number and the third CBG number, or the first CBG number is equal to the second CBG number, that is, the first CBG number is equal to the second CBG number

Or

For the second type of feedback codebook,

wherein the first CBG number is determined according to a type of the feedback signaling codebook.

The second specific embodiment is that, for the first type feedback codebook and the second type feedback codebook, the first CBG number is equal to the smaller value between the second CBG number and the third CBG number, or the first CBG number is equal to the second CBG number, that is

Or

The feedback codebook type is a high-level parameter pdsch-HARQ-ACK-codebook configured by the network. If the pdsch-HARQ-ACK-codebook is semi-static, the feedback codebook type is a first type feedback codebook type-1HARQ-ACK codebook; if pdsch-HARQ-ACK-codebook is dynamic, the feedback codebook type is a second type feedback codebook type-2HARQ-ACK codebook, also called dynamic HARQ-ACK codebook. The size of the feedback signaling of the first type codebook is determined according to the first CBG number, the number of PDSCHs contained in one time slot, the number of time slots of the PDSCHs needing to feed back several time slots in one feedback signaling codebook and the number of carriers formed by one feedback signaling codebook, and the size of the feedback signaling of the second type codebook is related to the first CBG number, the maximum HARQ process number needing to be fed back in one feedback signaling, the time slots of the PDSCHs needing to feed back several time slots in one feedback signaling codebook and the number of carriers formed by one feedback signaling codebook. The first CBG number is determined in different modes for the first type codebook and the second type codebook respectively, so that more flexibility can be increased.

Further, determining a first CBG number according to a time domain characteristic of the PDSCH, including determining the first CBG number according to a transmission mode of the bearer feedback signaling. Specifically, if the feedback signaling is transmitted on a Physical Uplink Control Channel (PUCCH), that is, the feedback signaling is sent in a mode of multiplexing transmission with a PUSCH, that is, the feedback signaling is carried on the PUSCH, the first CBG is equal to the third CBG; if the feedback signaling is transmitted on a Physical Uplink Shared Channel (PUSCH), the first CBG is equal to the second CBG, or the first CBG is equal to the smaller value between the second CBG and the third CBG. Because the processing resources used by the PUCCH and the PUSCH are different, the first CBG number is determined according to the transmission mode of the bearing feedback signaling, and more realization flexibility can be increased.

Determining a second CBG number according to the time domain characteristics of the PDSCH

One of the specific implementation modes is as follows:

-determining a first number M of time domain resources based on time domain characteristics of the PDSCH;

-determining a second number of CBGs based on the first number of time domain resources M.

The first embodiment of determining the first time domain resource number M according to the time domain characteristics of the PDSCH includes: m is determined according to the subcarrier spacing of the PDSCH. For example, when the subcarrier spacing of the PDSCH is 15kHz, M ═ 7; when the sub-carrier interval of the PDSCH is 30kHz, M is 4; when the sub-carrier of PDSCH will be 60kHz, M is 2; when the subcarrier spacing of the PDSCH is 120kHz, M is 1. Or determining M according to the subcarrier spacing of the PDSCH and the capability of the terminal device. For example, if the terminal device has the capability of receiving only one dedicated PDSCH for one time slot, then M is 1; if the terminal device is capable of receiving only two dedicated PDSCHs for one time slot, then M is 2. The number of received maximum PDSCHs that the terminal device can support at different subcarrier intervals may take different values according to the subcarrier intervals of the PDSCHs.

The second embodiment of determining the first time domain resource number M according to the time domain characteristic of the PDSCH includes: and calculating to obtain a first time domain resource number M, namely the number of the maximum PDSCH which can be scheduled in one time slot according to the time domain resource configuration table of the PDSCH. That is, the first CBG number is determined from the first time domain resource number M, which is the following set B, also referred to as the number of elements in the set B, and is expressed by the formula M ═ c (B). A specific determination manner of the set B can be seen in 3GPP ts38.213v f.3.0. The embodiments of the present application are briefly described as follows:

according to a PDSCH time domain resource allocation table (PDSCH-TimeDonResourceAllocationList) of a PDSCH-ConfigCommon of a high-level parameter, or a PDSCH time domain resource allocation table A of a default (default), or a PDSCH time domain resource allocation table (PDSCH-TimeDonResourceAllocationList) in the PDSCH-Config of the high-level parameter, and under the current configuration condition, a row index set R of the PDSCH time domain resource allocation table which can be used for scheduling the PDSCH is determined, and then a set B is determined according to the set R. Specifically, the method comprises the following steps:

firstly, time domain symbols corresponding to all SLIVs in the set R are judged, SLIVs of which corresponding symbols comprise uplink symbols are removed, and SLIVs corresponding to row indexes in the new set R obtained in the way are all available.

If the UE has the capability of receiving multiple PDSCHs in one time slot, a maximum value of receivable PDSCHs is determined according to the row index of the set R. For a certain time slot k, the specific method is as follows:

1. firstly, determining the minimum OFDM symbol in the last OFDM symbol in SLIV corresponding to all the row indexes of the set R, and marking as m;

2. note the book

Number of elements of set R, from

If the starting symbol in the SLIV corresponding to r is less than or equal to m, the position where the PDSCH or SPS PDSCH release may be received corresponding to the row index r is recorded as j, let b_r,kEquals j, and removes the row index R from the set R, b_r,kMerging into the set B;

3. traversing all the row indexes in the set R to obtain a plurality of b equal to j_r,kAnd removing the corresponding row index R from the set R, and a plurality of b_r,kMerging into the set B;

4. and obtaining a new set R, and re-determining the minimum one of the last OFDM symbols in the SLIV corresponding to all the row indexes of the new set R, and marking as m. The circulation is started again from the 2 nd step until the set R becomes an empty set;

5. the same value B in the set B is obtained_r,kThe UE does not expect to receive more than one PDSCH in the same time slot in the corresponding plurality of row indices corresponding to locations where PDSCH or SPS PDSCH release may be received.

Determining a second CBG number according to the first time domain resource number M, wherein a first specific implementation manner is as follows:

determining a second CBG number according to the first time domain resource number M, wherein a second specific implementation manner is as follows:

determining a second CBG number according to the first time domain resource number M, wherein a third specific implementation manner is as follows:

determining a second CBG number according to the first time domain resource number M, wherein a fourth specific implementation manner is as follows:

determining a second CBG number according to the first time domain resource number M, wherein a fifth specific implementation manner is as follows:

wherein the content of the first and second substances,

for the fourth CBG parameter, the value may be a constant, for example, the value may be 4 or 8.

For the fifth CBG parameter, the value may be a fixed constant, e.g., 1. In all of the formulae of the present application,

represents rounding up;

indicating a rounding down.

Determining a second CBG number according to the first time domain resource number M, wherein a sixth specific implementation manner is: and determining the second CBG number according to the mapping relation between the M and the CBG number. The mapping relationship is such that the larger M, the smaller the corresponding second CBG number. This mapping may be embodied in the form of a table, a specific example of which is shown in table 3 below.

TABLE 3 mapping tables of M and second CBG numbers

The second specific implementation manner is as follows:

and determining a second CBG number according to the symbol length L of the PDSCH time domain.

Determining a second CBG number according to the symbol length L of the PDSCH time domain

The first specific implementation method comprises the following steps:

The second specific implementation method comprises the following steps:

The third specific implementation method comprises the following steps:

The fourth specific implementation method comprises the following steps:

The fifth specific implementation method comprises the following steps:

wherein L is the number of OFDM symbols occupied by the PDSCH carrying the TB, S is the length of the OFDM symbol in one slot, or refers to the number of OFDM symbols included in one slot, n is the number of times that one PDSCH is repeated or aggregated, and n-1 indicates that the PDSCH is not repeated or aggregated.

The sixth specific implementation manner is as follows: and determining the second CBG number according to the mapping relation between the M and the CBG number. The mapping relationship is such that the larger L, the larger the corresponding second CBG number. This mapping may be embodied in the form of a table, two specific examples of which are shown in tables 4 and 5 below.

Example 1 of mapping table 4L and second CBG number

Example 1 of mapping tables for Table 5L and second CBG number

The third specific implementation manner is as follows:

determining the mapping type of the PDSCH according to the time domain characteristics of the PDSCH;

determining a second CBG number according to the type of the PDSCH.

Specifically, if the PDSCH is type a, the second CBG number is equal to the third CBG number; if the PDSCH is type B, the value of the first CBG number is the fifth CBG number, or CBG is not supported, or the value of the second CBG number is determined by the aforementioned method according to the PDSCH time domain symbol length, at this time, the value of the PDSCH time domain symbol length L may be 2,4,7 for the normal CP, or 2,4,6 for the extended CP.

And S102, determining the size of a feedback signaling of a transport block TB carried in a physical downlink shared channel according to the first CBG number.

For a TB, the size of the feedback signaling is equal to the first CBG number, i.e. one TB is used

Bits to feed back their ACK/NACK.

S103, determining the feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel.

Actual number of CBGs contained in one TB

According to the first CBG number

And the number C of actual code blocks CB of one TB, specifically:

according to what is contained in the received TB

And determining the ACK/NACK feedback signaling of the CBG according to the decoding condition of the CBG, wherein each CBG corresponds to the feedback signaling with 1 bit. If the receiving end successfully receives and decodes a certain CBG in the TB, feeding back ACK; and if the receiving end does not successfully receive and decode a certain CBG in the TB, feeding back NACK. If it is not

Less than the first CBG number

The remaining bits are filled with NACKs.

The feedback signaling of one or more TBs constitutes an ACK/NACK feedback signaling codebook.

And S104, sending the feedback signaling.

And sending a feedback signaling to a receiving end of the feedback signaling, wherein the size of one TB feedback signaling is the size of the feedback signaling determined above. An ACK/NACK feedback signaling codebook contains feedback signaling for all TBs that need to be fed back in the feedback signaling codebook.

According to the communication method provided by the embodiment of the application, the number of CBGs for generating the feedback signaling can be flexibly determined according to the time domain characteristics of the PDSCH, so that the size of the feedback signaling can be reduced, and the transmission efficiency of the system can be improved. For example, if a slot includes 7 PDSCHs, and each PDSCH is 2 symbols in length, according to the method of the present invention, at this time, each TB has at most 1 CBG, and the corresponding feedback bit number is 7(TB) × 1(CBG) × K1 × CC, where K1 is used to indicate the number of slots that need feedback in one feedback codebook, for example, K1 is 8, CC is the number of carriers, and taking 4CC as an example, the total bit number is 7 × 1 × 8 — 224. Compared with the original fixed 1792 bit, the overhead of the feedback signaling is greatly reduced, the transmission efficiency of the system is improved, meanwhile, the 224 bit feedback signaling does not need to be transmitted by being divided into two code blocks, and the coding complexity of the equipment for sending the feedback signaling and the decoding complexity of the equipment for receiving the feedback signaling are reduced.

Fig. 4 is a flowchart illustrating another communication method according to an embodiment of the present application. The method may comprise the steps of:

s201, determining a value of a parameter for calculating the size of a feedback signaling of a transport block carried in a physical downlink shared channel.

Generally, a plurality of feedback signaling fed back in one time slot are combined into one feedback signaling codebook for transmission. There are two types of feedback codebooks, the first type of feedback codebook type-1HARQ-ACK codebook is also called a semi-static HARQ-ACK codebook; and a second type feedback codebook type-2HARQ-ACK codebook, also called a dynamic HARQ-ACK codebook.

For the first type feedback codebook, the parameter for calculating the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel includes: first number of CBGs

Number of PDSCHs contained in one slot

Time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotThe number N of the component carriers fed back in a feedback signaling codebook_CC。

For the second type feedback codebook, the parameter for calculating the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel includes: first number of CBGs

Maximum HARQ process number N needing feedback in one feedback signaling_HARQThe number N of the component carriers fed back in a feedback signaling codebook_CC。

Determining a value of a parameter for calculating a size of a feedback signaling of a Transport Block (TB) carried in a physical downlink shared channel (PDCCH), wherein a specific implementation manner is that, for a first type codebook, a first CBG number is determined

Number of PDSCHs contained in one slot

Time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotThe number N of the component carriers fed back in a feedback signaling codebook_CCSo that O is_ACKThe first threshold is not exceeded.

Determining a value of a parameter for calculating the size of a feedback signaling of a Transport Block (TB) carried in a physical downlink shared channel (PDCCH). The specific embodiment is that for a first type codebook, a first CBG number is determined

Maximum HARQ process number N needing feedback in one feedback signaling_HARQThe number N of the component carriers fed back in a feedback signaling codebook_CCSo that O is_ACKThe first threshold is not exceeded.

The first threshold is used to represent a maximum value of the feedback signaling codebook, and may be a parameter configured by the network, or a capability number reported by the terminal, or an agreed value, for example, 360 or 359. Further, the first threshold may take different values according to the transmission mode of the feedback signaling. For example, if the feedback signaling is transmitted on PUCCH, the first threshold is 1706, and if the feedback signaling is transmitted on PUSCH, the first threshold is 360 or 359. The first threshold value when transmitting on the PUSCH is set to be smaller than the first threshold value when transmitting on the PUCCH, so that more resources can be reserved for the PUSCH. The first threshold may take different values according to the type of the codebook, and may also take the same value. The first threshold may be a number or may be more than one parameter selected according to different parameter configurations.

The specific determination mode is that a first CBG number is determined for the first type codebook according to a first threshold value

Number of PDSCHs contained in one slot

Time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotThe number N of the component carriers fed back in a feedback signaling codebook_CCSo as to follow the formula

Calculated O_ACKThe first threshold is not exceeded. Determining a first CBG number for feedback signaling of a second type codebook

Maximum HARQ process number N needing feedback in one feedback signaling_HARQThe number N of the component carriers fed back in a feedback signaling codebook_CCSo as to follow the formula

Calculated O_ACKThe first threshold is not exceeded.

Determining a value of a parameter for calculating a size of a feedback signaling of a Transport Block (TB) carried in a physical downlink shared channel (PDCCH), wherein a second specific implementation manner is that, for a first type feedback codebook, a first CBG number is determined

Number of PDSCHs contained in one slot

So that

Less than a second threshold; for the second type feedback codeDetermining the first CBG number

Maximum HARQ process number N needing feedback in one feedback signaling_HARQSo as to make

Less than the third threshold. The second threshold may be a parameter configured by the network, a capability parameter reported according to the terminal capability, or a determined value, for example, the second threshold is 16. The second threshold may take different values according to the type of codebook, and may also take the same value. The second threshold may be a number or may be more than one parameter selected according to different parameter configurations. The third threshold may be a parameter configured by the network, a capability parameter reported according to the terminal capability, or a determined value, for example, the third threshold is 56. The third threshold may take different values according to the type of the codebook, or may take the same value. The third threshold may be one number, or may be more than one parameter selected according to different parameter configurations.

S202, sending the value of the parameter for calculating the size of the feedback signaling of the transmission block carried in the physical downlink shared channel to the terminal equipment.

According to the communication method provided by the embodiment of the application, the value of the parameter for calculating the size of the feedback signaling of the transmission block loaded in the physical downlink shared channel is sent to the terminal equipment, so that the size of the feedback signaling codebook determined by the terminal equipment according to the parameter does not exceed the threshold value, the size of the feedback signaling can be reduced, and the transmission efficiency of the system is improved.

Fig. 5 is a flowchart illustrating another communication method according to an embodiment of the present application. The method may comprise the steps of:

s301, determining the size of a feedback signaling of a transmission block carried in a physical downlink shared channel.

Generally, a plurality of feedback signaling fed back in one time slot are combined into one feedback signaling codebook for transmission. There are two types of feedback codebooks, a first type of feedback codebook type-1HARQ-ACK codebook, also known as a semi-static HARQ-ACK codebook, and a second type of feedback codebook type-2HARQ-ACK codebook, also known as a dynamic HARQ-ACK codebook.

In particular, according to the first CBG number

Number of PDSCHs contained in one slot

Time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotThe number N of the component carriers fed back in a feedback signaling codebook_CCDetermining the size O of the feedback signaling of the first type codebook_ACKIn particular, the amount of the surfactant is,

according to the first CBG number

Maximum HARQ process number N needing feedback in one feedback signaling_HARQThe number of the component carriers fed back in a feedback signaling codebook is related to N_CCDetermining the size of the feedback signaling of the second type codebook

Determining the size of a feedback signaling for calculating a Transport Block (TB) carried in a physical downlink shared channel, and specifically, determining a first CBG number for the feedback signaling of a first type codebook

Number of PDSCHs contained in one slot

Time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotComposition of feedback in a feedback signaling codebookNumber N of carriers_CCSo that O is_ACKThe first threshold is not exceeded. Determining the size of a feedback signaling for calculating a Transport Block (TB) carried in a physical downlink shared channel, and specifically determining a first CBG number for the feedback signaling of a second type codebook

The first threshold is used to represent a maximum value of the feedback signaling codebook, and may be a parameter configured by the network, or a capability number reported by the terminal, or an agreed value, for example, 360 or 359. Further, the first threshold may take different values according to the transmission mode of the feedback signaling. For example, if the feedback signaling is transmitted on PUCCH, the first threshold is 1706, and if the feedback signaling is transmitted on PUSCH, the first threshold is 360 or 359. The first threshold value when transmitting on the PUSCH is set to be smaller than the first threshold value when transmitting on the PUCCH, so that more resources can be reserved for the PUSCH. A threshold value may take different values depending on the type of codebook, or may take the same value. The first threshold may be a number or may be more than one parameter selected according to different parameter configurations.

The specific determination mode is that according to a first threshold value, a first CBG number is determined for the feedback signaling of the first type codebook

Number of PDSCHs contained in one slot

Calculated O_ACKThe first threshold is not exceeded.

Determining the size of a feedback signaling of a transport block carried in a physical downlink shared channel, wherein in another embodiment, for a first type feedback codebook, a first CBG number is determined

Number of PDSCHs contained in one slot

So that

Less than a second threshold; for a second type of feedback codebook, a first CBG number is determined

Less than the third threshold. The second threshold may be a parameter configured by the network, a capability parameter reported according to the terminal capability, or a determined value, for example, the second threshold is 16. The second threshold may take different values according to the type of codebook, and may also take the same value. The second threshold may be a number or more than one threshold according to different parameter configurationsA parameter of one. The third threshold may be a parameter configured by the network, a capability parameter reported according to the terminal capability, or a determined value, for example, the third threshold is 56. The third threshold may take different values according to the type of the codebook, or may take the same value. The third threshold may be one number, or may be more than one parameter selected according to different parameter configurations.

S302, determining the feedback signaling of the transmission block loaded in the physical downlink shared channel according to the size of the feedback signaling of the transmission block loaded in the physical downlink shared channel.

Bits to feed back their ACK/NACK. According to the first CBG number

And the number C of actual code blocks CB of one TB, determining the number of actual CBGs contained in the TB

The method specifically comprises the following steps:

according to what is contained in the received TB

Less than the first CBG number, the remaining bits are filled with NACKs.

Further, if the size of the feedback signaling codebook is larger than the first threshold, all signaling of the feedback signaling codebook is NACK. At this time, the terminal device may not decode all TBs fed back in the feedback signaling codebook.

And S303, sending the feedback signaling.

Further, if the size of the feedback signaling codebook is smaller than a first threshold, the feedback signaling is sent, and if the size of the feedback signaling codebook is larger than the first threshold, the feedback signaling is not sent.

By adopting the embodiment of the invention, the first CBG number of the TB in the feedback signaling codebook is adjusted

Or the number of PDSCHs contained in one slot

Or the time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotOr the number N of component carriers fed back in a feedback signaling codebook_CCOr the maximum number of HARQ processes N requiring feedback in a feedback signaling_HARQThe size of the feedback signaling codebook is not more than the first threshold value, so that the size of the feedback signaling can be reduced, and the transmission efficiency of the system is improved. For example, if the first threshold is 360 bits, the feedback signaling does not exceed 360 bits, and compared with the original fixed 1792 bits, the overhead of the feedback signaling is greatly reduced, and the system transmission efficiency is improved, and meanwhile, the 360-bit feedback signaling does not need to be distributed to two code blocks for transmission, and the coding complexity of the device sending the feedback signaling and the decoding complexity of the device receiving the feedback signaling are reduced.

Or the number of PDSCHs contained in one slot

Or the time slot number N of PDSCH needing to feed back several time slots in one feedback signaling codebook_slotOr the number N of component carriers fed back in a feedback signaling codebook_CCOr the maximum number of HARQ processes N requiring feedback in a feedback signaling_HARQThe size of the feedback signaling codebook is not more than the first threshold value, so that the size of the feedback signaling can be reduced, and the transmission efficiency of the system is improved. For example, if the first threshold is 360 bits, the feedback signaling does not exceed 360 bits, and compared with the original fixed 1792 bits, the overhead of the feedback signaling is greatly reduced, and the system transmission efficiency is improved, and meanwhile, the 360-bit feedback signaling does not need to be distributed to two code blocks for transmission, and the coding complexity of the device sending the feedback signaling and the decoding complexity of the device receiving the feedback signaling are reduced. The method of embodiments of the present invention is set forth above in detail and the apparatus of embodiments of the present invention is provided below.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 6, the present embodiment further provides a communication apparatus 1000, which can be applied to the communication method shown in fig. 3. The communication apparatus 1000 may be the terminal device 200 shown in fig. 2, or may be a component (e.g., a chip) applied to the terminal device 200, or may be the network device 100 shown in fig. 2, or may be a component (e.g., a chip) applied to the network device 100. The communication device 1000 comprises a processing unit 11 and a transmitting unit 12. Wherein:

the processing unit 11 is configured to determine a first CBG number according to a time domain characteristic of a PDSCH (physical downlink shared channel);

the processing unit 11 is further configured to determine, according to the first CBG number, a size of a feedback signaling of a transport block TB carried in a physical downlink shared channel;

the processing unit 11 is further configured to determine a feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel;

the sending unit 12 is configured to send the feedback signaling.

In one implementation, the processing unit 11 is configured to:

determining a second CBG number according to the time domain characteristics of the PDSCH;

and determining the first CBG number according to the second CBG number.

In another implementation, the processing unit 11 is configured to: and determining a first CBG number according to the second CBG number, wherein the first CBG number is equal to the second CBG number.

In yet another implementation, the processing unit 11 is configured to: and determining a first CBG number according to the second CBG number and a third CBG number, wherein the first CBG number is the smaller value of the second CBG number and the third CBG number, and the third CBG number is a parameter of network configuration.

In yet another implementation, the processing unit 11 is configured to: and determining a first CBG number according to the type of the feedback codebook.

In yet another implementation, the processing unit 11 is configured to:

for a first type feedback codebook, the first CBG number is equal to the second CBG number, or the first CBG number is the smaller of the second CBG number and a third CBG number, where the third CBG number is a parameter of network configuration;

for a second type feedback codebook, the first number of CBGs is equal to the second number of CBGs, or the first number of CBGs is equal to the third number of CBGs.

In yet another implementation, the processing unit 11 is configured to:

determining a first time domain resource number according to the time domain characteristics of the PDSCH;

and determining a second CBG number according to the first time domain resource number.

In yet another implementation, the processing unit 11 is configured to: and determining a second CBG number according to the mapping type of the PDSCH.

In yet another implementation, the processing unit 11 is configured to:

when the mapping type of the PDSCH is type A, determining a second CBG number as the third CBG number;

and when the mapping type of the PDSCH is type B, determining that the second CBG number is a fifth CBG number.

In yet another implementation, the processing unit 11 is further configured to: and determining the number of CBGs in the TB carried in the PDSCH according to the first CBG number.

In yet another implementation, the sending unit 12 is configured to: and sending the feedback signaling in a mode of multiplexing transmission with a PUSCH.

More detailed descriptions about the processing unit 11 and the sending unit 12 can be directly obtained by referring to the related descriptions in the embodiment of the method shown in fig. 3, which are not repeated herein.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 7, the present embodiment further provides a communication apparatus 2000, which can be applied to the communication method shown in fig. 4. The communication device 2000 may be the network device 100 shown in fig. 2, or may be a component (e.g., a chip) applied to the network device 100. The communication device 2000 comprises a processing unit 21 and a transmitting unit 22. Wherein:

the processing unit 21 is configured to determine a value of a parameter used for calculating a size of a feedback signaling of a transport block carried in a physical downlink shared channel; and

the sending unit 22 is configured to send the value of the parameter for calculating the size of the feedback signaling of the transport block carried in the physical downlink shared channel to the terminal device.

In a possible implementation manner, the processing unit 21 is configured to determine a value of a parameter used for calculating a size of a feedback signaling of a transport block carried in a physical downlink shared channel, so that a feedback signaling codebook is smaller than or equal to a threshold.

More detailed descriptions about the processing unit 21 and the sending unit 22 can be directly obtained by referring to the related descriptions in the embodiment of the method shown in fig. 4, which are not repeated herein.

Based on the same concept of the communication method in the above embodiment, as shown in fig. 8, the embodiment of the present application further provides a communication device 3000, which can be applied to the communication method shown in fig. 5. The communication device 3000 may be the terminal device 200 shown in fig. 2, or may be a component (e.g., a chip) applied to the terminal device 200. The communication apparatus 3000 includes a processing unit 31 and a transmitting unit 32, and may further include a receiving unit 33. Wherein:

the processing unit 31 is configured to determine the size of a feedback signaling of a transport block TB carried in a physical downlink shared channel;

the processing unit 31 is further configured to determine a feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel; and

the sending unit 32 is configured to send the feedback signaling.

In a possible implementation manner, the receiving unit 33 is configured to receive a value of a parameter sent by a network device and used for calculating a size of a feedback signaling of a transport block carried in a physical downlink shared channel; the processing unit 31 is configured to determine, according to the value of the parameter, the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel, so that the feedback signaling codebook is smaller than or equal to a threshold.

In another possible implementation manner, the receiving unit 33 is configured to receive a value of a parameter sent by a network device and used for calculating a size of a feedback signaling of a transport block carried in a physical downlink shared channel; the processing unit 31 is configured to determine, according to the value of the parameter, the size of a feedback signaling of a transport block TB carried in a physical downlink shared channel; and the processing unit 31 is further configured to determine that the feedback signaling codebook is invalid, or that NACK is fed back in the feedback signaling codebook, or that no feedback is performed when the feedback signaling codebook exceeds a threshold.

Alternatively, the transmitting unit 32 and the receiving unit 33 may be an integral transceiver unit, or may be independent units.

More detailed descriptions about the processing unit 31, the sending unit 32, and the receiving unit 33 can be directly obtained by referring to the related descriptions in the embodiment of the method shown in fig. 5, which are not repeated herein.

The embodiment of the application also provides a communication device, and the communication device is used for executing the communication method. Some or all of the above communication methods may be implemented by hardware or software.

Alternatively, the communication device may be a chip or an integrated circuit when embodied.

Optionally, when part or all of the communication method of the foregoing embodiment is implemented by software, the communication apparatus includes: a memory for storing a program; a processor for executing the program stored in the memory, and when the program is executed, the communication device can realize the communication method provided by any one of the embodiments of fig. 3 to fig. 5.

Alternatively, the memory may be a physically separate unit or may be integrated with the processor.

Alternatively, when part or all of the communication method of the above embodiments is implemented by software, the communication apparatus may include only a processor. The memory for storing the program is located outside the communication device and the processor is connected to the memory by means of a circuit/wire for reading and executing the program stored in the memory.

The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.

The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.

The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

Fig. 9 shows a simplified schematic diagram of a terminal device. For easy understanding and illustration, in fig. 9, the terminal device is exemplified by a mobile phone. As shown in fig. 9, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 9. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a receiving unit and a transmitting unit (which may also be collectively referred to as a transceiving unit) of a terminal device, and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 9, the terminal device includes a transceiving unit 41 and a processing unit 42. The transceiving unit 41 may also be referred to as a receiver/transmitter (transmitter), receiver/transmitter circuit, etc. The processing unit 42 may also be referred to as a processor, processing board, processing module, processing device, etc.

For example, in one embodiment, the transceiving unit 41 is configured to perform S303 in the embodiment shown in fig. 5; and the processing unit 42 is configured to perform S301 and S302 in the embodiment shown in fig. 5.

Fig. 10 shows a simplified schematic diagram of a network device. The network device includes a radio frequency signal transceiving and converting part and a 52 part, and the radio frequency signal transceiving and converting part includes a transceiving unit 51 part. The radio frequency signal receiving, transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 52 part is mainly used for baseband processing, network equipment control and the like. The transceiving unit 51 may also be referred to as a receiver/transmitter (transmitter), receiver/transmitter circuitry, etc. Part 52 is generally a control center of the network device, which may be generally referred to as a processing unit, for controlling the network device to perform the steps described above with respect to the network device in fig. 4. Reference is made in particular to the description of the relevant part above.

Section 52 may include one or more boards, each of which may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of network devices. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one embodiment, section 52 is used to perform step S201 of the embodiment shown in fig. 4; and the transceiving unit 51 is configured to perform step S202 of the embodiment shown in fig. 4.

Embodiments of the present application also provide a computer-readable storage medium, in which a computer program or instructions are stored, and when the computer program or instructions are executed, the method of the above aspects is implemented.

Embodiments of the present application also provide a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method according to the above aspects.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the unit is only one logical function division, and other division may be implemented in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).

Claims

1. A method of communication, comprising:

determining a first CBG number according to the time domain characteristics of a Physical Downlink Shared Channel (PDSCH);

determining the size of a feedback signaling of a Transport Block (TB) carried in the PDSCH according to the first CBG number;

determining the feedback signaling of the transport block TB carried in the PDSCH according to the size of the feedback signaling of the transport block TB carried in the PDSCH;

and sending the feedback signaling.

2. The method of claim 1, wherein the determining a first CBG number based on time domain characteristics of the PDSCH comprises:

determining a first CBG number according to the second CBG number;

determining the first CBG number according to the second CBG number comprises the following steps:

determining a first CBG number according to the second CBG number, wherein the first CBG number is equal to the second CBG number; or

And determining a first CBG number according to the second CBG number and a third CBG number, wherein the first CBG number is the smaller value of the second CBG number and the third CBG number, and the third CBG number is a parameter of network configuration.

3. The method of claim 2, wherein determining the first CBG number based on the second CBG number comprises:

and determining a first CBG number according to the type of the feedback codebook.

4. The method of claim 3, wherein the determining the first number of CBGs based on the feedback codebook type comprises:

5. The method of claim 2, wherein the determining a second CBG number according to the time domain characteristics of the PDSCH comprises:

6. The method of claim 2, wherein the determining a second CBG number based on the time domain characteristics of the PDSCH comprises:

and determining a second CBG number according to the mapping type of the PDSCH.

7. The method of claim 6, wherein the determining a second CBG number according to the mapping type of the PDSCH comprises:

8. The method of any one of claims 1 to 7, further comprising:

and determining the number of CBGs in the TB carried in the PDSCH according to the first CBG number.

9. The method of any of claims 1 to 7, wherein the sending the feedback signaling comprises:

and sending the feedback signaling in a mode of multiplexing transmission with a PUSCH.

10. A communications apparatus, comprising:

the processing unit is used for determining a first CBG number according to the time domain characteristics of a Physical Downlink Shared Channel (PDSCH);

the processing unit is further configured to determine, according to the first CBG number, a size of a feedback signaling of a transport block TB carried in a physical downlink shared channel;

the processing unit is further configured to determine a feedback signaling of the transport block TB carried in the physical downlink shared channel according to the size of the feedback signaling of the transport block TB carried in the physical downlink shared channel;

a sending unit, configured to send the feedback signaling.

11. The apparatus as recited in claim 10, said processing unit to:

determining a first CBG number according to the second CBG number;

the processing unit is configured to:

12. The apparatus as recited in claim 11, said processing unit to:

13. The apparatus as recited in claim 12, said processing unit to:

14. The apparatus of claim 11, wherein the processing unit is configured to:

15. The apparatus as recited in claim 11, said processing unit to:

and determining a second CBG number according to the mapping type of the PDSCH.

16. The apparatus of claim 15, wherein the processing unit is configured to:

17. The apparatus according to any one of claims 10 to 16, wherein the processing unit is further configured to:

18. The apparatus according to any of claims 10 to 16, wherein the sending unit is configured to:

19. A communication apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 9 when executing the computer program.

20. A communication device comprising a processor configured to couple to a memory, read instructions from the memory, and implement the method of any one of claims 1 to 9 in accordance with the instructions.

21. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 9.